Implantable myocardial ischemia monitor and related method
First Claim
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1. An apparatus for assisting in the diagnosis of myocardial ischemia of a human heart, said apparatus being fully implantable beneath the skin of a patient and comprising:
- at least one electrode, said electrode being implantable beneath the skin of a patient and arranged for establishing electrical contact with the heart;
sensing means implantable beneath the skin of a patient, said sensing means being coupled to said at least one electrode for generating an electrogram representative of the activity of the heart at said at least one electrode, said electrogram including ST segments having voltage magnitudes;
read means implantable beneath the skin of a patient for reading the voltage magnitudes of said electrogram ST segments;
memory means implantable beneath the skin of a patient and coupled to said read means for storing the voltage magnitudes of said electrogram ST segments; and
communication means implantable beneath the skin of a patient and coupled to said memory means for transmitting said magnitudes of said electrogram ST segments to a nonimplanted external receiver.
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Abstract
An implantable device assists in the diagnosis of myocardial ischemia of a human heart and includes a plurality of electrodes and a like plurality of sense amplifiers for generating an electrogram for each of the electrodes. A digital to analog converter reads the voltage magnitudes of the electrogram ST segments which are then stored in a memory. An implantable receiver/transmitter is arranged to transmit the magnitudes of the electrogram ST segments to a nonimplanted external receiver.
580 Citations
31 Claims
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1. An apparatus for assisting in the diagnosis of myocardial ischemia of a human heart, said apparatus being fully implantable beneath the skin of a patient and comprising:
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at least one electrode, said electrode being implantable beneath the skin of a patient and arranged for establishing electrical contact with the heart; sensing means implantable beneath the skin of a patient, said sensing means being coupled to said at least one electrode for generating an electrogram representative of the activity of the heart at said at least one electrode, said electrogram including ST segments having voltage magnitudes; read means implantable beneath the skin of a patient for reading the voltage magnitudes of said electrogram ST segments; memory means implantable beneath the skin of a patient and coupled to said read means for storing the voltage magnitudes of said electrogram ST segments; and communication means implantable beneath the skin of a patient and coupled to said memory means for transmitting said magnitudes of said electrogram ST segments to a nonimplanted external receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of providing data for use in diagnosing myocardial ischemia of a human heart, said method including the steps of:
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providing at least one electrode; implanting said electrode beneath the skin of a patient; establishing electrical contact between said electrode and the heart of the patient; providing sensing means implanted beneath the skin of the patient coupled to said electrode; generating an electrogram for said electrode representative of the activity of the heart at said electrode, said electrogram including ST segments; providing voltage read means implanted beneath the skin of the patient; reading the voltage magnitudes of said electrogram ST segments; providing memory means implanted beneath the skin of the patient coupled to said voltage read means; storing the voltage magnitudes of said electrogram ST segments in said memory means; providing communication means implanted beneath the skin of the patient coupled to said memory means; and transmitting said magnitudes of said electrogram ST segments to a nonimplanted external receiver. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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24. A method of providing data for use in diagnosing myocardial ischemia of a human heart, said method including the steps of:
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providing a plurality of electrodes; implanting said electrodes beneath the skin of a patient; establishing electrical contact between said electrodes and respective different regions of the heart of the patient; providing sensing means implanted beneath the skin of the patient coupled to said electrodes; generating an electrogram for each said electrode representative of the activity of the heart at each said electrode, each said electrogram including ST segments; providing voltage read means implanted beneath the skin of the patient; reading the voltage magnitudes of said ST segments of each of said electrograms; providing memory means implanted beneath the skin of the patient coupled to said voltage read means; storing the voltage magnitudes of said ST segments of each said electrogram in said memory means; providing communication means implanted beneath the skin of the patient coupled to said memory means; and transmitting said magnitudes of said electrogram ST segments to a nonimplanted external receiver. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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Specification