Back to results
US 10,307,150 B2Granted
Ocular tissue expansion ring
AssigneeThe Regents of the University of Colorado, a body corporate
InventorsMalik Y. Kahook, Naresh Mandava
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a structure used in an ophthalmic surgical procedure. The device may be used in pupil expansion or stabilization of the iris. The device is made out of an elastic or semielastic material in a shape that is conducive to easy insertion and removal as well as being optimized for atraumatic pupil expansion.
Claims15
A device comprising:
- a compressible polygon elastomer loop with an even number of sides having alternating side segments connected by a plurality of non-overlapping involutions,
- wherein said non-overlapping involutions alternate in handedness when adjacent,
- wherein every other segment is within a same geometrical plane,
- wherein at least one segment contains at least one positional feature, and
- wherein said positional feature includes at least one of the following:
- is at a midpoint of each segment;
- alternates on adjacent segments in being curved inwards toward the center of the device;
- and further comprises an extension that is displaced from the same geometrical plane of the-segment containing said at least one positional feature;
- wherein said feature is higher or lower than a level of the segment in which said positional feature is located.
6 more elements
A method of inserting a pupil-expanding device into an eye comprising:
- a) providing a device comprising:
- a compressible polygon elastomer loop with an even number of sides having alternating side segments connected by a plurality of non-overlapping involutions,
- wherein said non-overlapping involutions alternate in handedness when adjacent,
- wherein every other segment is within a same geometrical plane,
- wherein at least one segment contains at least one positional feature, and
- wherein said positional feature includes at least one of the following:
- is at a midpoint of each segment;
- alternates on adjacent segments in being curved inwards toward the center of the device;
- and further comprises an extension that is displaced from the same geometrical plane of the segment containing said at least one positional feature;
- wherein said feature is higher or lower than a level of the segment in which said positional feature is located;
- b) stretching said device linearly;
- c) making a cornea or scleral incision such that a connection is made to an anterior chamber of an eye;
- d) inserting said device into and through said incision;
- e) positioning said device in the anterior chamber of the eye;
- f) manipulating said device into a non-stretched form;
- and
- f) inserting said device within a pupil and against iris tissue such that it expands a pupil opening.
14 more elements
A method of removing a pupil-expanding device from an eye comprising:
- a) having a pupil-expanding device positioned within the pupil of the eye, wherein said a device comprises:
- a compressible polygon elastomer loop with an even number of sides having alternating side segments connected by a plurality of non-overlapping involutions,
- wherein said non-overlapping involutions alternate in handedness when adjacent,
- wherein every other segment is within a same geometrical plane,
- wherein at least one segment contains at least one positional feature, and
- wherein said positional feature includes at least one of the following:
- is at a midpoint of each segment;
- alternates on adjacent segments in being curved inwards toward the center of the device;
- and further comprises an extension that is displaced from the same geometrical plane of the segment containing said at least one positional feature;
- wherein said feature is higher or lower than a level of the segment in which said positional feature is located;
- b) articulating segments from underneath an edge of the pupil;
- and
- c) drawing said device through a surgical opening out of the eye.
10 more elements
Dependencies are inferred from the claim text.