Covidien LP

Zhiyong Zhang

William Joseph Whealon

Hussain S Rangwala

John Robert Moberg

Robert VanPelt, Jr

Richard S Kusleika

Thomas John McPeak

Jeffrey H Vogel

Ethan Andrew Guggenheimer

Paul Noffke

Robert W Vanpelt, Jr

Robert W Vanpelt Jr

William J Whealon

William Whealon

Hussain Rangwala

Ethan Andrew Guggenhelmer

Van Pelt

A stent comprising a stent body and a plurality of cells is disclosed. Each cell includes two structural members extending in an undulating pattern. Each structural member includes a plurality of cell segments defining a plurality of peaks and valleys therebetween. A first segment and a second segment defining a first peak, the second segment and a third segment defining a first valley, the third segment and a fourth segment defining a second peak, the fourth segment and a fifth segment defining a second valley, the fifth segment and a sixth segment defining a third peak. The first peak, the second peak and the first valley include a first radius of curvature. The third peak and the second valley include a second radius of curvature. The first radius of curvature is larger than the second radius of curvature.

Stent

An atherectomy catheter directs particles generated by a cutting element into a collection chamber. A lumen configured to direct fluid into the tissue collection chamber.

Material removal device having improved material capture efficiency and methods of use

According to one aspect of the present invention, a fatigue resistant stent includes a flexible tubular structure having an inside diameter, an outside diameter, and a sidewall therebetween and having apertures extending through the sidewall. According to other aspects of the invention, processes for making a fatigue resistant stent are disclosed. According to further aspects of the invention, delivery systems for a fatigue resistant stent and methods of use are provided.

Implants having high fatigue resistance, implant delivery systems, and methods of use

A catheter which includes a cutting element having one or more raised elements is provided. The cutting element has a cup-shaped surface at the distal end that may be smooth and continuous except for the raised elements. The raised elements have a surface that tends to direct cut particles of material towards one or more of the axis of rotation of the cutting element, the catheter axis, or a particle collection chamber. In further aspects of the invention, a cutting element oscillates in a direction roughly parallel to the axis of rotation of the cutting element.

Device for cutting tissue

Stent with varying radius of curvature between struts

An atherectomy catheter directs particles generated by a cutting element into a collection chamber. A paddle attached to the cutting element propels fluid distally in the tissue collection chamber.

According to one aspect of the preset invention, a fatigue resistant stent includes a flexible tubular structure having an inside diameter, an outside diameter, and a sidewall therebetween and having apertures extending through the sidewall. According to other aspects of the invention, processes for making a fatigue resistant stent are disclosed. According to further aspects of the invention, delivery systems for a fatigue resistant stent and methods of use are provided.

Stent with varying radius between struts

An improved atherectomy catheter includes a part for propelling fluid distally in a tissue collection chamber. The part includes a drive shaft having a proximal end and a distal portion, and a propeller attached to the distal portion of the drive shaft.

Growing community of inventors

Edina, MN, United States of America

Zhiyong Zhang