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1. (WO1999013801) BODY FLUID FLOW CONTROL DEVICE

Pub. No.:    WO/1999/013801    International Application No.:    PCT/US1998/018366
Publication Date: Mar 25, 1999 International Filing Date: Sep 4, 1998
IPC: A61F 2/00
A61F 2/06
A61F 2/24
Applicants: ZADNO-AZIZI, Gholam-Reza
FORD, John, S.
MARANO-FORD, April
Inventors: ZADNO-AZIZI, Gholam-Reza
FORD, John, S.
MARANO-FORD, April
Title: BODY FLUID FLOW CONTROL DEVICE
Abstract:
The present invention is a device to provide body fluid flow control in the form of a valve to be located within a duct or passageway. The device is controlled through pressure above a preselected threshold. Bulk resilience about a passageway (26) in a valve body (24) provides the mechanism for controlled flow. One-way valve operation may be provided through a flap or through a pressure differential on the valve body (24) depending upon the direction of flow. A frame structure (30) positioned within a resilient seal includes longitudinally elongate elements (34) which may be of spring material, malleable material or heat recoverable material so as to accomplish an initial insertion state, and an expanded anchoring state. A valve support (26) transitions between the resilient seal portion, and the valve body to insure that the states do not change the threshold opening pressure. Insertion devices may be employed to position, and actuate a change of state of the frame in the body duct or passageway.