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Publication numberUST102001 I4
Publication typeGrant
Application numberUS 06/270,657
Publication dateJul 6, 1982
Filing dateJun 4, 1981
Priority dateJun 4, 1981
Publication number06270657, 270657, US T102001 I4, US T102001I4, US-I4-T102001, UST102001 I4, UST102001I4
InventorsElmer J. Ballintine
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Device for extraction of cataracts using miniaturized progressing cavity pump
US T102001 I4
A surgical tissue macerating and removal instrument or tool having a rotating, longitudinally progressing rotor member in a miniaturized Moyno pump cavity, disposed within a hypodermic tube, which itself is coaxially disposed in an extension of a tool handle. A frusto-conical member extends into the tool handle extension and is provided with a cut-off tissue engaging edge at the end distant from the tube. The pump rotor is provided at the end distant from the tube with a cutting edge or other means suitable for drilling into the cataractous lens of an eye. Apertures are provided in the extension adjacent the frusto-conical member so that a treatment fluid may be supplied in the annular space between the tube and the extension and thus may flow to the aperture site. An aperture is provided in the frusto-conical member between the extension and the tube so that the treatment fluid may also enter into the tube where it mixes with macerated tissue being directed through an aperture in the tube to a passageway which may have suction applied thereto to help remove macerated material from the operative site. Radially-inwardly extending fins may be provided on the interior surface of the frusto-conical member to inhibit or prevent rotation of the cataractous lens tissue being macerated.
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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5827292 *Feb 12, 1996Oct 27, 1998Anis; Aziz YehiaRemoval of tissue
U.S. Classification606/107
International ClassificationA61F9/00
Cooperative ClassificationA61F9/00
European ClassificationA61F9/00