JPH0636809Y2 - Dental laser switching device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is a medical laser switching device used particularly in the dental field, and more specifically, a laser beam A in the wavelength range of 750 to 850 nanometers.
And two semiconductor lasers (generating elements) that separately generate a laser beam B of 600 to 740 nanometers, respectively, selecting any one of the laser beams, combining both laser beams, and combining both laser beams. The present invention relates to a medical laser switching device in which the laser beam B is sometimes controlled to a low output range so that it can also be used as a guide beam. This switching device is provided between two laser sources and a single light guide means. Is located in.

(Prior Art) It is well known that the purpose of treatment is achieved by irradiation with various laser beams in the dental field and other medical fields. Similar to other laser sources, semiconductor lasers are becoming more practical in the field because of their higher output, smaller size, and relatively lower cost. Therefore, the practical range is further increased.
In order to simplify a semiconductor laser medical device and achieve different laser treatment purposes, laser light from two semiconductor lasers is selectively or compositely guided to an incident end of a single light guide means. Various laser switching devices have been proposed. Further, an apparatus has been proposed in which a guide laser beam of visible light is combined with a laser beam for treatment by a light source different from a laser beam source for treatment of invisible light so as to optimize irradiation of the laser beam for treatment.

(Problems to be solved by the invention) In a device of the type that selectively or compositely irradiates the laser beams from the two semiconductor lasers described above, a single semiconductor laser and an individual device including a light guide means are provided. In comparison, in the sense that one type of applicator can achieve two types of laser treatment selectively or in combination, it is useful for simplifying the device and expanding the range of treatment. However, the laser light for treatment and treatment is usually invisible light, and it is impossible to visually recognize the laser irradiation site. In order to determine the laser light irradiation area, it is necessary to combine visible light guide light, and therefore it is necessary to separately incorporate invisible light. Conventionally, a He-Ne laser is often used as such a visible light source, but it is difficult to miniaturize it, and when a halogen lamp or an incandescent light bulb having a relatively short replacement life is used, the replacement work becomes troublesome. Conventionally, it is also sufficient in alignment for efficiently combining two laser beams, optical axis alignment for appropriately guiding the combined laser beams to the incident end of a single light guide means, and the like. No adjustment technology provided.

(Means for Solving the Problems) The present invention has been made in view of the above, and selectively or compositely irradiates laser light from two semiconductor lasers, and particularly in the case of composite irradiation, one laser light is emitted. By irradiating the laser beam as a guide beam light, it is not necessary to separately provide a visible light source, and both laser beams can be position-adjusted in a plane orthogonal to the laser beam while being combined as a parallel beam. The improved points are that the composite laser light is guided, and the position is adjusted in a plane orthogonal to the light guide optical axis.

The structure of the present invention will be described below with reference to the drawings corresponding to the embodiments. FIG. 1 is an explanatory view showing the outline of one embodiment of the device of the present invention with a diagram, and FIG. 2 is a front view of the device embodying this. Figure,
FIG. 3 is the same plan view, FIG. 4 is the IV-IV arrow view of FIG. 3,
FIG. 5 is a perspective view showing the dichroic mirror means and its rotational position adjusting mechanism, FIG. 6 is a sectional view showing the relation between the laser light adjusting position adjusting mechanism and the semiconductor laser, and FIG. 7 is a laser light adjusting position adjusting. FIG. 8 is a sectional view showing the relationship between the mechanism and the light entrance end of the light guide means, FIG. 8 is a front view of another embodiment of the present invention,
FIG. 9 is a plan view of the same, and FIG. 10 is a block diagram of electric switching control means.

The present invention has a wavelength range of 750 to 850 nanometers and an output of
A semiconductor laser that generates a laser beam A of 300 mW or more, and 600
A semiconductor laser that generates a laser beam B in the wavelength range of ˜740 nanometers, a dichroic mirror unit that transmits the laser beam A but reflects the laser beam B, and a transmitted light of the laser beam A and a reflection of the laser beam B. A light guide unit having an incident terminal and an emission terminal common to both of the light and either or both of the two types of laser light A and B described above are selected, and when both generations are selected, the laser light B is selected. Consists of electrical switching control means for controlling the laser oscillation drive circuit of each semiconductor laser based on the selection signal of the laser light selection switch that selects either the treatment output of 3 mW or more and the output of the guide light of 1 mW or less This is a dental laser switching device.

The output of the laser light A is 300 mW or more, the output of the laser light B that is red visible light as the treatment laser light is 3 mW or more, and the output as the guide light b is 1 mW or less. The laser beam A is mainly used for treatment of tissue heating, coagulation / hemostasis, transpiration / dissection based on its wavelength and output, and the laser beam B is intended for sterilization of caries. In addition to the above-mentioned structure, the present invention provides an optical member 11 or 21, such as SELFOC, which emits both laser beams A and B as parallel beams, and a laser beam in a plane where the optical axis of the laser beam A or B is orthogonal to the laser beam axis. A mechanism C for adjusting the position of the semiconductor laser itself which emits light, a mechanism D for rotating and adjusting the position of the dichroic mirror means 3 in the circumferential direction, and an incident end 41 of the light guide means 4 positioned in a plane orthogonal to the light guide optical axis. The adjusting mechanism E is further included. The electrical switching control means 5 is, as shown in FIG. 10, a laser light selection switch.
When a desired laser light and output are selected from the switches of selection of A, B laser light, composite and several kinds of output by 104, a laser oscillation drive circuit is sent via the switching control circuit 103 by the selection signal. When the foot switch 105 is turned on, the semiconductor lasers 1 and 2 are driven by the laser oscillation drive circuits 101 and 102, respectively.

(Operation) The present invention having the above-mentioned configuration uses the laser beams from the two semiconductor lasers 1 and 2 (a) A alone, (b) B (for treatment)
Irradiation of four sets is possible: single, (c) A, B (for treatment) combined, (d) A, b (guide light) combined.

Of these, in the case of (C) A and B combined irradiation, the above-mentioned two treatment contents of heating, coagulation / hemostatic, evaporation / dissection and sterilization are achieved, and in the case of (D), treatment and treatment by laser light A With respect to, it is possible to visually recognize the treatment treatment site by the guide light b. The selection (and control) of (a) to (d) is performed by the means 5 described above. In the field of dentistry, irradiation with laser light A causes heating, coagulation, hemostasis, transpiration and incision, as well as root canal treatment, periodontal treatment, photopolymerization of prosthesis materials with laser irradiation associated with the development of new materials, capillary blockage, Edge sealing, initial caries detection by optical analysis, etc. become possible, and the laser beam B enables sterilization at the treatment site. The red guide light b is combined with the above-mentioned laser light A for treatment to enable confirmation and visual confirmation of the irradiation area of the treatment treatment. In the present invention, since the guide light b uses a low output light of 1 mW or less of the laser light B, it is not necessary to separately provide a light source for the guide light.

Laser light A, B by optical members (SELFOC, etc.) 11,12
If the light is emitted as a parallel beam, it becomes easy to focus each beam and perform optical adjustment at the time of compounding, and the semiconductor laser itself is set in a plane in which either the optical axis of the laser light A or B is orthogonal to the laser optical axis. Application of the position adjusting mechanism C facilitates position adjustment when combined with one laser beam, and further cooperates with the rotational position adjusting mechanism D of the dichroic mirror means 3 for adjusting the oblique angle with respect to one laser beam. This ensures the proper combination of both laser lights A and B. Then, when the composite laser beams A and B are guided to the incident end 41, the mechanism E that adjusts in the plane orthogonal to the guided optical axis enables efficient laser transmission.

(Embodiment) FIGS. 2 to 9 of the embodiment show a laser switching device combined with a dental laser treatment device. The second of these
The apparatus of the first embodiment shown in FIGS. 7 to 7 is an electrical switching control device 5, semiconductor lasers 1 and 2, and a mechanism C for adjusting the position of the semiconductor laser itself in a plane in which one optical axis is orthogonal to the laser light. , A dichroic mirror 3 which transmits the laser light A from the semiconductor laser 1 but reflects the other laser light B and combines the two laser lights A and B to guide them to the incident end 41 of the light guide means 4. A transmission laser in which a mechanism D for adjusting the oblique position of the mirror with respect to the optical axes of the two laser beams A and B by adjusting the rotational position of 3 and the incident end 41 are aligned in a plane orthogonal to the laser beam. It is composed of a mechanism E for adjusting the optical axis of light. Specifically, the semiconductor lasers 1 and 2 are provided with self-locks 11 and 21 for forming parallel beams on the respective front sides, and in this example, the semiconductor laser 2 together with the self-lock 21 is the semiconductor laser 2.
The position adjustment mechanism C is installed in the position adjustment mechanism C to adjust the position in the X and Y directions in a plane whose optical axis is orthogonal to the laser light, but the other semiconductor laser 1 is a non-adjustable fixed relationship. Has become. The dichroic mirror means 3 is a flange
A cylindrical body 32 having 31 and a through hole formed directly through the peripheral body of the cylindrical body 32 facing the semiconductor laser 1 and the incident end 41.
The rotation adjusting mechanism D comprises a short hole 33 facing the through hole 34 and the semiconductor laser 2, and a dichroic mirror 35 fitted in a groove hole 351 obliquely provided in the cylindrical body 32.
Is an arc groove 3 drilled at the diameter corresponding to the circumference of the flange 31.
6, a pin 37 that is planted on the base 7 and is fitted into the arc groove 36, a fixing bolt 38 that is screwed into the pin 37, and an operating rod 39 that is screwed into the cylindrical body 32. . From this configuration, it is apparent that in order to rotationally adjust the dichroic mirror means 3, if the fixing bolt 38 is loosened and the operating rod 39 is rotated with a fingertip, the position can be adjusted within a range in which the pin 37 can move in the circular arc groove 36. is there. The incident end 41 of the single light guiding means 4 can also be aligned with the optical axis by an X, Y position adjusting mechanism E for adjusting the position in the X, Y directions in a plane orthogonal to the light guiding optical axis. And the above mechanism C uses exactly the same adjusting mechanism. This will be described about the mechanism C. One fixed plate 22 and a sliding plate 2 that can slide on the fixed plate 22 in both the X and Y directions.
3. The slide plate 23 includes another slide plate 25 connected and fixed to the slide plate 23 via a connecting plate 24, and the slide plate 23 has a unidirectional elastic force imparting member 26 in the XX direction, and also Y-. Also in the Y direction, the unidirectional elastic force imparting members 27 come into contact with each other, and
Adjusting screw rods 28 and 29 are provided in contact with the other side of the sliding plate 23 on the opposite sides of the lines of action of the 26 and 27, respectively, and counteract the resilience of the members 26 and 27. Semiconductor laser 2 and SELFOC
Reference numeral 21 is incorporated in the mechanism C, and the semiconductor laser 2 is housed in a mounting hole 211 penetrating the sliding plates 23, 25, the connecting plate 24 and the fixed plate 22 as shown in FIG. Insulator 21
It is attached via 3 and the restraint 214.

From this configuration, it is easily understood that the position adjustment of the laser optical axis from the semiconductor laser 2 in both X and Y directions is performed by screwing and unscrewing the adjusting screw rods 28 and 29. Mechanism E
Also, since the configuration and operation are exactly the same as those described above, the description is omitted here and only corresponding symbols are put. The details of the incident end 41 of the light guide means 4 are as shown in FIG. 7, where the incident end of the fiber sheath 46 is the fixed plate 42, the sliding plate 43, and the connecting plate of the mechanism E.
44, coaxially with the end of the sheath 43 by the fiber fixing tool g at the end of the fiber f housed in the mounting hole 411 penetrating the sliding plate 45 and held by the fitting 412. It is fixed. On the other hand, on the front side of the fiber f, the lens holder 47 is fitted in the mounting bracket 412 and is fastened to the sliding plate 45 by another mounting bracket 412 and the taper member 417. A receiver 461 is provided, and a compression spring 418 is press-fitted between the mounting bracket 412 and the holder 47 to constantly urge the holder 47 to the rear side so that the incident end 41 of the fiber f is stored in the taper receiver 461. Part 462
Is fitted to the taper member 417 and held concentrically. Inside the holder 47, laser light is emitted and the incident end of the fiber f is
Lens 419 for focusing on 41 and this lens 419
The lens retainer 491 for fixing and holding the
Is screwed in from the front side of. With this configuration, the adjusting screw rod
By making 48 and 49 progressive and screw back in the X and Y directions, respectively, the incident end 41 of the fiber f is moved in the plane area orthogonal to the light guide optical axis by X,
The position can be adjusted in the Y direction. Further, the fiber incident end 41 is properly held at the center of the lens holder 47 by the forward tapered receiver 461 and the taper member 417, and the light guide laser focuses on the incident end 41 to reduce the transmission loss. It can be easily understood that the data is transmitted as a transmission. Further, FIGS. 8 and 9 show another embodiment of the present invention, which is different from the above-mentioned embodiment only in the position adjusting mechanism E. I will omit the explanation.

The position adjusting mechanism E shown in FIGS. 8 and 9 has a tilt adjusting screw 72 provided with a total reflection mirror 7 attached to a block body 70 which is rotatable about an axis 71 and which is vertically installed. A mechanism that allows the angle to be adjusted by screwing back and forth, and a moving block 82 that holds the light guide means in the holding frame 8 is further advanced in the X-Y directions within the surface area orthogonal to the laser optical axis by screwing and screwing the screw 81. It is composed of a movable mechanism.

Needless to say, there is the light output end 42 of the fiber f on the front side of the light guide means. The laser cooling unit 6 includes a heat radiation fin k and a heat radiation Peltier element l, respectively.

(Effect of the Invention) As is clear from the above description, according to the present invention, it is possible to irradiate either or both of the two kinds of laser light A and B from the two semiconductor lasers, and in the case of both irradiations, the laser Since the light B can be used not only as the treatment laser light but also as the guide light b, there is no need to separately install a visible light source, the apparatus can be simplified, and the trouble of exchanging the light source is released. Further, by applying the position fine adjustment mechanism in the orthogonal X and Y directions, the laser beams A and B can be consistently reflected, combined, and guided, which enables efficient laser transmission.

Therefore, the present invention is remarkable in that it is useful for the laser treatment in the dental field as described above.

[Brief description of drawings]

FIG. 1 is an explanatory view showing the outline of one embodiment of the device of the present invention with a diagram, and FIG. 2 is a front view of the device embodying this.
FIG. 3 is a plan view of the same, FIG. 4 is a view of FIG.
FIG. 7 is a perspective view showing the dichroic mirror means and its rotational position adjusting mechanism, FIG. 6 is a sectional view showing the relationship between the X, Y position adjusting mechanism and the semiconductor laser, and FIG. 7 is an X, Y position adjusting mechanism and light guiding. FIG. 8 is a sectional view showing the relationship with the light entrance end of the means, FIG. 8 is a front view of another embodiment of the present invention, FIG. 9 is a plan view of the same, and FIG. 10 is a block diagram showing electric switching control means. To represent. (Explanation of symbols) 1, 2 ... Semiconductor laser, 3 ... Dichroic mirror means,
4 ... Light guide means, 41 ... Incident end, 5 ... Electrical switching control means,
A, B ... Laser light, b ... Guide light, C, E ... Orthogonal X, Y direction position adjusting mechanism, D ... Dichroic mirror means rotational position adjusting mechanism.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Shigeru Kishi 680 Morita Manufacturing Co., Ltd. 680 Higashihaman-cho, Fushimi-ku, Kyoto-shi, Kyoto (56) References JP 62-254117 (JP, A) JP 59- 194733 (JP, A) JP 62-266049 (JP, A) JP 58-79783 (JP, A) JP 55-22097 (JP, B2)

Claims (2)

[Scope of utility model registration request] 1. A semiconductor laser which emits laser light A having an output of 300 mW or more in a wavelength range of 750 to 850 nanometers, and 6.
A semiconductor laser for generating a laser beam B in the wavelength range of 00 to 740 nanometers, a dichroic mirror means for transmitting the laser beam A but reflecting the laser beam B, and a transmitted light of the laser beam A and a laser beam B. A light guiding means having an incident end and an emitting end common to both of the reflected light;
A laser light selection switch for selecting either or both of the two kinds of laser light and selecting both of them for selecting the laser light B to either the treatment output of 3 mW or more and the guide light output of 1 mW or less. A laser switching device for controlling a laser oscillation drive circuit of each semiconductor laser based on the selection signal of 1. 2. An optical member for emitting both laser beams as parallel beams, a mechanism for adjusting the position of the semiconductor laser itself for emitting the laser beams in a plane orthogonal to the optical axis of one of the laser beams, and a dichroic mirror. The dental laser switching device according to claim 1, further comprising a mechanism for adjusting the rotational position in the circumferential direction and a mechanism for adjusting the position of the incident end of the light guide means in a plane orthogonal to the light guide optical axis.