home · Other · Surgical instruments. Classification of surgical instruments. General purpose instruments in surgery. General surgical instruments, rules for using groups of medical instruments and their composition

Surgical instruments. Classification of surgical instruments. General purpose instruments in surgery. General surgical instruments, rules for using groups of medical instruments and their composition

5.1. GENERAL AND SPECIAL SURGICAL

TOOLS

There are currently enough a large number of classifications medical instruments and options for dividing it into groups. By purpose, surgical and dental instruments can be distinguished.

Surgical instruments are divided into two groups.

General surgical instruments- these are the instruments most often used in the clinic and used for basic manipulations. Quite often these tools are multifunctional.

Special tools- these are instruments that are used only in certain areas of surgery. Quite often, the tools of this group are used only when performing a specific stage of any one operation.

General surgical instruments, in turn, can be divided into 4 subgroups depending on their specific purpose:

tools for separating tissues: scalpels, knives, scissors, osteotomes, chisels, wire cutters, etc.;

tools to stop bleeding: Cooper and Deschamps ligature needles, hemostatic clamps, clips and clamps for their application;

tools for joining fabrics: needle holders, surgical needles, tweezers for applying Michel brackets, staplers, instruments for bone sutures, etc.;

auxiliary tools:

To create an exhibition: retractors, hooks, mirrors, etc.;

For holding and displacing organs: tweezers, lifters, probes, etc.

According to the number of component parts, instruments can be divided into single-piece (usually solid forged or stamped) - scalpels, chisels, chisels, hooks, as well as prefabricated ones, which, in turn, can be hingeless (tweezers, trocars) and hinged (clamps, needle holders, forceps). The last group is classified by the number of joints: single-jointed (clamps, scissors, most forceps) and multi-jointed (double-gear pliers, gastric sponges).

In addition, according to technical specifications(GOST 19126-79), surgical instruments are divided into:

Tools with sharp sharpening (sharp, cutting, piercing);

Tools with spring properties (cracks, hingeless);

Plate tools (hooks);

Wire instruments (probes, some types of hooks, conductors);

Tubular instruments.

This division can be transferred to special tools.

Dental instruments, among other things, are divided into:

General purpose instruments (dental burs, dental mirror, tweezers, scissors, probes);

Therapeutic instruments (for fillings, treatment of periodontal diseases, etc. - smoothers, curettes, needle files, hooks);

Surgical instruments (for tooth extraction, treatment of periostitis, etc. - forceps, curettage spoons, elevators);

Instrumentation for endodontics.

All dental and general surgical instruments are combined into special sets according to the final purpose, for example, a set for tooth extraction (a separately similar, smaller set for tooth extraction in children), an examination set, a set for endodontics, a set for filling, etc. The composition of the kits varies somewhat depending on the medical institution, supplier, manufacturer, etc. Sometimes the formation of a set is also influenced by the habit of the dentist himself. In this regard, it is advisable to highlight basic part of the set and additional.

It is quite natural that for a student it should be of particular interest basic kit tools.

Mandatory set of general surgical and special tools reflected in the “Appendix? 9" to the order of the Ministry of Health and Social Development of the Russian Federation dated April 14, 2006? 289 “On measures for further improvement dental care children in the Russian Federation."

5.2. TYPES OF SURGICAL INSTRUMENTS

5.2.1. Tools for separating tissue

Scalpel- a small one-piece tool with a short blade and a long handle (Fig. 5.1). Designed for cutting soft tissues (skin, subcutaneous tissue, aponeuroses, muscles, etc.). There are several types of scalpels: pointed, abdominal, ophthalmic. The latter differs only in its smaller size and, as a rule, is made of the pointed type. The use of a scalpel depends on the shape of its blade: an abdominal scalpel is used to cut the skin, a pointed scalpel is used for more subtle manipulations, when, in addition to the incision, it is also necessary to make a puncture. An eye scalpel is used to make small cuts. There are modifications of the scalpel with replaceable blades. Currently, disposable scalpels are becoming increasingly common. For particularly thin cuts on the face

12 3

Rice. 5.1.Scalpels: 1 - abdominal scalpel; 2 - pointed scalpel; 3 - ophthalmic scalpel; 4 - disposable scalpel; 5 - blade holder

Rice. 5.2. Scissors:

1 - blunt scissors; 2 - pointed scissors; 3 - Richter scissors; 4 - scissors, curved along a plane (Cooper); 5 - eye scissors; 6 - vascular scissors

(for example, when plastic surgery) also use a microsurgical instrument - a blade holder. The cutting part of this tool is represented by a fragment of a razor blade, which allows, firstly, to make thinner and more accurate cuts, and secondly, to quickly replace the blade if necessary.

Scissorsare a prefabricated tool. They consist of a working part (blades) and handles connected with a screw or rivet (Fig. 5.2). The edges of the blades, closing, ensure cutting of tissue. Scissors can be straight, curved or angled. In addition, there are blunt and pointed scissors. Small scissors, both straight and curved, are called eye scissors. The use of scissors depends on their shape, since scissors, in addition to cutting, also produce unwanted crushing of tissue. They are used where for some reason it is impossible to use a scalpel (for example, when cutting loose tissues or when it is necessary to make an incision to a certain depth without affecting the underlying layers). It is typical to use straight and curved scissors to form a patch from a filmy plastic material (fascia, greater omentum, synthetic film).

Angled scissors (Richter scissors) are usually used to cut the peritoneum and pleura during laparotomy and thoracotomy, as well as to cut the hernial sac. There are also modifications of scissors for cutting gauze (with a thickened cutting part), plaster (with a beak at one end) bandages, as well as for longitudinal dissection of blood vessels. Microsurgical scissors are gradually becoming widely used.

ChiselsAnd chisels are solid forged or stamped one-piece tools (Fig. 5.3). They consist of a pointed working part (straight or curved) and a handle. The chisel is characterized by a straight handle of a simple shape with a flattening at the end (the “heel” or striking part). The chisel has a massive, hollow inside handle without flattening. These instruments are intended for processing bone: with a chisel you can scrape off excess bone tissue (during osteosynthesis or plastic surgery), and with the help of a chisel and a hammer, the surgeon dissects or incises the bone. The largest and strongest chisels are also called osteotomes.

Bone spoons- one-piece instruments with a working part made in the form of a small spoon with pointed edges (see Fig. 5.3). Used to remove bone remnants during treatment

Rice. 5.3.Instruments for bone operations

Chisels and chisels: 1 - grooved chisel; 2 - straight chisel; 3 - Vojaček’s chisel, grooved; 4 - osteotome. Bone spoons: 5 - Volkmann spoon; 6 - Bruns spoon; 7 - dental excavator. Raspators: 8 - Farabeuf straight raspator; 9 - Farabeuf curved raspator

comminuted fractures or osteomyelitis. In addition to bone trays, dental excavators are used in dentistry, which are designed to remove temporary fillings, remove sequesters, clean the tooth cavity, etc.

Raspatorydesigned to remove periosteum from bones (see Fig. 5.3). They consist of a working part - a cutting edge with a support platform and a durable handle. The shape can be straight or curved.

Bone forcepsused for biting bone fragments - when treating wounds of the brain and facial parts of the head (Fig. 5.4). Luer forceps are distinguished by a rounded working part with a cavity inside into which the bitten bone fragment is placed. Liston's pliers are made like side cutters and provide a relatively thin and straight cutting line. To increase the cutting torque, a double gear is installed in the pliers. Dahlgren pliers are distinguished by the fact that their cutting part is made in the form of a hook and can be replaced if broken or worn out. These forceps are used for trephination of the bones of the cranial vault.

Rice. 5.4. Bone forceps:

1 - Liston pliers; 2 - curved Luer pliers; 3 - appearance of the double transmission of pliers; 4 - Dahlgren cutters

Tooth extraction forceps: each tooth corresponds to very specific forceps, differing in numbers (Fig. 5.5).

Elevatorsdental - designed to remove remnants of tooth roots.

5.2.2. Tools to stop bleeding

To stop bleeding, various types of hemostatic clamps are mainly used (Fig. 5.6).

Hemostatic clamp consists of a handle with a ratchet and a working part. In this case, the shape and dimensions of the working part may be different. According to the shape of the working part, straight clamps are distinguished

Rice. 5.5.Tooth extraction forceps (from: Bezak V.I., 1969): 1 - straight? 2 - for removing incisors, canines and premolars; 2 - S-shaped M7 - for removing premolars; 3 - beak-shaped with converging cheeks? 13 - for removing roots; 4 - S-shaped? 17 - for removing right molars; 5- S-shaped? 18 - for removing left molars; 6 - beak-shaped (crown)? 22 - for removing molars on both sides; 7 - beak-shaped with rounded, non-converging cheeks? 33 - for removing teeth and roots; 8 - bayonet-shaped? 67 - for removing wisdom teeth; 9 - beak-shaped horizontal? 79 - for removing wisdom teeth with difficulty opening the mouth; 10 - bayonet-shaped (bayonet) with narrow cheeks? 51a - for removing roots and teeth with a damaged crown; 11 - bayonet-shaped (bayonet) with medium cheeks? 51 - for removing roots and teeth with a damaged crown; 12 - bayonet-shaped (bayonet) with wide cheeks? 52 - for removing roots and teeth with a damaged crown

Rice. 5.6.Tools to stop bleeding. Hemostatic clamps: 1 - straight Billroth clamp; 2 - straight Kocher clamp; 3 - “mosquito” type clamp; 4 - Hoepfner vascular clamp. Ligature needles: 5 - Deshana ligature needle; 6 - Cooper ligature needle

and curved. More convenient are curved clamps, which are applied to the stump of the isolated and transected vessel and do not impair the view of the wound. A Hoepfner vascular clamp can be used to suturing a damaged carotid artery using the end-to-end method.

Ligature needlesused for ligating the vessel along its length (see Fig. 5.6). In maxillofacial surgery they are used for ligation of the carotid arteries and their branches. The tip of the needle can be sharp or blunt. In this case, the Cooper needle is used to ligate a deep-lying vessel, and the Deschamps needle is used for a superficial vessel.

5.2.3. Tools for joining fabrics

Needle holdersThe shape closely resembles hemostatic clamps, but differs in a thicker and shorter working part. Designed to hold surgical needles

Rice. 5.7. Needle holders:

1 - Hegar needle holder; 2 - Troyanov needle holder; 3 - Mathieu needle holder; 4 - microsurgical needle holder

Rice. 5.8.Surgical needles:

a - surgical needles of different sizes. b - cross-section of piercing needles; c - cross-section of cutting needles; d - atraumatic needle with thread

in the process of suturing soft tissues. To work with thin suture material and small needles, microsurgical needle holders are used (Fig. 5.7).

Surgical needles designed for suturing fabrics (Fig. 5.8). According to their shape, needles are divided into straight and curved. According to the cross section, there are piercing (round cross-section) and cutting (triangular, rectangular, trapezoidal). By size, needles are divided into 12 groups by length (numbers from 1 to 12, the larger the number, the smaller the needle) and 3 groups by thickness (thick, thin, eye). In addition, a separate group consists of atraumatic needles, in the back of which sterile suture material is attached.

5.2.4. Auxiliary Tools

Hookscan be one-sided or two-sided (Fig. 5.9). Single-sided hooks consist of a handle and a working part. An example of these are the three-prong and four-prong Volkmann surgical hooks. The double-sided hook (Farabefa) is more versatile, as it has two working parts of different sizes. In addition, it causes less trauma to the retained tissues. The Farabeuf hook can be made in two versions - C-shaped and S-shaped. The saddle hook is used to hold the isthmus of the thyroid gland during operations on it and the trachea. The Limberg hook is used in the treatment of zygomatic arch fractures.

Gag (Fig. 5.10) is intended for forced opening of the mouth in emergency conditions, some

12 3

Rice. 5.9. Hooks:

1 - four-prong Volkmann hook;

2 - Farabefa plate hook;

3 - small saddle hook

Rice. 5.10.Mouth dilators and retractors:

1 - screw mouth opener; 2 - ratchet mouth retractor; 3 - screw retractor; 4 - tongue holder

modifications are used in a number of clinics for any interventions in the oral cavity.

Retractors (see Fig. 5.10) are used to expand the edges of the surgical wound. In maxillofacial surgery, small wound retractors with a screw traction, for example, the Edson retractor, are widely used.

Language supporter(see Fig. 5.10) is used to capture the tongue and displace it during oral surgery.

Tweezers- two-piece tools with springy working parts (Fig. 5.11). Designed to capture and hold tissues, organs, and dressings. Anatomical tweezers have a more gentle, but at the same time less strong grip - they hold

Rice. 5.11.Tweezers and forceps:

1 - anatomical tweezers; 2 - surgical tweezers; 3 - dental tweezers; 4 - eye tweezers; 5 - forceps

easily injured anatomical formations. Surgical tweezers have teeth on the working surface that injure tissue, but grip them very tightly. Dental tweezers are curved, they are convenient for working during the treatment of dental diseases - they are used to insert turundas into the carious cavity. Eye tweezers are smaller in size and can be used for minor manipulations.

Forcepsvary in size (large, medium, small) (see Fig. 5.11). The shape can be straight or curved. By appearance resemble hemostatic clamps, but have a stronger working part with a thickening at the end. They are designed to grip sterile linen, suture material, instruments from sterilizers. Quite often, curved forceps are used for primary surgical treatment wounds for their mechanical cleaning.

Rice. 5.12. Spatulas and probes:

1 - neurosurgical spatula; 2 - therapeutic spatula; 3 - dental spatula; 4 - button-shaped probe; 5 - grooved probe; 6 - Kocher goiter probe; 7 - bayonet-shaped dental probe; 8 - dental excavator

Spatulas- instruments with a flattened and blunted working part (Fig. 5.12). Neurosurgical spatulas are used to push back brain tissue during neurosurgical procedures. A therapeutic spatula is needed to move it towards the tongue when examining the oral cavity and the condition of the tonsils. Dental spatulas are mainly used for mixing filling paste.

Probes(see Fig. 5.12). The main purpose of the button probe is the revision of fistula tracts. A grooved probe is used when cutting the fascia or aponeurosis to protect the underlying tissue from damage. The Kocher probe is used similarly to ligature needles during operations on the thyroid gland. Dental

probes are used for dental inspection - identifying softening of dentin, depth of carious cavity, etc. Dental excavators can be used to remove food debris, replace fillings, and scrape out granulations.

5.3. SPECIALIZED KITS

TOOLS

General surgical kit used in primary surgical treatment of wounds of the head and face, treatment of purulent diseases, etc. This set is also a component of most specialized sets for plastic surgery, vascular surgery, oncology surgery, etc. The set consists of scalpels, hemostatic forceps, tweezers, probes, hooks (or retractors), scissors, needles and needle holders, forceps.

Rice. 5.13.Tracheostomy kit:

1 - three-ostomy Luer cannula; 2 - Trousseau tracheostomy retractor; 3 - sharp single-tooth hook for holding the trachea; 4 - saddle hook

Rice. 5.14.Basic set for dental examination: 1 - dental mirror; 2 - dental probe (angular); 3 - dental tweezers; 4 - dental spatula; 5 - dental excavator

Tracheostomy kit (Fig. 5.13) consists of a Trousseau tracheostomy retractor, a tracheostomy cannula, a sharp hook for holding the trachea and a saddle hook for the isthmus of the thyroid gland. This set cannot be used without in general surgical instruments.

The basic dental examination kit (Fig. 5.14) includes:

- dental mirror- consists of a handle and the mirror itself - a curved mirror plate with a focal length of 75 mm. There are non-separable and collapsible modifications, and collapsible mirrors are more convenient - the handle of some of them is made of plastic and fits better in the palm. Intended

mirrors for examining hard-to-reach areas of the oral cavity and posterior internal surfaces of teeth;

- dental probe- available various options executions - curved, sickle-shaped, bayonet-shaped. The probe is designed to detect and inspect carious cavities;

- dental tweezers- intended for inserting turundas and tampons into a wound or carious cavity;

- dental spatula- can be bilateral or unilateral. Used for mixing the filling mass and grinding it. Collapsible spatulas with replaceable tips are very convenient. Some manufacturers complete such kits with disposable tips and reusable handles, which fit more comfortably in the palm of your hand;

- dental excavators- spoons vary in diameter (from 0.7 to 2.4 mm, numbers from 1 to 4, respectively), designed for extracting fragments of hard dental tissues, food debris from a carious cavity, removing temporary fillings and dental plaque, scraping granulations;

- smoothers, pluggers-smoothers- differ in the size of the working parts, designed to smooth out the filling mass when closing a carious cavity.

In addition, the basic set includes a kidney-shaped tray into which instruments and dressings are placed. However, a number of manufacturing companies complete basic sets own modified trays or cassettes for holding tools. Such cassettes greatly facilitate the work of the dentist.

Set of tools for filling (Fig. 5.15):

- sleeves for drill- serve to transmit torque from a stationary drill motor to the working part. If a pneumatic rather than a mechanical propulsion device is used, flexible twisted air ducts are used instead of hoses;

- handpieces for sleeve drills- produced straight and angular, used to secure rotating tools (burs, cutters, etc.);

- dental burs- used for mechanical processing of hard tissues (tooth, frozen filling mass), they differ in shape and purpose: burs - for primary processing, finishers - for final processing, polishers - for polishing (Fig. 5.16);

- matrix for contour fillings used to temporarily strengthen a filling if one of the walls of the tooth is missing.

A set of tools for working with a root canal (Fig. 5.17):

- root drills(manual and machine) - designed for expanding and leveling root canals, differ in diameter (from 0.25 to 0.45 mm, numbers respectively from 1 to 5);

- drillbors manual and machine - used for probing, expanding and filling the root canal;

Rice. 5.15.Tools for filling:

1 - sleeve for a drill; 2 - straight and angled handpieces for the drill; 3 - matrix for contour fillings

Rice. 5.16.Dental burs (from: Bezak V.I., 1969). For treating deep carious cavities: 1 - fissure cylindrical with double cutting; 2 - fissure cylindrical with single thread; 3 - fissure conical with double cutting; 4 - fissure conical with double cutting. For processing, spiky-shaped; 6 - wheel-shaped back conical. For treating shallow carious cavities: 7 - ball (spherical) bur. To prepare the filling for polishing: 8 - spherical finish. For polishing a filling: 9 - ball-shaped polisher

Rice. 5.17.Tools for working with the root canal: 1 - manual root drill; 2 - machine root drill; 3 - manual drill; 4 - machine drilling; 5 - root needle; 6 - channel filler; 7 - pulp extractor

- root needlesMiller - differ in diameter (0.17, 0.19, 0.21 mm, numbers 1, 2, 3, respectively), intended for the introduction of medicinal substances into the root canal and its subsequent filling;

- channel fillers - designed for filling the root canal with a filling mass;

- pulp extractors- can be made with a long or short handle. Used to remove remaining pulp from the root canal.

5.4. POSITION OF INSTRUMENTS ON THE INSTRUMENTAL TABLE OF THE OPERATING NURSE

When performing general surgical operations You should adhere to certain rules for the location of tools and soft equipment.

The operating nurse covers the mobile small instrument table with a sheet folded in half so that one half of the sheet covers the table, and the other hangs down and then

Rice. 5.18.Methods of stacking instruments on a small instrument table: A - left-handed; B - right-handed

could close the collected tools. The operating nurse uses a forceps to transfer the necessary instruments from a large instrument table to a small one and arranges them in a certain order. Depending on the position of the table - to the right of the operating table (next to the surgeon) or to the left of the table (next to the first assistant) - the instruments are placed in two ways.

The layout of the surgical team and the instrument table for various operations is shown in Fig. 5.18.

When the nurse's table is positioned to the right of the patient, the arrangement of instruments and material is shown in Fig. 5.18, B. On the right edge of the table (from the operating nurse’s side) there are napkins in three packs: large napkins at the back, then medium and small ones. Along the front edge (closer to the surgeon) are placed the instruments that are constantly needed during surgery: hemostatic clamps, Mikulicz clamps, tweezers, scissors, hooks. The surgeon and his assistants take the instruments from the front edge of the table, and the nurse only maintains order on the table and restores the correct placement of the instruments.

The rear edge of the table is at the full disposal of the operating nurse, and the surgeon does not touch it. Spare tools are located here, ready for use; The suture material and the operating nurse's scissors are also located here.

The operating nurse has no right to touch instruments that have been used in surgery and are stained with blood. As a last resort, she removes them with a forceps. When the nurse's table is positioned to the left of the patient, the arrangement of instruments and material is shown in Fig. 5.18, A.

5.5. SURGICAL STAPLE EQUIPMENT

The idea of ​​using metal staples when performing gastric resection was first expressed in 1903 by the Hungarian surgeon Hültl. The first device for such manipulations was proposed in 1921 by surgeon Petz. However, due to significant shortcomings, it was not widely used. A real breakthrough was made in 1949, when in the USSR a device for applying a circular vascular suture was developed and introduced into clinical practice. In the 50-70s of the twentieth century in our country, they were developed in different years production of more than 40 types of various stapling devices for connecting or suturing various organs was carried out

and fabrics (Fig. 5.19). Apparatuses for applying a circular vascular suture (ASTs-4, ASC-8, ASC-20), a universal device for suturing blood vessels (US-18), a device for linear vascular suture (ALSh-20), and a device for suturing have become quite widely used. heart auricle (UUS-20), devices for suturing the bronchial stump (UKB-25, UKB-16) and the root of the lung (UKL-40 and UKL-60), lung tissue (UTL-105), for suturing the bronchi (SB-2 and SB-3), device for applying esophageal-gastric anastomosis (EGC), device for applying gastrointestinal anastomosis (NZhKA-60), devices

Rice. 5.19.Stitching machines: 1 - ASC; 2 - UKL; 3 - UO

for suturing the sternum, ribs, clavicle and lower jaw (SGR-20, SRKCH-22). Multi-purpose devices are the device for suturing soft tissues (SMT-2), devices for suturing organs (UO-40, UO-60). IN last years Disposable staplers have become widespread.

The design principle of all these devices is the same. Each such device consists of: a device for fixing sutured organs and tissues; store with brackets; devices for pushing out staples; matrices for bending brackets.

The essence of the operation of the stitching machine is as follows. After fixing the tissues to be stitched, the mechanism for pushing out the U-shaped staples is activated, which, having passed through the edges of the tissues, rest against the matrix and take on a V-shape. Depending on the need, a mechanical suture can be single or double-row, linear or circular, with longitudinal or transverse arrangement of staples, applied simultaneously with all staples or sequentially.

Stapling devices allow you to perform three typical surgical techniques: joining tissues or parts of organs, forming anastomoses of hollow organs, and forming organ stumps.

Stapling devices significantly reduce the dependence of the quality of sutures on the individual professional characteristics of surgeons, simplify the surgical technique, speed up the operation, and increase the reliability of the sutures.

However, there are contraindications to the use of stitching devices, primarily the presence of pathological changes in the tissues being stitched (inflammatory or sclerotic processes).

5.6. DENTAL EQUIPMENT

Dental equipment is a set of devices necessary for the functioning of dental office. The main devices are a dental chair, a drill, a dental light, and a compressor. Equipment also includes diagnostic and display systems.

A dental chair is necessary to accommodate the patient. In some cases, it can be replaced by a regular chair (for example, during on-site preventive examinations).

A drill is necessary to create torque for working with burs, drills, and sections. In this case, the torque itself is transmitted using a flexible hose, or drive. At the end of the drive there is a handpiece for the drill. It can be straight or angular depending on the damage to the tooth, its location, etc. The tip is used to secure the instrument itself (see burs, drills).

A dental light is needed to illuminate the oral cavity. It consists of a support (stand), lamp and reflector. There are shadowless modifications of illuminators that have several lamps located around a circle. The main requirement for illuminators is a clear limitation of the light field, since otherwise the light may shine into the patient’s eyes.

The compressor is used to dry the mouth, suction saliva, etc. It can be used to create torque (using special air hoses and air tips), and then it can act as a drill.

Diagnostic systems are designed, on the one hand, to determine the volume and type of treatment, and on the other, to objectively assess the results of treatment by both the doctor and the patient (imaging systems). These systems include devices for x-ray diagnostics, negatoscopes, and dental video systems.

X-ray diagnostic devices are X-ray machines(classical or film), computed tomographs, NMR tomographs. Currently, the use of radiovisographs is becoming increasingly relevant, in which X-ray radiation is recorded not by film, but by a digital sensor connected to a computer, which performs the final processing and presentation of the image. There are panoramic and sighting radiovisographs. The use of computer technology in the work of a dentist can greatly facilitate the archiving of patient data by creating databases. As a result, previous images can be requested at any time for comparison with subsequent ones.

X-ray films are designed to facilitate the evaluation of radiographs. In some cases, they are integrated into the medical unit of the dental unit.

Dental video systems are an intraoral camera connected to a computer. The main requirements

requirements for such cameras are miniaturization and hygiene.

Currently dental equipment fully or partially integrated into dental units.

A dental unit is a complex of electrical, mechanical and hydraulic elements that converts external energy into the energy of dental instruments and is designed to provide the necessary conditions for dental treatment. Note that, in accordance with the definition, the complex of the above

devices, even if not connected to each other, can be considered a dental unit. However, here and further we will describe industrially manufactured dental units, made in the form of a single complex, all elements of which are interconnected (Fig. 5.20).

Classification of dental units

By mobility: portable stand-alone, portable connected, mobile, stationary.

According to completeness: complete, incomplete (one or more elements are missing).

By the number of tools: for 1, 2, 3, 4 tools and modular with the ability to connect tools one at a time.

By type of illumination on the sleeves: without illumination, with one light guide, with illumination on several sleeves.

By type of micromotor: air, electric without backlight, electric with backlight.

According to the system for evacuating fluid from the oral cavity: with a saliva ejector, with a saliva ejector and an injection vacuum cleaner, with a saliva ejector and a vacuum vacuum cleaner.

Rice. 5.20.External view of the dental unit (Smile unit)

The basic package of the dental unit includes:

Patient chair - can be hydraulically or electrically driven, in modern installations allows, if necessary, to place the patient lying down or in the emergency position - the Trendelenburg position (with the head end down). The upholstery of the chair should be wear-resistant and easy to clean.

  • SURGICAL INSTRUMENTATION- a set of instruments, devices, devices designed to perform a surgical operation. With the help of surgical instruments, the surgeon performs various manipulations related to the separation of tissues, removal of affected areas, creating convenient access to the organ being operated on, etc. Improving surgical techniques and introducing new methods entails the creation of new types of surgical instruments, which allows surgeons to perform operations which were previously considered impossible.

    The history of the emergence and improvement of surgical instruments is directly related to the history of the development of medicine (see). It is believed that craniotomy was performed using primitive stone tools in the Neolithic era. Surgical instruments were found during excavations in Greece, Italy, Egypt, and India. However, the bulk of instruments that resemble modern ones in form and purpose were created in the 16th-18th centuries.

    In Rus', surgical instruments were made by artisans (gunsmiths, foundry workers, blacksmiths, etc.). In 1721, by decree of Peter I, the first workshop for the production of surgical instruments “Instrumental Hut” was organized in St. Petersburg on Aptekarsky Island (now the Order of Lenin and the Order of the October Revolution Leningrad Production Association"Red Guard") In 1738, a catalog was compiled that included all the surgical instruments produced in Russia at that time. Most surgical instruments were artistically inlaid and trimmed with silver and bone.

    In 1829, I.V. Buyalsky became the manager of the St. Petersburg Tool Factory. He collected a collection of samples of instruments, according to which the plant produced surgical instruments in large quantities. I.V. Buyalsky proposed a number of instruments of his own design: a spatula for pushing out the insides, a tourniquet for stopping bleeding, a blood transfusion apparatus of an original design, etc. Under his leadership, the plant produced over 25 special surgical kits. Since 1841, N.I. Pirogov was the technical director of this plant. At that time, new surgical instruments and sets were designed at the plant (12 of them were used by Russian surgeons for 50 years). In 1883, a complete catalog of the surgical instruments of the St. Petersburg Instrument Plant was compiled with an accurate description and indication of the cost of both the instruments themselves and their repairs.

    With the introduction of asepsis (see), a new period of development of surgical instruments began. Instruments of complex geometric shapes, with inlays and decorations made of bone, mother-of-pearl, and gold were replaced by instruments of simpler shape and design with a smooth and even surface. They were made from a homogeneous material that was chemically resistant and could withstand repeated boiling. Surgical instruments that meet these requirements were manufactured in Russia by the Moscow Schwabe enterprise. The company's catalog, published in 1877, contains descriptions and images of 3,174 different surgical instruments.

    A great contribution to the creation of surgical instruments was made by Russian surgeons S. I. Spasokukotsky, who designed a special set for gastrointestinal surgery, Yu. K. Shimanovsky, who invented over 20 instruments (among them a resection saw, a suture needle, knives various shapes etc.), S.P. Fedorov, who designed instruments used in kidney operations, L.G. Bellarminov, who designed ophthalmic instruments, D.O. Ott - gynecological instruments, etc. Many widespread surgical instruments were proposed by foreign surgeons : various hemostatic clamps - T. Billroth, T. Kocher, J. Pean, intestinal sphincter and costal dilator - I. Mikulic and others.

    During the years of Soviet power, small semi-handicraft enterprises for the production of surgical instruments turned into large enterprises in the medical industry, which produce all the surgical instruments necessary to equip medical institutions (see Healthcare, Medical industry). The All-Union Research and Testing Institute is developing new surgical instruments and improving their production technology. medical equipment in Moscow and the All-Union Research and Design Institute of Medical Instruments in Kazan, as well as design bureaus at a number of factories. Newly developed surgical instruments undergo several types of testing: technical, experimental (on animals) and clinical in leading medical institutions countries (see Standardization). Positive test results are the basis for recommending them for clinical practice and industrial production.

    Surgical instruments are produced only according to the technical specifications approved by the USSR M3 and the USSR Ministry of Medical Industry, which are the main document determining the quality of the product and its compliance functional purpose. Lists and characteristics of surgical instruments produced in the USSR are contained in catalogs published by M3 of the USSR and the Ministry of Medical Industry of the USSR, and those produced abroad are contained in catalogs of manufacturing and trading companies. The supply of surgical instruments to healthcare institutions is carried out by the All-Union Association "Soyuzmed-Tekhnika" under the Ministry of Health of the USSR, the Association "Medtechnika" (republican, regional, regional) through pharmacies and stores (see Soyuzmedtekhnika), export abroad - the All-Union Association "Medexport".

    The development of surgical instruments is carried out in various ways. 1. Invention of original instruments based on a new principle. For example, a needle-free injector (see Needle-free injector); stitching devices (see) were replaced by gastrorafiote, which was previously used to compress the walls of the stomach, stitching them with a needle and cutting off the part to be removed during gastroenterostomy according to Telkov; a new technique and new instruments for stone crushing (see Urological instruments) - lithotome knives, previously used for perineal stone dissection and removal of stones from the bladder, etc. 2. Improvement of already known designs, for example, shapes and sizes of hemostatic clamps and tweezers, transition to a box lock, the use of polymer materials for the manufacture of tools, for example, for bougies (see), titanium alloys and other materials. 3. Renewal of old structures on a new basis. For example, Egorov-Freidlin nippers for biting out sections of bone during neurosurgical and general surgical operations are a modification of Egorov nippers for operations on the spine, blunt ligature needles (left and right) for placing a ligature under the vessels in pediatric surgery are a modification of Deschamps needles (see Medical needles) , hemostatic clamps - a modification of Doyen's angiotribe (see Angiotripsy), etc. New types of needle holders have eliminated the use of Hagedorn needle holders and others.

    Initially, surgical instruments were made of iron, then carbon steel, copper, brass, silver and other materials. Currently, pure metals are not used for the production of surgical instruments, but alloys are used. The vast majority of surgical instruments are made from chromium stainless steel grades 20X13, 30X13, 40X13 (the first number of the steel grade is the average carbon content in hundredths of a percent, the letter X is chromium, the number 13 is its average content in percent). To increase corrosion resistance, products made from these steel grades must be hardened and have a perfectly smooth surface (for example, polished). Tool steel grades U7A - U12A (the letter U is carbon, the number is its content from 0.7 to 1.2%, the letter A indicates high quality steel) is mainly used for manufacturing cutting tools. Products made from these steels after hardening acquire high hardness and good cutting properties, but they are subject to severe corrosion. To protect against corrosion, tools made from this steel are plated with a layer of nickel or chromium. High-alloy steels, which do not require high-temperature hardening to obtain the required hardness, are used for the manufacture of instruments with miniature working parts (ocular instruments, instruments for microsurgery). An alloy of copper with zinc - brass grade L62, containing about 62% copper, is used for the manufacture of catheters, probes, disinfection boilers, and an alloy of grade LS 59-1, containing on average 59% copper, 1% lead and 40% zinc, is used for manufacturing fittings for syringes, cannulas, needles and trocars. An alloy of copper with nickel and zinc - nickel silver has high corrosion resistance. Tracheotomy tubes, cannulas, etc. are made from it.

    Surgical instruments generally have a shiny, polished surface, which improves their anti-corrosion properties and gives them beautiful view. However, the shiny surface of the instruments contributes to the creation of glare in the operating field, which, reflecting the light of the lamps, interferes with the surgeon’s work. Therefore in Lately began to produce instruments with a matte surface.

    Titanium alloys began to be used for the production of surgical instruments. Tools made from this material are characterized by low mass (weight) and high corrosion resistance. They are about 5 times more durable than tools made from chromium stainless steel. The surface of titanium instruments does not need corrosion protection; it is often given different colors (golden, light blue, indigo, green, crimson), which allows for color marking of groups of tools and makes them easier to use. This is especially important for microsurgical instruments with miniature working parts (see Microsurgery). The handles of miniature hooks, for example, have Blue colour, raspators - green, knives - golden. For the manufacture of surgical instruments, noble metals are also used - silver, platinum, and as suture material - tantalum or an alloy of cobalt, chromium, nickel, molybdenum with the addition of other elements.

    Non-metallic materials (plastics, rubber) are used for the manufacture of catheters, bougies, tracheotomy tubes, and syringes. The production of surgical instruments made of plastic for disposable use (tweezers, syringes, spatulas, scalpels with steel blades, injection needles), which are produced in sterile packaging, is becoming widespread.

    Surgical instruments include products of various designs, ranging from instruments consisting of one part (scalpel, spatula) to mechanized instruments with manual, electric and pneumatic drive. The total number of types of surgical instruments reaches several thousand items. Traditionally, surgical instruments are classified according to the principle of use and are divided into instruments for anatomical research - for example, an anatomical hammer with a hook, a brain knife (see Anatomical instruments, Sectional instruments); diagnostic tools - for example, a neurological hammer, a set of tools for studying tendon reflexes; instruments for surgical interventions intended for general surgery (the so-called general surgical instruments), neurosurgical, ophthalmological, otorhinolaryngological and other operations; auxiliary tools, accessories and accessories - screwdrivers, wrenches, pens, measuring tools, etc.

    There is a classification of surgical instruments according to their main functional purpose. According to this classification, it is divided into a number of groups. 1. Pricking instruments for punctures, injections, stitching tissue, etc., injection needles, for drawing and transfusion of blood, for suctioning plasma, surgical (see Medical needles), cannula needles (Table, Fig. 1) , trocars for puncturing cavities, in particular in newborns, trocars-catheters (Table, Fig. 2), etc., syringes for injections, infusions, washing cavities (see Syringes). 2. Cutting instruments for cutting tissue: knives, lancets, various scalpels (Table, Fig. 3, 4, 5), including scalpels with a limiter (see Surgical knives), chisels for cutting bone, removing tumors on bones, opening cavities in tubular bones and chisels for crushing bone tissue during ear operations (see Otorhinolaryngological instruments), valvulotomes for cutting the valves of the heart and great vessels (Table, Fig. 6), punchers for biting out and removing areas of soft and bone tissue (for example, a heart valve cusp cutter; table, fig. 7), nippers - for biting, biting (for example, nippers for the first rib; table, fig. 8), scissors for cutting soft, bone tissue - delaminating-cutting, at the end of one blade there is a wedge-shaped platform, which makes it possible to preliminarily separate the tissues and eliminate their unnecessary trauma (Table, Fig. 9), and for auxiliary manipulations (see Surgical scissors); saws for sawing bones during resections, amputations and other operations, for cutting plaster casts (Table, Fig. 10) - knife (Table, Fig. 11), frame (Table, Fig. 12), sheet, wire (see Neurosurgical instruments, Orthopedic instruments); drills and cutters - instruments for forming canals, drilling holes in bones, as well as dental burs (see Dental instruments); scraping instruments - spoons for scraping out fistulas, taking biopsies (Table, Fig. 13, 14, 15), removing softened bone tissue, raspers for separating the periosteum, pleura, skin (Table, Fig. 16, 17, 18), gums . 3. Pushing instruments: dilators for creating convenient access to the operated area - retractors (Table, Fig. 24), mirrors, spatulas, spatulas, hooks, elevators (see Expanders), dissectors - for separating tissues, isolating tubular organs, temporary clamping of blood vessels, ducts, ligature capture (Table. , rice. 19, 20, 21, 22,23). 4. Clamping instruments: for clamping organs, tissues, ducts, vessels (Table, Fig. 25, 26), for attaching surgical linen, etc. (see Surgical clamps). This group of instruments also includes forceps intended for inserting tampons and drainages into the depths of the wound, removing foreign bodies, supplying sterile instruments and dressings, as well as surgical, anatomical and special tweezers (see Tweezers); forceps designed for grasping and holding various tissues, removing foreign bodies and other purposes (see Medical forceps); needle holders (Table, Fig. 27, 28) for holding surgical needles when suturing; clips (table, fig. 29); crushing instruments that cause tissue destruction - gastric and intestinal splints, designed to firmly hold the organ; they are applied to the part of the organ to be removed. 5. Probing and bougie instruments for insertion for diagnostic and therapeutic purposes into natural or pathological canals and cavities (see Bougies, Probes). Catheters (see), cannulas (see) are intended for removing fluids, mucus, washing cavities, inhaling oxygen and other purposes (see Intubation). 6. Mechanized instruments: for connecting (suturing) organs and tissues with metal staples (see Stapling devices); instruments with spring, electric and pneumatic drives, for example, needleless injectors (see) for mass vaccinations, dermatomes (see) for cutting skin grafts during skin grafting, etc. 7. Auxiliary instruments: accessories and devices that do not come into direct contact with tissues of the body, but necessary during operations (hammers, screwdrivers, braces, etc.).

    Medical kits containing various types of instruments are intended to perform certain surgical interventions (for pulmonary surgery, for operations on the bile ducts, on the esophagus, etc.) or to provide a certain volume of medical care (major operating set, small operating set, etc.). They are especially convenient for military field and emergency surgery.

    Sterilization of surgical instruments is carried out by thermal, chemical and radiation methods (see Sterilization). Mainly used in medical institutions thermal methods sterilization using steam or air sterilizers (see Sterilizers). Sterilization is carried out with steam at a temperature of 120-132° and a pressure of 1.1 - 2 kgf/cm 2, with hot air at a temperature of about 200. Surgical instruments with cutting edge or made from thermolabile materials that change their properties after high-temperature treatment, sterilize chemically. method, keeping for a certain time in a liquid antiseptic (for example, 6% hydrogen peroxide solution) or gaseous chemicals. substances. Disinfection of surgical instruments is carried out by boiling in water in disinfection boilers or soaking in a 3% solution of hydrogen peroxide, 5% solution of phenol, etc. Methods for sterilization and disinfection of a specific surgical instrument are indicated in the passport or on the packaging of the instrument. After operation X. and. disinfected by immersion in a solution of phenol, hydrogen peroxide or other chemical. substances, washed with a stream of warm water, sterilized using one of the listed methods and placed for storage in a medical cabinet (see Disinfection). The ends of piercing tools and the edges of cutting tools must be protected from damage, so such tools are placed on stands or pieces of polyethylene or rubber tubes are put on the working ends, especially of microtools. Instruments that have a ratchet should only be locked onto the first tooth of the ratchet to keep it relaxed. If long-term storage is necessary, surgical instruments must be in the manufacturer's packaging; The lubricant should be replaced after a certain period. Repair of surgical instruments within warranty period carried out by the manufacturer.

    Table. Some types of general surgical instruments and their main purpose

    Name of the tools (the figure number is indicated in parentheses)

    Total length (L), working part size: length (l), width (b), diameter (d); bending radius (R)

    Instruments for punctures and perfusions (stabbing)

    Needle-cannula for Cold perfusion during operations on cardiac vessels (1) Trocar-catheter (2)

    L- 60 mm; d=1.5 mm

    L - 2 50 mm; d - 2.8;

    Instruments for cutting and separating tissue (cutting)

    Scalpel with depth limiter for deep cavities (3) Scalpel for removing sutures (two types) (4,5)

    L = 270 mm; 1=30 mm

    L = 1 50 mm; 1-6 and 8 mm; b= 4.5 and 6 mm

    Valvulotome with diamond-shaped knives (6)

    L=240 mm; 6=10 mm

    Heart valve cusp puller (7)

    L=3 0 0 mm; 1= 15 0 mm; b=20 mm

    First rib cutters (8)

    Peeling-cutting scissors for operations on the chest and abdominal cavity in newborns (9, 9a - working part, side view)

    /-,=160 dm; Z=30 mm

    Saw for cutting plaster casts (10)

    Medical knife saw (11)

    Medical frame saw with three interchangeable blades (12)

    Instruments for curettage, biopsy, tissue separation

    False for taking a biopsy from the bronchus for the purpose of diagnosing malignant neoplasms, curved (13)

    L=497 mm; d=3 mm

    straight (14)

    L=500 mm, d = 3 mm

    Spoon for curettage of fistulas (15)

    Raspatory for pulmonary surgery spoon-shaped large small (16)

    L=300 mm; 6=50 mm L=31 0 mm\ 6=25 mm

    Curved cosmetic raspatory for facial skin detachment (17)

    L=2 00 mm; 6= 12 mm

    straight (18)

    L = 175 mm; 6=12 mm

    Instruments for spreading wound edges and pushing back tissues and organs

    Dissector for holding the appendage of the heart during operations on the heart vessels (19)

    L = 210 mm; R = 10, 15 mm

    Dissector with double curved handles (20)

    L=2 85 mm; 6=2.5 mm

    Dissector with curved handles and ratchet No. 1, 2, 3, 4 (21)

    L=210-220 mm; b = = 2.2 - 2.5 mm

    Dissector with straight handles (children) No. 1,2 (22)

    L = 220 mm; 6 = 2 and 3.5 mm

    Vascular dissector for pulmonary surgery (23)

    L = 2 7 0 mm; 6=3 mm; R = 13, 16 and 25 mj"

    Rack retractor for the chest cavity with replaceable mirrors (24)

    L=260 mm", 1 = 50 mm

    Instruments for clamping organs, tissues, ducts, vessels (clamping)

    Flat-spring clamp for atraumatic clamping of the intestine, curved (25) and straight (26)

    L=i 50 mm; £=65 mm; b - 4.5 mm

    Titanium needle holder with hard alloy on jaws for general surgery (27)

    L = 160, 200 and 250 mm; b-2 and 2.5 mm

    Needle holder for vascular suture (28)

    Vascular hemostatic clip (clip with notch) for atraumatic clamping of blood vessels, dia. 1 - 3 mm (29)

    L = 30 mm; b = 2 mm

    Note. The table includes tools not listed in other BME articles. See also: Surgical clamps, Neurosurgical instruments, Surgical knives, Forceps, Retractors, Medical forceps, etc.

    Bibliography: Borodulin F. R. History of medicine, Selected lectures, M., 1961; Kabatov Yu. F. Medical instruments, equipment and equipment, M., 1977; Timakov V.D. Man, medicine and scientific and technical progress, M., 1971; Thompson S. J. S. Evolution and development of surgical instruments, Brit. J. Surg., v. 25, p. 1, 1937.

    M. N. Vyrzhikovskaya.

    Very often in order to save human life, prompt surgical intervention is necessary. This requires special medical instruments. It is known that surgical instruments have been used by humans since ancient times. What types of them exist today?

    Surgical instrument: what is it?

    It is understood as a type of medical instrument used during various surgical procedures. It is used to dissect tissues of different densities, remove tumors and polyps, perform clamping, puncture, and also to study narrow cavities and channels of the human body.

    Surgical instruments can be simple, single-piece (such as scalpels) or complex, mechanized, which can be equipped with electric and pneumatic drives. The latter are used for more complex operations.

    Medical surgical instruments are made, as a rule, from special stainless steel (chrome or nickel plated) or from titanium alloys.

    History of surgical instruments

    For any area human activity characterized by its own historical path of development. But as for ancient surgery, very few facts and written references have survived to this day that would illuminate this stage of its development.

    However, we do know that the earliest surgical instruments were made from flint, ivory and stone. Archaeological finds confirm the fact that in ancient times our ancestors even did it very successfully.

    We have much more information about the ancient Greek period of development of medicine and surgery in particular. Thus, the first work on the description of medical instruments was created by Hippocrates and Celsus. They also described in detail about a hundred surgical operations that were performed at that time.

    Rapid development of medicine has been observed since beginning of the 19th century century. Interestingly, during this period both functional and very beautiful surgical instruments were produced (photo below). Very often they even looked like souvenirs. True, over time, the criterion of beauty in the manufacture of medical instruments faded into the background. The main and only advantage was functionality and quality.

    Surgical instruments: names, classification and main types

    Medical surgical instruments are classified according to several parameters: by design complexity, functional purpose and area of ​​application.

    So, functional classification There are the following types of surgical instruments:

    • cutting;
    • expanding;
    • probing;
    • bougie;
    • piercing and drainage;
    • clamping type tools.

    By area of ​​application, all tools are divided into the following groups:

    1. Obstetrics and gynecology.
    2. Neurosurgical.
    3. Traumatological
    4. Ophthalmological.
    5. Microsurgical.
    6. Urological.
    7. Dental and others.

    Scalpels and their purpose in medicine

    The word "scalpel" is translated from Latin as "knife". Thus, the purpose of this instrument is quite obvious: it is used to dissect tissue, open polyps and growths, etc.

    It is interesting that until the beginning of the twentieth century, the so-called lancet was used in surgery - the predecessor of the modern scalpel. It differed from the latter in that it had sharp blades on both sides. Modern scalpels are sharpened only on one side and have total length up to 15 centimeters.

    These surgical instruments can be all-metal or combined (disposable), which combine both metal and plastic parts. It should be noted that the latter are used much more often in modern medicine. Also today they use so-called collapsible scalpels with removable blades.

    Reusable scalpels are made of high quality stainless steel. Ordinary chrome steel is also suitable for the production of disposable tools. The most expensive are scalpels for ophthalmology, because the manufacture of their blades requires a very expensive material - leucosapphire.

    Based on the area of ​​application, surgical scalpels are divided into:

    • pointed (they are used when it is necessary to make a local and deep tissue incision);
    • abdominal (used for long areal incisions);
    • cavitary (they are used to work on wounds);
    • laser (beam).

    Medical tweezers

    Tweezers are ancient invention, invented for manipulating too much small objects, which are inconvenient (or impossible) to grasp with your hands. Tweezers are used in most different areas human activity, including in medicine, as surgical instruments.

    They are practically indispensable for any operation. There are several types of medical tweezers:

    • actually surgical (used to hold and fix dense tissues of the body);
    • anatomical (they are used when working with more delicate tissues in order to avoid injury);
    • neurosurgical (used in brain surgery).

    Clamps and their main types

    A surgical clamp is a special medical instrument for clamping blood vessels (primarily). In design it is very similar to ordinary scissors. The material from which the clamps are made is usually stainless steel or titanium.

    There are several types of medical clamps, depending on the area of ​​their direct application:

    • clamps to stop bleeding - they temporarily clamp blood vessels, the bases of organs, as well as tissues (in modern surgery, the so-called Fedorov, Kocher, Billrott and others clamps are used);
    • window clamps - used to capture and hold parts of organs and tissues, polyps, growths ( a separate species the fenestrated medical clamp is a tongue depressor);
    • pulps, or so-called intestinal clamps, are designed to compress the intestinal walls. They can be elastic (which do not injure the intestinal walls) and crushing;
    • auxiliary clamps - used for various secondary purposes during operations (for example, for fixing dressing material, supplying tampons or medical instruments, etc.).

    Medical nippers and their use in surgery

    This instrument is also very widely used in surgery. Their main function is to bite through hard tissues (cartilage and bones). The design of this instrument helps to make the work of the surgeon operating on the patient as easy as possible.

    In modern surgery they use the following types medical cutters:

    • Egorov-Freidin wire cutters (for performing operations on the skull or spine);
    • Dahlgren wire cutters (used exclusively in neurosurgery);
    • Liston wire cutters (used for spinal surgeries);
    • Jansen nippers (nippers with short cutting elements, which are also used in spine surgeries).

    Needle holders in surgery

    A needle holder is a special type of medical instrumentation, which is assigned special functions during operations. It is designed for needle manipulation when applying surgical sutures to tissue.

    Surgical needle holders are made exclusively from stainless steel. The needle holder can be a solid instrument or consist of several removable elements. The handles of this instrument are usually designed in the form of rings to make it easier for the surgeon to work with it. In some needle holders, the handles are fixed by the surgeon's hand, while in others this function is assigned to the ratchet - a special locking lock.

    Most surgical needle holders have the same dimensions and are close to oval in shape.

    Medical instruments for dentistry

    All instruments used in modern dentistry can be divided into two large groups. The first combines diagnostic instruments, as well as instruments for examining the oral cavity (spatula, spatula, mirror, tweezers, dental probe, and others). The second group consists of dental surgical instruments.

    Dentists are also forced to perform their operations in the patient's mouth. They are helped in this by special dental instruments, which are divided into the following types:

    • cutting, used for cutting gums, cutting and exfoliating soft tissue, working with bone tissue (these include trephines, scalpels and dental scissors);
    • dental instruments for tooth extraction;
    • instruments designed to bring the edges of cuts and wounds closer together;
    • a special group of instruments for dental implantation;
    • instruments for emergency dental care;
    • auxiliary dental instruments.

    Surgical instrument set

    None of them modern operations does not work without a pre-prepared set necessary tools. The basic surgical set of instruments includes:

    1. Straight forceps clamp (can be one or more).
    2. Linen clips (for fixing dressings).
    3. A set of scalpels (both a pointed and a belly scalpel must be prepared, and necessarily in several copies).
    4. Clamps to stop bleeding (Mosquito or Billrott type).
    5. Medical scissors (straight and with curved working areas, several copies).
    6. Surgical tweezers (various sizes).
    7. Medical hooks for widening wounds (several pairs of hooks).
    8. Surgical probes.
    9. Kit different games for sewing fabrics.
    10. Needle holders.

    In addition, individual surgical operations and manipulations have their own sets of instruments. For example, there are special surgical kits for performing craniotomy, trachiostomy, laparotomy, gastric resection, limb amputation and so on.

    Pre-treatment of surgical instruments

    Before using surgical instruments directly during surgery, they must be properly prepared and processed. Sterilization of surgical instruments before any operation is mandatory.

    Main and classical method processing of medical instruments involves boiling. For this purpose, modern surgery uses sterilizers - electric or simple. The boiling method is suitable for processing tools made of metal, glass and rubber. Boil them in water or in alkaline solutions. The duration of sterilization in boiling water should be at least twenty minutes. After this, medical instruments are removed from the liquid and dried on a special cloth.

    Processing of large surgical instruments, as well as large basins and utensils, is carried out using the burning method (using alcohol). However, this method may damage or damage the cutting parts of some medical instruments.

    There is also a so-called “cold” sterilization method, when instruments are immersed in special antiseptic liquids for some time. Expensive and optical instruments are processed in gas sterilization chambers.

    Finally

    Surgical instruments have been known since Ancient Greece and Rome. The first physician in history, Hippocrates, described them in detail in his book. Today there are a huge number of medical instruments for surgical interventions. All of them are made from high-quality materials, and modern production technologies allow them to be used effectively in the most complex operations.

    Surgical instruments for dentistry German company Kohler can be purchased -

    All surgical instruments can be used to create sets that will allow you to perform typical surgical operations.

    On the operating nurse’s instrument table there should be “connecting instruments” - i.e. those that only the operating nurse uses - scissors, small and long anatomical tweezers, 2 forceps, 4 linen tacks for processing and delimiting the surgical field.
    Basic set - it includes tools of the general group that are used in any operations and are included in the elements of the operation.
    For specific operations, special tools are added to them.

    Basic set of surgical instruments

    Figure 12. Basic set of surgical instruments.
    1 - straight forceps (according to Gross-Mayer); 2 - clothes pins; 3 - button probe (Voyachek); 4 - grooved probe; 5 – set of surgical needles; 6 - atraumatic needle with suture thread.

    1. A forceps is used to process the surgical field. There may be two of them.
    2. Clothes clips - for holding the dressing material.
    3. Scalpel – there should be both pointed and belly, several pieces, because They have to be changed during the operation, and after the dirty stage of the operation they have to be thrown away.
    4. Billroth, Kocher, “mosquito” hemostatic clamps are used in large quantities.
    5. Scissors – straight and curved along the edge and plane – several pieces.
    6. Tweezers - surgical, anatomical, claw, they should be small and large.
    7. Hooks (retractors) Farabefa and serrated blunt – several pairs.
    8. Probes – button-shaped, grooved, Kocher.
    9. Needle holder.
    10. Different needles - set.

    Set of surgical instruments for postsurgical treatment of wounds(used for working on soft tissues only)

    Removing microorganisms that have entered the wound by excision of the edges and bottom of the wound or tissue dissection;
    - removal of all damaged tissues, blood clots, which are a breeding ground for microorganisms;
    - conversion of all types of wounds to incised wounds to accelerate regeneration processes;
    - thorough, complete and final hemostasis;
    - restoration of the anatomical integrity of damaged tissues by suturing and, if necessary, draining the wound.

    Indications: PHO are subject to:

    Extensive soft tissue wounds with crushed, torn, uneven edges and heavily contaminated;
    - all wounds with damage to large blood vessels, nerves, bones.
    PHO is carried out within 24–48 hours and should be as immediate and comprehensive as possible. Preparation for PSO consists of cleaning the skin around the wound, treating the surgical field according to the method used in this medical institution, and premedication. PSO begins with general or local anesthesia.

    Contraindications:

    Shock, acute anemia,
    - collapse, development of purulent inflammation.

    Used for PHO general set tools.

    Set of surgical instruments for laparotomy


    Figure 13. Set of instruments for laparotomy.
    1 - rack retractor according to Gosse; 2 – Collin retractor; 3 - surgical retractor (mirror) according to Kocher; 4 - Reverden spatula

    To perform surgery on any organ of the abdominal cavity, transection or laparotomy is performed.

    Indications: used for acute and chronic diseases of the abdominal cavity and retroperitoneal space, injuries and damage, sometimes for diagnostic purposes.
    An extended general set is used - a general set, which is expanded with Gosse and Mikulic retractors, abdominal speculums - Roux and saddle, hepatic and renal speculums.
    - Expand the hemostatic clamps and add Mikulic, Fedorov, fenestrated, hepato-renal clamps, a ligature dissector and a Deschamps needle.
    - Tweezers and scissors should be both small and large (cavity).
    - Intestinal and gastric pulps,
    - Reverden spatula,
    - Liver probe and spoon.

    Set of surgical instruments for appendectomy and hernia repair

    Surgery to remove the appendix and repair the hernia.
    Indications: acute attack of appendicitis, strangulation of hernial contents. The operation should be performed urgently, within the first hours of the onset of the disease. For a non-strangulated hernia - in the “cold” period, after a complete examination of the patient.
    Set of instruments: a general surgical set is used, abdominal instruments are added - Mikulicz clamps; abdominal mirrors - saddle-shaped and Roux.

    Set of surgical instruments for laparocentesis (puncture of the abdominal cavity)


    Figure 14. Trocar set.

    Performed for ascites, a similar operation can be used to diagnose injuries and diseases of the abdomen.
    A common set of tools is being assembled, because Patients may be obese and in order to insert a trocar it is necessary to make a tissue incision and then apply sutures. In patients with a small amount of subcutaneous fat, only a trocar can be used.

    Don't forget the PVC tubes that fit the diameter of the trocar!

    Set of surgical instruments for cholecystectomy


    Figure 15. Cholecystectomy instrument set.
    1 – ligature dissector; 2 – hepatic mirror; 3 – spoon for removing gallstones

    It is used for diseases of the gallbladder, liver, and liver injuries.

    Surgical instruments:

    1. General set of instruments, expanded for laparotomy
    2. Fedorov clamp
    3. Ligature dissector, Deschamps needle
    4. Hepatic mirrors,
    5. Liver tube and liver spoon
    6. Hepatic-renal clamp
    7. A scoop used in case of liver injury to remove blood from the abdominal cavity.

    Set of surgical instruments for gastric resection


    Figure 16. Lana gastric-intestinal clamp, double.


    Figure 17. Lever gastric suture.

    It is used for perforated and regular ulcers of the stomach and duodenum, for wounds of the stomach, and stomach tumors.

    Tools:

    1. Extended general set for laparotomy
    2. Zhomy
    3. Hepatic mirrors
    4. Fedorov clamp, ligature dissector
    5. Window clamps

    Instruments for operations on the chest wall and organs of the chest cavity

    Instruments are used for injuries to the chest wall, for penetrating wounds, for injuries to the organs of the chest cavity, for purulent pathology and specific diseases of the organs.

    Tools:

    1. General set of tools,
    2. Doyen's rib spreader and Doyen's rib cutters,
    3. Screw mechanical retractor,
    4. Luer lock clamps,
    5. Fedorov clamp,
    6. Ligature dissector and Deschamps needle.
    7. Special instruments used in cardiovascular surgery.

    Set of surgical instruments for craniotomy

    Set of tools - a general set of tools is used, but when the wound expands, the use of pointed hooks is necessary.


    Figure 18. Special set of instruments for craniotomy.
    1 – rotary with a set of cutters
    2 – Dahlgren cutters, Luer cutters
    3, 4 – raspatory – straight and curved
    5 - Volkmann's bone spoon
    6 – Jigli saw with handles and Palenov guide

    1. Rasp
    2. Brain spatulas of different widths
    3. Rubber balloon “pear”
    4. Special neurosurgical hemostatic clamps

    Tracheostomy kit


    Figure 20. Tracheostomy set.
    1 – blunt hook for the isthmus of the thyroid gland; 2 – sharp hook for holding the larynx and trachea; 3 – tracheal dilator; 4,5,6 – tracheostomy cannula assembled and disassembled.

    Opening the windpipe. Emergency tracheostomy is performed to immediately provide air access to the lungs when the airways are blocked, in patients with tumors of the larynx or vocal cords.

    Indications:

    Damage to the larynx and trachea;
    - stenosis of the larynx and trachea due to inflammatory processes and neoplasms;
    - foreign bodies trachea and larynx;
    - the need for long-term mechanical ventilation.

    Tools:

    1. General purpose tools.
    2. Special tool kit:
    - Single-prong hook – a small, blunt hook
    - Trousseau tracheal dilator
    - Double tracheostomy cannulas of various sizes, consisting of outer and inner tubes. The outer tube has holes on the side for ribbons with which it is tied around the neck.

    Set of surgical instruments for skeletal traction


    Figure 21. Skeletal traction tool kit.
    1 – hand drill; 2 – Kirschner brace with a wire for skeletal traction.

    This kit does not require a common set of tools. Used to stretch a bone during a fracture.

    Tools:

    Drill, hand or electric
    - Kirschner bracket
    - Set of knitting needles
    - Wrench for tightening nuts
    - Spoke tension wrench
    This kit also requires rubber stoppers to hold the gauze ball in place.

    Set of surgical instruments for limb amputation


    Figure 22. Set of instruments for limb amputation.
    1 – retractor; 2 - Gigli wire saw; 3 – Palenov handles; 4 – hemostatic tourniquet; 5 – set of amputation knives.

    Removal of the distal part of the limb.

    Indications:

    Limb injuries;
    - malignant tumors;
    - tissue necrosis as a result of frostbite, burns, obliterating endarteritis.

    The purpose of amputation is to save the patient’s life from severe intoxication and infection emanating from the lesion and to create a functional stump suitable for prosthetics.

    Set of tools:

    General surgical kit

    1. Hemostatic tourniquet
    2. Set of amputation knives.
    3. Raspator for moving the periosteum
    4. Arc or sheet saw and Jigli wire saw
    5. Bone nippers Liston or Luer
    6. Rasp for smoothing bone sawdust
    7. Safety razor blade in a Kocher clamp for truncation of nerve trunks
    8. Bone holder Ollier or Farabeuf
    9. Retractor for protecting soft tissues when sawing bones and for moving soft tissues before sawing
    10. Volkmann spoon

    Set of surgical instruments for applying and removing sutures

    For suturing

    1. Surgical tweezers.
    2. Needle holder.
    3. Set of needles.
    4. Scissors.

    For removing stitches

    1. Anatomical tweezers.
    2. Pointed scissors.

    EAT. Turgunov, A.A. Nurbekov.
    Surgical instruments

    31875 0

    The high quality of operational technology is determined not only by the mastery of tools, but also by the ability to accurately and quickly select the tool necessary to solve a momentary task.

    There are general surgical instruments (necessary for any operation) and special ones.

    1. Tools for separating tissues (cutting): scissors (Fig. 1.5), scalpels (Fig. 1.6), saws (Fig. 1.7).


    Rice. 1.5 Medical scissors: 1 - for cutting tissue in depth, 230 mm; 2.3 - blunt-ended straight and curved, 140 mm; 4 - with one sharp end




    Rice. 1.6 Surgical knives and scalpels: 1 - small and medium (amputation) knife; 2 - brain knife: 3 - cartilage and resection knife; 4.5 - . plaster knives; 6 - pointed and belly scalpels; 7 -. scalpel with removable blade




    Rice. 1.7 Medical saws: 1 - frame (arc); 2 - knife; 3 - wire; 4 - leaf (anatomical leaf); 5 - for cutting plaster casts


    Based on the shape of the blade, a distinction is made between belly and pointed scalpels; the former are convenient for cutting and preparing tissue, the latter - where it is necessary to make a puncture and then an incision (for example, when opening an abscess). Scalpels with removable blades are also available.

    Scissors can be blunt-pointed straight, blunt-pointed curved (Cooper), with one sharp end, etc. To cut bandages, scissors with a button curved along the edge (Lister) are used.

    2. Instruments to stop bleeding: hemostatic clamps (Fig. 1.8) and ligature needles (Fig. 1.9).


    Rice. 1.8 Hemostatic clamps: 1-with oval jaws, 120 mm; 2,3.4 - gear, 130, 160, 200 mm; 5 - for deep cavities, curved



    Rice. 1.9 1 - ligature needles (blunt and sharp, small and large); 2 - bone spoons; 3,4,5 - surgical probe, button-shaped, grooved, goiter


    The most commonly used clamps are threaded (Billroth), threaded and serrated (Kocher), mosquito type, and elastic clamps for vessels.
    Ligature needles (Deshana) are intended for carrying out ligatures (threads for ligating a vessel).

    3. Auxiliary instruments: tweezers (Fig. 1.10), hooks, probes, forceps, clamps for surgical linen. Tweezers are distinguished between anatomical (with a transverse notch on the jaws), surgical (toothed) and toothed-clawed. Mikulicz clamps are used to attach sterile linen to the peritoneum; it resembles a Kocher clamp, but its jaws are curved along a plane.



    Rice. 1.10 Tweezers: 1 - surgical, 2 - anatomical


    Hooks (Fig. 1.11) serve to expand wounds; they can be jagged (sharp and blunt) and lamellar (Farabeuf hooks).
    Probes are available in button and grooved types; a Kocher goiter probe is less commonly used.


    Rice. 1.11 Serrated surgical hooks


    A forceps is used to supply tools and napkins.

    4. Tools for joining fabrics: needle holders (Fig. 1.12) and needles. Needles are intended for suturing, needle holders are for holding and guiding needles through tissue. Triangular cutting and round piercing needles are available in various sizes and curvatures (by numbers). There are also special needles for the liver (with a rounded end), atraumatic needles for the liver (with a rounded end), and single-use atraumatic needles. Michel brackets and tweezers are sometimes used for application to the skin.


    Rice. 1.12 Needle holder: 1 - for applying a vascular suture; 2 curved handles and ratchet, 170 mm; 3 - Troyanova, 180 mm; 4 - straight with straight ring handles and ratchet, 200 mm; 5 - curved with straight ring handles and ratchet, 200 mm; 6.7 - straight and curved with straight ring handles and ratchet, 160 mm

    Special surgical instruments are used for certain types of operations.

    1. Instruments for operations on the abdominal organs (Fig. 1.13): Gosse and Mikulic retractors (with a ratchet), mirrors for the abdominal wall, for retracting the liver, soft and crushing gastric and intestinal clamps, Buyalsky’s spatula, a plate for pushing out the viscera (spatula Reverden).


    Rice. 1.13 Wound dilating medical instruments: 1 - hepatic speculum; 2 - mirror for the abdominal wall; 3 - mirror for renal abduction; 4 - lifts for soft tissues; 5 - mirror for the heart; 6 - Buyalsky spatula


    2. Instruments for operations on the organs of the thoracic cavity (Fig. 1.14): screw wound retractor, guillotine and Stille rib scissors, Doyen-type rib splitter, forceps for bringing the ribs together, fenestrated forceps for grasping the lung, UKB-25, UKL-60 stapling devices , instruments for heart surgery (commissurotomy, valvotomy, etc.).



    Rice. 1.14 Retractor: 1 - double-leaf with ratchet; 2 - without ratchet (sled type); 3 - screw for ribs


    3. Instruments for operations on bones: chisels (Fig. 1.15) flat and grooved, hammer, pliers (Fig. 1.16) with round jaws (Luer), with straight jaws (Piston), forceps for holding bones (Farabefa, Ollier), frame saw, twisted wire saw (Gigli), parser, sharp bone spoons (Volkman); for limb amputation - amputation knives, retractor, etc.



    Rice. 1.15 Medical chisels: 1 - flat, wide: 2 - grooved; 3 - spoon (Korneva)




    Rice. 1.16 Medical bone pliers: 1 - with straight spear-shaped jaws; 2 - articulated with double gear; 3 - curved along the plane (Liston); 4 - articulated with double gear, with round jaws, curved along the plane


    4. Instruments for tracheostomy: tracheostomy cannulas, tracheal dilator (Trousseau), single-prong hook.

    5. Neurosurgical instruments (Fig. 1.17): a brace with a set of cutters, a Gigli saw, Dahlgren, Egorova-Freidin nippers, a universal retractor, scissors, knives and neurosurgical spatulas, metal clips to stop bleeding, instruments for applying them.



    Rice. 1.17 Neurosurgical instruments: 1 - brace with medical cutters (plum-shaped and spear-shaped); 2 - Dahlgren cutters; 3 - neurosurgical pliers; 4 - Egorov-Freidin cutters; 5 - nippers for the occipital bone


    6. Instruments for urological operations: metal catheters, ureteral catheters, cystoscopes, Fedorov’s renal clamp, renal speculum, etc.

    7. Instruments for operations on the intestines: pulp (Fig. 1.18), rectal speculum, fenestrated hemorrhoidal clamp (Luer), biopsy forceps.



    Rice. 1.18 Pulp: 1 - gastric and intestinal; 2 - intestinal with a hinged device; 3 - gastric


    Nychik A.3.