Subcutaneous defibrillation system and method using same
First Claim
1. A medical system, comprising:
- a housing configured for implantation within a patient'"'"'s subclavicular region;
detection circuitry provided in the housing and configured to detect cardiac electrical activity;
energy delivery circuitry provided in the housing and configured to deliver therapy to treat a detected tachycardia or fibrillation episode; and
a lead coupled to the housing, detection circuitry, and energy delivery circuitry, the lead configured for subcutaneous, non-intrathoracic placement within the patient, the lead comprising;
a lead body configured to extend from the patient'"'"'s subclavicular region to a location just below the patient'"'"'s ribs or the subxiphoid process of the patient'"'"'s sternum;
a defibrillation electrode provided at a distal end of the lead body; and
a pair of sensing electrodes provided on the lead body at locations that overlie a lateral aspect of the patient'"'"'s left ventricle between the third and eleventh ribs.
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Accused Products
Abstract
A medical system includes a housing configured for implantation within a patient'"'"'s subclavicular region. Detection circuitry provided in the housing is configured to detect cardiac electrical activity. Energy delivery circuitry provided in the housing is configured to deliver therapy to treat a detected tachycardia or fibrillation episode. A lead is coupled to the housing, detection circuitry, and energy delivery circuitry. The lead is configured for subcutaneous, non-intrathoracic placement within the patient, and extends from the subclavicular region to just below the patient'"'"'s ribs or the subxiphoid process. A defibrillation electrode is provided at a distal end of the lead body. A pair of sensing electrodes is provided on the lead body at locations consistent with positions V2-V5 of surface electrocardiogram electrodes.
172 Citations
28 Claims
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1. A medical system, comprising:
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a housing configured for implantation within a patient'"'"'s subclavicular region;
detection circuitry provided in the housing and configured to detect cardiac electrical activity;
energy delivery circuitry provided in the housing and configured to deliver therapy to treat a detected tachycardia or fibrillation episode; and
a lead coupled to the housing, detection circuitry, and energy delivery circuitry, the lead configured for subcutaneous, non-intrathoracic placement within the patient, the lead comprising;
a lead body configured to extend from the patient'"'"'s subclavicular region to a location just below the patient'"'"'s ribs or the subxiphoid process of the patient'"'"'s sternum;
a defibrillation electrode provided at a distal end of the lead body; and
a pair of sensing electrodes provided on the lead body at locations that overlie a lateral aspect of the patient'"'"'s left ventricle between the third and eleventh ribs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method, comprising:
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providing a pulse generator disposed in a housing and implanted within a patient'"'"'s subclavicular region;
providing a lead coupled to the pulse generator and configured for subcutaneous, non-intrathoracic placement within the patient, the lead comprising a lead body configured to extend from the patient'"'"'s subclavicular region to a location just below the patient'"'"'s ribs or the subxiphoid process of the patient'"'"'s sternum, a defibrillation electrode provided at a distal end of the lead body, and a pair of sensing electrodes provided on the lead body at locations that overlie a lateral aspect of the patient'"'"'s left ventricle between the third and eleventh ribs;
sensing cardiac electrical activity;
detecting a tachycardia or fibrillation episode using a vector defined between the pair of sensing electrodes;
delivering a therapy to treat the detected tachycardia or fibrillation episode using a vector defined between the housing of the pulse generator and the defibrillation electrode. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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Specification