Patent ID: 8474460
Filing Date: 2013-07-02
Classification: A61B,A61F

Abstract:
1. A flow control device suitable for implanting in a bronchial passageway, comprising: a valve element comprising a first lip and a second lip, wherein the first and second lips are configured to transition the valve element between an open configuration that permits air flow in an expiratory direction and a closed configuration that blocks air flow in the inspiratory direction, wherein the first and second lips are configured to be substantially parallel to maintain an opening in a default state such that the first and second lips move away from one another to increase the size of the opening to a size larger than the size of the opening in the default state when exposed to air flow in the expiratory direction and the valve element transitions toward the closed configuration when exposed to air flow in the inspiratory direction; wherein the valve element is in the default state when there is no pressure differential across the valve.