Tissue penetration device

  • US 7,841,992 B2
  • Filed: 12/22/2005
  • Issued: 11/30/2010
  • Est. Priority Date: 06/12/2001
  • Status: Active Grant
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First Claim
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1. A lancet module comprisinga lancet channel formed within a module body portion;

  • a lancet configured to be mechanically registered and coupled to a controllable force lancet driver;

    a sample chamber coupled to the lancet channel;

    wherein the lancet has a sharpened distal tip, a shaft portion and a drive head, the shaft portion being slidably disposed and free to slide within the lancet channel;

    wherein the lancet channel has a proximal end, a distal end, a series of lancet bearing guides configured to fit closely with a shaft of the lancet and confine the lancet to substantially axial movement, the lancet bearing guides includes a proximal lancet bearing guide and a distal lancet guide;

    a proximal fracturable seal positioned between a proximal lancet bearing guide and the shaft portion of the lancet that seals the sample; and

    a distal fracturable seal disposed between the lancet and the distal lancet guide to seal a distal end of the lancet channel and a sample input port.

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