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Filter type syringe

A syringe and filter technology, which is applied in the field of filter syringes, to achieve the effect of avoiding and reducing harm to the human body

Inactive Publication Date: 2012-04-11
雷红力
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no such syringe with filtering function in clinical application in China.

Method used

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  • Filter type syringe
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Embodiment Construction

[0018] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0019] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.

[0020] figure 1 , figure 2 and image 3 A first embodiment of the filtered syringe of the present invention is shown. figure 1 is the schematic diagram of the syringe, figure 2 is a partial enlarged view of the syringe, image 3 is a schematic diagram of the structure of the filter holder of the syringe.

[0021] The filter syringe compris...

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Abstract

The invention discloses a filter type syringe which relates to the field of medical syringes. The filter type syringe comprises a needle cylinder, a push rod, a piston, a filter membrane device and elastic pawls, wherein the top end in the needle cylinder is provided with the filter membrane device; the inner wall of the needle cylinder is provided with a plurality of elastic pawls for ejecting the rear edge of the filter membrane device which can move along the axial direction of the needle cylinder. In the injecting process, the piston is drawn to generate negative pressure so that the filter membrane device draws back, and liquid enters the needle cylinder from a flow guide opening. The piston stops being drawn, and the filter membrane device is returned in situ under the elastic pawls. The piston is pushed to generate positive pressure, and the liquid is exhausted by a filter membrane, thereby insoluble particles in injecting liquid are removed through filtration and the damage of the insoluble particles to human bodies is eliminated and removed.

Description

technical field [0001] The invention relates to the field of medical syringes, in particular to a filter type syringe. Background technique [0002] Traditional medical syringes are generally composed of a syringe, a push rod and a piston, which only have the function of absorbing liquid for injection, and do not have the function of filtering the liquid to be injected and removing insoluble particles in the liquid. Insoluble particles of special medicines in human blood vessels will cause red blood cells to gather on the particles, forming thrombus and causing vascular embolism and phlebitis. It can also directly cause blockage of local blood vessels, tissue hypoxia and even necrosis. Insoluble particles enter the pulmonary capillaries as foreign matter, causing allergic reactions, and macrophages in the body proliferate to surround the particles, forming intrapulmonary granulomas. The organs that are most susceptible to blockage and damage by insoluble particles include ...

Claims

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Application Information

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IPC IPC(8): A61M5/178A61M5/31
CPCA61M5/3145A61M2005/342A61M2205/7527A61M2205/7536
Inventor 雷红力
Owner 雷红力
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