Multi-spot laser surgical probe using faceted optical elements

Patent metadata

Field	Value
Publication number	US-9387040-B2
Application number	US-201414560645-A
Country	US
Kind code	B2
Filing date	Dec 4, 2014
Priority date	Aug 9, 2011
Publication date	Jul 12, 2016
Grant date	Jul 12, 2016

Abstract

An optical surgical probe includes a handpiece having a metal cannula at a distal end, a light guide within the metal cannula that carries a light beam from a light source through the metal cannula, and a multi-spot generator formed within a distal opening of the metal cannula that seals the distal opening of the metal cannula. The multi-spot generator includes a proximally-facing faceted end surface spaced from a distal end of the light guide that includes at least one facet oblique to a path of the light beam and a ball lens located distal to the faceted end surface. A high-conductivity ferrule surrounds the distal end of the light guide, is in thermal contact with the metal cannula, and includes a side-shield portion extending beyond the distal end of the light guide. The ferrule shields the cannula from a portion of the light beam reflected by the faceted end surface.

First claim

What is claimed is:

1. An optical surgical probe comprising:
a handpiece comprising a metal cannula, the metal cannula located at a distal end of the handpiece;
a light guide extending within the metal cannula, the light guide configured to carry a light beam from a light source through the metal cannula;
a multi-spot generator formed within a distal opening of the metal cannula and configured to seal the distal opening of the metal cannula, the multi-spot generator comprising:
a faceted end surface spaced from a distal end of the light guide facing proximally within the metal cannula, the faceted end surface including at least one facet oblique to a path of the light beam; and
a ball lens located distal to the faceted end surface; and

a high-conductivity ferrule surrounding the distal end of the light guide and being in thermal contact with the metal cannula, the high-conductivity ferrule comprising a side-shield portion extending beyond the distal end of the light guide and configured to shield the cannula from a portion of the light beam reflected by the faceted end surface of the multi-spot generator.

2. The probe of claim 1 , wherein the high-conductivity ferrule is formed of silver.

3. The probe of claim 1 , wherein the high-conductivity ferrule is formed of copper.

4. The probe of claim 1 , wherein the high-conductivity ferrule has a thermal conductivity of at least 372 W/m-K.

Assignees

• Alcon Res Ltd

Inventors

• Smith Ronald T
• Zica Michael Arthur
• Bouch Dustin Jacob

Classifications

• A61F2009/00863

  Retina · CPC title

• A61B1/07

  using light-conductive means, e.g. optical fibres · CPC title

• A61B2018/0091

  Handpieces of the surgical instrument or device · CPC title

• A61B18/201

  with beam delivery through a hollow tube, e.g. forming an articulated arm (through a flexible conduit A61B18/22); Hand-pieces therefor · CPC title

• A61B2018/2277

  with refractive surfaces · CPC title