| 摘要 |
Apparatus for removing tissues such as vitreous humer from an eye has an outer needle having an aperture near one end; an inner tube disposed partially within the outer needle, having a sharp end and another end to which a vacuum is applied; a drive system for reciprocating the inner tube within the outer needle so that the sharp end of the inner tube reciprocates across the aperture to cut tissue; indexing means so that the inner tube does not rotate with respect to the outer needle; and venting means for releasing compressed air.
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