Device for detecting tachycardiac rhythm disturbances
First Claim
1. (amended) A device for detecting tachycardiac rhythm disturbances, comprising:
- a measuring unit for picking up and reproducing a measurement signal dependent on intracardial impedance at an output thereof; and
an evaluation unit which is connected at an input side thereof to the measuring unit and which is adapted to determine and output a first signal which corresponds to the difference of a maximum and a minimum measurement signal within at least one defined period of time, wherein the evaluation unit is additionally adapted to determine and output a second signal which is dependent on the integral of the measurement signal over at least one defined second period of time, and the first signal associated with the second period of time, wherein the first-mentioned period of time is in front of the second period of time or is identical to the second period of time.
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Accused Products
Abstract
A device for detecting tachycardiac rhythm disturbances, comprising a measuring unit (20, 23, 24, 26, 30, 32, 34, 38, 40, 41) for picking up and reproducing a measurement signal dependent on intracardial impedance at its output and an evaluation unit (42, 44, 46, 48, 50, 52) connected at the input to the measuring unit (20, 23, 24, 26, 30, 32, 34, 38, 40, 41). The evaluation unit (42, 44, 46, 48, 50, 52) is adapted to output both a first signal which corresponds to the difference of a maximum and a minimum measurement signal within at least one predeterminable period of time and also a second signal which is dependent on the integral of the measurement signal over at least one predeterminable period of time.
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Citations
69 Claims
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1. (amended) A device for detecting tachycardiac rhythm disturbances, comprising:
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a measuring unit for picking up and reproducing a measurement signal dependent on intracardial impedance at an output thereof; and
an evaluation unit which is connected at an input side thereof to the measuring unit and which is adapted to determine and output a first signal which corresponds to the difference of a maximum and a minimum measurement signal within at least one defined period of time, wherein the evaluation unit is additionally adapted to determine and output a second signal which is dependent on the integral of the measurement signal over at least one defined second period of time, and the first signal associated with the second period of time, wherein the first-mentioned period of time is in front of the second period of time or is identical to the second period of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65)
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20. (amended) An implantable electrostimulation device for the treatment of tachycardiac rhythm disturbances, comprising:
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a detection unit;
a control unit; and
a therapy unit adapted to produce a cardioversion or defibrillation electrotherapy to be applied to the heart, wherein the detection unit comprises;
a measuring unit for picking up and reproducing a measurement signal corresponding to an intracardial impedance at an output thereof; and
an evaluation unit connected at an input to the measuring unit, and wherein the control unit receives output signals from the evaluation unit and controls the activity of the measuring unit, the evaluation unit and the therapy unit, and wherein the evaluation unit is adapted to determine and output a first signal which corresponds to the difference of a maximum and a minimum measurement signal within at least one defined period of time, and wherein the evaluation unit is additionally adapted to determine and output a second signal which is dependent on the integral of the measurement signal over at least one defined second period of time, and the first signal associated with the second period of time, wherein the first-mentioned period of time is in front of the second period of time or is identical to the second period of time. - View Dependent Claims (21, 22, 23, 24, 66, 67, 68, 69)
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Specification