Multi-wavelength laser irradiation device and irradiation method
The multi-wavelength laser irradiation device efficiently controls temperature and relieves pain by using 1064nm and 755nm lasers with temperature regulation and cooling gas, addressing inefficiencies in existing devices.
Patent Information
- Application Number
- CN202311768432.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-06-29
- Filing Date
- 2023-12-21
- Publication Date
- 2024-12-31
AI Technical Summary
Existing skin care devices using multiple wavelength lasers face challenges in efficiently controlling temperature and pain relief during laser irradiation, particularly when treating different skin types and colors, due to varying absorption rates of melanin and oxyhemoglobin.
A multi-wavelength laser irradiation device and method that simultaneously or alternately irradiates 1064nm and 755nm lasers, utilizing cold/warm water to regulate temperature and outputs cooling gas for pain relief, with controlled gas flow to manage internal pressure.
Achieves maximum laser output efficiency, effective pain relief, and fine control based on skin characteristics and color by maintaining appropriate temperatures and controlling gas flow, reducing the risk of gas tank explosion.
Smart Images
Figure CN119215338A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a laser irradiation device, and more particularly to a multi-wavelength laser irradiation device and an irradiation method for simultaneously irradiating multi-wavelength lasers. Background Art
[0002] The use of electromagnetic radiation in the visible and infrared spectral regions is becoming a common technique in many areas of industry, medicine and research. For example, this radiation is becoming increasingly important in the field of dermatology. In many cases, laser sources are used to generate the desired radiation level at the required wavelength.
[0003] Many lasers are commonly used in dermatology, such as treating vascular or pigmented lesions, hair removal, and skin peels. The principle of selective photothermolysis is the basis of many laser treatments and can be used to treat a variety of disease states, such as varicose veins, flaming lentigo, other opacifying vascular lesions, and pigmented lesions including tattoos. The dermis and epidermis layers containing the target structure are irradiated with light, usually from a laser or flash lamp. The wavelength of this light is chosen so that its energy is preferentially or selectively absorbed into the structure. This produces localized heating with the goal of raising the temperature to the point where the constituent proteins are denatured or the pigment particles diffuse.
[0004] There is known a skin care device that irradiates a subject's skin with laser light of a plurality of wavelengths to improve the skin condition.
[0005] Examples of lasers used in these skin care devices include lasers with a wavelength of 1064nm and 755nm. Lasers with a wavelength of 1064nm can act on dermal blood vessels and can be used for hair removal and skin regeneration effects regardless of skin color. That is, this laser with a wavelength of 1064nm has a deep skin penetration depth and a high absorption rate for oxyhemoglobin, so it is useful for treating dermal blood vessels. In addition, the absorption rate of melanin by lasers with a wavelength of 1064nm is not high, so subjects with darker skin can also obtain excellent hair removal effects. In addition, lasers with a wavelength of 1064nm not only have a deep penetration depth, but also have a high absorption rate, so they stimulate collagen in the dermis. Therefore, the effects of improving fine lines and skin regeneration are very high.
[0006] The 755nm wavelength laser has an epidermal whitening effect and shows a higher hair removal effect on subjects with lighter skin. That is, the penetration depth of the 755nm wavelength laser is slightly shallower than that of the 1064nm wavelength laser, but the absorption degree of melanin is high, so the hair removal effect is better than that of the 1064nm wavelength laser. However, due to the high absorption degree of melanin, the skin color type is limited. For subjects with dark skin, the skin absorbs the energy first, causing damage to the skin, so it cannot be used for subjects with dark skin. On the other hand, the melanin absorption degree of the 755nm wavelength laser is high, so it has a whitening effect that brightens the skin color.
[0007] When the above-mentioned 1064nm wavelength and 755nm wavelength laser treatment objects are combined, the vascular treatment, hair removal and whitening effects can be improved according to different skin penetration depths and skin colors. Therefore, the recent skin care devices using lasers can irradiate at least two or more wavelengths of lasers simultaneously or alternately.
[0008] At this time, in order to improve the output efficiency of lasers of different wavelengths, it is necessary to finely control the temperature of the laser generating device. In addition, cooling gas is sprayed to reduce the pain during laser irradiation. At this time, in order to normally spray cooling gas, it is necessary to control the internal pressure of the internal cooling gas output structure. Summary of the invention
[0009] 1. Technical issues to be resolved
[0010] In order to solve the above problems, the purpose of the present invention is to provide a multi-wavelength laser irradiation device and irradiation method, which can simultaneously or alternately irradiate 1064nm wavelength laser and 755nm wavelength laser, use cold water / warm water to control the temperature inside the laser resonator to achieve maximum efficiency of laser output, and output cooling gas for relieving pain after outputting the laser. At this time, the pressure in the gas flow channel inside the product is controlled to output the cooling gas.
[0011] (II) Technical solution
[0012] In order to achieve the above-mentioned purpose, the present invention provides a multi-wavelength laser irradiation device and an irradiation method. The multi-wavelength laser irradiation device may include: a main body, which is controlled and operated as a whole; a handpiece, which is operated according to the control of the main body and is connected to the main body by wire; and a tip, which can be combined with one side of the handpiece. The main body may include: a first power supply unit, which enables the main body to be operated as a whole; a display unit, which receives power from the first power supply unit to operate and provides a surgery detail screen and a surgery detail setting control screen to a user and an operator; a control unit, which receives power from the first power supply unit to operate and controls the overall operation according to the surgery detail setting value of the display unit; a laser generating unit, which receives power from the first power supply unit and operates according to the control of the control unit to generate laser; a temperature regulating unit, which receives power from the first power supply unit to operate and keeps the laser generating unit at an appropriate temperature when the laser generating unit generates laser to improve the laser output efficiency; and a cooling unit, which receives power from the first power supply unit to operate and sprays cooling gas to the user's skin. The laser generating unit may be composed of a first laser generator and a second laser generator that output lasers of different wavelengths. The temperature regulating unit may include a first temperature regulating unit that controls the temperature of the first laser generator and a second temperature regulating unit that controls the temperature of the second laser generator.
[0013] The first laser generator can generate laser light with a wavelength of 720 nm to 780 nm, and the second laser generator can generate laser light with a wavelength of 955 nm to 1100 nm.
[0014] Each of the first laser generator and the second laser generator may further include: a plurality of lamps; a gain medium absorbing light generated by the lamps; and a reflecting portion consisting of a pair of mirrors structured to face each other at both horizontal ends of the gain medium to resonate the light and the gain medium.
[0015] The reflectivity of one mirror surface of the first laser generator may be at least 97%, and the reflectivity of the other mirror surface may be 78% to 83%.
[0016] The reflectivity of one mirror surface of the second laser generator may be at least 97%, and the reflectivity of the other mirror surface may be 38% to 43%.
[0017] The reflecting portion may be replaced by coating both ends of the gain medium to have the same reflectivity as the reflectivity.
[0018] The first temperature regulating part may include: a first cooling water chamber, which circulates through a tube inside the first laser generator to keep the temperature of the lamp and the gain medium of the first laser generator at an appropriate temperature; a first heating part, which increases the temperature of the first cooling water chamber; and a first cooling fan, which lowers the temperature of the first cooling water chamber. The second temperature regulating part may further include: a second cooling water chamber, which circulates through a tube inside the second laser generator to keep the temperature of the lamp and the gain medium of the second laser generator at an appropriate temperature; a second heating part, which increases the temperature of the second cooling water chamber; and a second cooling fan, which lowers the temperature of the second cooling water chamber.
[0019] The cooling unit may further include: a gas tank cover, which is attached to the inside of the main body and the gas tank is inserted into the gas tank cover; a first hose, which is coupled to the lower end of the gas tank cover and serves as a flow channel for the gas of the gas tank to flow; a first pressure sensor, which is coupled to the lower part of the gas tank cover and is operated by the power of the first power supply unit to check whether the gas tank is inserted into the gas tank cover; a chamber, which is coupled to one side of the first hose and stores the cooling gas; a first opening and closing valve, which controls the gas output at the central part outside the two ends of the first hose between the gas tank cover and the chamber, and is operated by the power of the first power supply unit and the control of the control unit; a first level sensor, which is coupled to one side of the upper end of the chamber to sense whether there is gas body, and is operated by the power of the first power supply unit and the control of the control unit; a second level sensor, which is coupled to one side of the lower end of the chamber, senses whether there is gas, and is operated by the power of the first power supply unit and the control of the control unit; an exhaust port, which is coupled to one side of the chamber, discharges the gas inside the chamber to the outside; a second on-off valve, which opens and closes the exhaust port to discharge the gas inside the chamber to the outside, and is operated by the power of the first power supply unit and the control of the control unit; a second pressure sensor, which is coupled to the lower end of the center of the chamber, and senses whether there is gas inside the chamber; and a second hose, which connects the chamber and the handpiece and serves as a flow path for cooling gas.
[0020] The hand piece may further include a correction lens which is provided at one side end of the hand piece and corrects the divergent laser beam to be parallel.
[0021] The tip may further include a lens portion for outputting laser light at a preset laser output spot size when outputting laser light generated by the main body.
[0022] The lens portion of the tip may include at least one and no more than five lenses, one side of the lens being composed of a concave lens and the other side being composed of a convex lens, both sides being concave lenses, or both sides being convex lenses, and the lenses are combined according to the size of the laser irradiation beam.
[0023] The multi-wavelength laser irradiation method may include the following steps: a first power supply unit of a main body starts power and transmits power to a second power supply unit of a handpiece; judging whether a laser output signal is input from a controller of the handpiece; in the step of judging whether a laser output signal is input from the controller of the handpiece, when judging that a laser output signal is input, a laser generating unit operates to generate laser light according to the control of a display unit and a control unit; the laser generating unit operates according to the control of the display unit and the control unit, a first laser generator generates laser light with a wavelength of 720 nm to 780 nm, and a second laser generator generates laser light with a wavelength of 955 nm to 1100 nm; when the first laser generator and the second laser generator generate laser light, a temperature regulating unit performs an operation for maintaining temperature so that the laser generators maintain an appropriate temperature; laser light generated by the laser generating unit is transmitted to the handpiece through an optical fiber and the transmitted laser light is irradiated toward a patient through a tip; cooling gas in a cooling unit of the main body is ejected through a nozzle of the handpiece; judging whether a laser output signal is input from a controller of the handpiece; and in the step of judging whether a laser output signal is input from the controller of the handpiece, when judging that a laser output signal is input, the laser generating unit operates to generate laser light according to the control of the display unit and the control unit.
[0024] In the step of the temperature adjusting part performing an operation for maintaining temperature to maintain the laser generator at an appropriate temperature, the temperature adjusting part may include a first temperature adjusting part controlling the temperature of the first laser generator and a second temperature adjusting part controlling the temperature of the second laser generator.
[0025] The first temperature adjustment unit may maintain the temperature of the first laser generator at 50°C to 65°C, and the second temperature adjustment unit may maintain the temperature of the second laser generator at 20°C to 35°C.
[0026] The step of transmitting the laser light generated by the laser generating part to the handpiece through the optical fiber and irradiating the transmitted laser light to the patient through the tip may further include the step of the handpiece making the dispersed laser beam parallel through the correction lens before transmitting the laser light to the tip.
[0027] The step of spraying the cooling gas in the cooling part of the main body through the nozzle of the handpiece may further include the following steps: combining the gas tank to the gas tank cover of the cooling part of the main body; when the gas tank is combined and the first pressure sensor senses the gas tank combination, opening the first opening and closing valve, the gas fills the first level sensor of the chamber, and when the first level sensor senses the sensing value, closing the first opening and closing valve; the control part of the main body determines whether the laser is irradiated to the patient; and in the step of determining whether the laser is irradiated to the patient, when it is determined that the laser is irradiated, opening the third opening and closing valve of the handpiece and spraying the gas to the patient through the nozzle.
[0028] The step of opening the third on-off valve of the handpiece and spraying gas to the patient through the nozzle may further include the following steps: judging whether the values of the first pressure sensor and the second pressure sensor have changed; in the step of judging whether the values of the first pressure sensor and the second pressure sensor have changed, when it is judged that there is no change, it is judged that the gas inside the gas tank is completely exhausted; and opening the second on-off valve of the chamber and opening the exhaust port to match the air pressure inside the chamber with the external air pressure.
[0029] In the step in which the laser generated by the laser generating unit is transmitted to the handpiece through the optical fiber and the transmitted laser is irradiated to the patient through the tip, the laser irradiated to the patient can simultaneously irradiate the laser with a wavelength of 720nm to 780nm generated by the first laser generator and the laser with a wavelength of 955nm to 1100nm generated by the second laser generator.
[0030] The laser irradiated to the patient may be laser light with a wavelength of 720 nm to 780 nm generated by the first laser generator and laser light with a wavelength of 955 nm to 1100 nm generated by the second laser generator simultaneously or with a time difference of 200 ms.
[0031] (III) Beneficial effects
[0032] According to these features, the present invention can output laser light with maximum efficiency by maintaining an appropriate temperature inside the laser generator.
[0033] In addition, cooling gas is output after laser irradiation to relieve pain. At this time, the pressure of the gas flow channel inside the main body is controlled to output cooling gas, so that the output of cooling gas can be smooth, and the pressure of the internal gas flow channel is controlled to reduce the risk of gas tank explosion.
[0034] In addition, the 755nm wavelength laser and the 1064nm wavelength laser can be irradiated simultaneously, or the laser can be irradiated with a time difference of up to 200ms, so fine control can be performed according to skin characteristics and skin color. BRIEF DESCRIPTION OF THE DRAWINGS
[0035] Figure 1 is a configuration diagram of a multi-wavelength laser irradiation device according to an embodiment of the present invention.
[0036] Figure 2 1 is a diagram showing the configuration of a temperature adjustment unit in a multi-wavelength laser irradiation device according to an embodiment of the present invention.
[0037] Figure 3 1 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.
[0038] Figure 4Schematic diagram showing a cooling portion and a cooling channel in a multi-wavelength laser irradiation device according to an embodiment of the present invention.
[0039] Figure 5 is a flow chart of a multi-wavelength laser irradiation method according to an embodiment of the present invention.
[0040] Figure 6 is a flow chart of a cooling gas output method in a multi-wavelength laser irradiation method according to an embodiment of the present invention.
[0041] Figure 7 is a flow chart of a method for controlling the internal pressure of a subject in a multi-wavelength laser irradiation method according to an embodiment of the present invention.
[0042] Description of Reference Numerals
[0043] 10: Main body 11: First power supply unit
[0044] 12: Display unit 13: Control unit
[0045] 14: Laser generating unit 15: Temperature regulating unit
[0046] 18: Cooling unit 20: Hand piece
[0047] 21: Housing 22: Second power supply unit
[0048] 23: The third on-off valve 24: Nozzle
[0049] 25: Controller 26: Correction lens
[0050] 30: Tip 31: Shell
[0051] 32: Disassembly member 33: Lens part
[0052] 34: Support DETAILED DESCRIPTION
[0053] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. However, the present invention can be implemented in various forms and is not limited to the embodiments described in this specification. In order to clearly describe the present invention, parts not related to the description are omitted, and similar reference numerals are used for similar parts throughout the specification.
[0054] Throughout the specification, when a part is described as being "connected (coupled, in contact with, combined)" with another part, it includes not only the case of "direct connection" but also the case of "indirect connection" with other parts in between. In addition, when a part is described as "including" a component, unless there is a special description to the contrary, it means that other components may also be included, and other components are not excluded.
[0055] The terms used in this specification are only used to illustrate specific embodiments and are not intended to limit the present invention. Unless the context clearly indicates a different meaning, a singular expression includes a plural expression. It should be understood that in this specification, terms such as "including" or "having" are used to specify the presence of features, numbers, steps, operations, components, parts or combinations thereof recorded in the specification, rather than excluding the presence or additional possibility of one or more other features, numbers, steps, operations, components, parts or combinations thereof in advance.
[0056] Hereinafter, a multi-wavelength laser irradiation device and an irradiation method according to an embodiment of the present invention will be described with reference to the accompanying drawings.
[0057] Figure 1 is a configuration diagram of a multi-wavelength laser irradiation device according to an embodiment of the present invention, Figure 2 is a configuration diagram of a temperature adjustment unit in a multi-wavelength laser irradiation device according to an embodiment of the present invention, Figure 3 1 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.
[0058] Reference Figures 1 to 3 The multi-wavelength laser irradiation device includes: a main body 10, which performs overall control and operation; a handpiece 20, which operates according to the control of the main body 10 and is wired to the main body 10; and a tip 30, which can be combined with one side of the handpiece 20.
[0059] The main body 10 includes: a first power supply unit 11, which enables the main body 10 to be operated as a whole; a display unit 12, which receives power from the first power supply unit 111 to operate and provides a surgery detail screen and a surgery detail setting control screen to the user and the operator; a control unit 13, which receives power from the first power supply unit 11 to operate and controls the overall operation according to the surgery detail setting value of the display unit 12; a laser generating unit 14, which receives power from the first power supply unit 11 and operates according to the control of the control unit 13 to generate laser; a temperature regulating unit 15, which receives power from the first power supply unit 11 to operate and keeps the laser generating unit 14 at an appropriate temperature when the laser generating unit 14 generates laser to improve the laser output efficiency; and a cooling unit 18, which receives power from the first power supply unit 11 to operate and sprays cooling gas onto the user's skin
[0060] The main body 10 is connected to the hand piece 20 by wire. In the present invention, the laser light generated by the laser generating unit 14 of the main body 10 is preferably transmitted to the hand piece 20 via an optical fiber.
[0061] The display unit 12 provides a user interface (UI) for detailed settings, and the user can adjust the laser output detailed settings in the display unit 12. In addition, the laser output and stop are controlled in the display unit 12, and errors occurring in the operation of the device are displayed to the operator and the user through the display unit 12.
[0062] When sensing the laser output, stop, detailed settings, etc. in the display section 12, the control section 13 controls the overall operation of the main body and the handpiece.
[0063] The laser generating unit 14 is composed of a first laser generator 14-1 and a second laser generator 14-2 which output lasers of different wavelengths. In one embodiment of the present invention, preferably, the first laser generator 14-1 outputs lasers of 755nm wavelength and the second laser generator 14-2 outputs lasers of 1064nm wavelength, but the present invention is not limited thereto.
[0064] The first laser generator 14-1 and the second laser generator 14-2 each include: a plurality of lamps; a gain medium that absorbs light generated by the lamps; and a reflector consisting of a pair of mirrors in a structure facing each other at both horizontal ends of the gain medium so that the light and the gain medium resonate. At this time, the gain medium of the first laser generator is neodymium-doped yttrium aluminum garnet (Nd:YAG), and the gain medium of the second laser generator is Alexandrite.
[0065] The reflectivity of the reflecting parts is different, the reflectivity of one mirror surface of the first laser generator is at least 97%, and the reflectivity of the other mirror surface is 78% to 83%. The reflectivity of one mirror surface of the second laser generator is at least 97%, and the reflectivity of the other mirror surface is 38% to 43%.
[0066] At this time, the reflecting portion may be replaced by coating both ends of the gain medium to have the same reflectivity as the above-mentioned reflectivity.
[0067] The temperature adjustment unit 15 includes a first temperature adjustment unit 16 for controlling the temperature of the first laser generator and a second temperature adjustment unit 17 for controlling the temperature of the second laser generator.
[0068] The first temperature regulating part 16 includes: a first cooling water chamber 16-1, which circulates through a tube inside the first laser generator to keep the temperature of the lamp and the gain medium of the first laser generator at an appropriate temperature; a first heating part 16-2, which increases the temperature of the first cooling water chamber 16-1; and a first cooling fan 16-3, which reduces the temperature of the first cooling water chamber 16-1.
[0069] The second temperature regulating part 17 includes: a second cooling water chamber 17-1, which circulates through a tube inside the second laser generator to keep the temperature of the lamp and the gain medium of the second laser generator at an appropriate temperature; a second heating part 17-2, which increases the temperature of the second cooling water chamber 17-1; and a second cooling fan 17-3, which reduces the temperature of the second cooling water chamber 17-1.
[0070] The cooling unit 18 includes: a gas tank cover 18-1, which is attached to the inside of the main body and the gas tank is inserted into the gas tank cover; a first hose (not shown), which is coupled to the lower end of the gas tank cover 18-1 and serves as a flow channel for the gas flow of the gas tank; a first pressure sensor 18-2, which is coupled to the lower part of the gas tank cover 18-1 and is operated by the power of the first power supply unit 11 to check whether the gas tank is inserted into the gas tank cover 18-1; a chamber 18-4, which is coupled to one side of the first hose and stores the cooling gas; a first opening and closing valve 18-3, which controls the gas output at the central part outside the two ends of the first hose between the gas tank cover 18-1 and the chamber 18-4, and is operated by the power of the first power supply unit 11 and the control of the control unit 13; a first level sensor 18-5, which is coupled to one side of the upper end of the chamber 18-4, senses whether there is gas, and is operated by the first The power of the power supply unit 11 and the control of the control unit 13 operate; the second level sensor 18-6 is coupled to the lower end side of the chamber 18-4 to sense whether there is gas, and is operated by the power of the first power supply unit 11 and the control of the control unit 13; the exhaust port 18-8 is coupled to one side of the chamber 18-4 to discharge the gas inside the chamber 18-4 to the outside; the second on-off valve 18-7 opens and closes the exhaust port 18-8 to discharge the gas inside the chamber 18-4 to the outside, and is operated by the power of the first power supply unit 11 and the control of the control unit 13; the second pressure sensor 18-9 is coupled to the lower central end of the chamber 18-4 to sense whether there is gas inside the chamber 18-4; and a second hose (not shown) connects the chamber 18-4 and the handpiece 20 and serves as a flow channel for cooling gas.
[0071] When the cooling gas is sprayed through the cooling unit 18, the gas tank is first coupled to the gas tank cover 18-1, and then when the first pressure sensor 18-2 senses that the gas tank is coupled, the control unit 13 controls to open the first opening and closing valve 18-3 to output the gas of the gas tank.
[0072] When the gas is output from the gas tank, the gas is filled into the chamber 18-4 through the first hose, and when the second level sensor 18-6 and the first level sensor 18-5 of the chamber both sense the sensing value, the first opening and closing valve 18-3 is closed to stop the gas output of the gas tank. At this time, it is determined that the gas is filled to the first level sensor 18-5.
[0073] When the laser is irradiated and cooling gas is output, the gas filled in the chamber 18-4 is ejected through the nozzle 24 of the handpiece 20 via the second hose. When this process is repeated, the first level sensor 18-5 of the chamber 18-4 first senses no sensing value, but closes the first opening and closing valve 18-3 until the second level sensor 18-6 senses no sensing value.
[0074] When the second level sensor 18-6 cannot sense the sensing value, it is determined that there is no gas inside the chamber 18-4, and the first on-off valve 18-3 is opened to refill the cooling gas in the gas tank into the chamber 18-4 until the first level sensor 18-5 senses the sensing value.
[0075] At this time, when the sensing value of the first pressure sensor 18-2 and the sensing value of the second pressure sensor 18-9 do not change, it is determined that the gas inside the gas tank is completely exhausted and a gas tank replacement notification is output through the display unit 12. The sensing value of the first pressure sensor 18-2 is the weight of the sensing gas tank and the weight of the gas inside the gas tank. Therefore, if the sensing value does not change, it is determined that the cooling gas inside the gas tank is completely exhausted. However, even if it is determined that the sensing value of the first pressure sensor 18-2 does not change, if the sensing value of the second pressure sensor 18-9 changes, there is residual gas inside the chamber 18-4. Therefore, if the gas tank replacement notification is output through the display unit 12 because the sensing value of the first pressure sensor 18-2 does not change, even if there is residual gas, the operation must be stopped. Therefore, only when it is determined that the sensing values of both the first pressure sensor 18-2 and the first pressure sensor 18-9 do not change, the gas tank replacement notification is output through the display unit 12.
[0076] When the sensing values sensed by the first pressure sensor 18-2 and the second pressure sensor 18-9 do not change, a gas tank replacement notification is output through the display unit 12, and internal heat is generated due to the operation of the structure of the main body 10, and the pressure of the cooling unit 18 increases, so the second opening and closing valve 18-7 is opened to discharge the internal pressure of the chamber 18-4 to the outside through the discharge port 18-8. The internal pressure of the chamber 18-4 is discharged through the discharge port 18-8, thereby reducing the pressure of the cooling unit 18. Then a new gas tank is coupled to the gas tank cap 18-1 to fill the gas until the first level sensor 18-5 senses the sensing value.
[0077] In addition, the control unit 13 of the main body 10 controls the third opening and closing valve 23 of the handpiece 20 to output the cooling gas through the nozzle 24 according to the preset output amount of the cooling gas.
[0078] The handpiece 20 includes a shell 21, which is used to protect internal components from external impacts. The shell 21 includes: a second power supply unit 22, which is wired to the first power supply unit 11 of the main body 10 to receive power; a third opening and closing valve 23, which receives power from the second power supply unit 22 to operate, and is opened and closed according to the control of the control unit 13 in order to output the cooling gas output from the cooling unit 18 of the main body 10; a nozzle 24, which sprays cooling gas according to whether the third opening and closing valve 23 is opened and closed; a controller 25, which is arranged on one side of the shell 21 of the handpiece 20, and can control the detailed setting values of the operation and whether to operate as a whole; and a correction lens 26, which is arranged at the end of one side of the handpiece 30, and corrects the laser to make it parallel when the laser beam output through the optical fiber is dispersed.
[0079] The controller 25 is a touch type or a button type.
[0080] The tip 30 includes a shell 31, which is used to protect internal components from external impacts. The tip 30 includes: a disassembly member 32, which is arranged on one side of the shell 31 so that the tip 30 is detachable from the handpiece 20; a lens portion 33, which is formed inside the shell 31 and is used to output laser light with a preset laser output spot size when the laser light generated by the output body 10; and a support portion 34, which is combined to one side of the shell 31 to constantly maintain the operator's skin and the laser irradiation length.
[0081] The lens portion 33 of the tip 30 includes at least one and no more than five lenses. One side of the lens can be composed of a concave lens and the other side can be composed of a convex lens, or both sides can be concave lenses or both sides can be convex lenses. The lenses can be combined according to the size of the laser irradiation beam.
[0082] As an embodiment, when the size of the output light beam is 20 mm, the dispersed laser beam is made parallel by the correction lens 26 of the handpiece 20, and the size of the light beam is adjusted by the lens combination of the lens portion 33 of the tip 30. At this time, two lenses are combined, one of which has a convex surface on one side and a concave surface on the other side, and the other lens has concave surfaces on both sides.
[0083] 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.
[0084] Figure 5 is a flow chart of a multi-wavelength laser irradiation method according to an embodiment of the present invention, Figure 6 is a flow chart of a cooling gas output method in a multi-wavelength laser irradiation method according to an embodiment of the present invention, Figure 7 is a flow chart of a method for controlling the internal pressure of a subject in a multi-wavelength laser irradiation method according to an embodiment of the present invention.
[0085] Reference Figures 5 to 7 First, the first power supply unit 11 of the main body 10 starts power and transmits power to the second power supply unit 21 of the handpiece 20 (S10).
[0086] It is determined whether a laser output signal is input from the controller 25 of the hand piece 20 ( S11 ). At this time, the output control may be performed not only by the controller 25 of the hand piece 20 but also by a foot switch or the display unit 12 .
[0087] In the step of determining whether a laser output signal is input from the controller 25 of the handpiece 20 ( S11 ), when it is determined that a laser output signal is input, the laser generating unit 14 operates to generate laser light according to the control of the display unit 12 and the control unit 13 ( S12 ).
[0088] In the step of determining whether a laser output signal is input from the controller 25 of the handheld device 20 (S11), when no laser output signal is input, the first power supply unit 11 of the main body 10 starts the power supply and transfers the power to the second power supply unit 21 of the handheld device 20, and waits (S13).
[0089] The laser generating unit 14 operates according to the control of the display unit 12 and the control unit 13, and the first laser generator 14-1 generates a laser with a wavelength of 720nm to 780nm, and the second laser generator 14-2 generates a laser with a wavelength of 955nm to 1100nm (S14). At this time, in the present invention, the laser generated by the first laser generator 14-1 is preferably a laser with a wavelength of 755nm, and the laser generated by the second laser generator 14-2 is preferably a laser with a wavelength of 1064nm, but the present invention is not limited thereto.
[0090] When the first laser generator 14-1 and the second laser generator 14-2 generate lasers, the temperature adjustment unit 15 performs an operation for maintaining the temperature so that the laser generators maintain an appropriate temperature (S15). At this time, the temperature adjustment unit 15 includes a first temperature adjustment unit 16 for controlling the temperature of the first laser generator 14-1 and a second temperature adjustment unit 17 for controlling the temperature of the second laser generator 14-2.
[0091] The first temperature adjustment unit 16 maintains the temperature of the first laser generator 14-1 at 50° C. to 65° C., and the second temperature adjustment 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 the present invention is not limited thereto.
[0092] When the first laser generator 14-1 and the second laser generator 14-2 generate lasers, internal heat is generated. In order to sense this, the first laser generator 14-1 and the second laser generator 14-2 each include a temperature sensor (not shown). The first laser generator 14-1 and the second laser generator 14-2 are cooled and heated in a manner that cooling water flows inside each laser generator. To this end, the first temperature regulating part 16 heats the first cooling water chamber 16-1 using the first heating part 16-2 to increase the cooling water temperature so as to keep the temperature of the first laser generator 14-1 at an appropriate temperature of 50°C, and when the temperature sensor senses that the temperature of the first laser generator 14-1 exceeds 50°C, the first cooling water chamber 16-1 is cooled using the first cooling fan 16-3 to reduce the cooling water temperature.
[0093] The second temperature regulating unit 17 uses the second cooling fan 17-3 to cool the second cooling water chamber 17-1 to lower the cooling water temperature so as to maintain the temperature of the second laser generator 14-2 at an appropriate temperature of 29°C, and when the temperature sensor senses that the temperature of the second laser generator 17-1 is lower than 29°C, the second heating unit 17-2 is used to heat the second cooling water chamber 17-1 to increase the cooling water temperature.
[0094] After the temperature control unit 15 performs a step (S15) for maintaining the temperature so that the laser generators maintain an appropriate temperature when the first laser generator 14-1 and the second laser generator 14-2 generate lasers, the laser generated by the laser generating unit 14 is transmitted to the handpiece 20 through the optical fiber and the transmitted laser is irradiated toward the patient through the tip 30 (S16).
[0095] At this time, the laser irradiated to the patient simultaneously irradiates the laser with a wavelength of 720nm to 780nm generated by the first laser generator 14-1 and the laser with a wavelength of 955nm to 1100nm generated by the second laser generator 14-2. In the present invention, the laser generated by the first laser generator 14-1 is preferably a laser with a wavelength of 755nm, and the laser generated by the second laser generator 14-2 is preferably a laser with a wavelength of 1064nm, but the present invention is not limited thereto.
[0096] The laser irradiated to the patient may irradiate the laser with a wavelength of 720nm to 780nm generated by the first laser generator 14-1 and the laser with a wavelength of 955nm to 1100nm generated by the second laser generator 14-2 simultaneously or with a time difference of 200ms, but the present invention is not limited thereto.
[0097] At this time, the handpiece 20 makes the dispersed laser beam parallel through the correction lens 26 before delivering the laser to the tip 30 .
[0098] After the step of irradiating the laser to the patient through the tip 30 ( S16 ), the cooling gas in the cooling portion 18 of the body 10 is ejected through the nozzle 24 of the handpiece 20 ( S17 ).
[0099] After the step of ejecting the cooling gas through the nozzle 24 of the hand piece 20 ( S17 ), it is determined whether a laser output signal is input from the controller 25 of the hand piece 20 ( S18 ).
[0100] In the step (S18) of determining whether a laser output signal is input from the controller 25 of the handheld device 20, when it is determined that a laser output signal is input, the process returns (S19) to the step (S12) in which the laser generating unit 14 operates according to the control of the display unit 12 and the control unit 13 to generate laser.
[0101] In the step (S18) of determining whether a laser output signal is input from the controller 25 of the handpiece 20, when the laser output signal is not input, the laser output is terminated. At this time, the power of the device is not completely turned off, but waits in the step (S10) of starting the power of 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.
[0102] In the step (S17) of spraying the cooling gas in the cooling part 18 of the body 10 through the nozzle 24 of the handpiece 20, first, the gas tank is coupled to the gas tank cover 18-1 of the cooling part 18 of the body 10 (S20).
[0103] When the gas tank is connected (S20) and the first pressure sensor 18-2 senses the connection of the gas tank, the first opening and closing valve 18-3 is opened, and the gas is filled into the first level sensor 18-5 of the chamber 18-4, and when the first level sensor 18-5 senses the sensing value, the first opening and closing valve 18-3 is closed (S21). At this time, the gas is filled into the first level sensor 18-5 from the second hose connected to the third opening and closing valve 23 of the handpiece 20.
[0104] Next, the control unit 13 of the main body 10 determines whether the patient is irradiated with laser light ( S22 ).
[0105] In the step of determining whether the patient is irradiated with laser light ( S22 ), when it is determined that the patient is irradiated with laser light, the third on-off valve 23 of the handpiece 20 is opened and the gas is sprayed toward the patient through the nozzle 24 ( S23 ).
[0106] Therefore, the heat generated when the laser is irradiated to the patient's skin can be cooled by the cooling gas to prevent burns and relieve pain.
[0107] After the step (S23) of opening the third on-off valve 23 of the handpiece 20 and spraying gas to the patient through the nozzle 24, it is determined whether the values of the first pressure sensor 18-2 and the second pressure sensor 18-9 have changed (S30).
[0108] In the step (S30) of determining whether the values of the first pressure sensor 18-2 and the second pressure sensor 18-9 have changed, when it is determined that there is no change, it is determined that the gas inside the gas tank is completely exhausted (S31), and the second on-off valve 18-7 of the chamber 18-4 is opened and the exhaust port 18-8 is opened to match the air pressure inside the chamber with the external air pressure (S32).
[0109] After the step ( S23 ) of opening the third on-off valve 23 of the handpiece 20 and spraying gas to the patient through the nozzle 24 , it is determined whether the value of the first pressure sensor 18 - 2 decreases ( S40 ).
[0110] In the step of determining whether the value of the first pressure sensor 18-2 decreases (S40), when it is determined that the value of the first pressure sensor 18-2 decreases, the heating wire of the gas tank cover 18-1 is turned on to increase the pressure inside the gas tank (S41).
[0111] After the step ( S23 ) of opening the third opening and closing valve 23 of the handpiece 20 and spraying gas to the patient through the nozzle 24 , it is determined whether the second level sensor 18 - 6 has a sensing value ( S50 ).
[0112] In the step of determining whether the second level sensor 18-6 has a sensing value (S50), when it is determined that the second level sensor 18-6 has a sensing value, the first opening and closing valve 18-3 is opened to fill the gas until the first level sensor 18-5 senses the sensing value (S51).
[0113] The step of determining whether the values of the first pressure sensor 18-2 and the second pressure sensor 18-9 have changed (S30), the step of determining whether the value of the first pressure sensor 18-2 has decreased (S40), and the step of determining whether a sensing value exists in the second level sensor 18-6 (S50) are continued after the step (S10) of starting the power supply of the first power supply unit 11 of the main body 10 and transferring power to the second power supply unit 21 of the handheld piece 20.
[0114] Therefore, the pressure inside the main body 10 can be prevented from being higher than the pressure outside, thereby preventing the gas cylinder from exploding or gas injection errors. In addition, the cooling gas can be continuously filled into the cooling portion, thereby preventing inconveniences such as interruption of surgery in advance.
[0115] Although the embodiments of the present invention are described in detail above, the scope of the present invention is not limited thereto, and various changes and improvements made by those skilled in the art using the basic concepts of the present invention defined in the claims also fall within the scope of the present invention.
Claims
1. A multi-wavelength laser irradiation device, characterized in that: include: The main body performs overall control and operation; A hand piece, which is operated according to the control of the main body and is connected to the main body by wire; as well as The tip can be attached to the side of the handpiece. The subject includes: a first power supply unit, which enables the main body to operate as a whole; a display unit that receives power from the first power supply unit to operate and provides a surgery detail screen and a surgery detail setting control screen to a user and a surgeon; a control unit that receives power from the first power supply unit to operate and controls the overall operation according to the detailed operation setting value of the display unit; a laser generating unit, receiving power from the first power supply unit and operating according to the control of the control unit to generate laser light; a temperature adjustment unit that receives power from the first power supply unit to operate and maintains the laser generating unit at an appropriate temperature when the laser generating unit generates laser light to improve laser output efficiency; and The cooling unit receives power from the first power supply unit to operate and sprays cooling gas toward the user's skin. The laser generating unit is composed of a first laser generator and a second laser generator which output lasers of different wavelengths. The temperature adjustment unit includes a first temperature adjustment unit that controls the temperature of the first laser generator and a second temperature adjustment unit that controls the temperature of the second laser generator.
2. The multi-wavelength laser irradiation device according to claim 1, characterized in that: The first laser generator generates laser light with a wavelength of 720 nm to 780 nm, and the second laser generator generates laser light with a wavelength of 955 nm to 1100 nm.
3. The multi-wavelength laser irradiation device according to claim 1, characterized in that: The first laser generator and the second laser generator each further include: Multiple lights; a gain medium, which absorbs the light generated by the lamp; and The reflection part is composed of a pair of mirror surfaces in a structure facing each other at both horizontal ends of the gain medium so as to resonate the light with the gain medium.
4. The multi-wavelength laser irradiation device according to claim 3, characterized in that: The reflectivity of one mirror surface of the first laser generator is at least 97%, and the reflectivity of the other mirror surface is 78% to 83%.
5. The multi-wavelength laser irradiation device according to claim 3, characterized in that: The reflectivity of one mirror surface of the second laser generator is at least 97%, and the reflectivity of the other mirror surface is 38% to 43%.
6. The multi-wavelength laser irradiation device according to claim 4 or 5, characterized in that: The reflecting portion is replaced by coating both ends of the gain medium to have the same reflectivity as the reflectivity.
7. The multi-wavelength laser irradiation device according to claim 1, characterized in that: The first temperature adjustment unit includes: a first cooling water chamber, circulated through the 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 The first cooling fan lowers the temperature of the first cooling water chamber, The second temperature adjustment unit further comprises: a second cooling water chamber, circulated through the 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 The second cooling fan reduces the temperature of the second cooling water chamber.
8. The multi-wavelength laser irradiation device according to claim 1, characterized in that: The cooling unit further comprises: a gas tank cover attached to the inside of the main body and into which the gas tank is inserted; a first hose coupled to the lower end of the gas tank cover and serving as a flow path for the gas of the gas tank to flow; a first pressure sensor coupled to the lower portion of the gas tank cover and operated by power from the first power supply unit to check whether the gas tank is inserted into the gas tank cover; a chamber, coupled to one side of the first hose and storing cooling gas; A first opening and closing valve controls gas output at a central portion of the first hose located between the gas tank cover and the chamber, other than both ends, and is operated by power from the first power supply unit and control from the control unit; a first level sensor coupled to one side of an upper end of the chamber, sensing the presence of gas, and operating by power from the first power supply unit and control from the control unit; a second level sensor coupled to a lower end side of the chamber, sensing the presence of gas, and operating by power from the first power supply unit and control from the control unit; An exhaust port is coupled to a side of the chamber to exhaust the gas inside the chamber to the outside; a second opening and closing valve that opens and closes the exhaust port to exhaust the gas inside the chamber to the outside and is operated by the power of the first power supply unit and the control of the control unit; a second pressure sensor coupled to the lower central end of the chamber interior and sensing whether there is gas inside the chamber; and A second hose connects the chamber and the handpiece and serves as a flow path for cooling gas.
9. The multi-wavelength laser irradiation device according to claim 1, characterized in that: The handpiece further includes a correction lens, which is disposed at one end of the handpiece and corrects the dispersed laser beam to make it parallel.
10. The multi-wavelength laser irradiation device according to claim 1, characterized in that: The tip further includes a lens portion for outputting laser light with a preset laser output spot size when outputting laser light generated by the main body.
11. The multi-wavelength laser irradiation device according to claim 10, characterized in that: The lens portion of the tip includes at least one and no more than five lenses, one side of the lens is composed of a concave lens and the other side is composed of a convex lens, or both sides are concave lenses or both sides are convex lenses, and the lenses are combined according to the size of the laser irradiation beam.
12. A multi-wavelength laser irradiation method, characterized in that: The following steps are involved: The first power supply section of the main body activates the power supply and transmits the power to the second power supply section 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 hand piece, when it is determined that the laser output signal is input, the laser generating unit operates to generate laser light according to the control of the display unit and the control unit; The laser generating unit operates according to the control of the display unit and the control unit, the first laser generator generates laser light with a wavelength of 720nm to 780nm, and the second laser generator generates laser light with a wavelength of 955nm to 1100nm; When the first laser generator and the second laser generator generate laser light, the temperature adjustment section performs an operation for maintaining temperature so as to maintain the laser generator at an appropriate temperature; The laser light generated by the laser generating section is transmitted to the handpiece through the optical fiber and the transmitted laser light is irradiated toward the patient through the tip; The cooling gas in the cooling portion of the main body is ejected through the nozzle of the handpiece; determining whether a laser output signal is input from a controller of the handpiece; as well as In the step of determining whether the laser output signal is input from the controller of the hand piece, when it is determined that the laser output signal is input, the laser generating unit operates to generate laser light according to the control of the display unit and the control unit.
13. The multi-wavelength laser irradiation method according to claim 12, characterized in that: In the step of the temperature adjusting part performing an operation for maintaining temperature so as to maintain the laser generator at an appropriate temperature, the temperature adjusting part includes a first temperature adjusting part controlling the temperature of the first laser generator and a second temperature adjusting part controlling the temperature of the second laser generator.
14. The multi-wavelength laser irradiation method according to claim 13, characterized in that: The first temperature adjustment unit maintains the temperature of the first laser generator at 50°C to 65°C, and the second temperature adjustment unit maintains the temperature of the second laser generator at 20°C to 35°C.
15. The multi-laser irradiation method according to claim 12, characterized in that: The step of transmitting the laser light generated by the laser generating part to the handpiece through the optical fiber and irradiating the transmitted laser light to the patient through the tip further includes the step of the handpiece making the dispersed laser beam parallel through the correction lens before transmitting the laser light to the tip.
16. The multi-laser irradiation method according to claim 12, characterized in that: The step of injecting cooling gas in the cooling portion of the main body through the nozzle of the handpiece further includes the following steps: a gas tank cover coupling the gas tank to the cooling portion of the main body; When the gas tank is combined and the first pressure sensor senses that the gas tank is combined, the first opening and closing valve is opened, the gas is filled into the first level sensor of the chamber, and when the first level sensor senses a sensing value, the first opening and closing valve is closed; The control unit of the main body determines whether the laser light is irradiated to the patient; and In the step of determining whether the laser is irradiated to the patient, when it is determined that the laser is irradiated, the third on-off valve of the handpiece is opened and the gas is sprayed to the patient through the nozzle.
17. The multi-laser irradiation method according to claim 16, characterized in that: The step of opening the third on-off valve of the handpiece and spraying gas to the patient through the nozzle further includes the following steps: Determine whether the values of the first pressure sensor and the second pressure sensor change; In the step of determining whether the values of the first pressure sensor and the second pressure sensor have changed, when it is determined that there is no change, it is determined that the gas inside the gas tank is completely exhausted; and The second on-off valve of the chamber is opened and the exhaust port is opened to match the air pressure inside the chamber with the external air pressure.
18. The multi-wavelength laser irradiation method according to claim 12, characterized in that: In the step of transmitting the laser light generated by the laser generating section to the handpiece through the optical fiber and irradiating the transmitted laser light to the patient through the tip, The laser beam irradiated to the patient is a laser beam having a wavelength of 720 nm to 780 nm generated by the first laser generator and a laser beam having a wavelength of 955 nm to 1100 nm generated by the second laser generator.
19. The multi-wavelength laser irradiation method according to claim 18, characterized in that: The laser beam irradiated to the patient is the laser beam with a wavelength of 720 nm to 780 nm generated by the first laser generator and the laser beam with a wavelength of 955 nm to 1100 nm generated by the second laser generator simultaneously or with a time difference of 200 ms.