Apparatus and method for emitting multi-wavelength laser

Abstract

To provide an apparatus and a method for emitting multi-wavelength laser for controlling the pressure of cooling gas.SOLUTION: An apparatus for emitting multi-wavelength laser includes: a laser generation part that generates laser; a temperature adjustment part that operates using power from a first power supply part; and a cooling part that operates using the power from the first power supply part, the temperature adjustment part which maintains an appropriate temperature to enhance laser output efficiency when the laser generation part generates laser, and the cooling part which operates using the power from the first power supply part and emits cooling gas to the user's skin. The laser generation part includes a first laser generation part and a second laser generation part that output the laser of different wavelengths. The temperature adjustment part includes a first temperature adjustment part that controls the temperature of the first laser generation part and a second temperature adjustment part that controls the temperature of the second laser generation part.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

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

[0003] There are many lasers commonly used for dermatological applications such as the treatment of vascular or pigmented lesions, hair removal and skin peeling. The principle of selective photothermolysis is the basis of many laser treatments and is used to treat many conditions such as varicose veins, flammeus nevi, other opaque vascular lesions, and pigmented lesions, including tattoos. The dermal and epidermal layers containing the target structure are typically irradiated with light from a laser or flash lamp. The wavelength of such light is chosen so that its energy is preferentially or selectively absorbed within the structure. This creates localized heating with the purpose of raising the temperature to a point where constituent proteins denature or pigment particles diffuse.

[0004] Skin treatment devices are known that irradiate a subject's skin with lasers of various wavelengths in an attempt to improve the condition of the skin.

[0005] Examples of lasers used in such skin treatment devices include 1064nm and 755nm wavelength lasers. The 1064nm wavelength laser acts on the dermal blood vessels and can achieve hair removal and skin regeneration effects regardless of skin color. That is, such a 1064nm wavelength laser is useful for dermal blood vessel treatment because it has a deep penetration depth into the skin and a high oxyhemoglobin absorption rate. In addition, the 1064nm wavelength laser does not have a high melanin absorption rate, so it can achieve excellent hair removal effects even on subjects with dark skin. In addition, the 1064nm wavelength laser not only has a deep penetration depth but also has a high absorption rate, stimulating collagen in the dermis layer. This results in a high improvement in fine wrinkles and skin regeneration effect.

[0006] 755nm wavelength lasers have an epidermis whitening effect and are highly effective at removing hair in light-skinned subjects. In other words, although the penetration depth of 755nm wavelength lasers is slightly shallower than that of 1064nm wavelength lasers, they have a higher melanin absorption rate and therefore a better hair removal effect than 1064nm wavelength lasers. However, due to the high melanin absorption rate, there are limitations on the skin color types. It cannot be used on dark-skinned subjects because the skin absorbs the energy first and causes damage to the skin. On the other hand, 755nm wavelength lasers have a high melanin absorption rate and therefore have a whitening effect that brightens the skin color.

[0007] By combining the 1064nm and 755nm wavelength lasers to treat a subject, it is possible to improve the effects of vascular treatment, hair removal, and whitening according to the skin penetration depth and skin color. For this reason, recent skin treatment devices using lasers are equipped with the ability to irradiate at least two or more wavelengths of laser simultaneously or alternately.

[0008] At this time, in order to increase the output efficiency of lasers with different wavelengths, it is necessary to delicately control the temperature of the laser generating device. In addition, when the laser is irradiated, cooling gas is irradiated to relieve pain. At this time, in order to irradiate the cooling gas normally, it is necessary to control the internal pressure of the internal cooling gas output structure. Summary of the Invention [Problem to be solved by the invention]

[0009] In order to solve the above problems, the present invention provides a multi-wavelength laser irradiation device and irradiation method that irradiates a 1064 nm wavelength laser and a 755 nm wavelength laser simultaneously or alternately, controls the temperature inside the laser resonator using cold / hot water for maximum efficiency of the laser output, and controls the pressure inside the gas flow path inside the product for outputting the cooling gas when outputting the cooling gas to relieve pain after outputting the laser. [Means for solving the problem]

[0010] In order to achieve the above-mentioned object, the multi-wavelength laser irradiation device and irradiation method of the present invention are configured to include a main body which performs overall control and operation, a handpiece which operates under the control of the main body and is connected to the main body by wire, and a chip which can be coupled to one side of the handpiece.

[0011] The main body is composed of a first power supply unit that enables overall operation, a display unit that operates by receiving power from the first power supply unit and provides a treatment details screen and a treatment details setting control screen to the user and the practitioner, a control unit that operates by receiving power from the first power supply unit and controls overall operation according to the treatment details setting value of the display unit, a laser generating unit that operates by receiving power from the first power supply unit and according to the control of the control unit to generate a laser, a temperature adjusting unit that operates by receiving power from the first power supply unit and maintains an appropriate temperature to increase laser output efficiency when generating a laser in the laser generating unit, and a cooling unit that operates by receiving power from the first power supply unit and irradiates cooling gas to the user's skin.

[0012] The laser generating unit may include a first laser generator and a second laser generator, each of which outputs a laser having a different wavelength, and the temperature controlling unit may include a first temperature controlling unit that controls a temperature of the first laser generator and a second temperature controlling unit that controls a temperature of the second laser generator.

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

[0014] The first and second laser generators may each further include a plurality of lamps, a gain medium for absorbing light generated from the lamps, and a reflector configured with a pair of mirrors facing each other on both horizontal ends of the gain medium to resonate light in the gain medium.

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

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

[0017] Instead of the reflector, both ends of a gain medium can be coated with the same reflectance as above.

[0018] The first temperature control unit includes a first cooling water chamber circulating through a pipe inside the first laser generator to maintain temperatures of a lamp and a gain medium of the first laser generator at appropriate temperatures, a first heating unit to increase the temperature of the first cooling water chamber, and a first cooling fan to decrease the temperature of the first cooling water chamber. The second temperature control unit may further include a second cooling water chamber circulating through a pipe inside the second laser generator to maintain temperatures of a lamp and a gain medium of the second laser generator at appropriate temperatures, a second heating unit to increase the temperature of the second cooling water chamber, and a second cooling fan to decrease the temperature of the second cooling water chamber.

[0019] The cooling unit includes a gas can cover attached inside the main body and into which a gas can is inserted; a first hose connected to a lower end of the gas can cover and used as a flow path for gas in the gas can; a first pressure sensor connected to a lower portion of the gas can cover, operated by power from a first power source, and used to check whether a gas can is inserted into the gas can cover; a chamber connected to one side of the first hose and storing a cooling gas; a first opening / closing valve connected to one side of the first hose and used to control gas output to a center portion of the first hose, excluding both ends, located between the gas can cover and the chamber, and operated by power from the first power source and control of the control unit; The cooling gas supply may further include a first level sensor operated under the control of power from the power supply unit and the control unit; a second level sensor coupled to one side of the lower end of the chamber, detecting the presence or absence of gas, and operating under the control of power from the first power supply unit and the control unit; an exhaust port coupled to one side of the chamber and discharging gas within the chamber to the outside; a second opening / closing valve operating under the control of power from the first power supply unit and the control unit, opening and closing the exhaust port to discharge the gas within the chamber to the outside; a second pressure sensor coupled to the lower center of the chamber, checking the presence or absence of gas within the chamber; and a second hose connecting the chamber and the handpiece, used as a flow path for cooling gas.

[0020] The handpiece may further include a correction lens provided at one end of the handpiece for correcting a diverging laser beam to a parallel beam.

[0021] The chip may further include a lens unit for outputting the laser generated in the body with a preset laser output spot size.

[0022] The lens portion of the chip includes at least one and less than five lenses therein, and the lens may be configured with a concave lens on one side and a convex lens on the other side, or with both concave lenses or both convex lenses, and the lenses can be combined according to the size of the laser irradiation beam.

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

[0024] In the step of performing an operation for maintaining a temperature by a temperature controller to maintain an appropriate temperature of the laser generators, the temperature controller may include a first temperature controller for controlling a temperature of the first laser generator and a second temperature controller for controlling a 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 the laser generated in the laser generating unit to the handpiece via an optical fiber and irradiating the transmitted laser to the patient via the 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 part of the main body to the nozzle of the handpiece, the method may further include the steps of: connecting a gas can to a gas can cover of the cooling part of the main body; when the gas can is connected and the connection of the gas can is detected by a first pressure sensor, opening a first opening / closing valve, filling the chamber with gas up to a first level sensor, and closing the first opening / closing valve when a detection value is detected by the first level sensor; determining whether a laser has been irradiated to a patient by a control part of the main body, and when it is determined that a laser has been irradiated to the patient in the step of determining whether a laser has been irradiated to the patient, opening a third opening / closing valve of the handpiece and irradiating gas to the patient through the nozzle.

[0028] The method may further include the steps of opening a third opening / closing valve of the handpiece and irradiating gas to a patient through a nozzle, determining whether there is a change in values ​​of the first pressure sensor and the second pressure sensor, determining whether there is a change in values ​​of the first pressure sensor and the second pressure sensor, and determining that the gas in the gas canister has been used up if it is determined that there is no change, and opening a second opening / closing valve of the chamber, opening an exhaust port, and adjusting the air pressure in the chamber to the external air pressure.

[0029] A step of transmitting a laser generated in a laser generating unit to a handpiece through an optical fiber and irradiating the transmitted laser to a patient through a tip, The laser irradiated to the patient can be a laser having a wavelength of 720 nm to 780 nm generated by the first laser generator and a laser having a wavelength of 955 nm to 1100 nm generated by the second laser generator simultaneously.

[0030] The laser irradiated to the patient can be a laser having a wavelength of 720 nm to 780 nm generated by the first laser generator and a laser having a wavelength of 955 nm to 1100 nm generated by the second laser generator, either simultaneously or with a time lag of 200 ms. Effect of the Invention

[0031] According to this feature, the present invention can output a laser with maximum efficiency by maintaining an appropriate internal temperature of the laser generator.

[0032] After the laser is irradiated, the cooling gas is output, which reduces pain. At this time, the pressure of the gas flow passage inside the main body is controlled to output the cooling gas, which allows the cooling gas to be output smoothly, and the risk of the gas canister exploding is reduced by controlling the pressure of the internal gas flow passage.

[0033] In addition, it is possible to simultaneously irradiate a 755 nm wavelength laser and a 1064 nm wavelength laser, and to vary the irradiation time interval up to a maximum of 200 ms, which has the effect of enabling detailed control according to skin characteristics and skin color. [Brief description of the drawings]

[0034] [Figure 1] 1 is a configuration diagram of a multi-wavelength laser irradiation device according to an embodiment of the present invention. [Diagram 2]2 is a diagram illustrating the configuration of a temperature control unit of a multi-wavelength laser irradiation device according to an embodiment of the present invention. [Diagram 3] 2 is a diagram showing the configuration of a cooling unit in a multi-wavelength laser irradiation device according to an embodiment of the present invention; [Figure 4] 1 is a schematic diagram showing a cooling section and a cooling flow path in a multi-wavelength laser irradiation device according to an embodiment of the present invention. [Diagram 5] 2 is a flowchart of a multi-wavelength laser irradiation method according to an embodiment of the present invention. [Figure 6] 4 is a flowchart illustrating a cooling gas output method in a multi-wavelength laser irradiation method according to an embodiment of the present invention. [Figure 7] 4 is a flowchart illustrating a method for controlling pressure inside a body in a multi-wavelength laser irradiation method according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0035] Hereinafter, the embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains can easily carry out the embodiments. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts that are not related to the description are omitted, and similar parts are designated by similar reference numerals throughout the specification.

[0036] Throughout the specification, a part being "connected (connected, in contact, coupled)" to another part includes not only a part being "directly connected" to another part, but also a part being "indirectly connected" to another part through another member therebetween. Furthermore, when a part is said to "include" a certain component, this does not mean that the part excludes the other component, but that the part can further include the other component, unless otherwise specified.

[0037] The terms used in this specification are merely used to describe certain embodiments and are not intended to limit the present invention. A singular expression includes a plural expression unless the context clearly indicates otherwise. In this specification, terms such as "include" or "have" are intended to specify the presence of a feature, number, step, operation, component, part, or combination thereof described in this specification, and should be understood not to preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0038] Next, a multi-wavelength laser irradiation apparatus and irradiation method according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0039] 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 section of the multi-wavelength laser irradiation device according to one embodiment of the present invention, and FIG. 3 is a configuration diagram of a cooling section of the multi-wavelength laser irradiation device according to one embodiment of the present invention.

[0040] Referring to Figures 1 to 3, the multi-wavelength laser irradiation device is configured to include a main body 10 which performs overall control and operation, a handpiece 20 which operates under the control of the main body 10 and is connected to the main body 10 by wire, and a chip 30 which can be coupled to one side of the handpiece 20.

[0041] The main body 10 includes a first power supply unit 11 for enabling overall operation, a display unit 12 that operates by receiving power from the first power supply unit 11 and provides a treatment details screen and a treatment details 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 a treatment details setting value of the display unit 12, a laser generating unit 14 that operates by receiving power from the first power supply unit 11 under the control of the control unit 13 and generates a laser, a temperature adjusting unit 15 that operates by receiving power from the first power supply unit 11 and maintains an appropriate temperature for increasing laser output efficiency when a laser is generated by the laser generating unit 14, 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.

[0042] The main body 10 and the handpiece 20 are connected by wire, and in the present invention, it is preferable that the laser generated by the laser generating unit 14 of the main body 10 is transmitted to the handpiece 20 via an optical fiber.

[0043] The display unit 12 provides a UI for detailed settings to the user, and the user can adjust detailed settings of the laser output on the display unit 12. In addition, the display unit 12 controls the laser output and stops, and displays errors occurring during the operation of the device to the practitioner and the user through the display unit 12.

[0044] When the control unit 13 detects laser output, stop, detailed settings, etc. from the display unit 12, it controls the overall operation of the main body and the handpiece.

[0045] The laser generating unit 14 is composed of a first laser generator 14-1 and a second laser generator 14-2, each of which outputs a laser having a different wavelength. 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 is not limited thereto.

[0046] The first laser generator 14-1 and the second laser generator 14-2 each include a plurality of lamps, a gain medium for absorbing light generated from the lamps, and a reflector consisting of a pair of mirrors facing each other on both horizontal ends of the gain medium to resonate light in the gain medium. At this time, the gain medium of the first laser generator is Nd:YAG, and the gain medium of the second laser generator is Alexandrite.

[0047] The reflectors have different reflectivities, with one mirror of the first laser generator having a reflectivity of at least 97% and the other mirror having a reflectivity of 78% to 83%.The reflectors of the second laser generator have one mirror of at least 97% and the other mirror having a reflectivity of 38% to 43%.

[0048] In this case, instead of the reflecting portion, both ends of the gain medium can be coated with the same reflectance as above.

[0049] The temperature control unit 15 includes a first temperature control unit 16 for controlling the temperature of a first laser generator, and a second temperature control unit 17 for controlling the temperature of a second laser generator.

[0050] The first temperature control unit 16 includes 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 decreases the temperature of the first cooling water chamber 16-1.

[0051] The second temperature control unit 17 includes 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 raises 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.

[0052] The cooling unit 18 is installed inside the main body and includes a gas can cover 18-1 into which a gas can is inserted, a first hose (not shown) that is connected to the bottom of the gas can cover 18-1 and is used as a flow path through which gas from the gas can flows, a first pressure sensor 18-2 that is connected to the bottom of the gas can cover 18-1 and operates with power from the first power supply unit 11 to check whether a gas can is inserted into the gas can cover 18-1, a chamber 18-4 that is connected to one side of the first hose and stores a cooling gas, a first opening / closing valve 18-3 that controls the gas output to the center of the first hose located between the gas can cover 18-1 and the chamber 18-4, excluding both ends, and operates under the control of the power of the first power supply unit 11 and the control unit 13, and a first opening / closing valve 18-3 that is connected to one side of the upper part of the chamber 18-4 and detects the presence or absence of gas and operates with the power of the first power supply unit 11 and the control unit 13. The device further includes a first level sensor 18-5 operated under the control of the control unit 13, a second level sensor 18-6 connected to one side of the lower portion of the chamber 18-4 to detect the presence or absence of gas and operated under the control of the power of the first power supply unit 11 and the control unit 13, an exhaust port 18-8 connected to one side of the chamber 18-4 to discharge the gas in the chamber 18-4 to the outside, a second opening / closing valve 18-7 operated under the control of the power of the first power supply unit 11 and the control unit 13 to open and close the exhaust port 18-8 to discharge the gas in the chamber 18-4 to the outside, a second pressure sensor 18-9 connected to the lower center of the chamber 18-4 to check the presence or absence of gas in the chamber 18-4, and a second hose (not shown) connecting the chamber 18-4 to the handpiece 20 and used as a flow path for the cooling gas.

[0053] When irradiating cooling gas through the cooling unit 18, first, the gas can is connected inside the gas can cover 18-1, and then the first pressure sensor 18-2 checks whether the gas can is connected or not. Then, the control unit 13 controls the first opening / closing valve 18-3 to open and output the gas from the gas can.

[0054] When gas is output from the gas canister, the gas fills the chamber 18-4 through the first hose, and when all sensing values ​​are 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 to stop the gas output from the gas canister. At this time, it is determined that the gas has filled up to the first level sensor 18-5.

[0055] When the laser is irradiated and cooling gas is output, the gas filled in chamber 18-4 is irradiated to nozzle 24 of handpiece 20 via the second hose, and this process is repeated until the sensing value of first level sensor 18-5 in chamber 18-4 is not detected first, but the first opening / closing valve 18-3 is kept closed until the sensing value of second level sensor 18-6 is no longer detected.

[0056] 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 again fill the cooling gas from the gas canister into the first level sensor 18-5 of the chamber 18-4 until a sensing value is detected.

[0057] At this time, if there is no change in the sensed values ​​of the first pressure sensor 18-2 and the second pressure sensor 18-9, it is determined that the gas inside the gas canister has been used up, and a gas canister replacement notification is output through the display unit 12. The sensed value of the first pressure sensor 18-2 detects the weight of the gas canister and the weight of the gas inside the gas canister, so if there is no change in the sensed value, it is determined that the cooling gas inside the gas canister has been used up. However, even if the sensed value of the first pressure sensor 18-2 is determined to be unchanged, if there is a change in the sensed value of the second pressure sensor 18-9, there is residual gas in the chamber 18-4, so if the sensed value of the first pressure sensor 18-2 is determined to be unchanged and a gas canister replacement notification is output through the display unit 12, treatment must be stopped despite the residual gas. Therefore, if it is not determined that there is no change in the sensed values ​​of both the first pressure sensor 18-2 and the first pressure sensor 18-9, a gas canister replacement notification is output through the display unit 12.

[0058] When the first pressure sensor 18-2 and the second pressure sensor 18-9 detect no change in the sensing value, a notification to replace the gas can is output to the display unit 12, and since the pressure in the cooling unit 18 rises due to internal heat generated by the operation of the structure of the main body 10, the second opening and closing valve 18-7 is opened to discharge the pressure in the chamber 18-4 to the outside through the exhaust port 18-8. The pressure in the cooling unit 18 is reduced by discharging the pressure in the chamber 18-4 through the exhaust port 18-8. Then, a new gas can is connected to the gas can cover 18-1, and gas is filled until the sensing value is detected by the first level sensor 18-5.

[0059] Also, the control unit 13 of the main body 10 controls the third opening / closing valve 23 of the handpiece 20 according to the output amount of the cooling gas preset in advance, to output the cooling gas from the nozzle 24 .

[0060] The handpiece 20 includes a housing 21 for protecting the internal components from external impact. The housing 21 includes a second power supply unit 22 connected to the first power supply unit 11 of the main body 10 by wire to receive power, a third opening / closing valve 23 that receives power from the second power supply unit 22 and is opened / closed under the control of the control unit 13 to output the cooling gas output from the cooling unit 18 of the main body 10, a nozzle 24 from which the cooling gas is ejected depending on whether the third opening / closing valve 23 is opened / closed, a control controller 25 that is located on one side of the housing 21 of the handpiece 20 and can control detailed settings of the treatment and whether the overall operation is performed, and a correction lens 26 that is provided at one end of the handpiece 30 and corrects the laser beam to be parallel when the laser beam is dispersed through an optical fiber.

[0061] The controller 25 is characterized by being either a touch type or a button type.

[0062] The 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 to enable attachment and detachment to the handpiece 20, a lens unit 33 configured inside the housing 31 for outputting a laser generated by the main body 10 with a preset laser output spot size, and a support unit 34 connected to one side of the housing 31 to maintain a constant laser irradiation length in relation to the practitioner's skin.

[0063] The lens portion 33 of the chip 30 includes at least one but less than five lenses therein, and the lens may be configured with a concave lens on one side and a convex lens on the other side, or both sides may be concave lenses or both sides may be convex lenses, and the lenses may be configured by combining the above lenses depending on the size of the laser irradiation beam.

[0064] As an example, when outputting a beam size of 20 mm, the dispersed laser beam is collimated by the correction lens 26 of the handpiece 20, and the beam size is adjusted by a combination of lenses in the lens section 33 of the chip 30. At this time, two lenses are combined, one lens having a convex surface and the other having a concave surface, and the other lens having both concave surfaces.

[0065] Next, a multi-wavelength laser irradiation method according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0066] 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 in the multi-wavelength laser irradiation method according to one embodiment of the present invention, and FIG. 7 is a flowchart of an internal body pressure control method in the multi-wavelength laser irradiation method according to one embodiment of the present invention.

[0067] 5 to 7, first, power is turned on from 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).

[0068] It is determined whether or not a laser output signal is input from the controller 24 of the handpiece 20 (S11). At this time, the output can be controlled not only by the controller 24 of the handpiece 20 but also by the foot switch or the display unit 12.

[0069] In step S11, it is determined whether a laser output signal is input from the controller 24 of the handpiece 20. If it is determined that a laser output signal is input, the laser generating unit 14 operates under the control of the display unit 12 and the control unit 13 to generate a laser, S12.

[0070] In step S11 of determining whether a laser output signal is input from the control controller 24 of the handpiece 20, if a laser output signal is not input, the process waits in step S10 of starting power from the first power supply unit 11 of the main body 10 and supplying power to the second power supply unit 21 of the handpiece 20, S13.

[0071] Under the control of the display unit 12 and the control unit 13, the laser generator 14 operates, and 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, the laser generated by the first laser generator 14-1 is preferably a laser having a wavelength of 755 nm, and the laser generated by the second laser generator 14-2 is preferably a laser having a wavelength of 1064 nm, but is not limited thereto.

[0072] When the first laser generator 14-1 and the second laser generator 14-2 generate lasers, the temperature controller 15 performs an operation for maintaining the temperature in order to maintain the appropriate temperature of the laser generators, S15. At this time, the temperature controller 15 includes a first temperature controller 16 for controlling the temperature of the first laser generator 14-1 and a second temperature controller 17 for controlling the temperature of the second laser generator 14-2.

[0073] The first temperature control unit 16 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 first laser generator 14-1 is preferably at 50° C. and the second laser generator 14-2 is preferably at 29° C., but is not limited thereto.

[0074] When the first laser generator 14-1 and the second laser generator 14-2 generate laser, internal heat is generated, and each of them is configured to include a temperature sensor (not shown) to detect this. The first laser generator 14-1 and the second laser generator 142 perform cooling and heating by flowing cooling water inside each laser generator. To this end, 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 first laser generator 14-1 at an appropriate temperature of 50°C, and when the temperature of the first laser generator 14-1 is detected by the temperature sensor and exceeds 50°C, the first cooling fan 16-3 is used to cool the first cooling water chamber 16-1 to lower the cooling water temperature.

[0075] In order to maintain the appropriate temperature of the second laser generator 14-2 at 29°C, the second temperature control unit 17 uses the second cooling fan 17-3 to cool the second cooling water chamber 17-1 to lower the cooling water temperature, and if the temperature of the second laser generator 17-1 is detected by a temperature sensor and is less than 29°C, the second heating unit 17-2 heats the second cooling water chamber 17-1 to raise the cooling water temperature.

[0076] When the first laser generator 14-1 and the second laser generator 14-2 generate lasers, the temperature control unit 15 performs an operation for maintaining the temperature in order to maintain the appropriate temperature of the laser generators, step S15. After that, the laser generated by the laser generator 14 is transmitted to the handpiece 20 via the optical fiber, and the transmitted laser is irradiated to the patient through the tip 30, step S16.

[0077] At this time, the laser beams irradiated to the patient are a laser beam having a wavelength of 720 nm to 780 nm generated by the first laser generator 14-1 and a laser beam having a wavelength of 955 nm to 1100 nm generated by the second laser generator 14-2, which are irradiated simultaneously. In the present invention, the laser beam generated by the first laser generator 14-1 is preferably a laser beam having a wavelength of 755 nm, and the laser beam generated by the second laser generator 14-2 is preferably a laser beam having a wavelength of 1064 nm, but is not limited thereto.

[0078] The laser irradiated to the patient may be a laser having a wavelength of 720 nm to 780 nm generated by the first laser generator 14-1 and a laser having a wavelength of 955 nm to 1100 nm generated by the second laser generator 14-2, which may be irradiated simultaneously or with a time difference of 200 ms, but is not limited to this.

[0079] At this time, the handpiece 20 collimates the divergent laser beam with the corrective lens 26 before irradiating the tip 30 with the laser.

[0080] After step S16 of irradiating the patient with the laser from the tip portion 30, cooling gas is irradiated from the cooling portion 18 of the main body 10 to the nozzle 23 of the handpiece 20 (S17).

[0081] After the step of irradiating the nozzle 23 of the handpiece 20 with the cooling gas (S17), it is determined whether a laser output signal is input from the controller 24 of the handpiece 20 (S18).

[0082] In step S18, it is determined 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 process returns to step S12, in which the laser generating unit 14 operates under the control of the display unit 12 and the control unit 13 to generate a laser, S19.

[0083] In step S18, it is determined whether a laser output signal is input from the controller 24 of the handpiece 20, and if the laser output signal is not input, the laser output is terminated. At this time, the power supply of the device is not completely turned off, but the device waits in step S10 where the power supply is turned on from the first power supply unit 11 of the main body 10 and the power is supplied to the second power supply unit 21 of the handpiece 20.

[0084] In the step of irradiating the cooling gas from the cooling part 18 of the main body 10 to the nozzle 23 of the handpiece 20 (S17), first, a gas can is coupled to the gas can cover 181 of the cooling part 18 of the main body 10 (S20).

[0085] When a gas can is connected (S20), and the first pressure sensor 18-2 senses the connection of the gas can, 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 sensed 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 up to the first level sensor 18-5.

[0086] Next, the control unit 13 of the main body 10 judges whether the laser has been irradiated to the patient (S22).

[0087] In step S22 of determining whether the laser has been irradiated to the patient, if it is determined that the laser has been irradiated, the third opening / closing valve 22 of the handpiece 20 opens and gas is irradiated to the patient from the nozzle 23, S23.

[0088] This means that when the laser is irradiated onto the patient's skin, the heat generated can be cooled with cooling gas to prevent burns and relieve pain.

[0089] After the step S23 of opening the third opening / closing valve 22 of the handpiece 20 and irradiating the gas to the patient through the nozzle 23, it is determined whether there is a change in the values ​​of the first pressure sensor 18-2 and the second pressure sensor 18-9, S30.

[0090] In step S30, it is determined whether there is any change in the values ​​of the first pressure sensor 18-2 and the second pressure sensor 18-9. If it is determined that there is no change, it is determined that all the gas inside the gas canister has been consumed (S31), and the second opening / closing valve 18-7 of the chamber 18-4 is opened, and the exhaust port 18-8 is opened to adjust the air pressure inside the chamber to the external air pressure (S32).

[0091] After step S23 in which the third opening / closing valve 22 of the handpiece 20 is opened and gas is irradiated to the patient through the nozzle 23, it is determined whether the value of the first pressure sensor 18-2 decreases (S40).

[0092] In step S40 of determining whether the value of the first pressure sensor 18-2 is decreasing, 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.

[0093] After the step S23 of opening the third opening / closing valve 22 of the handpiece 20 and irradiating the gas to the patient through the nozzle 23, it is determined whether there is a sensing value in the second level sensor 18-6, S50.

[0094] In step S50 of determining whether there is a sensing value in the second level sensor 18-6, if it is determined that there is a sensing value in the second level sensor 18-6, the first opening / closing valve 18-3 opens and gas is filled until a sensing value is detected in the first level sensor 18-5, S51.

[0095] The step S30 of determining whether there is a 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 in the second level sensor 18-6 are performed continuously after the step S10 of turning on the power supply in the first power supply unit 11 of the main body 10 and transmitting power to the second power supply unit 21 of the handpiece 20.

[0096] This prevents the pressure inside the main body 10 from becoming higher than the pressure outside, and prevents the explosion of the gas canister and the mistaken injection of gas. In addition, the cooling gas is continuously filled inside the cooling unit, preventing inconveniences such as interrupting treatment.

[0097] 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. [Explanation of symbols]

[0098] 10 Main unit 11 1st power supply section 12 Display section 13 Control section 14 Laser generating unit 15 Temperature control section 18 Cooling section 20 Handpiece 21 Housing 22 2nd power supply section 23 Third opening and closing valve 24 Nozzles 25 Controller 26 Corrective Lenses 30 Tips 31 Housing 32 Detachable parts 33 Lens section 34 Support part

Claims

1. A main body in which the overall control and operation takes place; A handpiece that is operated by the control of the main body and is connected to the main body by a wire; and a tip connectable to one side of the handpiece; The main body includes a first power supply unit for enabling the overall operation of the main body; A display unit that receives power from the first power supply unit and operates to provide a treatment detail screen and a treatment detail setting control screen to a user and a practitioner; A control unit that receives power from the first power supply unit and controls an overall operation according to a detailed treatment setting value of the display unit; a laser generating unit that receives power from the first power supply unit, operates under the control of a control unit, and generates a laser; a temperature control unit that receives power from the first power supply unit, and maintains an appropriate temperature for increasing laser output efficiency when the laser generating unit generates a laser; The device includes a cooling unit that receives power from the first power supply unit, and that irradiates a cooling gas onto the skin of a user. The laser generating unit includes a first laser generator and a second laser generator, each of which outputs a laser having a different wavelength. The multi-wavelength laser irradiation device, characterized in that the temperature control unit includes a first temperature control unit that controls a temperature of a first laser generator and a second temperature control unit that controls a temperature of a second laser generator.

2. 2. The multi-wavelength laser irradiation device according to claim 1, wherein 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. The first laser generator and the second laser generator are Multiple lamps, a gain medium that absorbs the light generated by the lamp; and 2. The multi-wavelength laser irradiation device according to claim 1, further comprising a reflecting portion each consisting of a pair of mirrors arranged to face each other on both horizontal ends of the gain medium in order to resonate light in the gain medium.

4. 4. The multi-wavelength laser irradiation device according to claim 3, wherein one mirror of the first laser generator has a reflectance of at least 97% or more, and the other mirror has a reflectance of 78% to 83%.

5. The multi-wavelength laser irradiation device according to claim 3, wherein one mirror of the second laser generator has a reflectance of at least 97% or more, and the other mirror has a reflectance of 38% to 43%.

6. 4. The multi-wavelength laser irradiation device according to claim 3, wherein, instead of the reflecting portion, both ends of a gain medium are coated to reflect the same reflectance as the reflecting portion.

7. The first temperature control unit includes a first cooling water chamber that circulates water through a pipe 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 that increases the temperature of the first cooling water chamber; and It includes a first cooling fan that lowers the temperature of the first cooling water chamber. The second temperature control unit includes a second cooling water chamber that circulates water 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 2. The multi-wavelength laser irradiation device according to claim 1, further comprising a second cooling fan for lowering a temperature of the second cooling water chamber.

8. The cooling unit includes a gas can cover attached to the inside of the main body and into which a gas can is inserted; a first hose coupled to a lower portion of the gas can cover and used as a flow path for gas in the gas can; a first pressure sensor coupled to a lower portion of the gas can cover, operated by power from the first power supply unit, and configured to determine whether a gas can is inserted into the gas can cover; a chamber coupled to one side of the first hose and holding a cooling gas; a first opening / closing valve that controls gas output and is located in the center of the first hose between the gas can cover and the chamber, excluding both ends, and that operates under the control of the power of the first power supply unit and the control unit; a first level sensor coupled to one side of the upper stage of the chamber, detecting the presence or absence of gas, and operating under the control of the power of the first power supply unit and the control unit; a second level sensor coupled to one lower side of the chamber for detecting the presence or absence of gas and operating under the control of the power of the first power supply unit and the control unit; an exhaust port coupled to one side of the chamber for exhausting gas within the chamber to the outside; a second opening / closing valve that opens and closes the exhaust port to exhaust the gas in the chamber to the outside and is operated under the control of the power of the first power supply unit and the control unit; a second pressure sensor coupled to the central lower portion of the chamber for determining whether or not gas is present within the chamber; and 2. The multi-wavelength laser irradiation device according to claim 1, further comprising a second hose connecting the chamber and a handpiece and used as a passage for a cooling gas.

9. 2. The multi-wavelength laser irradiation device according to claim 1, wherein the handpiece further includes a correction lens provided at one end of the handpiece for correcting a diverging laser beam to a parallel beam.

10. The multi-wavelength laser irradiation device of claim 1, wherein the chip further includes a lens unit for outputting the laser generated in the main body with a preset laser output spot size.

11. The multi-wavelength laser irradiation device described in claim 10, characterized in that the tip lens portion includes at least one lens but less than five lenses inside, and the lenses are configured with a concave lens on one side and a convex lens on the other side, or with concave lenses on both sides and convex lenses on both sides, and the lenses are combined depending on the size of the laser irradiation beam.

12. activating a power supply from a first power supply unit of the main body and supplying power to a second power supply unit of the handpiece; determining whether a laser output signal is input from a controller of the handpiece; in the step of determining whether a laser output signal is input from the controller of the handpiece, when it is determined that a laser output signal is input, a laser generating unit is operated under the control of a display unit and a control unit to generate a laser; A laser generating unit is operated under the control of the display unit and the control unit, and the first laser generating unit generates a laser having a wavelength of 720 nm to 780 nm, and the second laser generating unit generates a laser having a wavelength of 955 nm to 1100 nm; performing an operation for maintaining a temperature in a temperature control unit to maintain an appropriate temperature of the laser generator when the first laser generator and the second laser generator generate lasers; The laser generated in the laser generator is transmitted to the handpiece via an optical fiber. The laser is then irradiated onto the patient from the tip. A step of irradiating a cooling gas from a cooling portion of the main body through a nozzle of a handpiece; determining whether a laser output signal is input from a controller of the handpiece; and if it is determined that a laser output signal has been inputted from the controller of the handpiece, returning to a step of operating a laser generating unit under the control of a display unit and a control unit to generate a laser.

13. 13. The multi-wavelength laser irradiation method of claim 12, wherein, in the step of performing an operation for maintaining a temperature by a temperature controller to maintain an appropriate temperature of the laser generators, the temperature controller includes a first temperature controller for controlling a temperature of the first laser generator and a second temperature controller for controlling a temperature of the second laser generator.

14. 14. The multi-wavelength laser irradiation method of claim 13, wherein the first temperature controller maintains a temperature of the first laser generator at 50° C. to 65° C., and the second temperature controller maintains a temperature of the second laser generator at 20° C. to 35° C.

15. 13. The multi-wavelength laser irradiation method according to claim 12, wherein, in the step of transmitting the laser generated in the laser generating unit to the handpiece via an optical fiber and irradiating the transmitted laser to the patient via a tip, the handpiece further comprises a step of collimating the dispersed laser beam using a correction lens before transmitting the laser to the tip.

16. The step of irradiating the nozzle of the handpiece with the cooling gas from the cooling part of the body includes: Attaching a gas can to a gas can cover of a cooling portion of the main body; a step of connecting the gas canister and opening a first opening / closing valve when the first pressure sensor detects the connection of the gas canister, filling the gas up to a first level sensor of the chamber, and closing the first opening / closing valve when the first level sensor detects a detection value; determining whether the laser has been irradiated on the patient by a control unit of the main body; 13. The multi-wavelength laser irradiation method according to claim 12, further comprising: if it is determined that the laser has been irradiated to the patient in the step of determining whether the laser has been irradiated to the patient, opening a third opening / closing valve of the handpiece and irradiating gas from a nozzle to the patient.

17. a third opening / closing valve of the handpiece is opened to irradiate gas from a nozzle to a patient; determining that there is no change in values ​​of the first pressure sensor and the second pressure sensor; determining that the gas in the gas can is completely used up when it is determined that 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 a change in the values ​​of the first pressure sensor and the second pressure sensor; 17. The multi-wavelength laser irradiation method according to claim 16, further comprising the step of opening a second opening / closing valve of the chamber and opening an exhaust port to adjust the air pressure in the chamber to the air pressure outside the chamber.

18. A step of transmitting a laser generated in a laser generating unit to a handpiece through an optical fiber and irradiating the transmitted laser to a patient through a tip, 13. The multi-wavelength laser irradiation method according to claim 12, wherein the laser irradiated to the patient is a laser having a wavelength of 720 nm to 780 nm generated by the first laser generator and a laser having a wavelength of 955 nm to 1100 nm generated by the second laser generator simultaneously.

19. The multi-wavelength laser irradiation method according to claim 18, characterized in that the laser irradiated to the patient is a laser having a wavelength of 720 nm to 780 nm generated by the first laser generator and a laser having a wavelength of 955 nm to 1100 nm generated by the second laser generator, irradiated simultaneously with a time difference of 200 ms.

Images