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Invention Grant
CN105381520B 安全注射器 有权

安全注射器
Abstract:
一种安全注射器(100；700；1200)，包括：管(104；704；1204)，该管在其端部处具有开口；注射器柱塞(108；708；1208)，该注射器柱塞被构造成用于在管中移动使得注射器柱塞的向内行程促使管中的物质从开口排出；和护套(112；712；1212)，该护套被构造成用于在注射器的使用之后至少部分地覆盖管的开口，其中护套连接到注射器柱塞并且被构造成用于在向内行程的一点处与注射器柱塞分离，使得护套能够独立于注射器柱塞而移动，并且护套在分离之后的进一步运动至少部分地覆盖管的开口。
Abstract(English):

A safety syringe (100; 700; 1200) comprising: a barrel (104; 704; 1204) having an opening at an end thereof; a syringe plunger (108; 708; 1208) configured to move within the barrel such that an inward stroke of the syringe plunger causes a substance within the barrel to be expelled from the opening; and a sheath (112; 712; 1212) configured to cover at least partially the opening in the barrel after use of the syringe, wherein the safety plunger is decoupled from the sheath and is configured to couple to the sheath at a first point on the inward stroke and to decouple from the syringe plunger at a second point on the inward stroke such that the sheath is moveable independently of the syringe plunger and further movement of the sheath after decoupling at least partially covers the opening in the barrel.

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