IMPLANTABLE PULSE GENERATOR AND METHOD HAVING ADJUSTABLE SIGNAL BLANKING
First Claim
1. An implantable pulse generator, comprising:
- a signal sensor to sense a first cardiac signal;
a blanking window initiator coupled to the signal sensor, the blanking window initiator adapted to detect and identify a cardiac event in the first cardiac signal, adjust a blanking interval using an identified nature of the cardiac event, and start a blanking interval in response to the detection of the cardiac event, the blanking interval including a repeatable noise window blanking interval; and
a noise detector coupled to the signal sensor and the blanking window initiator, the noise detector adapted to analyze the first cardiac signal to detect noise in the first cardiac signal during the repeatable noise window blanking interval, wherein the blanking window initiator is adapted to repeat the repeatable noise window blanking interval in response to the detection of noise in the first cardiac signal during the repeatable noise window blanking interval.
0 Assignments
0 Petitions
Accused Products
Abstract
An implantable pulse generator senses a cardiac signal, identifies cardiac events in the cardiac signal, and starts a blanking interval including a repeatable noise window blanking interval in response to each cardiac event. When noise is detected during the repeatable noise window blanking interval, the noise window blanking interval is repeated. In one embodiment, the duration of repeated repeatable noise window blanking intervals is summed and compared to a pacing escape interval. When the sum is greater than the pacing escape interval, asynchronous pacing pulses are delivered until the noise ceases. Alternatively, when the sum is greater than the pacing escape interval, the pace escape interval is repeated.
-
Citations
20 Claims
-
1. An implantable pulse generator, comprising:
-
a signal sensor to sense a first cardiac signal;
a blanking window initiator coupled to the signal sensor, the blanking window initiator adapted to detect and identify a cardiac event in the first cardiac signal, adjust a blanking interval using an identified nature of the cardiac event, and start a blanking interval in response to the detection of the cardiac event, the blanking interval including a repeatable noise window blanking interval; and
a noise detector coupled to the signal sensor and the blanking window initiator, the noise detector adapted to analyze the first cardiac signal to detect noise in the first cardiac signal during the repeatable noise window blanking interval, wherein the blanking window initiator is adapted to repeat the repeatable noise window blanking interval in response to the detection of noise in the first cardiac signal during the repeatable noise window blanking interval. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method for operating an implantable pulse generator, the method comprising:
-
sensing a first cardiac signal;
detecting a cardiac event in the first cardiac signal;
identifying the cardiac event as one of a paced cardiac event and a sensed cardiac event;
starting a blanking interval in response to the detection of the cardiac event, the blanking interval including a repeatable noise window blanking interval and having a first overall duration if the cardiac event is identified as the paced cardiac event and a second overall duration if the cardiac event is identified as the sensed cardiac event;
detecting noise in the first cardiac signal during the repeatable noise window blanking interval; and
repeating the repeatable noise window blanking interval in response to each detection of noise in the first cardiac signal during the repeatable noise window blanking interval. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
-
-
18. An implantable pulse generator, comprising:
-
means for detecting and identifying a cardiac event in a cardiac signal;
means for starting a blanking interval in response to the detection of the cardiac event, the blanking interval including a repeatable noise window blanking interval and having an overall duration adjusted using an identified nature of the cardiac event;
means for detecting noise in the cardiac signal during the repeatable noise window blanking interval; and
means for repeating the repeatable noise window blanking interval in response to each detection of noise in the cardiac signal during the repeatable noise window blanking interval. - View Dependent Claims (19, 20)
-
Specification