Surgery – Instruments – Means for removing – inserting or aiding in the removal or...
Patent
1989-01-23
1990-12-11
Thaler, Michael H.
Surgery
Instruments
Means for removing, inserting or aiding in the removal or...
A61B 1700
Patent
active
049767160
ABSTRACT:
An improved surgical instrument having lens gripping fingers straddled by backup fingers for implanting a foldable intraocular lens in a patient's eye by (a) closing the backup fingers to close the gripping fingers with an unfolded lens positioned between slender tip portions of the gripping fingers in such a way that the lens is folded and gripped between the tip portions, (b) inserting the gripping finger tip portions and the folded lens into the eye thru a corneal incision, (c) extending the gripping fingers beyond the backup fingers and further into the eye to free the tip portions for gradual separation by the elastic strain energy in the folded lens and thereby free the lens to gradually unfold, (d) pushing the unfolding lens from the gripping fingers to release the lens to unfold to its normal lens configuration within the eye, and (e) retracting the gripping fingers relative to the backup fingers and then withdrawing the instrument from the eye. The preferred surgical instrument embodies a disposable lens insertion capsule assembly including the lens gripping fingers and a reusable capsule holder including the backup fingers. A surgical aid in the form of a sterilizable instrument package containing a tray supporting an unfolded lens to be implanted and either the complete surgical instrument or the insertion capsule assembly only with which the capsule holder is engagable on the tray to form the complete instrument after the package is opened.
REFERENCES:
patent: 4715373 (1987-12-01), Mazzocco et al.
Brown Boniard I.
Thaler Michael H.
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