Medical laser device and related methods

Patent metadata

Field	Value
Publication number	US-10649162-B2
Application number	US-201816210048-A
Country	US
Kind code	B2
Filing date	Dec 5, 2018
Priority date	Oct 11, 2016
Publication date	May 12, 2020
Grant date	May 12, 2020

Abstract

A laser delivery device may include a connector portion at a proximal end of the laser delivery device and an optical fiber connecting the connector portion to a distal end of the laser delivery device. The connector portion may include a capillary at least partially surrounding a proximal portion of the optical fiber, and the capillary may include dimples on at least a portion of a circumferential surface thereof.

First claim

We claim:

1. A laser delivery device, comprising:
an optical fiber, including a proximal portion configured to be coupled to an energy source and a distal portion opposite the proximal portion; and
a capillary surrounding at least a portion of the optical fiber and including a proximal portion and a distal portion,
wherein the capillary includes a dimpled portion and a dimple free portion, wherein the dimple free portion is at the proximal portion of the capillary, and
wherein the capillary is fused to the optical fiber over at least a portion of an overlap of the dimple free portion of the capillary and the optical fiber.

2. The laser delivery device of claim 1 , wherein the capillary is formed of glass.

3. The laser delivery device of claim 1 , wherein the dimpled portion includes a plurality of circular dimples on at least a portion of an outer circumferential surface thereof.

4. The laser delivery device of claim 3 , wherein the dimples are not included on the outer circumferential surface of the distal portion of the capillary.

5. The laser delivery device of claim 3 , wherein a portion of the outer circumferential surface of the capillary includes projections.

6. The laser delivery device of claim 3 , wherein the dimples are formed by melting with a CO 2 laser in a pulsed mode, and wherein the dimple free portion of the capillary is fused to the proximal end of the optical fiber with the CO 2 laser.

7. The laser delivery device of claim 1 , wherein the proximal portion of the optical fiber is configured to be coupled to a laser source.

8. The laser delivery device of claim 7 , wherein the proximal portion of the optical fiber is configured to be coupled to a holmium laser.

9. A laser delivery device, including:
an optical fiber, including a proximal portion configured to be coupled to an energy source and a distal portion configured to emit energy; and
a capillary at least partially surrounding a portion of the optical fiber,
wherein the capillary includes dimples on at least a portion of a circumferential surface thereof, wherein the capillary includes a proximal portion and a distal portion, wherein the proximal portion of the capillary is configured to surround at least a portion of the proximal portion of the optical fiber, and wherein the capillary includes a dimple free portion at the proximal portion, and
wherein the capillary is fused to the optical fiber over at least a portion of an overlap of the dimple free portion of the capillary and the optical fiber.

10. The laser delivery device of claim 9 , wherein the dimples are included on an outer circumferential surface of the capillary.

11. The laser delivery device of claim 9 , wherein the proximal portion of the optical fiber is configured to be coupled to a laser source to delivery laser energy from the laser source to the distal end of the optical fiber.

12. An optical device, comprising:
an optical fiber extending from a proximal portion to a distal portion; and
a capillary at least partially surrounding the proximal portion of the optical fiber,
wherein the capillary includes a plurality of circular dimples on at least a portion of an outer circumferential surface thereof, and
wherein the capillary includes a dimple free portion at a proximal portion of the capillary, and
wherein the capillary is fused to the optical fiber over at least a portion of an overlap of the dimple free portion of the capillary and the optical fiber.

13. The optical device of claim 12 , wherein the dimples are circular indentations on at least a portion of an outer circumferential surface of the capillary and extend between 1 and 50 micrometers through a radial thickness of the capillary from the outer circumferential surface of the capillary.

14. The optical device of claim 12 , wherein the dimple free portion includes between 10 and 30 percent of the capillary.

15. The optical device of claim 12 , wherein the capillary is fused to the optical fiber over the dimple free portion of the capillary.

16. The optical device of claim 12 , wherein the proximal portion of the optical fiber is configured to be coupled to a laser source to delivery laser energy from the laser source to a distal end of the optical fiber.

Assignees

• Boston Scient Scimed Inc

Inventors

• Peng Steven Yihlih
• Chia Wen-Jui Ray
• Hasenberg Thomas Charles

Classifications

• G02B6/0006

  Coupling light into the fibre (in general G02B6/4298) · CPC title

• G02B6/4296 Primary

  coupling with sources of high radiant energy, e.g. high power lasers, high temperature light sources · CPC title

• A61B18/26

  for producing a shock wave, e.g. laser lithotripsy · CPC title

• G02B6/02066

  Gratings having a surface relief structure, e.g. repetitive variation in diameter of core or cladding · CPC title

• A61B2018/00505

  Urinary tract · CPC title