Implantable device for delivering cardiac drug therapy
First Claim
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1. An implantable cardiac device, comprising:
- a sensing channel for sensing cardiac activity;
a pacing channel for delivering pacing pulses;
circuitry for recording an electrogram from the sensing channel of an evoked response to a pace and for detecting a change in the recorded electrogram indicative of cardiac ischemia by comparing the recorded electrogram with a reference electrogram;
a drug delivery apparatus for delivering a quantity of a cardiac drug; and
, circuitry for actuating the drug delivery apparatus upon detection of cardiac ischemia.
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Abstract
An implantable medical device in which an electrogram is recorded and analyzed in order to detect changes indicative of cardiac ischemia. Cardiac ischemia may be detected by recording an electrogram from a sensing channel of the device and comparing the recorded electrogram with a reference electrogram. If cardiac ischemia is detected, a cardiac drug such as a thrombolytic agent is delivered.
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Citations
30 Claims
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1. An implantable cardiac device, comprising:
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a sensing channel for sensing cardiac activity;
a pacing channel for delivering pacing pulses;
circuitry for recording an electrogram from the sensing channel of an evoked response to a pace and for detecting a change in the recorded electrogram indicative of cardiac ischemia by comparing the recorded electrogram with a reference electrogram;
a drug delivery apparatus for delivering a quantity of a cardiac drug; and
,circuitry for actuating the drug delivery apparatus upon detection of cardiac ischemia. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for operating a cardiac device implanted in a patient, comprising:
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sensing intrinsic cardiac activity;
recording an electrogram from the sensed cardiac activity in order to detect a change indicative of cardiac isehemia;
delivering a quantity of a cardiac drug to the patient upon detection of cardiac ischemia; and
,wherein a change in the recorded electrogram indicative of cardiac ischemia is detected by comparing the recorded electrogram with a reference electrogram and looking for an increased current of injury in the recorded electrogram. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An implantable cardiac device, comprising:
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means for sensing intrinsic cardiac activity;
means for recording an electrogram from the sensed cardiac activity in order to detect a change indicative of cardiac ischemia;
means for delivering a quantity of a cardiac drug to the patient upon detection of cardiac ischemia; and
,means for detecting a change in the recorded electrogram indicative of cardiac ischemia by comparing the recorded electrogram with a reference electrogram representative of cardiac ischemia. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification