Abstract: The invention provides a device for measuring an inside diameter of a body lumen, such as an air passageway. The device includes a flexible catheter having an inflation lumen, a fluid dispenser in fluid communication with the inflation lumen and operable to communicate a measurable fluid volume change with the inflation lumen, and an expandable member in fluid communication with the inflation lumen and having a known relationship between volume and a changeable transverse dimension, the transverse dimension being changeable in response to fluid volume changes of the fluid dispenser and arranged for placement adjacent to opposing portions of an interior wall of the air passageway. The expandable member may be dimensioned for transoral placement into the air passageway, and may comprise a balloon that includes a complaint material.

Abstract: An assembly delivers an intra-bronchial device into an air passageway. The assembly includes a delivery catheter having a deployment lumen with a distal end arranged to receive the intra-bronchial device in a delivery configuration, and arranged to be passed down a trachea and advanced to a location for deployment of the intra-bronchial device, and to deploy the intra-bronchial device by retracting the deployment catheter. The assembly further includes a bronchial device supply tool associated with the distal end, and arranged to carry the intra-bronchial device in a storage configuration and to load the intra-bronchial device in a delivery configuration into the deployment lumen of distal end, and the intra-bronchial device carried in the supply tool in a storage configuration. An embodiment of the supply tool includes a storage portion, a delivery portion, and a configuration-changing portion coupled between the storage portion and the delivery portion.

Abstract: The invention provides a device for measuring an inside diameter of a body lumen, such as an air passageway. The device includes a flexible catheter having an inflation lumen, a fluid dispenser in fluid communication with the inflation lumen and operable to communicate a measurable fluid volume change with the inflation lumen, and an expandable member in fluid communication with the inflation lumen and having a known relationship between volume and a changeable transverse dimension, the transverse dimension being changeable in response to fluid volume changes of the fluid dispenser and arranged for placement adjacent to opposing portions of an interior wall of the air passageway. The expandable member may be dimensioned for transoral placement into the air passageway, and may comprise a balloon that includes a complaint material.

Abstract: A weir valve is disclosed with a solid ceramic weir insert. Optional ceramic pieces are used to line the bore and bonnet opening to protect the exposed inner surfaces of the valve body from fluid in the valve.