Laser treatment device

Abstract

To provide a laser treatment device capable of sufficiently securing space in the inside of a housing without impairing a cooling function of a coolant.SOLUTION: A laser treatment device 1 includes: an oscillator 40 for generating a laser beam; a cooling pipe 26 in which a coolant for cooling the oscillator 40 flows; a radiator 31 connected to the cooling pipe 26; a fan 32 for supplying air to the radiator 31; a housing 10 for storing the oscillator 40, the cooling pipe 26, the radiator 31, and the fan 32; and at least one leg part 17 provided on a bottom surface 10B of the housing 10 for generating a gap between the bottom surface 10B and an installation surface on which the housing 10 is installed. The radiator 31 and the fan 32 are arranged at the bottom part of the housing 10. The bottom surface 10B is formed with an exhaust port 22 for discharging the air supplied to the radiator 31 by the fan 32 to the outside.SELECTED DRAWING: Figure 11

Description

[Technical Field]

[0001] The present disclosure relates to a laser treatment device that uses laser light to treat an affected area. [Background technology]

[0002] Laser treatment devices that use laser light to treat an affected area have been known. For example, Patent Document 1 (Japanese Patent Laid-Open Publication No. 11-299802) discloses a medical laser device configured to irradiate an affected area with laser light generated by a laser generator via a laser light guide path such as an optical fiber. This medical laser device is configured to cool the laser generator by recovering heat generated in the laser generator with cooling water, and to re-cool the cooling water by heat exchange in a radiator between the cooling water that has recovered the heat and air taken in from the outside using a cooling fan. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-299802 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, efforts have been made to miniaturize laser treatment devices to allow users to easily move them. To achieve this miniaturization, the placement of a radiator and fan for re-cooling the refrigerant used to cool the oscillator that generates the laser light is important. In a laser treatment device, various components for performing the functions of the laser treatment device, such as the oscillator and power supply, must be housed within a housing. However, the placement of the radiator and fan may result in insufficient space being secured within the housing. Furthermore, it is necessary to avoid impairing the cooling function of the refrigerant due to the placement of the radiator and fan. In this regard, the medical laser device disclosed in Patent Document 1 (Japanese Patent Laid-Open Publication No. 11-299802) does not take into consideration the specific placement of the radiator and cooling fan.

[0005] The present disclosure has been made to solve the above-mentioned problems, and aims to provide a laser treatment device that can ensure sufficient space inside the housing without impairing the cooling function of the refrigerant. [Means for solving the problem]

[0006] The laser treatment device according to the present disclosure includes an oscillator that generates laser light, a cooling pipe through which a refrigerant for cooling the oscillator flows, a radiator connected to the cooling pipe, a fan that supplies air to the radiator, a housing that houses the oscillator, the cooling pipe, the radiator, and the fan, and at least one leg provided on the bottom of the housing to create a gap between the bottom and a mounting surface on which the housing is placed. The radiator and the fan are disposed on the bottom of the housing. The bottom is formed with an exhaust port that discharges air supplied to the radiator by the fan to the outside. [Effects of the Invention]

[0007] According to the present disclosure, since the radiator and fan are disposed at the bottom of the housing, more space can be secured inside the housing than, for example, when the radiator and fan are disposed at the center or side of the housing. Furthermore, the air supplied to the radiator by the fan is discharged to the outside through an exhaust port formed on the bottom of the housing and a gap between the bottom and the installation surface. Therefore, even when the radiator and fan are disposed at the bottom of the housing, the cooling function of the refrigerant can be secured. This allows the laser treatment device to be miniaturized without compromising the cooling function of the refrigerant. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a diagram showing the appearance of a laser treatment device according to an embodiment; [Figure 2] 1 is a diagram showing the appearance of a laser treatment device according to an embodiment; [Figure 3] FIG. 2 is a diagram showing a cooling circuit according to the embodiment. [Figure 4] FIG. 2 is a block diagram of a cooling circuit according to the embodiment. [Figure 5] 1 is a diagram showing the appearance of a cooling device according to an embodiment; [Figure 6] 1 is a diagram showing the appearance of a cooling device according to an embodiment; [Figure 7] 10 is a diagram illustrating an example of a cooling device in a case where a part of a fan is removed from a radiator according to an embodiment. FIG. [Figure 8] FIG. 1 is a cross-sectional view of a cooling device according to an embodiment. [Figure 9] FIG. 1 is a cross-sectional view of a cooling device according to an embodiment. [Figure 10] 3A and 3B are diagrams for explaining the flow of a refrigerant in the cooling device according to the embodiment. [Figure 11] FIG. 2 is a diagram for explaining the arrangement of a cooling device in the laser treatment device according to the embodiment. [Figure 12] 5A and 5B are diagrams for explaining the flow of a refrigerant in the laser treatment device according to the embodiment. [Figure 13]5A and 5B are diagrams for explaining the flow of a refrigerant in the laser treatment device according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present disclosure will be described in detail with reference to the accompanying drawings. In the drawings, the same or corresponding parts are designated by the same reference numerals, and the description thereof will not be repeated.

[0010] [Configuration of laser treatment device] The main configuration of a laser treatment device 1 according to an embodiment will be described with reference to Figures 1 to 4. The laser treatment device 1 according to the embodiment is used, for example, in dental treatment to treat teeth in a patient's oral cavity. The laser treatment device 1 according to the embodiment can also be applied in fields other than dentistry, such as orthopedics, otolaryngology, surgery, urology, dermatology, and ophthalmology.

[0011] 1 and 2 are diagrams showing the appearance of a laser treatment device 1 according to an embodiment. As shown in FIGS. 1 and 2, the laser treatment device 1 includes a housing 10. The housing 10 is formed as a rectangular parallelepiped or approximately rectangular parallelepiped including a top surface 10A, a bottom surface 10B, a front surface 10C, a rear surface 10D, a right side surface 10E, and a left side surface 10F, and houses various components of the laser treatment device 1. In the following, the laser treatment device 1 will be described assuming that, when the laser treatment device 1 is installed on an installation surface, an axis along the horizontal direction of the housing 10 (the direction of the short sides of the front surface 10C and the rear surface 10D) is set as the X-axis, an axis along the vertical direction of the housing 10 (the direction of the short sides of the right side surface 10E and the left side surface 10F) is set as the Y-axis, and an axis along the height direction of the housing 10 (the direction of the long sides of the front surface 10C, the rear surface 10D, the right side surface 10E, and the left side surface 10F) is set as the Z-axis.

[0012] The laser treatment device 1 comprises a connection portion 11 , a waveguide 12 , a handpiece 13 , a holding portion 14 , a connection portion 15 , at least one leg portion 17 , a handle 18 , a display 19 , and a tray 20 .

[0013] The connecting portion 11 is provided on the upper surface 10A of the housing 10 and connects the waveguide 12 to the upper surface 10A of the housing 10. The connecting portion 11 is configured to change the length and extension direction of the waveguide 12 so that the user can move the flexible waveguide 12 to a desired position. The waveguide 12 flexibly extends and transmits the laser light transmitted from inside the housing 10 to the handpiece 13. The handpiece 13 emits the laser light transmitted via the waveguide 12 to the outside.

[0014] Holding unit 14 is provided on top surface 10A of housing 10 and is rotatable along the XY plane on top surface 10A. Holding unit 14 holds handpiece 13 at its tip, thereby fixing handpiece 13 to housing 10.

[0015] The connection portion 15 is provided on the upper surface 10A of the housing 10 and connects the waveguide 12 to the upper surface 10A of the housing 10. The cooling water supplied from inside the housing 10 is supplied to the handpiece 13 via a water channel (not shown). The handpiece 13 emits the supplied cooling water to the outside via the water channel (not shown).

[0016] At least one leg 17 is provided on the bottom surface 10B of the housing 10, creating a gap between the bottom surface 10B and the installation surface on which the housing 10 is placed. Specifically, each of the at least one leg 17 includes at least one wheel 170. The housing 10 is in contact with the installation surface via the at least one wheel 170 provided on the bottom surface 10B, and the at least one wheel 170 creates a gap between the bottom surface 10B and the installation surface.

[0017] In the laser treatment device 1 according to the embodiment, four legs 17A, 17B, 17C, and 17D are provided on the bottom surface 10B of the housing 10. Each of the four legs 17A, 17B, 17C, and 17D includes four wheels 170A, 170B, 170C, and 170D. Hereinafter, the four legs 17A, 17B, 17C, and 17D will be collectively referred to simply as "legs 17." The four wheels 170A, 170B, 170C, and 170D will be collectively referred to simply as "wheels 170." The wheels 170 rotate on the installation surface of the laser treatment device 1, allowing the laser treatment device 1 to move on the installation surface. This allows, for example, a user to move the laser treatment device 1 to a location where a patient is present when using the laser treatment device 1, and to move the laser treatment device 1 to a storage location when not using the laser treatment device 1. Note that at least one leg 17 may simply fix the housing 10 to the installation surface without including at least one wheel 170. However, in consideration of the convenience for the user to move the laser treatment device 1, it is preferable that at least one leg 17 includes at least one wheel 170.

[0018] The handle 18 is a part that the user holds when moving the laser treatment device 1. The display 19 displays various information related to the treatment of a patient using the laser treatment device 1. The tray 20 holds treatment instruments and the like that are required when the user treats a patient using the laser treatment device 1.

[0019] Fig. 3 is a diagram showing a cooling circuit 100 according to an embodiment. Fig. 4 is a block diagram of the cooling circuit 100 according to an embodiment. As shown in Figs. 3 and 4, the laser treatment device 1 includes an oscillator 40 and a cooling circuit 100 housed in a housing 10.

[0020] Oscillator 40 includes a laser rod 41 and a flash lamp 42, and generates a laser beam. Laser rod 41 is a columnar solid-state laser rod formed of YAG (Yttrium Aluminum Garnet) crystal doped with erbium ions (Er). Laser rod 41 is excited by irradiation with excitation light generated from flash lamp 42, and emits laser beam by amplifying spontaneously emitted light. Oscillator 40, which generates such Er:YAG laser beam, has a relatively large laser output per volume, so that a powerful laser output can be obtained even when a small laser rod 41 is used.

[0021] The oscillator 40 is not limited to an Er:YAG laser, but may be another YAG laser, such as an Nd:YAG laser using a YAG crystal doped with neodymium (Nd) luminescent atoms. The oscillator 40 is also not limited to a YAG laser, but may be another laser device, such as a gas laser such as a CO laser or a liquid laser. However, in order to further miniaturize the laser treatment device 1, it is preferable to use a YAG laser for the oscillator 40.

[0022] The cooling circuit 100 includes a tank 23, a pump 24, a sensor 25, a cooling device 30, cooling pipes 26A, 26B, 26C, 26D, and 26E, and a control device 50. The cooling pipe 26A connects the tank 23 and the pump 24. The cooling pipe 26B connects the pump 24 and a flash lamp 42 in the oscillator 40. The cooling pipe 26C connects the laser rod 41 in the oscillator 40 and the sensor 25. The cooling pipe 26D connects the sensor 25 and a radiator 31 in the cooling device 30. The cooling pipe 26E connects the radiator 31 in the cooling device 30 and the tank 23. Hereinafter, the cooling pipes 26A, 26B, 26C, 26D, and 26E will be collectively referred to simply as "cooling pipes 26." In the cooling circuit 100, a refrigerant for cooling the oscillator 40 flows through the cooling pipes 26. The coolant may be any medium capable of cooling the oscillator 40, such as water or oil.

[0023] The tank 23 stores a refrigerant (pure water). Although not shown, sterilized water is ejected from the handpiece 13 toward the affected area of ​​the patient.

[0024] Pump 24 draws in the refrigerant stored in tank 23 through cooling pipe 26A and discharges it to flash lamp 42 in oscillator 40 through cooling pipe 26B. Pump 24 is configured to adjust the amount of refrigerant discharged in accordance with control data from control device 50.

[0025] The sensor 25 acquires the refrigerant flowing out from the laser rod 41 in the oscillator 40 via the cooling pipe 26C and measures the temperature of the acquired refrigerant. The sensor 25 outputs data indicating the measured refrigerant temperature to the control device 50.

[0026] The cooling device 30 includes a radiator 31 connected to the cooling pipe 26D and a fan 32 that supplies air to the radiator 31. The cooling device 30 acquires the refrigerant that flows out from the sensor 25 via the cooling pipe 26D and cools the acquired refrigerant again. The specific configuration of the cooling device 30 will be described later. The refrigerant cooled by the cooling device 30 is returned to the tank 23 via the cooling pipe 26E.

[0027] The control device 50 generates control data for adjusting the flow rate of the refrigerant in the cooling circuit 100 based on the temperature of the refrigerant measured by the sensor 25, and outputs the generated control data to the pump 24.

[0028] According to the laser treatment device 1 configured as described above, a user can extend the waveguide 12 while holding the handpiece 13, thereby positioning the tip of the handpiece 13 near the affected area of ​​the patient and irradiating the affected area with the laser light emitted from the tip of the handpiece 13. This allows the user to treat the affected area using the laser light emitted by the laser treatment device 1.

[0029] When excitation light is generated from the flash lamp 42 during laser light generation, heat is generated, causing the oscillator 40 to reach a high temperature. For this reason, the laser treatment device 1 recovers the heat generated in the oscillator 40 using a refrigerant flowing through the cooling pipe 26 in the cooling circuit 100 to cool the oscillator 40. In the laser treatment device 1, the cooling device 30 performs heat exchange between the refrigerant that has recovered the heat from the oscillator 40 and air taken in from the outside using the fan 32, thereby cooling the refrigerant again and returning the cooled refrigerant to the tank 23. In this way, the laser treatment device 1 can cool the oscillator 40, which generates heat during laser light generation, by circulating the refrigerant in the cooling circuit 100.

[0030] [Cooling system configuration] The main configuration of a cooling device 30 according to an embodiment will be described with reference to FIGS. 5 to 10. FIGS. 5 and 6 are diagrams showing the external appearance of the cooling device 30 according to an embodiment. As shown in FIGS. 5 and 6, the cooling device 30 is configured such that a radiator 31 and a fan 32 are connected to each other. Specifically, the radiator 31 is formed in the shape of a rectangular parallelepiped or a substantially rectangular parallelepiped, and at least one fan 32 is stacked and disposed on one surface of the radiator 31. In the example of FIGS. 5 and 6, two fans 32 are disposed side by side adjacent to each other on one surface of the radiator 31.

[0031] The two fans 32 are each independently provided on the radiator 31. Here, FIG. 7 is a diagram showing an example of the cooling device 30 when a part of the fan 32 is removed from the radiator 31 according to the embodiment. As shown in FIG. 7, an opening 31A is formed on the surface of the radiator 31 to supply air into the inside of the radiator 31 through air drawn in by the fan 32. The fan 32 is provided on the surface of the radiator 31 so as to be in contact with the opening 31A. For example, when only one of the two fans 32 is removed from the radiator 31, the opening 31A formed on the surface of the radiator 31 appears from below the removed fan 32.

[0032] Figures 8 and 9 are diagrams showing a cross section of the cooling device 30 according to the embodiment. Figure 8 shows a cross section of the cooling device 30 when the cooling device 30 is cut along the S-S' cut line shown in Figure 6. Figure 9 shows a cross section of the cooling device 30 as seen from the front.

[0033] As shown in FIGS. 8 and 9, radiator 31 includes fins 31B and piping 31C. Fins 31B are heat dissipation plates through which air supplied by fan 32 flows via openings 31A, and are made of copper, brass, aluminum, or the like. Piping 31C is connected to cooling pipe 26, and is configured so that the refrigerant supplied via cooling pipe 26 flows through pipe 31C. Piping 31C is arranged to pass through at least one hole 31D formed in fin 31B.

[0034] In the cooling device 30 according to the embodiment, inside the radiator 31, the piping 31C is formed in multiple stages in the vertical direction (i.e., the Z-axis direction) of the bottom surface 10B of the housing 10. For example, in the example shown in FIGS. 8 and 9, the fins 31B are formed with multiple holes 31D in two stages in the Z-axis direction. The piping 31C passes through the inside of the radiator 31 via the multiple holes 31D in two stages in the Z-axis direction. This allows the piping 31C passing through the inside of the radiator 31 to be longer than if the piping 31C were formed in only one stage inside the radiator 31. Furthermore, because the piping 31C is formed in multiple stages inside the radiator 31, the radiator 31 can be made smaller. Note that, as shown in FIG. 9, the holes 31D where the piping 31C is not arranged can be used as part of the fins 31B, thereby increasing the area of ​​the fins 31B inside the radiator 31.

[0035] FIG. 10 is a diagram illustrating the flow of refrigerant in cooling device 30 according to the embodiment. As shown in FIG. 10, the refrigerant flows through pipe 31C, allowing it to pass through the inside of radiator 31 while coming into contact with fins 31B. Air supplied to radiator 31 from fan 32 hits fins 31B provided inside radiator 31, thereby lowering the surface temperature of fins 31B. Because pipe 31C through which the refrigerant flows is in contact with fins 31B, the surface temperature of fins 31B drops, thereby lowering the surface temperature of pipe 31C. As a result, the refrigerant flowing through pipe 31C exchanges heat with pipe 31C, which has been cooled by the air supplied by fan 32, and fins 31B, thereby cooling the refrigerant.

[0036] [Cooling device placement] The arrangement of the cooling device 30 according to the embodiment will be described with reference to Figures 11 to 13. Figure 11 is a diagram for explaining the arrangement of the cooling device 30 in the laser treatment device 1 according to the embodiment.

[0037] 11, in the laser treatment device 1, the radiator 31 and the fan 32 are arranged at the bottom of the housing 10. Specifically, the radiator 31 and the fan 32 are arranged inside (at the bottom) of the housing 10, stacked in the vertical direction (Z-axis direction) of the bottom surface 10B, and the fan 32 is arranged closer to the bottom surface 10B in the Z-axis direction than the radiator 31. That is, when viewed from the bottom surface 10B side (the installation surface side), the fan 32 is arranged first, and then the radiator 31.

[0038] An air intake port 21A is formed on the right side surface 10E of the housing 10, through which air is taken in from the outside to be supplied to the radiator 31 by the fan 32. An air intake port 21B is formed on the left side surface 10F of the housing 10, through which air is taken in from the outside to be supplied to the radiator 31 by the fan 32. Hereinafter, the two air intake ports 21A and 21B will be collectively referred to simply as "air intake port 21." It is sufficient that the air intake port 21 is formed on at least one of the right side surface 10E and the left side surface 10F. For example, the air intake port 21 may be formed on only one of the right side surface 10E and the left side surface 10F, or on both the right side surface 10E and the left side surface 10F.

[0039] Thus, at least one air intake port 21A, 21B is formed in each of at least one side surface 10E, 10F of housing 10, through which air is taken in from the outside to be supplied to radiator 31 by fan 32. At least one air intake port 21A, 21B includes air intake port 21A formed in right side surface 10E and air intake port 21B formed in left side surface 10F. Here, right side surface 10E is an example of a "first side surface," and left side surface 10F is an example of a "second side surface." Also, air intake port 21A is an example of a "first air intake port," and air intake port 21B is an example of a "second air intake port."

[0040] An exhaust port 22 is formed on the bottom surface 10B of the housing 10, through which air supplied to the radiator 31 by the fan 32 is discharged to the outside. Wheels 170 of the legs 17 create a gap between the portion of the exhaust port 22 on the bottom surface 10B of the housing 10 and the installation surface on which the housing 10 is installed.

[0041] Radiator 31 is in contact with an internal space provided inside housing 10 on the surface opposite (Z-axis direction side) from the surface in contact with fan 32. Specifically, an internal space is provided inside housing 10 through which air taken in from the outside by fan 32 through air intake port 21 passes.

[0042] The laser treatment device 1 further includes a heat source 60 arranged above the radiator 31 via the internal space inside the housing 10. The heat source 60 includes a power supply 70 that supplies power to the oscillator 40. For example, the power supply 70 supplies power to the flash lamp 42 for operating the flash lamp 42. For this reason, the heat source 60 including the power supply 70 is likely to become hot when the flash lamp 42 is operating.

[0043] An internal space through which air taken in from the outside by fan 32 through air inlet 21 passes is provided between radiator 31 and heat source 60.

[0044] 12 and 13 are diagrams for explaining the flow of refrigerant in the laser treatment device 1 according to the embodiment. As shown in FIGS. 11 to 13, when the fan 32 is operated, air taken in from the air inlet 21 by the fan 32 passes through the internal space. The air passing through the internal space flows in the direction toward the radiator 31, but can also flow in the direction toward the heat source 60. The heat source 60 is cooled by the supplied air.

[0045] The air supplied to the radiator 31 is drawn into the bottom surface 10B of the housing 10 along the Z-axis direction by the fan 32. Inside the radiator 31, the air hits the fins 31B, lowering the surface temperature of the fins 31B, and as a result, the temperature of the refrigerant flowing in the pipe 31C in contact with the fins 31B is also lowered. This causes the refrigerant circulating in the cooling circuit 100 to be cooled again.

[0046] The air that has passed through the radiator 31 passes through the exhaust port 22 formed in the bottom surface 10B of the housing 10, and is discharged to the outside through a gap formed between the exhaust port 22 and the installation surface.

[0047] In this way, in the laser treatment device 1, the radiator 31 and the fan 32 are disposed at the bottom of the housing 10, and therefore, for example, it is possible to ensure sufficient space for installing other components such as the power supply 70 from near the middle to the upper part of the interior of the housing 10, rather than disposing the radiator 31 and the fan 32 at the center or side of the housing 10. Furthermore, since two cooling targets (the radiator 31 and the heat source 60) exist in the internal space of one housing 10, that is, the internal space of one housing 10 can be shared by the two cooling targets (the radiator 31 and the heat source 60), it is possible to achieve a miniaturization of the laser treatment device 1. Furthermore, since one fan 32 can be used for the two cooling targets (the radiator 31 and the heat source 60), it is possible to further achieve a miniaturization of the laser treatment device 1. Furthermore, the air supplied to the radiator 31 by the fan 32 is discharged to the outside from the exhaust port 22 formed in the bottom surface 10B of the housing 10 through the gap between the bottom surface 10B and the installation surface, so that the cooling function of the refrigerant can be ensured even when the radiator 31 and the fan 32 are placed at the bottom of the housing. This allows the laser treatment device 1 to be made smaller without impairing the cooling function of the refrigerant.

[0048] Furthermore, for example, if the radiator 31 and the fan 32 are provided near the right side surface 10E or the left side surface 10F of the housing 10 and the exhaust port 22 is formed on the right side surface 10E or the left side surface 10F, the installation location of the laser treatment device 1 may result in the exhaust port 22 being blocked by a wall or an obstacle. In particular, because the laser treatment device 1 is configured to be freely moved by the user, the laser treatment device 1 may be installed near a wall, which may result in the exhaust port 22 being blocked by a wall or an obstacle. In this regard, in the laser treatment device 1 according to the embodiment, the radiator 31 and the fan 32 are disposed at the bottom of the housing 10 and the exhaust port 22 is formed on the bottom surface 10B of the housing 10. Therefore, even if the laser treatment device 1 is installed near a wall or an obstacle, the exhaust port 22 will not be blocked by a wall or an obstacle. Therefore, the user can install the laser treatment device 1 in a desired location without worrying about the installation location of the laser treatment device 1.

[0049] Furthermore, if the exhaust port 22 were formed on the right side surface 10E or the left side surface 10F, the inside of the housing 10 would be easily visible through the exhaust port 22, which would also spoil the aesthetic appearance of the laser treatment device 1. In this regard, in the laser treatment device 1 according to the embodiment, the exhaust port 22 is formed on the bottom surface 10B of the housing 10, so the inside of the housing 10 cannot be easily seen through the exhaust port 22. As a result, the aesthetic appearance of the laser treatment device 1 is not spoiled.

[0050] The fan 32 is disposed closer to the bottom surface 10B than the radiator 31 in the Z-axis direction, i.e., closer to the exhaust port 22 and the installation surface. This allows the fan 32 to more efficiently direct the air taken in through the air inlet 21 toward the exhaust port 22 via the radiator 31 than would be the case if the fan 32 were disposed closer to the heat source 60 than the radiator 31, i.e., closer to the internal space. In other words, the longer the distance between the air inlet 21 and the fan 32, the higher the air intake efficiency of the fan 32. Therefore, by disposing the radiator 31 between the air inlet 21 and the fan 32, the length of the path for the air drawn in by the fan 32 can be secured by the length of the radiator 31. Note that the fan 32 may be disposed farther from the bottom surface 10B than the radiator 31 in the Z-axis direction. However, for the reasons described above, it is preferable to dispose the fan 32 closer to the bottom surface 10B than the radiator 31 in the Z-axis direction.

[0051] Since the heavy radiator 31 is disposed at the bottom of the housing 10, the center of gravity of the laser treatment device 1 can be lowered toward the installation surface, allowing the user to move the laser treatment device 1 while maintaining stability.

[0052] Since the fan 32 is disposed at the bottom of the housing 10, the laser treatment device 1 can reduce the vibration and noise of the fan 32 during operation.

[0053] Since an exhaust port 22 is formed on the bottom surface 10B of the housing 10, the laser treatment device 1 can avoid sucking dust and other particles present in the gap between the bottom surface 10B of the housing 10 and the installation surface into the inside of the housing 10.

[0054] The embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present disclosure is defined by the claims, not by the above description, and is intended to include all modifications within the meaning and scope of the claims. Note that the configurations exemplified in the embodiments and the configurations exemplified in the modified examples can be combined as appropriate. [Explanation of symbols]

[0055] 1 laser treatment device, 10 housing, 10A top surface, 10B bottom surface, 10C front surface, 10D rear surface, 10E right side surface, 10F left side surface, 11, 15 connection portion, 12 waveguide, 13 handpiece, 14 holding portion, 17, 17A, 17B, 17C, 17D legs, 18 handle, 19 display, 20 tray, 21, 21A, 21B air inlet, 22 exhaust port, 23 tank, 24 pump, 25 sensor, 26, 26A, 26B, 26C, 26D, 26E cooling pipe, 30 cooling device, 31 radiator, 31A opening, 31B fin, 31C piping, 31D hole portion, 32 fan, 40 oscillator, 41 laser rod, 42 flash lamp, 50 control device, 60 Heat source, 70 power supply, 100 cooling circuit, 170,170A,170B,170C,170D wheels.

Claims

1. A laser treatment device for treating an affected area using laser light, an oscillator that generates laser light; a cooling pipe through which a refrigerant for cooling the oscillator flows; a radiator connected to the cooling pipe; a fan that supplies air to the radiator; a housing that houses the oscillator, the cooling pipe, the radiator, and the fan; at least one leg provided on a bottom surface of the housing to create a gap between the bottom surface and an installation surface on which the housing is installed; the radiator and the fan are disposed at the bottom of the housing; The laser treatment device, wherein the bottom surface is formed with an exhaust port for discharging the air supplied to the radiator by the fan to the outside.

2. the radiator and the fan are stacked in a vertical direction of the bottom surface inside the housing, The laser treatment device according to claim 1 , wherein the fan is disposed closer to the bottom surface than the radiator in the vertical direction.

3. The laser treatment device according to claim 1 , wherein at least one air intake port is formed on each of at least one side surfaces of the housing to take in air from the outside to be supplied to the radiator by the fan.

4. the radiator is in contact with an internal space provided inside the housing at a surface opposite to a surface in contact with the fan, The laser treatment device according to claim 3 , wherein the air taken in through the at least one air inlet is supplied to the radiator through the internal space.

5. The laser treatment device according to claim 4 , further comprising a heat source disposed inside the housing above the radiator via the internal space.

6. The laser treatment device of claim 5 , wherein the heat source includes a power supply that supplies power to the oscillator.

7. the at least one side surface includes a first side surface and a second side surface located opposite the first side surface, The laser treatment device according to claim 3 , wherein the at least one air inlet includes a first air inlet formed in the first side surface and a second air inlet formed in the second side surface.

8. The laser therapy device of claim 1 , wherein each of the at least one leg includes at least one wheel for moving the housing over the mounting surface.

9. 2. The laser treatment device according to claim 1, wherein the radiator has inside thereof pipes through which a refrigerant flows, the pipes being divided into a plurality of stages in a direction perpendicular to the bottom surface.

10. 10. The laser treatment device according to claim 1, wherein the oscillator generates laser light from an Er:YAG laser.

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