David S Ware

US Patent:

6736808, May 18, 2004

Filed:

Nov 6, 2000

Appl. No.:

09/707102

Inventors:

Massoud Motamedi - League City TX 77573
David L. Ware - Galveston TX 77550

International Classification:

A61B 1736

US Classification:

606 15, 606 33, 601 2, 607122

Abstract:

A catheter capable of both sensing myocardial electrical activity and delivering ablating energy within myocardial tissue is disclosed. The catheter comprises electrodes on the outer sheath and contains a movable fiber optic cable that can be percutaneously advanced beyond the catheter body and into the myocardium for myocardial heating and coagulation, or modification of tissues responsible for cardiac arrhythmias. The fiber optic tip is designed to diffuse ablating energy radially to ablate a larger volume of tissue than is possible with a bare fiber optic tip. In addition, the tip is treated so that energy is not propagated in a forward direction, thus helping to prevent unwanted perforation of the heart tissue. Also disclosed is a method of cardioprotection from ischemia comprising inducing local hyperthermia in heart tissue.

US Patent:

58240055, Oct 20, 1998

Filed:

Aug 22, 1995

Appl. No.:

8/517961

Inventors:

Massoud Motamedi - League City TX
David L. Ware - Galveston TX

Assignee:

Board of Regents, The University of Texas System - Austin TX

International Classification:

A61B 1736

US Classification:

606 15

Abstract:

A catheter capable of both sensing myocardial electrical activity and delivering ablating energy within myocardial tissue is disclosed. The catheter comprises electrodes on the outer sheath and contains a movable fiber optic cable that can be percutaneously advanced beyond the catheter body and into the myocardium for myocardial heating and coagulation, or modification of tissues responsible for cardiac arrhythmias. The fiber optic tip is designed to diffuse ablating energy radially to ablate a larger volume of tissue than is possible with a bare fiber optic tip. In addition, the tip is treated so that energy is not propagated in a forward direction, thus helping to prevent unwanted perforation of the heart tissue.

US Patent:

61430196, Nov 7, 2000

Filed:

Feb 20, 1998

Appl. No.:

9/026590

Inventors:

Massoud Motamedi - League City TX
David L. Ware - Galveston TX

Assignee:

Board of Regents, The University of Texas System - Austin TX

International Classification:

A61N 5067

US Classification:

607 89

Abstract:

A catheter capable of both sensing myocardial electrical activity and delivering ablating energy within myocardial tissue is disclosed. The catheter comprises electrodes on the outer sheath and contains a movable fiber optic cable that can be percutaneously advanced beyond the catheter body and into the myocardium for myocardial heating and coagulation, or modification of tissues responsible for cardiac arrhythmias. The fiber optic tip is designed to diffuse ablating energy radially to ablate a larger volume of tissue than is possible with a bare fiber optic tip. In addition, the tip is treated so that energy is not propagated in a forward direction, thus helping to prevent unwanted perforation of the heart tissue. Also disclosed is a method of cardioprotection from ischemia comprising inducing local hyperthermia in heart tissue.