Implantable cardiac stimulation system providing capture threshold stability assessment and method
US7035687B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2003 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | Jul 26, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3706
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An implantable cardiac stimulation system provides capture threshold stability assessment. The system includes an implantable pulse generator that provides pacing stimulation pulses, an implantable lead system that couples the pulse generator to a patient's heart, and a capture threshold test circuit that performs capture threshold tests with the pulse generator and provides capture thresholds at spaced apart times. A capture threshold processor responsive to the capture thresholds provides capture threshold stability indicia. The capture threshold stability indicia may be a threshold stability index equal to the ratio of the peak-to-peak threshold fluctuation and the mean capture threshold. The threshold stability index may be compared to a given standard to determine if the capture thresholds are unstable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.