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Machine translation
1. (WO1981002511) APPARATUS AND METHOD FOR SUPPRESSING RESONANCE IN AN ELECTROMANOMETRY SYSTEM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/002511    International Application No.:    PCT/US1981/000298
Publication Date: 17.09.1981 International Filing Date: 10.03.1981
IPC:
A61B 5/0215 (2006.01)
Applicants:
Inventors:
Priority Data:
129495 11.03.1980 US
Title (EN) APPARATUS AND METHOD FOR SUPPRESSING RESONANCE IN AN ELECTROMANOMETRY SYSTEM
(FR) DISPOSITIF ET PROCEDE DE SUPPRESSION DE LA RESONANCE DANS UN SYSTEME DE MESURE ELECTROMANOMETRIQUE
Abstract: front page image
(EN)A novel apparatus and method for suppressing unwanted resonance in an electromanometry system. The apparatus includes a compliant air cavity (12) connected through a variable impedance device (14) which is coupled in parallel to the liquid-filled catheter (28) 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.
(FR)Dispositif et procede nouveaux de suppression de la resonance superflue dans un systeme de mesure electromanometrique. Le dispositif comprend une cavite (12) d'air souple connectee au moyen d'un dispositif (14) a impedance variable couple en parallele au catheter (28) rempli de liquide du systeme de mesure electromanometrique. En faisant varier l'impedance hydraulique au travers de laquelle la cavite d'air souple est couplee au systeme, il est possible d'obtenir un accord d'impedance precis sur une gamme etendue de valeurs d'impedance hydraulique, ce qui permet la suppression de la resonance nocive et une amelioration de la reponse en frequence des formes d'ondes enregistrees dans une grande variete de systemes a catheter transducteur.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)