Surgical handpiece
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United States of America Patent
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Mar 1, 2005
Issued Date -
N/A
app pub date -
Aug 29, 2003
filing date -
Jun 4, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A surgical handpiece having at least two lumens or tubes mounted to a body. At least one tube is used for aspiration and at least one other tube is used to inject heated surgical fluid for liquefying a cataractous lens. A portion of the second tube is enlarged to form a pumping chamber. The pumping chamber works by boiling a small volume of the surgical fluid. As the fluid boils, it expands rapidly, thereby propelling the liquid downstream of the pumping chamber out of the second tube. The pumping chamber may use a pair of electrodes.
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