A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 9/007 (2006.01) A61B 18/04 (2006.01)
Patent
CA 2382539
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.
La présente invention concerne une pièce manuelle chirurgicale présentant deux tubes ou canaux coaxiaux qui sont montés à l'intérieur d'un corps. Le premier tube est utilisé pour l'aspiration et est de diamètre plus petit que le second tube, de façon à créer un passage annulaire entre le premier et le second tube. Le passage annulaire communique avec une chambre de pompage qui est formée entre deux électrodes. La chambre de pompage permet l'ébullition d'un petit volume du fluide chirurgical. Lorsque le fluide bout, il se dilate rapidement, ce qui propulse le liquide en aval de la chambre de pompage, hors du passage annulaire. Les électrodes sont isolées les unes des autres.
Cohen Donald M.
Padget Martin J.
Sussman Glenn
Alcon Laboratories Inc.
Alcon Manufacturing Ltd.
Kirby Eades Gale Baker
LandOfFree
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