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    • 4. 发明申请
    • INTRAVENOUS CATHETER SET
    • INTRAVENOES导管套
    • US20130211325A1
    • 2013-08-15
    • US13748634
    • 2013-01-24
    • Chih-Ming WANGWei-Ting WANG
    • Chih-Ming WANGWei-Ting WANG
    • A61M5/32
    • A61M5/3221A61M5/3232A61M5/3297A61M25/0606A61M25/0631
    • The invention includes a barrel, a needle assembly, a catheter, a stopper and a vacuum generator. The needle assembly is disposed in the barrel and has a needle, a needle hub and a needle piston. The needle piston is fastened onto the needle hub. The catheter is axially connected onto the needle hub and passed through by the needle. The stopper is operably disposed at the first end of the barrel and normally stops the needle hub from moving. The vacuum generator has a plunger and a vacuum piston mounted on an end thereof. The vacuum piston is slidably received in the barrel and normally abuts against the needle piston, and the plunger protrudes from the second end of the barrel. The needle assembly will be pulled and retracted in the barrel when the plunger is pulled outward and the stopper releases the needle hub.
    • 本发明包括一个桶,一个针头组件,一个导管,一个塞子和一个真空发生器。 针组件设置在筒体中并具有针,针座和针活塞。 针活塞固定在针座上。 导管轴向连接到针座上并由针穿过。 止动器可操作地设置在枪管的第一端,并且通常停止针座移动。 真空发生器具有安装在其一端上的柱塞和真空活塞。 真空活塞可滑动地容纳在筒体中并且通常抵靠针活塞,并且柱塞从筒的第二端突出。 当柱塞被向外拉时,针组件将在筒体中被拉和缩回,并且止动件释放针毂。