KR20080097890A - Laser handpiece - Google Patents

Abstract

A laser handpiece simplifies a structure by forming a reflecting surface in an end of the optical fiber and changing a path after inputting the laser beam into the optical fiber. A main body(10) has an incident part(11) to which the laser beam is inputted and an output part(13) to which the laser beam is outputted. A lens is used for focusing the laser beam inputted to the incident part of the main body. Both ends of the optical fiber are an incident stage(31) and a reflective stage(32). An incline part is formed in the reflective stage and the reflective layer is coated on the incline part. The laser beam focused by the lens is inputted to the incident end. The incident laser beam is transmitted and the laser beam is reflected in the reflection stage and the laser beam is outputted to the output part of the main body.

Description

Laser handpiece {LASER HANDPIECE}

1 is a cross-sectional view showing a laser handpiece according to an embodiment of the present invention.

Figure 2 is a of the laser handpiece according to an embodiment of the present invention

Figure 3 is a laser handpiece according to an embodiment of the present invention

4 is a cross-sectional view showing a general laser handpiece.

<A brief description of the major reference numerals.

1 handpiece

     10 main unit

          11 entrance

          12 refraction

          13 exits

                13a tip

                13b optical path (reflective layer)

          14 Heat sink fin

          15 Air inlet

          16 Cooling water inlet

     20 lenses

     30 fiber optic

           31 entrance

           32 Reflective Stage (Reflective Layer)

     40 connectors

The present invention relates to a laser handpiece, and more particularly, by forming a reflecting surface at the end of the optical fiber and injecting the laser beam into the optical fiber, and then changing the path of the laser handpiece, the structure of the laser beam is simply replaced by the replacement of the optical fiber. A laser handpiece capable of changing the angle of refraction.

The laser handpiece is for performing a predetermined task by the user irradiating the laser beam output from the laser beam output device to a specific object accurately by the user. In particular, the medical laser handpiece irradiates the affected part with a laser beam to the affected part. It is used to perform procedures such as cutting and coagulation.

4 illustrates a general laser handpiece 100. Referring to FIG. 2, a general laser handpiece 100 is installed in a main body 110 and the main body 110, and is output from a laser output device. Lens 120 for focusing the reached laser beam, a path provided inside the main body 110 to reflect the laser beam focused through the lens 120 to change the path of the main body 110 The changer 130 is coupled to the front end of the main body 110 and includes a head tip 140 for emitting a laser beam whose path is changed by the path changer 130.

In the conventional laser handpiece 100 as described above, the path changing unit 130 is configured by installing a reflector inside the main body 110. The reflector constituting the path changing unit 130 should be accurately mounted inside the main body 110 so as to accurately change the path of the laser beam.

However, an error occurs in the mounting of the reflector during the processing of the main body 110 and the assembly of the reflector.

On the other hand, in order to change the angle of refraction of the laser beam, the installation angle of the reflector should be changed. In the case of the conventional laser handpiece, it is difficult to change the angle of the reflector.

In general, when it is necessary to cool the affected area in the process of treating the affected area with the laser handpiece, the cooling water is injected into the affected area. In the case of a conventional laser handpiece, a line (not shown) for supplying coolant is provided with a head tip ( Separately from 140 is provided on the outside of the body. This is because when the coolant contacts the reflector constituting the path changing unit 130 of the laser beam, the path of the laser beam reflected by the reflector is changed.

The present invention was conceived by recognizing the above points, the object of the present invention is to form a reflective surface at the end of the optical fiber and to inject a laser beam into the optical fiber and then to change the path, the structure is simple and replacement of the optical fiber is simple It is to provide a laser handpiece that can change the refractive angle of the laser beam.

In addition, an additional object of the present invention is a laser handpiece having a structure in which a cooling water for cooling the affected part is sprayed through a head tip from which the laser beam is emitted by preventing the reflective surface for changing the path of the laser beam from being exposed. To provide.

In order to achieve the above object, the laser handpiece according to the present invention includes a laser handpiece for receiving a laser beam and outputting the light to a target position, the incidence part of which the laser beam is incident and the emission part from which the laser beam is emitted. The main body, a lens for focusing the laser beam incident on the incidence portion of the main body, and both ends are the incidence end and the reflecting end, wherein the reflecting end forms an inclined surface at the end thereof and the inclined surface is the reflecting surface. An optical fiber installed inside the main body such that a reflective layer is coated on the laser beam, and the laser beam focused by the lens is incident on the incidence end, and the incident laser beam is transmitted and reflected on the reflecting end and exits to the exit part of the main body. Characterized in that configured to include.

In addition, the laser handpiece according to the present invention, characterized in that the heat radiation fin is formed on the outer surface of the main body between the lens and the incident end of the optical fiber.

In addition, the laser handpiece according to the present invention is characterized in that the inlet portion of the main body is formed with an air inlet for injecting cooling air is connected to a predetermined air supply source.

In addition, in the laser handpiece according to the present invention, the interior of the main body is isolated from each other at a predetermined position between the incidence end and the reflecting end of the optical fiber, the cooling water for the cooling water is injected into the main body the side where the reflecting end of the optical fiber is located An injection port is formed and connected to a predetermined cooling water supply source, and the cooling water injected into the main body is sprayed through a passage of the exit part of the main body through which the laser beam is emitted.

In addition, the laser handpiece according to the present invention, the optical fiber is provided with a connector at a predetermined position between the incidence end and the reflective end, the optical fiber is detachably coupled to the inside of the main body by detachably coupling the connector inside the main body. Possible installation, the isolation of the body is characterized in that made by the coupling of the connector.

In addition, the laser handpiece according to the present invention, the tip of the exit portion of the main body is formed of a material that is bent, the optical path for passing the laser beam reflected from the reflective end of the optical fiber is formed inside the tip, A reflective layer is formed on the surface of the optical path.

Hereinafter, with reference to the embodiment shown in the drawings will be described in detail a laser handpiece according to the present invention.

1 is a cross-sectional view showing a laser handpiece according to an embodiment of the present invention, Figure 2 is a cross-sectional view conceptually showing a reflective end of the optical fiber of the laser handpiece according to an embodiment of the present invention, Figure 3 Cross-sectional view conceptually illustrating the operation of the exit portion of the laser handpiece according to an embodiment of the present invention.

The laser handpiece 1 according to the present invention is for receiving a laser beam generated by a laser output device (not shown in the drawing) and outputting it to a target position such as the affected part of the skin or teeth. 10, a lens 20, an optical fiber 30, and a connector 40.

The main body 10 is to form a case for emitting the incident laser beam, the lens 20, the optical fiber 30 and the connector 40 is installed therein. The user grips the main body 10 to handle the laser handpiece 1.

Referring to the drawings, the main body 10 is connected to a laser output device (not shown in the drawing) or a laser waveguide device connected to the output device, and an incident part 11 into which a laser beam is incident, and the optical fiber 30. A refracting part 12 connected to the incident part 11 and having a refracted structure corresponding to a traveling path of the laser beam reflected and refracted by the reflecting end 32 formed in the reflecting end 32 of the optical fiber 30. The laser beam reflected and refracted by () is emitted and is composed of an emission part 13 connected to the refraction part 12.

On the other hand, heat is generated by the laser beam that is focused and refracted by the lens 20 and the optical fiber 30 and passes through the main body 10. The main body 10 has a heat radiation fin ( 14). Referring to the drawings, the heat radiating fins 14 are formed on the outer surface of the main body between the lens 20 and the incidence end 31 of the optical fiber 30. Similarly, cooling air is injected and discharged into the main body 10 to effectively cool the heat generated by the laser beam. That is, an air inlet 15 for injecting cooling air is formed in the incidence part 11 of the main body 10 and is connected to a predetermined air supply source A.

On the other hand, heat is generated in the affected part to which the laser beam emitted to the emitting part 13 of the main body 10 is irradiated, and in some cases it is necessary to cool the heat of the affected part. The present invention is characterized in that the cooling water for cooling the heat generated by the laser beam emitted to the exit unit 13 irradiated to the affected area as described above is configured to be sprayed through the exit unit (13). To this end, the coolant should be introduced into the exit portion 13 side of the main body 10, and the introduced coolant should not flow into the incidence portion 11 side of the main body 10. As described above, the present invention has a structure in which the coolant flows into the outlet 13 of the main body 10 and is separated therebetween so that the coolant does not flow into the incident part 11. That is, referring to the drawings, the main body 10 is isolated from each other at a predetermined position between the incident end 31 and the reflective end 32 of the optical fiber 30. The isolation of the main body 10 is made while the connector 40 for detachably coupling the optical fiber 30 to the inside of the main body 10 is coupled to the inside of the main body 10. In the main body 10 which is isolated by the connector 40 as described above, a cooling water inlet 16 for injecting cooling water is formed at the side where the reflecting end 32 of the optical fiber 30 is located, thereby providing a predetermined cooling water supply source. Is connected to (W). Cooling water injected from the cooling water supply source W into the main body 10 is sprayed together with a laser beam through a passage of the output unit 13 of the main body from which the laser beam is emitted.

Meanwhile, the emission direction of the laser beam whose path is refracted by the reflective end 32 of the optical fiber 30 is fixedly determined. In order to change the direction, the optical fiber having the reflective end 32 having a different reflection angle is formed. 30) Replacement is cumbersome. Therefore, the present invention is characterized in that the front end 13a of the exit portion 13 is formed of a material that is bent to change the exit path of the laser beam within a certain range without replacing the optical fiber 30. . That is, the front end 13a of the exit portion 13 of the main body 10 is formed of a bent material such as plastic or a metal having excellent ductility, and the reflection end of the optical fiber 30 inside the front end 13a. An optical path 13b for passing the laser beam reflected at 32 is formed, and a reflective layer coated with a material having excellent reflectance such as mercury or gold is formed on the surface of the optical path 13b. Therefore, the laser beam incident on the exit portion 13 by refracting at the reflecting end 32 of the optical fiber 30 has its optical path 13b in a state where the tip 13a of the exit portion 13 is bent. It proceeds while being reflected from the reflective layer formed in the. Particularly, in the present invention, the optical path 13b of the front end 13a of the output part 13 is formed as a reflective layer, so that the laser beam is reflected from the reflective layer even though the laser beam is not accurately incident on the output part 13 side. FIG. 3 conceptually illustrates a state in which the laser beam is reflected from the reflective layer of the optical path 13b while the tip of the tip 13a of the output part 13 is bent or extended as described above.

The lens 20 is for focusing the laser beam such that the laser beam incident to the incidence portion of the main body 10 is incident into the incidence end 31 of the optical fiber 30.

The optical fiber 30 is focused by the lens 20 and transmits a laser beam incident to the incidence end 31, and refracts the transmitted laser beam toward the exit portion 13 of the main body 10. . Referring to the drawings, the optical fiber 30 has both ends of the incidence end 31 and the reflecting end 32. The reflecting end 32 forms an inclined surface at an end thereof and the inclined surface is a reflective surface. On the inclined surface, a reflective layer coated with a highly reflective material such as mercury or gold is formed. In the optical fiber 30 formed as described above, the laser beam focused by the lens 20 is incident on the incident end 31, and the incident laser beam is transmitted and reflected by the reflecting end 32 to the main body. It is installed inside the main body 10 to be emitted to the exit unit 13 of the (10). The angle at which the laser beam is refracted by the reflection at the reflection end 32 is determined by the inclination angle of the reflection end 32. The present invention replaces various optical fibers 30 having different inclination angles of the reflection end 32. It is simply configured to change the refraction angle of the laser beam. To this end, the optical fiber 30 is provided with a connector 40 at a predetermined position between the incident end 31 and the reflective end 32, the optical fiber 30 is connected to the connector 40 of the main body 10 Removably coupled to the inside is detachably installed in the interior of the body (10). In particular, the isolation of the main body 10 made for the isolation of the coolant as described above is made by the coupling of the connector 40.

According to the above configuration, the laser handpiece according to the present invention forms a reflective surface at the end of the optical fiber, injects a laser beam into the optical fiber, and then changes its path, thereby simplifying the structure and simply replacing the optical fiber. It has the advantage of changing the angle of refraction.

In addition, the laser handpiece according to the present invention has a structure capable of spraying the coolant for cooling the affected part through the head tip from which the laser beam is emitted by preventing the reflective surface for changing the path of the laser beam from being exposed.

The laser handpiece described above and shown in the drawings is only one embodiment for carrying out the invention, and should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is defined only by the matters set forth in the claims below, and examples of improvement and modification without departing from the gist of the present invention are obvious to those skilled in the art. It will be said to belong to the protection scope of the present invention.

Claims (7)

In the laser handpiece for receiving the laser beam and exiting to the target position, A main body having an incident part to which the laser beam is incident and an exit part to which the laser beam is emitted, A lens for focusing the laser beam incident on the incident part of the main body; Each end is an incidence end and a reflection end, and the reflecting end forms an inclined surface at the end thereof, and a reflecting layer is coated on the inclined surface so that the inclined surface is a reflecting surface, and the laser beam focused by the lens enters the incidence end. And an optical fiber installed inside the main body such that the incident laser beam is transmitted and is reflected by the reflecting end to be emitted to the exiting part of the main body. The method of claim 1, And a heat dissipation fin formed on an outer surface of the main body between the lens and the incident end of the optical fiber. The method according to claim 1 or 2, The laser handpiece, characterized in that the inlet portion of the main body is formed with an air inlet for injecting the cooling air is connected to a predetermined air supply source. The method of claim 3, The interior of the body is isolated from each other at a predetermined position between the incident end and the reflective end of the optical fiber, The main body is formed with a coolant inlet for injecting coolant to the reflection end of the optical fiber is connected to a predetermined coolant supply source, Cooling water injected into the inside of the main body is a laser handpiece, characterized in that the injection through the passage of the exit portion of the main body where the laser beam is emitted. The method according to claim 1 or 2, The interior of the body is isolated from each other at a predetermined position between the incident end and the reflective end of the optical fiber, The main body is formed with a coolant inlet for injecting coolant to the reflection end of the optical fiber is connected to a predetermined coolant supply source, Cooling water injected into the inside of the main body is a laser handpiece, characterized in that the injection through the passage of the exit portion of the main body where the laser beam is emitted. The method of claim 5, The optical fiber is provided with a connector at a predetermined position between the incident end and the reflective end, The optical fiber is detachably coupled to the inside of the main body to be detachably installed inside the main body, Isolation of the body is laser handpiece, characterized in that by the coupling of the connector. The method according to claim 1 or 2, The tip of the exit portion of the main body is formed of a bent material, Inside the tip is formed an optical path for passing the laser beam reflected from the reflective end of the optical fiber, A laser handpiece, characterized in that a reflective layer is formed on the surface of the optical path.

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