Detection of cardiac evoked potentials
US4858610A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1988 |
| Grant date | Aug 22, 1989 |
| Priority date | — |
| Expiry date | Feb 8, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3716
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Automatic detection of cardiac pacer evoked potentials may be obtained through a cardiac pacer lead positioned in a heart chamber. An electrical stimulus is emitted in unipolar mode from a first electrode to stimulate muscular contraction. The cardiac electrical activity evoked by the stimulus is then detected in unipolar mode by a second electrode which is spaced from the first electrode and free of electrical connection thereto. Accordingly, signal interference caused by residual polarization of the first electrode is suppressed. The natural cardiac electrical activity is sensed in a bipolar mode, and the pulse is inhibited if a heartbeat is detected within an alert period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.