Implantable cardiac pacemaker with automatic control of the connection of a probe and the implantation of the case
First Claim
1. An active implantable medical device comprising:
- a case, said case comprising a generator and a power supply battery for the generator, said battery having an output current, and said generator capable of producing monopolar stimulation impulses and bipolar stimulation impulses from said output current;
a connector head connected to said case and equipped with at least two terminals capable of being connected to electrodes of a detection and stimulation probe, said probe capable of being a monopolar probe or a bipolar probe; and
means for detecting the presence of a probe connected to the connector, said means comprising;
means for scanning a consumption by the generator of the battery output current, said scanning means being capable of measuring the output current over a first time interval and delivering a measured value of the current;
comparator means capable of comparing the measured value of the current with a pre-programmed threshold current value and indicating that the probe is connected to the connector in response to the measured value exceeding the pre-programmed threshold; and
means responsive to the measured value not exceeding the pre-programmed threshold current value for;
detecting and counting spontaneous depolarizations collected between the terminals of the connector head;
comparing the number of depolarizations thus counted with a pre-programmed counting threshold; and
delivering a signal of suspicion of implantation in the event of crossing of the counting threshold.
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Accused Products
Abstract
An implantable cardiac pacemaker with automatic control of the connection of a probe and the implantation of the case. The device includes a generator and its energy source. The generator includes: circuits for scanning battery consumption, able to measure current output by the battery and to deliver a measured value of the output current; comparator circuits, able to compare the current value measured with a pre-programmed value of threshold of current. It includes moreover circuits suited to: detect and count the spontaneous depolarizations collected between the aforementioned terminals of the head of connector; to compare the number of depolarizations thus counted with a pre-programmed threshold of counting; and to deliver a signal of suspicion of implantation in the event of crossing of this threshold of counting.
14 Citations
20 Claims
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1. An active implantable medical device comprising:
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a case, said case comprising a generator and a power supply battery for the generator, said battery having an output current, and said generator capable of producing monopolar stimulation impulses and bipolar stimulation impulses from said output current;
a connector head connected to said case and equipped with at least two terminals capable of being connected to electrodes of a detection and stimulation probe, said probe capable of being a monopolar probe or a bipolar probe; and
means for detecting the presence of a probe connected to the connector, said means comprising;
means for scanning a consumption by the generator of the battery output current, said scanning means being capable of measuring the output current over a first time interval and delivering a measured value of the current;
comparator means capable of comparing the measured value of the current with a pre-programmed threshold current value and indicating that the probe is connected to the connector in response to the measured value exceeding the pre-programmed threshold; and
means responsive to the measured value not exceeding the pre-programmed threshold current value for;
detecting and counting spontaneous depolarizations collected between the terminals of the connector head;
comparing the number of depolarizations thus counted with a pre-programmed counting threshold; and
delivering a signal of suspicion of implantation in the event of crossing of the counting threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An active implantable medical device comprising:
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a case, said case comprising a generator and a power supply battery connected to the generator, said battery having an output current, and said generator producing stimulation impulses from said output current including monopolar stimulation impulses and bipolar stimulation impulses;
a connector head connected to said case and equipped with at least two terminals capable of being connected to electrodes of a detection and stimulation probe, said probe capable of being a monopolar probe or a bipolar probe; and
a circuit for detecting the presence of a probe connected to the connector, said circuit comprising;
a battery consumption scanning circuit connected between the battery and the generator and coupled to the battery output current and having a resistor and an output corresponding to a measured value of the current;
a first comparator having as a first input the measured value of the current over a first time interval and as a second input a pre-programmed threshold current value, and an output corresponding to a probe connected to said connector head terminals when said measured value of the current exceeds said pre-programmed threshold current value; and
a detector circuit responsive to the measured value of the current not exceeding the pre-programmed threshold current value coupled to said at least two terminals and having an output signal responsive to a spontaneous depolarization detected at said terminals;
a counter responsive to said detector circuit output signals for accumulating a count of detected depolarizations; and
a second comparator having as a first input the accumulated count of detected spontaneous depolarizations and as a second input a pre-programmed counting threshold, and an output corresponding to a signal of suspicion of implantation in response to the accumulated count crossing the counting threshold. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification