Implantable device with automatic sensing adjustment
First Claim
1. An implantable cardiac pacemaker having means for delivering pacing pulses to a first chamber of a patient'"'"'s heart and means for sensing depolarizations of a second chamber of the patient'"'"'s heart, wherein the means for sensing depolarizations of the second chamber of the patient'"'"'s heart comprises:
- means for defining a base sensing threshold;
means responsive to delivery of a pacing pulse to the first chamber of the patient'"'"'s heart for defining a first increased sensing threshold greater than the base sensing threshold.
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Accused Products
Abstract
An implantable cardiac pacemaker and a method of its operation. The pacemaker delivers pacing pulses to a first chamber of a patient'"'"'s heart and senses depolarizations of a second chamber of the patient'"'"'s heart. The amplifier for sensing depolarizations of the second chamber of the patient'"'"'s heart defines a base sensing threshold and, responsive to delivery of a pacing pulse to the first chamber of the patient'"'"'s heart for defines an increased sensing threshold greater than the base sensing threshold. The increased sensing threshold persists for a defined period of time following delivery of a pacing pulse to the first chamber of the patient'"'"'s heart and thereafter gradually decreases from the increased sensing threshold to the base sensing threshold.
30 Citations
10 Claims
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1. An implantable cardiac pacemaker having means for delivering pacing pulses to a first chamber of a patient'"'"'s heart and means for sensing depolarizations of a second chamber of the patient'"'"'s heart, wherein the means for sensing depolarizations of the second chamber of the patient'"'"'s heart comprises:
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means for defining a base sensing threshold; means responsive to delivery of a pacing pulse to the first chamber of the patient'"'"'s heart for defining a first increased sensing threshold greater than the base sensing threshold. - View Dependent Claims (2, 3, 4, 5)
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6. A method of controlling an implantable cardiac pacemaker having means for delivering pacing pulses to a first chamber of a patient'"'"'s heart and means for sensing depolarizations of a second chamber of the patient'"'"'s heart, comprising:
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defining a base sensing threshold; responsive to delivery of a pacing pulse to the first chamber of the patient'"'"'s heart, defining a first increased sensing threshold greater than the base sensing threshold. - View Dependent Claims (7, 8, 9, 10)
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Specification