Surgical laser tool

Patent metadata

Field	Value
Publication number	US-10568692-B2
Application number	US-201314440204-A
Country	US
Kind code	B2
Filing date	Nov 7, 2013
Priority date	Nov 9, 2012
Publication date	Feb 25, 2020
Grant date	Feb 25, 2020

Abstract

A surgical laser tool for performing a laser procedure at a treatment site is provided. The surgical laser tool includes a laser source, a fiber catheter, and an analytical device. The laser source is configured to generate laser energy. The fiber catheter is configured to (i) acquire optical feedback from the treatment site and (ii) deliver the laser energy to the treatment site. The analytical device is configured to analyze reflected light from the treatment site in order to allow a physician to perform a diagnosis on the treatment site.

First claim

What is claimed is:

1. A tool comprising:
a fiber catheter including a proximal end, a distal end, and a plurality of channels extending therebetween;
a laser source configured to generate a laser energy;
a light source configured to generate a diagnostic light;
a first fiber disposed in a first channel of the plurality of channels, the first fiber being configured to: (i) deliver the diagnostic light to a treatment site from the light source in a first direction parallel to a longitudinal axis of the fiber catheter, and (ii) receive optical feedback from a portion of the diagnostic light reflected from the treatment site;
a second fiber disposed in a second channel of the plurality of channels, the second fiber being configured to deliver the laser energy to the treatment site from the laser source in a second direction parallel to the longitudinal axis of the fiber catheter;
an actuator configured to vibrate a distal end of the first fiber within the first channel; and
an analytical device configured to analyze the optical feedback.

2. The tool of claim 1 , wherein each of the first and second fibers comprises at least one optical fiber, and the actuator is responsive to one of electricity and a magnetic force.

3. The tool of claim 1 , further comprising one or more optical components configured to:
couple the second fiber to the laser source;
couple the first fiber to the light source and the analytical device; and
modify the optical feedback prior to receipt by the analytical device.

4. The tool of claim 1 , wherein the diagnostic light source includes one of a white light source, an LED light source, a pulsed laser source, a laser source, and a broad band light source.

5. The tool of claim 1 , wherein the analytical device includes one of a spectrometer, a photodetector, and a photomultiplier tube.

6. The tool of claim 1 , wherein the first channel is separate from the second channel.

7. The tool of claim 6 , wherein the first fiber is vibrated independent of the second fiber.

8. The tool of claim 1 , wherein the laser source is configured to generate the laser energy according to laser parameters, and the analytical device is configured to output a control signal configured to determine the laser parameters.

9. A system comprising:
the tool of claim 1 , and
a scope including at least one working channel configured to deliver the distal end of the fiber catheter to the treatment site.

10. A method comprising the steps of:
positioning a distal end of a tool adjacent a treatment site, the tool comprising:
a laser source configured to generate a laser energy;
a light source configured to generate a diagnostic light;
a fiber catheter including:
a first fiber configured to: (i) deliver the diagnostic light to the treatment site in a first direction parallel to a longitudinal axis of the fiber catheter, and (ii) receive a portion of the diagnostic light reflected from the treatment site, and
a second fiber configured to deliver the laser energy to the treatment site in a second direction parallel to the longitudinal axis of the fiber catheter;

oscillating a distal end of the first fiber relative to the fiber catheter in a direction transverse to the longitudinal axis of the fiber catheter;
discharging the diagnostic light from the light source through the distal end of the first fiber onto the treatment site;
delivering, to an analytical device, optical feedback received from the portion of the diagnostic light reflected from the treatment site; and
analyzing, with the analytical device, the optical feedback.

11. The method of claim 10 , wherein the light source includes one of a white light source, an LED light source, a laser source, and a broad band light source.

12. The method of claim 10 , wherein the analytical device includes one of a spectrometer, a photodetector, and a photomultiplier tube.

13. A tool comprising:
a laser source configured to generate a laser energy;
an imaging light source configured to generate an imaging light;
a fiber catheter comprising:
a first channel including a first fiber configured to: (i) deliver the imaging light to a treatment site in a first direction parallel to a longitudinal axis of the fiber catheter, and (ii) receive optical feedback from a portion of the imaging light reflected from the treatment site, and
a second channel including a second fiber configured to discharge the laser energy to the treatment site in a second direction parallel to the longitudinal axis of the fiber catheter;

an actuator configured to vibrate a distal end of the first fiber independent of a distal end of the second fiber along an axis transverse to the longitudinal axis of the fiber catheter;
at least one optical device for coupling the first fiber to the imaging light and the second fiber to the laser source; and
an analytical device configured to analyze the optical feedback.

14. The tool of claim 13 , wherein the first fiber comprises a plurality of optical fibers.

15. The tool of claim 13 , wherein the imaging light source includes one of a broadband light source, a pulsed laser source, and a narrow band light source.

16. The tool of claim 13 , wherein the analytical device includes one of a spectrometer, a photodetector, and a photomultiplier tube.

17. A method comprising the steps of:
positioning a distal end of the fiber catheter of claim 13 adjacent the treatment site;
powering the actuator to vibrate the distal end of the first fiber;
discharging the imaging light through the distal end of the first fiber onto the treatment site while the actuator is powered;
delivering the optical feedback to the analytical device through the first fiber; and
analyzing the optical feedback with the analytical device.

18. The method of claim 17 , further comprising the step of processing, with a processor circuit, the optical feedback to form an image of the treatment site.

19. The method of claim 17 , wherein the laser source is configured to generate the laser energy according to laser parameters, and the method further comprises the steps of:
outputting, with the analytical device, a control signal configured to determine the laser parameters; and
discharging the laser energy through the second fiber according to the laser parameters.

Assignees

• Ams Res Llc
• Boston Scient Scimed Inc

Inventors

• Wang Hui
• Chia Wen-Jui Ray

Classifications

• A61B5/0084

  for introduction into the body, e.g. by catheters (A61B5/1459 takes precedence) · CPC title

• A61B5/0075

  by spectroscopy, i.e. measuring spectra, e.g. Raman spectroscopy, infrared absorption spectroscopy (A61B5/0071 takes precedence) · CPC title

• A61B2017/00057

  Light · CPC title

• A61B18/24 Primary

  with a catheter (A61B18/26, A61B18/28 take precedence) · CPC title