Tissue penetration device
First Claim
1. A method of lancing the tissue of a patient comprising:
- (a) providing a tissue penetration element having a tip configured to penetrate tissue and a shaft portion and a controllable electronic driver that can achieve a desired velocity versus position profile;
(b) disposing the tissue penetration element in proximity to the tissue of the patient;
(c) initiating a tissue penetrating element launch phase when the tissue penetrating element moves toward the skin and a tissue contact phase when a distal end of the tissue penetrating element makes initial contact with a skin surface;
(d) initiating a tissue deformation phase when the skin bends depending on its elastic properties;
(e) initiating a tissue lancing phase when the tissue penetrating element hits an inflection point on the skin and begins to cut the skin and the tissue penetrating element continues cutting the skin;
(f) displacing the tissue penetration element during a withdrawal stroke with an average velocity that is lower than an average velocity of the tissue penetration element during the penetration stroke with the tip remaining stationary at the position of maximum inward displacement of the patient for a predetermined time between the penetration stroke and the withdrawal stroke; and
(g) removing the tip from the tissue.
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0 Petitions
Accused Products
Abstract
A method of lancing the tissue of a patient provides a tissue penetration element with a tip configured to penetrate tissue and a shaft portion. The tissue penetration element is disposed in proximity to the tissue of the patient. The tissue penetration element is driven distally towards the tissue of the patient. Contact is made between the tip and the tissue of the patient. The tip is advanced into the tissue during a penetration stroke to a position of maximum inward displacement. The tissue penetration element is displaced proximally over a withdrawal stroke at an average velocity that is substantially lower than an average velocity of the tissue penetration element during the penetration stroke. The tip is removed from the tissue.
2137 Citations
9 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 and a shaft portion and a controllable electronic driver that can achieve a desired velocity versus position profile; (b) disposing the tissue penetration element in proximity to the tissue of the patient; (c) initiating a tissue penetrating element launch phase when the tissue penetrating element moves toward the skin and a tissue contact phase when a distal end of the tissue penetrating element makes initial contact with a skin surface; (d) initiating a tissue deformation phase when the skin bends depending on its elastic properties; (e) initiating a tissue lancing phase when the tissue penetrating element hits an inflection point on the skin and begins to cut the skin and the tissue penetrating element continues cutting the skin; (f) displacing the tissue penetration element during a withdrawal stroke with an average velocity that is lower than an average velocity of the tissue penetration element during the penetration stroke with the tip remaining stationary at the position of maximum inward displacement of the patient for a predetermined time between the penetration stroke and the withdrawal stroke; and (g) removing the tip from the tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. 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 and a shaft portion and a controllable electronic driver that can achieve a desired velocity versus position profile; (b) disposing the tissue penetration element in proximity to the tissue of the patient; (c) initiating a tissue penetrating element launch phase when the tissue penetrating element moves toward the skin and a tissue contact phase when a distal end of the tissue penetrating element makes initial contact with a skin surface; (d) initiating a tissue deformation phase when the skin bends depending on its elastic properties; (e) initiating a tissue lancing phase when the tissue penetrating element hits an inflection point on the skin and begins to cut the skin and the tissue penetrating element continues cutting the skin; (f) allowing the tissue penetration element to settle upon reaching the point of maximum inward penetration for about 1-200 milliseconds, wherein no driving force is imposed on the tissue penetration element while settling; (g) displacing the tissue penetration element during a withdrawal stroke at an average velocity that is lower than an average velocity of the tissue penetration element during the penetration stroke with the tip remaining stationary at the position of maximum inward displacement in a tissue site of the patient for a time between the penetration stroke and the withdrawal stroke; and (h) removing the tip from the tissue,
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Specification