METHOD AND SYSTEM FOR OPERATING A MEDICAL, IN PARTICULAR A DENTAL HANDPIECE

WIPO Patent Application WO/2011/000912

A3

The invention relates to a method and a corresponding system for operating a dental handpiece, wherein the handpiece comprises a motor for driving a tool. The method comprises the following steps: (a) sequential capturing of values of a physical parameter, which - at least approximately - represent the power or energy fed to the motor (lower diagram), (b) forming an integration value by integrating the values captured in (a) (upper diagram), and (c) automatically reducing a power or energy fed to the motor if the integration value formed in (b) exceeds an upper threshold value (point in time C). The integration value formed in step (b) represents a measure of the power integrated over time and can thus be used at least approximately as a measure of the temperature of the instrument. The automatic reduction in the power or energy fed to the motor performed in step (c) can therefore effectively act against a further increase in temperature or allow cooling if the temperature of the instrument exceeds an upper threshold value. In this manner, the risk of damage due to excessive temperature of the instrument can be effectively reduced.

SAUTER JOHANNES (DE)
HECKENBERGER HANS (DE)
GUGEL BERND (DE)

PCT/EP2010/059365

March 31, 2011

July 01, 2010

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KALTENBACH & VOIGT (DE)
SAUTER JOHANNES (DE)
HECKENBERGER HANS (DE)
GUGEL BERND (DE)

A61B17/16; A61C1/00

EP1917930A2	2008-05-07
US20080015551A1	2008-01-17
US20080145817A1	2008-06-19
EP1733694A1	2006-12-20
DE102008009623A1	2009-08-20
EP1547565A2	2005-06-29
US5268622A	1993-12-07
US20050131415A1	2005-06-16

THUN, Clemens (Patent- und RechtsanwälteSonnenstraße 33, München, DE)

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