Optimization of pacemaker settings with R-wave detection
US9220903B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2014 |
| Grant date | Dec 29, 2015 |
| Priority date | — |
| Expiry date | Dec 16, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/36842
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The system provides information to facilitate efficient optimization of programmer settings for cardiac pacemakers. It simultaneously measures a patient's electrocardiogram and peripheral blood pressure (or volumetric displacement) waveform in order to calculate, in real-time and non-invasively, a value correlated to the pre-ejection time (PET) and, optionally, ejection duration (ED) for the patient's left ventricle. The peripheral pulse waveform can be monitored with a wrist mounted tonometer, or a suitable brachial cuff device. The time difference between the occurrence of the R-wave on the ECG trace and the foot of the pulse on the radial blood pressure waveform is defined as a surrogate pre-ejection time interval (SPET). Data including the electrocardiogram and peripheral pulse trace, as well as the calculated, surrogate pre-ejection time interval (SPET) for each heart beat and trending is displayed on a computer monitor, thereby allowing a physician or nurse to quickly optimize PET for the patient and adjust programmer settings for an implanted pacemaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.