Apparatus for refining signals derived from fetal heartbeats
US3982528A · kind A · utility
13Cited by
6References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 24, 1975 |
| Grant date | Sep 28, 1976 |
| Priority date | — |
| Expiry date | Feb 24, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/02
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Circuitry for refinement of fetal heart signals from an ultrasonic (or other mechanical energy) transducer, featuring improved signal processing circuitry connected to the transducer to convert useful information-carrying energy in the transducer output into a refined electrical signal, and improved correlation circuitry for providing an output to a cardiotachometer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.