Patent ID: 7211220
Filing Date: 2007-05-01
Classification: A61C

Abstract:
1. A method for cleaning and disinfecting or sterilizing the water circuits ( 1 ) of dental units ( 100 ), where the water circuit ( 1 ) of the dental unit ( 100 ) comprises a main conduit ( 2 ) for supplying a user fluid from a mains supply ( 7 ) to a plurality of branches ( 3 ) equipped with shutoff means ( 5 ), said plurality of branches ( 3 ) for supplying corresponding medical instruments ( 4 ) having endpieces ( 3 a ), the method comprising: introducing a cleaning and disinfecting or sterilizing fluid into the water circuit ( holding the cleaning and disinfecting or sterilizing fluid in the water circuit ( draining the cleaning and disinfecting or sterilizing fluid out of the circuit ( wherein the method further comprises a step of programming a contact time period T for the combined steps of introducing and holding the fluid in the water circuit ( wherein each contact time period T is defined by the equation