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Disposable safety self-breaking injector

A disposable, syringe technology, applied in the field of medical equipment, can solve the problems of increasing the workload of medical staff and complicated operation, and achieve the effect of simple structure, convenient operation and safe use

Active Publication Date: 2009-04-22
成都普什医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcoming is that it needs manual pumping to achieve negative pressure, and the operation is complicated, which increases the workload of medical staff

Method used

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  • Disposable safety self-breaking injector
  • Disposable safety self-breaking injector
  • Disposable safety self-breaking injector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 , figure 2 , image 3 , Figure 5 , Figure 6 shown. The structure for making a disposable safe self-destructing syringe includes a hollow syringe 1, a push rod 2 that can slide in the syringe 1, a rubber stopper 3 stuck on the front end of the push rod 2, and a detachable assembly at the front end of the syringe 1. The needle holder 4 , the needle head assembled at the front end of the needle holder 4 , the sealing member A 5 , and the sealing member B 6 . There is a hole in the middle of the sealing member A 5, which is assembled at the afterbody of the syringe 1. The size of the hole is equal to the outer diameter of the push rod 2 shaft, so that the sealing member can be passed through the shaft of the push rod 2 during assembly. A 5 is assembled at the tail of the syringe 1, and after being assembled, it can be in close contact with the shaft of the push rod 2 and can make the shaft of the push rod 2 slide up and down through the sealing memb...

Embodiment 2

[0029] Such as Figure 4 , Figure 7 , Figure 8 shown. The same content as in Embodiment 1 will not be repeated, the difference is:

[0030] The size of the opening in the middle of the sealing member A 5 at the afterbody of the syringe 1 is slightly smaller than the outer diameter of the push rod 2 shaft. The outer diameter of the outer edge 13 is slightly larger than the inner diameter of the syringe 1 . The inward protrusions 7 of the push rod 2 are two symmetrical clips. The shape of the rubber plug 3 is that there are two symmetrical bayonets with the shape and size corresponding to the clips in the middle, so that the rubber plug 3 can be just stuck on the protrusions 7. , and can seal the liquid or gas at the front end of the syringe 1 from entering the push rod 2. The longitudinal cross-section of the groove 11 of the rubber stopper 3 is T-shaped, and the depth of the groove 11 is equal to the height of the needle base 4 in the syringe 1, so that the rubber stopp...

Embodiment 3

[0032] The same content as in Embodiment 1 will not be repeated, the difference is that: the inward protrusion 7 of the push rod 2 is 4 evenly distributed clips, and the shape of the rubber plug 3 is that there are 4 shapes and sizes in the middle that are similar to the clips The corresponding uniform bayonet can make the rubber stopper 3 just be stuck on the protrusion 7 . The depth of the groove 11 is greater than the height of the needle seat 4 inside the syringe 1, so that the rubber stopper 3 can be pushed inwardly towards the push rod 2 by the force of the front end of the syringe 1 during use.

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Abstract

The invention discloses a safe disposable selfdestruction injector and belongs to medical appliance field. Aim at the problem of injector failing in realizing safe selfdestruction in present technology, the inventive structure comprises hollow needle cylinder, pusher, needle stand detachably located at the front end of the needle cylinder, rubber stopper wedged at the front end of the pusher, sealing member A located at the back end of the needle cylinder, and sealing member B located at back end of the pusher. In the middle of the Sealing member B is provided with a venthole B. the front end of the pusher has an exterior margin and an inward protuberance. hollow rod close to front end of pusher is provided with venthole B connected to gas at back end of the needle cylinder and sealed by the exterior margin and sealing member A. for injection, as the gas volume in pusher rod body increase, negative pressure is formed, pinhead is resorbed into pusher by using of positive negative pressure difference fore-and-after the pusher. Compared with present technology, the invention can automatically retracts pinhead, has simple structure, convenient operation, effective avoidance of injector reuse, and good protection for medical care personnel from injury.

Description

technical field [0001] The invention belongs to the field of medical instruments, in particular to a disposable safety self-destruction injector which can automatically retract a needle. Background technique [0002] Ordinary disposable sterile syringes do not change in structure and shape after use, and are easy to be reused by people, leading to infection. According to the World Health Organization survey on the rate of reuse of syringes or needles around the world, due to poverty and lack of materials in Africa, China, India and other countries, some people recycle medical waste for recycling for a long time, resulting in the repeated abuse rate of syringes as high as 50%. , Even in developed countries such as Europe, the reuse of syringes is as high as 15%. At present, there is a serious problem of repeated use of syringes in various regions of China. However, most of the safe self-destructing syringes currently on the market have complex structures and are difficult t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/178A61M5/31A61M5/50
Inventor 王晏研
Owner 成都普什医疗科技有限公司
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