Heartbeat synchronous wave detecting apparatus
US5119824A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 1, 1990 |
| Grant date | Jun 9, 1992 |
| Priority date | — |
| Expiry date | Jun 1, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/025
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for detecting a heartbeat synchronous wave produced from a subject in synchronization with heartbeat of the subject, including a probe which is adapted to be set on a body portion of the subject, a sensor for detecting the heartbeat synchronous wave produced from the subject, the sensor being supported by the probe, a judging device for judging whether or not an electric knife is being used on the subject, and a device for, if the judging device judges that the electric knife is being used, ceasing from detecting the heartbeat synchronous wave, or discarding the heartbeat synchronous wave detected when the electric knife is being used. The judging device may be adapted to detect a high frequency electric current flowing from an electric knife to the probe via the body portion of the subject, and judge whether or not the electric knife is being used on the subject, based on the detected high frequency electric current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.