James T Swift

US Patent:

52236897, Jun 29, 1993

Filed:

Apr 29, 1991

Appl. No.:

7/692987

Inventors:

Mark J. Cowell - San Carlos CA
Thomas H. McGaffigan - Half Moon Bay CA
James C. Swift - Menlo Park CA

Assignee:

Metcal, Inc. - Menlo Park CA

International Classification:

B23K 100

US Classification:

219 8522

Abstract:

A peak power measurement as a function of various system parameters is made to determine completion of a proper heating operation; in one embodiment by measuring peak power delivered to a level as a function of temperature within a specified time period for a specific load; and in another embodiment by the plot of peak power and ramp-up and ramp-down levels as a function of time.

US Patent:

20220354578, Nov 10, 2022

Filed:

May 4, 2022

Appl. No.:

17/736894

Inventors:

- Carlsbad CA, US
Eric Schultheis - San Clemente CA, US
Rachel Lynn Troutman - Carlsbad CA, US
James Dee Swift - San Clemente CA, US

International Classification:

A61B 18/24
A61B 18/26
A61B 18/04

Abstract:

A catheter system for treating a treatment site within or adjacent to a vessel wall or a heart valve, includes a light source, a balloon, a light guide and an optical analyzer assembly. The light source generates first light energy. The balloon is positionable substantially adjacent to the treatment site. The balloon has a balloon wall that defines a balloon interior that receives a balloon fluid. The light guide receives the first light energy and guides the first light energy in a first direction from a guide proximal end toward a guide distal end positioned within the balloon interior. The optical analyzer assembly optically analyzes a second light energy from the light guide that moves in a second direction that is opposite the first direction. The optical analyzer assembly includes a safety shutdown system to inhibit the first light energy from being received by the guide proximal end of the light guide.