Method and apparatus for penetrating tissue

  • US 8,007,446 B2
  • Filed: 10/19/2006
  • Issued: 08/30/2011
  • 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 controllable electromagnetic based penetrating member driver;

    a disposable positionable in a housing of the body fluid sampling system;

    a plurality of penetrating members, each of a penetrating member and an associated sample chamber having a combined occupied volume of no more than about 5.0 cm3, the plurality of penetrating members and associated sample chambers being positioned in the disposable;

    a transport mechanism configured to engage the disposable to carry the plurality of penetrating members on top of a belt, and move the plurality of penetrating members in its entirety position to provide that one of the penetrating members is coupled to the controllable electromagnetic driver for launch of the penetrating member; and

    a human interface at the housing of the body fluid sampling system and providing at least one output selected from at least one of, number of penetrating members available, number of penetrating members used, actual depth of penetrating member penetration in a tissue site, stratum corneum thickness in the case where the tissue site is the skin and an area below the skin, force delivered on tissue site, energy used by driver to drive penetrating member into tissue site, dwell time of penetrating member, battery status of body fluid sampling system, status of body fluid sampling system, amount of energy consumed by body fluid sampling system, speed profile of a penetrating member, information relative to contact of penetrating member with tissue site before penetration by penetrating member and information relative to a change of speed of penetrating member as in travels in tissue site.

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