The gauge selection is made on the thickness of the medicine that needs to be injected in the body. If the medication is thick, a needle with small gauge and big diameter would be the preferred needle. The medication for intramuscular purposes is given with long needles while the shorter ones are used for subcutaneous medications. These are the most widely type of needles. With a cylindrical hollow in them, they are used with the syringe to inject substances into the body or extract fluids from it.
Commonly used for taking the liquid samples, they are trusted to be very quick. These are one of the most important role-players in research and development since they significantly reduce the possible contamination in condition of inoculation of a sterile substrate. These are a crucial link between the patient and the dialysis machine. This is why they need to meet the maximum requirements of utmost quality, safety and comfort from both sides the user and the patient.
A secure needle-lock ensured that the increased pressure required to inject the viscous oil did not detach the needle. Figure 5. Figure 6. The needles pictured below represent the range of needles and packaging which were commonplace between and They often became blunt with multiple use, were impossible to clean and sterilise adequately and caused infections leading to cellulitis and abscesses. Sharpening needles was sometimes solved by including a suitably shaped carborundum stone in the injection set.
Needle sharpening devices were needed for rapid and consistent sharpening of many needles by large institutions Figures 7. Figure 7. Figure 8. The Mussel Shell Figure 9.
It was not until later that pharmaceutical manufacturers prepared sterile injections in sealed glass ampoules. Probably the oldest syringe in the collection c has a small metal barrel with a plain glass tube to contain a medication.
It is crude and has a waxed linen piston with thumb-hold on the plunger. The needle has a screw fitting like another of the older syringes in the collection with its ferrous metal ends and non-sterilisable, ivory thumb piece on a plunger with a rubber piston. Figure Figure 9. There were a variety in syringes made from all glass to all metal, but the Rekordspritze introduced by the Berlin instrument makers Dewitt and Hertz in gained prominence through its dependability, lack of leakage and jamming, and ease of dismantling to enable sterilisation.
This pattern persisted until plastic superseded it. It was manufactured by many companies with minor modification all over the world. All glass syringes retained some popularity but were more susceptible to jamming and leaking Figure Cartridge syringes were popular with dentists, and for emergency kits Figure The collection contains several special purpose syringes and syringe sets. The anaesthetic syringe set was in common use by GPs and specialists.
One that took us a while to identify is shown in Figure The copper cased cannulas and the thick metal syringe with a robust screw lock retain heat to enable the injection of melted paraffin wax into hollow organs and vessels for demonstration specimens for morbid anatomy classes.
Whichever measurement is used, 1 cc is equal to 1 mL. If you are injecting your medication at home , you need to select a syringe that will hold the dose you've been prescribed.
For example, if you're supposed to give yourself 3 cc of a drug, you would want to use a syringe that holds exactly 3 cc or just a little more. If you use a syringe that can only hold 2 cc, you would have to inject yourself more than once. That's extra pain for no good reason. On the other hand, if you use a syringe that holds 15 cc, it will be harder to see the cc markings. You could easily end up giving yourself too little or too much medication.
Needles are labeled differently than syringes. The packaging will have a number, then a "G," and then another number. If you need to inject yourself with a small amount of medication, it will usually be less painful to use a thin, high-gauge needle, not a wider, lower-gauge needle.
For larger amounts of medicine, a wider needle with a lower gauge is often a better choice. While it might hurt more, a wide, low-gauge needle will deliver the drug faster than a thin, high-gauge needle. As far as the needle length, the best choice will depend on a person's size a small child would need a shorter needle than an adult. Where you're inserting the needle also matters. Some medications can be absorbed just under the skin. Others need to be injected into the muscle.
Subcutaneous injections go into the fatty tissue just below the skin. These shots are fairly shallow. The needle required is small and short—typically one-half to five-eighths of an inch long with a gauge of 25 to Intramuscular injections go directly into a muscle. Muscle is deeper than skin, so the needle used for these shots must be thicker and longer.
Needles with a gauge of 20 or 22 G and a length of 1 or 1. You must also think about how much body fat the needle has to go through. A thin person might be able to use an inch-long needle. Someone heavier might need a needle that is an inch-and-a-half-long.
If you have to give injections to yourself or someone else at home, understanding needle and syringe sizes can make that job a little easier. Syringes can hold liquids or solids. You'll see milliliters mL marked on the tube for measuring liquids.
You'll see cubic centimeters cc for measuring solids. Try to choose a syringe that holds the exact dose you need. Needles are measured a different way. The first number on a needle label is its gauge. That's how thick the needle is. Higher numbers mean thinner needles. The second number on the label is how long the needle is.
0コメント