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Syringe-barrel-embedded type rubber piston

A rubber piston, embedded technology, applied in the direction of hypodermic injection equipment, etc., can solve the problems of push rod detachment, insufficient sealing of piston, etc., to achieve the effect of increasing sealing, improving efficacy and solving derailment

Inactive Publication Date: 2014-02-19
CHANGZHOU XINER SPEED REDUCER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortage of existing pistons with insufficient sealing and easy deta

Method used

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  • Syringe-barrel-embedded type rubber piston

Examples

Experimental program
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Embodiment Construction

[0010] like figure 1 It is a schematic diagram of the structure of the rubber piston embedded in the ejector barrel. The rubber piston is embedded in the ejector barrel, including the piston body 1, the cavity 2 and the injection barrel 3. The cavity 2 is provided in the piston body 1, and the piston body 1 is placed in the injection barrel. 3, the inner wall of the injection barrel 3 is provided with a sliding groove 4, the side of the piston main body 1 is provided with a sliding block 5, the sliding block 5 is placed in the sliding groove 4, and the opening of the sliding groove 4 is provided with a rubber sealing layer.

[0011] When in use, the sliding block 5 on the side of the piston main body 1 is embedded in the sliding groove 4, and then the piston main body 1 can move downward along the sliding groove 4 on the inner wall of the injection cylinder 3 under the action of the push rod, thereby It completely prevents the piston main body 1 from derailing, and the sealing...

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Abstract

The invention relates to pistons, in particular to a syringe-barrel-embedded type rubber piston. The piston comprises a piston body, a cavity and a syringe barrel body. The cavity is formed in the piston body which is disposed in the syringe barrel body, a sliding groove is formed in the inner wall of the syringe barrel body, a sliding block is arranged on the lateral side of the piston body and disposed in the sliding groove, and a rubber sealing layer is arranged at an opening of the sliding groove. By the arrangement, sealability of the piston is increased, and the problem of separation of the piston and a push bar is structurally solved, so that cost is saved and efficacy is improved.

Description

technical field [0001] The invention relates to a piston, in particular to a rubber piston embedded in a push tube. Background technique [0002] As an indispensable injection tool in medical equipment, the existing rubber piston is directly pushed into the injection barrel without any connection, so that the sealing of the piston is not good enough, and it is easy to separate from the injection push rod, making the injection Unable to proceed normally. Contents of the invention [0003] In order to overcome the shortcomings of the existing piston, which is insufficient in tightness and easy to be separated from the push rod, the invention provides a rubber piston embedded in a push tube. [0004] The technical solution adopted by the present invention to solve the technical problem is: the rubber piston embedded in the push tube includes the piston main body, the cavity and the injection tube, the piston main body is provided with a cavity, the piston main body is placed...

Claims

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Application Information

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IPC IPC(8): A61M5/315
Inventor 王志明
Owner CHANGZHOU XINER SPEED REDUCER