Cataract disassembly

Details Cataract disassembly Cataract disassembly

1994-10-11

1995-09-19

Aschenbrenner, Peter A.

Surgery

Instruments

Means for removing, inserting or aiding in the removal or...

606 1, 606161, A61B 1700

Patent

active

054512301

ABSTRACT:
An instrument to facilitate nuclear disassembly during cataract surgery includes a proximal handle, a shaft portion axially aligned with the proximal handle, an intermediate portion constructed to traverse the cortex of the eye, and a hook-form distal end. An inner region of the hook-form has a leading edge defined by diverging surfaces. The diverging surfaces lie at an acute splitting angle to one another selected to have a wedging effect when the leading edge is drawn along a cleavage plane of the nucleus. The diverging surfaces define a relatively bulky back portion that imparts desired stiffness to the leading edge. The hook-form is shaped to facilitate maintaining contact with the nucleus while the leading edge is drawn along the cleavage plane. A method of performing nuclear disassembly during cataract surgery utilizing the instrument is also described.

REFERENCES:
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patent: 5188125 (1993-02-01), Kilmer et al.
patent: 5282796 (1994-02-01), Knoepfler
patent: 5352219 (1994-10-01), Reddy
Koch et al., J. Cataract Refract Surg. 20:566-570, 1994.
Shepherd, J. Cataract Refract Surg. 16:436-440, 1990.
Fine, J. Cataract Refract Surg. 17:366-371, 1991.
Gimbel, J. Cataract Refract Surg. 17:281-291, 1991.
Fine, J. Cataract Refract Surg. 18:508-512, 1992.
Fine, et al., J. Cataract Refract Surg. 19:797-802, 1993.

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