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Automatically retractable needle safety syringe

  • US 6,413,236 B1
  • Filed: 06/20/2000
  • Issued: 07/02/2002
  • Est. Priority Date: 10/08/1999
  • Status: Expired due to Term
First Claim
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1. An automatically retractable needle safety syringe apparatus, comprising:

  • a syringe body having seal means on an end thereof;

    a needle body having attachment means for temporarily attaching said needle body to said syringe body; and

    a plunger having seal means and punch means, said seal means of said plunger and said seal means of said syringe body together creating a vacuum within said syringe body, said punch means of said plunger for engaging and withdrawing said needle body within said syringe body.

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