| 摘要 |
A device for covering and protecting the hollow needle of a prefilled injection syringe, after the syringe has been used to inject a fluid medicament into a patient, includes a guard and a guard body. Prior to an injection, the device is installed on the prefilled injection syringe with the guard body affixed to the finger flange of the syringe. During the injection, the guard of the device retracts over the needle and into the guard body to allow the needle to be inserted into the patient. Upon withdrawal of the needle from the patient, the device passively re-covers the needle, locking the guard over the tip of the needle to prevent accidental needlesticks or inadvertent re-use of the syringe.
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