Convex contact probe for the delivery of laser energy

Patent metadata

Field	Value
Publication number	US-9700461-B2
Application number	US-201514750729-A
Country	US
Kind code	B2
Filing date	Jun 25, 2015
Priority date	Jun 27, 2014
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

Systems, devices, and methods for treating a glaucomatous eye are provided. Embodiments may provide a treatment probe for treating an eye of a patient. The treatment probe may have an elongate body with a contact surface at a distal end of the elongate body. A treatment fiber or light source may be housed in the treatment probe and may be configured to direct treatment energy from the contact surface. The contact surface may be configured to couple to a surface of the eye to deliver the energy into the target area. In many embodiments the contact surface may have a convex configuration with a rounded outer shape and edge that facilitates the sweeping of the probe surface across the eye during treatment delivery. In some embodiments the probe may be swept in arc motions while delivering treatment energy to the eye.

First claim

What is claimed is:

1. A laser treatment method for an eye of a patient, the eye having a sclera and a pars plana posterior to a pars plicata and a pre-laser treatment intraocular pressure, the method comprising:
providing a treatment probe for treating the eye of the patient, the treatment probe including:
an elongate body defining a handle having a proximal end and a distal end;
a contact member mounted to the distal end of the handle, the contact member including a convex contact surface configured for slidingly engaging a surface of the eye; and
a treatment fiber extending along the elongate body and configured for delivering a treatment laser to the eye from a distal end of the treatment fiber, the distal end of the treatment fiber protruding distally of the convex contact surface;
placing the convex contact surface of the treatment probe on the surface of the eye of the patient;
sliding the convex contact surface of the probe across the surface of the eye along a treatment region of the eye that is posterior to the limbus of the eye; and
delivering the treatment laser to the treatment region of the eye while sliding the convex contact surface of the probe across the surface of the eye.

2. The laser treatment method of claim 1 , further comprising:
maintaining the protruding fiber in sliding contact with the sclera at a desired distance posterior from the limbus of the eye while sliding the convex contact surface of the probe across the surface of the eye; and
delivering the treatment laser.

3. The laser treatment method of claim 2 , wherein sliding the convex contact surface comprises sliding the convex contact surface in an arc motion while maintaining the alignment of the treatment probe with the treatment region of the eye.

4. The laser treatment method of claim 3 , wherein sliding the convex contact surface comprises sliding in a less than 180° arc motion on a superior region of the eye.

5. The laser treatment method of claim 4 , wherein sliding the convex contact surface comprises sliding in a 140-160° arc motion.

6. The laser treatment method of claim 4 , wherein sliding the convex contact surface comprises sliding between 2-10 traverses in the arc motion in less than 100 seconds.

7. The laser treatment method of claim 6 , wherein sliding the convex contact surface comprises sliding between 5-10 traverses in the arc motion in 45-55 seconds.

8. The laser treatment method of claim 4 , wherein sliding the convex surface further comprises sliding the convex contact surface in a less than 180° arc motion on an inferior region opposite from the superior region.

9. The laser treatment method of claim 1 , wherein the convex contact surface does not conform to the sclera of the eye.

10. The laser treatment method of claim 1 , wherein the treatment probe further comprises a registration feature for coupling with a portion of the eye to align the distal end of the treatment fiber with the treatment region of the eye.

11. The laser treatment method of claim 1 , wherein delivering the treatment laser comprises delivering a train of laser beam pulses so as to induce a healing response without coagulation, the healing response mitigating pressure in the eye.

12. A treatment probe for treating a portion of the eye, the treatment probe comprising:
an elongate body defining a handle having a proximal end and a distal end;
a contact member coupled with the distal end of the elongate body, the contact member including a convex contact surface for coupling with a surface of the eye;
a treatment fiber extending along in the elongate body and configured for delivering a treatment laser to the eye from a distal end of the treatment fiber.

13. The treatment probe of claim 12 , wherein the convex contact surface has a radius of less than 12 mm.

14. The treatment probe of claim 12 , wherein the convex contact surface has a radius between 8-10 mm.

15. The treatment probe of claim 12 , wherein the convex contact surface has a 5-50 mm radius of curvature.

16. The treatment probe of claim 12 , wherein the distal end of the treatment fiber protrudes distally from the convex contact surface.

17. The treatment probe of claim 12 , wherein the contact member further comprises a registration feature for aligning the treatment probe with a limbus of the eye.

18. The treatment probe of claim 12 , wherein the distal end of the treatment fiber is positioned between 2-5 mm from an edge of the registration feature.

19. The treatment probe of claim 12 , wherein the distal end of the treatment fiber is centered on the convex contact surface.

20. The treatment probe of claim 19 , wherein the distal end of the treatment fiber is between 2-5 mm from an edge of the convex contact surface.

21. The treatment probe of claim 12 , wherein the treatment laser comprises a train of laser beam pulses configured to induce a healing response without coagulation, the healing response mitigating fluid pressure in the eye.

22. A system of treating an eye of a patient for glaucoma, the system comprising:
a console for generating a treatment laser for treating the eye;
a treatment probe configured to operatively couple with the console to deliver the treatment laser from the console toward the eye of the patient, the treatment probe comprising:
an elongate body defining a handle having a proximal end and a distal end, the distal end of the elongate body including a convex contact surface for coupling with a surface of the eye;
a treatment fiber extending along in the elongate body and configured for delivering a treatment laser to the eye from a distal end of the treatment fiber.

Assignees

• Iridex Corp
• Nat Univ Hospital (Singapore) Pte Ltd
• Nat Univ Singapore

Inventors

• Buzawa David
• Chew Paul T K

Classifications

• A61F9/009

  Auxiliary devices making contact with the eyeball and coupling in laser light, {e.g. goniolenses (apparatus for eye examination A61B3/0008)} · CPC title

• A61F9/008 Primary

  using laser · CPC title

• A61F2009/00868

  Ciliary muscles or trabecular meshwork · CPC title

• A61F9/00821

  for coagulation · CPC title

• A61F9/00781

  Apparatus for modifying intraocular pressure, e.g. for glaucoma treatment (drainage implants in general A61M27/002) · CPC title