Needles, butterfly catheter for infusion into small veins. Butterfly catheter - for all occasions How to use a butterfly for intravenous administration

Device for infusion into small veins "Butterfly needle" (butterfly needle-catheter)

1st TYPE. BUTTERFLY NEEDLES FOR INTRAVENOUS INFUSIONS.

Becton Dickinson needle butterflies

1.1. Structure of a butterfly needle for intravenous infusions

(click to enlarge)

Flexible, thin transparent tube (1).

(2) Connection Luer or Luer Lock(Luer Lock) at the distal end of the tube with (3) protective cap(for convenience with repeated infusions, it gives the opportunity to choose depending on the medical procedure being performed)

(4) Needle into vein

(5) Flexible wings

1.2. Purpose of a butterfly needle for intravenous infusions

Administration of medications into peripheral small veins during intravenous infusions, especially for patients in an unstable condition (neurosis, intoxication, excitability, epilepsy, etc.), as well as infants and young children

Administration of medications to animals

2nd TYPE. BUTTERFLY NEEDLES FOR BLOOD COLLECTION.

2.1. The structure of a butterfly needle for drawing blood

(click to enlarge)

Flexible, thin transparenttube (1).

(2) Connection Luer at the distal end of the tube with (3) needle into a test tube(protected with a rubber coating to maintain sterility when installed in a test tube holder and additionally with a cap)

(4) Needle into vein- thin-walled medical steel needle for easy insertion into a vein (with a protective cap) on the proximal part of the tube.

(5) Flexible wings made of color-coded polypropylene.

2.2. Purpose of a butterfly needle for blood sampling

The butterfly needle (infusion cannula) is intended for:

Taking (sampling) blood for analysis - especially in patients in an unstable condition (neurosis, intoxication, excitability, epilepsy, etc.), as well as infants and young children.

In veterinary medicine

3.1. Features of needle butterflies

Size range of butterfly needles: 18G, 19G, 20G, 21G, 22G, 23G, 25G, 27G (the choice is determined by the diameter of the vein and the viscosity of the injection solution).

Flexible wings made of polypropylene are needed for easy and effective fixation on the surface of the skin. They are painted in accordance with the ISO standard and allow medical personnel find quickly right size. The wings are marked with needle size.

Flexible, thin transparent tube made of special medical polyvinyl chloride, about 300mm (30cm) long. This length allows manipulations to be carried out far from the site of vein puncture, which reduces the risk of needle displacement in the vein (the needle is firmly fixed) and accidental mechanical damage vessel walls.

Best price from 2.15 rub. per piece

Butterfly needle (infusion cannula)- intended for administering medications into peripheral small veins during intravenous infusions, or taking blood for analysis - especially in patients in an unstable condition (neurosis, intoxication, excitability, epilepsy, etc.), as well as infants and young children. The butterfly catheter is very often used in veterinary medicine.

Technical characteristics of butterfly catheter needle

Needle catheter butterfly- is a flexible, thin transparent tube made of medical grade polyvinyl chloride, 300 mm long, which allows manipulations to be carried out away from the venipuncture site, reducing the risk of needle displacement and accidental damage to the vein. At one end of the butterfly catheter there is a Luer or Luer-Lock connection with a protective cap (for convenience during repeated infusions, it allows choice depending on the medical procedure being performed), at the other end of the tube there is a catheter (thin-walled steel needle made of medical steel with triangular sharpening for easy insertion into a vein with a protective cap).
The applied butterfly needle size range: 18, 19, 20, 21, 22, 23, 25, 27 allows their use depending on the diameter of the vein and the viscosity of the injected solution. The intravenous butterfly catheter has flexible “wings” made of lightly colored polyethylene with a color ISO coding depending on the needle size allows you to quickly and easily select the desired perfusion device in accordance with the needle size, which ensures easy and effective fixation of the device on the skin surface. The needle size is additionally marked on the “wings”
Sterilization: ethylene oxide, non-toxic, pyrogen-free.
Best before date: 3 years
Package: individual sterile blister/polybag packaging, in cardboard box 100 pieces each.

Manufacturers:

" Wenzhou Beipu Science Technology Co", China
"Jiangxi Hongda Medical Equipment Group Ltd", China
Price: 2.15 rub.
Manufacturers:

"SF Medical Products GmbH" Germany
Price: 2.80 rub.
"Vogt Medical Vertrieb GmbH" Germany;
Price: 3.10 rub. (Luer/Luer Lock)
"Apexmed" Netherlands ;
Price: 3.00 rub. (LEFT!)

! After the injection, for hygiene care an injection adhesive plaster is used behind the puncture site

Buy with this product:

Butterfly needle with flexible catheter and luer adapterallows you to take blood from “problem” patients. Particularly relevant in pediatrics, psychoneurology, intensive care units and veterinary medicine.

A clinical blood test is one of the list of standard procedures for the prevention or treatment of patients. It allows you to estimate the amount of hemoglobin, red blood cells, leukocytes, platelets, and identify the color indicator. Blood is collected in only two ways - from the ring finger or from a vein. A needle or butterfly catheter is used to collect venous blood. What you need to know about medical instruments, what are its varieties and how to use a butterfly needle correctly?

What you need to know about the needle butterfly?

A butterfly needle is a standard medical needle that has a catheter attached to it. In practice, only two types of needles are used - hollow and surgical. "Butterfly" belongs to the first category. It can be used to perform injections, collect/transfer samples and biological samples. Most often, the needle is used to collect venous blood in children and patients with thin veins. The tubes are made of austenitic stainless steel of one of the types specified in the relevant state documentation.

The production of medical instruments is strictly regulated by the state to ensure maximum safety and quality. The needles themselves are used in pediatrics, some intensive care units, veterinary medicine and gerontology (the science of aging of all living organisms).

Catheter – medical instrument in the form of a tube, through which the vessels are connected to external environment for subsequent emptying. A soft catheter is attached to the butterfly needle. It is made of plastic materials such as plasticized polyvinyl chloride or rubber. For the “butterfly”, vascular catheters with a venous cannula are used. Cannula is a hollow soft tube that is inserted into the internal cavity human body. The catheter facilitates not only blood sampling, but also the introduction of drugs into the bloodstream or detoxification.

Absolutely all catheters require additional fixation. They are attached to the skin with patches, suture material or special fasteners. The cannula is equipped flexible clamp(made from lightly colored polyethylene), which visually resembles butterfly wings. Because of this similarity, the instrument got its name. The color of the retainer is not chosen for ethical reasons, but to indicate the size of the needle. Size range of needles: 18, 19, 21, 22, 23, 25, 27. Each number is assigned a specific shade of the palette, which helps doctors and nurses quickly navigate the instruments. To avoid confusion, the needle size is marked on the wings of the fixator and is additionally indicated on the sterile individual packaging.

What is a luer adapter?

The luer adapter is one of the components of the butterfly needle. Visually, it resembles a container for collecting, transporting and storing biological materials. One part of the device is a luer connector. With its help, the adapter is connected to the catheter holder. On modern market You can find two variations of the device for collecting blood - with a luer adapter or a holder holder. Luer allows you to perform several manipulations at once - take blood for analysis, conduct intravenous injection, attach the needle to the solution infusion system.

The second part of the device is a needle for piercing a vacuum tube. It is closed with a dense rubber cap, which prevents blood from splashing when removing or transporting the sample. All luer adapters are supplied in individual cases with an information label and perforations for visual inspection.

Advantages and disadvantages of medical instruments

The strength of the butterfly needle is its versatility. It is suitable for collecting biological fluid from patients of any age category. It is even used to diagnose the blood of newborns or babies who are on breastfeeding, if the amount of blood obtained from the heel with a lancet is not enough. Strong fixation of the catheter greatly simplifies the task for both the patient and the doctor or nurse. A medical professional will be able to easily and accurately obtain blood from even the most active and frightened clients. The advantages of the needle include minimal tissue trauma. Compared to conventional double-ended needles or vacuum tubes, the risk of nerve damage with a butterfly needle is significantly lower.

What are the disadvantages of a butterfly catheter? The first thing you should pay attention to is the size of the needle. It is much smaller than a standard double-ended blood collection needle. This increases the risk of cell damage. Platelets can simply stick together, and red blood cells can be destroyed, releasing into environment hemoglobin. To avoid this, the medical professional must select the correct needle size and strictly follow the rules for collecting biological material. Disadvantages can also include high cost butterfly needles, decreased pressure and “escaping” of the vein during the procedure.

Another disadvantage is the relatively slow blood flow. The smaller the needle is in the vein, the faster the body can recover and recover from stress (even minimal). When drawing blood with a butterfly needle, the liquid passes through the cannula quite slowly, which increases the time the needle remains in the vessel. As a result, a larger volume of blood may be required to fill the entire catheter tube, including the dead space. Some nurses use an empty vacuum tube to fill the "dead space" and then discard it.

If the amount of biological fluid obtained is still not enough, the medical professional performs a second venipuncture. He pierces the wall of the venous vessel again, inserts a needle and draws blood a second time.

Enter medications directly into the blood using intravenous catheters. They are installed once and can be used many times. Thanks to this, there is no need to constantly prick your hands in search of veins.

Principle of catheter design

First of all, the medical staff should know how to administer intravenous infusion of medications. But if patients know information about the procedure, they may be less afraid.

Catheter for intravenous administration medicines- This is a hollow thin tube. It is inserted into the bloodstream.

This can be done in the arms, neck or head. But inserting catheters into the vessels of the legs is not recommended.

These devices are installed so that there is no need to constantly pierce the veins. After all, this can cause them to become injured and inflamed. Constant damage to their walls leads to thrombus formation.

Types of devices

IN medical institutions can use one of four types of catheters. The following types are distinguished:

Models intended for short-term use;

Central peripheral intravenous catheters, which are installed in the veins of the arms;

Tunneled catheters, which are inserted into wide bloodstreams, such as the vena cava;

Subcutaneous venous catheters inserted in the area chest under the skin.

Depending on the materials used in the manufacture of these devices, metal and plastic models are distinguished. Choosing what you need in each specific case option is carried out only by a doctor.

A metal catheter for intravenous infusions is a needle that is connected to a special connector. The latter can be metal or plastic, some of them are equipped with wings. Such models are not used very often.

Plastic catheters are a connected plastic cannula and a transparent connector that are pushed onto a steel needle. Such options are used much more often. After all, they can be used longer than metal catheters. The transition from a steel needle to a plastic tube is smooth or cone-shaped.

Steel catheters

There are several metal options models designed for intravenous administration medicines. The most popular among them are butterfly catheters. They are a needle made of chromium-nickel alloy, which is integrated between two plastic wings. On the other side of them there is a flexible transparent tube. Its length is about 30 cm.

There are several modifications of such catheters.

So, they can be with a short cut and a small needle or with a flexible tube installed between the connector and the needle. This is intended to reduce the mechanical irritation that occurs when a steel IV catheter is used. A photo of such a device makes it possible to understand that there is nothing terrible if they install it on you. The picture shows that the needles in them are quite short.

A special peripheral intravenous catheter with soft wings can ensure the safety of a puncture even in hidden and hard-to-reach veins.

Disadvantages and advantages of metal models

In modern medical practice, steel options are used extremely rarely. After all, their service life is quite short - they can remain in the vein for no more than 24 hours. In addition, hard needles cause vein irritation. Because of this, thrombosis or phlebitis may develop. Also, the possibility of trauma or necrosis of part of the vein wall cannot be excluded. And this may cause extravasal administration of the drug.

Through such catheters, solutions are injected not along the blood flow, but at a certain angle. This causes chemical irritation of the inner layer of the vessel.

To prevent the possibility of complications when working with steel intravenous catheters, they must be firmly fixed. And this limits the mobility of patients.

But, despite all the disadvantages described, they also have a number of advantages. The use of metal catheters reduces the risk of developing infectious lesions, because steel does not allow microorganisms to enter the bloodstream. In addition, they are easier to install in thin veins that are difficult to visualize. Therefore, their use is practiced in neonatology and pediatrics.

Modern devices

In medical practice, catheters with steel needles are currently practically not used, because the comfort and safety of the patient come to the fore. Unlike metal model, a plastic intravenous peripheral catheter can follow the bends of the vein. Thanks to this, the risk of injury is significantly reduced. The likelihood of blood clots and infiltrates is also minimized. In this case, the time that such a catheter remains in the vessel increases significantly.

Patients who have this plastic device, can move calmly without fear of damaging the veins.

Varieties of plastic models

Doctors can choose which catheter to place in a patient. You can find models on sale with or without additional injection ports. They can also be equipped with special fixing wings.

To protect against accidental punctures and prevent the risk of infection, special cannulas have been developed. They are equipped with a protective self-activating clip, which is installed on the needle.

For the convenience of injecting medications, an intravenous catheter with an additional port can be used. Many manufacturers place it above the wings, designed for additional fixation of the device. When administering medications into such a port, there is no risk of cannula displacement.

When purchasing catheters, you should follow the recommendations of doctors. After all, these devices, although similar in appearance, can differ significantly in quality. It is important that the transition from needle to cannula is atraumatic, and that there is minimal resistance when inserting the catheter through the tissue. The sharpness of the needle and its sharpening angle are also important.

An intravenous catheter with a Braunulen port has become the standard for developed countries. It is equipped with a special valve, which prevents the possibility of reverse movement of the solution introduced into the injection compartment.

Materials used

The first plastic models were not very different from steel catheters. Polyethylene could have been used in their manufacture. The result was thick-walled catheters, which irritated the inner walls of blood vessels and led to the formation of blood clots. In addition, they were so rigid that they could even lead to perforation of the vessel walls. Although polyethylene itself is flexible inert material, does not form loops, it is very easy to process.

Polypropylene can also be used in the production of catheters. Thin-walled models are made from it, but they are too rigid. They were mainly used to access arteries or to insert other catheters.

Later, other plastic compounds were developed, which are used in the production of these medical devices. Thus, the most popular materials are: PTFE, FEP, PUR.

The first of them is polytetrafluoroethylene. Catheters made from it glide well and do not lead to thrombus formation. They have high level organic tolerance, so they are well tolerated. But thin-walled models made of this material can be compressed and form loops.

FEP (fluoroethylene propylene copolymer), also known as Teflon, has the same positive characteristics, as PTFE. But, in addition, this material allows for better control of the catheter and increases its stability. A radiopaque medium can be injected into such an intravenous device, which will allow it to be seen in the bloodstream.

PUR material is a well-known polyurethane. Its hardness depends on temperature. The warmer it is, the softer and more elastic it becomes. It is often used to make central intravenous catheters.

Advantages and disadvantages of ports

Manufacturers produce several types of devices designed for intravenous administration of medicinal solutions. According to many, it is preferable to use cannulas equipped with a special port. But it is not always the case. They are necessary if the treatment involves additional infusion of medications.

If this is not required, a regular intravenous catheter can be installed.

A photo of such a device makes it possible to see that it is very compact. Devices without additional ports are cheaper. But this is not their only advantage. When using them, there is less chance of contamination. This is due to the fact that the injection element of this system is separated and changed daily.

In intensive care and anesthesiology, preference is given to ported catheters. In all other areas of medicine, it is enough to establish the usual option.

By the way, in pediatrics they can install a catheter with a port for injecting medications even in cases where children do not need to have an IV installed. This is how antibiotics can be injected, replacing injections into the muscle with intravenous administration. This not only increases the effectiveness of treatment, but also facilitates the procedure. It is easier to install a cannula once and almost imperceptibly inject the medicine through the port than to give painful injections several times a day.

Dimensions of plastic models

The patient should not choose which intravenous catheter he needs to buy.

The size and type of these devices are selected by the doctor depending on the purposes for which they will be used. After all, each of them has its own purpose.

The size of catheters is determined in special units - heych. In accordance with their size and throughput, a unified color marking has been established.

The maximum size for the orange catheter is 14G. This corresponds to 2.0 by 45 mm. You can pass 270 ml of solution per minute through it. It is installed in cases where the transfusion of significant volumes of blood products or other liquids is necessary. For the same purposes, gray (16G) and white (17G) intravenous catheters are used. They are capable of passing 180 and 125 ml/min, respectively.

The green catheter (87G) is installed in those patients who are routinely receiving red blood cell (blood) transfusions. It operates at a speed of 80 ml/min.

Patients who undergo long-term daily intravenous therapy (2-3 liters of solutions per day are infused) are recommended to use the pink model (20G). When installed, infusion can be carried out at a rate of 54 ml/min.

For cancer patients, children and patients who require long-term intravenous therapy, a blue catheter (22G) can be installed. It passes 31 ml of fluid every minute.

To install a catheter in thin sclerotic veins, yellow (24G) or purple (26G) catheters can be used in pediatrics and oncology. The size of the first is 0.7*19 mm, and the second is 0.6*19 mm. Their throughput 13 and 12 ml respectively.

Carrying out the installation

Every nurse should know how to place an intravenous catheter. To do this, the injection site is pre-treated, a tourniquet is applied and measures are taken to ensure that the vein is filled with blood. After this, the cannula, which the nurse takes in the hand with a longitudinal or transverse grip, is inserted into the vessel. The success of venipuncture is indicated by the blood that should fill the catheter imaging chamber. It is important to remember: the larger its diameter, the faster this biological fluid will appear there.

Because of this, thin catheters are considered more difficult to work with. The cannula should be inserted more slowly, and the nurse should also focus on tactile sensations. When the needle enters the vein, a hole is felt.

After contact, you need to push the device further into the vein with one hand, and fix the guide needle with the other. After completion of catheter insertion, the guide needle is removed. It cannot be reattached to the part remaining under the skin. If the vein has been lost, the entire device is removed and the insertion procedure is repeated again.

It is also important to know how intravenous catheters are secured. This is done using an adhesive plaster or a special bandage. The site of entry into the skin itself is not sealed, as this can lead to the development of infectious phlebitis.

The final step is flushing the installed catheter. This is done through installed system(for unported options) or through a special port. The device is also washed after each infusion. This is necessary in order to prevent the formation of blood clots in a vessel with an installed catheter. This also prevents the development of a number of complications.

Exist certain rules work with devices for intravenous administration of drugs.

All health workers who will select or install should know them. intravenous catheter. The algorithm for their use provides that the first installation is carried out from the non-dominant side at a distal distance. That is the best option is the back of the hand. Each subsequent installation (if long-term treatment is necessary) is done on the opposite hand. The catheter is inserted higher along the vein. Compliance with this rule allows you to minimize the likelihood of developing phlebitis.

If the patient undergoes surgery, it is better to install a green catheter. It is the thinnest of those through which blood products can be transfused.

In medical practice, for administering medications (infusion solutions) into peripheral veins of small diameter, as well as for collecting blood for analysis. infants and patients in an unstable condition (neurosis, intoxication, excitability, epilepsy, etc.) use a device such as a butterfly catheter (butterfly needle, infusion cannula). It is used as blood substitutes and infusion solutions in veterinary medicine.

A butterfly catheter is a flexible, thin, transparent tube that allows manipulation away from the venipuncture site, reducing the risk of needle dislodgment and accidental damage to the vein. At one end of the tube there is a thin-walled needle with a protective cap, and at the other end there is a Luer or Luer-Lock connection with a protective cap for convenience during repeated infusions, allowing choice depending on the medical procedure being performed. The tube is made of medical grade polyvinyl chloride, the needle is made of medical steel with a triangular sharpening for easy insertion into a vein. The butterfly catheter is also equipped with flexible wings made of lightly colored polyethylene, color-coded according to the ISO standard.

High-quality for infusion into small veins has the following characteristics:

• atraumatic needles that provide easy, painless insertion under the skin;
• sterility and absolute safety;
• non-toxic, non-pyrogenic;
• presence of a protective cap;
• thin flexible connecting tubes for infusion;
• easy and effective fixation of the device on the skin surface;
• a wide range of needle sizes, allowing their use depending on the diameter of the vein and the viscosity of the injected solution.

Buy a butterfly catheter for infusion into small veins