A<unk>  is a<unk>  with a built-in<unk>  mechanism to reduce the risk of needlestick injuries to healthcare workers and others. The needle on a<unk>  can be detachable or permanently attached. On some models, a sheath is placed over the needle, whereas in others the needle retracts into the barrel.<unk>  needles serve the same functions as<unk> s, but the protective mechanism is a part of the needle rather than the<unk> . Legislation requiring<unk> s or equivalents has been introduced in many nations since needlestick injuries and re-use prevention became the focus of governments and<unk>  bodies. In this model of<unk> , the needle retracts into the barrel of the<unk>  after use.
Safety syringe
Transfer board
Isolation tank
Telepharmacy
GPnotebook
Vacutainer
Biological pharmacist
Examination table