Apparatus and method for suppressing resonance in an electromanometry system
US4335729A · kind A · utility
16Cited by
7References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1980 |
| Grant date | Jun 22, 1982 |
| Priority date | — |
| Expiry date | Mar 11, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S251/903
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A novel apparatus and method for suppressing unwanted resonance in an electromanometry system. The apparatus includes a compliant air cavity connected through a variable impedance device which is coupled in parallel to the liquid-filled catheter of the electromanometry system. By varying the hydraulic impedance through which the compliant air cavity is coupled to the system, precise impedance matching capability is provided over a wide range of hydraulic impedance values, thereby permitting suppression of unwanted resonance and improved frequency response of recorded waveforms in a wide variety of catheter-transducer systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.