Corneal inlay with holes

• US 4,624,669 A
• Filed: 09/26/1984
• Issued: 11/25/1986
• Est. Priority Date: 09/26/1984
• Status: Expired due to Term

• Current Assignee: Dennis T. Grendahl
• Original Assignee: Surgidev Corporation
• Inventors: Grendahl, Dennis T.
• Primary Examiner(s): FRINKS, RONALD
• Application Number:
  US06/654,962
• Time in Patent Office: 790 Days
• Field of Search: 3/13, 3/1, 128/1 R, 623/4, 623/5, 623/6, 623/11
• US Class Current: 623/5.13
• CPC Class Codes: A61F 2/1451 Inlays or onlays
• CPC Class Codes: A61F 2/15 Implant having one or more holes, e.g. for nutrient transport, for facilitating handling

Abstract

A corneal inlay for implant within the cornea and of a material such as polysulfone or PMMA, including a plurality of small holes or pores to pass nutrients and fluids from the bottom surface layer of the cornea to the top surface layer of the cornea. The holes can be round, the holes can be rectangular in configuration, or the holes can be slits in configuration, preferably small enough so that the holes are not visible to the naked eye. The holes can be particularly slots of a finite width and length, either adjacent to the edges of the inlay or across the surface of the inlay. The holes also provide for breathing and passage of nutrients and fluids, as well as oxygen transmission, between the upper and lower surfaces of the cornea in which the inlay has been implanted.

Claims

1. Corneal inlay comprising:

a. an optic lens of a material for implant within the cornea; and

,

b. plurality of holes having a diameter from 0.001 mm to 0.1 mm extending from a bottom surface to a top surface for passage of nutrients through the cornea.

2. Corneal inlay of claim 1 wherein said holes are positioned about an edge.

3. Corneal inlay of claim 1 wherein said holes are positioned about the surface area.

4. Corneal inlay comprising:

a. an optic lens of material for implant within the cornea; and

,

b. plurality of slits, having a maximum width of 0.01 mm to 0.05 mm and a maximum length of 0.05 mm to 1.0 mm, extending from a bottom surface to a top surface for passage of nutrients through the cornea.

5. Corneal inlay of claim 4 wherein said slits are positioned about an edge.

6. Corneal inlay of claim 4 wherein said slits are positioned about the surface.