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1. (WO2001030286) TIP FOR A LIQUEFRACTURE HANDPIECE

Pub. No.:    WO/2001/030286    International Application No.:    PCT/US2000/025709
Publication Date: Fri May 04 01:59:59 CEST 2001 International Filing Date: Tue Sep 19 01:59:59 CEST 2000
IPC: A61B 18/04
A61F 9/007
Applicants: ALCON LABORATORIES, INC.
Inventors: SUSSMAN, Glenn
PADGET, Martin, J.
COHEN, Donald, M.
Title: TIP FOR A LIQUEFRACTURE HANDPIECE
Abstract:
A surgical handpiece having two coaxial tubes or channels mounted within a body. The first tube is used for aspiration and is smaller in diameter than the second tube so as to create an annular passage between the first and second tube. The annular passage communicates with a pumping chamber formed between two electrodes. 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 annular passage. The electrodes are insulated from each other.