Accommodating intraocular lens having T-shaped haptics

• US 7,048,760 B2
• Filed: 06/03/2003
• Issued: 05/23/2006
• Est. Priority Date: 02/15/1995
• Status: Expired due to Fees

• Current Assignee: The NICE Trust A Trust of The Isle of Man
• Original Assignee: Medevec Licensing BV
• Inventors: Cumming, J. Stuart
• Primary Examiner(s): Willse, David H.
• Application Number:
  US10/454,280
• Publication Number:
  US 20030199977A1
• Time in Patent Office: 1,085 Days
• Field of Search: 623/6.11, 623 618- 622, 623 632- 655
• US Class Current: 623/6.37
• CPC Class Codes: A61F 2/16 Intraocular lenses
• CPC Class Codes: A61F 2/1613 having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus
• CPC Class Codes: A61F 2/1629 for changing longitudinal position, i.e. along the visual axis when implanted
• CPC Class Codes: A61F 2002/1681 having supporting structure for lens, e.g. haptics
• CPC Class Codes: A61F 2002/16901 Supporting structure conforms to shape of capsular bag
• CPC Class Codes: A61F 2220/0091 connected by a hinged linkage mechanism, e.g. of the single-bar or multi-bar linkage type

Abstract

An accommodating intraocular lens having anteriorly and posteriorly movable extended portions, such as T-shaped haptics, extending from a central optic to be implanted within a natural capsular bag of a human eye with the extended portions positioned between an anterior capsular rim and a posterior capsule of the bag, whereby during a post-operative healing period, fibrosis occurs about the extended portions to fixate the lens in the bag in a manner such that subsequent natural contraction and relaxation of the ciliary muscle moves the optic to provide vision accommodation of increased accommodation amplitude and diopters of accommodation.

Claims

1. An accommodating intraocular lens comprising:

a single flexible optic having anterior and posterior sides; and

at least two portions extending from the optic, the portions having hinged inner ends adjacent the optic and outer ends distal to the optic, the outer ends being movable anteriorly and posteriorly relative to the optic, and the portions having at least one flexible fixation finger at the outer ends of the portions.

2. The intraocular lens of claim 1, wherein the portions are spaced equidistant about the optic.

3. The intraocular lens of claim 1, wherein the portions are spaced 180°

about the optic.

4. The intraocular lens of claim 1, wherein the outer ends of the portions have a curved edge.

5. The intraocular lens of claim 1, wherein the portions are haptic plates.

6. The intraocular lens of claim 1, wherein each portion comprises a plate haptic with at least one finger at the distal end of the portion.

7. The intraocular lens of claim 1, wherein the portions are resiliently bendable throughout a portion of their length.

8. The intraocular lens of claim 1, wherein the portions have longitudinal edges, the edges being tapered inwardly towards the outer end of the portions, the portions being wider adjacent to the optic.

9. The intraocular lens of claim 1, wherein the portions have substantially parallel longitudinal edges.

10. The intraocular lens of claim 1, wherein the portions have a width substantially less than a diameter of the optic.

11. The intraocular lens of claim 1, wherein the portions have a width approximating a width of the optic.

12. The intraocular lens of claim 1, wherein the optic, portions, and fixation fingers are integrally formed.

13. The intraocular lens of claim 1, wherein the optic and portions are made from different materials.

14. The intraocular lens of claim 1, wherein the optic and portions are made from the same materials.

15. The intraocular lens of claim 1, further comprising a hinge between the inner ends of the portions and the optic.

16. The intraocular lens of claim 15, wherein the portions are rotatably connected to the optic.

17. The intraocular lens of claim 1, wherein the portions include a thinned area thereby forming a hinge.

18. The intraocular lens of claim 1, wherein the portions have flexible hinges at their inner ends adjacent the optic.

19. The intraocular lens of claim 18, wherein the flexible hinges are formed by a groove.

20. The intraocular lens of claim 19, wherein the groove is V-shaped.

21. The intraocular lens of claim 1, wherein the portions have a width less than a diameter of the optic from the inner ends of the portions to the fixation fingers.

22. The intraocular lens of claim 1, wherein the optic is circular in shape.

23. The intraocular lens of claim 1, wherein the portions have longitudinal edges and the fixation fingers extend laterally out from opposite longitudinal edge of the portions.

24. The intraocular lens of claim 1, wherein the fixation fingers are bowed with an inward curvature towards the optic.

25. The intraocular lens of claim 1, wherein the fixation fingers are radially, resiliently flexible.

26. The intraocular lens of claim 1, wherein said portions and fixation fingers comprise T-shaped haptics.

27. The intraocular lens of claim 26, wherein the fixation fingers have two free ends.

28. The intraocular lens of claim 27, wherein at least one of the free ends includes enlarged portions.

29. The intraocular lens of claim 21, wherein the anterior side of the optic is slightly convex or relatively flat and the posterior side of the optic has a relatively steep convex curvature.

30. The intraocular lens of claim 21, wherein the optic anterior and posterior sides are symmetrically biconvex in shape.

31. The intraocular lens of claim 21, wherein the portions are thickened so as to increase in thickness toward their inner ends.

32. An accommodating intraocular lens comprising:

a single flexible optic having anterior and posterior sides; and

at least two haptics extending from the optic, the haptics having inner ends adjacent the optic and outer ends distal to the optic, the outer ends being movable anteriorly and posteriorly relative to the optic, and the haptics having at least one fixation finger at the outer ends of the haptics, the haptics having flexible hinges at their inner ends adjacent the optic;

wherein the fixation fingers are resiliently flexible.

33. The intraocular lens of claim 32, wherein the haptics are spaced equidistant about the optic.

34. The intraocular lens of claim 32, wherein the outer ends of the haptics have a curved edge.

35. The intraocular lens of claim 32, wherein the haptics are resiliently bendable throughout a portion of their length.

36. The intraocular lens of claim 32, wherein the haptics have longitudinal edges, the edges being tapered inwardly towards the outer ends of the haptics, the haptics being wider adjacent to the optic.

37. The intraocular lens of claim 32, wherein the haptics have substantially parallel longitudinal edges.

38. The intraocular lens of claim 32, wherein the optic, haptics, and fixation fingers are integrally formed.

39. The intraocular lens of claim 32, wherein the optic and haptics are made from different materials.

40. The intraocular lens of claim 32, wherein the hinges attach the haptic inner ends to the optic.

41. The intraocular lens of claim 32, wherein the haptics are rotatably connected to the optic.

42. The intraocular lens of claim 32, wherein the flexible hinges are formed by a thinned area of the haptic.

43. The intraocular lens of claim 32, wherein the flexible hinges are formed by a groove.

44. The intraocular lens of claim 43, wherein the groove is V-shaped.

45. The intraocular lens of claim 32, wherein the haptics have a width less than a diameter of the optic from the inner ends of the haptics to the fixation fingers.

46. The intraocular lens of claim 32, wherein the optic is circular in shape.

47. The intraocular lens of claim 32, wherein the haptics have longitudinal edges and the fixation fingers extend laterally out from opposite longitudinal edges of the haptics.

48. The intraocular lens of claim 32, wherein the fixation fingers are bowed with an inward curvature towards the optic.

49. The intraocular lens of claim 32, wherein the haptics have a width substantially less than a diameter of the optic.

50. The intraocular lens of claim 32, wherein the haptics have a width approximating the width of the optic.

51. The intraocular lens of claim 32, wherein the haptics are T-shaped haptics.

52. The intraocular lens of claim 51, wherein the fixation fingers have free ends.

53. The intraocular lens of claim 52, wherein at least one of the free ends includes enlarged portions.

54. The intraocular lens of claim 32, wherein the anterior side of the optic is slightly convex or relatively flat and the posterior side of the optic has a relatively steep convex curvature.

55. The intraocular lens of claim 32, wherein the optic anterior and posterior sides are symmetrically biconvex in shape.

56. The intraocular lens of claim 32, wherein the haptics are thickened so as to increase in thickness toward their inner ends.

57. The intraocular lens of claim 32, wherein the haptics are haptic plates.