KR20240044137A - Cooling water supply device for dental handpiece with antibacterial activity - Google Patents

Abstract

The present invention relates to a dental handpiece cooling water supply device capable of imparting antibacterial activity, comprising: a dental handpiece (10); A driving unit 20 that drives the handpiece 10; A water supply unit 40 that supplies cooling water to cool the handpiece 10 and the drive unit 20; And a drug supply unit (30) that mixes a drug with antibacterial properties with the spray water supplied from the water supply unit and sprayed in a spray form from the handpiece (10) and supplies it to the handpiece (10), wherein the drug includes collagen and EGCG. (epigallocatechin-3-gallate); Features:

Description

Cooling water supply device for dental handpiece capable of imparting antibacterial activity {Cooling water supply device for dental handpiece with antibacterial activity}

The present invention relates to a dental handpiece coolant supply device capable of imparting antibacterial activity.

Dental instruments, including handpieces, used during dental treatment can generate a large amount of droplets inside and outside the patient's mouth during the treatment process.

The cause of such droplet generation is the coolant flowing in from dental instruments used during dental treatment and the patient's saliva. Here, distilled water, saline water, tap water, etc. are used as coolants.

At this time, microorganisms present in the patient's mouth can be spread through droplets to the air outside the oral cavity and surfaces of the surrounding environment, and cross-infection between medical staff or patients can be caused by microorganisms spread through droplets.

KR 10-2018-0026449 A(2018.03.12, open)

Therefore, the present invention was devised to solve the above-described conventional problems, and the purpose of the present invention is to prevent the spread of bacteria inside and outside the oral cavity due to droplet diffusion due to aerosol of coolant generated during use of the handpiece. To provide a dental handpiece cooling water supply device capable of imparting antibacterial activity.

The present invention may include the following examples to achieve the above object.

An embodiment of the present invention relates to a dental handpiece, a driving unit that drives the handpiece, a water supply unit that supplies cooling water to cool the handpiece and the driving unit, and spray water supplied from the water supply unit and sprayed from the handpiece in a spray form. It includes a drug supply unit that mixes drugs with antibacterial properties and supplies them to the handpiece, and the drug is characterized in that it is either collagen or EGCG.

Here, the drug supply unit includes a drug supply means that accommodates a powder-type drug, a first valve that discharges a fixed amount of the drug from the drug supply means, and a handpiece that mixes the spray water supplied from the water supply unit and the drug discharged from the drug supply means. It may include a stirring tank discharged to a discharge pipe connected to the side and a temperature control means for controlling the temperature within the stirring tank.

Additionally, in the above embodiment, the drug supply unit may further include a spray water storage means for storing unused mixed spray water mixed with the drug remaining in the stirring tank.

In addition, in the above embodiment, the drug supply unit includes a second valve that opens and closes the supply pipe connected from the water supply unit to the stirring tank, and a third valve that selectively opens and closes the input pipe of the spray water storage means and the handpiece side discharge pipe. and a fourth valve that opens and closes the discharge pipe connected from the spray water storage means to the stirring tank.

In the above embodiment, the water supply unit further includes a coolant supply means for cooling the handpiece and the drive unit, and the cooling pipe extending from the coolant supply means and moving the coolant inside is a discharge pipe extending from the stirring tank toward the handpiece. It is extended to fit closely so that the spray water in the discharge pipe can be cooled.

Therefore, the present invention can impart antibacterial activity to the cooling water supplied to the handpiece 10, thereby suppressing the spread of bacteria in the oral cavity and preventing cross-infection between medical staff or patients.

1 is a block diagram briefly showing the configuration of the present invention.
Figure 2 is a block diagram showing the detailed configuration of the drug supply unit and the water supply unit.
Figure 3 is a flowchart showing a method of operating a dental handpiece cooling water supply device capable of imparting antibacterial activity according to the present invention.
Figure 4 is a flow chart showing the process of using stored spray water.
Figures 5 and 6 are graphs measuring the number of bacterial growths at different temperatures in collagen-containing foods.

Although the present invention may be subject to various changes and may have various embodiments, specific embodiments will be described in detail by illustrating them in the drawings. This is not intended to limit the present invention to specific embodiments, and is not intended to limit the present invention to any of the changes, equivalents, or substitutes included in the spirit and scope of the present invention for connecting and/or fixing structures extending in different directions. It must be understood as applicable.

The terms used herein are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this specification, terms such as “comprise” or “have” are intended to indicate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that it does not exclude in advance the existence or possibility of addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings.

FIG. 1 is a block diagram briefly showing the configuration of the present invention, and FIG. 2 is a block diagram showing the detailed configuration of the drug supply unit 30 and the water supply unit 40.

Referring to Figures 1 and 2, the present invention includes a handpiece 10, a driving unit 20 that drives the handpiece 10, and medicinal water sprayed from the handpiece 10 in the form of a spray (hereinafter referred to as spray). It includes a chemical supply unit 30 that supplies spray water (referred to as water), and a water supply unit 40 that supplies spray water and cooling water.

The handpiece 10, for example, is a dental handpiece 10 and is operated by power generated from the driving unit 20. Here, the handpiece 10 may be a dental handpiece 10 used for straightening teeth, extracting teeth, or reinforcing damaged teeth. In addition, the handpiece 10 has at least one of the water discharged to cool the heat when friction occurs between the work object and the tab of the handpiece 10 during work, and the coolant that can cool the heat of the handpiece 10 itself. You can get one. Since this dental handpiece 10 is generally known, its description is omitted.

The driving unit 20 includes one of a motor that operates the handpiece 10 and a pressure compressor for pressure discharging the spray water.

The drug supply unit 30 mixes the spray water with a drug capable of imparting antibacterial properties and supplies the spray according to set conditions. The detailed configuration of this drug supply unit 30 will be described later with reference to what is shown in FIG. 2.

The water supply unit 40 may include a spray water supply means and a coolant supply means 420 that supply spray water and coolant to prevent heat generation in the motor, handpiece 10, etc.

Here, the spray water is cooling water that scatters to the outside of the handpiece (10) to remove heat generated due to friction between the teeth and the fixture that cuts the teeth, and the coolant is cooling water to prevent overheating of the handpiece (10) itself. .

Hereinafter, the drug supply unit 30 and the water supply unit 40 will be described in more detail.

First, the drug supply unit 30 includes a drug supply means 310 for supplying a powder-type drug, a stirring means 320 for mixing the drug and spray water, a plurality of valves for opening and closing the pipe, It includes a spray water storage means 340 that stores the remaining amount of spray water that is not supplied in the stirring means 320.

In addition, the drug supply unit 30 includes a plurality of sensors 361, a display 362, an alarm 363 for issuing an alarm, an input means 364 for outputting an input command, and a controller for outputting a control command ( 365).

Among them, the medicine supply means 310 can supply a set amount of medicine in powder form to the stirring means 320. For example, the drug supply means 310 is discharged to the stirring means 320 through the first valve 331 opened under the control of the controller 365. Here, the first valve 331 may be a pneumatic discharge valve that discharges a set amount.

Here, the drug may be either collagen or EGCG (epigallocatechin-3-gallate). Alternatively, ethanol may be added together with EGCG (epigallocatechin-3-gallate).

The stirring means 320 may include a stirring tank 321, a stirring blade 322, and a temperature control means 323.

The stirring tank 321 accommodates the spray water supplied through the spray water supply means and the medicine supplied from the medicine supply means 310.

The stirring blade 322 is rotated within the stirring tank 321 to mix the spray water and the chemical.

The temperature control means 323 can maintain the temperature inside the stirring tank 321 within a set temperature range. For example, the temperature control means 323 is a heater that heats the spray water to maintain the temperature in the range of 30 to 60° C. to facilitate mixing of the spray water and collagen in the stirring tank 321.

The spray water storage means 340 stores the remaining spray water in the stirring means 320. For example, the spray water storage means 340 may include a pump capable of sucking the spray water remaining in the stirring tank 321 and a storage tank for storing the spray water sucked in by the pump.

Here, the spray water storage means 340 may further include a cooling means to maintain the spray water at a low temperature (e.g., 10° C. or lower) to prevent changes in the properties of the spray water mixed with the chemicals stored in the storage tank. there is.

That is, the spray water storage means 340 separately stores the unused mixed spray water remaining in the stirring tank 321, and can be re-supplied to the stirring tank 321 under the control of the controller 365.

The plurality of valves 331 to 334 include a first valve 331 installed between the chemical supply means 310 and the stirring tank 321, a second valve 332 that opens and closes the supply pipe for supplying spray water, and , a third valve 333 that selectively opens and closes the input pipe 342 of the spray water storage means 340 and the discharge pipe 351 on the handpiece 100 side, and the discharge pipe of the spray water storage means 340 ( It may include a fourth valve 334 that opens and closes 342).

Among them, the first valve 331 may be a fixed-quantity discharge valve that discharges a set amount of powder-type medicine as described above.

The second valve 332 opens and closes the pipe extending from the spray water supply means 410 to the stirring tank 321.

The third valve 333 is between the discharge pipe 351 that extends from the stirring tank 321 and discharges the spray water mixed with the medicine toward the handpiece 10 and the input pipe 341 of the spray water storage means 340. is selectively defeated. For example, the third valve 333 opens the discharge pipe 351 to discharge spray water toward the handpiece 10, and blocks the discharge pipe 351, but the input pipe of the spray water storage means 340 ( 341) can be opened to transfer unused mixed spray water remaining in the stirring tank 321 to the spray water storage means 340.

The fourth valve 334 opens and closes the discharge pipe 342 extending from the spray water storage means 340 to the stirring tank 321. For example, the fourth valve 334 may open the discharge pipe 342 of the spray water storage means 340 so that the mixed spray water discharged from the spray water storage means 340 moves to the stirring tank 321. there is.

Here, the first valve 331 to the fourth valve 334 may be operated under the control of the controller 365.

In addition, a cooling pipe 421 extends from the cooling water supply means 420 and moves the cooling water on the outer peripheral surface of the discharge pipe 351 that extends toward the handpiece 10 in the stirring tank 321 and discharges the spray water mixed with the medicine. ) may be configured to be in close contact with or wrapped around the outer circumferential surface.

The cooling pipe 421 extends in close contact with or wrapped around the outer peripheral surface of the spray water discharge pipe 351 and may serve to lower the temperature of the spray water in the discharge pipe 351.

This is to lower the temperature to an appropriate temperature (e.g., 20 to 40° C.) when the spray water is heated (e.g., 30 to 80° C.) and sprays into the oral cavity during the mixing process of the spray water and the drug. This is because the spray water is heated in the oral cavity. This is to prevent burns or unpleasant sensations caused by spray water.

The sensor 361 is composed of a plurality of sensors 361 that detect at least one of the storage quantity of the spray water storage means 340 and the stirring tank 321, temperature, and drug concentration in the mixed spray water.

The sensor 361 is, for example, the remaining water quantity or water level in the stirring tank 321, the temperature of the spray water in the stirring tank 321, the temperature and quantity and/or water level of the spray water in the spray water storage means 340, Among the drug concentration of the spray water mixed with the drug in the stirring tank 321, the storage weight of the drug supply means 310, the supply amount of spray water supplied from the spray water supply means 410, and the supply amount of the cooling water supply means 420 At least one is detected and output to the controller 365.

The display 362 displays information such as the sensed information of the sensor 361 and the current state (e.g., spray mixing state, remaining and/or stored water quantity of spray water, temperature of spray water, and chemical concentration of spray water). It can be included.

Alarm 363 issues a visual and/or audible alert under the control of controller 365.

Here, the alarm 363 can output text and luminous signals through the display 362 and an alarm through a speaker.

The input means 364 consists of a plurality of switches and outputs a command set for each switch or a combination of switches. Preferably, the input means 364 may be a touch-type display 362 integrated with the display 362.

Alternatively, the input means 364 may be a separate input switch separate from the display 362 and may include a switch that outputs an on-off command for the handpiece 10.

Here, the input means 364 may output an operation command for the handpiece 10.

The controller 365 may control a plurality of valves according to detection signals from the input means 364 and/or the sensor 361. For example, the controller 365 controls the first valve 331 to discharge the drug stored in the drug supply means 310 to the stirring tank 321 and opens the second valve 332 to supply spray water. Spray water is supplied from the means 410 to the stirring tank 321.

In addition, the controller 365 controls the third valve 333 to supply the spray water mixed in the stirring tank 321 to the handpiece 10, or to supply the spray water remaining in the stirring tank 321. It is supplied to the spray water storage means (340).

That is, the third valve 333 is connected to one of the discharge pipe 351 extending from the outlet side of the stirring tank 321 to the hand piece 10 side and the input pipe 341 of the spray water storage means 340. You can enable or block it.

In addition, the controller 365 operates the first valve 331 and the second valve 332 according to the drive command input from the input means 364, and controls the stirring blade 322 and the temperature control means 323. Thus, the stirring means 320 can be controlled to mix the drug with the spray water.

In addition, after mixing the medicine and the spray water, the controller 365 controls the third valve 333 to discharge the spray water mixed with the medicine to the handpiece 10.

In addition, when the off command of the input means 364 is input, the controller 365 turns off the first valve 331 and the second valve 332 and controls the third valve 333 to open the stirring tank 321. The discharge pipe of is connected to the spray water storage means 340 to discharge the mixed spray water remaining in the stirring tank 321 to the spray water storage means 340.

In addition, when a drive command is input from the input means 364, the controller 365 opens the fourth valve 334 and sprays the spray water mixed with the medicine stored in the spray water storage means 340 into the stirring tank 321. Control the discharge to . Here, the controller 365 supplies the spray water mixed with the drug to the stirring tank 321 and then controls the first valve 331 and the second valve 332 to supply the drug and spray water to the stirring tank 321. You can. That is, the controller 365 can fill previously unused drug mixing spray water with spray water and drugs and then supply them to the handpiece 10.

The present invention includes the above-described configuration, and hereinafter, a method of supplying coolant to a dental handpiece capable of imparting antibacterial activity, achieved through the above-described configuration, will be described.

The present invention may be comprised of the steps of mixing a medicine with spray water and supplying it to the handpiece 10, and filling the unused mixed spray water stored in the spray water storage means 340 with the spray water and medicine. there is. The step of mixing medicine with double spray water and supplying it to the handpiece 10 will be explained with reference to FIG. 3, and the step of supplying unused spray water to the handpiece 10 will be explained with reference to FIG. 4.

Figure 3 is a flowchart showing a method of operating a dental handpiece cooling water supply device capable of imparting antibacterial activity according to the present invention.

Referring to Figure 3, the present invention includes a step S110 of controlling the temperature of the stirring tank 321 supplied with spray water, a step S120 of supplying and stirring the powder, and a step S130 of supplying the powder to the handpiece 10, When an off command is input, it includes step S140 of detecting and discharging the remaining amount of spray water in the stirring tank 321, and step S150 of storing unused mixed spray water at low temperature.

In step S110, when a drive command is input from the input means 364, the controller 365 fills the stirring tank 321 with spray water and adjusts the temperature of the stirring tank 321. When a drive command is input from the input means 364, the controller 365 controls the second valve 332 to supply the spray water stored in the spray supply means to the stirring tank 321. At this time, the controller 365 may check the amount of spray water in the stirring tank 321 through the sensor 361 and, if it exceeds the set standard, control the second valve 332 to block the supply of spray water.

In addition, the controller 365 operates the temperature control means 323 to heat the spray water in the stirring tank 321 so that it reaches the set reference temperature.

In step S120, when the temperature of the spray water in the stirring tank 321 reaches the set reference temperature, the controller 365 operates the first valve 331 to control the injection of powder-type medicine into the stirring tank 321. It's a step. The first valve 331 is operated under the control of the controller 365 to discharge a set amount of medicine into the stirring tank 321. At this time, the first valve 331 can automatically operate the set quantity at each set time period to inject the medicine into the stirring tank 321.

Additionally, the controller 365 controls the stirring blade 322 to mix the drug with the spray water.

In step S130, the discharge pipe from the outlet of the stirring tank 321 to the handpiece 10 is opened under the control of the controller 365, and the mixed spray water mixed in the stirring tank 321 is transferred to the handpiece 10. This is the supply stage. The controller 365 controls the third valve 333 to connect the discharge pipe on the handpiece 10 side and the stirring tank 321. Therefore, the mixed spray water in the stirring tank 321 is supplied to the handpiece 10.

Therefore, when the user operates the handpiece 10, a mixed spray containing antibacterial properties by mixing collagen or EGCG can be discharged. A mixed spray containing such drugs is dispersed in the form of droplets, but has antibacterial properties due to drugs such as collagen or EGCG, thereby preventing cross-infection due to droplet spread in hospitals as in the past.

In step S140, the controller 365 detects the remaining amount in the stirring tank 321 in real time through the detection information of the sensor 361, and discharges the remaining amount into the spray water storage means 340 when an off command is input. .

Here, step S140 is an embodiment in which supply from the spray water supply means and discharge to the handpiece 10 are carried out simultaneously, and when the spray water is charged in the stirring tank 321 by a set amount, the supply pipe of the spray water supply means is blocked. It can be configured as another embodiment to be supplied to the handpiece 10 later.

In one embodiment, after the second valve 332 is opened under the control of the controller 365, a certain amount of spray water is charged in the stirring tank 321, and the medicine equipped with the first valve 331 is mixed and stirred. At the same time, the third valve 333 is opened to simultaneously supply spray water, drug mixing, and drug-mixed spray water in the stirring tank 321.

Therefore, when an off command is input, the controller 365 blocks the first valve 331 and the second valve 332 and then controls the third valve 333 to control the spray water storage means 340 and the stirring tank 321. ) Open the pipe between the liver and discharge the remaining amount.

In another embodiment, the medicine is mixed in a state in which the supply pipe connected from the spray water supply means 410 is blocked, and the spray water is not filled until all the mixed spray water in the stirring tank 321 is discharged. That is, the controller 365 first blocks the second valve 332 to block the supply of spray water, opens the first valve 331 to mix the drug and spray water, and then opens the first valve 331 again. Block the supply of spray water and chemicals.

And the controller 365 controls the third valve 333 to be connected to the discharge pipe on the handpiece 10 side to discharge the mixed spray water.

At this time, the controller 365 checks the remaining amount of mixed spray water in the stirring tank 321 in real time through the sensor 361 and determines resupply of spray water and chemicals depending on whether an off command is given.

Therefore, when an OFF command is input from the input means 364, the controller 365 controls the third valve 333 to discharge the remaining amount into the 889998th level of the spray water storage water.

Step S150 is a step in which the controller 365 controls the spray water storage means 340 to store unused spray water at low temperature. Here, the spray water storage means stores unused spray water introduced through the input pipe at a low temperature (for example, 0 to 15°C).

Here, unused spray water is preferably stored at a temperature of 3 to 8°C when collagen is mixed. This is according to the results of an experiment, which was confirmed through the results of an experiment on bacteria at different storage temperatures of foods containing collagen.

For example, foods containing collagen extracted from fish were stored at 4-6°C for 6 days, and bacterial counts were measured every 48 hours.

The measurement results are as shown in the graph in FIG. 5. Looking at the graph in Figure 5, five types of collagen-containing foods were stored at various temperatures and changes in the number of bacteria were measured. As a result of storage at 4℃ for 6 days, the number of S. aureus and Salmonella bacteria in Samgyetang, Ugeultang, Odolbone, Jeonyak, and Jokbal showed no change during the storage period. Considering this, unused spray water can also be considered microbiologically safe at a storage temperature of 4℃.

In addition, in the case of 10°C, the number of bacteria was measured every 48 hours while being stored for 6 days in the same manner as at 4°C, and the results are shown in the graph in FIG. 6.

Referring to Figure 6, the bacterial count of Salmonella grew to about 9 log CFU/ml in samgyetang and pig's trotters stored at 10°C, and the odolbone and jeonyak showed no change in bacterial count.

When looking at the storage results at 10℃, bacterial growth patterns were observed to be different for each collagen-containing food, but samgyetang and pig's feet showed a tendency to grow compared to other foods, suggesting that microbial growth is possible at a low temperature such as 10℃. It is considered food.

Considering this, it is believed that unused spray water can maintain antibacterial properties even at a temperature of 10°C when there is no medium such as food necessary for the growth of bacteria.

It appears that the results of storage at 20℃ can yield different results depending on the type of food, like the results of storage at 10℃.

The error in these results may vary depending on the degree of combination of food (e.g., ingredients, external additives (seasonings and seasonings) and collagen), but the storage temperature of 20℃ is also suitable for foods that maintain antibacterial properties (e.g. , it is believed that the antibacterial properties of collagen can be maintained due to the presence of the drug.

Therefore, it is believed that the storage and/or storage temperature of unused mixed spray water can range from 3 to 20°C.

Figure 4 is a flow chart showing the process of using stored spray water.

Referring to Figure 4, the present invention includes a step S210 of detecting the amount of unused spray water, a step S220 of supplying unused spray water to the stirring tank 321 and detecting the viscosity and/or concentration of the drug, spray water and It includes a step S230 of supplying a drug, and a step S240 of supplying mixed spray water to the handpiece 10 after stirring.

Step S210 is a step in which the controller 365 detects the amount of unused spray water stored in the spray water storage means 340 from the sensor 361.

Step S220 is a step in which the controller 365 detects the viscosity or concentration of the agent mixed in the unused spray stored in the spray water storage means 340. Here, unused spray water may affect the activation of antibacterial properties depending on the concentration or viscosity of EGCG or collagen. Therefore, the sensor 361 measures the viscosity of unused spray water or the concentration of the agent.

Step S230 is a step in which the controller 365 sequentially controls the first valve 331 and the second valve 332 to add new spray water and chemicals into the stirring tank 321. For example, if the concentration of the chemical in the unused mixed spray water re-supplied in the stirring tank 321 is higher than the set standard, the controller 365 reduces the supply of the chemical instead of increasing the supply amount of spray water.

At this time, the controller 365 drives the temperature control means 323 to increase the temperature in the stirring tank 321 to the set stirring temperature, and then drives the stirring blade 322 to mix the introduced chemical and spray water with the previously unused spray water. Mix.

In step S240, the controller 365 controls the third valve 333 to open the discharge pipe between the stirring tank 321 and the handpiece 10 to supply mixed spray water to the handpiece 10. Here, the controller 365 controls the second valve 332 and the first valve 331 to block the supply of spray water and chemicals, and opens the third valve 333 to release the mixed spray water in the stirring tank 321. can only be supplied.

Alternatively, the controller 365 opens the third valve 333 while the first valve 331 and the second valve 332 are opened and the drug and spray water are continuously supplied to supply the mixed spray water to the handpiece 10. can be supplied. At this time, the controller 365 preferably opens the third valve 333 after a set delay time has elapsed after the start of stirring.

The present invention can be applied to the dental handpiece 10 or the handpiece 10 used in other fields as in the above-described embodiment, and can prevent heat generation between fixtures and objects, which is the original purpose, and at the same time prevent cross-infection. You can.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements made by those skilled in the art using the basic concept of the present invention defined in the following claims are also possible. It falls within the scope of rights.

Those skilled in the art related to this embodiment will understand that the above-described base material can be implemented in a modified form without departing from the essential characteristics. Therefore, disclosure methods should be considered from an explanatory rather than a restrictive perspective. The scope of the present invention is indicated in the claims rather than the foregoing description, and all differences within the equivalent scope should be construed as being included in the present invention.

10: Handpiece
20: driving unit
30: Drug supply department
40: water supply unit
310: Drug supply means
320: stirring means
321: Stirring tank
322: Stirring wing
323: Temperature control means
331, 332, 333, 334: valve
340: Spray water storage means
341: Input pipe
342, 351: Discharge pipe
410: Spray water supply means
420: Cooling water supply means
421: Cooling pipe

Claims (5)

Dental handpiece (10);
A driving unit 20 that drives the handpiece 10;
A water supply unit 40 that supplies cooling water to cool the handpiece 10 and the drive unit 20; and
It includes a drug supply unit (30) that mixes a drug with antibacterial properties with the spray water supplied from the water supply section and sprayed in a spray form from the hand piece (10) and supplies it to the hand piece (10),
The medicine is
Either collagen or EGCG (epigallocatechin-3-gallate); A dental handpiece cooling water supply device capable of imparting antibacterial activity, characterized by
The method of claim 1, wherein the drug supply unit 30 is
A drug supply means (310) that accommodates a powder-type drug;
A first valve 331 that discharges a fixed amount of medicine from the medicine supply means 310;
A stirring tank 321 that mixes the spray water supplied from the water supply unit 40 and the medicine discharged from the medicine supply means 310 and discharges the mixture into a discharge pipe connected to the handpiece 10; and
Temperature control means 323 for controlling the temperature within the stirring tank 321; A dental handpiece cooling water supply device capable of imparting antibacterial activity, including a.
The method of claim 2, wherein the drug supply unit 30
Spray water storage means (340) for storing unused mixed spray water mixed with chemicals remaining in the stirring tank (321); A dental handpiece coolant supply device capable of imparting antibacterial activity, further comprising:
The method of claim 3, wherein the drug supply unit 30
A second valve 332 that opens and closes the supply pipe connected from the water supply unit 40 to the stirring tank 321;
A third valve (333) that selectively opens and closes between the input pipe (341) of the spray water storage means (340) and the discharge pipe (342) on the hand piece (10) side;
A fourth valve 334 that opens and closes the discharge pipe connected from the spray water storage means 340 to the stirring tank 321; A dental handpiece cooling water supply device capable of imparting antibacterial activity, including a.
The method of claim 4, wherein the water supply unit 40
Cooling water supply means 420 for cooling the handpiece 10 and the driving unit 20; It further includes,
The cooling pipe 421 extending from the coolant supply means 420 and moving the coolant inside is extended to be in close contact with the discharge pipe 351 extending from the stirring tank 321 toward the handpiece 10, thereby forming the discharge pipe 351. cooling the spray water; A dental handpiece cooling water supply device capable of imparting antibacterial activity, characterized by

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