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Lancet device

  • US 5,366,470 A
  • Filed: 09/13/1993
  • Issued: 11/22/1994
  • Est. Priority Date: 11/12/1991
  • Status: Expired due to Term
First Claim
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1. A lancet device, comprising:

  • a lance, including a needle of a specific length and a shaft with one or more arms;

    a spring, one end of which is fixedly attached to said shaft of said lance;

    a trigger, including a barrel with an outer surface, one or more slots and a hollow center to slidably accept said lance, an end having a specific wall thickness and an orifice, an end distal from said orifice-containing end to engage said arms of said lance to compress said spring, and one or more pins on said outer surface;

    a body, including a barrel, a hollow center to slidably accept said trigger, a base with a well wherein said lance and spring are located in a compressed armed position prior to use, one or more angled slots in said barrel for engaging said pins of said trigger, and an end distal from said base being in about the same plane as the face of said orifice-containing end of said trigger when said pins of said trigger are engaged in said slots of said body;

    means for fixedly attaching the other end of said spring to said base;

    one or more slots in said base to slidably accept said arms of said lance;

    said distal end of said trigger retaining said lance and spring in said compressed armed position in said well when said pins in said trigger are engaged in the top of said angled slots of said body; and

    said angled slots of said body guiding said pins of said trigger to rotate said trigger when said trigger is depressed so that said slots of said trigger align with said slots of said base and said arms of said lance to release said lance and spring to allow said needle to protrude through said orifice to pierce human or other animal tissue.

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