Solid state sphincter myometers

Details Solid state sphincter myometers Solid state sphincter myometers

1994-08-11

1996-07-09

Hindenburg, Max

Surgery

Truss

Pad

128780, A61B 500

Patent

active

055335152

ABSTRACT:
A system for providing real-time measurements of constriction pressure applied by the inner surface of a body lumen, such as a sphincter, includes a probe comprising an elongated core member having a matrix of pressure transducer regions distributed over the surface of the elongated core member. The preferred matrix of pressure transducer regions is addressed by a first inner array of substantially parallel electrically conductive strips substantially conformed circumferentially to at least a portion of the elongated core member, the first array being disposed in overlapping relationship with a second outer array of substantially parallel electrically conductive strips, and substantially conformed axially to at least the same portion of the elongated core member, so as to provide a matrix of intersection regions. Each pressure transducer region is disposed at a corresponding intersection region, and is in electrical contact with both a electrically conductive strip of the first array, and a electrically conductive strip of the second array. In the preferred embodiment the strips of the outer array are mechanically decoupled from one another by axially-directed slits to allow each individual strip to respond independently under hydrostatically applied pressures. A method of making the probe from commercially available materials is also disclosed.

REFERENCES:
patent: 4561450 (1985-12-01), Byrant
patent: 4566465 (1986-01-01), Arhan et al.
patent: 4809710 (1989-03-01), Williamson
patent: 4815472 (1989-03-01), Wise et al.
patent: 4873990 (1989-10-01), Holmes et al.
patent: 4887610 (1989-12-01), Mittal
patent: 4949729 (1990-08-01), Haski
patent: 5109870 (1992-05-01), Silny et al.
patent: 5117840 (1992-06-01), Brenman et al.
patent: 5181522 (1993-01-01), McEwen

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