Dual output switchable laser device and system

Abstract

The utility model relates to a kind of double-output switchable laser devices, including reflecting unit, rotating unit and fixed unit, the reflecting unit is fixed on rotating unit, the rotating unit drives reflecting unit to switch between standby position and working position, the fixed unit is when reflecting unit is in standby position or working position reflecting unit is fixed;The rotating unit includes steering wheel and first rocker arm, the steering wheel controls first rocker arm and rotates along predetermined circular arc path, the first rocker arm is fixedly connected with reflecting unit, drives reflecting unit to switch between standby position and working position;When reflecting unit is located in working position, change laser propagation light path direction;When reflecting unit is located in standby position, laser propagation light path direction remains unchanged.The double-output switchable laser device of the utility model can be freely switched in different use scenarios Light arm output mode and two kinds of mode of fiber output.

Description

Technical Field

[0001] This utility model relates to the field of laser technology, and in particular to a dual-output switchable laser device. Background Technology

[0002] In clinical medicine, laser systems used for treatment in the 2.7-3μm wavelength range commonly employ two output methods: optical guide arm output and fiber optic output. These two methods differ in mechanical structure, optical performance, and clinical applications, yet they complement each other. Optical guide arm output utilizes highly reflective lenses (such as gold-plated dielectric films) to transmit light through a multi-jointed robotic arm. It is virtually unrestricted by wavelength and supports high-power output, making it suitable for applications such as skin abrasion, deep tissue resection, open surgery (e.g., plastic surgery), and treatment of large spot areas. Fiber optic output utilizes total internal reflection to transmit light within a fiber core (such as fluoride glass or a hollow structure). Its flexible transmission and bendability (limited radius of curvature) make it suitable for use in confined spaces such as endoscopes. It can be applied in dental caries treatment, minimally invasive ENT surgery, endoscopic / laparoscopic surgery (e.g., urology), and fine manipulation of small spot areas (e.g., vocal cord polyp vaporization).

[0003] However, existing laser output methods are limited. The light guide arm output method has a limited range of motion and occupies a large volume, while the fiber optic output method is limited by the fiber damage threshold. When the loss is large, the entire fiber needs to be replaced in time. Both methods have limited application scenarios. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a dual-output switchable laser system that can quickly switch between two output modes, namely the light guide arm output mode and the fiber optic output mode, in different usage scenarios, thereby covering a wider range of clinical needs and avoiding the simplification of equipment.

[0005] A dual-output switchable laser device for changing the direction of laser propagation path includes a reflecting unit, a rotating unit, and a fixing unit. The reflecting unit is fixed on the rotating unit, and the rotating unit drives the reflecting unit to switch between a standby position and a working position. The fixing unit fixes the reflecting unit when it is in either the standby or working position. The rotating unit includes a servo motor and a first rocker arm. The servo motor is connected to the first rocker arm and controls the first rocker arm to rotate along a predetermined arc path. The first rocker arm drives the reflecting unit to switch between a standby position and a working position. The end of the predetermined arc path closer to the optical path is the working position, and the end farther from the optical path is the standby position. When the reflecting unit is in the working position, the direction of laser propagation path is changed; when the reflecting unit is in the standby position, the direction of laser propagation path remains unchanged.

[0006] Furthermore, it also includes a second rocker arm. The head end of the first rocker arm is connected to a servo motor, the tail end of the first rocker arm is connected to the head end of the second rocker arm, and the tail end of the second rocker arm is fixedly connected to the reflecting unit. Thus, the servo motor controls the first rocker arm to rotate along a predetermined arc path, driving the second rocker arm to move and thereby causing the reflecting unit to switch between a standby position and a working position on a predetermined straight track. The end of the predetermined track closer to the laser is the working position, and the end of the predetermined track farther from the laser is the standby position.

[0007] Furthermore, the fixing unit includes two limit switches, which are respectively set in the standby position and the working position. When the reflector is in the standby position or the working position, the limit switches are triggered to stop the power supply to the servo motor, thereby stopping the power supply to the first rocker arm.

[0008] Furthermore, the fixing unit also includes two side magnets, which are respectively disposed in the standby position and the working position, close to one end of the reflective unit along the outer side of the predetermined arc path. When the reflective unit is in the standby position or the working position, the side magnets attract the nearest end of the reflective unit to keep the reflective unit in a stable position.

[0009] Furthermore, the fixing unit also includes a central magnet, which is located at the center of the predetermined arc path. When the reflecting unit is in the standby or working position, the central magnet attracts one end of the mirror mount along the inner side of the predetermined arc path to keep the reflecting unit in a stable position.

[0010] Furthermore, the reflecting unit includes a mirror base and a reflector, the reflector being fixed on the mirror base, and the two ends of the mirror base along the line of intersection between the plane of the mirror base and the plane of the reflector being made of a magnetically attractive material.

[0011] This utility model also provides a dual-output switchable laser system, including a total reflection mirror, a laser working medium, a xenon lamp, an output mirror, a coupling lens, an optical fiber, the dual-output switchable laser device, and a light guide arm; the total reflection mirror, the laser working medium, the xenon lamp, and the output mirror form an initial laser source and continuously emit an initial laser beam. When the dual-output switchable laser device is in standby position, the initial laser beam is focused and coupled into the optical fiber after passing through the coupling lens to form the first output beam. When the dual-output switchable laser device is in the working position, the initial laser beam is reflected by the dual-output switchable laser device and enters the light guide arm. After multiple reflections within the light guide arm, it is output from the light guide arm outlet to form the second output beam. The dual-output switchable laser device rotates along a predetermined arc path, with the end of the predetermined arc path closer to the optical path being the working position and the end farther from the optical path being the standby position.

[0012] Furthermore, it also includes a 45° total reflection mirror, which is disposed between the dual-output switchable laser device and the light guide arm to change the direction of the initial laser beam incident on the 45° total reflection mirror so that the output direction of the second output beam is the same as that of the first output beam.

[0013] Furthermore, when it is necessary to change the position of the reflector, the limit switch at the standby or working position of the reflector is activated. At this time, the servo motor is powered again, providing the first rocker arm with a power greater than that of the side magnet and the center magnet, thereby driving the first rocker arm to rotate, and thus causing the reflector to move from one end of the predetermined track to the other end.

[0014] Furthermore, in the standby or working position, the plane of the mirror base is parallel to the combined laser beam, and the predetermined track is located in the plane of the mirror base without intersecting with the combined laser beam, so that the mirror base will not block the propagation of the combined laser beam when it is in motion or stationary.

[0015] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the dual-output switchable laser system described in this utility model; Figure 2 This is a structural diagram of the dual-output switchable laser device in Embodiment 1 of this utility model; Figure 3 This is a structural diagram of the dual-output switchable laser device in Embodiment 2 of this utility model. Detailed Implementation

[0017] Example 1 Based on this, please refer to Figure 1 This utility model provides a dual-output switchable laser system, including a total reflection mirror 1, a laser working substance 2, a xenon lamp 3, an output mirror 4, a shutter 5, a beam combiner 6, an indicator light 7, an energy detector 8, a coupling lens 9, a flange 10, an optical fiber 11, a dual-output switchable laser device 12, a 45° total reflection mirror 13, a window 14, and a light guide arm 15.

[0018] The total reflection mirror 1, the laser working medium 2, the xenon lamp 3, and the output mirror 4 form an initial laser source that continuously emits an initial laser beam. Specifically, the xenon lamp 3 irradiates the laser working medium 2, exciting it to generate light waves. These light waves oscillate in the resonant cavity formed by the total reflection mirror 1 and the output mirror 4 to form laser emission. The wavelength of the initial laser beam is 2940 nm.

[0019] The shutter 5 is adjustable and used to control the initial laser beam intensity of the initial laser source.

[0020] A portion of the initial laser beam is transmitted through the beam combiner 6, while the other portion is reflected by the beam combiner 6 and enters the energy detector 8 for detection. This real-time monitoring of the initial laser beam's energy intensity prevents excessive energy from damaging subsequent optical components. Specifically, the energy detector 8 employs the pyroelectric principle, preventing excessively high energy intensity in the initial laser beam by real-time detection of energy changes. This also avoids interference from the energy of other beams in monitoring the initial laser beam's energy.

[0021] The indicator light 7 continuously outputs an indicator beam, which, after being reflected by the beam combiner 6, merges with the initial laser beam of the transmission beam combiner 6 to form a combined laser beam. Unlike the initial laser beam, which is difficult to observe with the naked eye in the propagation path, the indicator beam has a wavelength of 532nm, which can be easily observed with the naked eye in the propagation process, thereby indirectly enabling the combined laser beam to be directly observed with the naked eye.

[0022] Please see Figure 2 The dual-output switchable laser device 12 includes a reflecting unit 121, a rotating unit 122, and a fixing unit 123. The reflecting unit 121 is fixed on the rotating unit 122, and the rotating unit 122 drives the reflecting unit 121 to switch between a standby position and a working position. The fixing unit 123 fixes the reflecting unit 121 when it is in the standby or working position. It is understood that... Figure 2 The solid line shows the structure of the dual-output switchable laser device 12 in the standby position, and the dashed line shows the structure of the dual-output switchable laser device 12 in the working position.

[0023] The reflecting unit 121 includes a mirror mount 1211 and a reflecting mirror 1212. The reflecting mirror 1212 is fixed on the mirror mount 1211. The two ends of the mirror mount 1211 along the intersection line of the plane of the mirror mount 1211 and the plane of the reflecting mirror 1212 are made of a magnetically attractive material, such as iron or a magnet. The reflecting mirror 1212 is coated with a 532nm & 2940nm high reflectivity film, enabling it to reflect 532nm and 2940nm light beams with high reflectivity. The plane of the reflecting mirror 1212 forms a 45° angle with the direction of the combined laser beam. Preferably, the plane of the reflecting mirror 1212 is perpendicular to the plane of the mirror mount 1211.

[0024] The rotating unit 122 includes a servo motor 1221 and a first rocker arm 1222. The servo motor 1221 is connected to the first rocker arm 1222 and controls the first rocker arm 1222 to rotate along a predetermined arc path. The first rocker arm 1222 is fixedly connected to the mirror mount 1211 and drives the mirror mount 1211 to switch between a standby position and a working position. The end of the predetermined arc path closer to the optical path is the working position, and the end farther from the optical path is the standby position. When the rotating unit 122 is fixed in the working position or the standby position, the power supply to the rotating unit 122 is stopped.

[0025] The fixing unit 123 includes two limit switches 1231, two side magnets 1232, and a central magnet 1233. The two limit switches 1231 are respectively located at the standby position and the working position, near the outer end of the mirror mount 1211 along the predetermined arc path. When the mirror mount 1211 is in the standby position or the working position on the predetermined track A, the limit switches 1231 are triggered to stop the power supply to the servo motor 1221, thereby stopping the power supply to the first rocker arm 1222. The end of the predetermined track A closer to the optical path is the working position, and the end farther from the optical path is the standby position. Side magnets 1232 are respectively disposed in the standby position and the working position, near one end of the mirror base 1211 along the outer edge of the predetermined arc path. When the mirror base 1211 is in the standby position or the working position, the side magnets 1232 attract the outer edge of the mirror base 1211 along the predetermined arc path, keeping the mirror base 1211 in a stable position. The center magnet 1233 is disposed at the center of the predetermined arc path. When the mirror base 1211 is in the standby position or the working position, the center magnet 1233 attracts the inner edge of the mirror base 1211 along the predetermined arc path, keeping the mirror base 1211 in a stable position. It can be understood that when the mirror base 1211 moves from the standby position to the working position, the limit switch 1231 in the working position is triggered to stop the power supply to the mirror base 1211, and the side magnets 1232 in the working position use magnetic force to quickly stop the moving mirror base 1211.

[0026] When the position of the mirror mount 1211 needs to be changed, the limit switch 1231 at the standby or working position of the mirror mount 1211 is activated. At this time, the servo motor 1221 is re-powered, providing the first rocker arm 1222 with a force greater than that of the side magnet 1232 and the central magnet 1233, thereby driving the first rocker arm 1222 to rotate. This causes the mirror mount 1211 to move from one end of the predetermined arc path to the other end and fall back into the predetermined track A. The activation of the limit switch 1231 can be done manually or intelligently via command, and can be set according to specific circumstances in actual production. In the standby or working position, the plane of the mirror mount 1211 is parallel to the combined laser beam, and the predetermined arc path does not intersect with the combined laser beam, so that the mirror mount 1211 will not block the beam whether it is moving or stationary.

[0027] When the mirror mount 1211 is in the standby position, the reflector 1212 is not in the optical path, and the combined laser beam continues to propagate along the original path; The coupling lens 9 focuses and couples the combined laser beam to the optical fiber 11 for output.

[0028] The flange 10 is disposed between the coupling lens 9 and the optical fiber 11, and is used to provide a buffered and sealed connection between the coupling lens 9 and the optical fiber 11.

[0029] When the mirror mount 1211 is in the working position, the reflector 1212 reflects the combined laser beam to the 45° total reflection mirror 13; The plane of the 45° total reflection mirror 13 is parallel to the plane of the reflector 1212, reflecting the combined laser beam to the light guide arm 15 for output.

[0030] The window 14 is positioned between the 45° total reflection mirror 13 and the light guide arm 15 to prevent external light beams from entering the light guide arm 15 and causing interference.

[0031] Specifically, when the dual-output switchable laser device 12 is in the standby position, the combined laser beam is transmitted through the coupling lens 9 and then output through the flange 10 via the optical fiber 11 to form the first output beam; when the dual-output switchable laser device 12 is in the working position, the combined laser beam is reflected by the reflector 1212 and transmitted to the 45° total reflection mirror 13, and after being reflected again, it enters the light guide arm 15 through the window 14, and is output from the light guide arm outlet through multiple reflections within the light guide arm 15 to form the second output beam.

[0032] It is understandable that a 45° total reflection mirror 13 is not necessarily required. Its purpose is to change the direction of the combined laser beam so that the second output beam can be output in the same direction as the first output beam, which is convenient for use in actual medical operations.

[0033] Example 2 In practical applications, it was found that the dual-output switchable laser device of Embodiment 1 occupied too much space, resulting in increased costs. Therefore, Embodiment 2 attempts to improve the rotating unit in the dual-output switchable laser device by changing the arc rotation of the reflector relative to the plane of the mirror base to a translational motion parallel to the plane of the mirror base, thereby reducing the space occupied by the dual-output switchable laser device.

[0034] Please see Figure 3 The dual-output switchable laser device 12 includes a reflecting unit 121, a rotating unit 122, and a fixing unit 123. The reflecting unit 121 is fixed on the rotating unit 122, and the rotating unit 122 drives the reflecting unit 121 to switch between a standby position and a working position. The fixing unit 123 fixes the reflecting unit 121 when it is in the standby or working position. It is understood that... Figure 2 The solid line shows the structure of the dual-output switchable laser device 12 in the standby position, and the dashed line shows the structure of the dual-output switchable laser device 12 in the working position.

[0035] The reflecting unit 121 includes a mirror mount 1211 and a reflecting mirror 1212. The reflecting mirror 1212 is fixed on the mirror mount 1211. The two ends of the mirror mount 1211 along the intersection line of the plane of the mirror mount 1211 and the plane of the reflecting mirror 1212 are made of a magnetically attractive material, such as iron or a magnet. The reflecting mirror 1212 is coated with a 532nm & 2940nm high reflectivity film, enabling it to reflect 532nm and 2940nm light beams with high reflectivity. The plane of the reflecting mirror 1212 forms a 45° angle with the direction of the combined laser beam. Preferably, the plane of the reflecting mirror 1212 is perpendicular to the plane of the mirror mount 1211.

[0036] The rotating unit 122 includes a servo motor 1221, a first rocker arm 1222, and a second rocker arm 1223. The first end of the first rocker arm 1222 is connected to the servo motor 1221, and the end of the first rocker arm 1222 is connected to the first end of the second rocker arm 1223. The end of the second rocker arm 1223 is fixedly connected to the mirror mount 1211. Thus, the servo motor 1221 controls the first rocker arm 1222 to rotate along a predetermined arc path, driving the second rocker arm 1223 to move and thereby causing the mirror mount 1211 to switch between a standby position and a working position on a predetermined track A. The end of the predetermined track A closer to the optical path is the working position, and the end farther from the optical path is the standby position. When the rotating unit 122 is fixed in the working position or the standby position, the power supply to the rotating unit 122 is stopped. It is understandable that, through the rotational transmission of the two rocker arms 1222 and 1223, the curvilinear motion of the first rocker arm 1222 rotating along a predetermined arc path can be converted into the linear motion of the mirror mount 1211 translating along a predetermined track A. The predetermined arc path and the predetermined track A are both located in the plane of the mirror mount 1211, and this plane is parallel to the plane of the optical path.

[0037] The fixing unit 123 includes two limit switches 1231 and two side magnets 1232. The two limit switches 1231 are respectively set at the standby position and the working position of the predetermined track A. When the mirror mount 1211 is in the standby position or the working position, the limit switches 1231 are triggered to stop the power supply to the servo motor 1221, thereby stopping the power supply to the first rocker arm 1222. The two side magnets 1232 are respectively set at both ends of the predetermined track A. When the mirror mount 1211 is in the standby position or the working position, the side magnets 1232 attract the nearest end of the mirror mount 1211 to keep the mirror mount 1211 in a stable position. It can be understood that when the mirror mount 1211 moves from the standby position to the working position, the limit switch 1231 in the working position is triggered to stop the power supply to the mirror mount 1211, and the side magnets 1232 in the working position use magnetic force to quickly stop the moving mirror mount 1211.

[0038] When the position of the mirror mount 1211 needs to be changed, the limit switch 1231 at the standby or working position of the mirror mount 1211 is activated. At this time, the servo motor 1221 is re-powered, providing a greater force to the first rocker arm 1222 than the side magnet 1232, thereby driving the first rocker arm 1222 to rotate, and simultaneously driving the second rocker arm 1223 to rotate, thus causing the mirror mount 1211 to move from one end of the predetermined track to the other end. The activation of the limit switch 1231 can be done manually or intelligently via command, and can be set according to specific circumstances in actual production. In the standby or working position, the plane of the mirror mount 1211 is parallel to the combined laser beam, and the predetermined track A is also located in the plane of the mirror mount 1211, without intersecting with the combined laser beam, so that the mirror mount 1211 will not block the beam whether it is moving or stationary.

[0039] The dual-output switchable laser system of this invention combines the two output modes of existing lasers. By rapidly switching the optical path, it can simultaneously combine a high-power optical guide arm and highly flexible fiber optic technology to achieve complementary advantages, thereby enabling the use of one device to replace multiple dedicated laser devices, greatly reducing user costs and footprint.

[0040] The embodiments described above only illustrate the preferred implementation of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A dual-output switchable laser device for changing the direction of laser propagation optical path, characterized in that: The system includes a reflecting unit, a rotating unit, and a fixing unit. The reflecting unit is fixed to the rotating unit, which drives the reflecting unit to switch between a standby position and a working position. The fixing unit fixes the reflecting unit in either the standby or working position. The rotating unit includes a servo motor and a first rocker arm. The servo motor is connected to the first rocker arm and controls the first rocker arm to rotate along a predetermined arc path. The first rocker arm drives the reflecting unit to switch between a standby position and a working position. The end of the predetermined arc path closer to the optical path is the working position, and the end farther from the optical path is the standby position. When the reflecting unit is in the working position, the direction of the laser propagation optical path is changed; when the reflecting unit is in the standby position, the direction of the laser propagation optical path remains unchanged.

2. The dual-output switchable laser device according to claim 1, characterized in that: It also includes a second rocker arm. The head end of the first rocker arm is connected to a servo motor, and the tail end of the first rocker arm is connected to the head end of the second rocker arm. The tail end of the second rocker arm is fixedly connected to the reflecting unit. Thus, the servo motor controls the first rocker arm to rotate along a predetermined arc path, which drives the second rocker arm to move and in turn drives the reflecting unit to switch between a standby position and a working position on a predetermined straight track. The end of the predetermined track closer to the laser is the working position, and the end of the predetermined track farther from the laser is the standby position.

3. The dual-output switchable laser device according to any one of claims 1 or 2, characterized in that: The fixed unit includes two limit switches, which are respectively set in the standby position and the working position. When the reflector is in the standby position or the working position, the limit switches are triggered to stop the power supply to the servo motor, thereby stopping the power supply to the first rocker arm.

4. The dual-output switchable laser device according to claim 2, characterized in that: The fixing unit also includes two side magnets, which are respectively located in the standby position and the working position, close to one end of the reflective unit along the outer edge of the predetermined arc path. When the reflective unit is in the standby position or the working position, the side magnets attract the nearest end of the reflective unit to keep the reflective unit in a stable position.

5. The dual-output switchable laser device according to claim 2, characterized in that: The fixing unit also includes a central magnet, which is located at the center of the predetermined arc path. When the reflecting unit is in the standby or working position, the central magnet attracts one end of the mirror mount along the inner side of the predetermined arc path to keep the reflecting unit in a stable position.

6. The dual-output switchable laser device according to any one of claims 4 or 5, characterized in that: The reflecting unit includes a mirror base and a reflector. The reflector is fixed on the mirror base, and the two ends of the mirror base along the line where the plane of the mirror base intersects the plane of the reflector are made of magnetically adsorbable material.

7. A dual-output switchable laser system, characterized in that: It includes a total reflection mirror, a laser working medium, a xenon lamp, an output mirror, a coupling lens, an optical fiber, a dual-output switchable laser device as described in any one of claims 1-6, and a light guide arm; the total reflection mirror, the laser working medium, the xenon lamp, and the output mirror form an initial laser source that continuously emits an initial laser beam; When the dual-output switchable laser device is in standby position, the initial laser beam is focused and coupled into the optical fiber after passing through the coupling lens to form the first output beam. When the dual-output switchable laser device is in the working position, the initial laser beam is reflected by the dual-output switchable laser device and enters the light guide arm. After multiple reflections within the light guide arm, it is output from the light guide arm outlet to form the second output beam. The dual-output switchable laser device rotates along a predetermined arc path, with the end of the predetermined arc path closer to the optical path being the working position and the end farther from the optical path being the standby position.

8. The dual-output switchable laser system according to claim 7, characterized in that: It also includes a 45° total reflection mirror, which is set between the dual-output switchable laser device and the light guide arm to change the direction of the initial laser beam incident on the 45° total reflection mirror so that the output direction of the second output beam is the same as that of the first output beam.

9. The dual-output switchable laser system according to any one of claims 7 or 8, characterized in that: When the position of the reflector needs to be changed, the limit switch at the standby or working position of the reflector is activated. At this time, the servo motor is powered again, providing the first rocker arm with a power greater than that of the side magnet and the center magnet, thereby driving the first rocker arm to rotate, and thus causing the reflector to move from one end of the predetermined track to the other end.

10. The dual-output switchable laser system according to claim 9, characterized in that: In the standby or working position, the plane of the mirror mount is parallel to the combined laser beam, and the predetermined track is located in the plane of the mirror mount without intersecting with the combined laser beam, so that the mirror mount will not block the propagation of the combined laser beam when it is moving or stationary.

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