Method and apparatus for penetrating tissue

  • US 8,579,831 B2
  • Filed: 10/06/2006
  • Issued: 11/12/2013
  • Est. Priority Date: 04/19/2002
  • Status: Active Grant
First Claim
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1. A body fluid sampling system for use on a tissue site, the system comprising:

  • a drive force generator;

    a penetrating member operatively coupled to said force generator, said force generator moving said member along a path out of a housing having a penetrating member exit, into said tissue site, stopping in said tissue site, and withdrawing out of said tissue site in a lancing cycle to provide for a flow of blood into a sample chamber of the system;

    said drive force generator configured to be controlled to follow a predetermined velocity trajectory into the tissue and out of said tissue;

    a tissue stabilizing member associated with the device and at least partially surrounding an impact location of the penetrating member on said tissue site;

    a processor configured to construct a database for a user, the processor using the database to calculate user profile traits depending on user input information to customize a user profile for subsequent lancing cycles;

    wherein the user profile traits include a degree of painlessness, success rate, and blood volume; and

    a human interface specific for use by humans and having at least one output, wherein the human interface is coupled to the processor and relays to the drive force generator at least one lancing penetration parameter selected from at least one of, penetrating member depth of penetration, velocity, braking, or retraction of the penetrating member, the processor having resources to deliver one or more signals to the drive force generator to initiate movement of a penetrating member, achieve acceleration of the penetrating member, keep track of a velocity of the penetrating member, determine if a distal tip of the penetrating member has made contact at the tissue site, and when to brake and retract the penetrating member.

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