Probe-and-fire lasers

• US 4,641,650 A
• Filed: 03/11/1985
• Issued: 02/10/1987
• Est. Priority Date: 03/11/1985
• Status: Expired due to Term

• Current Assignee: Eclipse Surgical Technologies, Inc. (Cryolife Incorporated)
• Original Assignee: MCM Laboratories Incorporated
• Inventors: Mok, Walter Y. W.
• Primary Examiner(s): Coven, Edward M.
• Assistant Examiner(s): Hindenburg, Max F.
• Application Number:
  US06/710,431
• Time in Patent Office: 701 Days
• Field of Search: 128/4-8, 128/303.1, 128/395-398, 128/664, 128/665, 219/121 LA, 219/121 LB, 358/78, 370/30
• US Class Current: 606/12
• CPC Class Codes: A61B 18/20 using laser
• CPC Class Codes: A61B 18/245 for removing obstructions in blood vessels or calculi
• CPC Class Codes: A61B 2017/00154 pulsed
• CPC Class Codes: A61B 2018/00636 Sensing and controlling the application of energy

Abstract

Method and apparatus of irradiating a treatment area within a body includes introducing elongated flexible radiation transfer conduit (fiberoptic arrays) into the body cavity with the distal end thereof operatively opposite the treatment area. At the other end of the conduit there is photoelectrically sensed a particular optical characteristic of the treatment area (such as fluorescence) and as long as the particular optical characteristic is sensed there is periodically transmitted laser pulses via the conduit to the treatment site.

Claims

1. A surgical laser system for operating on a treatment site comprising:

a fiber optical means having a proximal end and a distal end positionable in operative proximity to the treatment site;

a treatment laser source optically connected to the proximal end of said fiber optical means;

a diagnostic radiation source connected to the proximal end of said fiber optical means for irradiating the treatment site;

a responding radiation detector means connected to the proximal end of said fiber optical means for generating a control signal when detecting a particular radiation in response to being irradiated by said diagnostic radiation source from the treatment site; and

means for controlling said treatment laser source to operate only when said radiation detector means emits said control signal.

2. The system of claim 1 wherein said fiber optical means comprises a multiple-wavelength beam splitter, a fiber optical device and a multiple-wavelength optical coupler optically coupling said multiple-wavelength beam splitter to said fiber optical device.

3. The system of claim 2 wherein said fiber optical device is a single optical fiber.

4. The system of claim 2 wherein said fiber optical device is a single bundle of optical fibers.

5. The system of claim 1 wherein said fiber optical means comprises first and second fiber optical devices, a multiple-wavelength beam splitter optically coupled to said treatment laser source and to said responding radiation detector, a multiple-wavelength optical coupler optically coupling said multiple-wavelength beam splitter to said first fiber optical device, and another optical coupler optically coupling said diagnostic radiation source to said second fiber optical device.

6. The system of claim 5 wherein at least one of said fiber optical devices is a single optical fiber.

7. The system of claim 5 wherein at least one of said fiber optical devices is a bundle of optical fibers.

8. The system of claim 1 wherein said fiberoptical means is a fiberoptical device having a central fiber optical diagnostic means with a proximal end coupled to said diagnostic radiation source, a receiving fiberoptical array means annularly disposed about said diagnostic means with a proximal end coupled to said detector, and a treatment fiber optical array also annularly disposed about said diagnostic means with one end coupled to said treatment laser source.