Test system for measuring the concentration of an analyte in a body fluid
First Claim
1. An actuator for driving a test element, the test element comprises a lancet for perforating a skin portion of a living organism and the actuator comprising:
- an engaging part for engaging and driving the test element to perform a lancing motion;
a lancing spring;
a lancing actuator, wherein the lancing actuator biases the lancing spring by executing a forward movement and thereby exerting a spring biasing force on the engaging part; and
a latch element, wherein the latch element is force-sensitive and exerts a magnetic retention force to hold back the engaging part that is parallel to the spring biasing force, wherein the magnetic retention force counteracts the spring biasing force, and wherein the latch element releases the engaging part when the spring biasing force exerted by the lancing actuator exceeds the magnetic retention force exerted by the latch element, thereby allowing the test element to perform the lancing motion.
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Accused Products
Abstract
An actuator for driving a test element is disclosed. The test element can comprise a lancet for perforating the skin of a living organism. The actuator can comprise an engaging part for engaging and driving the test element in a lancing motion. The actuator can further comprise a lancing actuator and a lancing spring. The lancing actuator can bias the lancing spring by executing a forward movement and thereby can exert a biasing force on the engaging part. The actuator can further comprise a latch element. The latch element can be a force-sensitive latch element for exerting a retention force to hold back the engaging part. The retention force can counteract the biasing force. The latch element can release the engaging part when the biasing force exerted by the lancing actuator exceeds the retention force exerted by the latch element, thereby allowing the test element to perform the lancing motion.
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Citations
25 Claims
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1. An actuator for driving a test element, the test element comprises a lancet for perforating a skin portion of a living organism and the actuator comprising:
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an engaging part for engaging and driving the test element to perform a lancing motion; a lancing spring; a lancing actuator, wherein the lancing actuator biases the lancing spring by executing a forward movement and thereby exerting a spring biasing force on the engaging part; and a latch element, wherein the latch element is force-sensitive and exerts a magnetic retention force to hold back the engaging part that is parallel to the spring biasing force, wherein the magnetic retention force counteracts the spring biasing force, and wherein the latch element releases the engaging part when the spring biasing force exerted by the lancing actuator exceeds the magnetic retention force exerted by the latch element, thereby allowing the test element to perform the lancing motion. - 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)
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Specification