Glaucoma pressure regulator

• US 5,752,928 A
• Filed: 07/14/1997
• Issued: 05/19/1998
• Est. Priority Date: 07/14/1997
• Status: Expired due to Fees

• Current Assignee: RDO Medical, Inc.
• Original Assignee: RDO Medical, Inc.
• Inventors: de Roulhac, Joseph Gregoire, Ruiz, John Luke, Olsen, C. Eric
• Primary Examiner(s): Rimell, Sam
• Application Number:
  US08/891,966
• Time in Patent Office: 309 Days
• Field of Search: 604/8, 604/9, 604/10, 604/294, 604/289, 623/4
• US Class Current: 604/8
• CPC Class Codes: A61F 9/00781 Apparatus for modifying intraocular pressure, e.g. for glaucoma treatment drainage implants in general A61M27/002

Abstract

The subject invention is an implant for relieving abnormally high intraocular pressures with the anterior chamber of an eyeball which is associated with the disease called glaucoma. The implant includes a base plate which is formed of a thin, flexible, preferably rubber material such as silicone rubber. Mounted on the base plate is a housing with the housing including an internal chamber. The housing has an open front end covered by a canopy which is mounted on the base plate. The rear end of the housing is attached to a tube. Aqueous humor is to be conducted through the tube, through the porous block and then through the access opening into the ambient. The housing is mounted within a mounting pocket formed within the base plate.

Claims

1. A glaucoma pressure regulator adapted to be implanted within the conjunctiva of an eyeball, said regulator comprising:

a thin, flexible base plate having a front edge and a rear edge, side edges interconnecting said front edge and said rear edge, said base plate having a bottom surface and a top surface, said top surface including a first recessed area forming a mounting pocket;

a housing having an internal chamber, said housing being fixedly mounted within said mounting pocket, said housing having a front end and a rear end, said front end being open forming an access opening, said rear end being connected to a drainage tube; and

a porous block mounted within said internal chamber, aqueous humor from said tube must flow through said porous block before exiting said housing at said front end.

2. The glaucoma pressure regulator as defined in claim 1 wherein:

said base plate being constructed of silicone rubber.

3. The glaucoma pressure regulator as defined in claim 1 wherein:

said base plate including a first side slot and second side slot, said first side slot connecting from one of said side edges and extending within said base plate, said second side slot extending from the other of said side edges and extending within said base plate, said side slots increasing the flexibility of said base plate.

4. The glaucoma pressure regulator as defined in claim 1 wherein:

said mounting pocket connecting with said rear edge, said mounting pocket being spaced from both said side edges.

5. The glaucoma pressure regulator as defined in claim 1 wherein:

a canopy attached to said front end of said housing, said canopy covering entirely said access opening.

6. The glaucoma pressure regulator as defined in claim 1 wherein:

said porous block comprising a molded, open cell, high density polyethylene polymer with a nominal porosity of eleven microns.

7. The glaucoma pressure regulator as defined in claim 1 wherein:

said bottom surface including a second recessed area, said second recessed area being substantially larger than said first recessed area, said second recessed area functioning as a bleb when mounted within the eyeball.