Syringe Vacuum Blood Collector with Needle Tip Protection

Abstract

A syringe type vacuum blood collector with a protective needle tip comprises a vascular puncture needle tube (11), a blood collection needle tube (12), a blood sample collection pipe (2), and a syringe (3). A tail end of the vascular puncture needle tube (11) is eccentrically inserted on a puncture needle seat (13) in a manner of closing an outer circumferential surface of the syringe (3). The syringe has a seal cavity (32) and a cylindrical cavity (33) inside. The vascular puncture needle tube (11) communicates with the seal cavity (32), a front end of the blood collection needle tube (12) is fixedly arranged onto a wall of the seal cavity and communicates with the seal cavity (32), and a rear end of the blood collection needle tube (12) and most of the syringe extend backwards and are inserted in a pipe plug of the blood sample collection pipe (2). A tube plug of the vascular puncture needle tube (11), the seal cavity (32), a pipe core of the blood collection needle tube (12), and a pipe cavity of the blood sample collection pipe (2) whose seal cavity is punctured form a blood channel. A sliding groove (36) with a tail end where a back barrier is arranged extends in an axial direction on the side wall of the syringe (3), and a push handle (132) of a puncture needle seat protrudes from the sliding groove (36) and is exposed outside the syringe (3). The puncture needle tube (11), the puncture needle seat (13), the blood collection needle tube (12), and the collection pipe (2) form a sliding member sliding back relative to the syringe (3). With the regression of the sliding member, the puncture needle tube (11) is retracted into an inner cavity of the syringe (3), thereby ensuring that a person is not hurt.

Description

technical field

[0001] The invention relates to a human body vacuum blood collection device in clinical medicine, in particular to a syringe type vacuum blood collection device with needle point protection. Background technique

[0002] A kind of vacuum blood collection tube device in the prior art such as figure 1 , figure 2 As shown, it includes a blood collection needle and a blood sample collection tube 2. One end of the blood collection needle is a blood vessel puncture needle tube 11, and the other end is a blood collection needle tube 12 with a rubber sleeve, and the middle is connected by a PVC catheter. When the device collects blood, the upper protective sleeves of the needle tubes at both ends are pulled out first, and the blood vessel puncture needle tube 11 is inserted into the vein of the patient's arm. In order to prevent the puncture needle tube from falling off; because the blood sample collection tube 2 seal rubber plug is very thick, the bevel angle of ...

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