Combined epithelial delaminator and inserter

• US 20060052796A1
• Filed: 09/08/2004
• Published: 03/09/2006
• Est. Priority Date: 09/08/2004
• Status: Abandoned Application

• Current Assignee: Tissue Engineering Refraction Incorporated
• Original Assignee: Tissue Engineering Refraction Incorporated
• Inventors: Perez, Edward, Hsei, Paul K., Daulton, Jay S.
• Application Number:
  US10/937,135
• Publication Number:
  US 20060052796A1
• Time in Patent Office: Days
• US Class Current: 606/107
• CPC Class Codes: A61F 2/147 Implants to be inserted in the stroma for refractive correction, e.g. ring-like implants
• CPC Class Codes: A61F 9/0017 implantable in, or in contact with, the eye, e.g. ocular inserts
• CPC Class Codes: A61F 9/007 Methods or devices for eye surgery
• CPC Class Codes: A61F 9/013 Instruments for compensation of ocular refraction A61F9/008 takes precedence; Instruments for use in cornea removal, for reshaping or performing incisions in the cornea

Abstract

An ocular device applicator that is a combined delaminating and inserting device configured to partially delaminate the corneal epithelium and to place a corrective ocular device onto the delaminated cornea under the partially delaminated epithelium. The ocular device applicator leaves at least a portion of the delaminated corneal epithelium attached to the cornea. The ocular device applicator comprises an edge and an ocular device holder. In some versions an ocular device may be secured in and/or released from the device by force applied in the holder, or by a releasable adhesive. The ocular device applicator may be oscillated to facilitate delamination of the corneal epithelium and placement of an ocular device.

Claims

1. An ocular device applicator for introducing an ocular device beneath a corneal epithelium comprising:

an edge configured to mechanically separate a layer of the corneal epithelium from a cornea while maintaining the epithelial layer in at least partial attachment to the cornea; and

an ocular device holder configured to place the ocular device beneath the layer of the corneal epithelium upon the cornea, and to hold the ocular device with the applicator until such placement.

2. The applicator of claim 1 wherein the applicator is configured to replace the epithelial layer onto the ocular device after placement of the ocular device onto the cornea.

3. The applicator of claim 1 wherein the ocular device holder further comprises a recessed region.

4. The applicator of claim 3 wherein the recessed region is configured to hold the entire ocular device.

5. The applicator of claim 1 wherein the applicator is spatula-like in shape.

6. The applicator of claim 1 wherein the applicator is further configured to produce an attached epithelial layer having an epithelial edge that is attached to the cornea for 10% to 50% of the length of the epithelial edge.

7. The applicator of claim 1 wherein the applicator is further configured to produce an attached epithelial layer having an epithelial edge that is attached to the cornea for 50% to 75% of the length of the epithelial edge.

8. The applicator of claim 1 wherein the applicator is further configured to produce an attached epithelial layer having an epithelial edge that is attached to the cornea for 50% to 95% of the length of the epithelial edge.

9. The applicator of claim 1 wherein the applicator is further configured to oscillate the edge.

10. The applicator of claim 9 wherein the applicator is configured to circularly oscillate the edge.

11. The applicator of claim 1 wherein the edge is rounded.

12. The applicator of claim 1 wherein the edge is substantially dull.

13. The applicator of claim 1 wherein at least a portion of the applicator comprises a low-friction surface.

14. The applicator of claim 13 wherein at least a portion of the applicator has a low-friction coating.

15. The applicator of claim 14 wherein the low-friction coating comprises a diamond coating.

16. The applicator of claim 1 wherein the ocular device holder is configured to allow positive and/or negative force to be applied to an ocular device held in the ocular device holder.

17. The applicator of claim 1 wherein the ocular device holder is fluidly connected to a channel configured to pass positive and/or negative force to the ocular device holder.

18. The applicator of claim 17 wherein the ocular device holder is further configured to release an ocular device by applying a positive force through the channel.

19. The applicator of claim 17 wherein the ocular device holder is further configured to secure an ocular device in the ocular device holder by applying a negative force though the channel.

20. The applicator of claim 17 wherein the channel allows pressure to be applied to an ocular device held in the ocular device holder.

21. The applicator of claim 20 wherein the pressure is air pressure.

22. The applicator of claim 1 wherein the edge has a rounded tip.

23. The applicator of claim 1 wherein the edge is substantially blunt.

24. The applicator of claim 1 wherein the edge is rounded.

25. The applicator of claim 1 wherein the edge is stainless steel.

26. The applicator of claim 1 further comprising an ocular device secured in the ocular device holder.

27. The applicator of claim 26 wherein the edge comprises at least a region of the ocular device

28. The applicator of claim 26 wherein the ocular device is secured in the ocular device holder by a releasable adhesive.

29. The applicator of claim 28 wherein the releasable adhesive is a water-soluble polymer.

30. The applicator of claim 29 wherein the releasable adhesive is polyvinylalcohol.

31. A combined delaminating and inserting device for delaminating at least a portion of the corneal epithelium from a cornea and placing an ocular device on the cornea comprising:

an edge configured to delaminate an epithelial layer of an eye;

an upper surface adjacent to the edge, wherein the upper surface comprises a low-friction surface; and

,

an ocular device holder configured to hold an ocular device.

32. A combined delaminating and inserting device for delaminating at least a portion of the corneal epithelium and placing an ocular device on the delaminated cornea comprising:

an ocular device holder configured to releasably hold the ocular device;

an edge configured to mechanically separate a layer of the corneal epithelium from a cornea while maintaining the epithelial layer in at least partial attachment to the cornea; and

,

an ocular device held within the holder.

33. The delaminating and inserting device of claim 32 wherein the edge is comprised of at least a region of the ocular device.

34. An ocular device applicator for introducing an ocular device beneath a corneal epithelium comprising:

an edge configured to mechanically separate a layer of the corneal epithelium from a cornea while maintaining the epithelial layer in at least partial attachment to the cornea;

an ocular device holder configured to place the ocular device beneath the layer of the corneal epithelium upon the cornea, and to hold the ocular device with the applicator until such placement; and

an ocular device held within the ocular device holder.

35. A kit for inserting an ocular device beneath a corneal epithelium comprising:

a combined delaminating and inserting device for delaminating the corneal epithelium and placing an ocular device on the delaminated cornea comprising an edge configured to delaminate an epithelial layer of an eye while maintaining the epithelial layer in at least partial attachment, and a holder configured to hold an ocular device; and

an ocular device held within the holder.

36. A method for delaminating an epithelial layer from an eye using a combined delaminating and inserting device comprising:

lifting from the anterior corneal surface of an eye a substantially continuous epithelial layer using a combined delaminating and inserting device comprising an edge and a holder, wherein the holder is configured to hold an ocular device.

37. A method of inserting an ocular device beneath a corneal epithelium using a combined delaminating and inserting device comprising:

lifting from the anterior corneal surface of an eye a substantially continuous epithelial layer by inserting below the epithelium a combined delaminating and inserting device comprising an edge and a holder configured to hold an ocular device; and

inserting onto the anterior corneal surface an ocular device from the holder of the combined delaminating and inserting device.

38. The method of claim 37 further comprising replacing the epithelial layer over the inserted ocular device.

39. The method of claim 37 further comprising removing the delaminating and inserting device.

40. The method of claim 37 wherein the step of lifting from the anterior corneal surface a substantially continuous epithelial layer further comprises maintaining at least a portion of the epithelial layer attached to the cornea.

41. The method of claim 37 wherein the step of lifting from the anterior corneal surface of a substantially continuous epithelial layer further comprises the step of inserting below the epithelium an oscillating combined delaminating and inserting device.