Ocular fixation and stabilization device for ophthalmic surgical applications
An interface for coupling an eye to a surgical laser is disclosed. A lens cone includes a base ring opposite an apex ring. The base ring defines a first plane and is adapted to couple to the delivery tip of the laser such that the first plane has a predetermined position relative to the delivery tip. An applanation lens is affixed to the apex ring and has a surface disposed in a second plane such that the second plane is parallel to and has a predetermined position relative to the first plane. A gripper is engagable with the lens cone. An attachment ring is affixed to the gripper and is adapted to couple to the anterior surface of the eye. When the lens cone and gripper are engaged, the applanation lens contacts the anterior surface of the eye, placing the anterior surface in spatial registration with the delivery tip.
1. An interface adapted to couple an eye to a surgical laser, the interface comprising:
a lens cone having a base ring disposed opposite an apex ring, wherein the base ring is adapted to couple to a delivery tip of the surgical laser;
an applanation lens affixed to the apex ring;
a gripper adapted to engage the lens cone and having a central opening, the gripper comprising an alignment aid operable to centrate the central opening about a pupil of the eye; and
an attachment ring affixed to the gripper, the attachment ring being adapted to couple to an anterior surface of the eye such that when the gripper and the lens cone are engaged, the applanation lens is placed into contact with the anterior surface of the eye, thereby placing the anterior surface of the eye in spatial registration with the delivery tip and aligning the interface with eye.
2. The interface of claim 1 , the applanation lens comprising an applanation surface, wherein the applanation surface is placed into contact with the anterior surface of the eye when the gripper and the lens cone are engaged.
3. The interface of claim 2 , wherein the applanation surface deforms the anterior surface of the eye when the gripper and the lens cone are engaged.
4. The interface of claim 1 , wherein the attachment ring comprises inner and outer annular flexible walls adapted to engage the anterior surface of the eye, thereby forming an annular channel between the attachment ring and the anterior surface of the eye.
5. The interface of claim 4 , the attachment ring further comprising a fluid communication channel adapted to couple the annular channel with a vacuum source.
6. The interface of claim 1 , wherein the gripper includes a central orifice adapted to engage the apex ring.
7. The interface of claim 6 , wherein the gripper comprises a pair of expandable jaws disposed adjacent the central orifice, the jaws being adapted to engage the apex ring.
8. The interface of claim 7 , wherein the gripper further comprises opposing lever handles coupled to the jaws, the opposing lever handles being adapted to expand the jaws.
9. The interface of claim 1 , wherein the alignment aid comprises a plurality of alignment marks.
10. The interface of claim 1 , wherein the alignment aid is further operable to laterally align the applanation lens with the eye when the lens cone is coupled to the gripper.
11. The interface of claim 1 , wherein the alignment aid indicates a center of the central opening.
12. A method of coupling an eye with a surgical laser, the method comprising:
coupling a gripper to an anterior surface of the eye, the gripper includes a pair of expandable jaws, and an attachment ring adapted to couple to the anterior surface of the eye and to stabilize the gripper relative to the eye;
coupling a lens cone to a delivery tip of the surgical laser, the lens cone having a base ring defining a first plane, such that the first plane is at a predetermined position relative to the delivery tip;
coupling an apex ring of the lens cone to the gripper, wherein an applanation lens is affixed to the apex ring, the applanation lens having a surface disposed in a second plane such that the second plane is parallel to and at a predetermined position relative to the first plane, thereby bringing the applanation lens in contact with the anterior surface of the eye and placing the anterior surface of the eye in spatial registration with the delivery tip.
13. The method of claim 12 , wherein coupling the gripper to the anterior surface of the eye includes coupling an attachment ring of the gripper to the anterior surface of the eye.
14. The method of claim 13 , wherein coupling the attachment ring to the anterior surface of the eye includes: forming an annular channel between inner and outer annular flexible walls of the attachment ring and the anterior surface of the eye; and creating a negative pressure within the annular channel.
15. The method of claim 12 , wherein coupling the apex ring to the gripper includes coupling the apex ring with a central orifice of the gripper.
16. The method of claim 15 , wherein coupling the apex ring with the central orifice includes engaging the apex ring with the pair of expandable jaws.
17. The method of claim 12 , wherein coupling the apex ring to the gripper includes placing an applanation surface of the lens in contact with the anterior surface of the eye.
18. The method of claim 17 , wherein placing the applanation surface in contact with the anterior surface of the eye includes deforming the anterior surface of the eye using the applanation surface.