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Improved head pressing disposable blood collection device

A disposable blood collection device technology, which is applied in the field of safety blood collection devices, can solve problems such as bad pressing feeling, increased pressure at the blood collection site, and inconvenience

Active Publication Date: 2017-11-21
STERILANCE MEDICAL SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only brings inconvenience to the operator, but also makes the pressure of the blood collection site significantly increased, causing psychological burden before the puncture pain

Method used

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  • Improved head pressing disposable blood collection device
  • Improved head pressing disposable blood collection device
  • Improved head pressing disposable blood collection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1: Twist cap type head push type disposable blood collection device

[0045] see Figure 5-Figure 10 As shown, the disposable blood collection device is composed of a housing 1, a tail cap 2, a needle core 3, a spring 4, a pusher 5 and a twist cap 6 (see Figure 5 and Figure 6 ).

[0046] In assembled state (see Figure 9 ), the tail cover 2 covers the tail port of the housing 1, and the tail cover 2 protrudes from the housing 1 with two elastic claws 7 arranged face to face and symmetrically, and these two elastic claws 7 jointly form an elastic clip. The needle core 3 is clamped in the elastic clip, the spring 4 presses the tail of the needle core 3 and acts on the ejection direction of the needle core 3, and the elastic clip uses the hook 9 at the end and the clamping force to clamp the needle core 3 Clip to form lock before firing. The head of the pusher 5 protrudes from the front end of the shell 1, and the body of the pusher 5 is slidably connecte...

Embodiment 2

[0049] Embodiment 2: Cap type head push type disposable blood collection device

[0050] see Figure 11-Figure 13 As shown, the disposable blood collection device is made up of a shell 1, a tail cap 2, a needle core 3, a spring 4, a pusher 5 and a cap 15 (see Figure 11 and Figure 12 ). Assembly structure see Figure 13 shown.

[0051] The difference between this embodiment and Embodiment 1 lies in that the structure of the protective cap is different. What embodiment 1 draws blood is twist cap type structure, and what this embodiment adopts is cap type structure. The cap type structure means that the head of the blood collection device adopts a cap structure, that is, the cap 15 is set on the head of the blood collection device, and a detection rod protrudes from the cap 15, which can be used to detect the locking state of the needle core and protect the needle tip. Both the twist cap structure and the block cap structure are prior art.

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Abstract

An improved head-pressing disposable blood collection device, including a shell, a needle core, a spring and a pusher, and an elastic clip is arranged in the shell to clamp and lock the needle core; There is a space for giving way in the direction of opening; there are stoppers and slopes on the pusher; in the locked state before launching, the stopper occupies the space for giving way to limit the lateral opening range of the elastic clip; when pressing to launch , the pusher moves backward in the shell, driving the stopper to evacuate the space, and at the same time, the slope of the pusher forces the elastic claws to open sideways, causing the needle core to be unhooked to produce a shooting puncture. The invention controls the allowable opening range of the elastic clip by controlling the size of the lateral clearance gap, and finally can effectively control the reliability of whether the needle core is detached from the elastic clip. The mechanism reliability and the problems between use and hand feeling caused by the clamping force of the elastic clip in the ejection mechanism of the blood collection device are solved.

Description

technical field [0001] The invention relates to the field of medical blood collection instruments, in particular to a head-pressing disposable safety blood collection device (or blood collection needle) with an ejection mechanism. Background technique [0002] In the field of medical blood collection, disposable blood collection devices are popular among medical staff and patients for their small size, safe use, and convenient operation. They are currently widely used in various medical institutions and diabetic patients. This kind of blood collection device has its own ejection mechanism, compact structure, one-time use as a whole, safe and convenient, so it has strong market development potential. [0003] Chinese patent CN2619583Y once announced the authorization of a utility model patent titled "Self-Locking Disposable Safety Automatic Blood Collection Needle". This patent provides a representative traditional cap-type head-pressing disposable blood collection device. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/15
Inventor 施国平曹跃平
Owner STERILANCE MEDICAL SUZHOU
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