JPH11299811A - Dental treatment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sterilize a water circuit on the side of an instrument and to protect the water circuit from erosion or deterioration by allowing a switching means to freely switchably connect a sterilized water generator and a washing water replenishing circuit to a circuit for filling the water circuit of the instrument with sterilized water. SOLUTION: Washing water (running water) is supplied for the sterilized water generator 14 from the water circuit 31 through a water path 30 and sterilized water generated here is supplied for respective instruments such as air turbine hand pieces 5, 6, a micro-motor hand piece 7, a scaler 8 by way of valves 17 to 21, a branching tool 26 and the water circuit 28 of a discharging device through the water circuit 29 of sterilized water. Then, after finishing treatment, in order to prevent the water circuit, etc., from erosion or deterioration by sterilized water, a linear actuator 16 is operated to temporarily empty sterilized water from the water circuit and the inside of the water circuit is filled with washing water. Switching like this is executed under control by a water circuit switch controlling part 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to sterilization and prevention of corrosion of an instrument water circuit in a dental chair unit, and more particularly to a dental treatment apparatus which can be carried out with an instrument set in a holder.

[0002]

2. Description of the Related Art Conventionally, in a water treatment apparatus in a water circuit, the discharge and suction tube connection ends in the water circuit are collectively set in a water treatment unit, and sterilizing water and water discharged from the unit are suctioned. There is a mechanism that drains water to sterilize the water circuit and prevent corrosion and deterioration. In addition, the water circuit for water supply for the cup and for washing the spitton has been washed by simply flowing water.

[0003]

However, in the above mechanism, a water treatment unit for collectively setting the discharge and suction tube connection ends in addition to the switching control unit for sterilizing water and washing water is provided. In addition, in order to select the installation location and sterilize the water circuit and prevent corrosion, it was necessary to collectively set and operate the discharge and suction tube connection ends in the water treatment unit. In addition, there was no sterilization of the water supply circuit for cups and the water circuit for washing the spitton with sterilized water. In the present invention, an apparatus for solving the above-mentioned problems is provided.

[0004]

Means for Solving the Problems In view of the above, the present inventors have conducted intensive studies and as a result, have solved the above-mentioned problems by the following means. (1) In the water circuit processing mechanism of the dental chair unit, a control circuit for filling the water circuit of the instrument with sterilizing water, a control circuit for once transferring the filling to the sterilizing water generating device side, A dental treatment apparatus comprising: an empty water circuit on the instrument side, a control circuit for filling with washing water, and a switching means for switching between these circuits. (2) The dental as described in (1), wherein the instrument performs sterilization of the water circuit and prevention of corrosion and deterioration while the instrument is installed in the instrument holder. Treatment device. (3) The dental treatment apparatus according to claim 1, wherein a water circuit for supplying water to the cup and for washing the spitton of the dental chair unit is provided to be branched from a supply circuit for sterilizing water and washing water.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, a sterilizing water generator for a water circuit, a water circuit switching control section, a water circuit switching valve and the like are housed inside a chair pedestal of a chair unit. While the instrument is housed in the instrument holder as before, the water circuit is sterilized and corrosion and deterioration are prevented. Further, a water circuit for water supply for the cup and for washing the spitton is housed inside the spitton. Hereinafter, the structure and operation will be described with reference to the drawings.

[0006]

FIG. 1 is a perspective view showing the external appearance of a dental treatment apparatus accommodating the apparatus of the present invention. In the drawing, 1 is a chair unit, 2 is a bracket table, 3 is an instrument holder, 4 is a chair pedestal, 5 and 6 are air turbine handpieces, 7 is a micromotor handpiece, 8 is a scaler, and 9 is a three-way syringe. Each instrument,
Reference numeral 10 denotes a chair, 11 denotes a spitton, 12 denotes an auxiliary table, 43 denotes a cup water supply pipe, 44 denotes a cup opening, 45 denotes a spitton washing pipe, and 46 denotes a spitton discharge hole. The sterilizing water generator for the water circuit, the water circuit switching control unit, the water circuit switching valve, and the like (described later) are housed inside the chair pedestal 4 of the chair unit. In addition, the instruments of the air turbine handpieces 5, 6, the micromotor handpiece 7, the scaler 8, and the three-way syringe 9 of the instrument are stored in the instrument holder 3 as shown in the drawing. In addition, sterilization in the water circuit and corrosion and deterioration due to oxidation are prevented. Also,
The water circuits for the cup water supply 35 and the spitton wash 36 are housed inside the spitton.

FIG. 2 shows a block diagram of the apparatus of the present invention. The operation will be described below with reference to the drawings. In the figure,
13 is the inflow direction of washing water (tap water), 14 is a sterilizing water generator, 15 is a water circuit switching control unit, 16 is a linear actuator, 17, 18, 19, 20, 21 are valves, 22,
23, 24, 25 and 42 are solenoid valves, 26 is a branching tool, 27 is a check valve, 28 is an instrument water circuit, 30 and 31 are washing water circuits, 33 and 34 are two-way switches, Numeral 35 denotes a cup water supply circuit, numeral 36 denotes a spitton wash water circuit, numeral 37 denotes a water supply pipe, numeral 38 denotes a drain pipe, numeral 39 denotes a direction of discharge to an external discharge pipe, and numerals 40 and 41 denote check valves.

First, the operation of the discharge-side water circuit will be described.
The solenoid valves 22 to 25 and 42 of the water circuit 31 are closed, and the check valve 27 prevents sterile water from flowing. The washing water flows in the washing water (tap water) flow direction 13 and is supplied to the sterilizing water generator 14 through the washing water channel 30. The germicidal water generated here passes through the germicidal water circuit 29 by the linear actuator 16 to the valves 17 to 21 and the branching tool 2.
6, and the water turbine 28 of the discharger is supplied to the instruments of the air turbine handpieces 5, 6, the micromotor handpiece 7, the scaler 8, and the three-way syringe 9 so that the practitioner can use the instruments. By turning on a changeover switch (not shown) in the vicinity, sterilized water can be discharged. The above is the use state at the time of treatment, in which the water circuit is filled with sterile water and is always in a sterilized state.

Next, in order to prevent the water circuit from being corroded or deteriorated due to oxidation by the sterilizing water (for example, soft acid water) after the treatment is completed, the sterilizing water in the water circuit is replaced with the linear actuator. Activate 16 to transfer and empty the water circuit once. At this time, the instruments 5 to 9 are housed in the instrument holder 3, and the switch at hand is turned off.
F (not shown). And valves 17-2
When 1 is closed, sterilizing water may remain between the linear actuator 16 of the generator 14 and the valves 17 to 21, but the water circuit between them is made of a material that is not oxidized, such as vinyl chloride. No measures are required to prevent deterioration.

As a measure for preventing corrosion or deterioration of the empty water circuit on the instrument side due to oxidation as described above, first, water flowing into the water circuit 31 of the cleaning water is supplied to the solenoid valve. 22 to 25 and 42 are opened and supplied to the empty instruments 5 to 9 of the instrument side water circuit via the branching tool 26. Thus, since the water circuit is filled with the washing water, even if the sterilizing water slightly remains, the water is diluted, the degree of oxidation is small, and the purpose of preventing corrosion and deterioration of the water circuit can be achieved. it can. The opening and closing of the linear actuator 16, the valves 17 to 21, the solenoid valves 22 to 25, 42, and the like of the water circuit described above at the timings
It is operated by the operation of the water circuit switching control unit 15. The above is the description of the processing on the instrument side.

Next, the operation of the cup water supply and spit washing water circuits will be described. In the figure, at the time of sterilization, the two-way switch 34 connected to the water circuit of the washing water is closed, and the two-way switch 33 is open. And it is supplied to the water circuit of the spitton washing 36. The sterilizing water flows through the water circuit to the drain pipe 38 and is discharged as shown in a discharge direction 39 to the external discharge pipe, and the water circuit is sterilized. After the above operation, the two-way switch 33 is closed and the two-way switch 34 is opened, and the washing water is supplied to the water circuits of the cup water supply 35 and the spitton wash 36. The washing water flows through the water circuit to the discharge pipe 38, and is discharged in the discharge direction 39 to the external discharge pipe. The water circuit is washed, and corrosion and deterioration due to oxidation of the water circuit are prevented. I have. The check valves 40 and 41 prevent mixing of the supply of washing water and sterilizing water in the instrument-side water circuit, the cup water supply, and the spitton-washing-side water circuit. The above operation timing is performed in synchronization with the operation of the drainer-side water circuit.

[0012]

According to the present invention, the following excellent effects are exhibited. According to the first and second aspects of the present invention, in the water circuit processing mechanism of the dental chair unit, a circuit for filling a water circuit in the instrument with sterilizing water, It consists of a circuit that is once transferred to the sterilizing water generator and empties it, and a switching control circuit that fills the emptied water circuit on the instrument side with cleaning water. With the circuit, with the instrument set in the instrument holder,
Sterilization and prevention of corrosion and deterioration due to oxidation can be performed. 2. According to the invention of claim 3 of the present invention, in the chair unit, the cup water and the water for cleaning the spitton are provided separately from the sterilizing water for the instrument and the cleaning water circuit. Can be sterilized, and corrosion and deterioration due to oxidation can be prevented.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a dental treatment device containing a device of the present invention.

FIG. 2 is a block diagram of the apparatus of the present invention.

[Explanation of symbols]

1: Chair unit 2: Bracket table 3: Instrument holder 4: Chair pedestal 5, 6: Air turbine handpiece 7: Micromotor handpiece 8: Scaler 9: Three-way syringe 10: Chair 11: Spitton 12: Auxiliary Table 13: Inflow direction of washing water 14: Sterilized water generator 15: Water circuit switching control unit 16: Linear actuator 17, 18, 19, 20, 21: Valve 22, 23, 24, 25: Solenoid valve 26: Branching tool 27: Check valve 28: Water circuit of discharger 30, 3
1: Water circuit of washing water 33, 34: Two-way selector 35: Cup water supply circuit 36: Spitton washing water circuit 37: Water supply pipe 38: Drain pipe 39: Discharge direction to external discharge pipe 40, 41: Non-return Valve 42: Solenoid valve 43: Cup water supply pipe, 44: Cup opening, 45: Spitton washing pipe, 46: Spitton discharge hole

Claims (3)

[Claims] 1. A water circuit processing mechanism of a dental chair unit, wherein a control circuit that fills a water circuit of an instrument with sterilizing water, a control circuit that once transfers the filling to a sterilizing water generating device side, The water circuit on the instrument side that has been emptied after the transfer has a control circuit that is filled with wash water,
A dental treatment apparatus further comprising switching means for the circuits. 2. The apparatus according to claim 1, wherein the instrument is used for sterilizing the water circuit and preventing corrosion and deterioration while the instrument is installed in the instrument holder. Dental treatment equipment. 3. The dental chair unit according to claim 1, wherein a water circuit for watering the cup and for cleaning the spitton is branched from a supply circuit for sterilizing water and cleaning water.
A dental treatment apparatus according to claim 1.