JPS58183177A - Laser apparatus used in treatment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Technical Field of the Invention] The present invention provides a therapeutic laser device that transmits high energy using 7 eye lasers and irradiates the affected area for treatment, and multi-divides the high energy laser beam. Then, a light guide fiber is arranged for each of them to reduce energy transmission and input to the optical fiber, and the light intensity distribution is distributed. The fiber output section that connects to the Kaleidosco! This invention relates to a Rede treatment device equipped with T-.

[Technical background of the invention]

Currently, various medical devices using Rede light have been proposed, and one used in the field of plastic surgery is a Rede treatment device for removing and treating colored birthmarks such as birthmarks, age spots, and freckles.

Conventionally, nine methods have been used to treat birthmarks, including cell destruction using dry ice, skin grafting, excision, thinning, and baking with electric drying. Many methods are known, but none of them are very effective compared to the size of the invasion, the treatment itself causes pain to the patient, and there is a need for hospitalization, so the treatment period may be short. There are disadvantages such as long-term
Improvements in treatment methods have been desired. Recently, with the development and improvement of laser equipment, a method of using a laser beam to burn the affected area has been proposed, and although the number of cases is small, it has been put into practical use and its therapeutic effects are being recognized.

However, when performing treatment using Rede light, conventional devices use a system in which the Rade light from a Rade light source is guided through a lens system, making it difficult to operate in the process of guiding it to the affected area. Inferior.

For example, positioning when performing Radical irradiation treatment on an affected area is performed by moving the Radical oscillator or the patient himself. As one of these improvements in operability, attempts have been made to use optical fibers in the Rade light guide path, such as the Rade treatment apparatus shown in FIG. 1.

That is, in FIG. 1, -1 is a treatment device power supply, and 2 is a Radhe oscillation source that is operated by receiving energy from this power supply 1 via the I-pull IA and oscillates Radhe light. A light guide section 4 having a built-in optical fiber is connected to the output end of the light guide section 4 through a connector 3.
A hand piece 6 for manual operation equipped with a kaleidoscope made of, for example, rod-shaped optical glass is connected to the output end of the laser beam via a connector 5 to form a light intensity distribution of the emitted laser beam. ing.

FIG. 2 is an elemental sectional view of the connector 3, that is, the connector portion that inputs the Raded light outputted from the Raded oscillation source 2 to the end face of the optical fiber with a good degree fILn. That is, in the connector part, the optical fiber 1 forming the light guide member 4'fc is inserted into the tubular sleeve 12 and fixed with adhesive to form a protective outer cover and a reflective surface forming the optical fiber 1. The core 13 of the optical fiber is atomized by peeling off the cladding for a certain length from the fiber end face, and this useless end face is used as the laser input end, and a core holding hole is formed in the center of the exposed outer circumferential surface of the tip of the core 13. A carrier having a diameter 14a is held by an f-shaped core support 14. The core supporter J4 is fixed to the sleeve 12, and the surface on the laser beam incident side is generally a mirror surface or a diffusing surface to reverse or scatter the Raded light so that the Raded light does not enter other than the end surface of the core 13. That's what I do.

15 is provided on the outside of the sleeve 12, and the bag and the
8, the lens 16 is fixed therein, and the lens 16 is attached to the segment 11. By screwing the lens 16 into the segment 11, the focused light of the lens 16 is brought to the radar light incident end face of the core 13. The structure is such that they can be connected with high positional accuracy. The Rade light 20 oscillated from the Rade oscillation source 19 is focused by the lens 16, and the laser beam 20 is focused at a position in front of the lens focal point and at a position close to the diameter of the core 13 so that all of the output light enters the Rade light incident end face of the core 3. The core 13 is configured to be located at a position where the optical path is converged to the same diameter. As a result, the radar light is guided to the core IS of the optical fiber 11,
It propagates within the core 13 and is sent to the handpiece 6. By the way, if the type of radar of the laser oscillation source 19 is a solid-state laser and its oscillation method is high-energy I-laser oscillation, the laser beam output is high energy and therefore has a large destructive force and is dangerous. Therefore, it is difficult to perform optical alignment of the laser oscillation source 19, lens 16, and core 13, and generally a different guide light (one with good directionality, continuous light emission, and high safety) is used. For example, the optical alignment is performed using a H, -N, laser beam) to align each optical component, but since the guide light is only for convenience, it must be aligned. Laser oscillation source J9
The success or failure of alignment with respect to the laser beam cannot be determined unless the laser beam is actually irradiated, so when making adjustments, irradiate the high-energy radar beam each time to confirm the relative position of the guide beam and the laser beam. It is necessary to do it.

At this time, if a portion of the high-energy Rade light from the Rade oscillation source 19 does not enter the incident end face of the core 13, this Rade light will strike the core supporter 14. Also,
Even if a deviation occurs in the optical alignment due to vibrations, shocks, etc., part or all of the high-energy radar light may hit the core supporter 14.

The core supporter 14 is generally made of brass or stainless steel because of the need to provide it with high processing precision and at low cost. For pulse oscillation, 4
0), -r, irradiation time 1/1000 seconds), so if the core supporter 14 is mistakenly irradiated with Radical light, the irradiated metal surface will easily melt and the transpiration that occurs at that time will If a substance adheres to or evaporates on the Raded light incident end face or lens surface of the core 13 of the optical fiber 11, reducing the transmittance of the Raded light, or causing end face breakage,
There is a problem in that variations occur in the distribution of the guided LED light to the end piece, resulting in dispersion in the LED light output during treatment, which has a serious adverse effect on the therapeutic effect and results in unusability. Furthermore, fibers that propagate each wavelength generally have a certain limit value that depends on the polishing accuracy of the input and output end faces, and if the energy density of the input and output end faces exceeds a threshold value, it can cause damage (destruction). There's a problem.

[Purpose of the invention]

This invention was made in view of the above circumstances.When the oscillated LED light is focused by a condensing lens, etc., the high energy that would melt metal etc. Effective propagation of Rade light without damaging the fiber end face when entering the optical fiber of the light guide path member in a therapeutic Rade device that utilizes the energy density of the end face (which will be damaged if the energy density exceeds a threshold value) The purpose of the present invention is to provide a therapeutic laser device that can perform the following tasks.

[Summary of the invention]

That is, in order to achieve the above object, the present invention provides a treatment that includes a kaleidoscope for uniformizing the light intensity distribution of a laser beam from a laser oscillation source that oscillates a laser beam through a flexible light guide path. In the Rade treatment device, the LED light is guided to an operating handpiece and is irradiated to the affected part of the living body via the kaleidoscope to perform treatment. A multifocal condenser lens is arranged to converge the LED light and input it to the end face of the light guide, and the LED light is condensed into multiple divisions, and the multifocal convergence is focused on the optical axis of the focal point of the lens. By setting up a number of guiding paths,
Multi-divided and condensed Rade light is input, the Rade light is propagated, and on the output side of the light guide, a large number of light guides are bundled and then input to the kaleidoscope to calculate the energy density of each light path. Keep it low to prevent destruction.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 3 is an elemental cross-sectional view showing one embodiment of the present invention, excluding the laser oscillation source.

This device is characterized in that it uses a multifocal lens 22 as a condensing lens to divide the optical path and provide a light guide path corresponding to each optical path, thereby lowering the energy density of each optical path.

That is, in FIG. 3, the Raded light 2 oscillated from a Raded oscillation source (not shown) is divided and focused by a multifocal condenser lens 9, for example, a bifocal condenser lens 22, and the focal point of the bifocal condenser lens 22 is focused. Narrow down to the minimum beam diameter at positions 23 and 24. At this time, the focal spot diameter of Rade beam 2 is D#f, where f is the lens focal length and θ is the spread angle of the Rade beam.
・θ[■], and the energy density E at that time is expressed as E = P/πCi)''/2[W/ffi'), where P is the average of the laser beam/9 watts.In other words, two focal points By using a lens, the energy density of each focused spot can be halved, and by using a multifocal lens, it can be reduced to one-fold by the number of focal points.The energy density at the input and output end faces of the fiber is close to the threshold value. When performing treatments that require high energy, such as in cases where the Radhe beam is divided into multiple parts, it is possible to transmit it through the fiber of the light guide path without using the fiber end face as a special book. It can be finished with ordinary optical polishing, and can be made into a fiber at low cost and with a long lifetime.

At the positions of the focal points 23 and 24 of the bifocal condensing lens 22, fibers 27 and 28 of the light guiding path member are arranged to face each other with good positional accuracy so that the Radhe light can propagate effectively. That is, a fiber holder 26 fitted with a high positional accuracy is provided at the light output side end of the lens I holder 25 that holds the two-focal condensing lens 22.
7.28 is fixed. Each of the fibers 27, 28 is composed of a core 32, 31, a core 32, 31 (not shown), and a coating (not shown) as a protective material, and a part of the input end thereof is relatively thermally weak. Because it is made of a material, these coatings, cracks, and cracks are removed to prevent it from melting and damaging other parts in the unlikely event that it is irradiated with scattered radar light or optical axis deviation. When used, only the cores 31 and 32 are held in an exposed state and protruded from the inner end surface of the fiber holder 26 by the core supporter 14.

The laser light output part of the fibers 27, 211, that is, the end on the side of the handpiece 33, re-integrates the LED light that has been split by the bifocal condenser lens 22 at the fiber input part and split and transmitted by the two systems of 7 eyes 27, 2&. These two fibers 27 are rounded and input into the kaleidoscope 36.
．． 28 are tied together with a fiber holder 34 and inserted and fixed into a kaleidoscope holder 35 that holds a kaleidoscope 36.

To explain the operation of the therapeutic laser device configured as above, the laser beam 21 output from the Raded oscillation source is
The optical fiber 2 is divided and converged into two points 23 and 24 through a focusing lens 22 and installed at opposing positions.
7.Enter in 28. This input laser light propagates within the optical fiber and is output from the tip on the emission side.

The two fibers 27, 28 are bundled at the output end side, and a rectangular kaleidoscope 36 is arranged at the output end of the fibers 27, 28, so that the fiber 27, 28
7. The two lines of Radhe light, which have a non-uniform intensity distribution and are emitted from the output end of 28, hit the four walls repeatedly as they travel through the kaleidoscope 36 and are reflected repeatedly, resulting in a light intensity distribution. The light is uniformized and outputted to the outside as rectangular radar light passing through the cross-sectional shape of the kaleidoscope 36 for treatment.

By the way, according to the present invention, the following effects can be obtained. In other words, in an energy transmission fiber, if the energy density (W/am) at the input/output end face exceeds a threshold value unique to the fiber, damage will occur and transmission will become impossible. However, by using a multifocal condensing lens, the end face was finished with the utmost care and the best manufacturing was required, and the life of the fiber was relatively short, making it an expensive light guide material overall. By dispersing and condensing the Rade light, reducing the energy density of the Rade beam, and simultaneously transmitting multiple systems using fibers corresponding to the number of focal points, high-energy transmission can be easily and inexpensively realized.

As a result, the incident laser beam energy of the 7-eyeper in each system is lowered, and there is no risk of damaging the fiber. Moreover, since the cores 31 and 32 on the incident end side of the optical 7 eyer protrude and the focal point of the condensing lens 22 is located on the tip surface thereof, the Rade luminous flux will not spread on the side of the light traveling direction from the tip surface. Since the energy density is much lower,
Even if a part of the shirede light comes off from the end face of the core 31 or 32, the fiber holder 26 or the core support I4
It does not affect other components.

Although one embodiment of this invention has been described above, this invention is not limited to the above embodiment, and it goes without saying that it can be implemented with various modifications without changing the gist of this invention. .

In the above embodiment, the multi-divided Rede light using a multifocal condensing lens is recombined at its output end and incident on a single kaleidoscope, which is equivalent to laser light oscillated from an oscillation source. However, as a modified example, as shown in FIG. 4, the radar beams divided into multiple parts by a multifocal condensing lens are made incident on the fibers 27 and 28 at corresponding positions, respectively. Each independent Kaleidosco at the output end! 51. Configure to be equipped with 51.

The Rede treatment device configured in this manner has various advantages.

The first is that the homogenized Radhe light emitted from the kaleidoscope 51.51 has equal energy at the same time, so it can be used to simultaneously irradiate different parts of the body or multiple patients that require treatment. Treatment can be performed.

Second, it is possible to measure the true output value of the tip of the kaleidoscope that irradiates the patient by utilizing the simultaneousness and equal division of one kaleidoscope 5, for example.

That is, the force 2 id scope 5 is coupled to the output measuring device,
By using another kaleidoscope 52 to irradiate the affected area that requires treatment, this can be done and can be used for subsequent nevus treatment.

The third one is Kalidesko! By changing the irradiation area of 61 on each side, it is possible to perform treatments with different sienel densities. The energy required for treatment naturally varies depending on the type of birthmark, so the energy is emitted from kaleidoscopes with different energy densities. This allows laser light to be used for treatment at the same time.

In addition, as another modification, in the modification described above, a pair of kaleidoscopes were used independently for each fiber 2, but as shown in FIG. A reflective layer 62 is formed on the outer surface of the 7" 61 to maintain total reflection, and multiple kaleidoscopes are connected to fit the shape of the nevus to be treated. By using this method, it is possible to prevent duplication of treatment surfaces or nevus surfaces that are not irradiated due to misalignment of the irradiation position during treatment.

As described above, according to the present invention, in addition to being able to reduce the energy of high-energy Raded light and transmit it, it is also possible to perform Radical treatment in which the area of the output end is changed in each direction, and the energy density is adjusted according to the area. This makes it possible to prevent fiber damage and provide a highly safe and stable Rade treatment device with good therapeutic effects.

〔Effect of the invention〕

As described in detail above, the present invention uses a kaleidoscope to condense Raded light from a Raded oscillation source into a condensing lens and guide it to a light guide path, and to uniformize the light intensity distribution through this light guide path. In a therapeutic radar device that is guided to a hand piece for therapeutic operation and irradiated to an affected part of a living body for treatment, the condensing lens is a multifocal lens that divides the optical path and provides a number of light guide paths corresponding to the number of optical paths. Since the LED light is guided by multiple divisions, each light guide path has a low energy density of the incident Rade light9, and is susceptible to destruction of the light guide path caused by high-energy Rade light and irradiation due to leakage of the Rade light. It is possible to provide a therapeutic RADE device having excellent features such as eliminating the occurrence of bath melting and scattering of the nine parts, and obtaining high-energy laser light by dividing and collecting the nine RED lights.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the entire Rade treatment device, FIG. 2 is a cross-sectional view of a main part showing a conventional optical fiber input section, and FIG. 3 is a view of the Rade treatment device showing an embodiment of the present invention. 4 is a sectional view of a hand piece showing a modification of the present invention, and FIG. 5 is a sectional view of a hand piece showing another modification of the invention. . 2 No. . . . Laser light, 22 . . . Multifocal condenser lens, 2
3.24...Focus position, 27.28...Optical fiber, 33...Handpiece, 36...Calitoscope
! , 51.52... Kaleidoscope, 61... Kaleidoscope! , 62... cladding layer.

Claims (1)

[Scope of Claims] A kaleidoscope in which Rade light from a Radhe oscillation source is focused by a condensing lens and guided to a light guide path, and the light intensity distribution is made uniform through this light guide path. A therapeutic radar device characterized in that a multifocal lens is used to divide the optical path, and a number of light guide paths corresponding to the number of optical paths are provided to guide the radar light in multiple divisions.