Insertion system for corneal implants

• US 8,162,953 B2
• Filed: 03/28/2007
• Issued: 04/24/2012
• Est. Priority Date: 03/28/2007
• Status: Active Grant

• Current Assignee: ReVision Optics, Inc.
• Original Assignee: ReVision Optics, Inc.
• Inventors: Dishler, Jon, Schneider, Ned, Le, Alan Ngoc
• Primary Examiner(s): Severson, Ryan
• Assistant Examiner(s): CRONIN, ASHLEY L
• Application Number:
  US11/692,835
• Publication Number:
  US 20080243138A1
• Time in Patent Office: 1,854 Days
• Field of Search: 604/294, 606/107, 606/166, 623/4.1, 623/5.11, 623/5.14, 623 611- 613
• US Class Current: 606/107
• CPC Class Codes: A61F 2/148 Implantation instruments specially adapted therefor

Abstract

Provided therein are apparatuses, systems and methods for storing and retrieving a corneal implant and for delivering the corneal implant in or on the cornea. In an embodiment, a insertion system comprises an inserter for delivering a corneal implant to a desired location in or on the cornea. The inserter has a holding space at its distal end for holding a corneal implant therein. A solution may substantially fill the holding space with the corneal implant to keep the implant hydrated and to hold the implant in the holding space by the surface tension of the solution. The corneal implant may be preloaded in the holding space of the inserter and stored in a storage container filled with storage fluid, e.g., saline, until use. To deliver the corneal implant, the inserter is positioned at the desired location, and the corneal implant released from the holding space of the inserter.

Claims

1. A corneal implant insertion system comprising:

an elongated body having a distal end and a proximal end;

a holding space at the distal end of the elongated body, wherein the holding space is defined between a top distal portion having a width and a bottom distal portion having a width, wherein the top distal portion is generally flat across its width and the bottom distal portion is generally flat across its width;

a slot through the top distal portion of the elongated body, wherein the slot extends to a leading edge of the elongated body;

a corneal implant retained within the holding space; and

a fluid disposed in the holding space such that the corneal implant is retained within the holding space in an unstressed configuration due to the surface tension of the fluid.

2. The insertion system of claim 1, wherein the holding space has a width that is between a diameter of the corneal implant and 20 percent larger than the diameter of the corneal implant.

3. The insertion system of claim 1, wherein a top surface of the top distal portion of the elongated body slopes downward relative to the bottom distal portion to the leading edge.

4. The insertion system of claim 1, wherein the leading edge is semicircular.

5. The insertion system of claim 1, further comprising a bottom slot through the bottom distal portion of the elongated body.

6. The insertion system of claim 5, wherein the bottom slot extends to the leading edge of the elongated body and is substantially aligned with the slot through the top distal portion.

7. The insertion system of claim 1, wherein the elongated body is made from a single piece of material.

8. The insertion system of claim 7, wherein the material comprises titanium.

9. The insertion system of claim 1, wherein the elongated body has a bend near the distal end.

10. The insertion system of claim 9, wherein the bend of the elongated body is contoured to follow the curvature of a patient'"'"'s cornea.

11. The insertion system of claim 9, wherein the bend is a first bend, and the elongated body also has a second bent portion proximal to the first bend.

12. The insertion system of claim 1, wherein the corneal implant has a diameter of between 1 mm and 7 mm.

13. The insertion system of claim 12, wherein the holding space has a width that is no more than 20 percent larger than a diameter of the corneal implant.

14. The insertion system of claim 1, further comprising a cap placed on the distal end of the elongated body, wherein the cap substantially encloses the holding space of the elongated body.

15. The insertion system of claim 14, further comprising a storage container at least partially filled with the fluid, wherein the cap and the holding space of the elongated body are submerged in the fluid.

16. The insertion system of claim 15, wherein the fluid comprises saline.

17. The system of claim 1 wherein the generally flat top distal portion and the generally flat bottom distal portion are substantially parallel.

18. The system of claim 17 wherein the corneal implant has an anterior surface and a posterior surface, and wherein the corneal implant is held in the holding space such that the anterior surface is adjacent the top distal portion and the posterior surface is adjacent the bottom distal portion.

19. The system of claim 1 wherein the holding space is also defined by a first side wall and a second side wall, wherein the first and second side walls have slots therein.

20. The system of claim 1 further comprising an implant removal tool adapted to fit through the slot and engage the corneal implant in order to remove the corneal implant from the holding space.