Ultrasonic wave tooth-cleaning machine with an automatic switch

Abstract

The invention relates to an ultrasonic tooth cleaning machine with automatic switch, wherein an electric conductor which is connected with a main frame contacts human body; when a working tip contacts tooth, a main frame circuit, a conducting wire and the human body tissue between the working tip or a root canal broach and the electric conductor form into a loop impedance. Operating state of main frame is controlled through detecting loop impedance or relative value of the loop impedance in response to certain current signal: when the main frame is in tooth cleaning state, the main frame is started to work once the working tip contacts tooth, while the working tip moves away from tooth, the main frame stops working; when the main frame is in root canal measuring state, the working tip is replaced by the root canal broach to prepare for root canal expansion; meanwhile, measuring and display of the length of tooth root canal and working status control of the main frame are completed through detecting loop impedance or relative value of the loop impedance in response to certain current signal. In addition, a denture palate rack is arranged and is provided with a spittle suction pipe and a light-emitting diode (LED), wherein effective illumination of oral cavity is realized by the LED, while flushing fluid inside oral cavity is discharged through the spittle suction pipe.

Description

Technical field [0001] The invention relates to a medical dental cleaning instrument, in particular to an ultrasonic tooth cleaning machine with an automatic switch. Background technique [0002] Ultrasonic dental scaler is a dental cleaning appliance used to remove dental calculus, smoke spots, bacterial plaque, etc. Some imported dental scalers can be replaced with root canal needles to prepare and expand the root canal of the tooth, but it must be equipped additionally when measuring the root canal Root canal length measuring instrument, in the process of root canal expansion, the use of root canal length measuring instrument should be interrupted many times to measure the length, root canal expansion and measurement cannot be effectively combined. At present, the ultrasonic scaler is mainly composed of a host, a foot switch, a handle connection, a handle and a working tip to form an overall structure. The transducer and the horn are installed in the handle, and the work...

AI Technical Summary

Problems solved by technology

The doctor controls the on-off of the power supply of the main unit through the foot control switch to carry out the cleaning work, and needs to use another light source for lighting. The patient opens his mouth to let the doctor perform the cleaning operation. The defect of this structure is that the doctor will easily cause fatigue when using the foot control for a long time. Moreover, the length of the root canal cannot be effectively controlled when the root canal is enlarged, the external

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