JP3090579B2 - Laser handpiece and laser treatment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser treatment apparatus for performing treatment by irradiating a laser beam to an affected part, and more particularly to a laser handpiece used for performing dental treatment such as transpiration in the oral cavity and incision of the gingiva. And a laser treatment device.

[0002]

2. Description of the Related Art Conventionally, as a laser treatment apparatus,
No. 12491 discloses this. Before treating an affected part using this laser treatment apparatus, it is necessary to measure the output of the laser light emitted from the tip of the laser probe using a laser light output measuring apparatus for safety.

Next, a conventional laser probe will be described. FIG. 10 is a diagram showing a schematic configuration of a conventional laser probe. The laser probe has an adapter 8a having a light-receiving end of a light-guiding fiber at one end to guide laser light from the laser light generator 2a to the affected part, and an operator at the other end so that the operator can carry the treatment. , Laser handpiece 11a
Is provided, and the optical fiber for light guiding is an outer tube 10a.
Configuration is protected by

[0004] Laser handpieces can be used in two types depending on the purpose of treatment. FIG. 11 shows a conventional laser handpiece. The first is a straight type laser handpiece, as shown in FIG. 11A, an emission end of a light guiding optical fiber 25a provided in the laser handpiece 11a, and a condensing lens for condensing laser light. 2
7a. It is mainly used for treating the affected area of the anterior tooth surface, and can be treated with the feeling of using a conventional scalpel.

[0005] The second is a contra-type laser handpiece, as shown in FIG.
1b, a reflecting mirror 26b and a condenser lens 27b for bending the optical axis of the laser light and the emission end of the light guiding optical fiber 25b.
Is provided. This is used, for example, for the treatment of the affected area of the back of the tooth in the oral cavity, and can be used with the same feeling as a turbine used for caries treatment. These straight type laser handpieces and contra type laser handpieces are appropriately selected and used according to the treatment application.

[0006]

However, when the treatment is performed, the output of the laser beam must be measured, and when the treatment application is changed, the adapter 8a, the outer tube 10a, the optical fiber for guiding the light are used. Since the handpiece 25a (25b) is integrated with each handpiece, the laser light transmission device must be replaced, and the output of the laser light must be measured, which complicates the operation. There was a disadvantage.

The present invention has been made in view of the above points, and an object of the present invention is to provide a laser treatment apparatus having a laser handpiece that can be used as a straight type laser handpiece and a contra type laser handpiece. .

[0008]

According to the present invention, in order to solve the above-mentioned problems, a laser beam guided from a light guiding optical fiber (25) is used.
Optical means (26, 27) for bending the laser light (16)
Through the laser chip (23) attached to the tip.
Laser handpiece that irradiates laser light (16) toward the affected area
The light guide optical fiber (25).
And a laser handpiece that constitutes the first gripper
Built-in main body (21) and optical means (26, 27)
And connected to the laser handpiece body (21).
A handpiece head (22) and the handpiece head;
(22) on the opposite side of the laser chip (23)
A laser beam emitted from the laser chip (23)
It has an axial direction along the traveling direction of (16) and is detachable
A second gripping part (200) attached thereto;
Remove the second gripper and remove the control using the first gripper.
Attach the laser type laser handpiece and the second gripper
Straight type laser hand using the second gripper
Laser that performs two functions of dope
A handpiece is provided.

[0009]

[Action] Remove the second grip portion, the first gripping portion and the laser chip, serves contra laser handpiece. Further, by adding a second grip portion, the laser beam which is bent and the second gripping portion is in the same direction, it serves straight laser handpiece. Therefore, it is possible to perform a straight type laser handpiece only attachment and detachment of the second grip portion, the both functions of the contra-type laser handpiece.

Therefore, the functions of both the straight type laser handpiece and the contra-type laser handpiece can be achieved only by attaching and detaching the second gripping portion.

[0011]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 5 is an external perspective view of the laser treatment apparatus of the present invention. The laser treatment device 1 includes a portable device housing 2 having a caster 3 on the bottom surface, and a laser light generator 4 in the device housing 2 and guides a laser beam generated from the laser light generator 4 to an affected part. Optical components such as a mirror 18 and a lens 19 for optically connecting the laser light transmission device 101 are arranged. A laser light output measuring device 17, an operation panel 20, and an adapter 8 are provided on the upper surface of the device housing 2.

The laser light transmission device 101 has, as a basic configuration, a connector portion 102 having one end connected to the device housing 2. One end of the outer tube 10 is connected to the connector portion 102, and the other end is connected to the other end. The laser handpiece 11 is connected via a socket 12 so that the operator can carry out the treatment while holding it . This laser handpiece 11
Are the socket 12, the laser handpiece main body 21, the handpiece head 22, the laser chip 23, the second gripper 2
00 etc. The details will be described later.

A light guiding optical fiber having a core / clad structure, which is protected by a metal tube and has a coating, is inserted in the outer tube 10. Then, by connecting the connector section 102 to the adapter 8 installed on the upper surface of the apparatus housing 2, the laser light generating apparatus 4 and the laser light transmitting apparatus 101 are optically connected.

The laser light generator 4 has a wavelength of 2.9.
An Er: YAG laser oscillator that oscillates at 4 μm is used.
It oscillates at a repetition rate of 1 to 30 pps at 00 μsec, and the irradiation energy can be adjusted within a maximum range of 1J.
An r: YAG laser oscillator is used.

As the light guiding optical fiber, the aforementioned Er: Y
A fluoride fiber is used as an AG laser oscillator having high transmittance in a wavelength band and strong against laser damage. As a fluoride fiber, for example, a core diameter of 450 μm
m AZF (aluminum / zirconium-based / fluoride glass) fluoride fiber manufactured by Hoya Corporation can be used.

Next, the structure of the laser handpiece of the present invention will be described in detail with reference to FIGS. FIG. 1 shows a second embodiment of the present invention.
A front view of the laser handpiece gripper is mounted, and FIG. 2 is an exploded perspective view of the laser handpiece of FIG. 1, FIG. 3 is contra laser hand removal of the second grip portion from the laser handpiece of FIG. 1 FIG. 4 is an exploded perspective view showing the connection of the contra-type laser handpiece of FIG. 3.

The laser handpiece 11 has a cylindrical laser handpiece body 21 having one end connected to the outer tube 10 via the socket 12, and is detachably attached to the other end of the laser handpiece body 21. A handpiece head 22; a second gripper 200 detachably attached to the handpiece head 22;
3 and the laser light 16 from the laser generator 4 (FIG. 5)
For guiding light to the laser handpiece 11
5 is provided. Note that the second gripping portion 200 has a male screw portion 201 at its tip, and is attached by screwing into a female screw portion provided on the handpiece head 22.

Next, in the laser handpiece 11,
Laser handpiece body 21 and handpiece head 2
The second connection mechanism will be described. Handpiece head 2
Reference numeral 2 denotes an inner cylinder 32 having one end fitted to the other end of the laser handpiece main body 21 and fixed by a set screw (not shown); One end of a holding member 28 for storing and holding a reflecting mirror and a condenser lens, which will be described later, is fitted to the distal end of the inner tube 32.
8 is covered by an outer cylinder 33.

The nut 34 is fitted on the outer peripheral surface of the inner cylinder 32 so as to be freely rotatable and movable in the axial direction. A male thread portion 34 a provided on the outer peripheral surface at the distal end portion is provided inside the opening end of the outer cylinder 33. It is screwed into the female screw part 33a formed on the circumference. With the outer tube 33 attached to the inner tube 32, the holding member 2
The inner bottom surface of the outer cylinder 33 is in contact with the outer end surface of the outer cylinder 8.

Next, the laser light output measuring device 17 built in the laser treatment device 1 will be described. FIG. 6 is a view in which the laser handpiece of FIG. 2 is coupled to a laser light output measuring device. Before actually irradiating the affected part with the laser light guided to the laser chip 23, the display value of the laser energy and the laser light transmission device 101 on the operation panel 20 at the top of the device housing 2 (FIG. 5) must be used. It is necessary to always keep the laser energy emitted from the tip of the laser beam coincident. This is to prevent the normal tissue from being destroyed or killed by irradiating the affected part with unnecessary energy. For this purpose, a laser light output measuring device 17 is used.

The laser output measuring apparatus 17, pyroelectric detecting handpiece insertion port 102 for inserting a holding member 28 at the tip of the laser handpiece 11 in the laser beam output measuring device 17, the laser beam output A detector 96 having a built-in element is provided, and an insertion and fixing adapter 104 for properly directing the laser beam 16 emitted from the tip of the laser handpiece 11 to the detector 96. Note that the handpiece insertion port 102 is connected to the device housing 2 of the laser treatment device 1.
Is fixed to the upper surface plate 110.

In order to match the display on the operation panel 20 (FIG. 5) with the output from the tip of the laser light transmission device 101, the holding member 28 at the tip of the handpiece is inserted into the handpiece insertion port 102, By pressing a laser light output measurement button (not shown) on the operation panel 20, the laser light 16 is reflected by the reflecting mirror 26, condensed by the condenser lens 27, and detected by the detector 96. I do. The data detected by the detector 96 is sent to a control device (not shown) having an arithmetic function installed in the laser treatment device 1, and after signal processing, calibrates the energy and displays the displayed value on the panel and the data. , Laser handpiece 11
The energy of the laser light emitted from the tip is matched.

Next, a treatment method for performing dental treatment using the laser treatment apparatus of the present invention will be described. FIG. 7 is a diagram showing the treatment of caries on the back teeth using the contra-type laser handpiece of FIG.

The laser handpiece 11 shown in FIG. 3 is mainly used for the treatment of caries on the back teeth (removal of caries from enamel, dentin, cement, etc.). Before the treatment, as described above, in order to eliminate erroneous irradiation on the affected part, the display value on the operation panel 20 is made to coincide with the light emitted from the tip of the laser handpiece 11 using the laser light output measuring device 17. As shown in FIG. 4 , the handpiece head 22 having the laser chip 23 is removed from the laser handpiece body 21,
As shown in FIG. 6, the tip of the laser handpiece 11 is inserted into the insertion port 102, and the laser light output is measured. The operation panel 2 is operated by the laser light output measuring device 17.
After the displayed value on 0 is matched with the light output from the tip of the laser handpiece 11, the laser handpiece body 21
, A handpiece head 22 is attached to the operation panel 20.
To set the energy to treat the affected area. For example,
In the case of removing tooth decay, the light emission energy should be 30 mJ-150.
The treatment is performed at mJ and a repetition rate of 10 pps.

Next, when incising the anterior gingiva or the like, treatment is performed by attaching the second gripper 200 to a contra-type laser handpiece. FIG. 8 is a view showing the incision of the anterior gingiva using the straight type laser handpiece of FIG. The second gripping part 200 is attached to a handpiece head 22 detachably fixed to the laser handpiece main body 21 on the opposite side to the laser chip 23 with respect to the emission direction of the laser light applied to the affected part, and each of them is the same. So that they are on a straight line,
The external thread of the second grip 200 and the handpiece head 2
It is fixed by screwing with the 2 female screw portions.

As described above, by fixing the second grip 200 to the side of the handpiece head 22 opposite to the laser chip 23, the treatment can be performed with the same feeling as when using a straight type laser handpiece. .

In order to actually treat the back teeth and front teeth, first, the handpiece head 22 is detached from the laser handpiece main body 21, and the display value of the operation panel 20 and the laser handpiece 11 are measured by the laser light output measuring device 17.
After treating the values of the energy to be emitted from the back teeth, treatment of the back teeth is performed. Next, the second gripper 2 is attached to the handpiece head 22.
The treatment of the front teeth is performed by fixing 00, but since the laser output is calibrated during the treatment of the back teeth, there is no need to calibrate again.

Conventionally, a straight-type laser handpiece is used for treatment of front teeth, a contra-type laser handpiece is used for treatment of back teeth, and the laser energy must be calibrated each time the laser handpiece is replaced. Although this had to be done, the present invention omits that operation and allows for rapid treatment.

In this embodiment, the second gripper 200 is positioned on the same straight line as the laser chip 23. However, the present invention is not limited to this.
The same effect can be obtained even when the reference numeral 3 is not located on the same straight line in the same direction as the traveling direction of the bent laser light.

In this embodiment, the second gripper 200 is added to the handpiece head 22 which is detachably attached to the contra-type laser handpiece 11, but as shown in FIG. Body 21
You may make it attach to. That is, the mounting member 2
One end of 11 is screwed with a screw 211b, the other end is provided with a female screw portion 211a, and the male screw portion 201a at the tip of the second grip portion 200a is screwed.

In this embodiment, the second gripping portion 200 and the handpiece head 22 are fixed by screwing the male screw portion 201 and the female screw portion 202. However, the present invention is not limited to this. Alternatively, a connector that can be detachably fixed to a connector type or a connector that is fixed by being fitted with a step difference therebetween may be used.

[0032]

As described above, according to the present invention, it is provided with the second gripping portion detachably on the opposite side of the laser chip of the laser handpiece in the present invention, a straight type laser handpiece and contra-type depending on the therapeutic purpose It can be a laser handpiece that can be used as a laser handpiece, there is no need to replace the laser light transmission device, there is no need to calibrate the laser light output depending on the type of treatment,
Be able to respond quickly to treatment.

[Brief description of the drawings]

FIG. 1 is a front view of a laser handpiece on which a second grip of the present invention is mounted.

FIG. 2 is an exploded perspective view of the laser handpiece of FIG.

FIG. 3 is a front view of the contra-type laser handpiece in which a second grip is removed from the laser handpiece of FIG. 1;

FIG. 4 is an exploded perspective view of the contra-type laser handpiece of FIG.

FIG. 5 is an external perspective view of the laser treatment apparatus of the present invention.

FIG. 6 is a view in which the laser handpiece of FIG. 2 is coupled to a laser light measuring device.

FIG. 7 is a diagram for performing caries treatment of a back tooth using the contra-type laser handpiece of FIG. 3;

8 is a view of incising the anterior gingiva using the straight laser handpiece of FIG. 1;

FIG. 9 is a view showing another embodiment in which a second grip is mounted.

FIG. 10 is a diagram showing a schematic configuration of a conventional laser probe.

FIG. 11 is a view showing a laser handpiece, and FIG.
FIG. 3 is a diagram showing a straight type, and FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 laser treatment device 4 laser light generating device 17 laser light output measuring device 11 laser handpiece 21 laser handpiece main body 22 handpiece head 23 laser chip 101 laser light transmission device 200 second gripping part

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akihiro Kawahara 2-7-5 Nakaochiai, Shinjuku-ku, Tokyo Inside of Hoya Co., Ltd. Inside Morita Manufacturing Co., Ltd. (72) Inventor Yoshihide Okakami 680, Higashihama-minamicho, Fushimi-ku, Kyoto-shi, Kyoto Prefecture Morita Manufacturing Co., Ltd. (56) References JP-A-59-85656 (JP, A) JP, U) Shokai Sho 62-4312 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61C 3/00-3/02 A61B 18/20

Claims (2)

(57) [Claims] 1. A laser beam guided from an optical fiber for light guide (25).
Optical means (26, 27) for bending the laser light (16)
Through the laser chip (23) attached to the tip.
Laser handpiece that irradiates laser light (16) toward the affected area
A first gripping part , wherein the light guiding optical fiber (25) is built-in;
And a laser handpiece main body (21) and the optical means (26, 27).
Handpiece head connected to dope body (21)
(22) and the laser chip of the handpiece head (22)
The laser chip (23) is located on the opposite side to (23).
Axis along the direction of travel of laser light (16) emitted from
Orientation of the second gripping portion (20
0) and comprises, detaching the second gripping unit, using the first gripping portion
Contra-type laser handpiece and the second gripper
Attachment Straight type lay using the second gripper
It is characterized by performing the two functions of the handpiece
Laser handpiece. 2. A laser beam generator for generating a laser beam.
(4) and a laser light transmission device for guiding the laser light to an affected part
(101) and a laser light output measuring device (17).
The laser treatment device (1), wherein the laser handpiece according to claim 1 is connected to the laser light transmission device.
Characterized in that it is connected to the tip of the feeding device (101).
User treatment device.