Elastomeric prosthetic sphincter

Details Elastomeric prosthetic sphincter Elastomeric prosthetic sphincter

1984-01-27

1986-05-13

Truluck, Dalton L.

Surgery

Truss

Perineal

128DIG25, 604247, 251342, A61B 1900

Patent

active

045879540

ABSTRACT:
An elastomechanical sphincter comprising a prosthetic device for implantation about a patient's lumen such as the urethra for occluding or relaxing the lumen for the treatment of incontinence. The prosthetic sphincter includes a body of elastomeric polymer material configured to define an articulating structure having a normally closed elongated occlusion orifice arranged to embrace the patient's urethra with minimal ischemic interruption of circulatory blood flow. In a first sphincter embodiment, an integrally formed manually manipulable pressure relief cuff extends from a peripheral portion of the articulating structure in such a manner that physical pulling on the pressure relief cuff in a direction transverse to the elongation of the occlusion orifice will open the orifice and thereby open the lumen. The natural elasticity of the device results in occlusion of the lumen upon releasing of the pressure relief cuff. In a second sphincter embodiment, the articulating structure includes a hollow chamber formed therein which is adapted to receive a fluid under pressure from an associated fluid reservoir. As the chamber is filled, the articulating structure expands, such that the occlusion orifice thereof applies a corresponding pressure to occlude the patient's lumen. A pressure relief disk is provided which may be manually operated to permit fluid to be transferred from the chamber to thereby reduce the occlusive pressures being applied by the occlusion orifice, whereby to permit an opening of the patient's lumen thus maximizing the movement of material (e.g. blood) therethrough.

REFERENCES:
patent: 274447 (1883-03-01), Kennish
patent: 2521426 (1944-03-01), Heaton
patent: 2533924 (1950-12-01), Foley
patent: 3758073 (1971-10-01), Shulte
patent: 3788327 (1974-01-01), Donowitz et al.
patent: 3903894 (1975-09-01), Rosen et al.
patent: 3926175 (1975-12-01), Allen et al.
patent: 4224934 (1980-09-01), Scott et al.
patent: 4340061 (1982-07-01), Kees, Jr. et al.
patent: 4428365 (1984-01-01), Hakky

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