OCT vitrectomy probe

Patent metadata

Field	Value
Publication number	US-10070784-B2
Application number	US-201414890035-A
Country	US
Kind code	B2
Filing date	May 12, 2014
Priority date	May 10, 2013
Publication date	Sep 11, 2018
Grant date	Sep 11, 2018

Abstract

Disclosed herein are vitrectomy probes configured for use with optical coherence tomography.

First claim

The invention claimed is:

1. A vitrectomy probe for insertion into tissue of a subject, comprising:
a beam steering system for receiving a light beam from a sample arm optical fiber of an optical coherence tomography instrument and comprising
a mirror, and
an actuator coupled to the mirror that directs angular movement of a probe beam exiting the beam steering system in two dimensions;

a fundus illumination system for receiving a beam of white light from a white light source via a multimode fiber;
a light beam delivery system for illuminating a biological tissue of a subject with the probe beam from the beam steering system and illuminating the biological tissue of the subject with white illumination light from the fundus illumination system with an extended angle;
a probe needle shaft small enough to fit through scleral incisions made for vitreoretinal surgery; and
a dichroic mirror positioned to combine the probe beam and the white illumination light.

2. The vitrectomy probe of claim 1 wherein the beam steering system comprises a first collimating lens and an electrowetting lens.

3. The vitrectomy probe of claim 1 wherein the fundus illumination system comprises a first lens and a second lens, wherein the first lens is a collimating lens.

4. The vitrectomy probe of claim 1 wherein the beam delivery system comprises a first lens and a second lens, wherein the second lens is a GRIN lens and wherein the GRIN lens is configured to direct the probe beam to the eye of the subject and collect reflected light.

5. The vitrectomy probe of claim 4 , wherein the GRIN lens has a length of at least 20 mm (4 pitches).

6. The vitrectomy probe of claim 4 wherein the GRIN lens has a diameter of 0.5 mm or less.

7. The vitrectomy probe of either claim 4 or claim 6 , wherein the beam delivery system further comprises a third lens, and wherein the first lens and third lens are configured to relay a surface of a microelectromechanical system mirror to the entrance of the GRIN lens.

8. The vitrectomy probe of claim 1 , wherein the biological tissue comprises a retina of the subject.

9. The vitrectomy probe of claim 1 , wherein the dichroic mirror reflects the probe beam and transmits the white illumination light from the fundus illumination system.

Assignees

• Univ Oregon Health & Science
• Fujimoto James
• Lu Chen
• Huang David
• Wang Yimin
• Wilson David
• Stout J Timothy

Inventors

• Huang David
• Wang Yimin
• Wilson David
• Stout J Timothy
• Fujimoto James
• Lu Chen

Classifications

• G02B26/0833

  the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD (G02B26/0825 takes precedence; micromechanical devices in general B81B) · CPC title

• G01B9/02091

  Tomographic interferometers, e.g. based on optical coherence · CPC title

• A61B5/0066

  Optical coherence imaging · CPC title

• G02B27/30

  Collimators · CPC title

• G02B3/0087

  with index gradient · CPC title