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Multifunctional retractable needle type general purpose disabling syringe having enhanced safety features and related method of operation

  • US 5,114,404 A
  • Filed: 07/24/1990
  • Issued: 05/19/1992
  • Est. Priority Date: 07/24/1990
  • Status: Expired due to Fees
First Claim
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1. A syringe of the type having a retracted needle movable within a syringe housing and therein protected and shielded prior to syringe use including, in combination:

  • a. means for maintaining said needle in a completely retracted position within said housing prior to use, andb. plunger means mechanically coupled between one end of said syringe where it is exposed to pressing by a finger or thumb at one end of said needle for driving said needle to an extended and exposed position when said syringe is ready for use, whereby said syringe may be operated with one hand of a user.

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