Wearable cardioverter defibrillation (WCD) system with proximate programming device which stores ECG data that the WCD system normally discards
Inventors
Finch, David Peter • Engman, Zoie • Sjoquist, Steven E. • Stewart, Angela M. • Breske, Pamela F. • Niegowski, Jonathan Paul • Gustavson, Laura Marie
Assignees
West Affum Holdings DAC • Stryker Corp • Kestra Medical Technologies Inc
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Publication Number
US-12115379-B2
Publication Date
2024-10-15
Expiration Date
Abstract
In embodiments, a wearable medical system (WMS) for an ambulatory patient, which can be a wearable cardioverter defibrillator (WCD) system, analyzes the patient's ECG signal to generate a detection outcome. The WMS also has an ambulatory user interface that outputs a human-visible indication. A programming device, such as a PC, a tablet, etc., establishes a communication link with the WMS during an in-person session with the patient. The programming device may include a programming screen that reproduces the human-visible indication in real time. An advantage can be that the person programming the WMS need not strain to look also at the ambulatory user interface at the time they are looking at the programming device. Another advantage can be that the patient will recognize that he or she is better protected, and have their confidence in the WMS increased, and therefore better comply with wearing the WMS as required.
Core Innovation
The invention relates to a medical monitoring system that includes a wearable medical system worn by a patient and a programming device distinct from the wearable medical system. The wearable medical system senses an electrocardiogram signal via electrodes coupled to a support structure, analyzes the sensed ECG signal to generate a detection outcome, and transmits the detection outcome over a local communication link shorter than 99 feet for viewing on a programming screen.
The wearable medical system memory stores, as a rhythm analysis parameter, one of a first parameter value and a second parameter value different from the first parameter value. The first parameter value represents a QRS width threshold, and the wearable medical system processor analyzes the sensed ECG signal subject to the stored rhythm analysis parameter so that the detection outcome includes a first detection value due to the first parameter value being stored and a second detection value due to the second parameter value being stored.
The programming device receives a programming input via a programming user interface configured to cause the wearable medical system processor to store the second parameter value instead of the first parameter value as the rhythm analysis parameter. The programming communication module transmits the programming input over the local communication link to the wearable medical system communication module, and the wearable medical system stores the second parameter value in lieu of the first parameter value so that subsequent detection outcomes differ according to the stored parameter value.
Additional embodiments include buffering ECG data in ambulatory memory and discarding it, while the programming device stores or maintains received ECG data for longer review and can construct diagnostic images after discard. Further disclosed embodiments include an open episode recording approach that preserves ECG for longer when a detection value triggers preservation beyond the buffer period, optionally tied to decisions including defibrillator/shock decisions.
Claims Coverage
The partial content identifies one independent claim. The claim set focuses on a wearable medical system that senses ECG and generates a detection outcome using a stored rhythm-analysis parameter, together with a separate programming device that receives and displays the detection outcome and sends a programming input that changes which parameter value is stored in the wearable medical system to cause different detection outputs.
Local communication programming of ECG detection outcomes
A wearable medical system transmits a detection outcome over a local communication link shorter than 99 feet, and a programming device distinct from the wearable medical system receives the transmitted detection outcome and displays it on a programming screen while operating not coupled to the support structure.
Rhythm-analysis parameter controlling detection values
A wearable medical system memory stores, as a rhythm analysis parameter, one of a first parameter value and a second parameter value different from the first parameter value, where the first parameter value represents a QRS width threshold, and a processor analyzes the sensed ECG signal subject to the rhythm analysis parameter to generate a detection outcome having a first detection value due to the first parameter value and a second detection value different from the first detection value due to the second parameter value.
Programming input updates rhythm-analysis parameter to alter detection outcomes
A programming user interface receives a programming input configured to cause the wearable medical system processor to store the second parameter value instead of the first parameter value as the rhythm analysis parameter, and the programming communication module transmits the programming input over the local communication link to the wearable medical system so that the processor stores the second parameter value responsive to the transmitted programming input.
ECG data review via transmitted and constructed diagnostic content
The disclosed embodiments configure buffering ECG data in ambulatory memory then discarding it, while the programming device maintains received ECG data for longer review and can construct diagnostic images after discard.
Open episode recording for extended ECG retention
The disclosed embodiments include open episode recording that preserves ECG for longer when a detection value triggers preservation beyond the buffer period, optionally tied to decisions including defibrillator/shock decisions.
Overall, the claim coverage centers on a wearable medical system that produces a detection outcome based on a stored rhythm-analysis parameter and a separate programming device that can receive the detection outcome, display it to a user, and send a programming input that changes the stored parameter value so that subsequent detection outcomes differ.
Stated Advantages
Reduces clinician/patient attention burden by reproducing the ambulatory user interface’s human-visible indication on a programming screen in real time.
Enables longer review of ECG data by discarding in ambulatory memory while maintaining received ECG data on the programming device.
Supports diagnostic image construction after discard of buffered ECG data.
Preserves ECG for longer when an open episode decision is triggered by a detection value, rather than erasing after the buffer period.
Documented Applications
Programming and review of a wearable cardioverter defibrillator by using a separate in-person programming device over a short-range local communication link to view detection outcomes.
Runtime customization of rhythm-analysis parameters and generation and display of different detection outcomes based on the stored parameter value.
Displaying determinative data for detection outcomes using event marker icons with an activation input.
Open-episode recording to preserve ECG longer when a detection value triggers preservation beyond the buffer period, including disclosed embodiments tied to defibrillator/shock decisions.
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