Surgical apparatus and method of use thereof

摘要

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.

主权项

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 having an edge, and a lens capsule behind the iris, the apparatus comprising:
a frame having a front and rear, an axis extending in a front-to-rear direction, 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 having a plurality of sides that extend around the axis and define a perimeter and a diameter, the second frame portion comprising a plurality of iris engagement members, each iris engagement member defining a concave surface for receiving and contacting an edge portion of an iris around a pupil with the frame in the second operative state, with the frame in the second operative state, the first frame portion configured such that the plurality of sides are arranged so that a first and second of the sides are diametrically opposite and reside within a shared plane to allow both the first and second sides to reside entirely either at the front or at the rear of the iris, with the frame in the second operative state, the second frame portion configured such that: (i) the plurality of iris engagement members extend substantially out of the shared plane; and (ii) each concave surface exerts a pressure on the iris so that the iris engagement members cooperatively maintain the pupil in an enlarged state, wherein the first and second frame portions are configured so that as an incident of changing the frame from the first collapsed state into the second operative state a plurality of the concave surfaces produce a localized torsion on the edge of the iris.