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Combined reverse syringe with self-regulating function

A syringe and self-adjusting technology, applied in the field of medical devices, can solve the problems of repeated needle withdrawal, inconvenience, and easy bacterial infection, and achieve the effect of reducing pain and easy operation

Inactive Publication Date: 2019-04-02
SHAANXI JINGHUI MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the inconvenience caused by the syringe having only one needle seat in the prior art and needing to pull out and insert the needle many times during use, and the problem that bacterial infection is prone to occur

Method used

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  • Combined reverse syringe with self-regulating function
  • Combined reverse syringe with self-regulating function
  • Combined reverse syringe with self-regulating function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] In order to solve the problem that the existing syringe has only one needle seat, the inconvenience caused by the need to withdraw and insert the needle multiple times during use, and the problem of bacterial infection is prone to occur, the present invention provides a figure 1 The combined reverse syringe with self-adjusting function shown includes a syringe 1, a needle seat 3 provided at the top of the syringe 1, a core rod 2 is provided at the bottom of the syringe 1, and the core rod 2 is placed in the syringe 1 One end is provided with a piston 5, and the other end is placed outside the syringe 1, and is provided with a baffle 6. The self-adjusting combination reverse syringe is connected with an automatic pressure check valve 12 to control the liquid flowing into or out of the syringe. Control, ensure that no backflow phenomenon occurs, realize the circulation of the inflow and outflow, and avoid the problem of bacterial infection caused by frequent needle insertion...

Embodiment 2

[0048] Different from Embodiment 1, the automatic pressure check valve 12 of the combined reverse syringe with self-adjusting function provided in this embodiment is provided on the connecting piece 15 fixedly connected to the needle seat 3.

[0049] Such as Figure 4 As shown, the connecting member 15 includes a first liquid passage 9-1 and a first connecting sleeve 10-1 arranged on the periphery of one end of the first liquid passage 9-1. The inner wall of the first connecting sleeve 10-1 is provided with The other end of the first connecting thread 11-1 is provided with an external thread connecting port 13, and the automatic pressure check valve 12 is arranged in the middle of the liquid passage 9, between the connecting sleeve 10 and the thread connecting port 13.

[0050] The connecting thread 11 on the needle seat 3 is matedly connected with the external thread of the threaded connection port 13 on the connecting piece 15 to fix the needle seat 3 and the connecting piece 15. ...

Embodiment 3

[0053] On the basis of Example 1 or Example 2, such as figure 1 , figure 2 , image 3 As shown, the lower end of the syringe 1 is provided with an insulating film 4, one end of the insulating film 4 is connected to the bottom end of the syringe 1, and the other end is connected to the bottom end of the core rod 2. In this way, it can be ensured that the part of the core rod 2 in contact with the inside of the syringe 1 is effectively isolated from bacteria or viruses, so that the patient can push or pull out the core rod 2 many times for injection during injection, without causing bacteria or Viral infection.

[0054] Such as figure 1 As shown, the bottom surface of the baffle 6 is provided with a ring-shaped first groove 18, and the lower end of the isolation membrane 4 is fixed by a first rubber ring 7 that fits the first groove 18; A second baffle 17 is provided at the lower end, and an annular second groove 19 is provided above the second baffle 17, and the upper end of the ...

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PUM

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Abstract

The invention belongs to the technical field of medical devices, and in particular, relates to a combined reverse syringe with a self-regulating function, wherein the combined reverse syringe includesa needle cylinder, a needle seat arranged at the top of the needle cylinder, and a core rod arranged at the bottom of the needle cylinder. One end, placed in the needle cylinder, of the core rod is provided with a piston, and the other end of the core rod is placed outside the needle cylinder; a baffle plate is arranged. The syringe is connected with an automatic pressure one-way valve for controlling a liquid to flow in or out of the syringe. According to the combined reverse syringe with the self-regulating function, directional control of liquid flowing is achieved by connection with the one-way valve without backflow, the liquid flowing-in and flowing-out circulation is achieved, the problem of bacterial infection caused by frequent needle insertion and withdrawal is avoided, the paincaused on patients is reduced, and the combined reverse syringe is easy to operate.

Description

Technical field [0001] The invention belongs to the technical field of medical devices, and specifically relates to a combined reverse syringe with a self-adjusting function. Background technique [0002] Syringe is a common medical device. As early as the 15th century, Italian Catinel proposed the principle of syringe. Mainly used for injecting or pumping liquid. Syringes can also be used for medical equipment, containers, and scientific instruments such as some chromatography methods to inject through the rubber septum. Injecting gas into blood vessels will cause air embolism. The way to remove air from the syringe to avoid embolism is to turn the syringe upside down, tap it lightly, and squeeze out a little liquid before the injection into the bloodstream. [0003] The syringes currently in use in medical equipment are piston-type syringes. Liquid is fed in when the piston is drawn, and liquid is discharged when the piston is pushed. It is also equipped with a needle seat. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/178A61M5/31A61M5/36A61M1/00A61M5/14
CPCA61M1/0023A61M5/14A61M5/178A61M5/31A61M5/36A61M2005/3128A61M2205/19A61M1/67A61M1/84
Inventor 黄敬远
Owner SHAANXI JINGHUI MEDICAL TECH CO LTD