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Head pressing type disposable safety hemostix capable of preventing secondary puncture

A blood collection device, a disposable technology, applied in the direction of sensors, medical science, diagnostic recording/measurement, etc., can solve the problems of complex secondary puncture structure and high process requirements

Pending Publication Date: 2022-03-01
STERILANCE MEDICAL SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the deficiencies in the prior art above, the present invention provides a head-pressing disposable safety blood collection device that prevents secondary punctures.

Method used

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  • Head pressing type disposable safety hemostix capable of preventing secondary puncture
  • Head pressing type disposable safety hemostix capable of preventing secondary puncture
  • Head pressing type disposable safety hemostix capable of preventing secondary puncture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0057] Example: A head-pressing disposable safety blood collection device that prevents secondary punctures

[0058] Such as Figure 1-15 As shown, the blood collection device includes a housing 1, a needle core 2, a pusher 3 and a launch spring 4 (see figure 1 ),in:

[0059] The front end of the needle core 2 is provided with a protective rod 26 (see Figure 5-7 ), the protection rod 26 covers the needle tip of the needle body 28 head, and the connection between the protection rod 26 and the needle core 2 is provided with a disconnection part (see Figure 5-7 ), so that when the protection rod 26 is twisted, a break occurs at the breaking part. The breaking part can be a contraction neck structure, a gap, a cut, or even a socket structure that is sleeved on the needle core 2. In this embodiment, Figure 5-7 Shown is the constricted neck.

[0060] The side portion of the needle core 2 is provided with an elastic arm 22 (see Figure 5-7 ), the elastic arm 22 is provided w...

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Abstract

A head pressing type disposable safety hemostix capable of preventing secondary puncture comprises a shell, a needle core, a pushing device and a launching spring and is characterized in that a protrusion used for locking and a first interference face used for preventing secondary puncture are arranged on an elastic arm of the needle core in parallel, and the first interference face is lower than the top face of the protrusion; corresponding to the position of the first interference surface, a second interference surface is arranged on the inner wall of the pushing device, and meanwhile a first receding groove is formed in the inner wall, in front of the second interference surface, of the pushing device; a second receding groove is formed in the position, corresponding to the protrusion, of the inner wall of the pushing device, and the second receding groove is formed in the front of the second blocking face. On the pushing device, the front half portions of the first receding groove and the second receding groove are arranged side by side, and meanwhile the second interference face and the rear half portion of the second receding groove are arranged side by side. After the needle core is emitted for the first time, the first interference surface and the second interference surface are forced to rub in the retraction process of the needle core under the driving action of the spring, so that simple harmonic vibration is quickly attenuated, and secondary puncture of the needle core is avoided.

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) that prevents secondary punctures. The blood collection device has the advantages of simple structure, good safety and reliable operation, can effectively prevent secondary puncture, has low cost as a disposable product, and has market competition potential. Background technique [0002] Among the medical blood collection devices, the disposable safety blood collection device is popular among medical staff and patients for its small size, safe use and convenient operation. It is currently widely used in various medical institutions and diabetic patients. This kind of blood collection device has its own ejection mechanism, compact structure, and one-time use as a whole, which is safe and convenient, so it has strong market development potential. [0003] At present, there are...

Claims

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Application Information

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IPC IPC(8): A61B5/151
CPCA61B5/15113A61B5/15117A61B5/15115
Inventor 施国平王祥生张金权
Owner STERILANCE MEDICAL SUZHOU
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