Multi-wavelength laser irradiation device and irradiation method

Abstract

A multi-wavelength laser irradiation device and irradiation method of the present invention comprise: a main body by which general control and operation are performed; a handpiece connected to the main body in a wired manner; and a tip that can be coupled to one side of the handpiece, wherein the main body includes: a first power source supply unit; a display unit for providing a detailed procedure screen and a detailed procedure setting control screen to a user and an operator; a control unit for controlling a general operation; a laser generation unit for generating a laser beam; a temperature adjustment unit for maintaining an appropriate temperature for increasing laser output efficiency; and a cooling unit for irradiating cooling gas at the skin of the user, wherein the laser generation unit includes a first laser generator and a second laser generator for outputting laser beams of respectively different wavelengths, and the temperature adjustment unit includes a first temperature adjustment unit for controlling the temperature of the first laser generator and a second temperature adjustment unit for controlling the temperature of the second laser generator.

Description

Multi-wavelength laser irradiation device and irradiation method

[0001] The present invention relates to a laser irradiation device, and more particularly, to a multi-wavelength laser irradiation device and irradiation method that simultaneously irradiate lasers of multiple wavelengths.

[0002] The use of electromagnetic radiation in the visible and infrared spectrum has become commonplace in many fields of industry, medicine, and research. For example, such radiation is becoming increasingly important in dermatology. In many cases, laser sources are used to generate the desired radiation levels at the required wavelengths.

[0003] There are many lasers commonly used in dermatology, such as for the treatment of vascular or pigmented lesions, hair removal, and skin resurfacing. The principle of selective photothermolysis underlies many laser treatments and is used to treat various conditions, including varicose veins, flame nevi, other opaque vascular lesions, and pigmented lesions, including tattoos. The dermis and epidermis, including the target structure, are typically irradiated with light from a laser or flash lamp. The wavelength of this light is selected so that its energy is preferentially or selectively absorbed within the structure. This creates localized heating, with the intention of increasing the temperature to the point where constituent proteins denature or pigment particles diffuse.

[0004] A skin treatment device is known that aims to improve skin condition by irradiating the skin of a subject with lasers of various wavelengths.

[0005] Examples of lasers used in these skin treatment devices include 1064 nm and 755 nm wavelengths. The 1064 nm wavelength laser targets dermal blood vessels and can achieve hair removal and skin regeneration effects regardless of skin color. This 1064 nm wavelength laser is useful for dermal blood vessel treatment because it penetrates deeply into the skin and has high oxyhemoglobin absorption. Furthermore, the 1064 nm wavelength laser has low melanin absorption, making it ideal for hair removal in individuals with darker skin tones. Furthermore, the 1064 nm wavelength laser not only penetrates deeply but also has high absorption, stimulating collagen within the dermal layer. This leads to significant improvements in fine wrinkles and skin regeneration.

[0006] The 755 nm wavelength laser has a whitening effect on the epidermis and shows a high hair removal effect in subjects with light skin tones. Specifically, although the penetration depth of the 755 nm wavelength laser is slightly shallower than that of the 1064 nm wavelength laser, its high melanin absorption rate makes it more effective in hair removal than the 1064 nm wavelength laser. However, its high melanin absorption rate limits its use on certain skin types. It cannot be used on subjects with dark skin tones because the skin absorbs the energy first, causing damage. On the other hand, the 755 nm wavelength laser has a whitening effect that brightens the skin tone due to its high melanin absorption rate.

[0007] Combining the 1064 nm and 755 nm wavelengths described above to treat a patient can enhance vascular treatment, hair removal, and whitening effects, tailored to different skin penetration depths and skin tones. For this reason, recent laser skin treatment devices are being designed to simultaneously or alternately apply at least two different wavelengths.

[0008] At this time, in order to increase the output efficiency of lasers of different wavelengths, it is necessary to delicately control the temperature of the laser generating device, and also, in order to alleviate pain when the laser is irradiated, cooling gas is irradiated, and in order to normally irradiate the cooling gas, internal pressure control for the internal cooling gas output structure is required.

[0009] The purpose of the present invention to solve the above problems is to provide a multi-wavelength laser irradiation device and irradiation method that simultaneously or alternately irradiates a laser having a wavelength of 1064 nm and a laser having a wavelength of 755 nm, controls the temperature inside a laser resonator using cold / hot water for maximum efficiency of laser output, outputs cooling gas to relieve pain after outputting the laser, and controls the pressure inside a gas path inside a product for outputting the cooling gas.

[0010] The multi-wavelength laser irradiation device and irradiation method of the present invention for achieving the above purpose comprises a main body in which overall control and operation are performed; a handpiece that operates under the control of the main body and is wired and connected to the main body; and a tip that can be connected to one side of the handpiece;

[0011] The above main body is configured to include a first power unit that enables overall operation, a display unit that operates by receiving power from the first power unit and provides a treatment detail screen and a treatment detail setting control screen to a user and a practitioner, a control unit that operates by receiving power from the first power unit and controls overall operation according to the treatment detail setting value of the display unit, a laser generation unit that receives power from the first power unit and operates according to the control of the control unit and generates a laser, a temperature control unit that operates by receiving power from the first power unit and maintains an appropriate temperature to increase laser output efficiency when the laser generation unit generates a laser, and a cooling unit that operates by receiving power from the first power unit and irradiates cooling gas to the user's skin.

[0012] The above laser generating unit may be composed of a first laser generator and a second laser generator that output lasers of different wavelengths, and the temperature control unit may include a first temperature control unit that controls the temperature of the first laser generator and a second temperature control unit that controls the temperature of the second laser generator.

[0013] The first laser generator can generate a laser having a wavelength of 720 nm to 780 nm, and the second laser generator can generate a laser having a wavelength of 955 nm to 1100 nm.

[0014] The first laser generator and the second laser generator may each further include a plurality of lamps, a gain medium that absorbs light generated from the lamps, and a reflector composed of a pair of mirrors facing each other at both horizontal ends of the gain medium to resonate light into the gain medium.

[0015] One mirror of the first laser generator may have a reflectivity of at least 97%, and the other mirror may have a reflectivity of 78% to 83%.

[0016] One mirror of the second laser generator may have a reflectivity of at least 97%, and the other mirror may have a reflectivity of 38% to 43%.

[0017] Instead of the above reflector, both ends of the gain medium can be coated to reflect the same reflectivity as above.

[0018] The first temperature control unit may include a first cooling water chamber circulating through a tube inside the first laser generator to maintain the temperature of the lamp and the gain medium of the first laser generator at an appropriate temperature, a first heating unit for increasing the temperature of the first cooling water chamber, and a first cooling fan for decreasing the temperature of the first cooling water chamber, and the second temperature control unit may further include a second cooling water chamber circulating through a tube inside the second laser generator to maintain the temperature of the lamp and the gain medium of the second laser generator at an appropriate temperature, a second heating unit for increasing the temperature of the second cooling water chamber, and a second cooling fan for decreasing the temperature of the second cooling water chamber.

[0019] The cooling unit is attached to the inside of the main body and includes a gas can cover into which a gas can is inserted, a first hose coupled to the lower end of the gas can cover and used as a path through which the gas of the gas can flows, a first pressure sensor coupled to the lower end of the gas can cover and operated by power from the first power supply to check whether a gas can is inserted into the gas can cover, a chamber coupled to one side of the first hose and storing cooling gas, a first opening / closing valve that controls gas output to the central portion excluding both ends of the first hose located between the gas can cover and the chamber and operates under the power of the first power supply and the control of the control unit, a first level sensor coupled to one side of the upper portion of the chamber and detecting the presence of gas and operating under the power of the first power supply and the control of the control unit, a second level sensor coupled to one side of the lower end of the chamber and detecting the presence of gas and operating under the power of the first power supply and the control of the control unit, an outlet coupled to one side of the chamber and discharging gas inside the chamber to the outside, an outlet that opens and closes the outlet to discharge gas inside the chamber to the outside, and operates under the power of the first power supply and It may further include a second opening / closing valve operated by the control of the control unit, a second pressure sensor coupled to the central lower part of the chamber and checking the presence or absence of gas in the chamber, and a second hose connecting the chamber and the handpiece and used as a passage for cooling gas.

[0020] The above handpiece may further include a correction lens provided at one end of the handpiece to correct the dispersed laser beam to be parallel.

[0021] The above tip may further include a lens section for outputting a laser generated from the main body with a preset laser output spot size.

[0022] The lens section of the above tip includes at least one and less than five lenses inside, and the lenses may be configured as a concave lens on one side and a convex lens on the other side, or as concave lenses on both sides, or as convex lenses on both sides, and may be configured by combining the above lenses depending on the size of the laser irradiation beam.

[0023] A step of turning on power from a first power supply unit of a main body and transmitting power to a second power supply unit of a handpiece; A step of determining whether a laser output signal has been input from a control controller of the handpiece; A step of operating a laser generator to generate a laser under the control of a display unit and a control unit when it is determined in the step of determining whether a laser output signal has been input from the control controller of the handpiece; A step of operating the laser generator under the control of the display unit and the control unit, such that a first laser generator generates a laser having a wavelength of 720 nm to 780 nm and a second laser generator generates a laser having a wavelength of 955 nm to 1100 nm; A step of executing an operation to maintain a temperature in a temperature control unit to maintain an appropriate temperature of the laser generator when the first and second laser generators generate laser; A step of transmitting the laser generated from the laser generator to the handpiece through an optical fiber and irradiating the transmitted laser to a patient through a tip; A step of irradiating a cooling gas from a cooling unit of the main body to a nozzle of the handpiece; A step of determining whether a laser output signal has been input from the control controller of the handpiece; and a step of returning to a step of generating a laser by operating a laser generating unit under the control of a display unit and a control unit when it is determined that a laser output signal has been input in the step of determining whether a laser output signal has been input from the control controller of the handpiece; may be included.

[0024] A step of executing an operation to maintain the temperature in a temperature control unit to maintain an appropriate temperature of the laser generator; wherein the temperature control unit may include a first temperature control unit that controls the temperature of the first laser generator and a second temperature control unit that controls the temperature of the second laser generator.

[0025] The first temperature control unit can maintain the temperature of the first laser generator at 50°C to 65°C, and the second temperature control unit can maintain the temperature of the second laser generator at 20°C to 35°C.

[0026] In the step of transmitting a laser generated from a laser generating unit to a handpiece through an optical fiber and irradiating the transmitted laser to a patient through a tip; the handpiece may further include a step of collimating the dispersed laser beam with a correction lens before transmitting the laser to the tip.

[0027] In the step of irradiating cooling gas from the cooling unit of the main body to the nozzle of the handpiece, the method may further include: a step of coupling a gas can to a gas can cover of the cooling unit of the main body; a step of opening a first opening / closing valve when the gas can is coupled and the coupling of the gas can is sensed by the first pressure sensor, and a step of filling the gas up to the first level sensor of the chamber, and closing the first opening / closing valve when a sensing value is detected by the first level sensor; a step of determining in the control unit of the main body whether a laser has been irradiated to a patient; and a step of irradiating gas to the patient through a nozzle when it is determined that the laser has been irradiated in the step of determining whether the laser has been irradiated to the patient, a step of opening a third opening / closing valve of the handpiece.

[0028] The method may further include: a step of determining whether there is no change in the values ​​of the first pressure sensor and the second pressure sensor in the step of irradiating gas to the patient through the nozzle while the third on-off valve of the handpiece is opened; a step of determining whether there is no change in the values ​​of the first pressure sensor and the second pressure sensor in the step of determining whether there is no change in the values ​​of the first pressure sensor and the second pressure sensor, if it is determined that there is no change, a step of determining that all gas inside the gas can is exhausted; and a step of opening the second on-off valve of the chamber and opening the outlet to match the pressure inside the chamber with the external pressure.

[0029] In the step of transmitting the laser generated from the laser generating unit to the handpiece through an optical fiber and irradiating the transmitted laser to the patient through the tip;

[0030] The laser irradiated to the patient can simultaneously irradiate a laser having a wavelength of 720 nm to 780 nm generated from the first laser generator and a laser having a wavelength of 955 nm to 1100 nm generated from the second laser generator.

[0031] The laser irradiated to the patient may be a laser having a wavelength of 720 nm to 780 nm generated from the first laser generator and a laser having a wavelength of 955 nm to 1100 nm generated from the second laser generator, which may be irradiated simultaneously or with a time difference of 200 ms.

[0032] According to these features, the present invention can output a laser with maximum efficiency by maintaining an appropriate internal temperature of the laser generator.

[0033] And after irradiating the laser, it has the effect of reducing pain by outputting cooling gas. At this time, by controlling the pressure of the gas path inside the main body to output the cooling gas, the output of the cooling gas can be smoothly done, and the control of the pressure of the internal gas path has the effect of reducing the risk of gas can explosion.

[0034] Additionally, it is possible to simultaneously irradiate a 755 nm wavelength laser and a 1064 nm wavelength laser, or to vary the irradiation time gap up to 200 ms, which allows for detailed control according to skin characteristics and skin color.

[0035] FIG. 1 is a configuration diagram of a multi-wavelength laser irradiation device according to one embodiment of the present invention.

[0036] Figure 2 is a configuration diagram of a temperature control unit in a multi-wavelength laser irradiation device according to one embodiment of the present invention.

[0037] Figure 3 is a configuration diagram of a cooling unit in a multi-wavelength laser irradiation device according to one embodiment of the present invention.

[0038] Figure 4 is a schematic diagram showing a cooling unit and a cooling path in a multi-wavelength laser irradiation device according to one embodiment of the present invention.

[0039] Figure 5 is a flowchart of a multi-wavelength laser irradiation method according to one embodiment of the present invention.

[0040] Figure 6 is a flowchart of a cooling gas output method among multi-wavelength laser irradiation methods according to one embodiment of the present invention.

[0041] Figure 7 is a flowchart of a pressure control method within a main body among multi-wavelength laser irradiation methods according to one embodiment of the present invention.

[0042] Below, with reference to the attached drawings, embodiments of the present invention are described in detail so that those skilled in the art can easily implement the invention. However, the present invention can be implemented in various different forms and is not limited to the embodiments described herein. In addition, in the drawings, parts irrelevant to the description are omitted for clarity of description, and similar parts are designated with similar reference numerals throughout the specification.

[0043] Throughout the specification, when a part is said to be "connected (connected, contacted, or coupled)" to another part, this includes not only cases where the part is "directly connected," but also cases where the part is "indirectly connected" with another part in between. Furthermore, when a part is said to "include" a component, this does not exclude other components, but rather implies that the part may include other components, unless otherwise specifically stated.

[0044] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the present invention. The singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, it should be understood that the terms "comprises" or "has" specify that a feature, number, step, operation, component, part or combination thereof described in the specification is present, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0045] Then, with reference to the attached drawings, a multi-wavelength laser irradiation device and irradiation method according to one embodiment of the present invention will be described.

[0046] FIG. 1 is a configuration diagram of a multi-wavelength laser irradiation device according to one embodiment of the present invention, FIG. 2 is a configuration diagram of a temperature control unit in a multi-wavelength laser irradiation device according to one embodiment of the present invention, and FIG. 3 is a configuration diagram of a cooling unit in a multi-wavelength laser irradiation device according to one embodiment of the present invention.

[0047] Referring to FIGS. 1 to 3, the multi-wavelength laser irradiation device is configured to include a main body (10) in which overall control and operation are performed, a handpiece (20) that operates under the control of the main body (10) and is wired and connected to the main body (10), and a tip (30) that can be coupled to one side of the handpiece (20).

[0048] The above main body (10) is characterized in that it comprises a first power supply unit (11) that enables overall operation, a display unit (12) that operates by receiving power from the first power supply unit (11) and provides a treatment detail screen and a treatment detail setting control screen to a user and a practitioner, a control unit (13) that operates by receiving power from the first power supply unit (11) and controls overall operation according to the treatment detail setting value of the display unit (12), a laser generation unit (14) that receives power from the first power supply unit (11) and operates according to the control of the control unit (13) and generates a laser, a temperature control unit (15) that operates by receiving power from the first power supply unit (11) and maintains an appropriate temperature to increase laser output efficiency when the laser generation unit (14) generates a laser, and a cooling unit (18) that operates by receiving power from the first power supply unit (11) and irradiates a cooling gas to the user's skin.

[0049] The main body (10) and the handpiece (20) are connected by a wire, and in the present invention, it is preferable to transmit the laser generated from the laser generating unit (14) of the main body (10) to the handpiece (20) through an optical fiber.

[0050] The above display unit (12) provides the user with a UI for detailed settings, and the user can adjust detailed laser output settings on the display unit (12). In addition, the display unit (12) controls laser output and stop, and displays errors occurring in the operation of the device to the operator and the user through the display unit (12).

[0051] The above control unit (13) controls the overall operation of the main body and hand piece when laser output, stop, detailed settings, etc. are detected in the display unit (12).

[0052] The above laser generating unit (14) is composed of a first laser generator (14-1) and a second laser generator (14-2) that output lasers of different wavelengths, respectively. In one embodiment of the present invention, it is preferable that the first laser generator (14-1) outputs a wavelength of 755 nm and the second laser generator (14-2) outputs a wavelength of 1064 nm, but this is not limited thereto.

[0053] The above first laser generator (14-1) and the second laser generator (14-2) are configured to include a plurality of lamps, a gain medium that absorbs light generated from the lamps, and a reflector formed of a pair of mirrors facing each other at both horizontal ends of the gain medium to resonate light with the gain medium. At this time, the gain medium of the first laser generator is characterized in that it is Nd: YAG, and the gain medium of the second laser generator is characterized in that it is Alexandrite.

[0054] The above reflectors each have different reflectivities, and one mirror of the first laser generator has a reflectivity of at least 97% or more, and the other mirror has a reflectivity of 78% to 83%. One mirror of the second laser generator has a reflectivity of at least 97% or more, and the other mirror has a reflectivity of 38% to 43%.

[0055] At this time, instead of the reflector, both ends of the gain medium can be coated to reflect the same reflectivity as above and used.

[0056] The above temperature control unit (15) is configured to include a first temperature control unit (16) that controls the temperature of the first laser generator and a second temperature control unit (17) that controls the temperature of the second laser generator.

[0057] The above first temperature control unit (16) is configured to include a first cooling water chamber (16-1) that circulates through a tube inside the first laser generator to maintain the temperature of the lamp and gain medium of the first laser generator at an appropriate temperature, a first heating unit (16-2) that increases the temperature of the first cooling water chamber (16-1), and a first cooling fan (16-3) that lowers the temperature of the first cooling water chamber (16-1).

[0058] The above second temperature control unit (17) is configured to include a second cooling water chamber (17-1) that circulates through a tube inside the second laser generator to maintain the temperature of the lamp and gain medium of the second laser generator at an appropriate temperature, a second heating unit (17-2) that increases the temperature of the second cooling water chamber (17-1), and a second cooling fan (17-3) that lowers the temperature of the second cooling water chamber (17-1).

[0059] The above cooling unit (18) is attached to the inside of the main body and includes a gas can cover (18-1) into which a gas can is inserted, a first hose (not shown) coupled to the lower end of the gas can cover (18-1) and used as a path through which the gas of the gas can flows, a first pressure sensor (18-2) coupled to the lower end of the gas can cover (18-1) and operated by the power of the first power supply (11) to check whether the gas can is inserted into the gas can cover (18-1), a chamber (18-4) coupled to one side of the first hose and storing the cooling gas, a first opening / closing valve (18-3) which controls the gas output in the central part except for both ends of the first hose located between the gas can cover (18-1) and the chamber (18-4) and operates by the power of the first power supply (11) and the control unit (13), coupled to one side of the upper end of the chamber (18-4) and detects the presence or absence of gas and operates by the power of the first power supply (11) and A first level sensor (18-5) that operates under the control of the control unit (13), a second level sensor (18-6) that is coupled to one side of the lower portion of the chamber (18-4) and detects the presence or absence of gas and operates under the power of the first power unit (11) and the control of the control unit (13), an outlet (18-8) that is coupled to one side of the chamber (18-4) and discharges gas inside the chamber (18-4) to the outside, a second opening / closing valve (18-7) that opens and closes the outlet (18-8) to discharge gas inside the chamber (18-4) to the outside and operates under the power of the first power unit (11) and the control of the control unit (13), a second pressure sensor (18-9) that is coupled to the lower center portion of the chamber (18-4) and checks the presence or absence of gas inside the chamber (18-4), and a second hose (not shown) that connects the chamber (18-4) and the handpiece (20) and is used as a passage for cooling gas It consists of including.

[0060] When examining the cooling gas through the cooling unit (18), first, the gas can is connected to the gas can cover (18-1), and then the first pressure sensor (18-2) checks whether the gas can is connected. Then, the control unit (13) controls the first opening / closing valve (18-3) to open and output the gas from the gas can.

[0061] When gas is discharged from the gas can, the gas is filled into the chamber (18-4) through the first hose, and when the sensing values ​​are both detected by the second level sensor (18-6) and the first level sensor (18-5) of the chamber, the first opening / closing valve (18-3) is closed and the gas output from the gas can is stopped. At this time, it is determined that the gas has been filled up to the first level sensor (18-5).

[0062] When the laser is irradiated and the cooling gas is output, the gas filled in the chamber (18-4) is irradiated to the nozzle (24) of the handpiece (20) through the second hose, and when this process is repeated, the sensing value of the first level sensor (18-5) of the chamber (18-4) is not detected first, but the first opening / closing valve (18-3) is closed until the sensing value of the second level sensor (18-6) is not detected.

[0063] If the sensing value of the second level sensor (18-6) is not detected, it is determined that there is no gas in the chamber (18-4), and the first opening / closing valve (18-3) is opened to refill the cooling gas from the gas can until the sensing value is detected by the first level sensor (18-5) of the chamber (18-4).

[0064] At this time, if there is no change in the value of the first pressure sensor (18-2) and the sensing value of the second pressure sensor (18-9), it is determined that all of the gas inside the gas can has been exhausted, and a gas can replacement notification is output through the display unit (12). Since the sensing value of the first pressure sensor (18-2) detects the weight of the gas can and the weight of the gas inside the gas can, if there is no change in the sensing value, it is determined that all of the cooling gas inside the gas can has been exhausted. However, even if it is determined that there is no change in the sensing value from the first pressure sensor (18-2), if there is a change in the sensing value from the second pressure sensor (18-9), there is residual gas in the chamber (18-4), so if there is no change in the sensing value from the first pressure sensor (18-2), and a gas can replacement notification is output to the display unit (12), the procedure must be stopped even though there is residual gas. Therefore, only when it is determined that there is no change in the sensing value from both the first pressure sensor (18-2) and the first pressure sensor (18-9), a gas can replacement notification is output through the display unit (12).

[0065] When it is detected that there is no change in the sensing values ​​from the first pressure sensor (18-2) and the second pressure sensor (18-9), a notification to replace the gas can is output to the display unit (12), and since the pressure in the cooling unit (18) has increased due to internal heat generation caused by the operation of the structures of the main body (10), the second opening / closing valve (18-7) is opened to discharge the pressure inside the chamber (18-4) to the outside through the discharge port (18-8). By discharging the pressure inside the chamber (18-4) through the discharge port (18-8), the pressure in the cooling unit (18) is lowered. Thereafter, a new gas can is attached to the gas can cover (18-1) and gas is filled until a sensing value is detected by the first level sensor (18-5).

[0066] In addition, the third opening / closing valve (23) of the handpiece (20) is controlled according to the output amount of the cooling gas preset in the control unit (13) of the main body (10) to output through the nozzle (24).

[0067] The above handpiece (20) includes a housing (21) for protecting internal components from external impact, and inside the housing (21) is a second power supply unit (22) that receives power by being wired to the first power supply unit (11) of the main body (10), a third on-off valve (23) that operates by receiving power from the second power supply unit (22) and is opened and closed by the control unit (13) to output cooling gas output from the cooling unit (18) of the main body (10), a nozzle (24) that sprays cooling gas depending on whether the third on-off valve (23) is opened or closed, a control controller (25) that is located on one side of the housing (21) of the handpiece (20) and can control detailed treatment setting values ​​and overall operation, and a handpiece (30) that is provided at one end, and is configured to include a correction lens (26) that corrects the laser light to be parallel when the light is dispersed through the optical fiber.

[0068] The above control controller (25) is characterized by being either a touch type or a button type.

[0069] The above tip (30) includes a housing (31) for protecting internal components from external impact, a detachable member (32) provided on one side of the housing (31) for detaching from the handpiece (20), a lens part (33) configured inside the housing (31) for outputting a laser generated from the main body (10) at a preset laser output spot size when outputting the laser, and a support part (34) coupled to one side of the housing (31) for maintaining a constant laser irradiation length with the skin of the operator.

[0070] The lens section (33) of the above tip (30) includes at least one and less than five lenses inside, and the lenses may be configured with one side as a concave lens and the other side as a convex lens, or both sides as concave lenses, or both sides as convex lenses, and the above lenses may be combined and configured depending on the laser irradiation beam size.

[0071] In one embodiment, when outputting a beam size of 20 mm, the laser beam dispersed by the correction lens (26) of the handpiece (20) is parallelized, and the beam size is adjusted by the combination of lenses of the lens unit (33) of the tip (30). At this time, two lenses are combined, and one lens has one surface convex and the other surface concave, and the other lens has both surfaces concave.

[0072] Next, a multi-wavelength laser irradiation method according to one embodiment of the present invention will be described in detail with reference to the attached drawings.

[0073] FIG. 5 is a flowchart of a multi-wavelength laser irradiation method according to one embodiment of the present invention, FIG. 6 is a flowchart of a cooling gas output method among the multi-wavelength laser irradiation methods according to one embodiment of the present invention, and FIG. 7 is a flowchart of a pressure control method within a main body among the multi-wavelength laser irradiation methods according to one embodiment of the present invention.

[0074] Referring to FIGS. 5 to 7, first, power is turned on in the first power supply unit (11) of the main body (10), and power is transmitted to the second power supply unit (21) of the handpiece (20) (S10).

[0075] It is determined whether a laser output signal is input from the control controller (24) of the handpiece (20) (S11). At this time, it is characterized in that the output can be controlled not only by the control controller (24) of the handpiece (20), but also by the foot switch or the display unit (12).

[0076] In the step (S11) of determining whether a laser output signal has been input from the control controller (24) of the above handpiece (20), if it is determined that a laser output signal has been input, the laser generation unit (14) operates under the control of the display unit (12) and the control unit (13) to generate a laser (S12).

[0077] In the step (S11) of determining whether a laser output signal is input from the control controller (24) of the above handpiece (20), if the laser output signal is not input, the first power supply unit (11) of the main body (10) is turned on, and the power is transferred to the second power supply unit (21) of the handpiece (20) and then the machine waits (S10) for a while (S13).

[0078] The laser generating unit (14) operates under the control of the display unit (12) and the control unit (13). The first laser generator (14-1) generates a laser having a wavelength of 720 nm to 780 nm, and the second laser generator (14-2) generates a laser having a wavelength of 955 nm to 1100 nm (S14). At this time, in the present invention, it is preferable that the laser generated by the first laser generator (14-1) is a laser having a wavelength of 755 nm, and the laser generated by the second laser generator (14-2) is a laser having a wavelength of 1064 nm, but this is not limited thereto.

[0079] When a laser is generated from the first laser generator (14-1) and the second laser generator (14-2), an operation for maintaining the temperature is performed in the temperature control unit (15) to maintain an appropriate temperature of the laser generator (S15). At this time, the temperature control unit (15) is configured to include a first temperature control unit (16) that controls the temperature of the first laser generator (14-1) and a second temperature control unit (17) that controls the temperature of the second laser generator (14-2).

[0080] The above first temperature control unit (16) is characterized in that it maintains the temperature of the first laser generator (14-1) at 50°C to 65°C, and the second temperature control unit (17) maintains the temperature of the second laser generator (14-2) at 20°C to 35°C. In one embodiment of the present invention, the temperature of the first laser generator (14-1) is preferably 50°C, and the temperature of the second laser generator (14-2) is preferably 29°C, but is not limited thereto.

[0081] When laser is generated in the first laser generator (14-1) and the second laser generator (14-2), internal heat is generated, and in order to detect this, each of them includes a temperature sensor (not shown). The first laser generator (14-1) and the second laser generator (14-2) are cooled and heated by having cooling water flow inside each of the laser generators. For this reason, the first temperature control unit (16) heats the first cooling water chamber (16-1) with the first heating unit (16-2) to increase the cooling water temperature in order to maintain the appropriate temperature of the first laser generator (14-1) at 50°C, and detects the temperature of the first laser generator (14-1) with the temperature sensor. When it exceeds 50°C, the first cooling fan (16-3) is used to cool the first cooling water chamber (16-1) to decrease the cooling water temperature.

[0082] The second temperature control unit (17) cools the second cooling water chamber (17-1) using the second cooling fan (17-3) to lower the cooling water temperature in order to maintain the appropriate temperature of the second laser generator (14-2) at 29°C, and detects the temperature of the second laser generator (17-1) with a temperature sensor. If it is lower than 29°C, the second heating unit (17-2) heats the second cooling water chamber (17-1) to raise the cooling water temperature.

[0083] When the first laser generator (14-1) and the second laser generator (14-2) generate a laser, in order to maintain the appropriate temperature of the laser generator, a temperature control unit (15) performs an operation to maintain the temperature. After this, the laser generated from the laser generator (14) is transmitted to the handpiece (20) through an optical fiber, and the transmitted laser is irradiated to the patient through the tip (30) (S16).

[0084] At this time, the laser irradiated to the patient is a laser having a wavelength of 720 nm to 780 nm generated from the first laser generator (14-1) and a laser having a wavelength of 955 nm to 1100 nm generated from the second laser generator (14-2) that are irradiated simultaneously. In the present invention, it is preferable that the laser generated from the first laser generator (14-1) is a laser having a wavelength of 755 nm and the laser generated from the second laser generator (14-2) is a laser having a wavelength of 1064 nm, but this is not limited thereto.

[0085] The laser irradiated to the patient may be a laser having a wavelength of 720 nm to 780 nm generated from the first laser generator (14-1) and a laser having a wavelength of 955 nm to 1100 nm generated from the second laser generator (14-2) simultaneously or with a time difference of 200 ms, but is not limited thereto.

[0086] At this time, the handpiece (20) parallelizes the dispersed laser beam with a correction lens (26) before transmitting the laser to the tip (30).

[0087] After the step (S16) of irradiating the patient with a laser through the tip (30), cooling gas is irradiated from the cooling unit (18) of the main body (10) to the nozzle (23) of the handpiece (20) (S17).

[0088] After the step (S17) of irradiating the cooling gas to the nozzle (23) of the handpiece (20), it is determined whether a laser output signal is input from the control controller (24) of the handpiece (20) (S18).

[0089] In the step (S18) of determining whether a laser output signal has been input from the control controller (24) of the handpiece (20), if it is determined that a laser output signal has been input, the laser generation unit (14) is operated according to the control of the display unit (12) and the control unit (13) to generate a laser, and the process returns to the step (S12) (S19).

[0090] At the step (S18) of determining whether a laser output signal is input from the control controller (24) of the handpiece (20), if the laser output signal is not input, the laser output is terminated. At this time, the power of the equipment is not completely turned off, but the first power supply (11) of the main body (10) is turned on, and the power is transferred to the second power supply (21) of the handpiece (20) and the equipment waits at the step (S10).

[0091] In the step (S17) of irradiating cooling gas from the cooling unit (18) of the main body (10) to the nozzle (23) of the handpiece (20), first, a gas can is attached to the gas can cover (18-1) of the cooling unit (18) of the main body (10) (S20).

[0092] When the gas can is combined (S20), and the combination of the gas can is sensed by the first pressure sensor (18-2), the first opening / closing valve (18-3) opens and gas is filled up to the first level sensor (18-5) of the chamber (18-4), and when a sensing value is detected by the first level sensor (18-5), the first opening / closing valve (18-3) is closed (S21). At this time, gas is filled from the second hose connected to the third opening / closing valve (22) of the handpiece (20) to the first level sensor (18-5).

[0093] Next, the control unit (13) of the main body (10) determines whether the laser has been irradiated to the patient (S22).

[0094] In the step of determining whether the patient has been irradiated with a laser (S22), if it is determined that the patient has been irradiated with a laser, the third opening / closing valve (22) of the handpiece (20) opens and gas is irradiated to the patient through the nozzle (23) (S23).

[0095] This allows the heat generated when the laser is applied to the patient's skin to be cooled by the cooling gas, preventing burns and relieving pain.

[0096] After the step of irradiating gas to the patient through the nozzle (23) while the third opening / closing valve (22) of the above handpiece (20) is opened (S23), it is determined whether there is no change in the values ​​of the first pressure sensor (18-2) and the second pressure sensor (18-9) (S30).

[0097] In the step of determining whether there is no change in the values ​​of the first pressure sensor (18-2) and the second pressure sensor (18-9) (S30), if it is determined that there is no change, it is determined that all gas inside the gas can is exhausted (S31), and the second opening / closing valve (18-7) of the chamber (18-4) is opened and the outlet (18-8) is opened to match the pressure inside the chamber with the external pressure (S32).

[0098] After the step of irradiating gas to the patient through the nozzle (23) while the third opening / closing valve (22) of the above handpiece (20) is opened (S23), it is determined whether the value of the first pressure sensor (18-2) decreases (S40).

[0099] In the step of determining whether the value of the first pressure sensor (18-2) is decreasing (S40), if it is determined that the value of the first pressure sensor (18-2) is decreasing, the heating wire of the gas can cover (18-1) is turned on to increase the pressure inside the gas can (S41).

[0100] After the step of irradiating gas to the patient through the nozzle (23) while the third opening / closing valve (22) of the above handpiece (20) is opened (S23), it is determined whether there is a sensing value from the second level sensor (18-6) (S50).

[0101] In the step (S50) of determining whether there is a sensing value from the second level sensor (18-6), if it is determined that there is a sensing value from the second level sensor (18-6), the first opening / closing valve (18-3) opens and gas is filled until a sensing value is detected from the first level sensor (18-5) (S51).

[0102] The step (S30) of determining whether there is no change in the values ​​of the first pressure sensor (18-2) and the second pressure sensor (18-9), the step (S40) of determining whether the value of the first pressure sensor (18-2) is decreasing, and the step (S50) of determining whether there is a sensing value from the second level sensor (18-6) are characterized in that they are continuously executed after the step (S10) of turning on the power in the first power supply unit (11) of the main body (10) and transmitting the power to the second power supply unit (21) of the handpiece (20).

[0103] This has the effect of preventing the pressure inside the main body (10) from becoming higher than the external pressure, thereby preventing explosion of the gas can or errors in gas injection. In addition, it has the effect of preventing inconveniences such as having to stop the procedure by continuously filling the inside of the cooling unit with cooling gas.

[0104] 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 also fall within the scope of the present invention.

[0105] * Explanation of symbols

[0106] 10: Main body 11: First power supply

[0107] 12: Display section 13: Control section

[0108] 14: Laser generation unit 15: Temperature control unit

[0109] 18: Cooling unit 20: Handpiece

[0110] 21: Housing 22: Second power supply

[0111] 23: Third shut-off valve 24: Nozzle

[0112] 25: Control controller 26: Correction lens

[0113] 30: Tip 31: Housing

[0114] 32: Detachable member 33: Lens part

[0115] 34: Support

Claims

1. The main body where overall control and operation take place; A handpiece that operates under the control of the main body and is connected to the main body by a wire; and A tip that can be coupled to one side of the handpiece; comprising: The above body comprises a first power supply unit that enables overall operation; A display unit that operates by receiving power from the first power supply and provides a treatment detail screen and a treatment detail setting control screen to the user and the operator; A control unit that operates by receiving power from the first power supply and controls the overall operation according to the treatment detail setting values ​​of the display unit, A laser generating unit that receives power from the first power supply unit, operates under the control of the control unit, and generates a laser; It operates by receiving power from the first power supply, and has a temperature control unit to maintain an appropriate temperature to increase laser output efficiency when generating a laser from the laser generating unit. It operates by receiving power from the first power supply and includes a cooling unit for irradiating cooling gas on the user's skin. The above laser generating unit is composed of a first laser generator and a second laser generator that output lasers of different wavelengths, respectively. A multi-wavelength laser irradiation device characterized in that the temperature control unit comprises a first temperature control unit for controlling the temperature of a first laser generator and a second temperature control unit for controlling the temperature of a second laser generator.

2. In paragraph 1, A multi-wavelength laser irradiation device characterized in that the first laser generator generates a laser having a wavelength of 720 nm to 780 nm, and the second laser generator generates a laser having a wavelength of 955 nm to 1100 nm.

3. In paragraph 1, The above first laser generator and the second laser generator Multiple lamps, A gain medium that absorbs the light generated by the lamp and A multi-wavelength laser irradiation device characterized in that it further comprises a pair of mirrors each configured to face each other at both horizontal ends of the gain medium to resonate light in the gain medium.

4. In paragraph 3, A multi-wavelength laser irradiation device, characterized in that one mirror of the first laser generator has a reflectivity of at least 97% or more, and the other mirror has a reflectivity of 78% to 83%.

5. In paragraph 3, A multi-wavelength laser irradiation device, characterized in that one mirror of the second laser generator has a reflectivity of at least 97% or more, and the other mirror has a reflectivity of 38% to 43%.

6. In paragraph 3, A multi-wavelength laser irradiation device characterized in that, instead of the above reflector, both ends of the gain medium are coated to reflect the same reflectivity as above.

7. In paragraph 1, The first temperature control unit comprises a first cooling water chamber circulating through a tube inside the first laser generator to maintain the temperature of the lamp and gain medium of the first laser generator at an appropriate temperature. A first heating unit for increasing the temperature of the first cooling water chamber, and It comprises a first cooling fan that lowers the temperature of the first cooling water chamber, The second temperature control unit is a second cooling water chamber that circulates through a tube inside the second laser generator to maintain the temperature of the lamp and gain medium of the second laser generator at an appropriate temperature. A second heating unit for increasing the temperature of the second cooling water chamber, and A multi-wavelength laser irradiation device characterized by further including a second cooling fan for lowering the temperature of a second cooling water chamber.

8. In paragraph 1, The above cooling unit is attached to the inside of the main body and has a gas can cover into which a gas can is inserted. The first hose is connected to the bottom of the gas can cover and is used as a path for the gas from the gas can to flow. A first pressure sensor, which is connected to the lower part of the gas can cover and operates on power from the first power supply, and checks whether a gas can is inserted into the gas can cover; A chamber connected to one side of the first hose and storing cooling gas, A first opening / closing valve that controls the gas output in the central part except for both ends of the first hose located between the gas can cover and the chamber, and operates under the control of the first power supply unit and the control unit. A first level sensor coupled to the upper side of the chamber, detecting the presence or absence of gas and operating under the control of the first power supply and the control unit, A second level sensor coupled to the lower side of the chamber, detects the presence or absence of gas, and operates under the control of the first power supply and the control unit. An exhaust port connected to one side of the chamber and discharging the gas inside the chamber to the outside; A second opening / closing valve that opens and closes the exhaust port to discharge gas inside the chamber to the outside, and operates under the control of the first power supply and the control unit. A second pressure sensor is connected to the lower center of the chamber and checks the presence or absence of gas in the chamber. A multi-wavelength laser irradiation device characterized in that it further includes a second hose connecting the chamber and the handpiece and used as a passage for cooling gas.

9. In paragraph 1, A multi-wavelength laser irradiation device characterized in that the handpiece is provided at one end of the handpiece and further includes a correction lens that corrects the dispersed laser beam to be parallel.

10. In paragraph 1, The above tip is a multi-wavelength laser irradiation device characterized in that it further includes a lens section for outputting a laser generated from the main body with a preset laser output spot size.

11. In paragraph 10, A multi-wavelength laser irradiation device characterized in that the lens section of the above tip includes at least one and less than five lenses inside, and the lenses may be configured with a concave lens on one side and a convex lens on the other side, or may be concave lenses on both sides, or may be convex lenses on both sides, and are configured by combining the above lenses according to the laser irradiation beam size.

12. A step of turning on power from the first power supply unit of the main body and transmitting power to the second power supply unit of the handpiece; A step of determining whether a laser output signal is input from the control controller of the handpiece; In the step of determining whether a laser output signal is input from the control controller of the above handpiece, if it is determined that a laser output signal is input, the step of generating a laser by operating the laser generation unit according to the control of the display unit and the control unit; A step in which a laser generating unit is operated according to the control of the display unit and the control unit, a first laser generator generates a laser having a wavelength of 720 nm to 780 nm, and a second laser generator generates a laser having a wavelength of 955 nm to 1100 nm; A step of executing an operation to maintain the temperature in a temperature control unit to maintain an appropriate temperature of the laser generator when generating a laser from the first laser generator and the second laser generator; A step of transmitting the laser generated from the laser generating unit to the handpiece through an optical fiber and irradiating the transmitted laser to the patient through the tip; A step of irradiating cooling gas from the cooling section of the main body to the nozzle of the handpiece; A step of determining whether a laser output signal is input from the control controller of the handpiece; and A multi-wavelength laser irradiation method characterized by comprising: a step of determining whether a laser output signal has been input from a control controller of a handpiece; a step of returning to a step of generating a laser by operating a laser generating unit according to the control of a display unit and a control unit when it is determined that a laser output signal has been input; 13. In paragraph 12, A multi-wavelength laser irradiation method, characterized in that the temperature control unit comprises a first temperature control unit for controlling the temperature of a first laser generator and a second temperature control unit for controlling the temperature of a second laser generator, wherein the temperature control unit performs an operation to maintain the temperature of the laser generator at an appropriate temperature.

14. In paragraph 13, A multi-wavelength laser irradiation method, characterized in that the first temperature control unit maintains the temperature of the first laser generator at 50°C to 65°C, and the second temperature control unit maintains the temperature of the second laser generator at 20°C to 35°C.

15. In paragraph 12, A multi-laser irradiation method, characterized in that the handpiece further includes a step of collimating the dispersed laser beam with a correction lens before transmitting the laser to the tip, wherein the step of transmitting the laser generated from the laser generating unit to the handpiece through an optical fiber and irradiating the transmitted laser to the patient through the tip.

16. In paragraph 12, In the step of irradiating cooling gas from the cooling section of the above main body to the nozzle of the handpiece, Step of attaching the gas can to the gas can cover of the cooling unit of the main body; A step of opening the first on-off valve when the gas can is combined and the combination of the gas can is sensed by the first pressure sensor, filling the gas up to the first level sensor of the chamber, and closing the first on-off valve when the sensing value is detected by the first level sensor; A step of determining whether the laser has been irradiated to the patient in the control unit of the main body; and A multi-laser irradiation method characterized in that it further comprises a step of irradiating gas to the patient through a nozzle while opening the third opening / closing valve of the handpiece when it is determined that the laser has been irradiated in the step of determining whether the laser has been irradiated to the patient.

17. In paragraph 16, At the stage where the third opening / closing valve of the above handpiece opens and gas is irradiated to the patient through the nozzle, A step of determining whether there is no change in the values ​​of the first pressure sensor and the second pressure sensor; In the step of determining whether there is no change in the values ​​of the first pressure sensor and the second pressure sensor, if it is determined that there is no change, a step of determining that all gas inside the gas can has been exhausted; and A multi-laser irradiation method characterized by further comprising a step of opening a second opening / closing valve of the chamber and opening an exhaust port to match the pressure inside the chamber with the external pressure.

18. In paragraph 12, In the step of transmitting the laser generated from the laser generating unit to the handpiece through an optical fiber and irradiating the transmitted laser to the patient through the tip; A multi-wavelength laser irradiation method characterized in that the laser irradiated to the patient is a laser having a wavelength of 720 nm to 780 nm generated from the first laser generator and a laser having a wavelength of 955 nm to 1100 nm generated from the second laser generator.

19. In paragraph 18, A multi-wavelength laser irradiation method characterized in that the laser irradiated to the patient is a laser having a wavelength of 720 nm to 780 nm generated from the first laser generator and a laser having a wavelength of 955 nm to 1100 nm generated from the second laser generator, which are irradiated simultaneously or with a time difference of 200 ms.

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