Cardiac event sensing and pacing after delivery of an electrical stimulation pulse
AssigneeMedtronic, Inc.
InventorsRobert W. STADLER, Jian CAO
Life of this patent
Estimating the term…
Abstract
A medical device is configured to deliver a shock to a patient's heart via electrodes coupled to the medical device and set an escape interval timer to start running an escape interval after delivering the electrical shock. A sensing module of the medical device is configured to sense a cardiac event in response to a cardiac electrical signal received by the medical device crossing a sensing threshold. The medical device determines if the cardiac event meets reset criteria and allows the escape interval timer to continue running the escape interval if the cardiac event does not meet the reset criteria.
Claims31
A method performed by a medical device, comprising:
- delivering an electrical shock to a heart of a patient;
- setting an escape interval timer to start running an escape interval after delivering the electrical shock;
- sensing a cardiac event in response to a cardiac electrical signal received by the medical device crossing a sensing threshold during the escape interval;
- determining if the cardiac event meets reset criteria;
- allowing the escape interval timer to continue running the escape interval if the cardiac event does not meet the reset criteria;
- and
- resetting the escape interval timer if the cardiac event meets the reset criteria.
A medical device, comprising:
- a therapy delivery module configured to deliver an electrical shock to a patient's heart via electrodes coupled to the medical device;
- a sensing module configured to receive a cardiac electrical signal, sense a cardiac event in response to the cardiac electrical signal crossing a sensing threshold, and produce a cardiac event sense signal in response to sensing the cardiac event;
- and
- a control module coupled to the sensing module and the therapy delivery module and configured to:
- set an escape interval timer to start running an escape interval after the therapy delivery module delivers the electrical shock,
- in response to receiving a cardiac event sense signal from the sensing module during the escape interval timer, determine if the sensed cardiac event meets reset criteria,
- allow the escape interval timer to continue running the escape interval if the cardiac event does not meet the reset criteria, and
- reset the escape interval timer in response to the sensed cardiac event meeting the reset criteria.
A non-transitory, computer-readable medium storing a set of instructions which, when executed by a control module of a medical device, cause the medical device to:
- deliver a shock to a patient's heart via electrodes coupled to the medical device
- set an escape interval timer to start running an escape interval after delivering the electrical shock;
- sense a cardiac event in response to a cardiac electrical signal received by the medical device crossing a sensing threshold;
- determine if the cardiac event meets reset criteria;
- and
- allow the escape interval timer to continue running the escape interval if the cardiac event does not meet the reset criteria and reset the escape interval timer in response to the cardiac event meeting the reset criteria.
Dependencies are inferred from the claim text.