Covidien LP

Other

Lake Region Manufacturing, Inc.

William Joseph Whealon

Zhiyong Zhang

Hussain S Rangwala

John Robert Moberg

Thomas John McPeak

Robert VanPelt, Jr

Richard S Kusleika

Ethan Andrew Guggenheimer

Darren G Doud

Phyllis Yuen

Kee S Lee

Christopher B Brodeur

Alex Tzutsan Yang

Robert W Vanpelt, Jr

Bradley E Steele

Chris Minar

Andrew O Senn

Cassandra Morris

Bruce Rittenour

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

The present invention provides an atherectomy catheter which has a cutting element that is able to cut both soft tissue and hard tissue, and methods of cutting material from a blood vessel lumen using a rotating cutting element. The cutting element has a sharp cutting edge that surrounds a cup-shaped surface and at least one surface of abrasive material. The cup-shaped surface directs the cut material into a tissue chamber. The cutting edge and the cup-shaped surface together are well suited to cut and remove relatively soft tissue from the blood vessel. The abrasive material surface in combination with the cutting element is well suited to abrade and remove hard material from the blood vessel.

Methods and devices for cutting and abrading tissue

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 tissue-removing catheter includes a catheter body and a tissue-removing head. The catheter body has an annular shearing blade at the distal end thereof. The tissue-removing head is at the distal end of the catheter body and is configured to rotate about an head axis relative to the catheter body, and reciprocate along the head axis relative to the catheter body between proximal and distal positions.

Tissue-removing catheter with reciprocating tissue-removing head

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

Various devices, systems, and methodologies are disclosed for delivering a chemical agent to tissue, e.g., for delivering an anti-restenotic agent to tissue comprising a wall of a blood vessel. In one embodiment of the disclosure, a delivery member is disclosed comprising a body that includes a plurality of discrete, separable sections, wherein each section includes a housing defining an internal cavity, and a penetrating member that extends from the housing.

Directional subintimal access for chemical agent delivery

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.

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.

Methods and devices for cutting tissue

Medical devices that include on at least some portion thereof an aromatic polyimide of the structure: wherein R is a tetravalent aromatic radical, preferably containing at least one ring of six carbon atoms, said ring characterized by benzenoid unsaturation, the four carbonyl groups being attached directly to separate carbon atoms in a ring and each pair of carbonyl groups being attached to adjacent carbon atoms in a ring of the R radical; and wherein R' is a divalent benzenoid radical selected from the group consisting of wherein R&#x2033; is selected from the group consisting of an alkylene chain having 1-3 carbon atoms, R&#x2032;&#x2033; and R&#x2033;&#x2033; are selected from the group consisting of alkyl and aryl. In one embodiment the medical device is a coated lead body. Coated guide wires are a further embodiment. Methods of application are a further embodiment.

Growing community of inventors

Chaska, MN, United States of America

William Joseph Whealon