The push rod improved structure of retractable syringe

The push rod improved structure of retractable syringe

  • CN 206,508,347 U
  • Filed: 09/30/2016
  • Issued: 09/22/2017
  • Est. Priority Date: 09/30/2016
  • Status: Active Grant
First Claim
Patent Images

1. injection needle after resilience can be accommodated by being provided with a kind of push rod improved structure of retractable syringe, including push rod, push rodThe hollow endoporus of component, sets a block being made up of elastomer in the upper shed of endoporus, it is characterised in that:

  • The block is by upperThe connecting portion in portion and the sticking department of bottom are constituted, and are interference fitted above the connecting portion and sticking department with the upper shed of push rod endoporus,The top of connecting portion, which is provided centrally with one, can extend into the connection bump of needle assembly bottom endoporus and tight fit connection;

    It is describedIt is extend into below sticking department in push rod endoporus, the external diameter of whole sticking department is gradually reduced from top to bottom, while bottom hole in syringeThe aperture in portion is also gradually reduced, and minimum-value aperture of the minimum outer diameter more than syringe endoporus bottom of sticking department.

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