JPH04212340A - Laser treating device - Google Patents

Abstract

PURPOSE:To facilitate the positioning of a hand piece by providing a guide light source which projects light for guiding in the laser beam incident side face position on a kaleidoscope. CONSTITUTION:The end face 14 of a transparent planar body 13 is pressed to the affected part of a living body. Since the transparent planar body 13 is contaminated when irradiated with the laser beam, this body is made into the structure to allow the manual free attachment and detachment thereof to and from a transparent cylindrical body 12 and is used with exchange. The guide light source 30 is mounted at the other end of holders 15a, 15b in the position deviated from the optical axis of the kaleidoscope 7. The uniformization of the light intensity distribution is executed while the laser beam falls onto the walls of four sides and repeats total reflection at the time when the laser beam is made incident on the kaleidoscope 7 having a transparent square shape from one end thereof and is progressed therein.

Description

[Detailed description of the invention]

[Purpose of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser treatment device for plastic surgery or dermatology. More specifically, laser light with an appropriate amount of energy is irradiated to so-called colored nevi, such as abnormal blood vessel groups and abnormal pigment groups, to remove and remove the nevus.
The present invention relates to a laser treatment device for plastic surgery or dermatology that has a handpiece for performing treatment.

0002

BACKGROUND OF THE INVENTION Conventionally, treatments for birthmarks have been approached from several fields such as surgery, dermatology, and radiology. Surgical treatments include excision and suturing, skin grafting, and epidermolysis; dermatological treatments include drug therapy, dry ice therapy, and electrolysis; radiation treatments include: The main treatments include radium therapy, cobalt therapy, and strontium therapy. All of these treatments are less effective compared to the size of the invasion, the treatment itself causes pain to the patient, and there is a need for hospitalization.
Furthermore, there are drawbacks such as a long treatment period, and there has been a desire to improve the treatment method.

[0003] In recent years, histological research on nevi has progressed, and the elucidation of nevi is gradually becoming clearer. Pigmented abnormal cells, such as so-called red birthmarks, generally have lower brightness than normal cells, and absorb visible light more strongly than cells with higher brightness. Therefore, when these abnormal cells are irradiated with light having high energy in the visible light range, this light is selectively absorbed by the abnormal cells and converted into thermal energy. As a result, abnormal cells are strongly burned and destroyed. On the other hand, normal cells generally have high brightness and therefore absorb little of the light. Therefore, there is little damage to normal cells due to heat. Therefore, if an abnormal vascular nevus is irradiated with such light, the abnormal cells will be selectively burned and removed, but relatively bright normal cells, sweat glands, skin, etc. absorb most of the light. This prevents irreversible damage, and burns on normal cells and skin surfaces caused by light heal rapidly with the formation of minute scars. As mentioned above, the normal cells of the affected nevus absorb less light energy, and for colored cells, a wavelength in the visible light range that can absorb a large amount of light energy is selected. By setting the energy density to an appropriate value, colored cells can be selectively destroyed and eliminated.Laser light has emerged as an example of a wavelength in the visible light range, and this laser light can be used to The treatment method used was a laser treatment device.

[0004]Currently, various medical devices utilized for this laser treatment have been proposed, including a laser treatment device as shown in FIG. 6, for example. FIG. 6 is a perspective view of a conventional laser treatment device, in which a laser oscillator 1B, a power source 1A, an operation panel 1C, and parts necessary for laser oscillation are incorporated to form the device body. The laser light irradiated from the oscillation unit 1B is guided through the optical fiber 3 via the connector 2, and is emitted from the tip of the hand piece 4 and used as energy light for treatment.

[0005] Practical lasers that have a relatively large output in the visible light range and are effective for treating colored nevi include argon lasers with a wavelength of 5.140A and ruby lasers with a wavelength of 6.943A. Although the ruby laser has a large output and can cover a large irradiation area, it has the disadvantage that the irradiation time is long because it is pulsed light. On the other hand, although the argon laser has the disadvantage of a relatively low output of about a few watts, it has the advantage of good controllability of the laser beam, small irradiation area, good operability, and easy handling. Suitable for treating areas that require treatment. However, as mentioned above, such a device, such as a ruby laser device, requires the operator to hold the handpiece 4 in his hand during treatment, and while checking the affected area with the naked eye, adjusts the irradiation position by the amount of laser beam irradiated from the tip of the handpiece 4. Treatment is performed by moving the robot in sequence and irradiating it with laser light intermittently using a foot switch.

[0006]

[Problems to be Solved by the Invention] However, with such conventional laser treatment devices, there is no index for positioning, so there is a risk of the treatment being slightly deviated from the original position, making positioning difficult. It was difficult.

[0007] The present invention has been made with the object of eliminating the above-mentioned conventional drawbacks.

[Configuration of the invention]

[0009]

[Means for Solving the Problems] The present invention has been made to solve the above-mentioned problems of the prior art. A laser treatment device configured to perform treatment by irradiating irradiation onto an affected part of a living body through a laser beam, characterized in that a guide light source is provided for irradiating guide light at the position of the laser beam incident end face of the kaleidoscope. It is.

0010

[Operation] When positioning the handpiece for irradiating laser light, guide light can be irradiated, so positioning can be easily performed and the fear of shifting from the original position to be treated can be eliminated.

[0011]

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

FIG. 1 shows a partially cutaway perspective view of a handpiece 4 equipped with a kaleidoscope of the present invention. In FIG. 2, 6 is a cylindrical holder, and inside this holder 8 is a transparent rectangular columnar kaleidoscope 7.
is inserted, and the rectangular columnar kaleidoscope 7 protrudes by a predetermined length from the tip of the handpiece 6, that is, the side surface of the holder 8, and the inside of the end of the holder 8 has a recess. An insertion hole 34 is formed so that a rectangular cap-shaped kaleidoscope end face protector 11 can be manually fitted and attached thereto.

The protective device 11 is a rectangular transparent cylindrical body 1.
2 and a transparent plate-like body 13 for closing one opening thereof, and by bringing the end surface 14 of the transparent plate-like body 13 into contact with the affected part of the living body, the intensity distribution is made uniform with the kaleidoscope 7. The laser beam is transmitted through the end face 14 and irradiated onto the affected area. Furthermore, since the end surface 14 of the transparent plate-like body 13 is contaminated by tissue fragments, carbonization, cauterized pieces, etc. from the affected area of the living body during laser beam irradiation, it is designed to be detachable from the transparent cylindrical body 12 with a hand shaft, so that it cannot be replaced. Use while doing so. Further, the central portion of the hand piece 6 is fixed with screws 37 to holders 15a and 15b, which are divided into two halves and fixed with screws 36, for holding the kaleidoscope 7 on the other end surface of the holder 8. In addition, holders 15a and 15b
At the other end, a guide light source 30 such as a small lamp is attached at a position off the optical axis of the kaleidoscope 7, and an optical guide path 32 for guiding the laser beam and for supplying electricity to the guide light source 30 are installed. A receptacle 16 having electrical contacts 22 and 24 and forming a part of a connector 36 is connected to a screw 31.
is fixed. Note that the light emitted from the guide light source 30 is configured to be emitted toward the entrance end face of the kaleidoscope 1.

In the case of the above-mentioned configuration, when a laser beam having an intensity distribution peculiar to a laser beam enters from one end of the transparent rectangular columnar kaleidoscope 7 and travels inside it, it hits the four walls and all of the laser beams are transmitted. As the light is reflected repeatedly, the light intensity distribution becomes uniform, and the kaleidoscope 7
At the other end, a rectangular laser beam is outputted to the outside, that is, to the affected area, and a uniform irradiation surface is obtained, resulting in good treatment. Next, a second embodiment using a rectangular hollow columnar kaleidoscope will be described.

In FIGS. 2 and 3 showing the second embodiment, 101A and 101B are two parallel flat plates facing each other. Furthermore, 102A and 102B are the parallel flat plates 101
A and 101B are two opposing parallel flat plates located in the lateral direction. In this way, a rectangular hollow columnar kaleidoscope 105 is constructed, and the inner sides 103a and 10 of the flat plates are respectively
3b, 103c, and 103d have a structure that has a reflective surface that efficiently reflects the incident laser light.Furthermore, each corner part 104 has a structure that prevents the laser light from leaking and deteriorates the light propagation efficiency, and that the intensity distribution is It is constructed at right angles and without gaps to prevent deterioration of uniformity. The material of these flat plates 101A, 101B, 102A, and 102B is metallic glass or the like. FIG. 4 is a partially cutaway perspective view showing a second embodiment of the present invention, showing a handpiece equipped with a parallel plate rectangular hollow columnar kaleidoscope, which is similar to the first embodiment. This corresponds to FIG. 2 shown in FIG. In FIG. 5, reference numeral 105 denotes a rectangular hollow columnar kaleidoscope, and the output end of the kaleidoscope 105 is used to collect vaporized and transpired fine particles generated from the affected area when the laser beam is irradiated onto the affected area. A protective cover 202 is removably attached to protect the reflective surface of the inner surface. The output end of the light guide fiber 205 is located at the entrance of the kaleidoscope 105 via a connector from the laser oscillation source. The kaleidoscope 105 is fixed to the main body of the connector 203 with a screw 204, and constitutes a hand piece 207.

In the laser treatment device configured as described above, the operator grasps the handpiece 207, confirms its position on the patient's required area, fits the protective cover 202 tightly, and directs the laser beam to the fiber by operating a switch. The irradiated laser beam is emitted from the output section of the kaleidoscope 10.
As it progresses through the interior of 5, it repeatedly reflects off the four walls and becomes Kalide. The light is output from the output end of the scope, passes through the output plate 202A of the protective cover 202, and is irradiated to the affected area, making it possible to perform good treatment with uniform intensity distribution and no irradiation unevenness.

Further, a guide light source 2 irradiates guide light to the position of the laser beam incident end face of the kaleidoscope 201.
06, and directs the light from the guide light source to the kaleidoscope.
When irradiating the affected area through a scope to determine the irradiation position during treatment and using the guide light reflected from the rectangular columnar kaleid entrance end face to check the fiber status or failure check, perform the following steps. can.

First, regarding the guide light, the guide light from the guide light source 206 is also emitted from the fiber output end, propagates through the inner wall of the kaleidoscope 201, and reaches the kaleidoscope output end.
The light propagates inside, passes through the output plate 202A of the protective cover 202 provided at the output end, is irradiated onto the affected area, and is used as guide light for positioning. Next, for checking the fiber status and failure check,
Since it is not a scope but a rectangular hollow column, reflection from the incident end face cannot be used. Therefore, Kaleidoscope 10
The output plate 20 of the protective cover 202 provided at the output end of 5
Kaleidoscope 105 can be created by placing a member, such as white paper, that reflects the guide light on the output side of 2A.
The guide light from the guide light source 206 that has propagated therein can be reflected and returned, and the guide light can be made to enter the fiber output section. The fiber can be checked by processing this returned guide light.

Although one embodiment of the present invention has been described above, this invention is not limited to the above embodiment, and it goes without saying that various modifications can be made without changing the gist of the invention. Nor.

In the above embodiment, the plates constituting the kaleidoscope were two sets of parallel flat plates facing each other, but as shown in FIG. and a plate 30 with a reflective surface 303b on one side.
2 can also be combined to form a kaleidoscope.

Furthermore, in FIG. 4, the kaleidoscope 105
The state in which it is used is shown as it is exposed, but the
When the scope 105 is made of a strong material such as metal, it is preferably housed in a conventional holder.

[0022]

[Effect of the invention] As described above, according to this invention,
When positioning the handpiece for irradiating laser light, guide light can be irradiated, so positioning can be easily performed and the risk of deviation from the original position for treatment can be eliminated.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional perspective view showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing essential parts in a second embodiment of the present invention.

FIG. 3 is a sectional view taken at an arbitrary position in FIG. 3;

FIG. 4 is a partially sectional perspective view showing a second embodiment of the present invention.

FIG. 5 is a sectional view showing a modification of the kaleidoscope shown in FIG. 5;

FIG. 6 is a perspective view showing the entire laser treatment device.

[Explanation of symbols]

7... Transparent rectangular columnar kaleidoscope 105... Rectangular hollow columnar kaleidoscope 202... Protective cover 206... Guide light source 207... Handpiece

Claims (1)

[Claims] 1. A laser treatment device that performs treatment by irradiating laser light from a laser light source to an affected part of a living body through a kaleidoscope provided in a handpiece for treatment operation, wherein 1. A laser treatment device characterized in that a guide light source for irradiating guide light is provided at a laser beam incident end face position of the laser beam.