Medtronic Vascular, Inc.

Medtronic Ventor Technologies Ltd.

Kevin O'Sullivan

John Gallagher

Mark Casley

Paul Mearns

Pat Duane

Niall F Duffy

Ellen Roche

A system includes an elongate catheter having a self-expanding frame disposed at the distal end of the catheter. The frame includes a plurality of longitudinal struts defined by parallel slots. The frame may be constrained into a radially compressed configuration for delivery to a treatment site. A helical balloon is mounted about the frame. Upon release from the constraining mechanism, the frame returns to a heat-set radially expanded configuration to initiate dilation of a treatment site in a patient. Inflating the balloon around the expanded frame further expands the initial radial dilation of the site. Proximal and distal ends of the slots are unobstructed by the balloon to permit flow of a fluid through the slots and through a lumen defined by an interior surface of the balloon when the frame is in the radially expanded configuration.

Perfusion dilation catheter system and methods of use

A method for loading a prosthesis onto a delivery system includes passing a distal end of a delivery system through a first open end and a second open end of a reducing member. The method includes seating the prosthesis in a piston member of a cap by contacting a first end of the prosthesis with a first surface of the piston member and by contacting a portion of a side of the prosthesis with at least one side wall extending from the periphery of the first surface. Additionally, the method includes inserting the distal end of the delivery system into a center of the prosthesis and an opening defined by the piston member. And the method includes advancing the cap towards a reducing member such that a portion of the prosthesis seated in the piston member advances along an inner surface of the conical wall of the reducing member.

Devices and methods for loading a prosthesis onto a delivery system

An arteriovenous shunt assembly including a shunt having a hollow bore between open first and second ends thereof and a valve slidably disposed through the hollow bore. The valve includes means for retaining the valve in a closed position or in any of various selected open positions that provide corresponding different rates of blood flow through the shunt assembly. In some embodiments, the AV shunt assembly is self-expandable from a collapsed tow-profile configuration employed during transluminal delivery. The valve position in the hollow bore may be adjusted in vivo by inflating a catheter balloon in a blood vessel to bear against an end of the valve. Methods for using the shunt assembly are also disclosed.

Arteriovenous shunt having a moveable valve

In an embodiment, a device for loading a prosthesis onto a delivery system comprises a cap and a reducing member. The cap has a piston member that seats a prosthesis. The piston member has at least one side wall configured to contact a portion of the side of the prosthesis seated therein. The reducing member has a conical wall, a first open end, and a second open end. The first open end is configured to receive the piston member. The reducing member reduces an external dimension of at least a portion of the prosthesis seated in the piston member as the prosthesis is moved along an inner surface of the conical wall.

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Tralee, Ireland

Kevin O'Sullivan