Pressure measuring system with ultrasonic wave
US4483345A · kind A · utility
73Cited by
6References
38Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1982 |
| Grant date | Nov 20, 1984 |
| Priority date | — |
| Expiry date | Aug 4, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/02872
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for measuring from the outside of a living body the pressure within the heart or the pressure of any portion which does not allow a measurement by the direct insertion of a pressure measuring sensor. This system provides a method of measuring the pressure of the object by generating fine bubbles through cavitation, applying a low frequency ultrasonic wave to the medium, and then detecting the bubbles which are generated with a system for detecting the high or low frequency harmonics due to the bubbles or a higher frequency ultrasonic wave applied to the medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.