Apparatus and method for suppressing resonance in an electromano

Details Apparatus and method for suppressing resonance in an electromano Apparatus and method for suppressing resonance in an electromano

1980-03-11

1982-06-22

Pellegrino, Stephen C.

Surgery

Truss

Pad

128748, 73707, 138 46, 251122, 251DIG4, A61B 502

Patent

active

043357296

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.

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patent: 3877428 (1975-04-01), Seagle et al.
patent: 3896800 (1975-07-01), Cibulka
Proefschrift, "The Response of Catheter Manometer Systems Used for Direct Blood Pressure Measurements", May 1966.
Latimer, R. D. et al., Anaesthesia, vol. 29, 1974, pp. 307-317.
Latimer, K. E., Bibliotheca Cardiologica, vol. 31, 1973, pp. 7-13 and 20-27.
Crul, J. F., Acta Anaestesiologica Scandinavica, 6 Suppl. 11, pp. 135-169.

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