Surgical apparatus and method of use thereof
A surgical apparatus for use in assisting the performance of a procedure on an eye, the eye having a front and rear, a cornea, an iris defining a pupil, and a lens capsule behind the iris. The apparatus has a frame with a front and rear, a first portion and a second portion. The frame is reconfigurable between (i) a first collapsed state for being inserted through an incision in a cornea and (ii) a second operative state for being operatively connected to an iris. The frame first portion is configured to be generally residing within a plane in the second operative state. The second frame portion is configured to be operatively connected to an iris in the second operative state exerts a pressure upon the iris at at least a first location that is spaced from the plane to maintain the pupil in an enlarged state.
1. A surgical apparatus for use in assisting the performance of a procedure on an eye, the eye having a front and a rear, a cornea, an iris defining a pupil, and a lens capsule behind the iris, the apparatus comprising:
a frame having a front and rear, a first portion and a second portion, the frame reconfigurable between (i) a first collapsed state for being inserted through an incision in a cornea and (ii) a second operative state for being operatively connected to an iris,
the first frame portion configured to be generally residing within a plane in the second operative state, the first frame portion having the form of a closed loop,
the second frame portion in the second operative state configured to exert a pressure upon the iris at at least a first location that is spaced from the plane to maintain the pupil in an enlarged state with the frame operatively connected to the iris,
the second frame portion connected with the first frame portion by at least one arm, the at least one arm extending from the first frame portion, and the second frame portion located at a cantilevered end of the at least one arm.
2. The surgical apparatus as recited in claim 1 wherein the first frame portion has a plurality of sides and the second frame portion has a plurality of iris engagement members, wherein each one of the iris engagement members is connected to one of the sides by an arm.
3. The surgical apparatus as recited in claim 1 wherein with frame in the second operative state, the arm is configured to deflect inward toward a front-to-rear axis of the frame.
4. The surgical apparatus as recited in claim 1 wherein with frame in the second operative state, the arm is configured to deflect in a direction substantially parallel to the plane.
5. The surgical apparatus as recited in claim 1 wherein the first frame portion has a plurality of sides of a first length and the second frame portion has a plurality of iris engagement members, wherein each one of the iris engagement members is connected to one of the sides by an arm, each arm having a second length that is greater than one half of the first length.
6. The surgical apparatus as recited in claim 1 wherein the first frame portion has a plurality of sides and the second frame portion has a plurality of iris engagement members, wherein each one of the iris engagement members is connected to one of the sides by an arm to locate each iris engagement member at a corner of two adjacent sides of the first frame portion.
7. The surgical apparatus as recited in claim 1 wherein with the frame in the second operative state the first frame portion generally has the form of a polygon.
8. The surgical apparatus as recited in claim 1 wherein with the frame in the second operative state the first frame portion generally has the form of a rectangle.
9. The surgical apparatus as recited in claim 1 wherein with the frame operatively connected and in the second operative state, the frame is configured to exert a pressure upon the iris at a location that is spaced rearwardly of the plane.
10. The surgical apparatus as recited in claim 1 wherein with the frame operatively connected and in the second operative state, the frame is configured to exert a pressure upon the iris at a location that is spaced forwardly of the plane.
11. The surgical apparatus as recited in claim 1 wherein the second frame portion comprises a plurality of channels spaced apart generally along a front-to-rear axis for receiving part of an iris and configured to exert a pressure upon the iris that maintains the pupil in an enlarged state.
12. The surgical apparatus as recited in claim 11 wherein at least two of the plurality of channels are configured to exert a different pressure upon the iris that maintains the pupil in an enlarged state with the frame operatively connected to an iris and in the second operative state.
13. The surgical apparatus as recited in claim 11 wherein the plurality of channels increase in size in a forward direction along the front-to-rear axis.
14. A method of using a surgical apparatus for assisting the performance of a procedure on an eye, the eye having a front and rear, a cornea, an iris defining a pupil, and a lens capsule behind the iris, the method comprising the steps of:
a) obtaining a surgical apparatus in accordance with claim 1 ;
b) inserting the frame in the first collapsed state through an incision in a cornea; and
c) thereafter operatively connecting the second frame portion with an iris with the frame in the second operative state such that the at least one arm deflects to exert a pressure upon the iris that maintains the pupil in an enlarged state.