Catheter

Details Catheter Catheter

1981-09-08

1984-06-26

Cohen, Lee S.

Surgery

Truss

Pad

128748, 73727, A61B 502

Patent

active

044560133

ABSTRACT:
A catheter including a support suitable for insertion into a body organ, a transducer carried by the support, the transducer including a flexible piezoelectric polymeric membrane, and a pair of surface electrodes mounted on the membrane, the support including a rigid portion defining a flexure cavity inside the catheter, the membrane being mounted on the rigid support portion to permit free flexing of the membrane into and out of the cavity, one surface of the membrane communicating with the cavity, the other surface of the membrane being exposed to the exterior of the catheter to receive and flex in response to pressure variations in the organ, and an electrical cable for transmitting from the electrodes to external circuitry electrical signals produced by said flexure.

REFERENCES:
patent: 2949910 (1960-08-01), Brown et al.
patent: 3088323 (1963-05-01), Welbowitz et al.
patent: 3406572 (1968-10-01), Robillard
patent: 3710781 (1973-01-01), Hutchins et al.
patent: 4191193 (1980-03-01), Seo
patent: 4274423 (1981-06-01), Mizuno et al.

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