JPH11123229A - Laser beam type treatment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce variation in laser beam dose at respective points in an affected part to achieve uniform treatment effect in radiating laser beam on the whole affected part in a wide range. SOLUTION: A probe 9 of a laser beam treating device has a joint 1 provided with an actuator 7 for the joint 1 which is capable of rotary reciprocation, and a laser diode 6 is disposed at a movable part 3 of the joint 1. In radiating laser beam from a laser radiation port 5 to an affected part, a laser injecting switch 10 is pushed, and the actuator 7 for the joint 1 operates, so laser beam draws a unidimentional track in the affected part. As the probe 9 is scanned perpendicularly to it by hand, the laser beam can be radiated to the affected part in a wide range, thereby uniform treatment effect can be achieved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser light treatment device for treating an affected area under and under the skin of a human body by heating and photochemical reaction.

[0002]

2. Description of the Related Art There are many applications to medical treatment using laser light. However, a laser beam of low output is used like an acupuncture, and the affected part of nerve pain such as stiff shoulder and headache, sprain, muscle pain such as lower back pain, or By irradiating acupoints with laser light for several minutes, pain is relieved or cured. In this case, a semiconductor laser diode (hereinafter referred to as LD) having a laser light output of several mW to several tens mW is used.
Biological activation is carried out with this weak energy laser beam.

[0003] A conventional laser light treatment device using this laser light comprises a main body 101 and a probe 102 as shown in FIGS.
01 is incorporated, and the laser light is emitted from the tip hole 203. FIGS. 11A and 11B show the probe 102.
FIG. 3 is a schematic view of a tip portion of FIG. Probe 102
The laser beam from the LD 201 is focused by the lens 202 and becomes a parallel ray and emitted from the tip hole 203.

[0004] In the case of treatment using this laser beam type treatment device, the patient first takes an easy posture to easily irradiate the affected part of the patient, and the patient and the operator wear attached protective glasses as necessary. A dedicated key is inserted into the power switch of the main unit 101 to turn on the power. Further, a frequency corresponding to the treatment is set by a frequency setting button. Next, the irradiation time is set with the irradiation time setting button. Then, the user holds the probe 102 to bring the distal end hole 203 of the distal end portion close to the affected part. When the user turns on the laser emission switch, laser light is emitted from the distal end hole 203. The irradiation stops automatically after the set time, and when the irradiation is completed, the laser emission switch at hand is turned off, the probe 102 is returned to the original position, and the power switch is turned off.
After the FF, the dedicated key is extracted from the main body 101 and stored by the responsible person.

[0005] When the affected part is distributed over a wider area than the cross-sectional area of the laser beam emitted from the laser-based therapeutic device when using the laser-based therapeutic device as described above, in order to irradiate the entire affected part with laser light, The probe was manually two-dimensionally scanned so as to draw a two-dimensional trajectory.

[0006]

The conventional laser beam treatment apparatus is constructed as described above. However, when laser irradiation is performed on the entire affected area distributed over a wide range, laser beam irradiation is performed at each point of the affected area. There is a problem that the amount is easily variable and it is difficult to obtain a uniform therapeutic effect.

The present invention has been made in view of such circumstances, and when laser light irradiation is performed on the entire affected part distributed over a wide range, the laser light irradiation at each point of the affected part is made less likely to vary. It is an object of the present invention to provide a laser treatment apparatus capable of obtaining a uniform treatment effect, and a laser treatment apparatus capable of controlling an irradiation amount of a laser beam at each point of an affected part to obtain an intended treatment effect. Aim.

[0008]

According to a first aspect of the present invention, there is provided a laser beam type therapeutic device for rotating a joint and a joint provided at a fixed end or a movable end of the joint. And a laser emission port at the movable end of the joint, and the actuator of the joint is driven so that the laser beam draws a one-dimensional trajectory on the affected part.

According to a second aspect of the present invention, there is provided a laser beam type therapeutic device, wherein two joints and the joints provided at a fixed end or a movable end of each of the two joints are driven to rotate at right angles to each other. And a laser emission port provided at the movable end of the joint, and by driving the actuator of the joint, the laser light is configured to draw a two-dimensional trajectory with respect to the affected part. I do.

According to a third aspect of the present invention, there is provided a laser beam therapy apparatus comprising at least one joint, an actuator provided at a fixed end or a movable end of the joint for rotating the joint, and an operation of the movable portion. A control switch and a laser emission port provided at the movable end of the joint are provided, and the actuator of the joint is driven so that the laser light draws a zero-dimensional or one-dimensional trajectory on the affected part. It is characterized by the following.

According to a fourth aspect of the present invention, there is provided a laser beam type therapeutic device, comprising: a joint; an actuator provided at a fixed end or a movable end of the joint for rotationally driving the joint; and a laser emitting device provided at a movable end of the joint. An outlet, means for detecting the displacement or velocity of the joint movable part, and means for adjusting the laser light output in response to the displacement or velocity signal of the joint, by driving the actuator of the joint, It is characterized in that the laser light changes the laser light output with respect to the affected part in accordance with the displacement and speed of the joint.

The laser treatment apparatus of the present invention is configured as described above, and the movable end of the joint is reciprocated by an actuator so that the laser light draws a one-dimensional trajectory on the affected part. Providing two joints that can move in the perpendicular direction, the laser beam draws a two-dimensional trajectory to the affected part, and the probe at hand has a switch to control the operation of the movable part, and the laser beam Thus, a laser beam output can be changed by drawing a zero-dimensional or one-dimensional trajectory or detecting the displacement or speed of the movable part of the joint.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a laser beam type therapeutic device according to the present invention will be described with reference to FIG.

In this laser beam treatment device, a probe 9 and a main body (not shown) are connected by a cable, and the main body supplies power and a signal to the probe 9.
The joint 1 has a joint 1 actuator 7 that can rotate and reciprocate therein. The joint 1 connects the fixed part 4 of the joint 1 and the movable part 3 of the joint 1, and the movable part 3 of the joint 1 is provided with a laser diode 6. A laser emission switch 1 provided on the side surface of the probe 9 grasped by the operator's hand 11 at the end thereof
By pressing 0, a laser beam is emitted from the laser emission port 5 to the affected part.

FIG. 2 shows a state in which the affected part 12 is irradiated with a laser beam. First, the affected part 12 of the patient is placed in a comfortable position for easy irradiation, and the patient and the operator wear attached protective glasses as necessary. Insert the dedicated key into the power switch on the main unit and turn on the power. Further, a frequency corresponding to the treatment is set by a frequency setting button. Next, the irradiation time is set with the irradiation time setting button. Then, the probe 9 is held by the operator's hand 11, and the laser emission port 5 at the distal end is brought close to the diseased part 12. When the laser emission switch 10 at hand is turned on, laser light is emitted from the laser emission port 5 and the joint 1 is reciprocally rotated to automatically draw a one-dimensional scan (laser light trajectory 13) on the affected part 12. . The affected area 12
By manually scanning the probe 9 in a direction perpendicular to the probe 9 in accordance with the size of the laser beam, the entire two-dimensional diseased part 12 can be irradiated as shown in FIG. The irradiation stops automatically after the set time, and when the irradiation ends,
Turn off the laser emission switch 10 at hand and move the probe 9
Is turned off, the power switch is turned off, the dedicated key is pulled out of the main body, and the responsible person keeps it.

FIG. 4 shows another embodiment. This laser beam type therapeutic device further includes another joint 2 provided inside the probe 9 shown in FIG. 1, and the joint 2 is provided with an actuator 8 for the joint 2. It moves in a direction perpendicular to the reciprocating direction of rotation. Joint 2 is joint 1
Is the movable part 4 of the joint 2 and the fixed part 2 of the joint 2 is
It is connected to 3. Therefore, the laser emission port 5 performs two-dimensional scanning in the X direction at the joint 1 and in the Y direction at the joint 2.
FIG. 5 shows a state in which the laser emission switch 10 on the side surface of the probe 9 grasped by the operator's hand 11 is pressed and the laser beam trajectory 14 is automatically two-dimensionally scanned on the affected part 12.

FIG. 6 shows still another embodiment. This laser beam type therapeutic device is provided with another movable portion operation switch 15 on the side surface of the probe 9 shown in FIG. 1, and this movable portion operation switch 15 can switch between 0-dimensional and one-dimensional scanning at hand. When the diseased part 12 is in a minute range, local laser irradiation can be performed in a zero-dimensional manner, and laser light is not irradiated to an extra portion. When one-dimensional scanning is required, two-dimensional scanning can be performed in addition to manual scanning by switching the movable section operation switch 15.

FIG. 7 shows still another embodiment. This laser light type therapeutic device further includes a joint angle detector 17 provided on the joint 1 and a laser power adjuster 18 (not shown) provided on the main body in addition to the mechanism shown in FIG. Joint 1
Of the movable part 3 of the joint 1 of the actuator 7 is detected by a joint angle detector 17, and the angle signal 1
9 is input to a laser power controller 18 and a drive current 20 according to a certain rule of the angle signal 19 is supplied to the laser diode 6 to change the laser light output. FIG. 9 shows the control waveform. The time change 21 of the angular displacement is a (t) = Asi
n (2πT). Where A is any real number, π
Is a circle ratio, t is time, and T is a scanning cycle 24. The energy E given per unit area of the affected part 12 by the laser irradiation is expressed as E = b / V by using the laser light scanning speed V at each point of the affected part 12 and the laser light output b. Therefore, the energy given per unit area of the affected part 12 by the laser irradiation is constant, that is, when the entire part of the affected part 12 is uniformly irradiated with the laser light, the above-mentioned E is constant, so that the laser light output b is b = E × V. The scanning speed V is the time derivative of the a (t) equation of the time change 21 of the angular displacement, and there is no negative value.
= E × V equation is b (t) = | Bcos (2πt / T) |
Becomes Here, B is an arbitrary real number, π is a pi, t is time, T is a scanning cycle 24, and || is an absolute value symbol. The drive current 20 of the laser diode 6 is adjusted in synchronization with the angular displacement so that the waveform of the laser light output changes with time in accordance with the temporal change 21 of the angular displacement. It is possible to obtain an intended therapeutic effect such as making the irradiation dose uniform.

[0019]

The laser beam treatment apparatus of the present invention is configured as described above, and when the laser beam emitted from the laser exit 5 is irradiated on the diseased part 12, the diseased part 12 having a two-dimensional spread is obtained. The two-dimensional diseased part 12 can be evenly illuminated only by manually performing one-dimensional scanning with the probe 9 in the first step. Also, 0
In the one in which the switching between the two-dimensional and one-dimensional scanning can be easily performed by the movable part operation switch 15 at hand, when the affected part 12 is in a minute range, local laser irradiation is possible, and the laser light is applied to an extra part. There is no irradiation. In addition, if the probe 9 having two movable parts is used, the laser beam automatically draws a two-dimensional trajectory on the affected part 12, so that the entire affected part 12 distributed over a wide range can be irradiated with the laser. In the one-dimensional scanning type having a function of detecting the displacement amount or speed of the movable portion in the probe 9, the laser light output emitted from the laser emission port 5 is irradiated with an arbitrary intensity depending on the scanning displacement or speed. And the intended therapeutic effect can be obtained.

As described above, the use of the laser beam treatment device of the present invention makes it possible to reduce the variation in the amount of laser beam irradiation at each point of the affected area 12 as compared with the conventional manual two-dimensional scanning. A uniform therapeutic effect can be obtained.

[Brief description of the drawings]

FIG. 1 is a view showing one embodiment of a laser beam type treatment device of the present invention.

FIG. 2 is a diagram in which laser light is one-dimensionally irradiated by the laser light type treatment device of FIG.

FIG. 3 is a diagram in which a probe is manually moved right and left by the laser beam type therapeutic device of FIG. 1 to perform two-dimensional irradiation.

FIG. 4 is a view showing another embodiment of the laser beam treatment device of the present invention.

5 is a diagram in which laser light is two-dimensionally irradiated by the laser light type treatment device of FIG. 4;

FIG. 6 is a view showing another embodiment of the laser beam treatment device of the present invention.

FIG. 7 is a view showing another embodiment of the laser beam type treatment device of the present invention.

FIG. 8 is a diagram showing a control block of the laser beam treatment device of FIG. 7;

FIG. 9 is a diagram showing control waveforms of the laser beam type therapeutic device of FIG. 7;

FIG. 10 is a view showing a conventional laser beam treatment device.

FIG. 11 is a view showing a tip of a probe of a conventional laser beam treatment device.

[Explanation of symbols]

 Reference Signs List 1 joint 2 joint 3 movable part of joint 1 4 fixed part of joint 1 (movable part of joint 2) 5 laser emission port 6 laser diode 7 actuator for joint 1 8 actuator for joint 2 9 probe 10 laser emission switch 11 operator hand

Claims (4)

[Claims] A joint, an actuator provided at a fixed end or a movable end of the joint for driving the joint to rotate, and a laser emission port at the movable end of the joint, the actuator of the joint is driven. A laser beam treatment device characterized in that the laser beam forms a one-dimensional trajectory with respect to the affected part. 2. Two joints, an actuator provided at a fixed end or a movable end of each of the two joints, for driving the joints to rotate at right angles to each other, and an actuator provided at a movable end of the joint. And a laser emission port, wherein the laser light draws a two-dimensional trajectory with respect to the affected part by driving an actuator of the joint. 3. An at least one joint, an actuator provided at a fixed end or a movable end of the joint for rotating the joint, a switch for controlling the operation of the movable part, and a movable end of the joint. And a laser emission port provided, wherein the laser light draws a zero-dimensional or one-dimensional trajectory on the affected part by driving an actuator of the joint. . 4. A joint, an actuator provided at a fixed end or a movable end of the joint for rotationally driving the joint, a laser emission port provided at a movable end of the joint, a displacement amount of the joint movable portion, A means for detecting a velocity, and a means for adjusting a laser light output in response to a displacement amount or a velocity signal of the joint, and driving an actuator of the joint so that the laser light is displaced relative to the affected part by the laser light. A laser light treatment device characterized in that the laser light output is changed according to the speed and the speed.