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Needle device for safely collecting blood or injecting drugs

  • US 5,193,552 A
  • Filed: 04/15/1991
  • Issued: 03/16/1993
  • Est. Priority Date: 03/14/1989
  • Status: Expired due to Term
First Claim
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1. A needle device for safely collecting blood or injecting drugs, said device comprisinga needle and a housing for said needle, said housing including an aperture at one end;

  • means slidably disposed within said housing for mounting said needle, said mounting means being shaped at one end to releasably mate with a container constructed to collect or deliver a liquid, said needle being capable of penetrating a mated container when sufficient force is applied,means for releasably locking said mounting means in said housing in a least two positions, one of said positions being a withdrawn position locating said needle so as to be withdrawn into and surrounded by said housing prior to use, and the other position being an extended position in which said needle extends and projects through said aperture,permanent locking means for locking said needle and said mounting means permanently against further movement in said housing when said mounting means is moved from said extended position to a third locked position beyond said withdrawn position,means defining a slot in the side of said housing, and a button mounted in said housing slot for manual engagement by an operator,means on said button for engaging said mounting means when said button is moved rearwardly towards said third locked position, said button being free of means for engaging said mounting means when said button is moved towards said extended position,whereby said needle and said mounting means can be withdrawn into said housing by moving said button rearwardly,and further including either a blood collection container or a drug-injecting container preloaded with a drug, said either container being releasably engagable with one of said needle ends within said mounting means and within said housing, said releasable locking means in said withdrawn position being effective to release said mounting means and said needle only as a result of a contact force between said needle and either of said containers that is insufficient to cause said needle to penetrate either of said containers.

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