KR20240068284A - Irradiation Unit of Medical Multi-wavelength Laser Treatment Apparatus and Driving Method Thereof - Google Patents

Abstract

An irradiation unit of a medical multi-wavelength laser treatment device and a method of driving the irradiation unit are disclosed. The irradiation unit of the medical multi-wavelength laser treatment device according to the present invention includes a flash lamp that generates a designated laser beam and an Nd:YaG medium that excites the generated laser beam and outputs it as a laser of the first or second wavelength. A mirror unit including an ANDYAG laser cavity, a total reflection mirror and an output mirror provided on one side and the other of the ANDYAG laser cavity respectively to resonate and oscillate a laser beam excited by the ANDYAG medium, a total reflection mirror and an ANDYAG A pulse generator provided between the laser cavities and operating to selectively output a first wavelength laser or a second wavelength laser generated when resonance and oscillation operations occur, and a first wavelength laser output through an output mirror. It includes a laser conversion unit that converts and outputs a laser of a third wavelength.

Description

Irradiation unit of medical multi-wavelength laser treatment device and driving method of the irradiation unit {Irradiation Unit of Medical Multi-wavelength Laser Treatment Apparatus and Driving Method Thereof}

The present invention relates to an irradiation unit of a medical multi-wavelength laser treatment device and a method of driving the irradiation unit, and more specifically, to treat various types of patients by generating lasers of three types of pulse widths and three wavelengths in one device. It relates to an irradiation unit of a medical multi-wavelength laser treatment device that can be used for medical purposes and a method of driving the irradiation unit.

Laser treatment devices used in the existing medical field irradiate a low-energy laser to the patient's skin to burn the skin to remove moles, or irradiate a slightly higher-energy laser to the patient and use it for surgery to incise the affected area without bleeding. It is used in various ways. The principle of laser is that water, melanin, oxyhemoglobin, etc. have a unique frequency, so when a laser beam of a specific wavelength with a similar frequency is irradiated, it only responds to a specific target. This is the biggest feature of a laser that can selectively treat specific targets. It is related to the absorbance of the target, but the biggest difference is that general light has multiple wavelengths, but a laser has only a single, defined wavelength.

The wavelength has a specific wavelength depending on the medium that makes up the laser equipment and determines the type of laser. Types of lasers can be divided into several types, such as CO2, Nd:YAG, Alexandrit, diode, and excimer, depending on the medium. Depending on the scope of application, there are lasers used in soft tissue surgery for incisions, ulcers, removal, and disinfection in general hospitals, and lasers used in hard and soft tissues for cavity removal, implant surgery, hypersensitivity reactions, etc. in dentistry. Lasers are being used.

Lasers used to date are divided into lasers used to treat skin tumors, scars, etc., lasers for blood vessel treatment, and tattoo removal lasers. As interest in skin aging and skin regeneration increases, lasers are used to treat incisions, ulcers, removal, disinfection, etc. The functions of existing lasers, which were commonly used for the purpose of skin lifting, elasticity, and regeneration, are being expanded as demand increases.

While various types of lasers are used depending on the treatment area, existing laser generators have a laser structure that generates only one wavelength, so in medical settings, various types of lasers are generated according to each wavelength for various types of procedures. I had to have the device. This increases the cost burden, requires a lot of space to install various types of devices, and causes inconvenience in storage, management, and handling.

Korean Patent Publication No. 10-3004169 (2019.07.22) Korean Patent Publication No. 10-2021-0034579 (2021.03.30) Korean Patent Publication No. 10-2015-0039071 (2015.02.25)

An embodiment of the present invention is an irradiation unit of a medical multi-wavelength laser treatment device that can be used to treat various types of patients by generating lasers of three types of pulse widths and three wavelengths in one device, and a method of driving the irradiation unit. The purpose is to provide.

According to one aspect of the present invention, an ANDYAG laser comprising a flash lamp that generates a designated laser beam and an Nd:YaG medium that excites the generated laser beam and outputs it as a laser of a first or second wavelength. A cavity, a mirror unit including a total reflection mirror and an output mirror provided on one side and the other of the ANDYAG laser cavity, respectively, to resonate and oscillate a laser beam excited by the ANDYAG medium, the total reflection mirror and the ANDYAG A pulse generator provided between the YAG laser cavities and operating to selectively output the laser of the first wavelength or the laser of the second wavelength generated when the resonance and oscillation operations occur, and output through the output mirror. An irradiation unit of a medical multi-wavelength laser treatment device may be provided, comprising a laser conversion unit that converts the first wavelength laser into a third wavelength laser.

The mirror unit includes a first total reflection mirror operating when the laser of the first wavelength is output, a second total reflection mirror disposed in a direction perpendicular to the first total reflection mirror and operating when the laser of the second wavelength is output, and the first total reflection mirror. It may include a partial reflection mirror provided at an intersection where the total reflection mirror and the second total reflection mirror partially reflect the laser of the second wavelength.

The irradiation unit of the multi-wavelength laser treatment device includes a first solenoid shutter provided on one side of the first total reflection mirror to control the laser output of the first wavelength on and off, and a first solenoid shutter provided on one side of the second total reflection mirror. It may further include a second solenoid shutter that turns on and off the laser output of the second wavelength.

The pulse generator includes a first pulse generator that operates by a first pulse during the oscillation and resonance operations to primary convert the optical characteristics of the laser beam, and a first pulse generator that operates by a second pulse during the oscillation and resonance operations to convert the primary It may include a second pulse generator that secondary converts the optical characteristics of the converted laser beam and provides the converted laser beam to the Nd:YaG medium.

The irradiation unit of the medical multi-wavelength laser treatment device may further include a power supply unit that drives the flash lamp with a first pulse voltage or a second pulse voltage of a lower frequency than the first pulse voltage, depending on the type of the flash lamp. there is.

The laser conversion unit includes a KTP (potassium-titanylphosphate) element in a nonlinear medium that converts the laser of the first wavelength into a laser of the third wavelength, and when the laser of the first wavelength is output through the output mirror, It may further include an encoder motor that moves the KTP element from a designated position to the position of the output mirror.

In addition, according to one aspect of the present invention, an Nd:YaG laser cavity including a flash lamp that generates a designated laser beam and an Nd:YaG medium that excites the generated laser beam generates the excited laser beam. Outputting with a laser of a first or second wavelength, a mirror unit including a total reflection mirror and an output mirror provided on one side and the other side of the ANDYAG laser cavity, respectively, resonates and oscillates the laser beam excited by the ANDYAG medium. A pulse generator provided between the total reflection mirror and the ANDYAG laser cavity operates to selectively output the laser of the first wavelength generated when the resonance and oscillation operations are performed. A method of driving an irradiation unit of a medical multi-wavelength laser treatment device comprising a step of converting, by a laser conversion unit, the laser of the first wavelength output through the output mirror into a laser of a third wavelength will be provided. You can.

The method of driving the irradiation unit of the medical multi-wavelength laser treatment device includes operating a first total reflection mirror of the mirror unit when outputting laser of the first wavelength, the mirror disposed in a direction perpendicular to the first total reflection mirror. operating a negative second total reflection mirror when outputting a laser of the second wavelength, and a partial reflection mirror provided at an intersection where the first total reflection mirror and the second total reflection mirror view the laser of the second wavelength. A step of partial reflection may be further included.

The method of driving the irradiation unit of the medical multi-wavelength laser treatment device includes the steps of controlling the laser output of the first wavelength on and off by a first solenoid shutter provided on one side of the first total reflection mirror, and the second total reflection mirror. The method may further include controlling the laser output of the second wavelength on and off by a second solenoid shutter provided on one side of the mirror.

The method of driving the irradiation unit of the medical multi-wavelength laser treatment device includes the steps of the first pulse generator of the pulse generator operating by a first pulse during the oscillation and resonance operations to primary convert the optical characteristics of the laser beam; And the second pulse generator of the pulse generator operates by a second pulse during the oscillation and resonance operation to secondary convert the optical characteristics of the primary converted laser beam and provide the optical characteristics of the primary converted laser beam to the Nd:YaG medium. Additional steps may be included.

The method of driving the irradiation unit of the medical multi-wavelength laser treatment device includes the power supply unit driving the flash lamp with a first pulse voltage or a second pulse voltage with a frequency lower than the first pulse voltage, depending on the type of the flash lamp. Additional steps may be included.

The method of driving the irradiation unit of the medical multi-wavelength laser treatment device includes converting, by the KTP element of the laser conversion unit, the laser of the first wavelength into a laser of the third wavelength and outputting the laser, and determining the operating position of the KTP element. The controlling encoder motor may further include moving the KTP element from a designated position to the position of the output mirror when the laser of the first wavelength is output through the output mirror.

According to an embodiment of the present invention, optically stable alignment can be maintained in KTP, a nonlinear medium for frequency doubling, using a precise transport device such as a switching element driven according to an electrical signal and a precision encoder motor, and a shutter using a solenoid coil. You can use it for fast shutter operation.

In addition, the embodiment of the present invention freely uses a medical multi-wavelength laser treatment device irradiation unit with three pulse widths and three wavelengths that output stable constant energy for medical application and development, thereby enabling various medical developments. It is possible, and by using it for patient treatment, it is efficient and economical.

1 is an exemplary diagram of a medical multi-wavelength laser treatment device according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating the internal structure of the laser irradiation unit of FIG. 1.
Figure 3 is a block diagram illustrating the detailed structure of the laser irradiation unit of Figure 2.
Figure 4 is a flowchart showing the operation process of a medical multi-wavelength laser treatment device according to an embodiment of the present invention.

Specific structural or functional descriptions of the embodiments according to the concept of the present invention disclosed in this specification are merely illustrative for the purpose of explaining the embodiments according to the concept of the present invention, and the embodiments according to the concept of the present invention are It may be implemented in various forms and is not limited to the embodiments described herein.

Since the embodiments according to the concept of the present invention can make various changes and have various forms, the embodiments will be illustrated in the drawings and described in detail in this specification. However, this is not intended to limit the embodiments according to the concept of the present invention to specific disclosed forms, and includes all changes, equivalents, or substitutes included in the spirit and technical scope of the present invention.

Terms such as first or second may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component, for example, without departing from the scope of rights according to the concept of the present invention, a first component may be named a second component, and similarly The second component may also be named the first component.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between. Other expressions that describe the relationship between components, such as "between" and "immediately between" or "neighboring" and "directly adjacent to" should be interpreted similarly.

The terms used in this specification are merely used to describe specific embodiments and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “comprise” or “have” are intended to designate the presence of implemented features, numbers, steps, operations, components, parts, or combinations thereof, but are not intended to indicate the presence of one or more other features or numbers. It should be understood that this does not exclude in advance the possibility of the existence or addition of steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms as defined in commonly used dictionaries should be interpreted as having meanings consistent with the meanings they have in the context of the related technology, and unless clearly defined in this specification, should not be interpreted in an idealized or overly formal sense. No.

In the drawings, the thicknesses of layers and regions are exaggerated for clarity. When a layer is said to be "on" another layer or substrate, or when a layer is said to be bonded or bonded to another layer or substrate, it may be formed directly on the other layer or substrate or may have a third layer between them. This may be involved. Parts indicated with the same reference numbers throughout the specification refer to the same components.

Terms such as top, bottom, upper surface, lower surface, front, rear, or upper and lower are used to distinguish the relative positions of components. For example, for convenience, if the upper part of the drawing is called upper and the lower part of the drawing is called lower, in reality, the upper part can be called lower, and the lower part can be called upper, without departing from the scope of the present invention. . Additionally, the components in the drawings are not necessarily drawn to scale, and for example, the size of some components in the drawings may be exaggerated compared to other components to facilitate understanding of the present invention.

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

Figure 1 is an exemplary diagram of a medical multi-wavelength laser treatment device according to an embodiment of the present invention, and Figure 2 is a diagram illustrating the internal structure of the laser irradiation unit of Figure 1.

As shown in Figures 1 and 2, the medical multi-wavelength laser treatment device 100 according to an embodiment of the present invention controls a cooling system, a power supply, and a main PCB including a CPU or MPU. It may include a main body portion 110 containing the device inside, and part or all of a laser irradiation unit (or laser head portion) 120.

Here, “including part or all” means that the medical multi-wavelength laser treatment device 100 is configured by omitting some components such as the cooling system, or that some components such as the power supply are included with the laser irradiation unit 120. It means something that can be formed by being integrated with other components of the same type, and is explained as being all-inclusive to facilitate a sufficient understanding of the invention.

The main body 110 may operate a cooling system inside the case, that is, cool the laser irradiation unit 120 by circulating water when the laser irradiation unit 120 overheats. Therefore, the cooling system may also be named a cooling unit. In other words, when outputting by pumping a single laser load at a high repetition rate, the system requires high cooling efficiency. On the other hand, when using multiple laser rods, the repetition rate of pumping and outputting each cavity can be reduced, and since heat accumulation is reduced compared to a single cavity system, temperature control may be possible with an air-cooled/water-cooled system.

The power supply is a power supply device that can supply the power needed by the laser irradiation unit 120 and the power needed by the cooling system. Typically, a power supply converts commercial power of 110V or 220V into DC power, and can generate DC voltages of various sizes that can be used in the medical multi-wavelength laser treatment device 100. For this purpose, a DC voltage of the desired size can be obtained by pumping up through a DC-DC converter or charging circuit. Typically, the laser irradiation unit 120 is composed of various parts and can be seen as generating power for these parts.

The control device may be composed of a main PCB, and on the main PCB, it may be composed of a control circuit such as a CPU or MPU that performs actual control operations, and its peripheral circuits. The control device is responsible for the overall control operation of the cooling system, power supply, and laser irradiation unit 120. For example, the laser irradiation unit 120 is operated according to a user command input through a touch screen to perform medical treatment using three types of laser wavelengths. Through this, various treatments, procedures, or surgeries can be performed in general hospitals or dental clinics using lasers of, for example, 1064 nm, 1320 nm, and 532 nm.

The laser irradiation unit 120 is configured to generate a driving pulse or pulse voltage having three types of pulse widths in one device according to an embodiment of the present invention, and to generate lasers of three wavelengths using this. have For example, the laser irradiation unit 120 may include first to third pulse generators that generate three types of pulse widths: picosecond, nanosecond, and microsecond. there is. In addition, the laser irradiation unit 120 can generate lasers of 1064 nm, 1320 nm, and 532 nm as the first to third wavelengths of the above three wavelengths. This allows it to be used for the treatment of various types of patients, making it efficient and economical to use. Of course, in the embodiment of the present invention, when manufacturing a multi-wavelength medical device for use as a medical device, a pulse generator with various pulse widths and a laser generator for generating lasers of various wavelengths can be configured, so the present invention In the examples, there will be no particular limitation to any one form.

For example, in an embodiment of the present invention, the first to third laser generators (or generators) may be configured to generate three wavelengths in the laser irradiation unit 120. However, in an embodiment of the present invention, a first laser generator and a second laser generator that generate lasers or laser wavelengths of first and second wavelengths such as 1064 nm or 3320 nm may be integrated. In fact, it is desirable to have such an integrated structure. However, there will be no particular limitation to such form. Therefore, in the embodiment of the present invention, this integrated laser generator may be called the first laser generator 200. When looking at FIG. 2, it can be seen that the first laser generator 200 is placed on one side. Of course, the internal configuration of the first laser generator 200 will be discussed in more detail later with reference to FIG. 3. Above all, the first laser generator 200 operates to output a wavelength of 1064 nm when the medical staff selects the first button for generating a 1064 nm laser wavelength on the touch screen of the multi-wavelength medical device 100. This is achieved, and for example, when the second button for generating a laser wavelength of 1320 nm is selected on the touch screen, a laser wavelength of 1320 nm is output. Of course, medical staff such as doctors may control the foot push button to operate the shutter to temporarily stop the currently output laser.

In addition, the laser irradiation unit 120 according to an embodiment of the present invention may further configure second laser generators 210 and 220 to output a laser with a wavelength of 530 nm. When looking at FIG. 2, it can be seen that the second laser generators 210 and 220 are configured on the right side. When a laser with a wavelength of 1064 nm or a laser with a wavelength of 1320 nm is output through the first laser generator 200, the second laser generators 210 and 220 are located at a first position outside the output path of the laser. In this state, when the third button for outputting the laser with a wavelength of 532 nm is selected on the touch screen, the laser moves from the first position to the second position, which is the output path of the laser with a wavelength of 1064 nm (e.g., output mirror). Of course, at this time, it is preferable that the first laser generator 200 outputs a laser with a wavelength of 1064 nm. Accordingly, the second laser generators 210 and 220 convert the 1064 nm wavelength laser output from the first laser generator 200 into a 532 nm wavelength laser and output it.

The second laser generators 210 and 220 are KTP (Potassium-Titanyl-Phosphate) elements (parts) in a nonlinear medium that convert a laser of a first wavelength (e.g., 1064 nm) into a laser of a third wavelength (e.g., 532 nm). Includes (220). Therefore, the 1320 nm wavelength laser according to the embodiment of the present invention can be a second wavelength laser. The KTP device unit 220 may include a partially reflective mirror (or second partially reflective mirror) 362 for a wavelength of 532 nm. In addition, the second laser generators 210 and 220 include a motor 210 that moves the position of the KTP element unit 220 from the first position to the second position and moves it from the second position to the first position. do. The KTP element unit 220 is connected to the drive shaft of the motor, and an encoder motor can be used for precise control. The encoder motor may be, for example, a DC motor, and precise control of the motor may be possible by providing information about the rotation angle. Of course, the operation control of the motor 210 can be controlled by a control device such as the main PCB.

As a result of the above configuration, the medical multi-wavelength laser treatment device 100 according to an embodiment of the present invention selectively outputs a first wavelength laser or a second wavelength laser according to a user command from the first laser generator 200. do. The selective output for lasers of different wavelengths uses the same Nd:YAG medium, but can be considered to be determined by a configuration that resonates and oscillates (or amplifies) the laser beam excited by the medium differently. You can. In addition, the second laser generators 210 and 220 operate in conjunction with the first laser generator 200. For example, when a user command for generating 532 nm is input, the first laser generator 200 generates a laser with a wavelength of 1064 nm. is output, and the wavelength of the laser can be converted by the KTP element 220 of the amorphous medium to output a laser with a wavelength of 532 nm. More details will be covered later.

Figure 3 is a block diagram illustrating the detailed structure of the laser irradiation unit of Figure 2.

For convenience of explanation, referring to FIG. 3 together with FIG. 2, the laser irradiation unit 120 according to an embodiment of the present invention includes Nd:YAG laser cavity parts 310, 380, 390, mirror parts 313, It includes part or all of 316, 322, 323), pulse generators 330, 340, laser conversion unit 360, and drive units (300, 314, 317, 321, 334, 344, 350, 370).

Here, “including part or all” means that the laser irradiation unit 120 is formed by omitting some of the components constituting the driving unit 300, 314, 321, 334, 344, 350, 370, or the laser conversion unit. This means that some components, such as (360), can be integrated and configured with other components, such as the driving unit (300, 314, 321, 334, 344, 350, 370), to help a sufficient understanding of the invention. It is explained as including everything.

It has been described in FIG. 2 that the laser irradiation unit 120 according to an embodiment of the present invention is composed of a first laser generator 200 and a second laser generator 210 and 220. Accordingly, the Nd:YAG laser cavity parts 310, 380, 390, mirror parts 313, 316, 322, 323, and pulse generators 330, 340 of FIG. 3 are the first laser generator ( 200), and the laser conversion unit 360 can configure the second laser generators 210 and 220. Of course, here, the second laser generators 210 and 220 may further include an encoder motor (part) 210. The encoder motor unit 210 may be composed of an encoder motor and a motor control unit that controls the motor. Of course, in the embodiments of the present invention, the ANDYAG medium is illustrated for convenience of explanation, but it will not be particularly limited thereto.

The ANDYAG laser cavity portions 310, 380, and 390 correspond to laser optical resonators. The ANDYAG laser cavity units 310, 380, and 390 may be composed of an ANDYAG laser cavity 310, a first power source 380, and a second power source 390. The ANDYAG laser cavity 310 may include an ANDYAG medium unit 311 and a flash lamp 312, and the flash lamp 312 is the first (lamp) power unit 380 or the second (lamp) power unit 380. It can be operated by power provided from the power supply unit 390. That is, the flash lamp 312 can generate a laser beam of a specified wavelength. The generated laser beam is excited by the ANDYAG medium unit 311, and the excited laser resonates through a pair of mirror units 313, 316, 322, and 323 to oscillate, for example, to amplify. And the pumped laser is output to the output mirror 316. At this time, the flash lamp 312 may be operated by the first power supply unit 380 or the second power supply unit 390 depending on the product, and the first power supply unit 380 according to an embodiment of the present invention can operate at microseconds (㎲). It is possible to generate a driving pulse and operate the flash lamp 312 with the driving pulse. Additionally, the second power supply unit 390 may generate a long pulse driving pulse with a frequency lower than microseconds and provide the driving pulse to the flash lamp 312. Since the driving voltage of the flash lamp 312 can be selected and used in various ways, embodiments of the present invention will not be specifically limited to any one type.

The ANDYAG laser cavity units 310, 380, and 390, more precisely, the ANDYAG laser cavity 310, are composed of a pair of mirror units 313, 316, 322, and 323 on one side and the other side. As can be seen in Figure 3, based on the ANDYAG laser cavity 310, or more precisely, based on the direction in which the laser outputs, an output mirror 316 is configured on the right side, and on the left side is 1064 nm, that is, the first wavelength. A 1064 nm total reflection mirror (or first total reflection mirror) 313 used to generate a laser is configured. And, in a direction perpendicular to the 1064nm total reflection mirror 313, a 1320nm total reflection mirror (or second total reflection mirror) 322 is configured that operates to generate a laser of 1320nm, that is, the second wavelength. In addition, a 1320nm partial reflection mirror (or first partial reflection mirror) 323 is formed at the intersection of the vertically arranged 1064nm total reflection mirror 313 and the 1320nm total reflection mirror 322 in directions facing each other. The total reflection mirrors 313, 322 and the output mirror 316 allow the laser beam irradiated from the flash lamp 312 to the ANDYAG medium part 311 to resonate and resonate through the total reflection mirrors 313, 322 and the output mirror 316. It can be seen that it is configured to oscillate and output. A third wave plate 315 is provided between the ANDYAG medium unit 311 and the output mirror 316. A resonator is a device that uses the resonance phenomenon to extract waves or vibrations of a specific frequency, that is, to output them. Therefore, the laser resonator can be viewed as a key device that creates the laser wavelength desired by the device designer.

The pulse generators 330 and 340 according to an embodiment of the present invention may include a first pulse generator 330 and a second pulse generator 340. The pulse generators 330 and 340 may be provided between the total reflection mirror units 313 and 322 and the ANDYAG cavity 310. The pulse generators 330 and 340 may operate to selectively output a first wavelength laser and a second wavelength laser according to an embodiment of the present invention. In other words, it can be seen as changing the state of the resonance phenomenon. In other words, resonance occurs by the total reflection mirror units 313 and 322 and the output mirror 316 formed on the output side of the ANDYAG cavity 310 according to the operation of the first pulse generator 330 and the second pulse generator 340. And an operation path for oscillation is created, through which a laser of a desired wavelength can be output. For example, in order to output a laser with a wavelength of 1064 nm, the first solenoid shutter 314 provided on the side of the 1064 nm total reflection mirror 313 is opened to output a laser with a wavelength of 1064 nm through the output mirror 316 through resonance and oscillation actions. is output.

On the other hand, in order to output a laser with a wavelength of 1320 nm, the second solenoid shutter 321 provided on one side of the 1320 nm total reflection mirror 322 is opened, so that the laser beam excited through the total reflection mirror 322 and the output mirror 316 is It resonates and oscillates and is output. Of course, the first solenoid shutter 314 and the second solenoid shutter 321 can be viewed as operating as a type of safety device. By using a shutter using a solenoid coil, the shutter can be operated quickly. In other words, when a medical staff such as a doctor controls a foot push switch to irradiate a laser to an object, the corresponding shutter opens and operates.

The first pulse generator 330 and the second pulse generator 340 constituting the pulse generators 330 and 340 have similar configurations. In other words, each pulse generator (330, 340) includes a wave plate (331, 341) and pulse switching elements (332, 342) and polarizers (333, 343) formed on one side. In addition, it may be configured to include electric signals 334 and 344 that generate pulses for controlling the pulse switching elements 332 and 342 under the control of the control unit 350. The electrical signals 334 and 344 may actually be pulse generators, and may be configured as PWM controllers, oscilloscopes, etc. In other words, the pulse generated by the oscilloscope, which is an oscillator, can generate a driving pulse of nanoseconds (㎱) required by the first pulse generator 330 through the PWM controller. That is, the first pulse switching element 332 constituting the first pulse generator 330 is turned on and off by nanosecond driving pulses. Additionally, the second pulse generator 340 operates with picosecond (㎰) driving pulses and turns the second pulse switching device 342 on and off with picosecond driving pulses. According to the operation of the first pulse switching element 332 and the second pulse switching element 342, the first wave plate 331 and the first polarizing plate 333 of the first pulse generator 330 resonate and oscillate the laser beam. , that is, the laser beam can be primarily polarized, and the second wave plate 341 and the second polarizer 333 of the second pulse generator 340 also affect the resonance and oscillation of the laser beam. It goes crazy. That is, a primarily polarized laser beam can be polarized. Here, the polarizers 333 and 343 can be operated to change the optical characteristics of the laser beam, such as linear polarization or circular polarization. Of course, this is determined by the crystals constituting the polarizer, but through this, the directionality of the laser beam is controlled. It could be. In other words, when resonating and oscillating through the total reflection mirror units 311 and 322 and the output mirror 316, the first pulse generator 330 and the second pulse generator 340 produce a laser with a wavelength of 1064 nm and a laser with a wavelength of 3320 nm. It can be seen that it outputs the laser selectively and at the same time outputs the laser in the desired direction with accurate directionality. The first and second wave plates 331 and 341, including the third wave plate 315, may be a type of condensing plate that focuses a laser beam.

In addition, the driving units (300, 314, 317, 321, 334, 344, 350, 370) include a first solenoid shutter (314), a shutter control unit (317), a second solenoid shutter (321), and a first electrical signal unit (334). , it may include a second electrical signal unit 344, a control unit 350 such as a CPU or MPU, an encoder control unit 370, and a (user) operation unit 300. The manipulation unit 300 may also be called a user interface unit. The shutter control unit 317 or the encoder control unit 370 may operate as a sub-controller that operates according to commands from the control unit 350. For example, when a user command to generate a laser with a wavelength of 1064 nm is received through the manipulation unit 300, the control unit 350 can control the shutter control unit 317 according to the command. Additionally, the control unit 350 may operate at least one of the first pulse generator 330 and the second pulse generator 340 to generate a laser with a wavelength of 1064 nm. In this process, if it is desired to temporarily stop the currently output laser, the first solenoid shutter 314 can be controlled to operate as a safety device by controlling it through the shutter control unit 317.

Additionally, when there is a command to generate a laser with a wavelength of 532 nm from a medical staff member through the manipulation unit 300, the control unit 350 performs an operation to generate a laser with a wavelength of 1064 nm as before. At the same time, the encoder control unit 370 is operated to convert the 1064nm wavelength laser into a 532nm wavelength laser. The encoder control unit 370 may include an encoder motor and a motor control unit for controlling the corresponding motor. For example, the motor control unit can pre-store control signal data for operating the encoder motor with a specific pulse, and therefore, when the control unit 350 requests operation, it can control the encoder motor by generating pulses based on the pre-stored data value. You can. Of course, it has already been explained that the encoder motor operates to move the position of the laser conversion unit 360 from the first position to the second position. For more detailed information, I would like to replace them with those contents.

In summary, the medical multi-wavelength laser treatment device 100 according to an embodiment of the present invention has three types of pulse widths (e.g., picosecond, nanosecond, microsecond) and three wavelengths (e.g., 1064 nm, In order to realize laser generation of 3320 nm, 532 nm), the precision encoder motor, solenoid shutter, and electric signal, or pulse generator, are driven according to the signal input through the Touch LCD to generate picosecond, nanosecond, and microsecond (Picosecond, Nanosecond, and Microsecond) Microsecond) and can selectively generate 1064nm and 1320nm by driving a solenoid shutter, and can generate 532nm laser by driving a KTP element capable of frequency doubling with a precision encoder motor, so there are three pulse widths and three types. It is possible to implement a wavelength of and provide constant energy output.

Nd:YAG laser cavity unit (310, 380, 390), a pair of mirror units (313, 316, 322, 323), pulse generators (330, 340), and laser according to an embodiment of the present invention The conversion unit 360 and the driving unit 300, 314, 317, 321, 334, 344, 350, and 370 are composed of hardware modules that are physically separated from each other, but each module has software inside to perform the above operations. You will be able to save and run it. However, the software is a set of software modules, and each module can be formed as hardware, so there will be no particular limitation on the configuration of software or hardware. For example, the storage unit that stores programs or data may be hardware, such as storage or memory. However, since it is possible to store information through software (repository), the above content will not be specifically limited.

Meanwhile, as another embodiment of the present invention, the control unit 350 may include a CPU and memory, and may be formed as a single chip. The CPU includes a control circuit, an arithmetic unit (ALU), an instruction interpretation unit, and a registry, and the memory may include RAM. The control circuit performs control operations, the operation unit performs operations on binary bit information, and the command interpretation unit includes an interpreter or compiler, which can convert high-level language into machine language and machine language into high-level language. , the registry may be involved in software data storage. According to the above configuration, for example, at the beginning of operation of the multi-wavelength medical device 100, etc., the program stored in external memory, etc. is copied, loaded into internal memory, that is, RAM, and then executed, thereby speeding up the data operation processing speed. can be increased. In the case of deep learning models, they can be loaded into GPU memory rather than RAM and executed by accelerating the execution speed using GPU.

Figure 4 is a flowchart showing the operation process of a medical multi-wavelength laser treatment device according to an embodiment of the present invention.

For convenience of explanation, referring to FIG. 4 together with FIG. 3, the ANDYAG cavity 310 of FIG. 3 directs the laser beam generated by the flash lamp 312 and excited by the ANDYAG medium 311 into the first or second Output using a wavelength laser (S400). Here, the first wavelength laser may be a 1064nm wavelength laser, and the second wavelength laser may be a 1320nm wavelength laser.

In addition, the reflection unit composed of the total reflection mirrors 313 and 322 and the output mirror 316 provided on one side and the other of the ANDYAG cavity 310, respectively, resonates and transmits the laser beam excited by the ANDYAG medium 311. Make it oscillate (S410). In other words, it uses the resonance phenomenon to draw out waves or vibrations of a specific frequency, that is, output them. Through this, the desired specified wavelength can be output.

Furthermore, the pulse generators 330 and 340 of FIG. 3 operate to selectively output the first wavelength laser and the second wavelength laser generated when resonance and oscillation operations are performed (S420). That is, when resonance and oscillation operations are performed through the total reflection mirrors 313 and 322 on one side and the output mirror 316 on the other side, the pulse generators 330 and 340 produce optical signals of the laser beam through the polarizers 333 and 343, etc. By changing the characteristics, the laser beam can be output precisely or accurately through the output mirror 316. Alternatively, the intensity of the laser beam can be adjusted thereby. The pulse generators 330 and 340 may be composed of a first pulse generator 330 that operates on nanosecond driving pulses and a second pulse generator 340 that operates on picosecond driving pulses. The first pulse generator 330 ) and the second pulse generator 340 may operate simultaneously when the first wavelength laser and the second wavelength laser are generated. However, the selective output of the first wavelength laser and the second wavelength is related to whether the first solenoid shutter 314 of the first total reflection mirror 313 is opened, which is related to the generation of the laser of the 1064 nm wavelength, or the laser of the 1320 nm wavelength is opened. Since this may be determined by whether the second solenoid shutter 321 of the second total reflection mirror 322 is opened, the embodiment of the present invention will not be particularly limited to any one form.

Additionally, the laser conversion unit 360 in FIG. 3 converts the laser of the first wavelength into a laser of the third wavelength and outputs it (S430). In this process, the laser conversion unit 360, or more precisely, the KTP element 361 of the amorphous medium, may change position. In other words, when converting a 1064 nm laser into a 532 nm laser, the KTP element 361 is positioned at a designated location toward the output mirror 316, where a 1064 nm wavelength laser is output. This KTP element 361 can perform precise control operations by connecting the KTP element 361 to the drive shaft of the encoder motor.

In addition to the above, the medical multi-wavelength laser treatment device 100 according to an embodiment of the present invention can perform various operations, and other details have been sufficiently explained previously, so these will be replaced.

Although preferred embodiments have been shown and described above, the present invention is not limited to the specific embodiments described above, and common knowledge in the technical field to which the invention pertains without departing from the gist of the present invention as claimed in the claims. Of course, various modifications are possible by those who have the same, and these modifications should not be understood individually from the technical idea or perspective of the present invention.

Meanwhile, just because all the components constituting the embodiment of the present invention are described as being combined or operated in combination, the present invention is not necessarily limited to this embodiment. That is, as long as it is within the scope of the purpose of the present invention, all of the components may be operated by selectively combining one or more of them. In addition, although all of the components may be implemented as a single independent hardware, a program module in which some or all of the components are selectively combined to perform some or all of the combined functions in one or more pieces of hardware. It may also be implemented as a computer program having. The codes and code segments that make up the computer program can be easily deduced by a person skilled in the art of the present invention. Such computer programs can be stored in non-transitory computer readable media and read and executed by a computer, thereby implementing embodiments of the present invention.

Here, a non-transitory readable recording medium refers to a medium that stores data semi-permanently and can be read by a device, rather than a medium that stores data for a short period of time, such as a register, cache, or memory. . Specifically, the above-described programs may be stored and provided on non-transitory readable recording media such as CD, DVD, hard disk, Blu-ray disk, USB, memory card, ROM, etc.

In the above, preferred embodiments of the present invention have been shown and described, but the present invention is not limited to the specific embodiments described above, and may be used in the technical field to which the invention pertains without departing from the gist of the invention as claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be understood individually from the technical idea or perspective of the present invention.

110: main body 120: laser irradiation unit
200: first laser generator 210, 220: second laser generator
210: Encoder motor (part) 220, 361: KTP element (part)
300: Control panel 310: Andyag cavity
330: first pulse generator 340: second pulse generator
360: Laser conversion unit

Claims (12)

An ANDYAG laser cavity including a flash lamp that generates a designated laser beam and an Nd:YaG medium that excites the generated laser beam and outputs it as a laser of a first or second wavelength;
A mirror unit including a total reflection mirror and an output mirror provided on one side and the other of the ANDYAG laser cavity, respectively, to resonate and oscillate a laser beam excited by the ANDYAG medium;
a pulse generator provided between the total reflection mirror and the ANDYAG laser cavity and operating to selectively output a laser of the first wavelength or a laser of the second wavelength generated when the resonance and oscillation operations occur; and
a laser conversion unit that converts the first wavelength laser output through the output mirror into a third wavelength laser;
An irradiation unit of a medical multi-wavelength laser treatment device, comprising: According to paragraph 1,
The mirror unit,
a first total reflection mirror operating when the laser output of the first wavelength is output;
a second total reflection mirror disposed in a direction perpendicular to the first total reflection mirror and operating when the laser output of the second wavelength is output; and
A partial reflection mirror provided at the intersection where the first total reflection mirror and the second total reflection mirror face to partially reflect the laser of the second wavelength;
An irradiation unit of a medical multi-wavelength laser treatment device, comprising: According to paragraph 2,
a first solenoid shutter provided on one side of the first total reflection mirror to control on and off the laser output of the first wavelength; and
a second solenoid shutter provided on one side of the second total reflection mirror to control the laser output of the second wavelength on and off;
An irradiation unit of a medical multi-wavelength laser treatment device, comprising: According to paragraph 1,
The pulse generator,
A first pulse generator that operates by a first pulse during the oscillation and resonance operations to primary convert the optical characteristics of the laser beam; and
A second pulse generator that operates by a second pulse during the oscillation and resonance operations to secondaryly convert the optical characteristics of the primary converted laser beam and provide the optical characteristics of the primary converted laser beam to the Nd:YaG medium;
An irradiation unit of a medical multi-wavelength laser treatment device, comprising: According to paragraph 1,
A power supply unit that drives the flash lamp with a first pulse voltage or a second pulse voltage of a lower frequency than the first pulse voltage, depending on the type of the flash lamp. Investigation unit. According to paragraph 1,
The laser conversion unit,
a KTP (potassium-titanylphosphate) device in a nonlinear medium that converts the laser of the first wavelength into a laser of the third wavelength; and
An encoder motor that moves the KTP element from a designated position to the position of the output mirror when the laser of the first wavelength is output through the output mirror;
An irradiation unit of a medical multi-wavelength laser treatment device, comprising: An Nd:YaG laser cavity including a flash lamp that generates a designated laser beam and an Nd:YaG medium that excites the generated laser beam generates the excited laser beam at a first or second wavelength. Printing with a laser;
Resonating and oscillating a laser beam excited by the ANDYAG medium by a mirror unit including a total reflection mirror and an output mirror provided on one side and the other side of the ANDYAG laser cavity, respectively;
operating a pulse generator provided between the total reflection mirror and the ANDYAG laser cavity to selectively output the laser of the first wavelength and the laser of the second wavelength, which are generated when the resonance and oscillation operations occur; and
A laser conversion unit converts the laser of the first wavelength output through the output mirror into a laser of a third wavelength;
A method of driving an irradiation unit of a medical multi-wavelength laser treatment device, comprising: In clause 7,
Operating the first total reflection mirror of the mirror unit when outputting laser of the first wavelength;
operating a second total reflection mirror of the mirror unit disposed in a direction perpendicular to the first total reflection mirror when outputting laser of the second wavelength; and
A partial reflection mirror provided at an intersection of the first total reflection mirror and the second total reflection mirror partially reflects the laser of the second wavelength;
A method of driving an irradiation unit of a medical multi-wavelength laser treatment device, further comprising: According to clause 8,
A first solenoid shutter provided on one side of the first total reflection mirror controls on and off the laser output of the first wavelength; and
A second solenoid shutter provided on one side of the second total reflection mirror controls on and off the laser output of the second wavelength;
A method of driving an irradiation unit of a medical multi-wavelength laser treatment device, comprising: In clause 7,
A first pulse generator of the pulse generator is operated by a first pulse during the oscillation and resonance operations to primary convert the optical characteristics of the laser beam; and
The second pulse generator of the pulse generator operates by a second pulse during the oscillation and resonance operations to secondary convert the optical characteristics of the primary converted laser beam and provide the optical characteristics of the primary converted laser beam to the Nd:YaG medium. step;
A method of driving an irradiation unit of a medical multi-wavelength laser treatment device, further comprising: In clause 7,
A multi-wavelength medical laser, characterized in that it further comprises a step of driving the flash lamp by the power supply unit with a first pulse voltage or a second pulse voltage of a lower frequency than the first pulse voltage, depending on the type of the flash lamp. Method of driving the irradiation unit of a treatment device. In clause 7,
converting, by the KTP element of the laser conversion unit, the laser of the first wavelength into a laser of the third wavelength; and
An encoder motor controlling the operating position of the KTP element moves the KTP element from a designated position to the position of the output mirror when the laser of the first wavelength is output through the output mirror;
A method of driving an irradiation unit of a medical multi-wavelength laser treatment device, further comprising: