Hypodermic needle size. The difference between an insulin syringe and a regular syringe. General Consumable Specifications
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Few people know that if you are prescribed a course of intramuscular injections (even if they are given by a nurse), it is still better not to rely on state-owned materials, but to buy syringes with certain needles at the pharmacy, given your weight, gender and age. It is clear that thin and short needles are used for kids. And for adults? Experts say: it all depends on gender, weight, physique. Because women and men have a different layer of subcutaneous fatty tissue, and, therefore, with intramuscular injections, it is necessary to use needles of different lengths.
It is also important to consider completeness: obese patients need longer needles. Otherwise, a big nuisance may arise: because of the short needle, the medicine cannot be injected deep enough, and it does not enter the muscle, but into the subcutaneous fatty tissue. Over time, the drug, of course, “dissolves”, but, firstly, the effectiveness of treatment decreases (the medicine does not enter the bloodstream quickly), and secondly, a seal forms at the injection site, inflammation may occur, and pain appears. How to choose the right syringe and needles?
Ideally, when writing a prescription for a particular drug, the doctor should write in the same place what syringes and needles the patient needs to purchase, - says Andrey Grishkovets, Medical Director of the Society for the Development of Medicine and Healthcare. But, unfortunately, doctors don't do that. In the pharmacy, too, no one warns the buyer about this: pharmacists, when recommending a syringe, are guided only by its volume.
How to choose the right syringe and needles? Here is what a professional advises, the chief nurse of the Federal State Institution "GNITs PM Rosmedtekhnologii" Yulia Arkhangelskaya:
● The volume of the syringe should be slightly larger than the volume of the prescribed single dose of the drug;
● The thickness of the needle should depend on physical properties drug: the higher its viscosity (for example, an oil solution is prescribed), the larger the diameter of the needle should be;
● For subcutaneous injections, a needle 20-25 mm long can be used, for intramuscular injections, the length of the needle depends on the injection site: if it is done in the thigh, 25 mm is enough, if in the buttock, a needle 30 mm long is needed;
● If the patient is overweight, that is, his body mass index (weight divided by height squared) is above 30, the length of the needle should be at least 40 mm.
Law and order
Unfortunately, if the family has a chronic patient (cancer or hypertension), it is difficult to count on regular visits from the nurse. Even for money. Question - where to learn how to give injections to help close person? There are, of course, medical benefits, there is a "course" on the Internet. But this is a very serious risk, and the procedure itself requires training, skill. It would seem that it is possible to create paid master classes at the same clinics for those who wish, and for many the problem would be solved. But the law forbids it. Physicians do not have the right to teach the population the technique of injection. It's against the law. Injection - medical service which can only be provided by professionals with a medical background.
Law is law. But life has its own order. So the only way out is to ask the nurse, as they say, to conduct training privately. But keep in mind that the first independent injections to the patient must be done only under her supervision.
Your own director?
Even if you have been making injections at home for a long time and confidently, do not lose vigilance and do not forget about safety rules:
● Be sure to wash your hands thoroughly before handling, preferably blotting the skin with a clean gauze cloth, rather than wiping it with a daily hand towel.
● Be sure to check whether the name of the drug matches the one you are going to inject the patient, and also check the expiration date before opening the package.
● If the drug is in a sealed vial, after removing the protective cap, be sure to wipe the rubber cap with alcohol.
● When using the medicine in the ampoule, before opening it, be sure to wipe the glass with a cotton swab dipped in alcohol to prevent infection on the needle when it comes into contact with outside ampoules.
● Never use vodka to wipe the injection site - a 40% alcohol solution does not kill dangerous bacteria and microorganisms on the surface of the skin. But pure alcohol is also a bad option: it does not so much disinfect as it dries and tans the skin.
● Before injection, vertically raising the syringe with the drug, release air bubbles;
● If there is swelling, redness, etc. at the injection site, do not self-medicate - immediately consult a doctor to prevent the development of complications.
Syringes are now disposable, but their quality differs significantly, so choose good, high-quality syringes ...
From the package, the syringe must be removed from the side of the piston.
- When performing an injection, the cut of the needle should point upwards.
Before giving injections, you need to collect medicine ...
Ampoule solution kit:
1. Wash your hands well.
2. Shake the ampoule so that no solution remains in the narrow part of the ampoule.
3. File the ampoule a little with a nail file.
4. With a cotton ball moistened with alcohol, process the ampoule, break off the end of the ampoule.
5. Draw up the medicine.
6. Release the air from the syringe (there should be no air in the syringe!).
7. Put a cap on the needle, taking precautions.
Important: Before you "correctly" give injections, make sure that you do not touch the needle!
Dilution of powder in a vial:
1. Wash your hands well.
2. Read all labels on the vial.
3. Open the aluminum cover in the center with non-sterile tweezers or scissors.
4. Treat the rubber stopper on the vial with alcohol.
5. Draw solvent into the syringe.
6. Take the vial and syringe and pierce the rubber stopper in the center of the vial at an angle of 90 degrees.
7. Remove the vial with the needle and shake well until the medicine is completely dissolved.
8. Draw up the solution and remove the syringe with the needle.
All of the above is very important to learn how to give injections. This is the basis of this manipulation, learn this information before moving on to the injection technique.
Mesotherapy is a procedure for rejuvenating facial and body tissues, involving subcutaneous and intradermal injections with the introduction of small doses of therapeutic solutions to a depth of 2–4 mm.
The procedure is performed with the help of special syringes, the range of which is of great interest, especially for medical workers.
Proper selection of needles ensures minimal trauma when injecting the drug. As a result, the patient tolerates the procedure more easily, as it becomes less painful. This is very important because mesotherapy does not involve prior anesthesia due to the risk of swelling.
What are injection needles?
A disposable consumable for meso consists of metal, plastic and connecting parts.
Lebel needle
metal part, or tube, is made of steel. The tube has two ends, one of which is cut at an angle, and the other is glued into the plastic part.
plastic part is a polypropylene base, the color of which determines the diameter of the needle.
Connecting part- this is the place where a steel tube is attached to its plastic base using a special adhesive.
Sizes of needles for mesotherapy
Mesotherapy needles are made very thin in order to reduce pain during the procedure. The size of the outer diameter is calibrated according to the Gage scale (indicated by the letter G on the package).
For meso, sizes from 33G to 27G are used.
Most popular mesotherapy needles 30g and 32g
Correspondence of the sizes of mesotherapy needles on the Gage scale to their diameter in millimeters:
How to find out the size of the needle
For the most part, you can determine the size by the color of their plastic part (cap). There is a special standard for disposable injection needles that specifies their color codes.
Correspondence of the sizes and colors of the cap:
How to choose the diameter?
The diameter of the needle for mesotherapy is selected in accordance with the degree of density of the injected filler. For injections with high-viscosity fillers (hyaluronic acid), needles with a large diameter are used.
Thin needles are unable to pass dense preparations. They are applicable when introducing vitamin-mineral solutions.
What is the wall thickness?
Most have a standard wall thickness with an inside diameter of 0.22mm.
Reducing the wall thickness solves the problem of the impossibility of introducing viscous gels with thin needles.
The ultra-thin needle has a larger inner diameter, which increases its throughput. This allows the introduction of a more viscous filler without increasing the size. In this case, the patient does not experience pain, and bruises do not form at the injection site.
What are nanoneedles?
Nanoneedles have very thin walls. Their lumen allows the introduction of drugs of high viscosity. The inner diameter of the 33G nanoneedle is 0.16 mm, while for a conventional mesotherapy needle this figure is 0.22 mm.
What is the length of the mesotherapy needles?
Mesotherapy involves the introduction of meso-cocktails in small doses, so injections are carried out using short needles. A tool of this length allows the doctor to inject the solution to a shallow depth and eliminate injury in case of a fuzzy hit.
In mesotherapy, needles with a length of 3 to 25 mm are used, depending on the area being corrected.
Longer ones are used for body mesotherapy, shorter ones are used for the face. The shortest ones are applicable for procedures in the area of the eyes and lips.
There are needles for mesotherapy with adjustable length. When using them, the doctor can change the length of the input during the procedure. For example, when correcting nasolabial folds, the depth of the puncture will be greater than with mesotherapy in the eye area. Needles of different lengths are needed to carry out these procedures simultaneously. Adjustable length eliminates the need to change the needle during the procedure, which is an advantage.
On the package, the length is indicated after its diameter. For example, marking 33G (0.30×6) shows that the outer diameter is 0.30 mm and its length is 6 mm.
What are SIT needles?
SIT (S.I.T.) - needles with an injection depth limiter. They have the smallest size (length 2 mm) and a special design. SIT needle for mesotherapy is inside a plastic cap, which ends with a vacuum suction cup. The length of the cap corresponds to the length of the needle.
When the drug is injected, a vacuum effect is created, which reduces the pain of the patient. The stopper does not allow the needle to enter deeply, so the risk of injury to the skin is minimal. The depth of the punctures is about 1 mm, while the marks from the injections become almost invisible.
However, SIT needles have one drawback. Due to the fact that the tip is covered with a tight cap, the doctor has to make great efforts to make a puncture. Otherwise, the skin will remain intact, as the needle will not be able to pass through it.
How do mesotherapy needles differ from ordinary ones?
By appearance it is not easy to distinguish a syringe for mesotherapy from a conventional medical one. There is only one fundamental difference. Standard needles have a longer cut length than meso needles.
Thus, mesotherapy needles have a large cutting angle (about 30 degrees). This ensures an accurate intradermal hit and eliminates microtrauma.
Where can I buy needles for mesotherapy?
Specialized stores of medical supplies in large cities, in Moscow, St. Petersburg, etc. offer a wide range of needles for mesotherapy. Store consultants will assist in the selection of consumables depending on the purpose of their use.
They are sold only to practicing cosmetologists and certified clinics.
Internet shops and Internet atekas also provide the opportunity to buy wholesale and retail medical mesotherapy needles and syringes with convenient delivery.
Which consumable manufacturers are the most popular?
Currently, consumables for mesotherapy are supplied by foreign manufacturers. The market leaders are Belgian and Italian firms.
Terumo Neolus- products of the Belgian company. The Terumo Neolus has a triangular edge, which makes the tip look like a lancet. Due to this, the tip easily enters under the skin, 
while injections deliver minimal pain to the patient.
- They have the lowest puncture force, which is 0.2 - 0.28 Newtons at a rate of not more than 0.5 Newtons. This ensures minimal trauma during injection and facilitates the work of the doctor.
- They have an ultra-smooth silicone coating on the walls, so they easily enter the skin without damaging blood cells, which eliminates thrombosis at the injection site.
- The walls have increased strength with ultra-thin thickness. Terumo needles have a larger inner diameter compared to analogues from other manufacturers. Wider clearance improves throughput. This makes it possible to introduce more viscous preparations without increasing the diameter. The risk of bruising and injury following injections is therefore reduced.
Mesoram. Meso needles are manufactured by the Italian manufacturer RI.MOS. A distinctive feature is the ability to use one needle for up to 200 injections during one procedure. This is achieved thanks to Mesoram's special laser sharpening. As a result, they do not become dull for a long time, and soreness decreases when the filler is injected. RI.MOS manufactures standard and ultra-thin needles, which are used even in the treatment of varicose veins.
Hospital Products. The tip has a sharpening on three sides, while each of the sides is ground using ultrasound for three times. This technology reduces pain when injected.
The surface of the SFM needles, like those of Terumo, are silicone-coated, which eliminates thrombosis and makes the procedure more comfortable for the patient.
MesoRelle- a product of the Italian company Biotekne. It has a trihedral sharpening of the lancet type, which reduces pain during the injection. The needle does not damage blood vessels due to laser resurfacing. All products are supplied with a quality certificate and registered on the territory of the Russian Federation.
General characteristics Supplies:
- small length and small diameter;
- diamond sharpening like a lancet;
- silicone coating;
- sterility;
- availability of individual packaging.
The choice of the needle is carried out by the beautician in accordance with the task being solved. Different lengths are used for the face and body. The administration of large volume or high viscosity preparations may require the use of a larger diameter needle.
You might be interested:
Medical needles piercing or piercing-cutting instruments in the form of a thin rod or tube with a pointed end. In addition, they produce special ligature needles (see Surgical instruments) .
Depending on the purpose of I. m, they are divided into injection, puncture-biopsy and surgical. Injection needles are designed for the introduction of drug solutions, blood sampling from a vein or artery, blood transfusion. They are used together with syringes, as well as systems for transfusion of liquids or blood. Injectable ( rice. one
) is a metal tube, one end of which is sharply sharpened, and the other ends with a head for connecting to a syringe or an elastic tube (the inner diameter of the head hole for Record syringes is 2.75 mm, for Luer type syringes - 4 mm). Sterile disposable injection needles are becoming more and more common. Their use dramatically reduces the risk of infectious complications, they are convenient and do not require preliminary sterilization. The angle of cut of injection needles (β) is from 15 to 45 °: for injection needles with a long cut - 15-18 °, for needles for inserting catheters into a vein, for spinal puncture - 30 °, needles with a short cut for introducing radiopaque substances - 30 and 45°. The needles have a spear-shaped or dagger sharpening. The outer diameter of the needle ranges from 0.4 to 2 mm, length - from 16 to 150 mm. The number of the needle corresponds to its dimensions (for example, No. 0840 means that the diameter of the needle is 0.8 mm, length - 40 mm). For long-term transfusions of viscous liquids and blood, a Dufo needle is more often used, for blood transfusions - a needle with a rectangular head with transverse notches for better fixation with fingers. Needles with an emphasis are intended for intradermal injections, and needles with a safety bead - to limit the depth of injection. When transfusing blood and other liquids from vials, special needles (the so-called air vents) are used to introduce air instead of the flowing fluid. These needles are long and have one or two side holes. To attach needles to a rubber tube, a nozzle is used, and to attach needles with a Record-type tip to a Luer-type syringe and vice versa, transitional cannulas are used. Puncture-biopsy needles ( rice. 2
) are intended for puncture of a parenchymal organ or cavity with subsequent collection of tissue particles or fluid. These needles are similar to injection needles, however, as a rule, they have a greater length and diameter, while the needle, which fits tightly into the tube, acts as a stylet. Puncture-biopsy needles include: needle for spinal puncture (Spinal Puncture)
(Vira), diameter 1 and 1.2 mm, length 60; 90 and 120 mm: needle for puncture and drainage of the maxillary (maxillary) sinus; needle for puncture biopsy (Biopsy) of parenchymal organs; a bone marrow needle with an emphasis (Kassirsky type) for taking bone marrow during sternal puncture. A variety of puncture needles are trocars with a diameter of 2; 3; 4 and 7 mm. They are designed to puncture the walls of cavities (for example, abdominal, pleural) to evacuate accumulated fluid, remove gases, introduce liquid drugs or an optical tube of an endoscope (see Endoscopy) .
When applying pneumoperitoneum for laparoscopy, a Veress needle with a diameter of 2 mm, length from 70 to 150 mm. The mandrin, located inside the needle, with the help of a spring, automatically transforms its sharp end into a blunt one when passing through the parietal peritoneum. Surgical needles ( rice. 3
), designed for stitching fabrics, have an eye for fixing the thread at the end opposite to the stabbing one. They are straight or have a bend of varying degrees. Surgical needles differ in length and cross-sectional shape of the point - round (piercing) and trihedral (piercing-cutting), as well as in the shape of the eye - with a split or uncut eye. Sterile atraumatic needles with glued suture material - catgut, nylon, lavsan or other thread of a smaller diameter than the needle are becoming widespread. Injection and puncture-biopsy needles are made of chromium-nickel stainless steel, heads are made of brass, disposable needle heads are made of polypropylene; surgical needles are made from tool carbon steel. Reusable needles must be thoroughly sterilized (see Sterilization) .
Until commissioning, they are stored in moisture-proof packages, covered with a thin layer of special oil. Before use, they are cleaned of oil coating and sterilized with water vapor or in dry ovens; gas is also acceptable, in exceptional cases - by boiling. After use, the needles are thoroughly washed, the lumen of the injection needles is cleaned with a mandrin, dried, and then subjected to sterilization. Atraumatic needles are factory sterilized with ionizing radiation and used once. Rice. 3. Needles for stitching: a - surgical needles (1 - straight, 2 - with a curved end, 3 - curved by 2/8 of the circle, 4 - curved by 3/8 of the circle, 5 - curved by 4/8 of the circle, 6 - curved on 5 / 8 circles, 7 - with a split eye, 8 - with a continuous eye, 9 - a common triangular needle with a split eye); b - atraumatic needles (1 - single needle, 2 - double needle); needle cross-sections: 3 - round, 4 - trihedral, 5 - flattened. Rice. 1. Needles for injections, infusions, transfusions: a - injection needle (1 - needle tube, 2 - needle head, 3 - mandrin, 4 - dagger sharpening, 5 - spear sharpening, β - needle cut angle); b - a needle with an emphasis for intradermal injections; in - a needle with a safety bead; g - needle with side holes for air release; e - attachment to the injection needle for connection to blood transfusion systems, etc.; e - transitional cannula for injection needles; g - Dufo needle for blood transfusion; h - a needle for taking blood.
1. Small medical encyclopedia. - M.: Medical Encyclopedia. 1991-96 2. First health care. - M.: Great Russian Encyclopedia. 1994 3. Encyclopedic Dictionary medical terms. - M.: Soviet Encyclopedia. - 1982-1984.
- Wednesday needle
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11.040.30 - Surgical instruments and materials GOST 4.307 85 SPKP. Single-edged tools. Nomenclature of indicators (in terms of scalpels and knives replaced by GOST 21240 89) GOST 4.310 85 SPKP. Needle holders. Nomenclature of indicators GOST 4.485 87 SPKP. ... ... Indicator of national standards
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MEDICAL TOOLS- MEDICAL TOOLS. In structure M. and. includes all kinds of devices used in medical practice. From the point of view of production, the following groups are distinguished: 1) metal chir. tools, including syringes; 2) surgical and ... ... Big Medical Encyclopedia
Faced with different marking systems for injection needles - millimeters or the G system - I constantly forget how exactly they correlate. This cheat sheet in order not to search.
The fact is that, unlike Russia, where length and diameter of injection needles are measured in millimeters x, abroad, "inches" (inches) are accepted for length, and the "Gauge" system (caliber, letter "G") to indicate the diameter of the needle. The value of G (needle gauge) will be the greater, the smaller the diameter of the needle.
Since almost all needles and cannulas, offered on the market for cosmetologists, imported, each time you have to recalculate "how much is it in millimeters." In order not to do this, I will save myself a cheat sheet, which I advise you. Bold, I singled out those that are used most often in cosmetology.
| Calibration code Gauge (G) |
Rated external needle diameter (in millimeters) |
| 33 | 0.20 |
| 32 | 0.23 |
| 31 | 0.25 |
| 30 | 0.30 |
| 29 | 0.33 |
| 28 | 0.36 |
| 27 | 0.40 |
| 26 | 0.45 |
| 25 | 0.50 |
| 24 | 0.55 |
| 23 | 0.60 |
| 22 | 0.70 |
| 21 | 0.80 |
| 20 | 0.90 |
| 19 | 1.10 |
| 18 | 1.25 |
| 17 | 1.50 |
| 16 | 1.65 |
| 15 | 1.80 |
| 14 | 2.10 |
| 13 | 2.45 |
The outer diameter of the needle does not always correspond to the scheme “the larger the outer diameter, the larger the inner diameter”, since the nuances still matter. This is especially true for cannulas. The fact is that the inner diameter is due to the fact that the wall of the cannula can be:
- normal
- thin
- ultra-thin (ultra-thin).
Returning to the needles, I met another interesting table color marking needles. This is convenient for ease of selecting/changing needles during the selection of a mesotherapy session. I can say that the needles that I have correspond to it.
Not subject to this standard mesotherapy needles, whose outer diameter can be less than 0.30mm and is 0.20mm, 0.23mm, 0.25mm. However, mesoneedles, whose thickness could be determined by a common color table, such as 27G and 30G, have special colors.
In particular, "Mesoram" (Mesoram) have the following color coding:
Which needle to choose
There are no "best options" because the best option- this is what suitable for the intended purpose in this particular case.
It is clear that the size and diameter of the needle depend primarily on:
- injection targets: skin (different levels), subcutaneous tissue, muscles, veins, nerve block, intra-articular injection, puncture, etc.
- viscosity and density of the administered drug,
- injection techniques (for example, the nappage mesotherapy injection technique can be performed for at least 4 different ways- depends on the choice of length and diameter of the needle).
Taking blood into a test tube using a butterfly needle
Accordingly, the same rule applies to cannulas and specialized needles (for example, "butterflies" that I use for plasma lifting).
- The deeper/further you need to penetrate, the longer the needle/cannula should be. This, of course, also applies to the "single-prick" techniques for fillers.
- The denser the preparation, the wider the diameter should be.
- At the same time, it should be remembered that the thicker the needle, the more pain the patient has.
However, even if patient comfort is not taken into account, choosing a thicker needle is not always a universal solution, for the reason that, if we talk about mesotherapy or trichology, the liquid preparation will leak between injections. As well as a denser one, you will not physically push through a thin needle.
For reference:
Surface, sharpening, needle cut
I won't even dwell on it. There are so many details that no cheat sheet will cover them. From a practical aspect, it is important for the patient that how fast does the needle get blunt. If this is not important for an intramuscular (single) injection, since both the syringe and needles are disposable, then for a mesotherapeutic session, when the number of injections of one syringe can reach tens and hundreds, this is very important.
If you are a practicing cosmetologist, then you know perfectly well how many needles you have to change when treating the area of the face or scalp, depending on the brand (and price, of course) of the needles.
Parenterally(bypassing the digestive tract) drugs are administered by injection.
There are two brands of injection syringes: "Record" and "Luer" (single and reusable, Fig. 9.20, a). The device of the syringe and the differences between the two brands are shown in Figure 9.20, b.
The capacity of injection syringes is 1, 2, 5, 10 and 20 ml.
To draw the correct dose into the syringe medicinal product, you need to know the "price" of the division of the syringe, i.e. how much solution can be between the next two divisions of the cylinder (divisions and numbers indicate the capacity of the syringe in milliliters and fractions of a milliliter). In order to determine the “price” of division, one should find on the syringe barrel the number closest to the needle cone (number of milliliters) and divide by the number of divisions on the cylinder (between this number and the needle cone). This will be the “price” of dividing the syringe (Fig. 9.20, c).
The most common dose of drugs for parenteral administration expressed in milliliters and fractions of a milliliter. There are other dose conventions. For example, patients suffering from diabetes, administered insulin, administered in units of action (ED). Therefore, for the administration of insulin, special syringes are produced, on the cylinder of which not fractions of a milliliter, but “action units” are indicated (Fig. 9.20, d). At home, as well as for the convenience of their constant transportation, for example, in a bag, pocket, there are syringes for administering insulin that resemble a pen in appearance.
Needles for syringes "Record" and "Luer" differ in the shape of the cannula (Fig. 9.21, a). In addition, needles for intradermal, intramuscular, subcutaneous, intravenous injections differ significantly in length, cross section and sharpening shape (Fig. 9.21, b, c). The domestic industry produces injection needles for reusable use. different sizes: 0415, 0420, 0520, 0840, 1060. The first two digits indicate the diameter of the inner lumen of the needle in millimeters, increased by 10 times; the next two digits are the length of the needle in millimeters.
Rice. 9.20. Syringes "Record" and "Luer" (a); Rice. 9.21. Injection needles:
reusable syringe device (b): 1- qi-a: for the Record syringe (1), for the syringe
lindr, 2 - under-needle cone, 3-piston, 4- "Luer" (2); b: intramuscular needles(1),
piston lock, 5 - piston handle; price of intravenous (2), subcutaneous (3) injections;
dividing syringes of various capacities (c, d) c: needles for various injections
Needles must be used strictly for their intended purpose. So, for example, for intramuscular injection into the upper outer quadrant of the buttock, a needle 40 mm long and 60 mm long and 0.8-1.0 mm in cross section is used, for intravenous injection - 40 mm long and 0.8 mm in cross section, for subcutaneous injection - 20 mm long and 0.8 mm in cross section. 0.4-0.6 mm, for intradermal - 15 mm long and 0.4 mm in cross section.
Along with a disposable syringe, an injection needle is often packaged. When choosing such a syringe for injection, you should make sure that the needle lying there is intended for this injection.
Syringe assembly.
Syringe Assembly Technique reusable depends on the type of packaging in which it was sterilized.
Assembly of a syringe packed in a bag:
1. Wash your hands.
2. Check the date of sterilization indicated on the package and its tightness.
3. Open (tear) the package and use its inner (sterile) surface when assembling the syringe.
4. Take the piston by the handle and insert it into the cylinder.
5. Take a dialing needle medicinal product behind the cannula (this needle is usually larger than the injection needle) and put it on the under-needle cone without touching the tip of the needle. You can use the same needle for both collection and injection.
6. Fix the cannula of the needle with your fingers, rubbing it against the needle cone.
7. Check the patency of the needle by releasing air from the syringe.
8. Place the assembled syringe on the inside of the bag.
Syringe single use is produced in assembled form (Fig. 9.22). To prepare the syringe for injection, open the package from the side where
If syringes are sterilized in open container(with decentralized sterilization), then after sterilization they are laid out on a sterile table, standing in treatment room.
The surface of this table is washed daily in the morning using disinfectants. Putting on sterile gloves, the table is covered with a sterile sheet, having previously folded it in four layers: it should hang from all sides of the table by 15–20 cm. The lower part of the sheet (two layers) covers the table, top part(two layers) will cover syringes, needles, trays laid out on the table from the sterilizer: syringes of different capacities should lie separately, needles in the container in which they were sterilized, trays upside down, stacked.
Rice. 9.22. Opening the package with disposable Fig. 9.23. Sterile and working tables
To prevent the sheet from slipping on the table, it is fixed on 4 sides with linen claws. The toes are also fixed to the corners of that part of the sheet that covers the tools and hangs down (Fig. 9.23).
The sheet should be changed every 6 hours. The shelf life of instruments on the table is 6 hours. If they are not used during this time, they are subject to sterilization again.
It should be noted that this method of storing sterile instruments in the treatment room does not provide the necessary infection safety.
Next to the sterile should be the so-called "desktop", on which:
Tweezers in a sterile package (the package can stand in a high capacity) or in a 1% aqueous solution of chlorhexidine bigluconate;
Bix or packages with sterile balls (it is better to use Damisept wipes);
Scissors, nail files for opening ampoules, non-sterile tweezers.
Assembly of the syringe from the sterile table (Fig. 9.24).
1. Wash your hands.
2. Open the sterile table by the laundry hooks that are attached to the free ends of the sterile drape.
3. With sterile tweezers (taken out of an aqueous solution of chlorhexidine or from a bag), take one kidney-shaped tray from a sterile table and put it down on the palm of your hand.
4. With the same tweezers, put a piston, a cylinder and 2 needles into the tray (for a set of solution and for injection). Arrange them in the tray as shown in Figure 9.24, c.
5. Put the tray with the syringe on the desktop, and put the tweezers in a container with a solution of chlorhexidine (package).
6. Close the sterile table (by the pins).
7. With tweezers, again taken from the chlorhexidine solution or from the bag, take the cylinder, “intercept” it with the other hand (Fig. 9.24, d).
8. Take the piston with tweezers and insert it into the cylinder (Fig. 9.24, e). Attach the removable cover.
9. Put the needle for the drug kit on the needle cone, taking it with tweezers by the cannula (you can immediately put on the injection needle).
10. Fix the needle on the needle cone.
11. Put the tweezers in a container with aqueous solution chlorhexidine (or a bag), and put the syringe with the needle in the tray (Fig. 9.24, g).
