Tip for a liquefracture handpiece
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United States of America Patent
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-
Dec 18, 2001
Issued Date -
N/A
app pub date -
Oct 1, 1999
filing date -
Jun 4, 1998
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A tip for a liquefraction surgical handpiece uses at least two tubes. One tube is used for aspiration and another, smaller tube is used to inject heated surgical fluid for liquefying a cataractous lens. The distal portion of the injection tube terminates just inside of the aspiration tube so that heated fluid escaping the injection tube is reflected off of the internal wall of the aspiration tube prior to entering the eye. The internal wall is textured or roughened to further diffract the fluid stream. Such an arrangement prevents the injected fluid from directly entering the eye. The handpiece may also contain other tube, for example, for injecting relatively cool surgical fluid.
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