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Rubber injection piece of transfusion apparatus

A technology for rubber injection and infusion sets, which is applied in the field of medical equipment and can solve problems such as small extrusion levels

Inactive Publication Date: 2007-12-26
SHANGHAI KANGDELAI ENTERPRISE DEV GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the relatively small wall thickness (about 1 mm) of the above-mentioned injection parts, the degree of extrusion is small, which can only satisfy the need for an injection needle with an outer diameter of 0.6 mm to puncture the infusion set under a pressure of 20 kPa higher than atmospheric pressure. Injection parts, there is no leakage in the puncture area, but it cannot meet the pressure of 50kPa higher than atmospheric pressure in the infusion set, and the injection part is punctured with an injection needle with an outer diameter of 0.8mm, and there must be no leakage in the puncture area. The higher pressure level of leakage, so how to improve the pressure level of injection parts has not been a good way to deal with it

Method used

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  • Rubber injection piece of transfusion apparatus
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Embodiment Construction

[0015] Please refer to Fig. 1, the rubber injection part of the infusion set of the present invention is a rubber pipeline 1, made of medical rubber, with a total length of about 50 mm, and the outer peripheral surface of the rubber pipeline 1 is provided with an integrally formed upward protruding protrusion 2. The length of the protrusion 2 accounts for 1 / 3 to 1 / 2 of the entire length of the pipeline. The cross section of the protrusion 2 is arc-shaped, of course, it can also be in the shape of a mound or a half gourd. The protrusion 2 can be The ring-shaped protrusion arranged around the outer peripheral surface of the pipeline can also be arranged around 1 / 3~1 / 2 of the outer peripheral surface of the pipeline, which is used as a puncture area and is convenient for bending and pinching. The protrusion 2 can be set in the center of the rubber pipeline 1, It can also be arranged on the upper half of the rubber pipeline 1. When the protrusion 2 is arranged in the center of the ...

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Abstract

The present invention discloses a disposable transfusion system rubber injection component. It is a rubber tube which is used for adding fluid from exterior and is positioned after the tube of transfusion with injection needle. It is characterized by that on the peripheral surface of said rubber tube an upwards-projected projection is set, the inner diameter of said tube correspondent to said projection is equal to the inner diameter of other tube. Said invention can obviously raise the pressure of injection components.

Description

technical field [0001] The invention relates to a medical device, in particular to a disposable rubber injection part of an infusion set. Background technique [0002] Clinically, the infusion sets used for patients sometimes need to add medicine during the infusion process, so infusion sets or blood transfusion sets have permanent injection parts for dosing. At present, self-sealing injection parts are generally used, and the injection parts are made of medical rubber. Made into a sleeve shape with uniform wall thickness, as a part of the infusion set hose, when the injection needle penetrates the rubber tube wall of the injection part, the injection pressure makes the rubber tube wall open and the liquid medicine enters the infusion set, pull it out After the needle is injected, the injection port is automatically closed by the elasticity of the rubber and its own tension. Due to the relatively small wall thickness (about 1 mm) of the above-mentioned injection parts, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/14A61M5/00A61M1/02
Inventor 张宪淼邬杨
Owner SHANGHAI KANGDELAI ENTERPRISE DEV GRP CO LTD