Method and apparatus for body fluid sampling with hybrid actuation

  • US 8,267,870 B2
  • Filed: 05/30/2003
  • Issued: 09/18/2012
  • Est. Priority Date: 04/19/2002
  • Status: Expired due to Fees
First Claim
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1. A body fluid sampling device using a penetrating member to extract fluid from an anatomical feature, said device comprising:

  • a plurality of penetrating members;

    a penetrating member driver for moving each of the plurality of penetrating members inbound towards the anatomical feature;

    a single sterility barrier that disposes over the plurality of penetrating members and is configured to maintain the plurality of penetrating members each in a sterile environment prior to launch of one of the plurality of penetrating members to the anatomical feature, the sterility barrier being in a non-contact relationship relative to a tip of each of the plurality of penetrating members;

    a mechanical sterility barrier removal device configured to breach the sterility barrier and to open the sterile environment to provide that each of the plurality of penetrating members does not pierce any materials when a penetrating member is actuated toward a tissue site;

    a user interface coupled to a processor with the processor being coupled to the penetrating member driver, wherein the processor is configured to provide the user interface with an option selected from at least one of, depth of a penetrating member penetration, velocity of a penetrating member, a desired velocity profile, a velocity of a penetrating member into the tissue site, velocity of the penetrating member out of the tissue site, dwell time of the penetrating member in the tissue site, and a target tissue profile,wherein said penetrating member driver in communication with the processor is configured to advance said penetrating member at an advancement velocity greater into the tissue site of the anatomical feature than a retraction velocity out of the tissue site of the anatomical feature with a dwell time sufficient to allow for a spontaneous flow of blood from the tissue site.

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