Optical fiber coupling device, optical fiber docking mechanism and ablation system for laser treatment

Abstract

The invention discloses an optical fiber coupling device, an optical fiber docking mechanism and a laser ablation system, and the device comprises a first unit which is provided with a first connection part which is used for connecting an input optical fiber. And the second unit is rotatably connected with the first unit, a second connecting part is arranged in the second unit, the second connecting part is used for connecting an output optical fiber, and an optical path is arranged between the first connecting part and the second connecting part. In the invention, after the input optical fiber is fixed to the first connecting part and the output optical fiber is fixed to the second connecting part, an operator can operate the second unit to rotate relative to the first unit so as to control the output optical fiber to rotate relative to the input optical fiber, so that the angle of the laser emitting part at the far end of the output optical fiber can be adjusted; therefore, the technical effect of precise treatment of the focus is achieved, and the problem that precise treatment cannot be achieved due to the fact that the input optical fiber is difficult to control directional emission of the input optical fiber at the selected angle in the related technology can be solved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to an optical fiber coupling device, an optical fiber docking mechanism, and a laser ablation system for laser therapy. Background Technology

[0002] Using light to treat target areas is an excellent approach, such as photodynamic therapy and laser interstitial thermotherapy. Taking laser ablation as an example, the treatment process requires inserting an output optical fiber into the lesion. The laser emitted from the laser-emitting section of the output fiber, which can direct the light output, ablates the lesion. How to ensure that the output optical fiber directs the treatment light at a selected angle remains a problem to be solved in related technologies. Summary of the Invention

[0003] The main objective of this invention is to provide an optical fiber coupling device, an optical fiber docking mechanism, and a laser ablation system for laser therapy, in order to solve the problem in related technologies that it is difficult to control the output optical fiber to emit in a selected direction at a selected angle, resulting in the inability to achieve precise treatment.

[0004] To achieve the above objectives, the present invention provides an optical fiber coupling device for laser therapy, comprising: a first unit having a first connecting portion for detachably connecting to an input optical fiber;

[0005] The second unit is rotatably connected to the first unit. The second unit is provided with a second connecting part, which is used to detachably connect to the output optical fiber. There is an optical path between the first connecting part and the second connecting part.

[0006] At least a portion of the second unit is used for a drive connection with the detection end of the angle detection component, so that the angle detection component can detect the rotation angle of the second unit.

[0007] Optionally, the first connection includes a first channel located within the first unit, the first channel being detachably connected to the input optical fiber.

[0008] Optionally, the second connection includes a second channel located within the second unit, the second channel being used for detachable connection to the output optical fiber.

[0009] Optionally, it also includes a rotating member disposed between the first unit and the second unit.

[0010] Optionally, the rotating member includes a rolling element that can rotate relative to the first unit and the second unit; or, the rotating member includes a first component and a second component that can rotate relative to each other, the first component being connected to the first unit and the second component being connected to the second unit.

[0011] Optionally, the proximal end of the first unit extends into the proximal end of the second unit, and the proximal end of the first unit is provided with a third connecting part, which is used to connect with the fixed end of the optical fiber docking body.

[0012] Optionally, the third connection part includes a first snap-fit ​​part located near the first unit, the first snap-fit ​​part being used to snap-fit ​​with the fixed end of the optical fiber docking body.

[0013] Optionally, the first snap-fit ​​portion includes a snap-fit ​​protrusion disposed on the outer peripheral surface of the first unit.

[0014] Optionally, the second unit is provided with a fourth connecting part and a fifth connecting part, which are distributed along the axial direction of the second unit. The fourth connecting part is used for transmission connection with the drive end of the optical fiber docking body, and the fifth connecting part is used for connection with the angle detection component of the optical fiber docking body.

[0015] Optionally, the second unit includes a connecting body and a connector. The proximal end of the body is inserted into and rotatably connected to the first unit, and the distal end of the body is inserted into and fixed to the connector. The second connecting part is located on the connector, and the optical path is located inside the body.

[0016] Optionally, the second unit may be provided with at least a first lens and a second lens, which are located at both ends of the second unit and distributed along the axial direction.

[0017] According to another aspect of the present invention, a fiber optic docking mechanism for laser therapy is provided, comprising: a fiber optic docking body including a driving end and a fixed end; and a fiber optic coupling device including: a first unit fixed to the fixed end, the first unit having a first connecting portion for detachably connecting to an input fiber optic cable; and a second unit rotatably connected to the first unit and drivenly connected to the driving end, the second unit having a second connecting portion for detachably connecting to an output fiber optic cable, and an optical path between the first connecting portion and the second connecting portion.

[0018] Optionally, the fixed end includes a base with an installation channel inside, and at least a portion of the first unit and the second unit are located in the installation channel; the driving end includes a driving wheel, which is sleeved and fixed on the second unit; the fiber optic docking mechanism also includes an angle detection component, the angle detection end of which is fixed on the second unit for detecting the rotation angle of the second unit.

[0019] Optionally, the fiber optic docking body also includes: a base for fixed connection with the medical device body; a motion platform movably mounted on the base, with the base fixed to the motion platform; the fiber optic docking body can control the output fiber to achieve forward and backward movement and / or rotational movement along the long axis of the output fiber.

[0020] Optionally, it also includes: a second component, the first end of which is connected to the optical fiber docking body, and the second end which is used to support and position the output optical fiber.

[0021] Optionally, it further includes: a first component having a first guiding channel through which the output optical fiber passes, the first component being detachably connected to the optical fiber docking body, and the first component having a first state and a second state;

[0022] In the first state, the first component is connected to the optical fiber docking body and is located between the optical fiber docking body and the second component, and the first guide channel is docked to the second connection part;

[0023] In the second state, the first component separates from the optical fiber docking body, exposing the optical fiber operating part near the output optical fiber.

[0024] According to another aspect of the present invention, a laser ablation system is provided, comprising the above-described fiber coupling device or the above-described fiber docking mechanism; and a laser generator for generating laser light; an input fiber connected to the laser generator at its near end and connected to the first unit at its far end; and an output fiber connected to the second unit at its near end and provided with a laser emission section at its far end.

[0025] In this embodiment of the invention, a first unit and a second unit are provided. The first unit has a first connecting portion for connecting an input optical fiber. The second unit is rotatably connected to the first unit, allowing it to rotate relative to the first unit. The second unit has a second connecting portion for connecting an output optical fiber. An optical path exists between the first and second connecting portions. At least a portion of the second unit is connected to the detection end of an angle detection component, allowing the angle detection component to detect the rotation angle of the second unit. The first and second units are pre-assembled into a coupling device. The second unit, as a rotatable part of the coupling device, completes the coupling of the input and output optical fibers by fixing the input optical fiber to the first connecting portion and the output optical fiber to the second connecting portion. The laser emitted from the input optical fiber passes through the optical path and exits through the output optical fiber. Since the second unit is a rotatable part of the coupling device, after the input and output optical fibers are coupled, the second unit can be rotated relative to the first unit. This allows control of the output optical fiber's rotation relative to the input optical fiber, thereby adjusting the angle of the laser emission section at the distal end of the output optical fiber. This enables precise treatment of the lesion. Furthermore, an angle detection component can be configured on the second unit to detect its rotation angle and obtain the rotation angle of the output light beam. This allows for precise control of the output light beam's rotation angle, thus solving the problem in related technologies where it is difficult to control the input optical fiber to emit at a selected angle, leading to inaccurate treatment. After laser treatment, the input optical fiber can be disconnected from the first connection part, and the output optical fiber can be disconnected from the second connection part. The coupling device consisting of the first and second units remains on the optical fiber docking mechanism. Attached Figure Description

[0026] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention, making other features, objects, and advantages of the invention more apparent. The illustrative embodiments of the invention illustrated in the drawings and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0027] Figure 1 This is a schematic diagram of the structure of the optical fiber coupling device according to an embodiment of the present invention;

[0028] Figure 2 This is a cross-sectional view of the fiber optic coupling device according to an embodiment of the present invention;

[0029] Figure 3 This is a cross-sectional view of the optical fiber coupling device after it has been installed onto the optical fiber docking body according to an embodiment of the present invention.

[0030] Figure 4 This is a schematic diagram of the internal structure of the optical fiber docking mechanism according to an embodiment of the present invention;

[0031] Figure 5 This is a side view of the optical fiber docking mechanism according to an embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of the structure during the output optical fiber docking process according to an embodiment of the present invention;

[0033] Figure 7 This is a structural schematic diagram of the first component according to the present invention;

[0034] Figure 8 This is a schematic diagram of the structure after the output optical fiber is connected according to an embodiment of the present invention;

[0035] Figure 9 This is a schematic cross-sectional view of the output optical fiber after connection according to an embodiment of the present invention;

[0036] Figure 10 This is a cross-sectional view of the structure after the output optical fiber is connected according to an embodiment of the present invention.

[0037] Among them, 1. First unit; 10. First connecting part; 100. First channel; 2. Second unit; 20. Second connecting part; 200. Second channel; 21. Fourth connecting part; 22. Fifth connecting part; 23. Main body; 24. Connector; 3. Rotating component; 4. Third connecting part; 40. First snap-fit ​​part; 5. Optical path; 50. First lens; 51. Second lens; 6. Fiber optic docking body; 60. Driving end; 600. Driving wheel; 61. Fixed end; 610. Base; 611. Installation channel; 63. Component docking part; 7. Angle detection component; 8. First component; 80. First guide channel; 800. First equal diameter section; 801. Second narrowed section; 802. Second equal diameter section; 803. First narrowed section; 81. First part; 82. Second part; 83. Connector; 9. Second component; 90. Connecting arm; 91. Fastening assembly; 910. First fastening element; 911. Second fastening element; 9110. Pressing cam; 92. Second guide channel; 11. Output optical fiber; 110. Optical fiber operating part; 1100. First operating part; 1101. Second operating part; 12. Base; 13. Motion platform. Detailed Implementation

[0038] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0039] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the invention described herein.

[0040] In this invention, the terms "upper," "lower," "inner," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0041] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0042] Furthermore, the terms "set up," "equipped with," "connected," and "fixed" should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] In addition, the term "multiple" should mean two or more.

[0044] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0045] like Figure 1 and Figure 2As shown, this embodiment provides an optical fiber coupling device for laser therapy, including a first unit 1 and a second unit 2. The first unit 1 is located at the proximal end of the second unit 2. The first unit 1 serves as a fixed part and can be fixed to the fixed end of the optical fiber docking body. A first connecting part 10 is provided on the first unit 1, and the distal end of the input optical fiber can be docked to and fixed to the first connecting part 10. The second unit 2 is rotatably connected to the first unit 1. Specifically, a portion of the second unit 2 can be axially engaged with a portion of the first unit 1, and after engagement, the second unit 2 can rotate relative to the first unit 1. The first unit 1 and the second unit 2 are pre-assembled into a coupling device, with the second unit 2 serving as the rotatable part of the coupling device. It should be noted that in this embodiment, the distal end refers to the end away from the operator, and the proximal end refers to the end closer to the operator.

[0046] A second connecting part 20 is provided on the second unit 2, and the near end of the output optical fiber can be connected to and fixed to the second connecting part 20. To ensure that the laser emitted from the input optical fiber can be transmitted to the output optical fiber, such as... Figure 2 As shown, an optical path 5 is provided between the first connecting part 10 and the second connecting part 20. The laser emitted from the input optical fiber is transmitted to the output optical fiber after passing through the optical path 5. After the input optical fiber is connected to the first unit 1 and the output optical fiber is connected to the second unit 2, since the second unit is a rotatable part in the coupling device, after the coupling of the input and output optical fibers is completed, the second unit 2 can be driven to rotate relative to the first unit 1, thereby driving the output optical fiber to rotate relative to the input optical fiber. This allows adjustment of the angle of the laser emission part at the distal end of the output optical fiber, achieving precise treatment of the lesion. The rotation of the second unit 2 can be done manually by the operator or automatically by configuring a driving component. For example, a drive wheel or similar structure can be configured on the second unit 2, and a drive motor can drive the drive wheel to rotate, thereby driving the second unit 2 to rotate. After laser treatment is completed, the input optical fiber can be removed from the first connecting part 10 and the output optical fiber can be removed from the second connecting part 20. The coupling device composed of the first unit 1 and the second unit 2 can remain on the optical fiber docking mechanism.

[0047] In one embodiment, such as Figure 3 As shown, the fiber optic coupling device can be installed on a fiber optic docking body 6 to form a fiber optic docking mechanism for use. After installation, the first unit 1 in the fiber optic coupling device is fixed, and the second unit 2 is rotatable. The fiber optic docking body 6 can be fixed on medical equipment, such as in the hole of an MR magnetic resonance device. A drive device for driving the second unit 2 to rotate can be configured on the fiber optic docking body 6.

[0048] In one embodiment of the first connecting portion 10, such as Figure 2As shown, the first connecting portion 10 includes a first channel 100, which is located within the first unit 1 and is used for insertion and mating with an input optical fiber. Specifically, in this embodiment, the first channel 100 can be a continuously closed channel in both the circumferential and axial directions, and its internal contour is consistent with the external contour of the portion on the input optical fiber used for insertion and mating. The first channel 100 can be inserted and mated with the input optical fiber. Specifically, the input optical fiber can be inserted into the first channel 100 with a gap fit and then fixed to the first channel 100 by a fastener such as a threaded sleeve. In one embodiment, the first channel 100 is a circular channel, and the distal end of the input optical fiber is cylindrical.

[0049] like Figure 2 As shown, in order to facilitate the outward emission of laser from the far end of the input optical fiber, an emission channel can also be set in the first unit 1. The emission channel is connected to and coaxial with the far end of the first channel 100. The emission channel includes a diffusion section. The diameter of the diffusion section gradually increases along the laser emission direction and the whole is in the shape of a cone. By setting the diffusion section, it is beneficial for the laser emitted from the far end of the input optical fiber to be emitted into the optical path 5.

[0050] In one embodiment of the second connecting portion 20, the second connecting portion 20 includes a second channel 200 located within the second unit 2. The second channel 200 is used for insertion and mating with the output optical fiber. Specifically, in this embodiment, the second connecting portion 20 can also be a continuously closed channel in both the axial and circumferential directions, with its internal contour consistent with the external contour of the mating area on the output optical fiber used for insertion and mating. The second channel 200 can be inserted and mated with the output optical fiber. Specifically, the output optical fiber can be inserted into the second channel 200 with a gap fit and then fixed to the second channel 200 by a threaded sleeve or other fixing component. In one embodiment, the second channel 200 is a circular channel, and the proximal end of the output optical fiber is cylindrical.

[0051] To ensure the precise and stable rotation of the second unit 2 relative to the first unit 1, such as... Figure 2 As shown, a rotating member 3 can be provided between the first unit 1 and the second unit 2 to support the second unit 2 and provide it with rotational freedom. Specifically, the rotating member 3 may include an inner and outer sleeved first component and a second component, which can rotate relative to each other. In an embodiment where the first unit 1 is inserted into the second unit 2, the first component is sleeved outside the first unit 1 and fixedly connected to it, while the second component is sleeved inside the second unit 2.

[0052] The rotating component 3 may include a first component and a second component that are fitted together, with the first component fitted outside the first unit 1 and the second component fitted inside the second unit 2. The first component and the second component can rotate relative to each other.

[0053] In one embodiment, the first unit 1 is plugged into the second unit 2, with the first component connected to the first unit 1 and the second component connected to the second unit 2. The rotating component 3 may include an inner bearing ring, an outer bearing ring, and balls disposed between the inner and outer bearing rings, wherein the first component may be the inner bearing ring and the balls, and the second component may be the outer bearing ring. To facilitate bearing installation, a stepped surface may be provided at the distal end of the first unit 1, and a stop may be provided within the second unit 2. The bearing may be fitted onto the stepped surface and located between the end face of the stepped surface and the stop of the second unit 2. The axial position of the bearing can be positioned using the end face of the stepped surface and the stop of the second unit 2. Furthermore, a bearing cover may be fitted onto the first unit 1, with the inner end face of the bearing cover covering the end face of the bearing. The bearing cover may also be fixedly connected to the second unit 2, thereby preventing the bearing from being exposed to the external environment.

[0054] In another embodiment, the rotating component 3 includes only an inner bearing ring and an outer bearing ring, wherein the first component is the inner bearing ring and the second component is the outer bearing ring. The inner and outer bearing rings are joined together and have smooth contact surfaces, allowing the outer bearing ring to rotate smoothly relative to the inner bearing ring.

[0055] In some other embodiments, the rotating member 3 may include a first component and a second component that are inner and outer sleeves. The first component is connected to the first unit 1, and the second component is connected to the second unit 2. That is, the first component can be considered as part of the first unit, and the second component as part of the second unit. For example, the rotating member 3 may only include an inner bearing ring and an outer bearing ring, wherein the first component is the inner bearing ring, the second component is the outer bearing ring, and the inner and outer bearing rings are inner and outer sleeves with smooth contact surfaces, allowing the outer bearing ring to rotate smoothly relative to the inner bearing ring. Another example... Figure 2 As shown, the rotating component 3 may also include rolling elements, such as balls, which allow relative rotation between the first unit 1 and the second unit 2. Based on the rolling elements, a cage can be provided between the first unit 1 and the second unit 2, with the rolling elements mounted on the cage to maintain their position. This arrangement results in a more compact overall structure while maintaining the rotational performance of the second unit 2.

[0056] When the fiber optic coupling device needs to be assembled onto the fiber optic docking body 6 for use, in order to facilitate the connection and fixation of the first unit 1 in the fiber optic coupling device and the fiber optic docking body 6, such as Figure 1 As shown, the proximal end of the first unit 1 extends into the proximal end of the second unit 2, and the proximal end of the first unit 1 is provided with a third connecting portion 4, as shown. Figure 1 and Figure 3As shown, the third connecting part 4 is used to connect to the fixed end 61 of the optical fiber docking body 6. The third connecting part 4 can connect to a specific part on the optical fiber docking body 6, and the connection method can be snap-fit, etc. The specific structure of the third connecting part 4 can be designed according to its connection method with the optical fiber docking body 6, and is not limited here.

[0057] In one implementation, such as Figure 1 As shown, the third connecting part 4 includes a first snap-fit ​​part 40 located near the end of the first unit 1. The first snap-fit ​​part 40 is used to snap into the fixed end 61 of the optical fiber docking body 6. Specifically, the optical fiber docking body 6 needs to be provided with a second snap-fit ​​part that snaps into the first snap-fit ​​part 40. When the first snap-fit ​​part 40 is set as a snap-fit ​​protrusion, the second snap-fit ​​part can be set as a slot. Similarly, when the first snap-fit ​​part 40 is set as a slot, the second snap-fit ​​part can be set as a snap-fit ​​protrusion. The first snap-fit ​​part 40 can be a snap-fit ​​protrusion provided on the outer peripheral surface of the first unit 1, and the first unit 1 can adopt an axial or radial insertion connection with the fixed end 61 of the optical fiber docking body 6.

[0058] To improve the stability of the connection, the first snap-fit ​​part 40 can be configured as multiple parts and distributed along the circumference of the first unit 1. Correspondingly, multiple second snap-fit ​​parts with snap-fit ​​relationships with the first snap-fit ​​part 40 can be provided in the fixed end 61 of the optical fiber docking body 6.

[0059] In one implementation, such as Figure 3 As shown, after the fiber optic coupling device is installed onto the fiber optic docking body 6, the second unit 2 in the fiber optic coupling device is connected by a drive end 60 in the fiber optic docking body 6. The drive end 60 can at least drive the second unit 2 to rotate, and the drive end 60 may include a drive wheel 600. To facilitate the connection between the second unit 2 and the drive end 60, as shown... Figure 1 As shown, the second unit 2 is provided with a fourth connecting part 21, which can be sleeved and fixed inside the drive wheel 600. The power output by the drive wheel 600 is transmitted to the second unit 2 through the fourth connecting part 21. The fourth connecting part 21 can be a part of the outer peripheral surface of the second unit 2, in which case the power transmission is realized by connecting the fourth connecting part 21 with the drive wheel 600.

[0060] In one embodiment, at least a portion of the cross-section of the second unit 2 is set as "D" shaped, which serves as the fourth connecting part 21. The drive wheel 600 is provided with a "D" shaped mounting hole. After the drive wheel 600 and the fourth connecting part 21 are assembled, they cooperate with each other to achieve power transmission.

[0061] To facilitate the monitoring and control of the rotation angle of the second unit 2, such as Figure 3 As shown, an angle detection component 7, such as an encoder, can be configured on the fiber optic docking body 6. Figure 1As shown, the second unit 2 is provided with a fifth connecting part 22, which is used to connect with the angle detection component 7. During the rotation of the second unit 2, the fifth connecting part 22 drives the angle detection end in the angle detection component 7 to rotate synchronously, and the rotation angle of the second unit 2 is determined according to the rotation angle of the angle detection end. Taking the angle detection component 7 as an encoder as an example, the encoder includes a rotatable rotor, which can be sleeved and fixed on the fifth connecting part 22 so that the rotor can rotate synchronously with the second unit 2. Based on this, the fifth connecting part 22 can be a part of the outer peripheral surface of the second unit 2, which cooperates with the rotor in the encoder to achieve synchronous rotation.

[0062] In one embodiment, at least a portion of the cross-section of the second unit 2 is set to "D" shape, which serves as the fifth connecting part 22. The rotor of the angle detection component 7 is provided with a "D" shaped mounting hole. After the rotor of the angle detection component 7 is assembled with the fifth connecting part 22, the two cooperate with each other to achieve power transmission.

[0063] Of course, the fifth connecting part 22 can also be a transmission protrusion provided on the outer peripheral surface of the second unit 2. The transmission protrusion and the rotor of the encoder restrict each other in the circumferential direction to realize power transmission.

[0064] In addition, such as Figure 3 As shown, the fixed end 61 of the optical fiber docking body 6 may also include a base 610, and an installation channel 611 for installing an optical fiber coupling device may be provided in the base 610.

[0065] To facilitate simultaneous connection of the drive wheel 600 and the angle detection component 7, the fourth connecting part 21 and the fifth connecting part 22 can be distributed along the axial direction of the second unit 2, and their front and rear positions along the axial direction of the second unit 2 are not limited.

[0066] In one embodiment, such as Figure 2 As shown, the second unit 2 includes a connecting body 23 and a connector 24. The near end and far end of the connecting body 23 are respectively inserted into the first unit 1 and the connector 24. The optical path 5 is disposed within the connecting body 23. The connecting body 23 is rotatably connected to the first unit 1 and fixedly connected to the connector 24. A second connecting part 20 is disposed on the connector 24. For example, the second connecting part 20 is a second channel 200 disposed within the connector 24. In one embodiment, in addition to the second channel 200, the second connecting part 20 is also provided with a slot located on the outer periphery of the second channel 200. The near end of the output optical fiber includes an optical fiber head and an annular connector located on the outer periphery of the optical fiber head. The optical fiber head is inserted into the second channel 200, and the annular connector is inserted into the slot. In addition, in this embodiment, the fourth connecting part 21 can be the outer peripheral surface of the connector 24, and the fifth connecting part 22 can be the outer peripheral surface of the body 23.

[0067] like Figure 2 As shown, to ensure accurate transmission of the laser emitted from the far end of the output optical fiber to the output optical fiber, a first lens 50 and a second lens 51 are provided within the second unit 2. The first lens 50 and the second lens 51 are located at opposite ends of the second unit 2 and distributed along the axial direction. Specifically, in this embodiment, the first lens 50 is located at the near end of the second unit 2, i.e., closer to the input optical fiber, and the second lens 51 is located at the far end of the second unit 2, i.e., closer to the output optical fiber. With this arrangement, the first lens 50 can collimate the laser emitted from the input optical fiber, and the collimated laser is then directed towards the second lens 51, which converges the laser before it is emitted into the output optical fiber. In this embodiment, the end face of the far end of the output optical fiber, the first lens 50, the second lens 51, and the end face of the near end of the input optical fiber can be arranged coaxially.

[0068] According to another aspect of the invention, such as Figure 4 and Figure 5 As shown, a fiber optic docking mechanism is provided, including: a fiber optic docking body 6, which can be fixed to a medical device body, such as in the aperture of an MR magnetic resonance imaging (MRI) device. The fiber optic docking body 6 may include a driving end 60 and a fixing end 61, wherein... Figures 1 to 4 As shown, the first unit 1 of the fiber optic coupling device is fixedly connected to the fixed end 61, and the second unit 2 is drivenly connected to the driving end 60. At least a portion of the driving end 60 can rotate relative to the fixed end 61, thereby driving the second unit 2 to rotate relative to the first unit 1. The first unit 1 is provided with a first connecting part 10, to which the input optical fiber can be connected. The second unit 2 is provided with a second connecting part 20, to which the output optical fiber can be connected. An optical path 5 is provided between the first connecting part 10 and the second connecting part 20. Laser emitted from the far end of the input optical fiber can be transmitted through the optical path 5 to the near end of the output optical fiber, and then emitted from the laser emitting part at the far end of the output optical fiber. Under the action of the driving end 60, the second unit 2 and the output optical fiber can rotate synchronously to change the emission angle of the output optical fiber.

[0069] The drive end 60 may include a drive wheel 600, which is sleeved and fixed to the second unit 2. The second unit 2 is driven to rotate by the rotation of the drive wheel 600. The drive wheel 600 may be a gear or a pulley. Based on the structure of the drive wheel 600, a corresponding power output component may be configured, such as a power output component consisting of a drive motor and a gear, or a power output component consisting of a drive motor, a pulley, and a transmission belt.

[0070] The fixed end 61 may include a base 610, and the base 610 may be provided with a mounting channel 611 for mounting the fiber optic coupling device. In an embodiment where the drive wheel 600 is configured with a power output component consisting of a drive motor, pulleys, and a transmission belt, the drive motor and pulleys may be mounted on one side of the base 610, and the pulleys are connected to the drive wheel 600 via a transmission belt.

[0071] In one implementation, such as Figure 4 As shown, the fiber optic docking body 5 also includes: a base 12 for fixed connection with the medical device body; a motion platform 13, movably mounted on the base 12, meaning the motion platform 13 can be driven to move linearly relative to the base 12; and a base 610 fixed to the motion platform 13, allowing the base 610 to move synchronously with the motion platform 13, thereby driving the fiber optic coupling device, input fiber, and output fiber to move synchronously. The direction of movement of the motion platform 13 can be parallel to the axis of the fiber optic coupling device, that is, parallel to the axis of the first unit 1 and the second unit 2.

[0072] In actual use, the motion platform 13 can be controlled to move linearly in a preset direction according to surgical needs. During this process, the drive wheel can be controlled to rotate the second unit 2 and the output optical fiber, so that the output optical fiber performs a composite motion of linear movement and rotation. Of course, it is also possible to only control the motion platform 13 to move in the preset direction, so that the output optical fiber only performs linear movement. Alternatively, it is also possible to only control the drive wheel 600 to rotate the second unit 2 and the output optical fiber.

[0073] According to another aspect of the present invention, a laser ablation system is provided, comprising the above-described fiber coupling device or the above-described fiber docking mechanism; and a laser generator for generating laser light; an input fiber connected to the laser generator at its near end and connected to the first unit 1 at its far end; and an output fiber connected to the second unit 2 at its near end and provided with a laser emission section at its far end.

[0074] Based on the above embodiments, such as Figure 5 and Figure 6As shown, to facilitate guiding the output optical fiber 11 to the second unit 2 of the optical fiber coupling device, this embodiment provides an optical fiber guiding mechanism for guiding the output optical fiber 11 to the second unit 2. The proximal end of the output optical fiber 11 may include an external structure and an optical fiber disposed within the external structure. The external structure may be a rigid structure similar to a shell. The proximal end of the optical fiber may be fixed within the external structure or may rotate relative to the external structure. The distal end of the output optical fiber 11 includes a laser emitting section. Additionally, the proximal end of the output optical fiber 11 also includes an optical fiber operating section 110. The optical fiber operating section 110 may be part of the external structure. As an example, the optical fiber operating section 110 may be a threaded sleeve, configured to be threadedly connected to the output optical fiber 11 after it is connected to the second unit 2, thereby securing the output optical fiber 11 to the second unit 2 and preventing the output optical fiber 11 from detaching axially. The optical fiber operating section 110 may also be a screw plug controlling the cooling circuit within the output optical fiber 11, allowing control of the on / off state of the cooling circuit. Of course, the above description of the fiber optic operation unit 110 is not restrictive. In this embodiment, the fiber optic operation unit 110 refers to the part of the output fiber optic 11 that can be operated near the end.

[0075] The fiber optic guiding mechanism in this embodiment includes a first component 8, such as... Figure 7 and Figure 9 As shown, the first component 8 is provided with a first guiding channel 80. The first guiding channel 80 can be a continuously closed circumferential channel structure located inside the first component 8, or it can be a fully open or partially open groove structure located on the first component 8. The proximal end of the output optical fiber 11 can pass into the first guiding channel 80. When the first guiding channel 80 is a continuously closed circumferential channel structure, the proximal end of the output optical fiber 11 needs to be inserted into the first guiding channel 80 axially from the distal end of the first guiding channel 80. When the first guiding channel 80 is a fully open or partially open groove structure, the proximal end of the output optical fiber 11 can be first inserted radially along the open portion of the first guiding channel 80, and then inserted axially along the first guiding channel 80.

[0076] The proximal end of the first component 8 is used for detachable connection with the optical fiber docking body 6. Specifically, the proximal end of the first component 8 can be axially inserted into the optical fiber docking body 6, achieving a detachable connection through axial insertion and removal. In other words, as... Figure 7 As shown, a connector 83 can be provided at the proximal end of the first component 8. The connector 83 is used for axial insertion and mating with the optical fiber docking body 6. Figure 9 As shown, after connection, the first guiding channel 80 is connected to the second connecting part 20, specifically, it can communicate with the second channel 200 in the second unit 2, so that the output optical fiber passing through the first guiding channel 80 can be connected to the second channel 200. In one embodiment, the connector 83 can be a connecting ring protruding from the proximal end face of the first component 8, such as... Figure 9 As shown, a connecting groove for inserting and engaging with the connecting ring can be provided on the fiber optic docking body 6. To facilitate the connection between the first component 8 and the fiber optic docking body 6, a constricted guide section can be provided at the far end of the connecting groove. The fixation of the first component 8 after it is connected to the fiber optic docking body 6 can be achieved by additionally configured fasteners or by an interference fit between the first component 8 and the fiber optic docking body 6; this embodiment does not impose any limitations on this.

[0077] In this embodiment, the first component 8 has a first state and a second state, specifically, as follows: Figure 5 , Figure 6 and Figure 9 As shown, when the first component 8 is connected to the optical fiber docking body 6, the first component 8 is in a first state. At this time, the first guide channel 80 of the first component 8 is connected to the second channel 200 on the optical fiber docking body 6. The proximal end of the output optical fiber 11 can pass through the first guide channel 80. The operator can operate the output optical fiber 11 to move axially toward the second channel 200 on the optical fiber docking body 6 under the guidance of the first guide channel 80 until the output optical fiber 11 is inserted into the second channel 200. In this embodiment, the first guide channel 80 in the first component 8 can guide the movement of the output optical fiber 11, so that the output optical fiber 11 can be accurately docked with the second channel 200, reducing the difficulty of docking the output optical fiber 11.

[0078] After the output optical fiber 11 is connected, the operator can operate the first component 8 to separate it from the optical fiber connection body 6, for example, by pulling out the first component 8 along the axis, and then operate the first component 8 to put it in the second state. In the second state, the optical fiber operation part 110 at the near end of the output optical fiber 11 is exposed. At this time, the operator can perform the next operation on the output optical fiber 11 through the optical fiber operation part 110, such as locking the output optical fiber 11.

[0079] As an example, the fiber optic operating part 110 near the output fiber optic cable 11 includes a threaded sleeve, and the fiber optic docking body 6 is provided with a threaded connection part that can be threadedly connected to the threaded sleeve. During the docking process, the threaded sleeve needs to be inserted into the first guide channel 80. When the output fiber optic cable 11 moves axially along the first guide channel 80 to dock with the fiber optic channel on the fiber optic docking body 6, the threaded sleeve moves synchronously within the first guide channel 80 to a position where it can engage with the threaded connection part. At this time, after operating the first component 8 to the second state, the threaded sleeve is exposed, and the operator can rotate the threaded sleeve. Under the action of the threaded connection part, the threaded sleeve is screwed in by a threaded connection, synchronously driving the output fiber optic cable 11 to move further towards the fiber optic docking body 6, ensuring that the depth of insertion of the output fiber optic cable 11 into the fiber optic docking channel 62 reaches the preset value, thereby improving the connection stability.

[0080] As can be seen from the above embodiments, in the first state, the first component 8 is sleeved outside the output optical fiber 11 and connected to the optical fiber docking body 6. In the second state, the first component 8 is separated from the optical fiber docking body 6, and the optical fiber operating part 110 near the output optical fiber 11 is exposed. Due to the sleeved relationship between the first component 8 and the output optical fiber 11, the first component 8 needs to be pulled out axially first during the switching process from the first state to the second state, and then the first component 8 is operated to enter the second state to expose the optical fiber operating part 110 near the output optical fiber 11. Different operating methods can be adopted according to the structure of the first component 8. In one embodiment, the first component 8 is configured to be able to move axially away from the optical fiber docking body 6 along the near end of the output optical fiber 11 to a position where the optical fiber operating part 110 is exposed. In this embodiment, there are higher requirements for the matching degree of the inner contour of the first guide channel 80 in the first component 8, the outer contour of the near end of the output optical fiber 11, and the position of the optical fiber operating part 110.

[0081] In another embodiment, the first component 8 includes two openable and closable parts. When the first component 8 moves to detach from the fiber optic docking body 6, it can be opened to expose the fiber optic operating part 110. Specifically, in this embodiment, as... Figure 6 and Figure 6 As shown, the first component 8 includes a first part 81 and a second part 82, which are disposed opposite to each other. In a first state, the first part 81 and the second part 82 are engaged, and a first guide channel 80 is located between the first part 81 and the second part 82. In a second state, the first part 81 and the second part 82 are at least partially separated.

[0082] In this embodiment, the first part 81 and the second part 82 are two openable and closable sections of the first component 8. Their opening and closing methods can include rotation, radial linear movement, etc. When rotation is used, the first part 81 and the second part 82 can rotate until their inner surfaces are close together or even touching, forming a first guide channel 80, and then the entire component is installed on the fiber optic docking body 6. At this time, the first component 8 is in the first state. After the first part 81 and the second part 82 are removed from the fiber optic docking body 6, they can be rotated in the opposite direction to move their inner surfaces away from each other, thereby allowing the first part 81 and the second part 82 to separate from the output fiber optic 11, exposing the fiber optic operating part 110 near the output fiber optic 11. At this time, the first component 8 is in the second state. Therefore, in the second state, even after the first part 81 and the second part 82 are rotated open and disconnected from the output fiber optic 11, they still maintain a connection.

[0083] When using radial linear movement, the first part 81 and the second part 82 are two separate parts (not shown in the figure). Before docking, the first part 81 and the second part 82 are assembled into one unit and then installed onto the fiber optic docking body 6. At this time, the first component 8 is in the first state. After the first part 81 and the second part 82 are removed from the fiber optic docking body 6, the first part 81 and the second part 82 naturally separate, exposing the fiber optic operating part 110 near the output fiber optic 11. At this time, the first component 8 is in the second state.

[0084] In this embodiment, by setting the first component 8 as a first part 81 and a second part 82 that can be opened and closed, during the process of switching the first component 8 from the first state to the second state, the first part 81 and the second part 82 can be opened after the first part 81 and the second part 82 are separated from the optical fiber docking body 6, so as to expose the optical fiber operating part 110 on the output optical fiber 11. There is no need to operate the first component 8 to move axially relative to the output optical fiber 11 by a large margin. The requirements for the matching degree of the inner contour of the first guide channel 80, the outer contour of the near end of the output optical fiber 11, and the position of the optical fiber operating part 110 are lower, the structure is simpler, and a relatively longer first guide channel 80 can be constructed, which is beneficial to the docking of the output optical fiber 11.

[0085] In one embodiment, the first end of the first part 81 and the first end of the second part 82 are pivotally hinged, such as... Figure 6 As shown, the lower ends of the first part 81 and the second part 82 are hinged by a pivot, the axis of which is parallel to the axes of the first part 81 and the second part 82, allowing the first part 81 and the second part 82 to be opened and closed by rotation. After closing, the second ends of the first part 81 and the second part 82 approach each other, at which point they can be mounted as a whole onto the optical fiber docking body 6. In this embodiment, to facilitate the opening of the first part 81 and the second part 82, protrusions can be provided on the outer surfaces of the first part 81 and the second part 82, and the first part 81 and the second part 82 can be opened by moving the protrusions.

[0086] In one embodiment of the output optical fiber 11, such as Figure 10 As shown, the fiber operation section 110 at the near end of the output fiber 11 includes a first operation section 1100 and a second operation section 1101 distributed along the axial direction. The first operation section 1100 and the second operation section 1101 are distributed from the near end to the far end of the output fiber 11, with the near end of the fiber extending beyond the near end face of the first operation section 1100. The diameter of the first operation section 1100 is smaller than the diameter of the second operation section 1101. During the docking process, both the first operation section 1100 and the second operation section 1101 need to be inserted into the first guide channel 80.

[0087] Therefore, in order to improve the accuracy of the output fiber optic cable 11 connection, such as Figure 10As shown, the distal end of the first guiding channel 80 is configured as a first constricted section 803 that gradually narrows from the distal end to the proximal end, and the proximal end of the first guiding channel 80 is configured as a first equal-diameter section 800, the inner diameter of which matches the outer diameter of the proximal end of the output optical fiber 11. Since the output optical fiber 11 is inserted from the distal end of the first guiding channel 80 and extends from the proximal end, configuring the distal end of the first guiding channel 80 as the first constricted section 803 can guide the insertion of the output optical fiber 11. When the output optical fiber 11 is inserted into the first equal-diameter section 800, since the first equal-diameter section 800 is a channel with the same diameter that matches the outer diameter of the proximal end of the output optical fiber, the first equal-diameter section 800 can orient the insertion process of the output optical fiber 11, enabling the output optical fiber 11 to be accurately connected into the optical fiber connection channel 62 of the optical fiber connection body 6.

[0088] In one embodiment, the proximal end of the output optical fiber includes a first operating portion 1100 and a second operating portion 1101, and the diameter of the first operating portion 1100 is smaller than the diameter of the second operating portion 1101. This is used to guide the movement of the first operating portion 1100 and the second operating portion 1101 within the first guiding channel 60. Figure 6 The first guiding channel 60 shown comprises a first equal-diameter section 800, a second constricted section 801, a second equal-diameter section 802, and a first constricted section 803 arranged sequentially from the proximal end to the distal end. The second constricted section 801 and the first constricted section 803 are constricted in shape, gradually narrowing from the distal end to the proximal end. With this arrangement, the diameter of the first equal-diameter section 800 is smaller than the diameter of the second equal-diameter section 802, and the diameter of the first equal-diameter section 800 matches the diameter of the first operating part 110, while the diameter of the second equal-diameter section 802 matches the diameter of the second operating part 110. Before docking, the proximal end of the output optical fiber 11 is guided into the second equal-diameter section 802 through the constricted and larger-diameter first constricted section 803. During docking, the smaller-diameter second constricted section 801 further guides the first operating part 1100 into the first equal-diameter section 800. After docking is completed, the first operating unit 1100 can remain within the first equal-diameter section 800, while the second operating unit 1101 remains within the second narrowed section 801. In this embodiment, the setting of the second narrowed section 801 and the first narrowed section 803 enables the output optical fiber 11 to be guided step by step during the docking process, thereby ensuring the coaxiality of the output optical fiber 11 and the optical fiber docking channel 62 and improving the docking accuracy.

[0089] Based on the implementation where the first component 8 needs to be separated from the output optical fiber 11 to be in the second state, to support the proximal end of the output optical fiber 11, such as Figure 5 and Figure 6As shown, the fiber optic guiding mechanism also includes a second component 9. The first end of the second component 9 is used to connect to the fiber optic docking body 6. After connection, the first component 8, in its first state, is located between the fiber optic docking body 6 and the second end of the second component 9. The second end of the second component 9 is used to support the output fiber 11. Specifically, during the docking process of the output fiber 11, the proximal end of the output fiber 11 first passes through the second component 9, then through the first guiding channel 80 within the first component 8, and finally connects to the second channel 200 on the fiber optic docking body 6. Throughout this process, the second end of the second component 9 remains in contact with the output fiber 11, providing support for it.

[0090] After the output fiber 11 is connected, in order to better support and position the output fiber 11, such as Figure 7 As shown, the second component 9 includes a connecting arm 90 and a fastening assembly 91. The first end of the connecting arm 90 is used to connect with the optical fiber docking body 6, specifically by snap-fit ​​connection, plug-in fixation, or screw connection, etc. The fastening assembly 91 is movably disposed at the second end of the connecting arm 90, forming a second guide channel 92 between the fastening assembly 91 and the second end of the connecting arm 90. Before the output optical fiber 11 is docked, the fastening assembly 91 can be in a relaxed or open state, thereby facilitating the insertion of the output optical fiber 11 into the second guide channel 92. After the output optical fiber 11 is fully docked with the second channel 200, the fastening assembly 91 can be operated to fasten onto the external structure of the output optical fiber 11, for example, fastening and fixing it to the outer shell or cooling sleeve structure of the output optical fiber 11, thereby fixing the external structure of the output optical fiber 11 and positioning the position of the output optical fiber 11. In this embodiment, the setting of the connecting arm 90 and the fastening assembly 91 can both support and position the output optical fiber 11, thereby facilitating the docking of the output optical fiber 11 and improving the stability after docking.

[0091] It should be noted that after the fastening assembly 91 is fastened to the external structure of the output optical fiber 11, the output optical fiber 11 itself can still be operatively rotated about the axis and moved linearly along the axis relative to the external structure.

[0092] In one implementation, such as Figure 7 As shown, the fastening assembly 91 includes a first fastening member 910 and a second fastening member 911. The first end of the first fastening member 910 is hinged to a first side of the connecting arm 90, and its second end is buoyantly disposed outside a second side of the connecting arm 90. A second guide channel 92 is provided between the first fastening member 910 and the second end of the connecting arm 90. Figure 8As shown, the first end of the second fastening member 911 is hinged to the second side of the connecting arm 90 and is provided with a pressing cam 9110. The pressing cam 9110 is used to press the second end of the first fastening member 910 when the second fastening member 911 is rotated to the fastening position, so that the first fastening member 910 is fastened and fixed to the external structure of the output optical fiber 11.

[0093] Specifically, in this embodiment, the first fastening member 910 and the second fastening member 911 together form the fastening assembly 91. The first fastening member 910 is located below the second fastening member 911. The first end of the first fastening member 910 is hinged to the first side of the connecting arm 90, while the second end remains close to the second side of the connecting arm 90. In the relaxed state, the first fastening member 910 has a certain amount of floating relative to the connecting arm 90. In other words, the first fastening member 910 can rotate relative to the connecting arm 90 within a small angle range, thereby changing the distance between the second end of the first fastening member 910 and the second side of the connecting arm 90. Since the second guiding channel 92 is located between the first fastening member 910 and the connecting arm 90, in the relaxed state, the second guiding channel 92 is allowed to expand to a certain extent. Therefore, in this state, it is beneficial for the output optical fiber 11 to pass through the second guiding channel 92. To ensure the first fastening member 910 can be firmly secured to the output optical fiber 11, a second fastening member 911 is positioned above the first fastening member 910. The first end of the second fastening member 911 is hinged to the second side of the connecting arm 90, and a pressing cam 9110 is provided at the first end of the second fastening member 911. When the second fastening member 911 rotates towards the first side of the connecting arm 90, the pressing cam 9110 gradually presses against the second end of the first fastening member 910 and applies pressure, thereby securing the first fastening member 910 to the external structure of the output optical fiber 11. Furthermore, the pressing cam 9110 provides a certain degree of self-locking, eliminating the need for an additional locking structure. The overall structure is simpler and the operation is more convenient.

[0094] In this embodiment, the first fastening member 910 and the second fastening member 911 facilitate the insertion of the output optical fiber 11 into the second guide channel 92, making it easier to connect the output optical fiber 11. After connection, the output optical fiber 11 can be pressed and fixed onto the external structure in a relatively simple operation to position the output optical fiber 11.

[0095] In another embodiment, the fastening assembly 91 includes a third fastening member (not shown in the figure), the first end of which is hinged to a first side of the connecting arm 90, and the second end of which is snap-fitted to a second side of the connecting arm 90. After fastening, the third fastening member presses against the external structure of the output optical fiber 11, thereby positioning the output optical fiber 11.

[0096] To prevent overtravel during the axial docking of the output optical fiber 11, a first positioning part is provided at the second end of the connecting arm 90. The first positioning part is used to axially abut against the second positioning part of the input optical fiber to position the axial position of the input optical fiber during the docking process.

[0097] Specifically, the second positioning part can be disposed on the external structure near the end of the output optical fiber 11, such as on the outer shell or cooling sleeve structure. As the output optical fiber 11 enters and moves through the second guide channel 92 and within the first guide channel 80, the second positioning part gradually approaches the first positioning part. After the second positioning part abuts against the first positioning part, further movement of the output optical fiber 11 is restricted. At this time, the output optical fiber 11 is in a preset docking position. Through the cooperation of the first positioning part and the second positioning part, the axial position of the output optical fiber 11 during the docking process can be accurately positioned, avoiding insufficient docking of the output optical fiber 11 or collision during the docking process.

[0098] In one embodiment, the first positioning part may be the end face of the distal end of the connecting arm 90, and the second positioning part may be a convex ring disposed on the outer surface of the output optical fiber 11. In another embodiment, the first positioning part may also be an arc-shaped stepped surface disposed within the second guiding channel 92, and the second positioning part may be a convex ring disposed on the surface of the output optical fiber 11.

[0099] According to another aspect of the present invention, an optical fiber docking mechanism is provided, comprising the above-described optical fiber coupling device, optical fiber guiding mechanism, and optical fiber docking body.

[0100] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A fiber optic coupling device for laser therapy, characterized in that, include: The first unit is provided with a first connecting part, which is used to be detachably connected to the input optical fiber; The second unit is rotatably connected to the first unit. The second unit is provided with a second connecting part, which is used to be detachably connected to the output optical fiber. There is an optical path between the first connecting part and the second connecting part. At least a portion of the second unit is used for a drive connection with the detection end of the angle detection component, so that the angle detection component can detect the rotation angle of the second unit.

2. The optical fiber coupling device according to claim 1, characterized in that, The first connection portion includes a first channel located within the first unit, the first channel being detachably connected to an input optical fiber.

3. The optical fiber coupling device according to claim 1, characterized in that, The second connection includes a second channel located within the second unit, the second channel being detachably connected to the output optical fiber.

4. The optical fiber coupling device according to claim 1, characterized in that, It also includes a rotating component, which is disposed between the first unit and the second unit.

5. The optical fiber coupling device according to claim 4, characterized in that, The rotating component includes rolling elements that are rotatable relative to the first unit and the second unit; or... The rotating component includes a first component and a second component that can rotate relative to each other, the first component being connected to the first unit and the second component being connected to the second unit.

6. The optical fiber coupling device according to claim 1, characterized in that, The proximal end of the first unit extends out of the proximal end of the second unit, and the proximal end of the first unit is provided with a third connecting part, which is used to connect to the fixed end of the optical fiber docking body.

7. The optical fiber coupling device according to claim 6, characterized in that, The third connection part includes a first snap-fit ​​part located at the near end of the first unit, which is used to snap-fit ​​with the fixed end of the optical fiber docking body.

8. The optical fiber coupling device according to claim 7, characterized in that, The first snap-fit ​​portion includes a snap-fit ​​protrusion disposed on the outer peripheral surface of the first unit.

9. The optical fiber coupling device according to claim 3, characterized in that, The second unit is provided with a fourth connecting part and a fifth connecting part, which are distributed along the axial direction of the second unit. The fourth connecting part is used for transmission connection with the drive end of the optical fiber docking body, and the fifth connecting part is used for connection with the angle detection component of the optical fiber docking body.

10. The optical fiber coupling device according to claim 1, characterized in that, The second unit includes a connecting body and a connector. The proximal end of the body is inserted into and rotatably connected to the first unit, and the distal end of the body is inserted into and fixed to the connector. The second connecting part is disposed on the connector, and the optical path is disposed within the body.

11. The optical fiber coupling device according to claim 1, characterized in that, The second unit is provided with a first lens and a second lens, which are located at both ends of the second unit and distributed along the axial direction.

12. A fiber optic docking mechanism for laser therapy, characterized in that, include: The fiber optic connector consists of a drive end and a fixed end; Fiber optic coupling device, including: The first unit is fixed to the fixed end, and the first unit is provided with a first connecting part, which is used to detachably connect to the input optical fiber. The second unit is rotatably connected to the first unit and is driven by the drive end. The second unit is provided with a second connecting part, which is used to detachably connect to the output optical fiber. There is an optical path between the first connecting part and the second connecting part.

13. The optical fiber docking mechanism according to claim 12, characterized in that, The fixed end includes a base, and an installation channel is provided in the base, wherein at least a portion of the first unit and the second unit are located in the installation channel; The driving end includes a driving wheel, which is sleeved and fixed on the second unit; The fiber optic docking mechanism also includes an angle detection component, the angle detection end of which is fixed on the second unit and used to detect the rotation angle of the second unit.

14. The optical fiber docking mechanism according to claim 13, characterized in that, The fiber optic docking body also includes: The base is used for fixed connection with the main body of the medical device; A motion platform is movably mounted on the base, and the base is fixed to the motion platform.

15. The optical fiber docking mechanism according to claim 12, characterized in that, Also includes: The second component has a first end connected to the optical fiber docking body and a second end used to support and position the output optical fiber.

16. The optical fiber docking mechanism according to claim 15, characterized in that, Also includes: The first component has a first guiding channel for the output optical fiber to pass through. The first component is detachably connected to the optical fiber docking body. The first component has a first state and a second state. In the first state, the first component is connected to the optical fiber docking body and is located between the optical fiber docking body and the second component, and the first guide channel is docked to the second connection part; In the second state, the first component separates from the optical fiber docking body, exposing the optical fiber operating part near the output optical fiber.

17. A laser ablation system, characterized in that, Includes the fiber optic coupling device for laser therapy as described in any one of claims 1 to 11, or the fiber optic docking mechanism as described in any one of claims 12 to 16; as well as Laser generator; An input optical fiber is connected to the laser generator at its near end and to the first unit at its far end. The output optical fiber is connected to the second unit at its near end and has a laser emission section at its far end.

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