Uveoscleral drainage device

• US 7,662,123 B2
• Filed: 03/13/2006
• Issued: 02/16/2010
• Est. Priority Date: 07/19/2002
• Status: Expired due to Fees

• Current Assignee: Yale University
• Original Assignee: Yale University
• Inventors: Shields, Milton B.
• Primary Examiner(s): Deak; Leslie R
• Application Number:
  US11/374,398
• Publication Number:
  US 20060155238A1
• Time in Patent Office: 1,436 Days
• Field of Search: 604/8, 604/9, 604/93.01, 604/289, 604/10, 604/30, 604/264, 606/4, 606/6, 606/107, 606/108, 606/161, 606/166, 606/167, 606/170, 606/172, 623/6.12
• 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

An ophthalmic shunt implantable in an eye having an elongate body and a conduit for conducting aqueous humor from an anterior chamber of the eye to the suprachoroidal space of the eye. The elongate body has a forward end and an insertion head that extends from the forward end. The insertion head defines a shearing edge suitable for cutting eye tissue engage thereby. The forward end and the insertion head of the body define a shoulder surface. The conduit has a first end defined on a portion of a top surface of the insertion head. The conduit also extends through the body from the forward end to a back end thereof. The first end of the conduit is spaced from the shearing edge and, in one example, from the shoulder of the body.

Claims

1. An ophthalmic shunt implantable in an eye comprising:

an arcuate elongate body having a forward end, a spaced back end;

an insertion head extending from the forward end of the elongate body, the insertion head having a shearing edge for cutting eye tissue engaged thereby;

a shoulder surface defined on said elongate body and formed at a junction of the insertion head against the forward end of said elongate body, said shoulder extending laterally along the forward end of the elongate body; and

an enclosed conduit having a first end defined on a portion of said insertion head and extending through said elongate body from the forward end to the back end thereof.

2. The shunt of claim 1, wherein the elongate body has a lower surface, and wherein a portion of the insertion head is substantially co-planar to the lower surface thereof.

3. The shunt of claim 1, wherein the elongate body has an arcuate shape along at least a portion of its length that is adapted to extend along the curvature of the sclera.

4. The shunt of claim 1, wherein the elongate body comprises at least one planar surface configured to be grasped by a surgical tool.

5. The shunt of claim 1, wherein a longitudinally extending groove configured to be grasped by a surgical tool is defined on at least a portion of an exterior surface of the elongate body.

6. The shunt of claim 5, wherein the longitudinally extending groove is defined on at least a portion of the upper surface of the elongate body.

7. The shunt of claim 5, wherein a planar surface configured to be grasped by the surgical tool is defined on at least a portion of a lower surface of the elongate body.

8. The shunt of claim 5, wherein a second longitudinally extending groove configured to be grasped by the surgical tool is defined on at least a portion of a lower surface of the elongate body.

9. The shunt of claim 1, wherein a first end of the conduit is positioned at an acute angle with respect to the top surface of the insertion head.

10. The shunt of claim 1, wherein the elongate body is substantially rigid.

11. The shunt of claim 1, wherein the elongate body is comprised of biocompatible materials.

12. The shunt of claim 1, wherein an exterior surface of the elongate body is non-porous.

13. The shunt of claim 1, wherein the elongate body comprises at least a pair of spaced notches configured to facilitate suturing the elongate body to eye tissue.

14. The shunt of claim 1, wherein the body has at least a pair of spaced bores extending between an upper and a lower surfaces of said elongate body, the pair of spaced bores configured to facilitate suturing the elongate body to eye tissue.

15. The shunt of claim 1, wherein the conduit comprises a wicking member configured to regulate the flow of aqueous humor from an inlet end to an outlet end of the wicking member.

16. The shunt of claim 1, further comprising a wicking member configured to regulate the flow of aqueous humor from an inlet end to an outlet end of the wicking member, the wicking member disposed within at least a portion of the conduit.

17. The shunt of claim 1, wherein the insertion head extends from a portion of the forward end of the elongate body that is spaced from a circumferential edge of the forward end of the elongate body.

34. The shunt of claim 1, wherein the enclosed conduit overlies at least a portion of the insertion head.

18. An ophthalmic shunt implantable in an eye comprising:

an arcuate elongate body of a biocompatible material, the elongate body having a forward end and a spaced back end;

an insertion head extending from the forward end of the elongate body, the insertion head having a shearing edge for cutting eye tissue engaged thereby;

a shoulder surface defined on said elongate body and formed at a junction of the insertion head against the forward end of said elongate body, said shoulder extending laterally along the forward end of the elongate body; and

an enclosed conduit defined on at least a portion of said insertion head and extending through said elongate body from the forward end to the back end thereof.

19. The shunt of claim 18, wherein the insertion head extends front a portion of the forward end of the elongate body that is spaced from a circumferential edge of the forward end of the elongate body.

20. The shunt of claim 18, wherein the insertion head has a base portion having a first width, wherein the elongate body has a first elongate edge and a spaced second elongate edge, and wherein the first and second elongate edges are spaced a second width that is greater than said first width.

21. The shunt of claim 18, wherein the elongate body has a lower surface that is substantially co-planar with a portion of the insertion head.

22. The shunt of claim 18, wherein the elongate body has an arcuate shape along at least a portion of its length.

23. The shunt of claim 18, wherein the elongate body comprises at least one planar surface configured to be grasped by a surgical tool defined on at least a portion of at least one of an upper or a lower surfaces of the elongate body.

24. The shunt of claim 18, wherein the elongate body comprises a longitudinally extending groove configured to be grasped by a surgical tool on at least a portion of an exterior surface of the elongate body.

25. The shunt of claim 24, wherein the longitudinally extending groove is defined on at least a portion of an upper surface of the elongate body.

26. The shunt of claim 24, wherein a planar surface, configured to be grasped by the surgical tool, is defined on at least a portion of a surface of the elongate body opposite the longitudinally extending groove.

27. The shunt of claim 24, further comprising a second longitudinally extending groove defined on at least a portion of a surface of the elongate body opposite the longitudinally extending groove.

28. The shunt of claim 18, wherein an exterior surface of the elongate body is non-porous.

29. The shunt of claim 18, wherein said elongate body comprises at least a pair of spaced notches configured to facilitate suturing the elongate body to eye tissue.

30. The shunt of claim 18, wherein the elongate body comprises at least a pair of spaced bores extending between an upper and a lower surface of said elongate body, the pair of spaced bores configured to facilitate suturing the elongate body to eye tissue.

31. The shunt of claim 18, wherein the elongate body has a length sufficient to extend from proximate the anterior chamber of the eye to the suprachoroidal space.

32. The shunt of claim 18, wherein the conduit comprises a wicking member configured to regulate the flow of aqueous humor from an inlet end to an outlet end of the wicking member.

33. The shunt of claim 18, further comprising a wicking member configured to regulate the flow of aqueous humor from an inlet end to an outlet end of the wicking member, the wicking member disposed within at least a portion of the conduit.

35. The shunt of claim 18, wherein the enclosed conduit overlies at least a portion of the insertion head.

36. An ophthalmic shunt implantable in an eye, comprising:

an arcuate elongate body of biocompatibie material, the elongate body having a longitudinal axis, a forward end, a spaced back end, and a longitudinally extending bore having a proximal end defined in the forward end of the insertion head and a distal end defined in the back end of the elongate body;

an insertion head extending from the forward end of the elongate body, the insertion head having a shearing edge for cutting eye tissue engaged thereby wherein the proximal end of the longitudinally extending bore is positioned adjacent to a portion of the insertion head;

a shoulder surface defined on said elongate body and formed at a junction of the insertion head and the forward end of said elongate body, said shoulder extending laterally along the forward end of the elongate body; and

a tube of biocompatible material, the tube having a first end and a spaced second end, at least a portion of the tube positioned within the longitudinally extending bore of said elongate body such that the first end of the tube extends through the proximal end of the bore and contacts a portion of a surface of the insertion head, the first end of the tube being spaced from the shoulder surface of said elongate body.

37. The shunt of claim 36, wherein the shearing edge has a substantially arcuate shape.

38. The shunt of claim 36, wherein the body has a substantially fusiform cross-sectional shape.

39. The shunt of claim 36, wherein the elongate body comprises at least one planar surface configured to be grasped by a surgical tool.

40. The shunt of claim 36, wherein the elongate body comprises a longitudinally extending groove configured to be grasped by a surgical tool is defined on at least a portion of an exterior surface of the elongate body.

41. The shunt of claim 36, wherein an exterior surface of the elongate body is non-porous.

42. The shunt of claim 36, wherein the elongate body comprises at least a pair of spaced notches configured to facilitate suturing the elongate body to eye tissue.

43. The shunt of claim 36, wherein the elongate body comprises at least a pair of spaced bores extending between an upper and a lower surface of said elongate body, the pair of spaced bores configured to facilitate suturing the elongate body to eye tissue.

44. The shunt of claim 36, wherein the elongate body has a length sufficient to extend from proximate the anterior chamber of the eye to the suprachoroidal space.

45. A method for lowering eye pressure in an eye composing:

a. making a first incision in and through the conjunctiva and the sclera at a position posterior to the limbus;

b. providing a biocompatible ophthalmic shunt comprising;

i. an arcuate elongate body having a forward end, a spaced back end;

ii. an insertion head having a shearing edge for cutting eye tissue engaged thereby;

iii. a shoulder surface defined on said elongate body and formed at a junction of the insertion head and the forward end of said elongate body, wherein said shoulder extending laterally along the forward end of the elongate body and wherein said shoulder surface positions at least a portion of the elongate body to seal the incision; and

iv. an enclosed conduit extending, through said elongate body from the forward end to the back end thereof;

c. grasping a portion of the elongate body of the shunt;

d. disposing the insertion head of the shunt in and through the first incision and into the supraciliary space of the eye;

e. inserting at least a portion of the shearing edge of the insertion head of the shunt into and through die anterior chanter angle and into the anterior chamber of the eye so that the first end of the conduit is in fluid communication with the anterior chamber;

f. advancing the insertion head anteriorally to seat a surface of the implant adjacent to an interior surface of the supraciliary space of the eye; and

g. closing the first incision.

46. The method of claim 45, further comprising suturing the implant to a portion of the sclera.

47. A method for treating glaucoma in an eye comprising:

a. providing a biocompatible ophthalmic shunt comprising;

i. a thin, arcuate elongate body of a biocompatible material, the elongate body having a forward end, a back end;

ii. an insertion head having a shearing edge for cutting eye tissue engaged thereby to form an incision;

iii. a shoulder surface defined on said elongate body and formed at a junction of the insertion head and the forward end of said elongate body, wherein said shoulder extending laterally along the forward end of the elongate body and wherein said shoulder surface positions at least a portion of the elongate body to seal the incision; and

iv. an enclosed conduit extending through said elongate body from the forward end to the back end thereof;

b. inserting at least a portion of the shearing edge of the insertion head of the shunt into and through the anterior chamber angle and into the anterior chamber of the eye;

c. disposing, the first end of the conduit into fluid communication with the anterior chamber of the eye;

d. introducing the insertion head anteriorally to seat the shoulder surface of the implant adjacent an interior surface of the supraciliary space of the eye;

e. disposing the back end of the elongate body of the shunt into the suprachoroidal space of the eye so that a second end of the conduit is in fluid communication with the suprachoroidal space; and

f. securing the shunt to the eye.

48. The method of claim 47, wherein securing the shunt to the eye comprises suturing the shunt to a portion of the sclera.

49. The method of claim 47, further comprising making a first incision in and through the conjunctiva and the sclera at a position posterior to the limbus prior to the insertion of the insertion head into the anterior chamber.

50. An ophthalmic shunt implantable in an eye comprising:

a substantially planar elongate body having a forward end, a spaced back end;

an insertion head extending from the forward end of the elongate body, the insertion head having a shearing edge for cutting eye tissue engaged thereby;

a shoulder surface defined on said elongate body and formed at a junction of the insertion head against the forward end of said elongate body, said shoulder extending laterally along the forward end of the elongate body; and

an enclosed conduit having a first end defined on a portion of said insertion head and extending through said elongate body from the forward end to the back end thereof.