Artificial sphincter with variable viscosity fluid-filled...

Details Artificial sphincter with variable viscosity fluid-filled... Artificial sphincter with variable viscosity fluid-filled...

2004-12-29

2008-12-02

Gilbert, Samuel G (Department: 3735)

Surgery

Body inserted urinary or colonic incontinent device or...

Implanted

Reexamination Certificate

active

07458930

ABSTRACT:
Systems and methods for supplementing control of an anatomical sphincter. A collar containing variable viscosity fluid surrounds a portion of an anatomical conduit. The flow of bodily fluids through the anatomical conduit occurs according to the viscosity level of the variable viscosity fluid. Electro-rheologic fluid in the collar liquefies in the absence of an electrical potential difference to render the collar pliable, permitting the anatomical conduit to expand and fluid to flow through the anatomical conduit. Electro-rheologic fluid in the collar solidifies in the presence of an electrical potential difference to render the collar firm, restricting the anatomical conduit from expanding and restricting fluid from passing through the anatomical conduit. A control unit, or battery, operable in response to sensed pressure data or according to an external control unit manipulated by a patient, determines when an electrical potential difference is generated to change the state of the electro-rheologic fluid in the collar. Other fluids may be utilized in the collar, such as magneto-rheologic fluids.

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European Search Report EP 05257902.6 dated Apr. 19, 2006.

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