Medical laser device and related methods

Patent metadata

Field	Value
Publication number	US-11054596-B2
Application number	US-202016842154-A
Country	US
Kind code	B2
Filing date	Apr 7, 2020
Priority date	Oct 11, 2016
Publication date	Jul 6, 2021
Grant date	Jul 6, 2021

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 first portion that includes one or more of dimples, bumps, or internally dispersed particles and a second portion that is free of dimples, bumps, or internally dispersed particles, wherein the second 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 second 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 plurality of dimples, bumps, or internally dispersed particles are configured to scatter portions of energy being delivered through the optical fiber from the energy source.

4. The laser delivery device of claim 1 , wherein the first portion of the capillary includes a plurality of dimples or bumps on an outer circumferential surface of the capillary.

5. The laser delivery device of claim 1 , wherein the first portion of the capillary includes a plurality of dimples or bumps on an inner circumferential surface of the capillary.

6. The laser delivery device of claim 1 , wherein the first portion of the capillary includes the dimples, and wherein the dimples are circular dimples on at least a portion of an outer circumferential surface of the first portion.

7. The laser delivery device of claim 6 , wherein the dimples on the first portion of the capillary are formed by melting with a CO2 laser in a pulsed mode.

8. The laser delivery device of claim 7 , wherein the second portion of the capillary is fused to a proximal portion of the optical fiber with the CO2 laser.

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

10. The laser delivery device of claim 9 , wherein the proximal end of the optical fiber is configured to be coupled to a holmium laser.

11. A medical device, comprising:
an optical fiber, including a proximal portion configured to be coupled to an energy source to deliver energy 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 plurality of dimples, bumps, or internally dispersed particles configured to scatter portions of the energy, and
wherein the capillary is fused to the optical fiber over at least a portion of an overlap of the capillary and the optical fiber.

12. The medical device of claim 11 , wherein the capillary includes a portion that is free of the plurality of dimples, bumps, or internally dispersed particles, and wherein the capillary is fused to the optical fiber over at least some of the portion that is free of the plurality of dimples, bumps, or internally dispersed particles.

13. The medical device of claim 12 , wherein the capillary is fused to the optical fiber over at least some of the portion that is free of the plurality of dimples, bumps, or internally dispersed particles with a laser.

14. The medical device of claim 11 , wherein the capillary is formed of glass, silica, or sapphire.

15. The medical device of claim 11 , further comprising a ferrule surrounding at least a portion of the capillary, wherein at least a portion of the ferrule is spaced apart from the capillary to form a gap between the portion of the ferrule and the capillary.

16. A medical device, comprising:
a fiber extending from a proximal portion to a distal portion; and
a capillary at least partially surrounding the proximal portion of the fiber,
wherein the capillary includes a plurality of dimples, bumps, or internally dispersed particles on at least a portion of the capillary, and
wherein the capillary includes a portion at a proximal portion of the capillary that is free of the dimples, bumps, or internally dispersed particles, and
wherein the capillary is fused to the optical fiber over at least a portion of an overlap of the fiber and the portion of the capillary that is free of the dimples, bumps, or internally dispersed particles.

17. The medical device of claim 16 , wherein the plurality of dimples, bumps, or internally dispersed particles are configured to scatter portions of energy being delivered through the fiber.

18. The medical device of claim 16 , wherein the capillary is formed of glass, silica, or sapphire.

19. The medical device of claim 16 , wherein the capillary includes the bumps, and wherein the bumps are on at least a portion of an outer circumferential surface of the capillary.

20. The medical device of claim 16 , further comprising a ferrule surrounding at least a portion of the capillary, wherein at least a portion of the ferrule is spaced apart from the capillary to form a gap between the portion of the ferrule and the capillary.

Assignees

• Boston Scient Scimed Inc

Inventors

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

Classifications

• A61N5/067

  using laser light · CPC title

• G02B6/02

  Optical fibres with cladding {with or without a coating} · CPC title

• G02B2006/4297

  having protection means, e.g. protecting humans against accidental exposure to harmful laser radiation · CPC title

• G02B6/02147

  Point by point fabrication, i.e. grating elements induced one step at a time along the fibre, e.g. by scanning a laser beam, arc discharge scanning (G02B6/02133 and G02B6/02142 take precedence) · CPC title

• G02B6/02342

  characterised by cladding features, i.e. light confining region · CPC title