Wilton W Webster

US Patent:

20050097737, May 12, 2005

Filed:

Nov 12, 2003

Appl. No.:

10/706024

Inventors:

Wilton Webster - Altadena CA, US
Mario Solis - Glendale CA, US

International Classification:

H01F007/06
H05K013/00

US Classification:

029854000, 029857000, 029605000

Abstract:

A method for attaching a ring electrode to the shaft of the tip section of a catheter comprises passing an electrode lead wire through a lumen in the catheter and out an exit hole in the tip section. The portion of the electrode lead wire extending out of the exit hole is stripped of non-conductive coating and wrapped around the shaft and secured in a clove hitch arrangement. The wrapped electrode lead wire is pulled tight while the material of the shaft is heated to embed the electrode lead wire in the shaft so that its outermost surface is generally flush with the surface of the shaft. The exit hole is sealed and a ring electrode, having a flared skirt is slipped over the shaft to a position over the wrapped electrode lead wire and exit hole. It is then swaged to reduce its outer diameter to about that of the outer diameter of the shaft of the tip section to thereby create a low ohmic connection with the electrode lead wire.

US Patent:

20060184165, Aug 17, 2006

Filed:

Feb 14, 2005

Appl. No.:

11/058434

Inventors:

Wilton Webster - Altadena CA, US
Mario Solis - Glendale CA, US

International Classification:

A61B 18/14

US Classification:

606041000

Abstract:

An irrigated tip electrode design includes a shell generally surrounding a plug which jointly define a chamber that is fed with fluid by a lumen. The fluid is distributed to the outer surface of the tip electrode through fluid passages. The chamber is advantageously isolated from a region of the tip electrode occupied by electrical and/or electromagnetic components in the tip electrode. Lumens occupied by the these components terminate in blind holes that have no communication with the chamber. A method of fabricating includes providing a shell configured from a rod to provide an open interior cavity, sealing and partially filling the cavity with a plug to form a chamber, then forming fluid passages between the cavity and an outer surface of the tip electrode, and providing a lumen through which fluid can enter the chamber and exit therefrom through the fluid passages.

US Patent:

RE345024, Jan 11, 1994

Filed:

Mar 11, 1992

Appl. No.:

7/848827

Inventors:

Wilton W. Webster - Baldwin Park CA

International Classification:

A61N 105

US Classification:

607125

Abstract:

A catheter, which is adapted to be inserted into a body lumen, comprises a symmetrical cylindrical control handle, an elongate tubular catheter body, and a flexible catheter tip having a lumen offset from the axis of the catheter tip. The control handle comprises a housing having a piston chamber at its distal end. A piston is mounted in the piston chamber and is afforded lengthwise movement. The proximal end of the catheter body is fixedly attached to the distal end of the piston. A puller wire is attached to the housing and extends through the piston, through and coaxial with the catheter body and into the offset lumen of the catheter tip where it is attached to the wall of the catheter tip. Lengthwise movement of the piston relative to the housing results in deflection of the catheter tip.

US Patent:

54238820, Jun 13, 1995

Filed:

Jul 6, 1994

Appl. No.:

8/271267

Inventors:

Warren M. Jackman - Edmond OK
Wilton W. Webster - Altadena CA

Assignee:

Cordis-Webster, Inc. - Baldwin Park CA

International Classification:

A61N 105

US Classification:

607122

Abstract:

A cardiovascular electrode catheter for use in arrhythmia ablation procedures has a dumbbell-shaped large-tip electrode having an annular recess or indentation. The annular recess divides the electrode into a ball-shaped distal portion and a generally cylindrical proximal portion. Both the distal and proximal portions of the electrode have a diameter substantially the same as that of the catheter body. The recess enables the electrode to grip the mitral or tricuspid annulus or the atrial or ventricular myocardial wall to improve ablation procedures.

US Patent:

60901047, Jul 18, 2000

Filed:

Jun 7, 1995

Appl. No.:

8/486522

Inventors:

Wilton W. Webster - Altadena CA

Assignee:

Cordis Webster, Inc. - Baldwin Park CA

International Classification:

A61B 1736

US Classification:

606 41

Abstract:

An electrode catheter comprising a tubular body with a distal section having a flexible tubular portion, wherein the flexible tubular distal section is covered by at least one spirally wrapped flat ribbon electrode. Each spirally wrapped flat ribbon electrode has an associated lead wire that can be connected to a source of energy for ablation or connected to a recording system to produce electrophysiologic signals for diagnosis. The preferred catheter is steerable by use of a puller wire connected to the distal section and connected to a handle with means for controlling the movement of the puller wire. In a preferred embodiment, the spirally wound flat ribbon electrode is partially masked with a polyurethane or latex mask.

US Patent:

61834637, Feb 6, 2001

Filed:

Aug 28, 1998

Appl. No.:

9/143426

Inventors:

Wilton W. Webster - Diamond Bar CA

Assignee:

Cordis Webster, Inc. - Diamond Bar CA

International Classification:

A61M 2500

US Classification:

604528

Abstract:

A bidirectional steerable catheter comprises a catheter body, a tip section and a control handle. The catheter body has a tubular wall, proximal and distal ends, and at least one lumen extending therethrough. The tip section comprises flexible tubing having proximal and distal ends and at least one lumen extending therethrough. The proximal end of the tip section is fixedly attached to the distal end of the catheter body. The control handle is mounted at its distal end to the proximal end of the catheter body. The control handle comprises a housing having proximal and distal ends. A distal piston is mounted in the distal end of the housing and fixedly attached to the proximal end of the catheter body. The distal piston is slidably movable relative to the housing. First and second proximal pistons are mounted in the housing proximal to the distal piston.

US Patent:

58430768, Dec 1, 1998

Filed:

Jun 12, 1996

Appl. No.:

8/662360

Inventors:

Wilton W. Webster - Altadena CA
Dean M. Ponzi - Glendora CA

Assignee:

Cordis Webster, Inc. - Diamond Bar CA

International Classification:

A61B 1736

US Classification:

606 41D

Abstract:

The present invention relates to an electrophysiology catheter (an electrode catheter) having an electromagnetic sensor designed internally into the tip portion. The catheter is a size 7 French or 8 French of metal braided construction with preferably three lumens. The catheter has a deflectable tip utilizing an offset lumen with a puller wire, a non compressible coil in the body section and a compressible Teflon sheath in the tip section. The coil is glued to the catheter shaft at both ends of the coil but does not run through the deflectable section, thus deflection of the puller wire which deflects the tip to the coil, keeps the body from compressing and deflecting. The puller wire is soldered to a tip electrode and runs to a control handle. The electromagnetic sensor is mounted internally in the catheter tip by a combination of a hole drilled in the three lumen tip and a hollow bridging that covers the electromagnetic sensor and connects the tip electrode to the catheter shaft. Optionally mounted on the bridging tube are one or more ring electrodes adjacent to the tip electrode.

US Patent:

58938850, Apr 13, 1999

Filed:

Nov 1, 1996

Appl. No.:

8/742352

Inventors:

Wilton W. Webster - Baldwin Park CA

Assignee:

Cordis Webster, Inc. - Baldwin Park CA

International Classification:

A61B 1736

US Classification:

607122

Abstract:

A multi-electrode ablation catheter comprises a plurality of thick-walled gold alloy electrodes mounted on the tip section of an elongated electrophysiology catheter. Each electrode is electrically connected to a switching unit by leads comprising paired copper and constantan wires. The switching unit is electrically connected to an RF generator, a temperature monitor and an ECG monitor. The switching unit enables an operator to switch between a first mode for monitoring ECG and a second mode for delivering RF energy for tissue ablation to a selected electrode and monitoring the temperature of that electrode. The copper wire of the lead delivers RF energy and the copper wire and constantan wire combine to form a thermocouple for temperature monitoring.