Cryogenic cooling device for dental treatment

Abstract

The invention relates to a cryogenic cooling device for dental treatment. A cryogenic cooling device for dental treatment according to an exemplary embodiment of the present invention comprises: a first coolant storage tank for storing a first coolant; a second coolant storage tank for storing a second coolant; a control unit that is connected to the first coolant storage tank and the second coolant storage tank so as to adjust the supply amount of the first coolant and the supply amount of the second coolant, and that converts the first coolant and the second coolant into a first cooling gas and a second cooling gas, respectively, and then supplies the first cooling gas and the second cooling gas in a mixed manner; and a cooling gas injection device for injecting the mixed cooling gas supplied from the control unit, the control unit adjusting the supply amount of the first coolant and the supply amount of the second coolant such that the first cooling gas and the second cooling gas are mixed at different ratios.

Description

Technical Field

[0001] The present invention relates to a low temperature cooling device for dental treatment, and more particularly, to a low temperature cooling device for dental treatment using two different coolants. Background Art

[0002] Cryotherapy is a treatment method widely used in Europe and other countries. This method uses the principle of cold compress to expose the user's entire body to low-temperature air for a specified period of time when pain such as bruises or inflammation occurs, and then dissipates heat from the body to maintain body temperature, thereby enhancing the body's immune system and increasing the body's natural healing ability through the heating effect of the inflamed area. It also has the effect of relieving pain by providing strong stimulation to the nervous system to prevent the nerve fibers that cause pain from functioning.

[0003] A cryogenic cooling therapy device is a device that sprays cryogenic cooling material onto the affected part of the patient to relieve pain, eliminate swelling, etc., and the device must be able to continuously supply cooling material. Existing cryogenic cooling therapy devices use nitrogen or carbon dioxide as cooling material for treatment, which is stored in a tank and sprayed onto the affected part when needed.

[0004] The technology regarding the conventional cryogenic cooling device as described above is disclosed in Korean Patent Publication No. 10-2010-0054097.

[0005] Explain the existing technology developed and disclosed for medical local cooling, which uses low-temperature coolants such as liquid nitrogen and dry ice to achieve local cooling. The inherent temperature of these coolants is significantly lower than the cell death temperature. Since it is difficult to stably achieve the cooling conditions that show the effects of cooling anesthesia, immune activation, etc., the use of these coolants in various clinical applications is limited. The lack of this technology is fundamentally due to the large specific heat of cells, because in order to effectively cool cells, it is difficult to accurately control the temperature of a coolant with a high cooling output at any temperature outside its natural temperature range in terms of engineering.

[0006] In the cooling anesthesia of the extended use case of the cold therapy, unlike local anesthetics (Lidocaine) that take time for chemical substances to diffuse into nerves, when the nerve temperature is physically cooled, an anesthetic state can be immediately produced in the corresponding part, and therefore, it is effectively used for rapid local anesthesia required for various medical operations. In detail, for anesthetics used for local anesthesia, there is not only the limitation that it takes a long time for the anesthetic to penetrate the thick skin layer and reach the sensory nerves, but also, for skin where chemical substances are not easy to diffuse, there is a disadvantage that the anesthetic effect is often insufficient if it is not directly injected. For the purpose of anesthesia, conventional medical cooling devices have been developed that use cooled air to relieve pain in local areas of the skin, but due to the low heat capacity of air, it is difficult to lower the temperature of the treatment area to a temperature that shows an anesthetic effect.

[0007] In addition, when traditional low-temperature cooling treatment devices are used for dental treatment, since the contact surface is close to the human face, which is different from ordinary skin, if the cooling gas is sprayed directly, it may cause damage to the outer skin of the face and even the skin inside the oral cavity. Therefore, there is a problem that different temperatures must be applied when spraying the cooling gas.

[0008] In addition, the cooling gas commonly used is nitrogen or carbon dioxide gas, but when only one cooling gas is used for low-temperature cooling treatment, it is difficult to completely block the action of nerve fibers that cause pain. Therefore, there is still a problem that the analgesic effect is difficult to achieve the desired effect. Summary of the invention

[0009] One object of the present invention among various problems is to provide a cryogenic cooling device capable of combining cooling gases suitable for dental treatment and providing them at an appropriate temperature.

[0010] Another object of the present invention among various problems is to provide a cryogenic cooling device that can simultaneously perform cryogenic cooling treatment on the outer skin of a subject's face and the skin inside the oral cavity.

[0011] According to an exemplary embodiment of the present invention, a low-temperature cooling device for dental treatment may include: a first coolant storage tank for storing a first coolant; a second coolant storage tank for storing a second coolant; a control unit connected to the first coolant storage tank and the second coolant storage tank to adjust the supply amount of the first coolant and the supply amount of the second coolant, and convert the first coolant and the second coolant into a first cooling gas and a second cooling gas respectively and then mix and supply them; and a cooling gas injection device for injecting the mixed cooling gas supplied from the control unit. The control unit can adjust the supply amount of the first coolant and the supply amount of the second coolant so that the first cooling gas and the second cooling gas are mixed at different ratios.

[0012] The control unit may include: a heater unit for converting the first coolant and the second coolant into the first cooling gas and the second cooling gas, respectively; a sensor unit for measuring the temperature and pressure of the first cooling gas and the second cooling gas; a pressure adjustment unit for adjusting the pressure of the first cooling gas and the second cooling gas; a temperature adjustment unit for adjusting the temperature of the first cooling gas and the second cooling gas; and a cooling gas mixing unit for mixing the first cooling gas and the second cooling gas.

[0013] The first coolant and the second coolant may be liquid carbon dioxide and liquid nitrogen, respectively, the first cooling gas and the second cooling gas may be gaseous carbon dioxide and gaseous nitrogen, respectively, and the first cooling gas and the second cooling gas may be formed by gasifying the first coolant and the second coolant, respectively.

[0014] The first coolant and the first cooling gas may be gaseous carbon dioxide, respectively, the second coolant and the second cooling gas may be gaseous nitrogen, respectively, and the first cooling gas and the second cooling gas may be formed by heating the first coolant and the second coolant, respectively, to increase their temperatures.

[0015] A mixing ratio of the first cooling gas and the second cooling gas may be 1:1.

[0016] The mixed content of the first cooling gas may be higher than that of the second cooling gas.

[0017] The first cooling gas may be mixed to have a lower content than the second cooling gas.

[0018] The cooling gas injection device may include: a main body shell; a cooling gas supply pipeline connected to the control unit for moving the mixed cooling gas; a cooling gas flow control unit for controlling the flow of the mixed cooling gas; and a cooling gas nozzle for injecting the mixed cooling gas, wherein the cooling gas flow control unit controls the flow of the cooling gas by adjusting the size of the injection port of the cooling gas nozzle.

[0019] The cooling gas injection device may also include a cooling gas flow path conversion device for converting the flow path of the mixed cooling gas into a different direction. The cooling gas flow path conversion device may include a first flow path forming part, a second flow path forming part, a first cooling treatment part, and a second cooling treatment part. The first cooling treatment part may not directly inject the mixed cooling gas, and the second cooling treatment part may directly inject the mixed cooling gas.

[0020] The cooling gas flow path switching device is detachably coupled to the main body housing.

[0021] The cooling gas spraying device may further include a cooling treatment cover at least partially covering an outer surface of the first cooling treatment part, and the cooling treatment cover may be made of polyethylene, polypropylene or a combination thereof.

[0022] According to an exemplary embodiment of the present invention, a low-temperature cooling device for dental treatment may include: a storage tank for storing coolant; a control unit connected to the coolant storage tank, adjusting the supply amount of the coolant, and supplying the coolant after converting the coolant into cooling gas; and a cooling gas injection device for injecting the cooling gas supplied from the control unit, the cooling gas injection device including a cooling gas flow path conversion device for converting the flow path of the cooling gas to a different direction, the cooling gas flow path conversion device including a first cooling treatment unit that does not directly inject the cooling gas, and a second cooling treatment unit that directly injects the cooling gas.

[0023] Effects of the Invention

[0024] The cryogenic cooling device for dental treatment according to an exemplary embodiment of the present invention may be provided by combining nitrogen and carbon dioxide gases, thereby maximizing the pain relief effect on the treated person by completely blocking the action of nerve fibers that cause pain.

[0025] In addition, the low-temperature cooling device for dental treatment according to an exemplary embodiment of the present invention can be driven to control the temperature of the cooling gas to a temperature suitable for dental treatment, thereby minimizing damage to the outer skin of the face of the person being treated and even to the skin inside the oral cavity.

[0026] In addition, the low-temperature cooling device for dental treatment according to an exemplary embodiment of the present invention may include: a first cooling treatment part that does not directly spray the cooling gas, receives the lowered temperature from the cooling gas, and performs cooling treatment through direct surface contact; a second cooling treatment part that directly sprays the cooling gas, thereby performing cooling treatment on the oral skin area of ​​the patient through the first cooling treatment part, and performing cooling treatment on the outer skin area of ​​the patient's face through the second cooling treatment part. Therefore, while minimizing damage to the patient's facial outer skin and even oral skin, cooling treatment can be performed on each different skin surface in an appropriate manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 and Figure 2 They are respectively a front perspective view and a rear perspective view for explaining a conventional low-temperature cooling device.

[0028] Figure 3 is a rear view showing that a rear panel is removed in order to explain the structure of a low-temperature cooling device for dental treatment according to an exemplary embodiment of the present invention.

[0029] Figure 4 This is a block diagram for explaining the structure of a control unit of the low-temperature cooling device for dental treatment.

[0030] Figure 5 This is a block diagram for explaining a cooling gas injection device of the low-temperature cooling device for dental treatment.

[0031] Figure 6 This is a block diagram for explaining a cooling gas flow path conversion device of the low-temperature cooling device for dental treatment.

[0032] In the figure:

[0033] 10: Main frame, 20: Tank mounting portion, 30: Traveling portion, 40: Power supply portion, 50: Control portion, 100, 200: First coolant storage tank and second coolant storage tank, 120, 220: First coolant adapter and second coolant adapter, 125, 225: First discharge valve and second discharge valve, 130, 230: First coolant supply pipeline and second coolant supply pipeline, 140, 240: First supply pipeline joint portion and second supply pipeline joint portion, 150, 250: First coolant accommodating portion and second coolant accommodating portion, 155, 255: First control valve and second control valve, 160, 260: First sensor unit and second sensor unit, 170, 270: First temperature adjustment unit Element and second temperature adjustment unit, 180, 280: first pressure adjustment unit and second pressure adjustment unit, 190, 290: first heater unit and second heater unit, 300: cooling gas mixing unit, 310: cooling gas supply unit, 500: cooling gas injection device, 505: main body shell, 510: first cooling gas supply pipeline, 520: second cooling gas supply pipeline, 530: cooling gas flow control unit, 540: cooling gas nozzle, 550: cooling gas flow path conversion device, 551: third cooling gas supply pipeline, 553, 557: first flow path forming unit and second flow path forming unit, 555: first cooling treatment unit, 559: second cooling treatment unit, 560: cooling treatment cover DETAILED DESCRIPTION

[0034] The following is a description of the specific implementation of the present invention. The following specific description is provided to help a comprehensive understanding of the methods, devices and / or systems described in this specification. However, these are only examples, and the present invention is not limited thereto.

[0035] When describing an embodiment of the present invention, when it is judged that the specific description of the known technology related to the present invention will make the gist of the present invention unclear, its detailed description will be omitted. In addition, the terms described below are terms defined in consideration of the functions in the present invention, which can be changed according to the intention or habit of the user or operator. Therefore, the terms should be defined based on the content in the entire specification. The terms used in the detailed description are only used to describe embodiments of the present invention, and are not restrictive. Unless otherwise clearly used, the expression in the singular includes the meaning of the plural form. In this specification, expressions such as "including" or "having" should be interpreted as referring to certain characteristics, numbers, steps, actions, elements, parts or combinations of these, and do not exclude the existence or possibility of more than one other characteristics, numbers, steps, actions, elements, parts or combinations of these other than those mentioned.

[0036] In addition, when describing the components of the embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only used to distinguish the components from other components, and the nature, order, sequence, etc. of the components are not limited by these terms.

[0037] Figure 1 and Figure 2 They are respectively a front perspective view and a rear perspective view for explaining a conventional low-temperature cooling device.

[0038] Reference Figure 1 and Figure 2 The conventional low-temperature cooling device 1000 comprises: a main frame 1001, a tank mounting portion 1002, a travel portion 1003, a power supply portion 1004, a control portion 1005 and a cooling gas injection device 1010. Only one coolant storage tank 1020 is provided in the tank mounting portion 1002, and only one coolant is used to perform low-temperature cooling treatment on the patient.

[0039] A conventional low-temperature cooling device 1000 may include: an on / off button portion 1006, disposed on the front side of the main frame 1001, for turning the power on and off; a display portion 1007, for setting various gas injection conditions for displaying the current status; and an injection device installation portion 1015, for installing the cooling gas injection device 1010.

[0040] In addition, the conventional low-temperature cooling device 1000 includes: an outflow portion 1023 for discharging coolant from a coolant storage tank 1020; a valve 1025, which is opened and closed by automatic operation of the control unit 1005 or manual operation of the user; a coolant supply pipeline 130, for the discharged coolant to flow; and a supply pipeline joint 140, which passes through a portion of the control unit 1005 and accommodates one of the two ends of the coolant supply pipeline 130.

[0041] Figure 3 1 is a rear view showing a state where a rear panel is removed in order to explain the structure of the low-temperature cooling device for dental treatment.

[0042] Reference Figure 3 , a low-temperature cooling device 1 for dental treatment according to an exemplary embodiment of the present invention includes: a first coolant storage tank 100, used to store a first coolant; a second coolant storage tank 200, used to store a second coolant; a control unit 50, connected to the first coolant storage tank 100 and the second coolant storage tank 200, to adjust the supply amount of the first coolant and the supply amount of the second coolant, and convert the first coolant and the second coolant into a first cooling gas and a second cooling gas respectively and then mix them for supply; and a cooling gas injection device 500, used to inject the mixed cooling gas supplied from the control unit 50.

[0043] Specifically, the first coolant storage tank 100 and the second coolant storage tank 200 can be installed together on the tank installation part 20 provided on the rear lower side of the main frame 10, and the travel part 30 can be installed on the lower side of the main frame 10 to move the low-temperature cooling device for dental treatment 1. A power supply part 40 for supplying power to the low-temperature cooling device for dental treatment 1 can be provided on the lower frame side of the tank installation part 20.

[0044] The control portion 50 may control at least one of heat applied to the temperature adjustment unit 170 , 270 described later or a coolant injection time using at least one of a preset cooling condition or temperature information measured by the sensor unit 160 , 260 described later.

[0045] In addition, the control unit 50 includes a mode of automatic operation according to a preset protocol, and a mode of operation according to a user operation mode and a command input by the user. In the user mode, the temperature data measured by the sensor units 160 and 260 can be stored, and the stored big data can be used in various fields in the future.

[0046] In addition, the control unit 50 can be configured to achieve efficient control and power supply by optimizing the electrical signals and power supply connectors between each component and the control unit. Here, the control unit may include all types of devices capable of processing data, such as a processor. Here, "processor" may refer to, for example, a data processing device built into hardware, which has a circuit with a physical structure to execute the functions expressed by the code or instructions included in the program. An example of these data processing devices built into hardware may include a microprocessor, a central processing unit (CPU), a processor core, a multiprocessor, an application-specific integrated circuit (ASIC), and a field programmable gate array (FPGA) and other processing devices, but the scope of the present invention is not limited to this.

[0047] The first coolant storage tank 100 and the second coolant storage tank 200 may be coupled to the first storage tank fixing portion 110 and the second storage tank fixing portion 210 , respectively, and fixed to the tank mounting portion 20 .

[0048] The outflow portion 120, 220 of each of the first coolant storage tank 100 and the second coolant storage tank 200 may be provided with a valve 125, 225 that is opened and closed by automatic operation of the control unit or manual operation of the user, and by selectively opening the valve 125, the high-pressure coolant contained in the first coolant storage tank 100 and the second coolant storage tank 200 may be discharged.

[0049] The outflow portion 120 , 220 of each of the first coolant storage tank 100 and the second coolant storage tank 200 may be respectively referred to as a first coolant outflow portion 120 and a second coolant outflow portion 220 , but may also be referred to as a first coolant adapter 120 and a second coolant adapter 220 .

[0050] In an exemplary embodiment, the first coolant may be low-temperature high-pressure liquid carbon dioxide (CO2), and the second coolant may be low-temperature high-pressure liquid nitrogen (N), but the concept of the present invention is not limited thereto. That is, the first coolant may be low-temperature high-pressure gaseous carbon dioxide (CO2), and the second coolant may be low-temperature high-pressure gaseous nitrogen (N).

[0051] The control part 50 may be disposed at an upper side of the main frame 10 , and may adjust supply amounts of the first coolant and the second coolant to mix the first cooling gas and the second cooling gas at different ratios.

[0052] The first coolant stored in the first coolant storage tank 100 can be moved to the control part 50 through the first coolant supply line 130 via the first coolant adapter 120 and the first discharge valve 125, and the second coolant stored in the second coolant storage tank 200 can also be moved to the control part 50 through the second coolant supply line 230 via the second coolant adapter 220 and the second discharge valve 225. At this time, the first coolant supply line 130 and the second coolant supply line 230 can be respectively coupled to the control part 50 through the first supply line coupling part 140 and the second supply line coupling part 240.

[0053] Figure 4 This is a block diagram for explaining the structure of a control unit of the low-temperature cooling device for dental treatment.

[0054] Reference Figure 4 The control unit 50 may include: a first heater unit 190 and a second heater unit 290, for converting the first coolant and the second coolant into a first cooling gas and a second cooling gas, respectively; a first sensor unit 160 and a second sensor unit 260, for measuring the temperature and pressure of the first cooling gas and the second cooling gas; a first pressure adjusting unit 180 and a second pressure adjusting unit 280, for adjusting the pressure of the first cooling gas and the second cooling gas; a first temperature adjusting unit 170 and a second temperature adjusting unit 270, for adjusting the temperature of the first cooling gas and the second cooling gas; and a cooling gas mixing unit 300, for mixing the first cooling gas and the second cooling gas.

[0055] Specifically, the first coolant stored in the first coolant storage tank 100 can be moved to the control part 50 through the first coolant supply pipeline 130 via the first coolant adapter 120 and the first discharge valve 125, and can be temporarily accommodated in the first coolant accommodating part 150 provided inside the control part 50, and then converted into the first cooling gas through the first heater unit 190.

[0056] Similarly, the second coolant stored in the second coolant storage tank 200 can also be moved to the control unit 50 through the second coolant supply pipeline 230 via the second coolant adapter 220 and the second discharge valve 225, and can be temporarily accommodated in the second coolant accommodating portion 250 provided inside the control unit 50, and then converted into the second cooling gas through the second heater unit 290.

[0057] That is, the present invention can adjust the thermodynamic phases (temperature, pressure) of the first coolant and the second coolant according to the movement paths of the first coolant and the second coolant, and can control the thermodynamic phases of the coolants by selectively driving the various components of the cooling device, namely the heater units 190, 290, the pressure adjustment units 180, 280, and the temperature adjustment units 170, 270, or combining the drives to perform heating or cooling.

[0058] Hereinafter, the description will be based on controlling the thermodynamic phases of the first coolant and the second coolant by thermal energy, but the concept of the present invention is not necessarily limited thereto, and other energies, such as mechanical energy, may also be used to control the pressure.

[0059] In one embodiment, the heater units 190, 290, the pressure adjustment units 180, 280, and the temperature adjustment units 170, 270 are each implemented by a heat transfer medium structure between a coolant and a thermoelectric element, with the heating control based on the thermoelectric element as the center. In addition, the heater units 190, 290, the pressure adjustment units 180, 280, and the temperature adjustment units 170, 270 may include a nozzle structure capable of optimizing the coolant injection amount and the Joule-Thomson effect. Here, the Joule-Thomson effect is a phenomenon in which the temperature of a compressed gas decreases when it expands. This is a phenomenon in which the temperature changes relative to a thermodynamic phase consisting of pressure-temperature, and is applied to liquefying air or cooling air by a refrigerant. This is a phenomenon in which the temperature of the fluid decreases behind the hole when a hole such as a throttle plate is inserted into the flow path of the fluid. This refers to the phenomenon that the internal energy is almost unchanged when the gas is free expanding, that is, when the gas does not exchange work with the outside and expands adiabatically, in order to obtain a low temperature and adiabatic free expansion effect using a gas liquefaction device.

[0060] Thereafter, the pressure and temperature of the first cooling gas and the second cooling gas can be adjusted respectively through the first heater unit 190 and the second heater unit 290 and the first control valve 155 and the second control valve 255, and can be mixed through the cooling gas mixing unit 300 and moved to the cooling gas injection device 500 through the cooling gas supply unit 310.

[0061] At this time, the mixing ratio of the first cooling gas and the second cooling gas may be 1:1, but the concept of the present invention is not necessarily limited thereto. That is, the first cooling gas may be mixed to have a higher content than the second cooling gas, and conversely, the first cooling gas may be mixed to have a lower content than the second cooling gas.

[0062] In one embodiment, when the first coolant is cryogenic and high-pressure liquid carbon dioxide (CO2), the first coolant can be formed by gasifying the first coolant, and when the second coolant is cryogenic and high-pressure liquid nitrogen (N), the second cooling gas can be formed by gasifying the second coolant.

[0063] On the contrary, when the first coolant is low-temperature and high-pressure gaseous carbon dioxide (CO2), the first coolant gas can be formed by adjusting the temperature and pressure, and it is not a phase change of the first coolant. And when the second coolant is low-temperature and high-pressure nitrogen (N), the second coolant gas can be formed by adjusting the temperature and pressure, and it is not a phase change of the second coolant.

[0064] Figure 5 This is a block diagram for explaining a cooling gas injection device of the low-temperature cooling device for dental treatment.

[0065] Reference Figure 5 The cooling gas injection device 500 may include: a main body shell 505, a cooling gas supply line 510 connected to the control unit 50 for moving the mixed cooling gas; a cooling gas flow control unit 530 for controlling the flow of the mixed cooling gas; and a cooling gas nozzle 540 for injecting the mixed cooling gas. At this time, the cooling gas flow control unit 530 can control the flow of the cooling gas by adjusting the size of the injection port of the cooling gas nozzle 540.

[0066] In an exemplary embodiment, the temperature of the mixed cooling gas ejected by the cooling gas ejection device 500 can be a temperature that controls the treatment part of the patient within a temperature range of above -40°C and below 10°C. Preferably, the temperature can be a temperature that controls the treatment part of the patient within a temperature range of above -20°C and below 10°C.

[0067] Figure 6 This is a block diagram for explaining a cooling gas flow path switching device of the low-temperature cooling device for dental treatment.

[0068] Reference Figure 6 The cooling gas injection device 500 may further include a cooling gas flow path conversion device for converting the flow path of the mixed cooling gas into a different direction.

[0069] Specifically, the cooling gas flow path conversion device may include: a first flow path forming portion 553, a second flow path forming portion 557, a first cooling treatment portion 555, and a second cooling treatment portion 559. The first cooling treatment portion may be configured not to directly eject the mixed cooling gas, and the second cooling treatment portion may be configured to directly eject the mixed cooling gas.

[0070] In an exemplary embodiment, the first cooling treatment part 555 may be made of a material having high thermal conductivity, such as metal, and the second cooling treatment part 559 may be formed in a jet shape so as to jet the mixed cooling gas. In an embodiment, the jet of the second cooling treatment part 559 may have a smaller diameter than the jet of the cooling gas nozzle 540.

[0071] That is, the first cooling therapy section 555 can be configured to receive the lowered temperature of the mixed cooling gas moved through the first flow path forming section 553, and perform cooling therapy on the patient through direct surface contact, and the second cooling therapy section 559 can perform cooling therapy on the patient by directly transmitting the lowered temperature due to direct injection of the mixed cooling gas moving through the second flow path forming section 557.

[0072] in addition, Figure 6 It is shown that the cooling gas flow path switching device is detachably coupled to the main body housing 505 , but the concept of the present invention is not necessarily limited thereto, and the cooling gas flow path switching device may also be formed as one body with the main body housing 505 .

[0073] The cooling gas spraying device 500 may further include a cooling treatment cover 560 that at least partially covers the outer surface of the first cooling treatment portion 555 .

[0074] The cooling therapy cover 560 may be made of polyethylene, polypropylene, or a combination thereof, and may be provided in plurality so as to be replaceable for use whenever the patient being treated is different.

[0075] In one embodiment, the cooling therapy cover 560 may be manufactured to a size that covers only the outer surface of the first cooling therapy portion 555 but does not cover the outer surface of the first flow path forming portion 553 .

[0076] Although not shown in the figure, the cooling gas injection device 500 may further include a cooling treatment cover tip (not shown in the figure) that at least partially covers the outer surface of the second cooling treatment part 559 .

[0077] Similar to the cooling therapy cover 560, the cooling therapy cover tip can also be made of polyethylene, polypropylene or a combination thereof, and a plurality of them can be provided so that they can be replaced whenever the treated person is different. However, unlike the cooling therapy cover 560, the cooling therapy cover tip can be made into a size that can cover the outer surface of the second cooling therapy portion 559 and the outer surface of the second flow path forming portion 557 adjacent thereto.

[0078] As described above, the cryogenic cooling device 1 for dental treatment according to the exemplary embodiment of the present invention can be provided by combining nitrogen gas and carbon dioxide gas, thereby maximizing the effect of alleviating the pain of the treated person by completely blocking the action of nerve fibers that cause pain.

[0079] Moreover, the low-temperature cooling device 1 for dental treatment according to the exemplary embodiment of the present invention can be driven to control the temperature of the cooling gas to a temperature suitable for dental treatment, thereby minimizing damage to the outer skin of the face of the person being treated and even to the skin inside the oral cavity.

[0080] In addition, the low-temperature cooling device 1 for dental treatment according to the exemplary embodiment of the present invention may include: a first cooling treatment part 555, which does not directly spray the cooling gas, receives the lowered temperature from the cooling gas, and performs cooling treatment through direct surface contact; and a second cooling treatment part 559, which directly sprays the cooling gas, and the intraoral skin area of ​​the treated person can be subjected to cooling treatment through the first cooling treatment part 555, and the external facial skin area of ​​the treated person can be subjected to cooling treatment through the second cooling treatment part 559. Therefore, while minimizing the damage to the external facial skin and even the intraoral skin of the treated person, cooling treatment can be performed on different skin surfaces in an appropriate manner.

[0081] However, the concept of the present invention is not necessarily limited thereto, and the device according to the exemplary embodiment of the present invention may be applied to various products and even technical fields other than the above-mentioned products and even technical fields.

[0082] Although various embodiments of the present invention are described in detail above, it will be appreciated by those skilled in the art that various modifications may be made to the above embodiments without departing from the scope of the present invention. Therefore, the scope of the rights of the present invention should not be limited to the described embodiments, but should be determined by the appended claims and the equivalents of the claims.

Claims

1. A low temperature cooling device for dental treatment, characterized in that: include: A first coolant storage tank, used for storing a first coolant; A second coolant storage tank, used for storing a second coolant; a control unit connected to the first coolant storage tank and the second coolant storage tank to adjust the supply amount of the first coolant and the second coolant, and convert the first coolant and the second coolant into a first cooling gas and a second cooling gas respectively and then mix and supply them; and a cooling gas injection device for injecting the mixed cooling gas supplied from the control unit, The control portion adjusts a supply amount of the first coolant and a supply amount of the second coolant so that the first coolant gas and the second coolant gas are mixed at different ratios.

2. The low temperature cooling device for dental treatment according to claim 1, characterized in that: The control unit comprises: a heater unit for converting the first coolant and the second coolant into the first cooling gas and the second cooling gas, respectively; a sensor unit, configured to measure the temperature and pressure of the first cooling gas and the second cooling gas; a pressure adjustment unit, used for adjusting the pressure of the first cooling gas and the second cooling gas; a temperature adjustment unit, configured to adjust the temperature of the first cooling gas and the second cooling gas; and The cooling gas mixing unit is used to mix the first cooling gas and the second cooling gas.

3. The low temperature cooling device for dental treatment according to claim 2, characterized in that: The first coolant and the second coolant are liquid carbon dioxide and liquid nitrogen, respectively. The first cooling gas and the second cooling gas are respectively gaseous carbon dioxide and gaseous nitrogen, The first cooling gas and the second cooling gas are formed by gasifying the first coolant and the second coolant, respectively.

4. The low temperature cooling device for dental treatment according to claim 2, characterized in that: The first coolant and the first cooling gas are respectively gaseous carbon dioxide, The second coolant and the second cooling gas are respectively gaseous nitrogen, The first cooling gas and the second cooling gas are formed by heating the first coolant and the second coolant respectively to increase their temperatures.

5. The low temperature cooling device for dental treatment according to claim 2, characterized in that: The mixing ratio of the first cooling gas and the second cooling gas is 1:

1.

6. The low temperature cooling device for dental treatment according to claim 2, characterized in that: The mixed content of the first cooling gas is higher than that of the second cooling gas.

7. The low temperature cooling device for dental treatment according to claim 2, characterized in that: The first cooling gas is mixed to have a lower content than the second cooling gas.

8. The low temperature cooling device for dental treatment according to claim 1, characterized in that: The cooling gas injection device comprises: Main body shell; a cooling gas supply line connected to the control unit for moving the mixed cooling gas; a cooling gas flow control unit, configured to control the flow of the mixed cooling gas; and a cooling gas nozzle for injecting the mixed cooling gas, The cooling gas flow rate control unit controls the flow rate of the cooling gas by adjusting the size of the injection port of the cooling gas nozzle.

9. The low temperature cooling device for dental treatment according to claim 1, characterized in that: The cooling gas injection device further includes a cooling gas flow path conversion device for converting the flow path of the mixed cooling gas into different directions. The cooling gas flow path conversion device includes a first flow path forming portion, a second flow path forming portion, a first cooling treatment portion, and a second cooling treatment portion. The first cooling treatment part does not directly spray the mixed cooling gas, and the second cooling treatment part directly sprays the mixed cooling gas.

10. The low temperature cooling device for dental treatment according to claim 9, characterized in that: The cooling gas flow path switching device is detachably coupled to the main body housing.

11. The low temperature cooling device for dental treatment according to claim 9, characterized in that: The cooling gas flow path switching device includes a cooling treatment cover that at least partially covers the outer surface of the first cooling treatment part, The cooling therapy cover is made of polyethylene, polypropylene or a combination thereof.

12. A low temperature cooling device for dental treatment, characterized in that: include: A storage tank for storing coolant; A control unit connected to the coolant storage tank, adjusting the supply amount of the coolant, and supplying the coolant after converting the coolant into cooling gas; as well as a cooling gas injection device for injecting the cooling gas supplied from the control unit, The cooling gas injection device includes a cooling gas flow path conversion device for converting the flow path of the cooling gas into different directions. The cooling gas flow path switching device includes a first cooling treatment part that does not directly eject the cooling gas, and a second cooling treatment part that directly ejects the cooling gas.

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