Pacemaker noise rejection system
US4779617A · kind A · utility
159Cited by
7References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 6, 1986 |
| Grant date | Oct 25, 1988 |
| Priority date | — |
| Expiry date | Oct 6, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3704
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A noise rejection circuit for an implantable pacemaker. During re-triggerable relative refractory periods following a heartbeat, the peak noise level is sensed; the relative refractory period is re-started whenever the input signal exceeds the previous peak. Following a time-out of the relative refractory period, the peak value detected, representing the noise level, is added to the programmed threshold value; the sum is used as the threshold value during sensing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.