JPH08275956A - Laser therapeutic device and laser probe - Google Patents

Abstract

PURPOSE: To precisely emit a laser beam in a desired direction to a laser beam irradiated part such as an affected part, and improve the operability and maintenance property. CONSTITUTION: A probe 3 is installed to a first holding member 7, and this first holding member 7 is installed to the head part 5 of a hand piece body 3 by a second holding member 8 in such a manner as to be attachable and detachable. The second holding member 8 is nipped by the head part 5 and the first holding member 7, and the probe 4 is rotatable around a central axis 11 together with the first holding member 7 in the state where the second holding member 8 is loosened.

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 and a laser probe for irradiating a diseased part with laser light to treat the affected part.

[0002]

2. Description of the Related Art Conventionally, there has been used a laser treatment apparatus for performing incision, transpiration or hyperthermia treatment of an affected area by irradiation with laser light. This laser treatment apparatus guides laser light from a laser light source to a handpiece main body using a light guide such as an optical fiber, and directs the laser light to an affected area or the like via a probe detachably attached to this main body. It is configured to illuminate.

In such a prior art, since it is necessary to replace the probe when the probe is deteriorated or to measure the output of the laser beam emitted from the handpiece main body with the probe removed, Improvement of maintainability is desired. There are also cases where it is necessary to irradiate laser light to a difficult-to-see laser light irradiation site such as the side of a molar in a narrow oral cavity, and even in such a case,
Improvement in operability is desired because it is necessary to accurately irradiate the laser light irradiation site with laser light in a state where the operator can clearly visually recognize it from the outside.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a laser treatment apparatus and a laser probe with improved maintainability and operability.

[0005]

According to the present invention, a handpiece body to which laser light is guided from a laser light source, a probe for irradiating the laser light irradiation site with the laser light guided to the main body, and a head portion of the main body. A probe holder that is detachably attached to the probe holder and that holds the probe. The probe holder includes a first holding member and a second holding member, and the probe is held by the first holding member. By sandwiching the first holding member between the tip of the handpiece body and the second holding member, the probe can be fixed at an arbitrary angle with the longitudinal direction of the head portion as the central axis, and the probe and the first holding member can be fixed.
The holding member is a laser treatment apparatus that is detachably engaged with the second holding member by an elastic ring on the inner circumference of the second holding member. Further, the present invention is characterized in that a flow path for guiding the jetting fluid jetted to the laser beam irradiation site is formed on the outer circumference of the probe. Further, according to the present invention, the first holding member is composed of two portions that can be fitted to each other in the longitudinal direction, and the threaded portion formed on the inner circumference of the portion on the base end side thereof is coated with a polymer material. One end of the probe in the longitudinal direction is detachably attached. Further, according to the present invention, a probe is inserted into a first curved pipe having flexibility and shorter in the longitudinal direction than the probe so that both ends of the probe protrude from both ends of the first curved pipe. And the first curved pipe is a second curved pipe that is shorter in the longitudinal direction than the first curved pipe,
Two flow paths for guiding the injection fluid, which are inserted so that both ends of the first curved pipe project from both ends of the second curved pipe, and have an opening provided in the first holding member at the base end portion. Respectively, and the space between the probe and the first bending pipe, and the space between the first bending pipe and the second bending pipe are individually communicated with each other. 2 for guiding the injection fluid of the first holding member between the first holding member and the probe, between the first holding member and the first bending pipe, and between the first holding member and the second bending pipe. It is characterized in that a means for communicating the opening of the flow path of the book, the space between the probe and the first bending pipe, and the space between the first bending pipe and the second bending pipe in a sealed state are provided. Furthermore, the present invention is characterized in that a light guide material having a polycrystalline structure or a light guide material for scattering light is used for all or part of the probe. Further, according to the present invention, the light emitting end of the probe is a conical concave surface or convex surface or a conical convex surface with a rounded outer periphery of the probe, and these rounded conical concave surface or convex surface or conical surface is used. The irradiation light is emitted in the circumferential direction from the side in the longitudinal direction of the probe by reflection on the convex surface. Furthermore, the present invention is characterized in that the light emitting end of the probe is a tapered concave surface, and the irradiation light is irradiated in two directions from the side in the longitudinal direction of the probe by reflection on the concave surface. Furthermore, the present invention is characterized in that the light emitting end of the probe is tapered to have a tapered surface at the tip, and irradiation light is irradiated from one side in the longitudinal direction of the probe by reflection on the inclined surface. Furthermore, the present invention is characterized in that a concave surface is provided at the light incident end of the probe to enhance the scattering effect of irradiation light. Furthermore, the present invention is characterized in that the light emitting end of the probe is a hemispherical surface to collect the irradiation light. Further, according to the present invention, a core made of a material that transmits laser light is covered with a clad made of a material having a refractive index lower than that of the core over the entire length in the longitudinal direction of the core. Is a laser probe covered with a jacket made of a polymer material.

[0006]

According to the present invention, the laser light from the laser light source is supplied to the main body of the handpiece. A probe is detachably attached to the main body by a probe holder. The probe holder comprises first and second holding members, and the probe is held by the first holding member.
The first holding member holding the probe is sandwiched between the tip of the handpiece body and the second holding member. Therefore, when the second holding member is loosened from the body, the probe is attached to the head of the body. It can be rotated at any angle about the longitudinal center axis. As a result, the operator points the probe in a desired direction and tightens the second holding member, so that the probe is fixed to the tip of the handpiece body at a desired angle. In this manner, when the probe is fixed to the handpiece body by the first holding member and the second holding member, the probe is removably engaged by the elastic ring on the inner circumference of the second holding member. And the probe holder are prevented from coming off.

Further, according to the invention, a flow path for guiding a jetting fluid is formed on the outer periphery of the probe. It is possible to support the treatment by ejecting the ejection fluid to the irradiation site of the laser beam through such a flow path. Even if the flow path is provided on the outer periphery of the probe as described above, the probe is detachably provided on the handpiece main body as described above, and thus such probe replacement and sterilization treatment are easily performed. be able to.

Further according to the invention, the second holding member is
It is composed of two parts, and a screw part is formed on the inner circumference of the part on the base end side of one of them, so that the probe covered with the polymer material is connected, so that this probe is The probe can be easily screwed by screwing it into the portion, and the probe can be easily removed by rotating the probe in the direction opposite to the screwing direction to retract it. In this way, the probe holder can be detached from the handpiece body together with the probe, and only the probe can be detached from the probe holder, thus improving maintainability. Further, the holding state of the probe and the first holding member can be made more reliable.

Further in accordance with the present invention, the probe is inserted into the first curved pipe, and the second curved pipe is inserted into the first curved pipe and the probe. The curved pipe is shorter than the probe in the longitudinal direction, and the second curved pipe is shorter than the first curved pipe in the longitudinal direction. A gap is formed between the probe and the first curved pipe, and a gap is formed between the first curved pipe and the second curved pipe. These voids are individually communicated with the two flow paths of the first holding member via the communication holes, respectively, and the jetting fluid such as water or air supplied from the handpiece body is passed through the voids to the probe. Can be injected from the vicinity of the tip of the.

Further in accordance with the present invention, the distance between the first holding member and the probe, the distance between the first holding member and the first bending pipe, and the distance between the first holding member and the second bending pipe are equal to each other. Since means for sealing one communication in a state of communicating with each flow path through the communication hole is provided, it is possible to reliably prevent the injection fluid supplied from each flow path from leaking to the outside. .

Further in accordance with the present invention, a light guide material having a polycrystalline structure or a light guide material for scattering light is used for all or part of the probe. Thereby, the irradiation light emitted from the light emitting end of the probe can be uniformly diffused. Further, instead of the light guide material having the polycrystalline structure or the light guide material for scattering light, the irradiation light can be uniformly diffused even if the light emitting end of the probe is a concave surface.

Further, according to the invention, since the light emitting end of the probe is formed as a conical concave surface or a convex surface or a conical convex surface having a rounded boundary with the outer circumference of the probe, the light emitting end has these rounded shapes. The laser light can be reflected by the conical concave surface or convex surface or the conical convex surface, and the irradiation light can be irradiated in the circumferential direction from the side in the longitudinal direction of the probe.

Further, according to the invention, the light emitting end of the probe is a tapered concave surface. Laser light can be reflected by such a concave surface, and irradiation light can be irradiated in two directions from the side in the longitudinal direction of the probe.

Further, according to the invention, the light emitting end of the probe is formed in a tapered shape by providing a slanted surface at its tip. Laser light can be reflected by such an inclined surface, and the reflected light can be emitted from one side in the longitudinal direction of the probe.

Further according to the invention, the incident end of the probe is formed into a concave surface. In such a configuration in which incident light is dispersed by such a concave surface, a light guide material having a polycrystalline structure or a light guide material that scatters light is used for all or part of the above-described probe, or the light emitting end of the probe is a concave surface. It is possible to enhance the scattering effect of irradiation light.

Further according to the invention, a hemispherical surface is formed at the light emitting end of the probe. This allows the irradiation light to be condensed.

Further, according to the present invention, the core which transmits the laser beam is covered with the clad, and the clad is covered with the jacket only at the intermediate portion between the both ends in the longitudinal direction. Therefore, the jacket is peeled off and the clad is exposed at both ends in the longitudinal direction of the laser probe. When a laser beam is irradiated from one end portion in the longitudinal direction by such a laser probe to the affected area or the like, the jacket is damaged by the action of heat, scattered objects and impact force generated by this irradiation,
It is possible to prevent the fragments and the like from scattering or falling into the oral cavity or the like. Further, since the jacket does not exist at both ends in the longitudinal direction of the laser probe, it can be attached to the handpiece body to which the laser light is guided, for example, by using a probe holder or the like. This can be easily performed and the holding state with the first holding member can be made more reliable.

[0018]

1 is a sectional view showing a laser treatment apparatus according to an embodiment of the present invention. The laser treatment apparatus according to the present embodiment includes a handpiece body 3 to which laser light is supplied from a laser light source 1, a probe 4 that irradiates the laser light supplied to the body 3 to a laser light irradiation site, for example, an affected area, A probe holder 6 that is detachably attached to the head portion 5 of the main body 3 and holds the probe 4 is included.

The probe holder 6 includes a first holding member 7
And a second holding member 8, and the probe 4 is mounted and held on the first holding member 7. This first holding member 7
Between the tip 9 of the head portion 5 of the handpiece body 3 and the end portion 10 of the second holding member 8 so that the probe 4 forms an arbitrary angle with the longitudinal center axis 11 of the head portion 5. Fixed. The probe 4 and the first holding member 7 are integrated with the second holding member 8 by an O-ring made of rubber or synthetic resin mounted on the inner circumference of the second holding member or an elastic ring 13 made of a metal spring washer. Are rotatably engaged.

The handpiece body 3 and the probe holder 6 are made of metal such as stainless steel,
The handpiece body 3 is formed by fixing the head portion 5 and the grip portion 15 with screws 14, and the head portion 5 is formed by bending with respect to the axis of the grip portion 15. The laser light source 1 is built in the head portion 5 of the handpiece body 3 and realized by a semiconductor laser generating element. The laser light emitted from such a laser light generation source 1 is condensed by the condenser lens 16 at the light incident end 17 of the probe 4 and is emitted from the light emitting end 18.

One end in the longitudinal direction of a hose 19 made of a flexible material such as rubber is connected to the lower end of the handpiece body 3, and the other end of the hose 19 is connected to a fluid supply device 20. The fluid supply device 20 is provided with a water supply source 21 for pumping water as a jetting fluid and an air supply source 23 for pumping air as a jetting fluid.
Water and air that are respectively pumped from 1 and 23 are guided to two guide tubes 26 and 27 provided in the handpiece body 3 via the flexible tubes 24 and 25, and are absorbed by the head section 5. Probe 4 through two flow paths 28, 29
It is configured such that the light can be emitted from the vicinity of the light emitting end 18 of the.

A switch 30 is provided on the grip portion 15 of the handpiece body 3, and the laser light source 1 is generated by pressing an operation piece 33 covered by a cover piece 31.
Is activated and laser light is emitted.

An insert member 34 in which the flow paths 28 and 29 are formed is inserted into the head portion 5 of the handpiece body 3, and an inner screw 35 is provided on the inner periphery of the opening end of the insert member 34. The second holding member 8 is engraved on the inner screw 35.
The outer threaded portion 36 of the above is screwed. Thus, the second holding member 8
Is detachably attached to the insertion member 34. The first holding member 7 held by the second holding member 8 is held by the tip 9 and the end 10 as described above, and the tip 9 is inserted into the central hole 37 of the insertion member 34. Is formed at one end in the axial direction of. Insert member 3
The cylindrical portion 39 of the head portion 5 which surrounds
0 is formed, and the inner threaded portion 43 of the cap 41 is screwed into the outer threaded portion 40.
It is prevented from coming off by an inward convex portion 44 formed at the end portion on the side opposite to.

With this structure, the second holding member 8
In the loosened state, the end 10 is separated from the tip 9,
As a result, the holding state of the first holding member 7 is released.
Therefore, in a state in which the curved probe 4 is rotated around the central axis 11 in a desired direction, the second holding member 8 is again provided.
The probe 4 is fixed in that position by tightening. Since the probe 4 can be attached in any direction in this way, it is possible to change only the direction of the probe 4 without changing the position at which the grip portion 15 is gripped, whereby the light emitting end 18 is desired. Laser light can be irradiated toward the laser light irradiation site, and treatment can be supported. Further, since the first and second holding members 7 and 8 can be freely detached from the handpiece body 3, it is possible to easily measure the laser output and the sterilization process with the probe 4 removed, and maintainability is improved. Is improved.

As another embodiment of the present invention, as shown in FIG. 2, the laser light source 1 is provided in the fluid supply device 20 and the laser light is condensed through the light guiding fiber 45. 16, the laser beam of the laser light source 1 may be emitted from the light exit end 18 after being condensed and incident on the light entrance end 17 of the probe 4 as in the embodiment shown in FIG.

Also in such a structure, the probe 4, the first holding member 7, and the second holding member 8 can be attached to and detached from the head portion 1 of the handpiece body 3.

As yet another embodiment of the present invention, FIG.
As shown in (1), an annular groove 46 into which the elastic ring 13 is fitted may be formed, and as shown in FIG. 3 (2), the elastic ring 13 makes frictional contact. A right cylindrical sliding surface 47 may be formed. By providing the concave groove 46 or the sliding surface 47, when the second holding member 8 is detached from the handpiece body 3, It is possible to prevent the holding member 7 from falling together with the probe 4 and becoming soiled.

As shown in FIGS. 4 (1) and 4 (2), on the outer circumference of the probe 4 as shown in FIGS. 4 (1) and 4 (2), first and second curves are formed. A first space 50 is formed between the probe 4 and the first curved pipe 48 by the pipes 48 and 49, and the first curved pipe 4 is also formed.
8 and the second curved pipe 49 form a second space 51, and are supplied through the two flow paths 28 and 29 through the openings 53 and 54 formed in the first holding member 7. The incoming air and water may be jetted from the vicinity of the light emitting end 18 of the probe 4.

FIG. 5 is an enlarged cross-sectional view of the vicinity of the head portion 5 of still another embodiment of the present invention. On the inner periphery of the first holding member 7 on the base end side, a screw portion 55 having an internal thread is formed. On the other hand, the probe 4 includes a core 56 made of a material that transmits laser light, such as quartz glass, and a core 5.
6 and a cladding 58 made of a material having a refractive index lower than that of the core 56, and a jacket 58 made of a polymeric material that covers the cladding 57. The probe 4 thus coated with the polymeric material. Is screwed into the screw portion 55 and is detachably connected.

As another embodiment of the present invention, as shown in FIG. 6, the first holding member 7 is fitted with a fitting piece 59 formed with the threaded portion 55 and the fitting piece 59 is fitted coaxially. It may also be formed by the body part 60 to be worn.

As another embodiment of the present invention, as shown in FIG. 7, first and second gaps 50, 50 are formed on the outer circumference of the probe 4 by the first and second curved pipes 48, 49.
When 51 is formed, the openings 53 and 54 described above may be formed in the main body portion 60. In mounting the probe 4 on the first and second holding members 7 and 8 in the present embodiment, first, as shown in FIG. 8, the end portion of the probe 4 on the light incident end 17 side is screwed into the fitting piece 59. Then, the probe 4 is screwed to the fitting piece 59, and the first holding member 7 is attached to the body portion 60 to which the first and second bending pipes 48 and 49 are fitted.
The probe 4 is inserted into the body portion 60 to which the second holding member 8 is attached in this way from the end portion on the light emitting end 18 side, and is fitted in the fitting recess 61 formed in the inner periphery of the body portion 60. The fitting convex portion 63 formed on the fitting piece 59 is fitted, the fitting piece 59 is connected to the main body portion 60 in this way, and the probe 4 is assembled in the state in which it is retained by the first holding member 7. be able to.

Referring again to FIG. 7, the first curved pipe 48 is shorter than the probe 4 in the longitudinal direction, and the second curved pipe 49 is shorter than the first curved pipe 48 in the longitudinal direction. It When the first and second curved pipes 48 and 49 are attached to the probe 4,
Both ends of the probe 4 project from the first bending pipe 48, and both ends of the first bending pipe 48 project from the second bending pipe 49. In this embodiment, the first
Although both ends of the bending pipe 48 are projected from the second bending pipe 49, they may have substantially the same size or may be formed to be short.

With such a configuration, the first and second gaps 50, 50 formed between the probe 4 and the first bending pipe 48 and between the first bending pipe 48 and the second bending pipe 49, respectively. The openings 51 are open at both ends in the longitudinal direction. The jetting fluids supplied from the openings 53, 54 formed in the first holding member 8 and the main body portion 60 are individually supplied to the first and second gaps 50, 51. Therefore, as shown in FIG. 9, the first holding member 8
An annular groove is formed in the inner peripheral portion of the, and an annular seal member 64 made of a flexible and elastic material such as rubber is fitted in the annular groove, and the base end side (see FIG. 9). The seal member 64 on the left side achieves airtightness and watertightness between the first bending pipe 48 and the first holding member 7, and also the second bending pipe 4
9 and the first holding member 7 to achieve airtightness and watertightness,
In this way, the two gaps 50, 51 are made to communicate with the two openings 53, 54 in a sealed state to prevent air and water from leaking.

As another embodiment of the present invention, as shown in FIG. 10, in place of the seal member 64, through holes 66 and 67 are formed in the first holding member 7, and these through holes 66 and 67 are formed. 67 is filled with adhesives 68 and 69 to close the adhesive 68 on the base end side between the outer peripheral surface of the probe 4 and the inner peripheral surface of the first holding member 7 over the entire circumference in the circumferential direction, and also the tip. The adhesive 69 on the side may close the space between the outer peripheral surface of the first bending pipe 48 and the inner peripheral surface of the first holding member 7 over the entire circumference in the circumferential direction. Further, the outer diameters of the pipes 48 and 49 may be pressed into the inner peripheral surface of the first holding member 7.

FIG. 11 shows a probe 4 according to another embodiment of the present invention.
12 is a cross-sectional view showing a, and FIG. 12 is an enlarged cross-sectional view in the vicinity of the light output end 18 of the probe 4a. Probe 4a of this embodiment
The light scattering powder 70 is mixed in the vicinity of the light emitting end 18 of the core 56, and the laser light can be scattered and irradiated from the light emitting end 18. The end face of the light emitting end 18 is perpendicular to the axis of the light emitting end 18. As the light scattering powder 70, for example, powdery aluminum or the like is used. The light-scattering powder 70 may be mixed into the entire core 56, or instead of the light-scattering powder 70, the core 56 may be entirely or partially formed of a light guide having a polycrystalline structure. You may

FIG. 13 shows a probe 4 according to another embodiment of the present invention.
FIG. 14 is a cross-sectional view showing b, and FIG. 14 is an enlarged cross-sectional view near the light emitting end 18 of the probe 4b. Probe 4b of this embodiment
Is formed by retracting the light emitting end 18 of the core 56 inward from the end face 71 at one axial end of the clad 57, and the light scattering powder 70 similar to that in the above-described embodiment is mixed in the vicinity of the outgoing end 18. It Therefore, the emitted light scattered and emitted from the outgoing end 18 is suppressed from being diffused by the inner peripheral surface of the one end portion 71 of the clad 57, and the end surface 71 of the clad 57 is suppressed.
And the beam diameter can be made smaller than that of the probe 4a shown in FIGS. 11 and 12.

Also in such a probe 4b, the light scattering powder 70 may be dispersed and mixed in the entire core 56.

FIG. 15 is a sectional view showing a probe 4c according to another embodiment of the present invention, FIG. 16 is an enlarged sectional view in the vicinity of the light emitting end 18 of the probe 4c, and FIG. 17 is a probe 4c.
FIG. 3 is an enlarged cross-sectional view of the vicinity of a light entrance end 17 of FIG. The probe 4c of the present embodiment is
A predetermined axial length L1 exposed from the clad 57
The light scattering powder 70 is mixed over the range of.
Therefore, in the region L2 between the light-scattering layer 74 having the length L1 and the cladding 57, part of the laser light that exceeds the critical angle is emitted to the outside, and part of the laser light that is incident on the scattering layer 74a is scattered. The light is emitted from the light emitting end 18. Further, a spherical concave surface 75 is formed on the light incident end 17 of the core 56.
The laser light incident via 5 is guided in the core 56 with a large divergence angle. In this way, the scattering effect can be enhanced.

FIG. 18 is a cross-sectional view showing a probe 4d according to still another embodiment of the present invention, and FIG. 19 is an enlarged cross-sectional view near the light emitting end 18 of the probe 4d. The probe 4d of this embodiment has a spherical concave surface 7 on the light emitting end 18 of the core 56 thereof.
6 are formed. The concave surface 76 can also diffuse and irradiate the laser light.

FIG. 20 shows a probe 4 according to another embodiment of the present invention.
FIG. 21 is a cross-sectional view showing e, and FIG. 21 is an enlarged cross-sectional view near the light emitting end 18 of the probe 4e. Probe 4e of this embodiment
Is a conical concave surface 77 near the light emitting end 18 of the core 56.
The peripheral edge portion 78 of the concave surface 77 has a rounded shape in a cross section including its axis, and can diffuse the emitted light over a wide range as indicated by an arrow 79.

FIG. 22 shows a probe 4 according to another embodiment of the present invention.
FIG. 23 is a cross-sectional view showing f, and FIG. 23 is an enlarged cross-sectional view near the light emitting end 18 of the probe 4f. Probe 4f of this embodiment
Has a conical convex surface 80 formed at its light emitting end 18. By such reflection on the convex surface 80, the irradiation light can be diffused and irradiated in the circumferential direction from the longitudinal direction of the probe 4f.

FIG. 24 shows a probe 4 according to another embodiment of the present invention.
25 is a cross-sectional view showing g, and FIG. 25 is an enlarged cross-sectional view in the vicinity of the light output end 18 of the probe 4g. In the probe 4g of the present embodiment, a conical convex surface 81 is formed at the light output end 18,
A peripheral portion 84 where the projecting surface 81 and the outer peripheral surface 83 intersect is formed to be rounded. By forming the peripheral portion 84 of the conical projecting surface 81 into a round shape in this manner, the emitted light can be bent and irradiated from the side of the probe 4g at a large angle in the circumferential direction.

FIG. 26 shows a probe 4 according to another embodiment of the present invention.
FIG. 27 is a sectional view showing h, and FIG. 27 is an enlarged sectional view in the vicinity of the light emitting end 18 of the probe 4h. In the probe 4h of the present embodiment, a conical projecting surface 85 is formed on the light output end 18, and the core 56 includes a first portion 86 including the light output end 18, and the first portion 86 and an interval L3 in the axial direction. And a second portion 87 spaced apart from each other. First part 8
A spherical concave surface 88 is formed at the end portion of 6 opposite to the light emitting end 18. Each end face of the second portion 87 at both ends in the longitudinal direction is formed perpendicular to the central axis. With such a configuration, the laser light from the second portion 87 to the first portion 86 is bent by the concave surface 88 and further bent by the protruding surface 85, so that the scattering effect of the emitted light can be enhanced, and the light exit end 18 can be enhanced. As shown by the arrow 89, the light can be emitted to the opposite side from the virtual plane perpendicular to the axis, which can further enhance the diffusion of the emitted light.

FIG. 28 shows a probe 4 according to another embodiment of the present invention.
29 is a cross-sectional view showing i, and FIG. 29 is an enlarged cross-sectional view near the light emitting end 18 of the probe 4i. In the probe 4i of the present embodiment, a V-shaped concave surface 89 is formed at the light emitting end 18 thereof. With such a concave surface 89, it is possible to irradiate the emitted light toward the side indicated by the arrow 91 more strongly than the emitted light in the axial direction indicated by the arrow 90, and the laser can be efficiently applied to the inner peripheral surface of the root canal or the like. It can be irradiated with light. Further, the configurations of FIGS. 28 and 29 have an advantage that they can be processed more easily than the conical concave surface forming process of FIGS. 21 and 22.

FIG. 30 shows a probe 4 according to another embodiment of the present invention.
31 is a cross-sectional view showing j, and FIG. 31 is an enlarged perspective view near the light emitting end 18 of the probe 4j. The probe 4j of this embodiment has two tapered concave surfaces 9 at the light exit end 18.
3, 94 are formed. One concave surface 93 is the other concave surface 9
4, the laser beam reflected by the other concave surface 94 can be emitted from the one concave surface 93.
By forming these concave surfaces 93 and 94, it is not necessary to tilt the entire probe 4j at a large angle with respect to the laser light irradiation site, and irradiation light emitted from one concave surface 93 in a specific direction is emitted. Thus, it is possible to uniformly irradiate the laser light irradiation site in a wide range on the interproximal surface with the laser light.

FIG. 32 shows a probe 4 according to another embodiment of the present invention.
FIG. 33 is a cross-sectional view showing k, and FIG. 33 is an enlarged cross-sectional view near the light emitting end 18 of the probe 4k. A hemispherical convex surface 95 is formed on the light emitting end 18 of the probe 4k of this embodiment. With such a convex surface 95, laser light can be condensed and locally irradiated with large energy. Further, the concave surface 95 having a hemispherical shape facilitates insertion into the root canal.

[0047]

According to the present invention, the probe can be rotated at an arbitrary angle around the longitudinal center axis of the head portion of the main body. As a result, the operator points the probe in a desired direction, and by tightening the second holding member, the probe is fixed to the tip of the handpiece body at a desired angle.

Further, according to the present invention, a flow path for guiding the jetting fluid is formed on the outer periphery of the probe. It is possible to support the treatment by ejecting the ejection fluid to the irradiation site of the laser beam through such a flow path. Even if the flow path is provided on the outer periphery of the probe as described above, the probe is detachably provided on the handpiece main body as described above, and thus such probe replacement and sterilization treatment are easily performed. be able to.

Furthermore, according to the present invention, the second holding member is
It is composed of two parts, and a screw part is formed on the inner circumference of the part on the base end side of one of them, so that the probe covered with the polymer material is connected, so that this probe is The probe can be easily screwed by screwing it into the portion, and the probe can be easily removed by rotating the probe in the direction opposite to the screwing direction to retract it. In this way, the probe holder can be detached from the handpiece body together with the probe, and only the probe can be detached from the probe holder, thus improving maintainability.

Further, according to the present invention, the probe is inserted into the first curved pipe, and the second curved pipe is inserted into the first curved pipe and the probe. The curved pipe is shorter than the probe in the longitudinal direction, and the second curved pipe is shorter than the first curved pipe in the longitudinal direction. A gap is formed between the probe and the first curved pipe, and a gap is formed between the first curved pipe and the second curved pipe. These voids are individually communicated with the two flow paths of the first holding member via the communication holes, respectively, and the jetting fluid such as water or air supplied from the handpiece body is passed through the voids to the probe. Can be injected from the vicinity of the tip of the.

Further, according to the present invention, the distance between the first holding member and the probe, the distance between the first holding member and the first bending pipe, and the distance between the first holding member and the second bending pipe are equal to each other. Since means for sealing one communication in a state of communicating with each flow path through the communication hole is provided, it is possible to reliably prevent the injection fluid supplied from each flow path from leaking to the outside. .

Further, according to the present invention, a light guide material having a polycrystalline structure or a light guide material for scattering light is used for all or part of the probe. Thereby, the irradiation light emitted from the light emitting end of the probe can be uniformly diffused. Further, instead of the light guide material having the polycrystalline structure or the light guide material for scattering light, the irradiation light can be uniformly diffused even if the light emitting end of the probe is a concave surface.

Further, according to the present invention, the light emitting end of the probe is formed as a conical concave surface or a convex surface or a conical convex surface having a rounded boundary with the outer circumference of the probe. The laser light can be reflected by the conical concave surface or convex surface or the conical convex surface, and the irradiation light can be irradiated in the circumferential direction from the side in the longitudinal direction of the probe.

Further, according to the present invention, the light emitting end of the probe is formed into a tapered concave surface. Laser light can be reflected by such a concave surface, and irradiation light can be irradiated in two directions from the side in the longitudinal direction of the probe.

Further, according to the present invention, the light emitting end of the probe is formed in a tapered shape by providing an inclined surface at the tip thereof. Laser light can be reflected by such an inclined surface, and the reflected light can be emitted from one side in the longitudinal direction of the probe.

Further, according to the present invention, the incident end of the probe is formed as a concave surface. In such a configuration in which incident light is dispersed by such a concave surface, a light guide material having a polycrystalline structure or a light guide material that scatters light is used for all or part of the above-described probe, or the light emitting end of the probe is a concave surface. It is possible to enhance the scattering effect of irradiation light.

Further, according to the present invention, a hemispherical surface is formed at the light emitting end of the probe. This allows the irradiation light to be condensed.

Furthermore, according to the present invention, since the jacket is formed only at the intermediate portion between the both ends in the longitudinal direction of the laser probe, the cladding is exposed at the both ends.
As a result, damage to the jacket due to heat and scattered matter during laser light irradiation can be prevented, and the jacket can be prevented from scattering or falling into the oral cavity or the like. Moreover, since the jackets are not formed on both ends of the laser probe in the longitudinal direction, laser light can be emitted from either end or attached to the handpiece body, etc. Work can be performed easily.

[Brief description of drawings]

FIG. 1 is a sectional view showing a laser treatment apparatus according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a laser treatment apparatus according to another embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a mounting structure of a first holding member 7 and a second holding member 8, and FIG. 3 (1) shows a groove 46 in which the elastic ring 13 is fitted in the first holding member 7. 3B is a cross-sectional view of the first holding member 7 and the elastic ring 13 shown in FIG.
FIG. 4 is a cross-sectional view showing a structure in which the frictional contact is made.

4 is a cross-sectional view showing a mounting structure of a first holding member 7 and a second holding member 8 of another embodiment of the present invention, FIG.
Is the first holding member 7 in which the groove 46 and the opening 53 are formed.
4 (2) is a sectional view showing the first holding member 7 in which the sliding surface 47 and the opening 54 are formed.

FIG. 5 is an enlarged cross-sectional view around a head portion 5 of a handpiece according to another embodiment of the present invention.

FIG. 6 is a sectional view showing an attachment structure of a first holding member 7 and a probe 4 according to another embodiment of the present invention.

FIG. 7 is a cross-sectional view showing a mounting structure of a first holding member 7 and a probe 4 according to another embodiment of the present invention.

FIG. 8 is an exploded sectional view showing an assembling procedure of the first holding member 7 and the probe 4.

FIG. 9 is a sectional view showing a mounting structure of the first and second holding members 7 and 8 and the probe 4 according to another embodiment of the present invention.

FIG. 10 is a sectional view showing a mounting structure of the first and second holding members 7 and 8 and the probe 4 according to another embodiment of the present invention.

FIG. 11 is a sectional view showing a probe 4a according to another embodiment of the present invention.

FIG. 12 is an enlarged cross-sectional view near the light output end 18 of the probe 4a.

FIG. 13 is a sectional view showing a probe 4b according to another embodiment of the present invention.

FIG. 14 is an enlarged cross-sectional view of the vicinity of a light output end 18 of the probe 4b.

FIG. 15 is a sectional view showing a probe 4c according to another embodiment of the present invention.

FIG. 16 is an enlarged cross-sectional view of the vicinity of the light output end 18 of the probe 4c.

FIG. 17 is an enlarged cross-sectional view near the light incident end 17 of the probe 4c.

FIG. 18 is a sectional view showing a probe 4d according to another embodiment of the present invention.

FIG. 19 is an enlarged cross-sectional view of the vicinity of the light output end 18 of the probe 4d.

FIG. 20 is a sectional view showing a probe 4e according to another embodiment of the present invention.

FIG. 21 is an enlarged cross-sectional view near the light emitting end 18 of the probe 4e.

FIG. 22 is a sectional view showing a probe 4f according to another embodiment of the present invention.

FIG. 23 is an enlarged cross-sectional view of the vicinity of the light output end 18 of the probe 4f.

FIG. 24 is a sectional view showing a probe 4g according to another embodiment of the present invention.

FIG. 25 is an enlarged cross-sectional view of the vicinity of the light output end 18 of the probe 4g.

FIG. 26 is a sectional view showing a probe 4h according to another embodiment of the present invention.

FIG. 27 is an enlarged cross-sectional view of the vicinity of the light output end 18 of the probe 4h.

FIG. 28 is a sectional view showing a probe 4i according to another embodiment of the present invention.

FIG. 29 is an enlarged cross-sectional view near the light output end 18 of the probe 4i.

FIG. 30 is a sectional view showing a probe 4j according to another embodiment of the present invention.

FIG. 31 is an enlarged perspective view of the vicinity of the light output end 18 of the probe 4j.

FIG. 32 is a sectional view showing a probe 4k according to another embodiment of the present invention.

FIG. 33 is an enlarged cross-sectional view near the light output end 18 of the probe 4k.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Laser light source 3 Hand piece main body 4, 4a-4k Probe 5 Head part 6 Probe holder 7 1st holding member 8 2nd holding member 11 Central axis 13 Elastic ring 17 Light entrance end 18 Light exit end 46 Recessed groove 47 Sliding Moving surface 48 First curved pipe 49 Second curved pipe 50 First void 51 Second void 53, 54 Opening 55 Screw portion 56 Core 57 Clad 58 Jacket 59 Fitting piece 60 Main body portion 64 Seal member 70 Light scattering powder 75 , 76, 77, 88, 89, 93, 94 concave surface 80, 81, 85, 95 convex surface

Claims (12)

[Claims] 1. A handpiece body to which laser light is guided from a laser light source, a probe for irradiating the laser light irradiation site with the laser light guided to the main body, and a detachable mount on a head portion of the main body, A probe holder that holds the probe, wherein the probe holder comprises a first holding member and a second holding member, the probe is held by the first holding member, and the first holding member is used for the handpiece body. The probe can be fixed at an arbitrary angle with the longitudinal direction of the head portion as the central axis by sandwiching between the tip of the probe and the second holding member, and the probe and the first holding member are the second holding member. A laser treatment device which is detachably engaged with a second holding member by an elastic ring on the inner periphery of the laser treatment device. 2. The laser treatment apparatus according to claim 1, wherein a flow path for guiding a jetting fluid jetted to the laser beam irradiation site is formed on the outer circumference of the probe. 3. The first holding member is composed of two parts that can be fitted to each other in the longitudinal direction, and the threaded part formed on the inner circumference of the part on the base end side is covered with a polymer material. The laser treatment apparatus according to claim 1 or 2, wherein one end of the probe in the longitudinal direction is detachably attached. 4. The probe has flexibility and is inserted into a first curved pipe shorter than the probe in the longitudinal direction so that both ends of the probe protrude from both ends of the first curved pipe. And the first curved pipe is connected to the second curved pipe that is shorter in the longitudinal direction than the first curved pipe.
The two ends of the bending pipe are inserted so as to project from the both ends of the second bending pipe, and each of the two flow paths for guiding the injection fluid having the opening in the first holding member is inserted at the base end. 4. The laser treatment apparatus according to claim 2, wherein the space between the probe and the first curved pipe and the space between the first curved pipe and the second curved pipe are individually communicated with each other. 5. An injection fluid of the first holding member between the first holding member and the probe, between the first holding member and the first bending pipe, and between the first holding member and the second bending pipe. And a means for communicating the openings of the two flow paths for guiding the fluid, the space between the probe and the first bending pipe, and the space between the first bending pipe and the second bending pipe in a sealed state. The laser treatment apparatus according to claim 4. 6. The laser treatment apparatus according to claim 1, wherein a light guide body having a polycrystalline structure or a light guide material that scatters light is used for all or part of the probe. 7. The light output end of the probe is a conical concave surface or convex surface or a conical convex surface with a rounded outer periphery of the probe, and the conical concave surface or convex surface or conical surface with a rounded shape is formed. 6. The laser treatment apparatus according to claim 1, wherein the irradiation light is emitted in the circumferential direction from the side in the longitudinal direction of the probe by reflection on the convex surface. 8. The light emitting end of the probe is formed as a tapered concave surface, and the irradiation light is irradiated in two directions from the side in the longitudinal direction of the probe by reflection on the concave surface. The laser treatment device according to the above paragraph. 9. The light emitting end of the probe is tapered to have a tapered surface with a slanted surface at the tip, and irradiation light is irradiated from one side in the longitudinal direction of the probe by reflection on the slanted surface. Item 6. A laser treatment apparatus according to any one of Items 1 to 5. 10. The laser treatment apparatus according to claim 6, wherein a concave surface is provided at a light incident end of the probe to enhance a scattering effect of irradiation light. 11. The laser treatment apparatus according to claim 1, wherein the light emitting end of the probe is a hemispherical surface and the irradiation light is condensed. 12. A core made of a material that transmits laser light is covered by a clad made of a material having a refractive index lower than that of the core over the entire length in the longitudinal direction, and an intermediate portion between both longitudinal ends of the clad. Is covered by a jacket made of a polymer material.