Fiber embedded hollow needle for percutaneous delivery of laser energy

• US 9,693,825 B2
• Filed: 02/07/2011
• Issued: 07/04/2017
• Est. Priority Date: 12/14/2008
• Status: Active Grant

• Current Assignee: Claser, Inc.
• Original Assignee: Claser, Inc.
• Inventors: Srinivasan, Pattanam
• Primary Examiner(s): Downey, John R
• Application Number:
  US13/022,178
• Publication Number:
  US 20110196357A1
• Time in Patent Office: 2,339 Days
• Field of Search: 606 2- 19, 607 88- 94
• CPC Class Codes: A61B 18/201 with beam delivery through a hollow tube, e.g. forming an articulated arm through a flexible conduit A61B18/22; Hand-pieces therefor
• CPC Class Codes: A61B 2018/00434 Neural system
• CPC Class Codes: A61B 2018/00577 Ablation
• CPC Class Codes: A61B 2018/2005 with beam delivery through an interstitially insertable device, e.g. needle
• CPC Class Codes: A61B 2018/2227 Hollow fibres
• CPC Class Codes: A61N 2005/0612 using probes penetrating tissue; interstitial probes
• CPC Class Codes: A61N 2005/063 comprising light transmitting means, e.g. optical fibres
• CPC Class Codes: A61N 2005/0662 Visible light
• CPC Class Codes: A61N 5/0601 Apparatus for use inside the body

Abstract

An apparatus facilitating percutaneous delivery of laser energy includes: a hollow needle having a cutting edge at an insertion end thereof; and a laser fiber fixedly embedded within the hollow needle, the embedded laser fiber within the needle being permanently fixed within the hollow needle as one non detachable unit.

Claims

1. An apparatus comprising:

a hollow needle having a central cavity and a beveled cutting edge at the distal insertion end thereof; and

a tubular laser fiber that is inserted into the central cavity of the hollow needle,

wherein the tubular laser fiber is coaxial with an axis of the central cavity and is positioned such that a distal end of the tubular laser fiber is retracted within the central cavity corresponding to a plane defining a beginning of the beveled cutting edge, such that the tubular laser fiber is fully enveloped by an inner wall of the hollow needle surrounding the central cavity,

wherein the tubular laser fiber is directly affixed to the inner wall of the hollow needle whereby the tubular laser fiber and the hollow needle become one non-detachable unit,

whereby the apparatus in the above configuration facilitates unobstructed entry of the apparatus through skin and deeper structures of a human body without the requirement of additional elements, and

wherein the hollow needle is a Quincke-type spinal needle.

2. The apparatus according to claim 1, wherein the laser fiber is non-detachably affixed to the inner wall of the hollow needle with a bioadhesive.

3. The apparatus according to claim 1, wherein the hollow needle has an outer diameter of 0.7 mm or less.

4. The apparatus according to claim 1, wherein the apparatus is coupled to a laser generator that transmits laser energy of a wavelength between 600 nm and 710 nm, and wherein the laser energy is conducted through the laser fiber.

5. The apparatus according to claim 3, wherein the laser fiber has a diameter of 0.5 mm or less.

6. The apparatus according to claim 1, wherein the laser fiber is positioned inside the central cavity of the hollow needle such that a tip of the laser fiber terminates at a plane corresponding to the beveled cutting edge of the hollow needle.

7. The apparatus according to claim 1, wherein the beveled cutting edge of the hollow needle is configured for penetrating skin, and wherein the laser fiber is positioned to terminate before the beveled cutting edge such that obstruction of the hollow needle from penetrating the skin is avoided.

8. The apparatus according to claim 1, wherein the apparatus is configured for insertion of a single laser fiber into the central cavity of the hollow needle.

9. The apparatus according to claim 1, wherein the hollow needle has an external diameter that varies in range between 0.7 mm or 22G and 0.5 mm or 25G.

10. The apparatus according to claim 1, wherein the laser fiber has a diameter of 0.7 mm or less.

11. The apparatus according to claim 2, wherein the bioadhesive includes an industrial standard bioadhesive.

12. The apparatus according to claim 4, wherein the laser energy is delivered to a treatment point through a tip of the laser fiber.

13. The apparatus according to claim 1, wherein the hollow needle includes a single central cavity that is configured to hold a laser fiber.

14. The apparatus according to claim 1, wherein the apparatus provides laser energy treatment to deeper structures of the human body while preventing damage to the deeper structures from laser fiber migration and damage to the laser fiber itself.