Tissue penetration device
First Claim
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1. A method of lancing the tissue of a patient comprising:
- (a) providing a tissue penetration element having a tip configured to penetrate tissue;
(b) disposing the tissue penetration element in proximity to the tissue of the patient;
(c) initiating a lancing cycle including advancing a tip of the tissue penetration element into the tissue during a penetration stroke and displacing the tissue penetration element proximally over a withdrawal stroke;
(d) acquiring tissue data based on an interaction between the tissue penetration element and the tissue during at least a portion of the lancing cycle;
(e) using a processor to determine that a skin surface has been contacted by the tissue penetration element when the tip of the tissue penetration element has moved a predetermined distance with respect to an initial position; and
position of the tissue penetration element via an electronic drive force generator;
(f) using tissue data for feedback control for the processor and provide for velocity control;
(g) controlling a tissue penetration element velocity into and out of the tissue to allow for compensation for changes in skin thickness and variations in skin hydration; and
(h) achieving spontaneous blood yield.
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Abstract
A method of lancing the tissue of a patient provides a tissue penetration element with a tip configured to penetrate tissue. The tissue penetration element is disposed in proximity to the tissue of the patient. A lancing cycle is initiated. The lancing cycle advances the tip into the tissue during a penetration stroke and displaces the tissue penetration element proximally over a withdrawal stroke. Tissue data is acquired based on an interaction between the tissue penetration element and the tissue during at least a portion of the lancing cycle.
2915 Citations
4 Claims
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1. A method of lancing the tissue of a patient comprising:
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(a) providing a tissue penetration element having a tip configured to penetrate tissue; (b) disposing the tissue penetration element in proximity to the tissue of the patient; (c) initiating a lancing cycle including advancing a tip of the tissue penetration element into the tissue during a penetration stroke and displacing the tissue penetration element proximally over a withdrawal stroke; (d) acquiring tissue data based on an interaction between the tissue penetration element and the tissue during at least a portion of the lancing cycle; (e) using a processor to determine that a skin surface has been contacted by the tissue penetration element when the tip of the tissue penetration element has moved a predetermined distance with respect to an initial position; and
position of the tissue penetration element via an electronic drive force generator;(f) using tissue data for feedback control for the processor and provide for velocity control; (g) controlling a tissue penetration element velocity into and out of the tissue to allow for compensation for changes in skin thickness and variations in skin hydration; and (h) achieving spontaneous blood yield. - View Dependent Claims (2, 3, 4)
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Specification