Embedded anti-pollution injector

An anti-pollution syringe, built-in technology, applied in the field of syringes, can solve the problems of insufficient sealing, insufficient contact between the air filter and the groove, etc., to achieve convenient suction or injection of liquid medicine, ensure sealing performance, and filter Effect of effect improvement

Inactive Publication Date: 2012-12-26
NANTONG TIANHUA HERUI TECH VENTURES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the use of the above solution, since the air filter is directly arranged on the guide cover plate, due to

Method used

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  • Embedded anti-pollution injector
  • Embedded anti-pollution injector
  • Embedded anti-pollution injector

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0017] Example 1

[0018] See figure 1 with figure 2 As shown, a built-in anti-pollution syringe of the present invention includes a syringe 1, a wing plate 1a provided at the rear end of the syringe 1, a piston 2 provided in the syringe 1, and a cylindrical pusher provided at the rear end of the piston 2. The rod 3 is a guide cover 1b provided at the rear end of the needle cylinder 1. The guide cover 1b is formed by extending the wing plate 1a inwardly. The wing plate 1a and the guide cover 1b are threadedly connected with the needle cylinder 1, and a cylindrical pusher The rod 3 extends through the guide cover 1b to the outside of the syringe 1. A groove 4 communicating with the inner cavity of the syringe 1 is provided on the guide cover 1b, and an air filter 5 is provided in the groove 4, and the air filter 5 A molecular membrane filter commonly used in the prior art can be used. This type of filter can pass air while preventing the passage of bacteria, viruses and other mac...

Example Embodiment

[0019] Example 2

[0020] See image 3 with Figure 4 As shown, the structure of a built-in anti-pollution syringe of the present invention is basically the same as that of Embodiment 1, except that at least one annular groove 4a is provided on the inner wall of the groove 4 on the side of the air filter 5 In this embodiment, the number of annular grooves 4a is two, and the number of annular grooves 4a can be increased or decreased according to specific conditions; the sealing ring 6 is arranged in the annular groove 4a. Its use effect is basically the same as that of Example 1.

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PUM

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Abstract

The invention discloses an embedded anti-pollution injector, which belongs to the technical field of injectors. Technical key points are that: the embedded anti-pollution injector comprises a needle cylinder, a wing plate, a piston, a columnar push rod and a guide cover plate, wherein the wing plate is arranged at the back end of the needle cylinder; the piston is arranged in the needle cylinder; the columnar push rod is arranged on the back end part of the piston; the guide cover plate is arranged on the back end part of the needle cylinder; the columnar push rod passes through the guide cover plate, and extends to the outer side of the needle cylinder; the guide cover plate is provided with a groove which is communicated with the inner cavity of the needle cylinder; an air filter is arranged in the groove; and a contact part between the groove and the air filter is provided with a sealing ring. The invention aims to provide an embedded anti-pollution injector, which is simple in structure, has a good filtering effect and is used for preparing liquid medicaments.

Description

technical field [0001] The present invention relates to a syringe, more specifically to a built-in anti-pollution syringe used for liquid medicine preparation. Background technique [0002] At present, the commonly used dosing syringes in hospitals are ordinary syringes, which are composed of a syringe, a piston and a push rod. During operation, medical staff push and pull the piston to move through the push rod to realize operations such as suctioning and mixing the medicinal liquid. However, in actual use, it has been found that when medical staff perform operations such as suctioning and mixing medicinal liquid, their fingers will touch the push rod, and there is a possibility of cross-infection by bringing harmful substances such as bacteria into the medicinal liquid. In order to avoid the contamination of liquid medicine when medical personnel use the syringe, someone proposed to add a protective sleeve outside the push rod to solve the above technical problems, but it ...

Claims

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Application Information

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IPC IPC(8): A61J1/20
Inventor 季历程
Owner NANTONG TIANHUA HERUI TECH VENTURES
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