Flexible lancet
First Claim
1. A system for withdrawing body fluid, comprising:
- a housing having an opening;
a flexible lancet having a lancet body and a tip, the lancet being configured substantially straight before use;
a drive unit for moving the lancet in a drive direction during a lancing operation; and
a guide element which contacts and flexes the lancet relative to the drive direction during a movement of the lancet toward the skin for puncture, wherein the guide element is curved.
3 Assignments
0 Petitions
Accused Products
Abstract
A system for withdrawing body fluid is described which has a housing with at least one opening and at least one lancet which is elongate and substantially straight in its original and unused form. The lancet has a distal end with a lancet tip for carrying out a lancing operation. The system also includes a drive unit for driving the lancet in a drive direction and at least one guide element which makes contact with the lancet at least during the lancing operation and guides the lancet movement such that the lancet is bent relative to the drive direction. The lancet can have a high restoring force such that it returns to its original substantially straight shape after contacting the guide element.
35 Citations
56 Claims
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1. A system for withdrawing body fluid, comprising:
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a housing having an opening; a flexible lancet having a lancet body and a tip, the lancet being configured substantially straight before use; a drive unit for moving the lancet in a drive direction during a lancing operation; and a guide element which contacts and flexes the lancet relative to the drive direction during a movement of the lancet toward the skin for puncture, wherein the guide element is curved. - 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, 42, 43, 44, 45, 46)
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47. A device for withdrawing body fluid, comprising:
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a housing having an opening; a substantially planar carrier tape disposed in the housing; a lancet having a lancet body and tip, the lancet being arranged substantially flat on the carrier tape; a drive element for driving the lancet in a drive direction during a lancing operation; and a guide element that contacts and bends the lancet during a movement of the lancet toward the skin for puncture such that the lancet tip is reoriented relative to the drive direction, wherein the bending changes the shape of the lancet. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54)
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55. A system for withdrawing body fluid, comprising:
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a housing having an opening; a flexible lancet having a lancet body and a tip, the lancet being configured substantially straight before use; a drive unit for moving the lancet in a drive direction during a lancing operation; and a guide element which contacts and flexes the lancet relative to the drive direction during a movement of the lancet toward the skin for puncture, wherein the shape of the guide element determines the flexing direction of the lancet.
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56. A system for withdrawing body fluid, comprising:
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a housing having an opening; a flexible lancet having a lancet body and a tip, the lancet being configured substantially straight before use; a drive unit for moving the lancet in a drive direction during a lancing operation; and a guide element which contacts and flexes the lancet relative to the drive direction during a movement of the lancet toward the skin for puncture, wherein the lancet moves within the guide element and is flexed by the guide element during the puncture movement.
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Specification