James Carl Matthews

US Patent:

58073892, Sep 15, 1998

Filed:

Oct 18, 1994

Appl. No.:

8/324888

Inventors:

William W. Gardetto - Bedford TX
Millard M. Judy - Dallas TX
James L. Matthews - Dallas TX

Assignee:

MyriadLase, Inc. - Forest Hill TX

International Classification:

A61B 1732

US Classification:

606 17

Abstract:

An operating assembly for use in a liquid operating environment includes a flexible elongated light transmitting fiber having a light reflecting tip mounted thereon for reflecting the light beam laterally. The tip includes a number of features which minimize undesired heating of the tip. The tip is preferably made of solid gold and has a reflecting mirror surface coined on the gold tip. A lateral flushing passageway is disposed through the tip and allows surrounding ambient liquid to flow across the surface of the mirror to aid in cooling the tip and to aid in keeping the mirror clean. The tip is preferably mounted on the fiber by crimping. The tip includes a sufficient volume of material having a sufficient thermal conductivity located between the reflecting mirror and the crimped connection so as to dissipate heat energy which may be generated in the tip and to avoid sufficient heat energy reaching the crimped connection to cause a thermally induced failure of the mechanical attachment of the tip to the fiber at the crimp.

US Patent:

53706498, Dec 6, 1994

Filed:

Jan 13, 1994

Appl. No.:

8/180652

Inventors:

William W. Gardetto - Bedford TX
Millard M. Judy - Dallas TX
James L. Matthews - Dallas TX

Assignee:

MyriadLase, Inc. - Forest Hill TX

International Classification:

A61B 1736

US Classification:

606 17

Abstract:

An operating assembly for use in a liquid operating environment includes a flexible elongated light transmitting fiber having a light reflecting tip mounted thereon for reflecting the light beam laterally. The tip includes a number of features which minimize undesired heating of the tip. The tip is preferably made of solid gold and has a reflecting mirror surface coined on the gold tip. A lateral flushing passageway is disposed through the tip and allows surrounding ambient liquid to flow across the surface of the mirror to aid in cooling the tip and to aid in keeping the mirror clean. The tip is preferably mounted on the fiber by crimping. The tip includes a sufficient volume of material having a sufficient thermal conductivity located between the reflecting mirror and the crimped connection so as to dissipate heat energy which may be generated in the tip and to avoid sufficient heat energy reaching the crimped connection to cause a thermally induced failure of the mechanical attachment of the tip to the fiber at the crimp.

US Patent:

59654333, Oct 12, 1999

Filed:

May 29, 1996

Appl. No.:

8/652696

Inventors:

William W. Gardetto - Bedford TX
John K. Heacox - Mesquite TX
James L. Matthews - Dallas TX

Assignee:

Trans D.A.T.A. Service, Inc. - Houston TX

International Classification:

C12M 300

US Classification:

4352841

Abstract:

A portable perfusion/oxygenation module includes respiratory gas driven dual positive displacement pumps coupled to a stacked membrane oxygenator unit for perfusion fluid oxygenation, a valving manifold to control perfusate flow-direction coupled to an organ chamber designed to enable easy installation of organ and maintenance of intra and extra organ fluid pressure. All of the components and oxygen cylinders are fitted into an insulated chest capable of sustaining perfusion and oxygenation for 24 hours. The perfusion/oxygenation apparatus requires no electrical power, is compact with the total weight including the perfusion fluids and organ weighing less than 50 pounds. With low cumulative weight and the extremely low flow rate of gas required to pump the perfusate, the oxygen supply is capable of sustaining pumping operation for 24 hours without gas cylinder change. The dual pumps have axially aligned, commonly connected pistons using adjustable linkages that provide a simple and robust means of adjusting perfusate volume and pumping rate. No movable membranes, diaphragms or electrical power are required to deliver oxygenated perfusate.