Method and apparatus for penetrating tissue
First Claim
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1. A system for withdrawing body fluid from a body part via a withdrawal site located on the surface of the body part, the system comprising:
- a housing member;
a plurality of penetrating members positioned in the housing member;
a plurality of sample chambers, each of a sample chamber associated with a penetrating member, each of a sample chamber including at least one non-optical analyte detecting member coupled to a sample chamber;
an electronic penetrating member driver coupled to and for driving each of the plurality of penetrating members;
a penetrating member transport device for moving each of the plurality of penetrating members into a position for alignment with the penetrating member driver; and
a processor configured to control the penetrating member driver and the penetrating member transport device to drive the plurality of penetrating members and determine that a penetrating member has contacted a skin surface prior to a lancing event and in response the processor adjusting a speed of the penetrating member or the power delivered to the penetrating member for skin penetration to maintain a desired penetration velocity of the penetrating member, the processor determining whether a distal end of the penetrating member has reached a brake depth to achieve a desired final penetration depth of the penetrating member, wherein the processor uses a determination of skin contact by the penetrating member as a consideration of skin tenting by the penetrating member, wherein skin tenting is used as a consideration factor for brake depth, wherein the processor determines whether a distal end of the penetrating member has reached a brake depth based on an amount of said skin tenting, wherein the brake depth is pre-determined and programmed into the processor or the processor dynamically determines the brake depth during actuation and the processor causes a braking force to be applied to penetrating, wherein the processor is configured to provide a time and position of tissue contact by the penetrating member.
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Abstract
A tissue penetrating system has a housing member. A plurality of penetrating members are positioned in the housing member. A tissue stabilizing member is coupled to the housing. A penetrating member sensor is coupled to the plurality of penetrating members. The penetrating member sensor is configured to provide information relative to a depth of penetration of a penetrating member through a skin surface.
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Citations
7 Claims
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1. A system for withdrawing body fluid from a body part via a withdrawal site located on the surface of the body part, the system comprising:
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a housing member; a plurality of penetrating members positioned in the housing member; a plurality of sample chambers, each of a sample chamber associated with a penetrating member, each of a sample chamber including at least one non-optical analyte detecting member coupled to a sample chamber; an electronic penetrating member driver coupled to and for driving each of the plurality of penetrating members; a penetrating member transport device for moving each of the plurality of penetrating members into a position for alignment with the penetrating member driver; and a processor configured to control the penetrating member driver and the penetrating member transport device to drive the plurality of penetrating members and determine that a penetrating member has contacted a skin surface prior to a lancing event and in response the processor adjusting a speed of the penetrating member or the power delivered to the penetrating member for skin penetration to maintain a desired penetration velocity of the penetrating member, the processor determining whether a distal end of the penetrating member has reached a brake depth to achieve a desired final penetration depth of the penetrating member, wherein the processor uses a determination of skin contact by the penetrating member as a consideration of skin tenting by the penetrating member, wherein skin tenting is used as a consideration factor for brake depth, wherein the processor determines whether a distal end of the penetrating member has reached a brake depth based on an amount of said skin tenting, wherein the brake depth is pre-determined and programmed into the processor or the processor dynamically determines the brake depth during actuation and the processor causes a braking force to be applied to penetrating, wherein the processor is configured to provide a time and position of tissue contact by the penetrating member. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification