IMPLANT FOR INSERTING INTO THE SCHLEMM'S CANAL OF AN EYE

• US 20110224597A1
• Filed: 12/10/2010
• Published: 09/15/2011
• Est. Priority Date: 12/22/2008
• Status: Abandoned Application

• Current Assignee: Grieshaber Ophthalmic Research Foundation
• Original Assignee: Grieshaber Ophthalmic Research Foundation
• Inventors: Grieshaber, Matthias Christian, Stegmann, Robert Christopher
• Application Number:
  US13/131,400
• Publication Number:
  US 20110224597A1
• Time in Patent Office: Days
• 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 implant for inserting into an exposed Schlemm'"'"'s canal is proposed. The implant insertable into the lumen of Schlemm'"'"'s canal includes an elongated tube which includes an axially extending continuous connecting part having several openings or recesses distanced from each other by web shaped ring members and connecting to the interior of the tube with and with arc shaped surfaces, such that in inserted condition the webs are bearing in supporting manner against the inner wall of the lumen of Schlemm'"'"'s canal. The openings/recesses form a direct and permanently open connection between the trabecular tissue and the small channels of the channel system for natural trabecular drainage of the aqueous humor.

Claims

1-21. -21. (canceled)

22. An Implant for inserting into Schlemm'"'"'s canal that has been exposed through an incision and the opening of a scleral flap of an eye, comprising:

an elongated flexible tube insertable into the lumen of Schlemm'"'"'s canal, the tube comprising first and second axially extending connecting parts in diametrical disposition to each other and connected by web shaped ring members arranged at a distance from each other in axial direction at the tube, leaving openings between each of the oppositely arranged ring members that lead to an interior of the tube, wherein the recesses are each provided with a opening angle W oriented in circumferential direction.

23. The implant according to claim 22, wherein the opening angle (W) of a size between 90°

to 105°

.

24. The Implant according to claim 22, wherein the openings between the first and the second connecting part, as well as between each of the ring members are configured as circumferentially oriented recesses.

25. The implant according to claim 22, wherein the opening angle (W) is of the size between 280°

to 290°

.

26. The implant according to claim 22, wherein one of the connecting parts, is provided with a slot shaped axially continuous passage, whereby the two parts are expandable relative to each other.

27. The implant according to claim 22, wherein the web shaped ring members are each provided with a slot shaped passage and wherein the two connecting parts are expandable relative to each other.

28. The implant according to claim 22, wherein the elongated tube has a circular ring shaped profile cross section.

29. The implant according to claims 22, wherein the elongated tube has an oval ring shaped profile cross section.

30. The implant according to claim 22, wherein the elongated tube has a double symmetric oval ring shaped profile cross section.

31. The implant according to claim 27, wherein each of the ring members are separated by slot arranged anywhere at the circumference of the ring member.

32. The implant according to claim 22, wherein the openings connected to the interior space of the tube, are configured rectangular, square or trapezoidal and opposite each other.

33. The implant according to claims 22, wherein the openings are configured oval or elliptical and opposite each other.

34. The implant according to claim 32, wherein the openings provided at one side, as well as those at an opposite side of the tube are axially arranged set off from each other.

35. The implant according to claim 33, wherein the web shaped ring member are leaning in axial direction either in forward direction of rearward direction.

36. The implant according to claim 34, wherein each of the web shaped ring members are alternately and leaning opposite each other.

37. The implant according to claim 22, wherein the flexible tube has a length extending at least one to one half of the circumference of the exposed Schlemm'"'"'s canal and provided at a distal end with a collar for bearing at the inner wall of the sclera when inserted into Schlemm'"'"'s canal.

38. The implant according to claim 22, wherein the flexible tube has a length extending the entire circumference of the exposed Schlemm'"'"'s canal.

39. The implant according to claim 22, wherein the tube is made of a biocompatible flexible material.

40. The implant according to claim 39, wherein the tube is from polymer material having thermal and mechanical shape memory

41. The implant according to claim 40, wherein the tube is flexible in arc shaped manner and ductile relative to a cross section where it is insertable into the lumen of the exposed circular Schlemm'"'"'s canal, and due to a persons body temperature can be returned into the predetermined original shape.

42. The implant according to claim 39, wherein the tube is made of gold or nitinol.

43. The implant according to claim 39, wherein the tube is provided with a heparin-coating.