Control device for a medical test system
First Claim
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1. A medical test system, comprising:
- a lancing element that can be inserted into body tissue to collect body fluid;
a lancing drive for the lancing element;
a sensor element for body fluid, the sensor element being arranged on the lancing element and generating a control signal responsive to the presence of body fluid wherein the control signal indicates whether body fluid is present or absent; and
a control unit coupled to the sensor element, the control unit configured for detecting the control signal, the control unit further programmed to determine whether a sufficient amount of body fluid has been collected or a fault in the collection of body fluid has occurred;
wherein, when a fault in the collection of body fluid is determined to have occurred by the control unit after a first reciprocating lancing movement, the control unit actuates the lancing drive in an automatic second reciprocating lancing movement, the first and second reciprocating lancing movements having a repetition interval of less than 1 second, and wherein the repetition interval defines a non-zero time period beginning with initiation of the first reciprocating lancing movement and concluding with initiation of the second reciprocating lancing movement;
when the control unit determines that a sufficient amount of body fluid has been collected after the first reciprocating lancing movement, the body fluid is evaluated by the control unit without conducting a second reciprocating lancing movement; and
when the control unit actuates the lancing drive in an automatic second reciprocating lancing movement, the control unit makes a second determination whether a sufficient amount of body fluid has been collected or a fault in the collection of body fluid has occurred after the passage of a second non-zero time period following the second reciprocating lancing movement and wherein the control unit evaluates the body fluid if the second determination finds that a sufficient amount of body fluid has been collected after the second reciprocating lancing movement and wherein the control unit generates an error message if the second determination finds that a fault in the collection of body fluid has occurred after the second reciprocating lancing movement.
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Abstract
The invention concerns a control device for a medical test system which has a lancing element that can be inserted into body tissue to collect body fluid and a lancing drive for the lancing element. A sensor element for body fluid is arranged on the lancing element and a control unit is coupled to the sensor element for detecting a fault when collecting body fluid. In order to improve the success rate, the control unit actuates the lancing drive for an automatic puncture repetition in less than 1 second when a fault, e.g., inadequate wetting of a detection field, occurs.
8 Citations
27 Claims
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1. A medical test system, comprising:
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a lancing element that can be inserted into body tissue to collect body fluid; a lancing drive for the lancing element; a sensor element for body fluid, the sensor element being arranged on the lancing element and generating a control signal responsive to the presence of body fluid wherein the control signal indicates whether body fluid is present or absent; and a control unit coupled to the sensor element, the control unit configured for detecting the control signal, the control unit further programmed to determine whether a sufficient amount of body fluid has been collected or a fault in the collection of body fluid has occurred; wherein, when a fault in the collection of body fluid is determined to have occurred by the control unit after a first reciprocating lancing movement, the control unit actuates the lancing drive in an automatic second reciprocating lancing movement, the first and second reciprocating lancing movements having a repetition interval of less than 1 second, and wherein the repetition interval defines a non-zero time period beginning with initiation of the first reciprocating lancing movement and concluding with initiation of the second reciprocating lancing movement; when the control unit determines that a sufficient amount of body fluid has been collected after the first reciprocating lancing movement, the body fluid is evaluated by the control unit without conducting a second reciprocating lancing movement; and when the control unit actuates the lancing drive in an automatic second reciprocating lancing movement, the control unit makes a second determination whether a sufficient amount of body fluid has been collected or a fault in the collection of body fluid has occurred after the passage of a second non-zero time period following the second reciprocating lancing movement and wherein the control unit evaluates the body fluid if the second determination finds that a sufficient amount of body fluid has been collected after the second reciprocating lancing movement and wherein the control unit generates an error message if the second determination finds that a fault in the collection of body fluid has occurred after the second reciprocating lancing movement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 26)
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19. A method of using a test system of the type having a lancing element that can be inserted into body tissue to collect body fluid and a lancing drive for driving the lancing element in a reciprocating puncture movement, the method comprising:
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driving the lancet in an initial reciprocating puncture movement with the lancing drive to puncture the body tissue; collecting body fluid with the lancet after the initial reciprocating puncture movement; using a sensor of the lancet to detect body fluid that has been collected with the lancet after the initial reciprocating puncture movement; using a control unit that is connected to the sensor to determine whether a sufficient amount of body fluid has been collected or a fault in collecting body fluid has occurred after the initial reciprocating puncture movement; wherein, when a fault is determined to have occurred after the initial reciprocating puncture movement by the control unit, driving the lancet in a second reciprocating puncture movement, the initial and second reciprocating puncture movements having a repetition interval of less than 1 second, and wherein the repetition interval defines a non-zero time period beginning with initiation of the initial reciprocating puncture movement and concluding with initiation of the second reciprocating puncture movement; when the control unit determines that a sufficient amount of body fluid has been collected after the initial reciprocating puncture movement, the body fluid is evaluated by the control unit without conducting a second reciprocating puncture movement; and when the lancet is driven in a second reciprocating puncture movement, the control unit determines whether a sufficient amount of body fluid has been collected or a fault in collecting the body fluid has occurred after the second reciprocating puncture movement and, when the control unit determines that a sufficient amount of body fluid has been collected after the second reciprocating puncture movement, the body fluid is evaluated by the control unit and, when the control unit determines that a fault has occurred after the second reciprocating puncture movement, the control unit generates an error message. - View Dependent Claims (20, 21, 22, 23, 24, 25, 27)
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Specification