Dual-mode valve pressure regulating system
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United States of America Patent
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Nov 1, 1983
Grant Date -
N/A
app pub date -
Sep 21, 1981
filing date -
Sep 21, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A prosthetic sphincter for controlling urinary incontinence is provided with a dual-mode pressure regulating system designed to establish continence yet prevent damage to the bladder from excessive pressures. In a conventional four-valve system, the valve controlling output of the deflation pump is replaced by a two-stage valve unit having a cracking valve and a holding valve in parallel relationship, both valves permitting only one-way flow with the pressure required to open the holding valve. A flow resistor is placed in parallel with the cracking valve and in series with the holding valve.
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