发明名称 Hypodermic syringe with needle shield
摘要 A needle shielding device attachable to a hypodermic syringe for protecting a user from contacting the tip of a needle. The device comprises a generally cylindrical needle shield slidably engaging a syringe body for protecting a user from being stuck by the needle tip of the syringe. The needle shield continuously frictionally engages and grips the syringe body as the shield is moved between a retracted position wherein the needle extends forwardly of the needle shield and a extended position wherein the needle tip is protectively enclosed by the needle shield.
申请公布号 US4997422(A) 申请公布日期 1991.03.05
申请号 US19890304324 申请日期 1989.01.31
申请人 CHOW, PETER P.;LO, JOSEPHINE N.;CHOW, LOREN A. 发明人 CHOW, PETER P.;LO, JOSEPHINE N.;CHOW, LOREN A.
分类号 A61M5/32 主分类号 A61M5/32
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