Recovery of cardiac event sensing and rhythm detection following electrical stimulation pulse delivery
AssigneeMedtronic, Inc.
InventorsRobert W. STADLER, Jian CAO
Life of this patent
Estimating the term…
Abstract
A medical device is configured to deliver an electrical stimulation pulse to a heart of a patient, determine a pre-stimulation cardiac event amplitude prior to delivering the electrical stimulation pulse and adjust a cardiac event sensing threshold according to a first post-stimulation decay sequence in response to the electrical stimulation pulse delivery. The first post-stimulation decay sequence is controlled by a sensing module of the medical device according to a first set of sensing control parameters including at least one sensing control parameter based on the pre-stimulation cardiac event amplitude.
Claims34
A method performed by a medical device, comprising:
- delivering an electrical stimulation pulse by a therapy delivery module of the medical device to a heart of a patient via a plurality of electrodes coupled to the medical device;
- determining a pre-stimulation cardiac event amplitude prior to delivering the electrical stimulation pulse;
- and
- automatically adjusting a cardiac event sensing threshold according to a first post-stimulation decay sequence in response to the electrical stimulation pulse delivery, the first post-stimulation decay sequence controlled a sensing module of the medical device according to a first set of sensing control parameters comprising at least one sensing control parameter based on the pre-stimulation cardiac event amplitude.
A medical device comprising:
- a therapy delivery module configured to generate and deliver a an electrical stimulation pulse to a patient's heart via a plurality of electrodes coupled to the medical device;
- a sensing module configured to receive a cardiac electrical signal and produce cardiac event signals in response to the cardiac electrical signal crossing a cardiac event sensing threshold;
- and
- a control module coupled to the sensing module and the therapy delivery module and configured to receive the cardiac event signals from the sensing module and control the therapy delivery module to deliver the electrical stimulation pulse, the control module configured to determine a pre-stimulation cardiac event amplitude prior to delivery of the electrical stimulation pulse,
- the sensing module further configured to adjust a cardiac event sensing threshold according to a first post-stimulation decay sequence in response to delivery of the electrical stimulation pulse by the therapy delivery module, the first post-stimulation decay sequence controlled by a first set of sensing control parameters comprising at least one sensing control parameter based on the pre-stimulation cardiac event amplitude.
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 an electrical stimulation pulse to a heart of a patient via a plurality of electrodes coupled to the medical device;
- determine a pre-stimulation cardiac event amplitude prior to delivering the electrical stimulation pulse;
- and
- adjust a cardiac event sensing threshold according to a first post-stimulation decay sequence in response to the electrical stimulation pulse delivery, the first post-stimulation decay sequence controlled by a first set of sensing control parameters comprising at least one sensing control parameter based on the pre-stimulation cardiac event amplitude.
Dependencies are inferred from the claim text.