Medtronic Ps Medical, Inc.

Yi Cai

Yong Feng

Jeff William Bertrand

Steve Han

Zhihua Luo

A valve assembly () configured to maintain fluid flow therethrough at a constant flow rate. The valve assembly () including a flexible flow control member () defining an inner fluid chamber () within the flexible flow control member () and an inlet opening () to the inner fluid chamber (). An outer fluid chamber () is defined between the flexible flow control member () and an inner surface () of a valve housing (). The flexible flow control member () is configured to flex inward and shrink the inner fluid chamber () in response to a pressure decrease in the inner fluid chamber () relative to the outer fluid chamber () resulting from an increase in an inlet flow rate to maintain an outlet flow rate from the valve assembly () at the constant flow rate.

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Shanghai, China

Yi Cai