Patent ID: 6685667
Filing Date: 2004-02-03
Classification: A61M,G01P,H01H

Abstract:
A surgical irrigator comprising in combination, a pumping unit having an outlet, a handpiece, and tubing connecting the outlet of said pumping unit to said handpiece, said handpiece including an irrigation valve, said pumping unit including an impeller, batteries, upper and lower contacts for engaging the terminals of said batteries, and a battery powered motor for driving the impeller, an optical flow sensor for sensing liquid flow through said tubing when said irrigation valve is open, means responsive to said optical sensor for turning said motor on to drive said impeller, a manually operable switch for selectively moving at least one of the batteries out of electrical contact with one of its associated contacts, said manually operable switch including a rotatable arm and camming means responsive to rotation of said arm for moving said one battery.