KR20200120575A - A light treatment apparatus - Google Patents

Abstract

The present invention relates to a phototherapeutic apparatus to transfer a proper amount of therapeutic energy to a treatment position and a control method thereof. According to the present invention, the phototherapeutic apparatus comprises: a therapeutic light emission unit emitting therapeutic light to a treatment portion a plurality of times while moving on the upper side of the treatment portion; a detection unit detecting movement information of the therapeutic light emission unit; and a control unit controlling an emission pattern of the therapeutic light based on the detected movement information to overlap at least a part of an emission area of the therapeutic light emitted from the therapeutic light emission unit with an emission area of the previous therapeutic light.

Description

Light therapy device {A LIGHT TREATMENT APPARATUS}

The present invention relates to a phototherapy apparatus and a control method thereof, and more particularly, to a phototherapy apparatus and a control method thereof for irradiating treatment light to a plurality of positions while moving over a treatment area.

BACKGROUND ART In recent years, a technique of delivering therapeutic energy to human tissues to transform or remove the state of human tissues has been widely applied. Accordingly, treatment devices using various types of electromagnetic waves such as laser beams, flash lamps, radio frequency waves, microwaves, and ultrasounds have been developed.

In particular, devices for irradiating light as therapeutic energy are widely used in treatment devices for treating skin lesions, and such devices are also disclosed in Korean Patent Publication No. 10-1269970. When the skin tissue is irradiated with light, light having a specific wavelength penetrates into the skin and is absorbed by various tissues such as collagen, hair follicle, and hemoglobin located inside the skin according to the wavelength characteristics. Then, the absorbed light is converted into thermal energy in the tissue, and the treatment is performed while changing the state of the tissue by applying thermal damage to the tissue.

Such a light treatment apparatus is generally configured to include a handpiece, and a user performs treatment by irradiating treatment light multiple times while moving the handpiece on a treatment site. The amount of energy delivered to the treatment site varies depending on the irradiation distribution of the treatment light, thereby determining the treatment effect.

In the conventional phototherapy apparatus, while the handpiece is moving, the treatment light is irradiated at a predetermined cycle or by a user's firing operation. Therefore, when the moving speed of the handpiece is not constant, it is difficult to treat uniformly, and there is a problem that the treatment effect appears differently depending on the skill level of the user.

Registered Patent Publication No. 10-1269970

An object of the present invention is to provide a phototherapy apparatus capable of delivering a suitable amount of therapeutic energy to a treatment location without being significantly affected by the movement speed of a handpiece or the skill level of a user, and a control method thereof.

In order to achieve the above object of the present invention, the present invention is a treatment light irradiation unit for irradiating a plurality of times of treatment light to the treatment area while moving above the treatment area, a sensing unit for detecting movement information of the treatment light irradiation unit, and the treatment It provides a light treatment apparatus comprising a control unit for controlling the irradiation pattern of the treatment light based on the sensed movement information so that the irradiation area of the treatment light irradiated by the light irradiation unit overlaps at least a part of the irradiation area of the previously irradiated treatment light.

The control unit may adjust the irradiation timing of the treatment light based on the movement information detected by the detection unit.

Specifically, the control unit controls to sequentially irradiate the treatment light a plurality of times, but when it is detected that the treatment light irradiation unit has moved by a preset distance after the treatment light has been irradiated previously, it may control to irradiate the next treatment light.

Alternatively, if the movement speed of the treatment light irradiation unit moves faster than the reference movement speed, the irradiation time point of the treatment light is controlled faster than the reference period, and when the movement speed of the treatment light irradiation unit is slower than the reference movement speed, the irradiation time point of the treatment light is referenced. It can be controlled to be irradiated with a delay rather than the period.

Here, the controller may control the irradiation pattern of the treatment light so that the irradiation areas of the two treatment lights irradiated adjacent to the treatment area overlap at a preset ratio.

The irradiation area is formed in the shape of a circular spot having a predetermined diameter on the treatment area, and the overlapping preset ratio may be 10% to 25% based on the diameter of the irradiation area.

Furthermore, the phototherapy apparatus may further include a setting unit for setting a ratio at which the irradiation areas of two treatment lights irradiated adjacent to the treatment area overlap. The setting unit may provide a plurality of overlapping ratio options so that the user can select the overlapping ratio. In addition, the controller may control the irradiation pattern of the treatment light so that the treatment light irradiated adjacent to each other is overlapped at an overlapping magnification selected by the user.

The object of the present invention is to irradiate a first treatment light onto a treatment site by operating a treatment light irradiation unit, sensing a distance a handpiece moves from a position to which the first treatment light is irradiated, and the detection It may also be achieved by a control method of a light treatment device comprising the step of irradiating the second treatment light so that at least a part of the region irradiated with the first treatment light overlaps based on the moved distance.

Here, in the irradiating of the second treatment light, the second treatment light may be irradiated so that the irradiation area of the second treatment light overlaps the irradiation area of the first treatment light at a predetermined ratio. Specifically, in the irradiating step of the second treatment light, when it is sensed that the handpiece has moved by a preset distance, the second treatment light may be irradiated.

The first treatment light and the second treatment light are irradiated in the form of a circular spot having a predetermined diameter on the treatment area, and in the step of irradiating the second treatment light, the irradiation area of the second treatment light is the irradiation area of the first treatment light The overlapping ratio may be overlapped by a distance of 10% to 25% of the diameter.

Further, the control method of the phototherapy apparatus may further include a setting step of setting a ratio at which the irradiation area of the first treatment light and the irradiation area of the second treatment light overlap. In addition, in the second treatment light irradiation step, the irradiation area of the second treatment light may be irradiated to overlap the irradiation area of the first treatment light based on an overlap ratio set in the setting step.

According to the present invention, since the treatment light is irradiated in consideration of information on which the handpiece moves, there is an advantage that uniform treatment is possible.

In addition, since the treatment light that is irradiated adjacent to each other is irradiated by overlapping at a preset ratio, it is possible to minimize the area where the treatment is not performed.

Furthermore, since it is configured to set the overlapping ratio of adjacent treatment lights, there is an advantage in that treatment of various intensities can be performed by adjusting the overlapping ratio even when light having the same parameter is used.

1 is a view showing a phototherapy apparatus according to an embodiment of the present invention;
2 is a block diagram schematically showing the main configuration of FIG. 1;
3 is a diagram showing an example of an irradiation pattern of treatment light during treatment;
FIG. 4 is a diagram showing a form in which treatment light irradiated by the light treatment device of FIG. 1 is overlapped and irradiated;
5 is a diagram showing a heat distribution in a tissue when the treatment light is irradiated with overlapping in FIG. 4;
6 is a view showing an example in which treatment light irradiated by the light treatment device of FIG. 1 is irradiated to a treatment area;
7 is a diagram showing a state of irradiation areas of treatment light overlapping at two different overlapping ratios;
FIG. 8 is a diagram showing a state in which treatment lights having different spot sizes are overlapped and irradiated,
9 is a flow chart illustrating a method of controlling the phototherapy apparatus of FIG. 1.

Hereinafter, a phototherapy apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings. In the following description, the positional relationship of each component will be described based on the drawings in principle. The drawings may simplify the structure of the invention for convenience of explanation or may be exaggerated if necessary. Therefore, the present invention is not limited thereto, and it goes without saying that various devices may be added, changed, or omitted.

Hereinafter, the term'phototherapy device' includes all phototherapy devices for treating mammals, including humans. That is, the phototherapy device includes various phototherapy devices used for the purpose of improving the condition of a lesion or tissue. In this embodiment, a configuration using a laser as a treatment light is mainly described, but the present invention is not limited thereto, and may be configured using various types of light sources.

Hereinafter, the term'treatment site' refers to a tissue that needs treatment among various body organs of mammals including humans. Hereinafter, a phototherapy device using a skin tissue as a treatment site will be described, but is limited thereto. It is not.

Hereinafter, a phototherapy apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

1 is a perspective view showing a phototherapy apparatus according to an embodiment of the present invention. As shown in FIG. 1, the phototherapy apparatus according to the present embodiment includes a main body 10, a handpiece 20, and a connection part 30 connecting the same.

The main body 10 forms the main skeleton of the phototherapy device, and various components are installed therein. The interior of the body 10 may be provided with a treatment light generating unit 110 for generating treatment light and various optical devices for transmitting the same. A control panel 11 for manipulating the treatment device or setting operation contents and a display 12 for displaying various types of information to the user may be installed on the outer surface of the main body 10.

The handpiece 20 is configured in a shape that can be held by the user by hand. The user performs the treatment while changing the treatment position while holding the handpiece 20 in his hand. The handpiece 20 includes a treatment light irradiation unit 210 that irradiates the treatment light generated by the treatment light generation unit 110 to a treatment area. An operation unit 220 for controlling the operation of the handpiece is provided on the outer surface of the handpiece 20. In addition, a sensor (not shown) for detecting various types of information may be installed on the handpiece during treatment.

The connection part 30 is a component that connects the body 10 and the handpiece 20 described above. In the interior of the connection part 30, a light transmission part 310 forming an optical path from the treatment light generation part 110 of the main body 10 to the treatment light irradiation part 210 of the handpiece 20, and the main body 10 It may be configured to include a signal line 320 for transmitting various control signals generated from the control unit 120 of the handpiece 20 or the operation unit 220 of the handpiece 20.

2 is a block diagram schematically showing the main configuration of FIG. 1. Hereinafter, each configuration of FIG. 1 will be described in more detail with reference to FIG. 2.

As shown in FIG. 2, a treatment light generator 110 is provided inside the main body 10. As described above, the treatment light generator 110 is configured to generate treatment light. The treatment light generator 110 may use a type of light source according to the characteristics of the treatment device. In this embodiment, a laser medium capable of oscillating a laser and a resonator are included. However, in addition to this, various light sources such as LED, LD, and flash lamp may be used depending on the purpose of the treatment device.

More specifically, the treatment light generating unit 110 of the present embodiment may use Nd (YAG) or Alexandrite as a laser medium. Therefore, the treatment light generated by the treatment light generator 110 may be a laser having a wavelength in the range of 1060nm to 1070nm (Nd:YAG) or a wavelength in the range of 750nm to 760nm (Alexandrite), and more specifically, about 1064nm It may be composed of a laser having a wavelength or a laser having a wavelength of approximately 755 nm. However, the phototherapy apparatus according to the present embodiment is for treating skin rejuvenation or pigmented lesions, and a wavelength effective for the treatment is selected, and in addition to this, it is possible to use a laser medium generating other wavelengths. .

Various optical elements for processing and transmitting the treatment light are disposed on one side of the treatment light generator 110. The treatment light passing through such an optical element is transmitted to the treatment light irradiation part 210 of the handpiece 20 through the light transmission part 310 of the connection part 30. Here, the light transmitting unit 310 may be composed of at least one optical fiber, or may be composed of a light transmitting structure including a plurality of relay lenses. The treatment light irradiation unit 210 is configured to include various optical elements including lenses, and focuses the treatment light transmitted from the light transmission unit 310 or processes the treatment light into a preset spot size to irradiate the treatment area.

However, in the present embodiment, the treatment light generating unit 110 is provided in the main body 10, but this is an example, and the treatment light generating unit may be provided in the handpiece itself. In this case, the light transmission part of the connection part may be omitted, and the treatment light irradiation part of the handpiece itself may be configured to include a light source and an optical element.

Meanwhile, the controller 120 is a component that controls each component of the phototherapy apparatus. The control unit 120 controls the operation of the phototherapy device according to the contents set by the user through the control panel 11, the contents operated by the user through the operation unit 220 of the handpiece 20, or stored in its own memory. Can be controlled.

As an example, the control unit 120 controls the treatment light generator 110 and an optical element disposed on the light path to control a parameter or irradiation pattern of the treatment light. Specifically, by controlling an operation of a flash lamp or shutter that excites the laser, it is possible to control the irradiation timing of the treatment light, the duration of the treatment light, and the output. Alternatively, a movable lens or the like that forms an optical path may be controlled to adjust the spot size of the treatment light.

Further, in addition to the treatment light, the control unit 120 may control display contents, operation of the cooling unit, etc. when a cooling unit is provided, or variously control treatment contents based on the information detected by a detection unit to be described later. .

3 is a diagram illustrating an example of an irradiation pattern of treatment light during treatment. The treatment light irradiated through the handpiece 20 may be composed of a light pulse having a predetermined pulse width (P _w ). However, such an optical pulse may be composed of a single pulse, but may be composed of a set of a plurality of unit pulses. As shown in Fig. 3, the treatment light is irradiated multiple times during the treatment. The plurality of treatment lights are sequentially irradiated at time intervals, and an off time (t _o ) exists between the time points at which each treatment light is irradiated.

In general, treatment using such an optical treatment device is performed in a manner in which a plurality of treatment lights are irradiated to the treatment site while the user moves the handpiece onto the treatment site. In this way, since treatment is performed while the handpiece moves, when the treatment light is irradiated at the same time period, the distribution of the treatment light irradiated to the treatment area may be different according to the moving speed of the handpiece. In this case, when the user moves the handpiece quickly, the plurality of treatment lights are irradiated at wide intervals, and when the handpiece slowly moves, the plurality of treatment lights are irradiated at narrow intervals. Accordingly, the treatment intensity may be different depending on the user, and even the same user may have different treatment intensity depending on the location.

Accordingly, the present embodiment further includes a sensing unit 230 for sensing movement information of the handpiece, and is configured to control the treatment light irradiation pattern based on the movement information detected from the sensing unit 230. . For this reason, it is possible to evenly treat the treatment area without being affected by the moving speed of the handpiece.

Again, referring to FIG. 2, the above-described sensing unit 230 is provided in the handpiece, and is configured to detect movement information of the handpiece in real time. The sensing unit 230 may be configured using sensors such as a distance sensor, a speed sensor, and a gyro sensor. The movement information of the handpiece sensed by the sensing unit 230 is transmitted to the control unit 120, and the control unit 120 controls the irradiation pattern of the treatment light based on the movement information.

As an example, the sensing unit 230 is configured to detect the moving distance of the handpiece. Accordingly, the sensing unit 230 may measure the moving distance of the handpiece from the time when the treatment light is irradiated or the time when the treatment light radiation is completed, and determine the time when the next treatment light is irradiated based on the moved distance. In this case, the plurality of treatment lights sequentially irradiated may be controlled to be irradiated after moving by a predetermined interval from the irradiation area of the previously irradiated treatment light.

As another example, the sensing unit 230 may be configured to detect the moving speed of the handpiece. For example, the light therapy device controls to irradiate the treatment light at a preset period within the range in which the handpiece moves at a preset reference movement speed, but when the movement speed of the handpiece deviates from the reference movement speed, the treatment light is irradiated in consideration of this. It can be controlled to adjust the cycle. If the detected movement speed of the handpiece is faster than a preset reference movement speed, the control unit 120 may adjust the irradiation timing of the next treatment light faster than the reference period. Conversely, when the movement speed is slower than a preset reference movement speed, the control unit 120 may adjust the irradiation timing of the next treatment light later than the reference period.

Furthermore, the sensing unit 230 is configured to detect the movement direction of the handpiece, and the control unit 120 is configured to detect the movement direction of the handpiece when the detected movement direction is reversely changed, the treatment light is again applied to the previously irradiated treatment area. It is also possible to control to stop irradiation of the treatment light so as to prevent irradiation.

As such, the sensing unit 230 may select and apply one of various sensors that measure information necessary to determine moving distance information such as distance, speed, and acceleration. In addition, the content of the control unit 120 controlling the irradiation pattern of the treatment light based on the sensed information may be described in various viewpoints, such as an irradiation period of the treatment light, an off time between treatment lights, and an irradiation time point of the treatment light. As described above, it should be noted that the technique of controlling a plurality of treatment lights to be irradiated at uniform intervals based on movement information of the handpiece sensed by the sensing unit can be modified and implemented in various ways.

FIG. 4 is a diagram illustrating a form in which treatment light irradiated by the light treatment device of FIG. 1 is overlapped and irradiated. Here, the irradiation area S of the treatment light is an area to which the corresponding treatment light is irradiated on the surface of the treatment site, and is meant to correspond to a spot on the treatment light formed on the surface of the treatment site. The treatment light according to the present embodiment is irradiated in a shape having a circular cross section, and has a spot-shaped irradiation area having a predetermined diameter D.

In addition, as shown in FIG. 4, the controller 120 may control a plurality of sequentially irradiated treatment lights to be irradiated in an overlapping form. That is, when N-th treatment light is irradiated during treatment, the irradiation area of the n-th treatment light may overlap at least part of the irradiation area of the n-1th treatment light that has been previously irradiated. In this way, in the case of overlapping irradiation, it is possible to minimize the area where the treatment light is not irradiated on the treatment area where the handpiece 20 moves.

In addition, as shown in FIG. 4, when irradiated so that a part of the edge of the treatment light overlaps, there is an advantage of compensating for a deviation according to the intensity distribution of the treatment light. As for the intensity of the treatment light, since the intensity of the center portion based on the cross-section of the treatment light is relatively large and becomes relatively weak toward the edge, it is possible to compensate for this by overlapping and irradiating the edge of the irradiated area.

Furthermore, when the treatment light is irradiated with overlapping treatment as described above, there is also an advantage of compensating for a deviation according to the spatial heat distribution of the tissue that absorbs the energy of the treatment light. 5 is a diagram showing a heat distribution within a tissue when the treatment light is irradiated with overlapping in FIG. 4. When the irradiated treatment light is absorbed into the treatment area, the absorbed heat is diffused inside the tissue, and as shown in FIG. 5, the treatment light is transferred to a sufficient depth in the center, while the heat is transferred to a sufficient depth in the edge. No heat is transferred. In this case, even when the intensity distribution according to the cross-section of the treatment light is the same, it shows a similar distribution due to the heat diffusion characteristic. Therefore, as shown in FIG. 4, when a part of the edge is overlapped and irradiated, energy is superimposedly transferred to the treatment area for the edge of the treatment light, so that heat is transferred to a sufficient depth to absorb energy, and the spatial heat distribution deviation of the tissue Can compensate.

The phototherapy apparatus according to the present embodiment irradiates the treatment light so that the irradiation areas of two adjacent treatment lights overlap at a ratio of a preset value or range. As described above, since the sensing unit 230 detects movement information of the handpiece in real time, the control unit 120 can control the ratio at which the irradiation areas of two treatment lights that are adjacent to each other in time overlap based on this. .

Here, the ratio (r) at which the irradiation areas of the two treatment lights overlap is described as the ratio of the diameter (D) of the irradiation area of each treatment light and the length (d) of the overlapping portion of the line connecting the center of the overlapped irradiation area. can do. The overlapping ratio of the two treatment lights may be a ratio included in the range of 50% or less. As an example, the overlapping ratio in the present embodiment may be a ratio included in the range of 10% to 25%. More specifically, it may be a ratio included in the range of 15% to 22%.

6 is a diagram illustrating an example in which treatment light irradiated by the light treatment device of FIG. 1 is irradiated to a treatment area. As shown in FIG. 6, according to the present embodiment, while the edges of each treatment light irradiation area S overlap, it is possible to minimize the area where the treatment light is not irradiated in the direction in which the handpiece proceeds. have. Further, even when the handpiece is irradiated in a plurality of rows on the treatment area, as shown in FIG. 6, the first irradiated row and the edge portion are irradiated so as to overlap, so that the area where the treatment light is not irradiated between each row is It is possible to minimize the treatment. In FIG. 6, each irradiation area arranged in one row shows a pattern irradiated in a form intersecting with each irradiation area arranged in an adjacent row. However, the present invention is not limited thereto, and may be investigated in various patterns other than this.

Referring again to FIG. 2, the optical treatment apparatus according to the present embodiment further includes a setting unit 130, and a user may select the overlapping ratio of the treatment light described above through the setting unit 130. The setting unit 130 may be configured to include the control panel 11 or the display 12 installed on the outer surface of the body described above, and may be configured in various structures in addition to this.

For example, the setting unit 130 may provide various options of an overlap ratio that the user can select, and configure the user to select them. For example, the setting unit 130 provides options of 0%, 10%, 20%, 30%, and 40% through the display 12, and the user can select and select them. Here, the 0% mode does not mean all states in which the two treatment lights do not overlap, but means that the two treatment light irradiation areas are irradiated at a contact interval. In this case, the irradiation area of the two treatment lights does not overlap on the surface of the treatment site, but the effect of overlapping substantially inside the tissue due to heat diffusion can be seen. Meanwhile, the overlapping ratio set by the user is transmitted to the control unit, and the irradiation area of the adjacent treatment light may be controlled to overlap at the set overlapping ratio while the treatment is being performed.

For example, when the control unit detects that the n-1th treatment light has moved by a reference distance from the irradiation point, the nth treatment light is irradiated, and if the set overlap rate is relatively small, the treatment light is irradiated. When the reference distance between the viewpoints is set to be wider and the set overlapping rate is relatively high, the reference distance between the viewpoints of irradiating the treatment light may be set to be narrower. For reference, the reference distance (the distance the treatment light irradiator moves between the irradiation time points of two adjacent treatment lights) can be derived as follows: (while the treatment light is irradiated, that is, corresponding to the treatment light pulse width) It moves on time as well, but this can be neglected if it is significantly smaller compared to the off time)

Dr= D-D×r (Dr: reference distance, D: spot diameter, r: set overlap rate)

7 is a diagram showing a state of an irradiation area of treatment light overlapping with two different overlapping ratios. 7A shows a state of the treatment light irradiated with an overlap ratio of 20%, and FIG. 7B shows a state of the treatment light irradiated with an overlap ratio of 40%. As shown in FIG. 7, when the overlapping ratio is low, the intensity of the treatment light irradiated to the treatment area is relatively low, and when the overlapping ratio is high, the intensity of the treatment light that is irradiated to the treatment area is relatively high. Therefore, according to the present embodiment, since the overlapping ratio is set differently, the treatment intensity of the treatment area can be adjusted even when the output of the treatment light or the spot size is not adjusted.

In addition, FIG. 8 is a diagram showing a state in which treatment lights having different spot sizes are overlapped and irradiated. The above-described setting unit 130 may be configured to adjust the spot size of the treatment light. In this case, the narrowly formed treatment area can be easily treated. However, when the spot size of the treatment light generated from the same light source is adjusted, the intensity of the treatment light transmitted per unit area to the treatment area changes. If the spot size of the treatment light generated from the same light source is adjusted to be small, the intensity of the treatment light irradiated to the irradiation area is relatively increased, and if the spot size is increased, the intensity of the treatment light is relatively decreased. Accordingly, in this embodiment, by adjusting the overlapping ratio, it is possible to compensate for the difference in the intensity of the treatment light according to the change in the spot size.

That is, even if the spot size is changed, if the treatment is to be performed at the same treatment intensity in the treatment area, the controller 120 may adjust the overlapping ratio differently according to the spot size. For example, when the spot size is adjusted to be small, the controller may control the overlapping ratio to decrease as well, and when the spot size is adjusted to be large, the controller may control the overlapping ratio to increase as well.

9 is a flow chart illustrating a method of controlling the phototherapy apparatus of FIG. 1. Hereinafter, a control method of the above-described phototherapy apparatus will be described in detail with reference to FIG. 9.

First, prior to proceeding with the treatment, it includes the step of setting the treatment content (S10). In this step, various parameters for treatment contents may be set, including a treatment mode. For example, it is possible to set the intensity of the treatment light, the spot size, and the overlap ratio when irradiating the treatment light. Therefore, the user sets the appropriate treatment contents in consideration of the treatment site and lesion.

When the above-described setting step is completed, the user may start the treatment after placing the handpiece 20 on the skin, which is a treatment area. As an example, treatment is performed by irradiating treatment light at predetermined intervals while moving the handpiece.

First, a step of irradiating a first treatment light onto a treatment site is performed (S20). This step is performed in such a way that the control unit 120 generates the treatment light by controlling the operation of the treatment light generator or the treatment light irradiation unit, and the generated treatment light is irradiated to the treatment area through the end of the handpiece. Here, the first treatment light may be a first treatment light that is irradiated during treatment, or may be a treatment light selected at an arbitrary point of time among a plurality of treatment lights that are irradiated during treatment. The first treatment light is irradiated to have an irradiation area of a circular spot having a diameter of D on the treatment site, and is turned off after being irradiated for a time corresponding to the pulse width of the treatment light.

When the first treatment light is irradiated, the sensing unit performs a step of detecting movement information of the handpiece (S30). The movement information of the handpiece is detected by the sensing unit, and the movement information detected by the sensing unit includes a movement distance. An operation of detecting such a movement distance by the sensing unit may be performed continuously from the time when the treatment is started during the treatment. However, in FIG. 9, this step is shown to be performed after the irradiation step of the first treatment light, by measuring the moving distance from the time when the first treatment light is irradiated (or after the end of the irradiation of the first treatment light) It can mean doing.

When the first treatment light is irradiated, the controller 120 senses the moving distance of the handpiece 20 and controls the second treatment light to be irradiated at a preset overlapping ratio. When the overlapping ratio is set in the previous setting step, a reference distance corresponding to the overlapping ratio is determined. (In this embodiment, the reference distance is set based on the moving distance between the irradiation time points (P _w + t _o ) of two treatment lights that are sequentially irradiated, but the moving distance between the off time (t _o ) between the two treatment lights is However, if the pulse width is significantly short compared to the off time, the above two distinctions may not be of practical benefit.) Therefore, the control unit 120 performs the movement information detection step to the handpiece as much as the reference distance. When it is detected that is moved, the second treatment light is irradiated by controlling the treatment light generation unit or the treatment light irradiation unit (S40). Accordingly, it is possible to irradiate the two treatment lights that are adjacent to each other in time and irradiate them by being irradiated at a set overlapping ratio while being irradiated in a state spaced apart by the reference distance.

On the other hand, when the second treatment light is irradiated, the step of irradiating the third treatment light while performing the movement information sensing step (S50) of measuring the moving distance from the point when the second treatment light is irradiated is performed as in S30. Do (S60). Then, by repeating these steps, the treatment light may be irradiated up to the Nth treatment light.

However, in the flowchart of FIG. 9, the two movement information detection steps are shown as separate steps, but as described above, the movement information detection step may be one step continuously progressing while the treatment is being irradiated. It should be noted that it can proceed in parallel with the treatment light irradiation step.

As described above, according to the present invention, it is possible to control the irradiation pattern of the treatment light in consideration of the movement information of the handpiece, so that the deviation of the treatment intensity according to the characteristics of the user and the treatment location can be minimized, and uniform treatment can be performed. It is possible to proceed.

Further, as the sequentially irradiated treatment light is irradiated so as to overlap each other, the treatment area not irradiated with the treatment light can be minimized, and the deviation according to the spatial heat distribution of the tissue absorbing the energy of the treatment light and the cross section of the treatment light It is also possible to compensate for the intensity deviation according to the position, and it is also possible to adjust the treatment intensity without changing the output of the treatment light by adjusting the overlap ratio and spot size.

In the above, although one embodiment of the present invention has been described in detail, the present invention is not limited to the above embodiment. It has been found that those of ordinary skill in the technical field to which the present invention belongs can perform various modifications or changes to the present invention without departing from the scope of the technical features of the present invention defined in the appended claims. Put.

10: main body 20: handpiece
30: connection part 130: setting part
120: control unit 230: detection unit

Claims (6)

A treatment light irradiation unit for irradiating a plurality of treatment light onto the treatment site while moving above the treatment site;
A sensing unit for sensing movement information of the treatment light irradiation unit; And
And a control unit for controlling the irradiation pattern of the treatment light based on the sensed movement information so that the irradiation area of the treatment light irradiated by the treatment light irradiation unit overlaps at least a part of the irradiation area of the previously irradiated treatment light, and
The control unit controls the irradiation timing of the treatment light so that the irradiation areas of two adjacent treatment lights overlap at a preset ratio,
The irradiation area is formed in the shape of a circular spot having a predetermined diameter on the treatment area, and the intensity of the treatment light is relatively large at the center of the cross-section than the edge, and can compensate for a deviation according to the intensity distribution of the treatment light. So that the overlapping preset ratio is 10% to 25% based on the diameter of the irradiation area,
The control unit controls to stop irradiation of the treatment light when the direction in which the treatment light irradiation unit moves is reversed,
The distance (Dr) that the treatment light irradiation unit moves between the irradiation time points of two adjacent treatment lights is,
Dr= D-D×r (D: cross-sectional diameter of the treatment light, r: set overlap rate)
Phototherapy device, characterized in that. The method of claim 1,
The control unit is a phototherapy apparatus, characterized in that to adjust the irradiation time of the treatment light based on the movement information sensed by the sensing unit. The method of claim 1,
The control unit controls the treatment light to be sequentially irradiated, but controls to irradiate the next treatment light when it is sensed that the treatment light irradiation unit has moved by a preset distance after the treatment light is previously irradiated. The method of claim 1,
When the moving speed of the treatment light irradiation unit moves faster than the reference movement speed, the control unit controls the irradiation point of the treatment light faster than the reference period, and when the movement speed of the treatment light irradiation unit moves slower than the reference movement speed, the treatment light is A phototherapy apparatus, characterized in that the irradiation is performed by delaying the irradiation time point than the reference period. The method of claim 1,
The phototherapy apparatus further comprises a setting unit for setting a ratio at which the irradiation areas of two treatment lights irradiated adjacent to the treatment area overlap. The method of claim 5,
The setting unit provides a plurality of overlapping ratio options so that the user can select the overlapping ratio,
The control unit controls the irradiation pattern of the treatment light so that the treatment light irradiated adjacent to each other is overlapped at an overlapping magnification selected by the user.

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