Method and intra-sclera implant for treatment of glaucoma and presbyopia

• US 20070219632A1
• Filed: 05/11/2007
• Published: 09/20/2007
• Est. Priority Date: 08/02/2002
• Status: Abandoned Application

• Current Assignee: David Castillejos
• Original Assignee: David Castillejos
• Inventors: Castillejos, David
• Application Number:
  US11/801,880
• Publication Number:
  US 20070219632A1
• Time in Patent Office: Days
• US Class Current: 623/6.130
• 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 9/00781 Apparatus for modifying intraocular pressure, e.g. for glaucoma treatment drainage implants in general A61M27/002

Abstract

An apparatus and method for treating presbyopia and lowering intraocular pressure employing an intra-scleral implant into an elongated cavity oriented in the radial direction of the eye. The implant has a planar portion with a longitudinal axis running therethrough and a pair of extension portions extending a distance away from said planar portion and said longitudinal axis. The implant is implanted in an incision in four quadrants of the sclera. The incisions are shaped similar to the implants. The projecting extensions into side projections of the incisions, provide an anchor to maintain the implant in the sclera.

Claims

1. An intra-scleral implant for delivery of medication to a patient, comprising:

an elongated body dimensioned for implantation into an elongated cavity in the anterior scleral tissue of the eye;

said body having an internal cavity;

means for communication between said internal cavity and an area adjacent to said body;

a reservoir component having an interior cavity adapted for storage of a medication;

means for engagement of said reservoir component to the exterior hemisphere of the eye; and

means for sealed communication between said internal cavity and said interior cavity, whereby said medication from said reservoir is communicated to said implant for administration to a patient in which said implant is placed.

2. The intra-scleral implant of claim 1 additionally comprising:

said elongated body engaged in said cavity having a direct connection to said reservoir in an engaged position; and

said body providing a means to anchor said reservoir to said eye when in said engaged position.

3. The intra-scleral implant of claim 1 wherein said means for sealed communication between said internal cavity and said interior cavity comprises:

a flexible tube having an axial passage in sealed communication with said internal cavity and said interior cavity.

4. The intra-scleral implant of claim 2 wherein said means for sealed communication between said internal cavity and said interior cavity comprises:

a flexible tube having an axial passage in sealed communication with said internal cavity and said interior cavity of said reservoir.

5. The intra-scleral implant of claim 3 additionally comprising:

said flexible tube having a first tube component extending from a sealed communication with said internal cavity to a first distal end;

said flexible tube having a second tube component extending from a sealed communication with said interior cavity, to a second distal end;

means for removable sealed engagement of said first distal end to said second distal end, whereby said reservoir is removably engageable with said body of said implant to provide a means to refill said internal cavity with medicine from subsequent said reservoir components having a said second tube component engageable with said first tube component.

6. The intra-scleral implant of claim 4 additionally comprising:

said flexible tube having a first tube component extending from a sealed communication with said internal cavity to a first distal end;

said flexible tube having a second tube component extending from a sealed communication with said interior cavity, to a second distal end;

means for removable sealed engagement of said first distal end to said second distal end, whereby said reservoir is removably engageable with said body of said implant to provide a means to refill said internal cavity with medicine from subsequent said reservoir components having a said second tube component engageable with said first tube component.

7. The intra-scleral implant of claim 1 additionally comprising:

said elongated body having a planar portion have a first end, a second end;

a first side and a second side of said planar portion communicating between said first and second end;

said elongated body having a longitudinal axis running between said first end and said second end, which longitudinal axis, when implanted, is oriented in the radial direction of the eye; and

a pair of extension portions each extending a substantially equal distance away from said planar portion and said longitudinal axis;

said planar portion and said extension portions forming said implant in a substantially “

T”

shape when viewed from said first or said second end;

said extension portions positioned for an engagement with side cavity portions extending from said elongated cavity in said sclera; and

said extension portions when in said engagement thereby providing means to anchor said implant in said cavity.

8. The intra-scleral implant of claim 1 wherein said means for communication between said internal cavity and an area adjacent to said body is a semipermeable membrane.

9. The intra-scleral implant of claim 7 wherein said means for communication between said internal cavity and an area adjacent to said body is a semipermeable membrane.

10. The intra-scleral implant of claim 1 wherein said elongated body is formed of biodegradable material absorbable by the body of a patient in which said implant is placed.

11. The intra-scleral implant of claim 7 wherein said elongated body is formed of biodegradable material absorbable by the body of a patient in which said implant is placed.

15. The intra-scleral implant of claim 1 additionally comprising:

said elongated body formed of flexible material whereby said body increases in dimension when said internal cavity is filled.

12. An intra-scleral implant for delivery of medication to a patient, comprising:

an elongated body dimensioned for implantation into an elongated cavity in the anterior scleral tissue of the eye;

a reservoir component having an interior cavity adapted for storage of a medication;

means for engagement of said reservoir component to said body wherein said body mounted in said elongated cavity provides a means to anchor said reservoir component to said eye; and

an elongated flexible tube having a first end in sealed communication with said interior cavity; and

said elongated flexible tube having a second end engageable to a position in the interior of said eye whereby said medication from said reservoir is communicated to eye tissue at said position in the interior of said eye of a patient in which said implant is engaged.

13. The intra-scleral implant of claim 12 additionally comprising:

said flexible tube having a second axial passage in sealed communication with said internal cavity; and

said second axial passage providing means to drain fluid from said eye tissue to said interior cavity.

14. The intra-scleral implant of claim 12 additionally comprising:

said elongated body having a planar portion have a first end, a second end;

a first side and a second side of said planar portion communicating between said first and second end;

said elongated body having a longitudinal axis running between said first end and said second end;

a pair of extension portions each extending a substantially equal distance away from said planar portion and said longitudinal axis;

said extension portions positioned for an engagement with side cavity portions extending from said elongated cavity in said sclera; and

said extension portions when in said engagement thereby providing means to anchor said implant in said cavity.