Ep Technologies, Inc.

Michael Idaomi

Russell B Thompson

Russell A Houser

Gloria Alvarez

David K Swanson

David L McGee

Thomas M Bourne

Fernando Pumares

Jamil Ahmad

Simplicio Velilla

A sleeve assembly for use in the transition region of a catheter between a relatively stiff catheter body and a less stiff distal catheter region mediates the difference in stiffness between these two catheter regions.

Transition sleeve assembly for catheters

A catheter having an elongated polymeric body with hollow encircling ring electrodes thereon and a method of forming the same are provided by the invention. Ring electrodes are each connected to an external electrical circuit by wires extending through the lumen, the wires each passing through an aperture through a wall of the body and being connected to an interior surface of the ring electrode. The tubular body of the catheter is expanded into a tight interference fit with the interior surfaces of the ring electrodes by heating the body to a temperature approaching its glass transition temperature to permit relief of internal stresses.

Catheter having ring electrodes secured thereon

An electrode tip assembly for a catheter is bendable under the control of the user. The distal tip portion of the assembly is progressively less resistant to bending than the remaining portions. The variable stiffness is provided by tapering the width or thickness of a bendable spring component or otherwise providing a progressive change in bending characteristics by notching, dimpling or stepping the thickness of the spring.

Catheter tip assembly

Method of securing ring electrodes onto catheter

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Sunnyvale, CA, United States of America

Michael Idaomi