Apparatus and method for controlling placement of intraocular implants
Some embodiments disclosed herein relate to devices and methods for controlling placement of intraocular implants within a patient's eye including but not limited to placement within or near the collector ducts of Schlemm's canal located behind the trabecular meshwork. In some embodiments, a handheld peristaltic rotor device having a compression element can be positioned on a corneal surface of the eye and rotated to create a peristaltic movement of blood in one or more episcleral veins to generate blood reflux within Schlemm's canal such that one or more collector ducts, or channels, of Schlemm's canal can be located. In some embodiments, an implant can be implanted near the identified location of the one or more collector ducts, or channels.
1. A handheld peristaltic rotor device for locating collector ducts of Schlemm's canal of an eye, the handheld peristaltic rotor device comprising:
a rotor having a proximal portion and a distal open end, the distal open end comprising a distal rim surface and a corneal clearance portion;
a plurality of compression elements protruding from the distal rim surface; and
a handle connected to the proximal portion of the rotor to facilitate manual rotation of the rotor, the handle comprising an elongated rod of rigid material,
wherein the rotor and the plurality of compression elements are configured to cause a blood reflux into Schlemm's canal from one or more occluded episcleral surface regions of an eye by positioning the rotor on an episcleral surface of the eye and rotating the rotor.
2. The rotor device of claim 1 , wherein the corneal clearance portion is configured to substantially conform to the episcleral surface of the eye.
3. The rotor device of claim 1 , wherein the rotor comprises a plurality of anti-suction vents configured to allow passage of air from a distal surface to an external surface of the rotor.
4. The rotor device of claim 1 , wherein the plurality of compression elements comprises a plurality of concentric spiral protrusions.
5. The rotor device of claim 1 , wherein the plurality of compression elements taper in height along their length.
6. The rotor device of claim 1 , wherein the plurality of compression elements are formed of a compliant polymeric material.
7. The rotor device of claim 1 , further comprising an optical portion comprising a magnifying lens to facilitate visualization of reflux.
8. The rotor device of claim 7 , wherein the optical portion is detachably coupled to the proximal portion of the rotor.
9. The rotor device of claim 7 , further comprising a spring having a first end coupled to the optical portion and a second end coupled to the proximal portion of the rotor, wherein the spring is configured to cause rotation of the rotor.
10. A handheld peristaltic rotor device for locating collector ducts of Schlemm's canal of an eye, the handheld peristaltic rotor device comprising:
a proximal handle comprising an elongated rod of rigid material;
a distal rotor member having a proximal end and a distal open end,
wherein the distal open end of the distal rotor member comprises a distal rim surface comprising a plurality of compression elements protruding from the distal rim surface and a corneal clearance portion,
wherein the proximal end of the distal rotor member comprises a plurality of anti-suction vents configured to allow passage of air from the corneal clearance portion to an external surface of the proximal end of the distal rotor member,
wherein the plurality of compression elements is configured to apply pressure to an episcleral surface region of the eye, thereby occluding one or more episcleral veins to produce blood reflux within Schlemm's canal, and
wherein a distal end of the proximal handle is coupled to the proximal end of the distal rotor member to facilitate manual rotation of the distal rotor member.
11. The rotor device of claim 10 , wherein the corneal clearance portion is configured to substantially conform to the episcleral surface region of the eye.
12. The rotor device of claim 10 , wherein the plurality of compression elements comprises a plurality of concentric spiral protrusions.
13. The rotor device of claim 10 , wherein the plurality of compression elements comprises a plurality of ribs.
14. The rotor device of claim 10 , wherein the plurality of compression elements comprises a plurality of spoke-shaped protrusion extending outward from the distal rotor member.
15. The rotor device of claim 10 , wherein the plurality of compression elements taper in height along their length.
16. The rotor device of claim 10 , wherein the plurality of compression elements are formed of a compliant polymeric material.
17. The rotor device of claim 10 , further comprising an optical portion comprising a magnifying lens to facilitate visualization of reflux.
18. The rotor device of claim 17 , wherein the optical portion is detachably coupled to the proximal portion of the rotor.
19. The rotor device of claim 17 , further comprising an internally wound spring having a first end coupled to the optical portion and a second end coupled to the proximal portion of the rotor, wherein the spring is configured to cause rotation of the rotor.