Method and apparatus for penetrating tissue
First Claim
1. A body fluid sampling system for use on a tissue site, the system comprising:
- a housing;
an electrically powered drive force generator;
a penetrating member operatively coupled to the electrically powered drive force generator, the electrically powered drive force generator moving the penetrating member along a path out of the housing having a penetrating member exit, into the tissue site, stopping in the tissue site, and withdrawing out of the tissue site following a predetermined velocity vs. position profile;
a penetrating member sensor configured to monitor depth of penetration and velocity of the penetrating member;
a processor coupled to the electrically powered drive force generator with program instructions that provide an input to the electrically powered drive force generator to control depth of penetration and velocity of the penetrating member to match the predetermined velocity vs. position profile via a feedback loop of the depth of penetration and velocity of the penetrating member from the penetrating member sensor; and
a tissue stabilizing member associated with said housing and positioned to at least partially surround an impact location of the penetrating member on the tissue site wherein the tissue stabilizer member is configured to apply a force to a target tissue and cause the target tissue to press in an inward direction relative to the housing member.
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Accused Products
Abstract
These and other objects of the present invention are achieved in a body fluid sampling system for use on a tissue site that includes a drive force generator and a penetrating member operatively coupled to the force generator. The force generator moves the member along a path out of a housing with a penetrating member exit, into the tissue site, stops in the tissue site, and withdraws out of the tissue site. The drive force generator is configured to be controlled to follow a predetermined velocity trajectory into the tissue and out of the tissue. A tissue stabilizing member is associated with the device and at least partially surrounds an impact location of the penetrating member on the tissue site.
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Citations
42 Claims
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1. A body fluid sampling system for use on a tissue site, the system comprising:
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a housing; an electrically powered drive force generator; a penetrating member operatively coupled to the electrically powered drive force generator, the electrically powered drive force generator moving the penetrating member along a path out of the housing having a penetrating member exit, into the tissue site, stopping in the tissue site, and withdrawing out of the tissue site following a predetermined velocity vs. position profile; a penetrating member sensor configured to monitor depth of penetration and velocity of the penetrating member; a processor coupled to the electrically powered drive force generator with program instructions that provide an input to the electrically powered drive force generator to control depth of penetration and velocity of the penetrating member to match the predetermined velocity vs. position profile via a feedback loop of the depth of penetration and velocity of the penetrating member from the penetrating member sensor; and a tissue stabilizing member associated with said housing and positioned to at least partially surround an impact location of the penetrating member on the tissue site wherein the tissue stabilizer member is configured to apply a force to a target tissue and cause the target tissue to press in an inward direction relative to the housing member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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42. A body fluid sampling system for use on a tissue site, the system comprising:
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an electrically powered drive force generator; a penetrating member operatively coupled to said electrically powered drive force generator, said electrically powered drive force generator moving said penetrating 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 following a predetermined velocity vs. position profile; a penetrating member sensor configured to monitor depth of penetration and velocity of the penetrating member; a processor coupled to the electrically powered drive force generator with program instructions that provide an input to the electrically powered drive force generator to control depth of penetration and velocity of the penetrating member to match the predetermined velocity vs. position profile via a feedback loop of the depth of penetration and velocity of the penetrating member from the penetrating member sensor; and a vacuum source associated with said system for creating a lower atmosphere environment to draw fluid from a wound created by said penetrating member.
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Specification