Prosthetic sphincter devices

Details Prosthetic sphincter devices Prosthetic sphincter devices

1986-05-12

1988-01-26

Apley, Richard J.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Vocal cord

128DIG25, 128 1R, A61F 208

Patent

active

047215097

ABSTRACT:
A prosthetic sphincter device in the form of a closed pressure-fluid system operable by the recipient to control a body duct comprises a pressure-fluid reservoir (10), an inflatable duct-obviator (8) typically of cuff form, a pump (9) operable to deflate the cuff, and a control mechanism (1, 14, 15) operable normally to hold the cuff inflated at a preset pressure to close the duct, the mechanism being adjustable in situ post-operatively to vary the preset pressure. In a preferred form the control mechanism includes a valve (1) communicating the reservoir and cuff, and a preset pressure-fluid source (14) connected to hold the valve normally closed, this source including a self-sealing septum (16) allowing preset pressure adjustment by injection. The valve preferably has a through passageway defined at least in part by a flexible wall (6) externally subject to the preset pressure.

REFERENCES:
patent: 3416724 (1968-12-01), Lenkei
patent: 3744063 (1973-07-01), McWhorter
patent: 3750194 (1973-08-01), Summers
patent: 3759289 (1973-09-01), DeWall
patent: 4408597 (1983-10-01), Tenney
patent: 4412530 (1983-11-01), Burton
patent: 4417567 (1983-11-01), Trick
patent: 4419985 (1983-12-01), Trick
patent: 4549531 (1985-10-01), Trick
patent: 4571749 (1986-02-01), Fischell
patent: 4587954 (1986-05-01), Haber

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