Cardiac monitor wristwatch
US4086916A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1975 |
| Grant date | May 2, 1978 |
| Priority date | — |
| Expiry date | Sep 19, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/02
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A cardiac monitoring system easily incorporated into existing electronic digital wristwatches. The self-contained unit monitors the arterial pulse rate by means of a pair of highly directional ultrasonic transducers positioned in a special mounting in the wrist band of the watch. This special mounting also includes an integrated circuit which contains the transmitter and receiver-detector electronics for connection to the transducers. The output signal from the receiver in the special mount is fed via a shielded cable in the wrist band to the processing electronics physically located within the face mounting of the watch. The processing electronics monitors the user's pulse rate and provides a digital output indication thereof if it exceeds pre-established upper and lower threshold limits. The processing circuitry also includes means for detecting an erratic heartbeat, such as a missing pulse or other irregularities, and provides an output alarm indication, both audio and visual, when such is detected. The unit is entirely self-contained and utilizes the wristwatch's standard battery power supply. External select switches are preferably provided for selection of either a time or pu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.