Cardiac sense amplifier for capture verification
US6427085B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 1999 |
| Grant date | Jul 30, 2002 |
| Priority date | — |
| Expiry date | May 11, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3712
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A cardiac rhythm management device having a capture verification sensing circuit for use in either a normal beat to beat pacing mode or an autothreshold mode. The cardiac rhythm management device is coupled to one or more pacing leads having pacing/sensing electrodes coupled thereto, and includes a sensing circuit for sensing electrical activity of the patient's heart, wherein the sensing circuit includes a dedicated evoked response sense amplifier and at least one high pass coupling capacitor electrically connected as a portion of a high pass network and between a pacing/sensing electrode and a blanking switch. A plurality of high pass coupling capacitors are coupled in parallel each having a separate blanking switch, thereby creating a differential network to offset imbalance sensed from the electrode due to extraneous factors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.