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safety syringe : ウィキペディア英語版 | safety syringe
Safety syringes have a safety mechanism built into the syringe. The needle on a safety syringe can be detachable or permanently attached. On some models, a sheath is placed over the needle or the needle retracts into the barrel following injection to protect healthcare workers and others from accidental needlestick injuries. The importance of the safety syringe has increased; legislation requiring it or equivalents has been introduced in many nations since needlestick injuries and re-use prevention became the focus of governments and safety bodies. ==Types== There are many types of safety syringes available on the market. Auto Disable (AD) syringes are designed as a single use syringe, with an internal mechanism blocking the barrel once depressed so it cannot be depressed again. The other type of syringe with a re-use prevention feature is the breaking plunger syringe. An internal mechanism cracks the syringe when the plunger is fully depressed to prevent further use. These syringes are only effectively disabled with a full depression of the plunger; users can avoid activating the re-use prevention feature and re-use the syringe. The more effective safety syringes have reuse and needlestick prevention features. A sheath or hood slides over the needle after the injection is completed with a Needlestick Prevention Syringe, which also has a re-use prevention feature (either an auto disable mechanism or breaking plunger). Retractable syringes use either manual or spring-loaded retraction to withdraw the needle into the barrel of the syringe. Some brands of spring-loaded syringes can have a splatter effect, where blood and fluids are sprayed off the cannula from the force of the retraction. Manual retraction syringes are generally easier to depress because there is no resistance from a spring.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「safety syringe」の詳細全文を読む
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