Integrated lancing test strip with retractable lancet
First Claim
1. A method, comprising:
- holding a lancet in a fixed position relative to a test strip of an integrated lancing test strip device where at least a portion of the lancet extends from a distal end of the test strip in an extended state, wherein a retention mechanism holds the lancet in the extended state;
forming an incision in tissue with the portion of the lancet extending from the test strip in the extended state, wherein during said forming the incision the lancet and the test strip move in unison towards the tissue due to the retention mechanism holding the lancet in the extended state;
releasing the lancet from the fixed position by releasing the retention mechanism;
retracting the lancet relative to the test strip after said forming the incision, wherein said retracting includes translationally moving of the lancet relative to the test strip; and
collecting body fluid from the incision with the test strip after said retracting the lancet.
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Accused Products
Abstract
An integrated lancing test strip device includes a lancet configured to form an incision in tissue and a test strip coupled to the lancet for analyzing body fluid. A retention mechanism acts as a detent to hold the lancet in a static position relative to the test strip before forming the incision. The retention mechanism is configured to release the lancet for retracting the lancet relative to the test strip to reduce smearing of body fluid by the lancet during collection of the fluid with the test strip. In one form, the retention mechanism includes breakable tabs that are broken to release the lancet, and the lancet is retracted via translational movement. The retention mechanism in another form includes one or more dimples that release the lancet when the lancet is retracted via rotational motion. In a further form, the entire integrated device is rotated to collect fluid.
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Citations
15 Claims
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1. A method, comprising:
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holding a lancet in a fixed position relative to a test strip of an integrated lancing test strip device where at least a portion of the lancet extends from a distal end of the test strip in an extended state, wherein a retention mechanism holds the lancet in the extended state; forming an incision in tissue with the portion of the lancet extending from the test strip in the extended state, wherein during said forming the incision the lancet and the test strip move in unison towards the tissue due to the retention mechanism holding the lancet in the extended state; releasing the lancet from the fixed position by releasing the retention mechanism; retracting the lancet relative to the test strip after said forming the incision, wherein said retracting includes translationally moving of the lancet relative to the test strip; and collecting body fluid from the incision with the test strip after said retracting the lancet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method, comprising:
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holding a lancet in an extended state relative to a test strip of an integrated lancing test strip device with a retention mechanism, wherein at the extended state at least a portion of the lancet extends from a distal end of the test strip, wherein the retention mechanism holds the lancet in the extended state; forming an incision in tissue with the lancet in the extended state by moving the integrated lancing test strip device in a linear direction into the tissue; retracting the lancet to a retracted state after said forming the incision by moving the lancet relative to the test strip in a linear direction, wherein the retention mechanism releases the lancet to allow the lancet to move in the linear direction during said retracting; securing the lancet in the retracted state with the retention mechanism where the lancet is moved inside the distal end of the integrated lancing test strip device as a result of said retracting; and collecting body fluid from the incision with the test strip after said retracting the lancet.
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Specification