Telemetry of combined endocavitary atrial and ventricular signals
First Claim
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1. A method comprising:
- selecting a first sensing electrode configuration that includes at least one electrode operatively disposed along a first heart chamber;
selecting a second sensing electrode configuration that includes at least one electrode operatively disposed along a second heart chamber;
setting a first sensing window corresponding to cardiac electrical events occurring in the second heart chamber;
setting a second sensing window corresponding to cardiac electrical events occurring in the first heart chamber;
enabling a first sense amplifier coupled to the first sensing electrode configuration;
enabling a second sense amplifier coupled to the second sensing electrode configuration;
sensing a first signal corresponding to cardiac electrical events occurring in the second heart chamber during the first sensing window using the first sensing electrode configuration, wherein a signal-to-noise ratio of the first sense amplifier is adjusted to preclude sensing of the second signal and a signal-to-noise ratio of the second sense amplifier is adjusted to preclude sensing of the first signal;
sensing a second signal corresponding to cardiac electrical events occurring in the first heart chamber during the second sensing window using the second sensing electrode configuration;
transmitting the first signal and the second signal from an implantable medical device to an external monitor during a telemetry session;
receiving, with the external monitor, the first signal and the second signal from the implantable medical device during the telemetry session;
separately adjusting, at the external monitor, a gain of each of the respective first signal and the second signal received from the implantable medical device;
merging the adjusted first signal and the second signal into a single merged signal; and
displaying the single merged signal on a display of the external monitor to provide an ECG signal.
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Abstract
A method for use in an implantable medical device system, comprising: selecting a first sensing electrode operatively disposed in a first heart chamber; setting a first sensing window corresponding to cardiac electrical events occurring in a second heart chamber; enabling a first sense amplifier coupled to the first sensing electrode during the first sensing window; sensing a first signal corresponding to cardiac electrical events occurring in the second heart chamber during the first sensing window using the first sensing electrode; and transmitting the first signal from an implantable medical device to an external monitor.
30 Citations
17 Claims
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1. A method comprising:
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selecting a first sensing electrode configuration that includes at least one electrode operatively disposed along a first heart chamber; selecting a second sensing electrode configuration that includes at least one electrode operatively disposed along a second heart chamber; setting a first sensing window corresponding to cardiac electrical events occurring in the second heart chamber; setting a second sensing window corresponding to cardiac electrical events occurring in the first heart chamber; enabling a first sense amplifier coupled to the first sensing electrode configuration; enabling a second sense amplifier coupled to the second sensing electrode configuration; sensing a first signal corresponding to cardiac electrical events occurring in the second heart chamber during the first sensing window using the first sensing electrode configuration, wherein a signal-to-noise ratio of the first sense amplifier is adjusted to preclude sensing of the second signal and a signal-to-noise ratio of the second sense amplifier is adjusted to preclude sensing of the first signal; sensing a second signal corresponding to cardiac electrical events occurring in the first heart chamber during the second sensing window using the second sensing electrode configuration; transmitting the first signal and the second signal from an implantable medical device to an external monitor during a telemetry session; receiving, with the external monitor, the first signal and the second signal from the implantable medical device during the telemetry session; separately adjusting, at the external monitor, a gain of each of the respective first signal and the second signal received from the implantable medical device; merging the adjusted first signal and the second signal into a single merged signal; and displaying the single merged signal on a display of the external monitor to provide an ECG signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A medical system, comprising:
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a telemetry circuit to communicate with an implantable medical device, wherein the telemetry circuit receives a first signal from the implantable medical device corresponding to cardiac electrical events occurring in a second heart chamber sensed during a first sensing window using a first electrode configuration that includes at least one electrode operatively disposed along a first heart chamber and receives a second signal from the implantable medical device corresponding to cardiac electrical events occurring in the first heart chamber sensed during a second sensing window using a second electrode configuration that includes at least one electrode operatively disposed along the second heart chamber, wherein the implantable medical device includes a first sense amplifier having a signal-to-noise ratio that precludes sensing of the second signal and a second sense amplifier having a signal-to-noise ratio that precludes sensing of the first signal; a user interface having at least one gain control to separately adjust a gain of each of the respective first signal and the second signal received from the implantable medical device; and a processor to acquire an ECG signal, wherein the acquired ECG signal is created by merging the first signal and the second signal; and a display to display the acquired ECG signal. - View Dependent Claims (15, 16)
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17. A method comprising:
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receiving, with an external monitor, a first signal from an implantable medical device corresponding to cardiac electrical events occurring in a second heart chamber sensed during a first sensing window using a first electrode configuration that includes at least one electrode operatively disposed along a first heart chamber; receiving, with the external monitor, a second signal from the implantable medical device corresponding to cardiac electrical events occurring in the first heart chamber sensed during a second sensing window using a second electrode configuration that includes at least one electrode operatively disposed along the second heart chamber, wherein the implantable medical device includes a first sense amplifier having a signal-to-noise ratio that precludes sensing of the second signal and a second sense amplifier having a signal-to-noise ratio that precludes sensing of the first signal; merging the first signal and the second signal into a single merged signal; and displaying the single merged signal on a display of the external monitor to provide an ECG signal.
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Specification