Intraocular implants and related kits and methods
Devices, methods and kits are described for reducing intraocular pressure. The devices include a support that is implantable within Schlemm's canal and that may restore or maintain at least partial patency of the canal without substantially interfering with transmural or transluminal fluid flow across the canal. The devices utilize the natural drainage process of the eye and may be implanted with minimal trauma to the eye. Kits may include a support and an introducer for implanting the support within Schlemm's canal. Methods may include implanting a support within Schlemm's canal, where the support is capable of restoring or maintaining at least partial patency of the canal without substantial interference with transmural or transluminal fluid flow across the canal.
1. A method of reducing intraocular pressure in a patient, comprising:
advancing a needle to a trabecular meshwork ab interno and puncturing the trabecular meshwork with the needle;
advancing a separate device comprising an elongated member into Schlemm's canal ab interno such that it extends around Schlemm's canal, wherein the elongated member comprises a tip portion having a rounded end configured to guide the elongated member down Schlemm's canal; and
moving the elongated member within and relative to Schlemm's canal while concurrently delivering viscoelastic fluid to dilate Schlemm's canal,
such that intraocular pressure is reduced via juxtacanalicular tissue distension, Schlemm's canal dilation, and collector channel dilation.
2. The method of claim 1 , wherein the elongated member is formed of a wire.
3. The method of claim 1 , wherein the elongated member is formed from a wire and a polymer.
4. The method of claim 1 , wherein the elongated member comprises a diameter of at least about 200 micrometers.
5. The method of claim 1 , wherein the elongated member comprises a diameter of up to about 300 micrometers.
6. The method of claim 1 , wherein the elongated member is advanced around an entire circumference of Schlemm's canal.
7. The method of claim 1 , wherein the elongated member is advanced approximately halfway around a circumference of Schlemm's canal.
8. The method of claim 1 , wherein the elongated member comprises a coating to minimize trauma to Schlemm's canal.
9. The method of claim 1 , wherein the elongated member is illuminated, and the illumination of the elongated member is used to monitor the position of the elongated member.
10. The method of claim 1 , wherein the elongated member is illuminated, and the illumination of the elongated member is used to monitor the performance of the elongated member.
11. The method of claim 1 , wherein the elongated member is illuminated using a laser or a light emitting diode.
12. The method of claim 1 , wherein the viscoelastic fluid is sodium hyaluronate.
13. The method of claim 1 , wherein the patient is suffering from glaucoma.
14. The method of claim 1 , wherein the elongated member is formed of a polymer.
15. The method of claim 1 , wherein the viscoelastic fluid is combined with one or more drugs.
16. The method of claim 15 , wherein the one or more drugs comprise a prostaglandin, beta blocker, miotic, alpha adrenergic agonist, or carbonic anhydrase inhibitor.