Device for glaucoma treatment and methods thereof

• US 6,533,768 B1
• Filed: 04/14/2000
• Issued: 03/18/2003
• Est. Priority Date: 04/14/2000
• Status: Expired due to Term

• Current Assignee: Regents of the University of California (University of California)
• Original Assignee: Regents of the University of California (University of California)
• Inventors: Hill, Richard A.
• Primary Examiner(s): LEE, KEVIN L
• Application Number:
  US09/549,349
• Time in Patent Office: 1,068 Days
• Field of Search: 604/8, 604/27, 604/9, 604/28, 604/289, 604/294, 604/521, 606/108
• US Class Current: 604/521
• CPC Class Codes: A61F 9/00781 Apparatus for modifying intraocular pressure, e.g. for glaucoma treatment drainage implants in general A61M27/002

Abstract

Surgical methods and related medical devices for treating glaucoma are disclosed. The method comprises trabecular bypass surgery, which involve bypassing diseased trabecular meshwork with the use of a seton implant. The seton implant is used to prevent a healing process known as filling in, which has a tendency to close surgically created openings in the trabecular meshwork. The surgical method and novel implant are addressed to the trabecular meshwork, which is a major site of resistance to outflow in glaucoma. In addition to bypassing the diseased trabecular meshwork at the level of the trabecular meshwork, existing outflow pathways are also used or restored. The seton implant is positioned through the trabecular meshwork so that an inlet end of the seton implant is exposed to the anterior chamber of the eye and an outlet end is positioned into fluid collection channels at about an exterior surface of the trabecular meshwork or up to the level of aqueous veins.

Claims

1. A method for increasing aqueous humor outflow in an eye of a patient to reduce an intraocular pressure therein, comprising the steps of:

creating an opening through a trabecular meshwork at the level of the trabecular meshwork;

inserting an elongated seton implant into the opening, the seton implant having an inlet end and outlet end;

exposing the inlet end of the seton implant to an anterior chamber of the eye;

positioning the outlet end of the seton implant through the trabecular meshwork and beyond Schlemm'"'"'s canal; and

restoring existing outflow pathways.

2. The method of claim 1 wherein the outlet end of the seton implant further enters into fluid collection channels of existing outflow pathways.

3. The method of claim 1 wherein the outlet end of the seton implant further enters into aqueous collectors.

4. The method of claim 1 wherein the outlet end of the seton implant further enters into aqueous veins.

5. A method for increasing aqueous humor outflow in an eye of a patient to reduce an intraocular pressure therein, comprising the steps of:

creating an opening through a trabecular meshwork at the level of the trabecular meshwork;

inserting an elongated seton implant into the opening, the seton implant having an inlet end and outlet end;

exposing the inlet end of the seton implant to an anterior chamber of the eye;

positioning the outlet end of the seton implant through the trabecular meshwork and beyond Schlemm'"'"'s canal into fluid collection channels of existing outflow pathways; and

restoring existing outflow pathways.

6. The method of claim 5 wherein the outlet end of the seton implant further enters into aqueous collectors.

7. The method of claim 5 wherein the outlet end of the seton implant further enters into aqueous veins.