Intracorneal lens insertion device
An ophthalmologic lens insertion device that holds a lens between a pair of leaf springs and has a plunger that moves between the leaf springs to eject the lens onto the cornea or into a corneal pocket.
1 . An ophthalmologic lens insertion device comprising;
a handle;
a pair of gripping members extending from the handle to a cotermination point configured to accept and grip a lens;
a plunger extending from the handle between the gripping members and being moveable between a retracted position and an extended position, the plunger having a lens pushing end and the retracted position being sufficient to place the lens pushing end away from the cotermination point toward the handle and the extended position being sufficient to pass the lens pushing end between the gripping members at the cotermination point away from the handle such that a lens held in the cotermination point will be pushed out of the device by the movement of the lens pushing end.
2 . The device of claim 1 wherein the gripping members are resiliently biased to exert sufficient pressure at the cotermination point upon a lens in place between them to retain the lens in place and to separate when the plunger reaches the cotermination point when it is moved toward the extended position between the gripping members.
3 . The device of claim 1 further wherein the plunger is fitted inside the handle for reciprocal movement between the extended position and the retracted position and is attached to a hand operable actuator external of the handle.
4 . The device of claim 2 wherein the gripping members are spaced apart nearer to the handle and at the cotermination point are close enough together to grip a lens in place between them.
5 . The device of claim 1 wherein plunger has an upper side and a lower side and has a land on the upper side and on the lower side coterminous at the lens pushing end.
6 . The device of claim 5 further wherein the gripping members each have a groove facing internally and into which the land of the plunger will slide as the plunger is moved toward the extended position.
7 . The device of claim 6 further wherein the lands are slightly higher off the plunger than the depth of the respective grooves so that as the plunger is extended the lands will cause the grippers to separate from a secure grip on the lens to free the lens for being pushed by the plunger out of the cotermination point.
7 . The device of claim 6 further wherein at least one of the lands is slightly higher off the plunger than the depth of the respective groove so that as the plunger is extended the land will cause the grippers to separate from a secure grip on the lens to free the lens for being pushed by the plunger out of the cotermination point.