Cardiac frequency measuring instrument
US4108166A · kind A · utility
Inventor
Key dates
| Filing date | May 19, 1976 |
| Grant date | Aug 22, 1978 |
| Priority date | — |
| Expiry date | May 19, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/332
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The specification describes a cardiac frequency measuring instrument which has a frequency measuring device to be carried on the arm of a user. A cable connects the measuring instrument with measuring electrodes carried on the body and with an optical display for the measured heart frequency. There is a miniaturized digital circuit accommodated in the housing having the size of a wrist watch with a minimum electrical power* for the digital measurement and display of the cardiac frequency. Use is made of a resonant amplifier, connected as a high pass filter, for suppressing the amplification and display of motional artefacts. FNT *consumption or dissipation
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.