Surgical method

• US 7,713,228 B2
• Filed: 01/28/2005
• Issued: 05/11/2010
• Est. Priority Date: 01/28/2005
• Status: Active Grant

• Current Assignee: Alcon Incorporated
• Original Assignee: Alcon Incorporated
• Inventors: Robin, Alan L.
• Primary Examiner(s): Lucchesi; Nicholas D
• Assistant Examiner(s): Bouchelle; Laura A
• Application Number:
  US11/046,087
• Publication Number:
  US 20060173437A1
• Time in Patent Office: 1,929 Days
• Field of Search: 604/521, 604/22, 604/43, 604/500, 604/4
• US Class Current: 604/22
• CPC Class Codes: A61F 9/00781 Apparatus for modifying intraocular pressure, e.g. for glaucoma treatment drainage implants in general A61M27/002

Abstract

An irrigating technique that can be used to increase the flow of fluid through the trabecular meshwork. Pulses of relatively high pressure irrigating are directed at the trabecular meshwork. These pulses can be focused, thereby perforating the trabecular meshwork, or applied over a larger area so as to stimulate the trabecular meshwork for improved fluid transport. In addition, the pulses of the irrigating balance salt solution can be used to clean away material, such as iris pigment, that may be blocking or clogging the trabecular meshwork. Such a technique may be practiced using the herein disclosed tip with commercially available surgical handpieces.

Claims

1. A method for treating glaucoma, comprising the steps of:

a) inserting a handpiece tip having a distal end into an eye'"'"'s anterior chamber through an incision in the cornea;

b) placing the distal end at or near a trabecular meshwork of the eye; and

c) causing repeated focused pulses of an irrigating fluid to strike the trabecular meshwork, wherein the focused pulses perforate the trabecular meshwork.

2. The method of claim 1 wherein the pulses stimulate the trabecular meshwork.

3. The method of claim 1 wherein the pulses clear away iris pigment blocking or clogging the trabecular meshwork.

4. The method of claim 1 wherein the pulses are applied over a relatively large portion of the trabecular meshwork.

5. A method for treating glaucoma, comprising the steps of:

a) inserting a handpiece tip having a distal end into an eye'"'"'s anterior chamber through an incision in the cornea;

b) placing the distal end at or near a trabecular meshwork of the eye; and

c) causing repeated pulses of an irrigating fluid to strike the trabecular meshwork, wherein the pulses stimulate the trabecular meshwork and clear away material clogging the trabecular meshwork.

6. The method of claim 5 wherein the pulses are applied over a relatively large portion of the trabecular meshwork.