Medical optical fiber coupling device

Abstract

The utility model discloses a medical optical fiber coupling device. The medical optical fiber coupling device comprises an input optical fiber module and an output optical fiber module which are sequentially arranged along a light beam transmission direction, the input optical fiber module is connected with the laser and used for outputting light beams emitted by the laser. The output optical fiber module is used for transmitting light beams to an application end; the input optical fiber module is parallel to the plane where the base of the medical optical fiber coupling device is located. The output optical fiber module intersects with the plane where the base is located, and the included angle theta meets theta < lt >; 10 degrees. By adopting the technical means, the output optical fiber module intersects with the plane where the base is located, so that return light can be prevented from being coupled into the input optical fiber module along an original light path, and the risk that the laser is damaged by the return light is eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of laser medical treatment, in particular to a medical optical fiber coupling device. Background Art

[0002] Fiber optic coupler is a device used to connect optical fibers and realize optical signal transmission. Fiber optic coupler can realize the connection between optical fibers of different types or diameters, can adapt to different interfaces and connection methods, and reduce the loss and reflection of optical signals. Fiber optic coupler has a wide range of application value in optical communication, optical sensing, laser processing, laser medical treatment and other fields.

[0003] During clinical use of lasers, due to the difference in the refractive index of the optical fiber and the refractive index of air, Fresnel reflection will occur when the laser is transmitted at the interface of the optical fiber application end. The reflectivity of each end face is usually about 4%-5%. The reflected light at the end face of the medical optical fiber is reversely amplified by the laser, which can easily cause damage to the laser. Usually, laser manufacturers add one or more additional magneto-optical isolators inside the laser, which not only greatly increases the cost of the laser, but also because the isolation of the magneto-optical isolator is very sensitive to temperature, the isolation effect is greatly reduced at high temperatures, and it may even fail to achieve the purpose of isolating the reflected light, greatly increasing the risk of damage to the laser. Therefore, there is an urgent need to design a low-cost, high-reliability device to isolate the reflected light from the laser. Utility Model Content

[0004] The embodiment of the utility model provides a medical optical fiber coupling device to isolate the forward light beam from the return light, prevent the return light from being re-coupled to the laser, and eliminate the risk of the laser being damaged by the return light.

[0005] The embodiment of the utility model provides a medical optical fiber coupling device, comprising: an input optical fiber module and an output optical fiber module arranged in sequence along the light beam transmission direction;

[0006] The input optical fiber module is connected to the laser and is used to output the light beam emitted by the laser;

[0007] The output optical fiber module is used to transmit the light beam to the application end;

[0008] The input optical fiber module is parallel to the plane where the base of the medical optical fiber coupling device is located; the output optical fiber module intersects with the plane where the base is located, and the angle θ satisfies θ<10°.

[0009] Optional, 3°≤θ≤8°

[0010] Optionally, a side of the output optical fiber module close to the input optical fiber module is inclined toward a direction close to the base.

[0011] Optionally, the input optical fiber module includes an input optical fiber connector and an input optical fiber; one end of the input optical fiber is located in the input optical fiber connector, and the outer diameter of the input optical fiber is equal to the inner diameter of the input optical fiber connector;

[0012] The output optical fiber module comprises an output optical fiber connector and an output optical fiber; one end of the output optical fiber is located in the output optical fiber connector, and the outer diameter of the output optical fiber is equal to the inner diameter of the output optical fiber connector.

[0013] Optionally, the medical optical fiber coupling device further includes: an elastic position detection module and a first control module;

[0014] The elastic position detection module comprises an elastic component and a switch component which are connected and arranged, the switch component is used to abut against the output optical fiber in the output optical fiber module, and the elastic component is used to reset the switch component;

[0015] The first control module is electrically connected to the elastic position detection module and the laser respectively, and is used to control the laser to start when the switch component abuts against the output optical fiber.

[0016] Optionally, the medical optical fiber coupling device further comprises: a coupling lens module;

[0017] The coupling lens module is located in the optical path between the input optical fiber module and the output optical fiber module;

[0018] The coupling lens module comprises a coupling lens group, wherein the coupling lens group comprises at least one coupling lens, the optical focal length of the coupling lens group is positive and the position of the coupling lens group is adjustable.

[0019] Optionally, the medical optical fiber coupling device further comprises: a guiding light module;

[0020] The guiding light module is used to emit guiding light, and the output optical fiber module is located on the propagation path of the guiding light; the guiding light module is used to indicate the position of the output optical fiber module.

[0021] Optionally, the medical optical fiber coupling device further comprises: a collimation module;

[0022] The collimation module is located in the optical path between the input optical fiber module and the output optical fiber module;

[0023] The collimating module includes at least one collimating lens, which is used to collimate the light beam output by the input optical fiber module.

[0024] Optionally, the medical optical fiber coupling device further includes: a power detection module and a second control module;

[0025] The power detection module is located in the optical path between the input optical fiber module and the output optical fiber module;

[0026] The power detection module comprises a lens group and a photosensitive sensor arranged in sequence along the light beam transmission direction; the optical power of the lens group is positive;

[0027] The second control module is electrically connected to the photosensor, and is used to determine the power according to the light beam converged by the lens group and received by the photosensor.

[0028] Optionally, the medical optical fiber coupling device further includes: a transmissive module and a reflective module;

[0029] The transflective module is located in the optical path between the input optical fiber module and the power detection module, and is used to reflect the light beam to the reflective module and transmit the light beam to the power detection module;

[0030] The reflection module is located in the optical path between the transflective module and the output optical fiber module, and is used to receive the light beam reflected by the transflective module and reflect it to the output optical fiber module.

[0031] According to the technical solution provided by the embodiment of the utility model, the input optical fiber module is parallel to the plane where the base of the medical optical fiber coupling device is located; the output optical fiber module intersects with the plane where the base is located, and the angle θ satisfies θ<10°, that is, the output optical fiber module is not parallel to the plane where the base is located, and there is a certain angle, so that the forward light beam output by the laser is transmitted to the output optical fiber module after passing through the input optical fiber module, which can prevent the return light from returning to the input optical fiber module along the original optical path and coupling to the laser, thereby eliminating the risk of the laser being damaged by the return light. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic top view of a medical optical fiber coupling device provided by an embodiment of the utility model;

[0033] Figure 2 A schematic diagram of the structure of an input optical fiber connector provided by an embodiment of the utility model;

[0034] Figure 3 A schematic structural diagram of an elastic position detection device provided by an embodiment of the utility model;

[0035] Figure 4 A schematic diagram of the structure of a coupling lens module provided by an embodiment of the utility model;

[0036] Figure 5 A light path principle diagram of a medical optical fiber coupling device provided in an embodiment of the utility model;

[0037] Figure 6 A schematic diagram of the structure of a guide light module provided in an embodiment of the utility model;

[0038] Figure 7 A schematic structural diagram of a collimation module provided in an embodiment of the utility model;

[0039] Figure 8 A schematic diagram of the structure of a power detection module provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0041] Before introducing the technical solution of the embodiment of the utility model in detail, the working principle of the head-up display module is first introduced.

[0042] Figure 1 A schematic top view of a medical optical fiber coupling device provided in an embodiment of the utility model is shown as follows: Figure 1 As shown, the medical fiber optic coupling device includes: an input fiber optic module 10 and an output fiber optic module 20 arranged in sequence along the light beam transmission direction; the input fiber optic module 10 is connected to the laser and is used to output the light beam emitted by the laser; the output fiber optic module 20 is used to transmit the light beam to the application end; the input fiber optic module 10 is parallel to the plane where the base 30 of the medical fiber optic coupling device is located; the output fiber optic module 20 intersects with the plane where the base 30 is located, and the angle θ satisfies θ<10°.

[0043] Specifically, the input fiber module 10 includes an input fiber 101 and an input fiber connector. One end of the input fiber 101 is connected to the laser, and the other end is inserted into the input fiber connector. The output fiber module 20 includes an output fiber 201 and an output fiber connector. One end of the output fiber 201 is inserted into the output fiber connector. The end is cut into an optical surface perpendicular to the length direction of the fiber. If necessary, it needs to be polished and coaxial with the output fiber connector. The other end of the output fiber 201 is the application end, which can be processed according to clinical needs. Exemplarily, the application end is divided into an ordinary application end and a special application end according to whether the end of the optical fiber needs special processing. The ordinary application end directly constitutes the application component with the end of the output fiber, and the optical fiber light output end is a straight flat cut end face; the special application end is to perform certain processing on the end of the output fiber to meet the intended use, thereby changing the output mode of the light beam.

[0044] Exemplarily, the output optical fiber 201 is usually composed of a quartz optical fiber with low transmission loss and high temperature resistance.

[0045] Specifically, the input fiber module 10 and the output fiber module 20 are sequentially arranged along the light beam transmission direction, so that the light beam emitted by the laser can be transmitted to the application end of the output fiber 201 through the input fiber 101, so that the doctor can treat, examine and diagnose a certain part of the human body. In the prior art, the input fiber module 10 and the output fiber module 20 are parallel to the plane where the base 30 of the medical fiber coupling device is located. Due to the difference in the refractive index of the optical fiber and the refractive index of the air, Fresnel reflection occurs when the laser is transmitted at the interface of the optical fiber application end. Usually, the reflectivity of each end face is about 4%-5%. In this way, the return light of the end face of the medical optical fiber is easily transmitted to the input fiber module 10 along the original optical path, and then coupled to the laser, and is reversely amplified by the laser, which is very likely to cause damage to the laser.

[0046] In the embodiment of the utility model, the input fiber optic module 10 is arranged to be parallel to the plane where the base 30 of the medical fiber optic coupling device is located, and the output fiber optic module 20 intersects with the plane where the base 30 is located, and the angle θ satisfies θ<10°. That is, the output fiber optic module 20 is not parallel to the plane where the base 30 is located, and there is a certain angle. In this way, it can be ensured that the returned light will not return to the input fiber optic module 10 along the original optical path, and then the forward light beam emitted by the laser can be isolated from the returned light, avoiding the returned light from being re-coupled to the laser, thereby eliminating the risk of the laser being damaged by the returned light, which is beneficial to ensuring the reliability of the medical fiber optic coupling device.

[0047] For example, the base 30 is made of a whole piece of metal through cutting, drilling and surface treatment. The base 30 has threaded holes inside for fixing lens holders and other related parts; two opposite sides of the base 30 are at a certain angle and are respectively processed with threaded holes for installing optical fiber connectors.

[0048] The medical fiber optic coupling device provided by the embodiment of the utility model is configured such that the output fiber optic module intersects with the plane where the base is located, and the angle θ satisfies θ<10°, that is, the output fiber optic module is not parallel to the plane where the base is located, and there is a certain angle, so that the forward light beam output by the laser is transmitted to the output fiber optic module after passing through the input fiber optic module, which can prevent the return light from returning to the input fiber optic module along the original light path and coupling to the laser, thereby eliminating the risk of the laser being damaged by the return light.

[0049] Optional, continue to refer to Figure 1 , 3°≤θ≤8°.

[0050] Specifically, when θ<3°, it means that the inclination angle of the output optical fiber module 20 is too small, so the forward light beam and the return light cannot be isolated, and there is still a risk that part of the return light is coupled to the laser, thereby damaging the laser.

[0051] Specifically, when θ>8°, it means that the inclination angle of the output optical fiber module 20 is too large. Since the output optical fiber has a certain range of incident angles, when the inclination angle is too large, the light beam output by the input optical fiber module 10 cannot enter the output optical fiber module 20, and thus cannot be used in medical treatment to realize diagnosis and other functions.

[0052] Preferably, 4°≤θ≤5°, which can ensure that the light beam output by the input optical fiber module 10 enters the output optical fiber module 20 on the one hand, and can isolate the forward light beam from the return light on the other hand, thereby preventing the return light from being coupled to the laser and damaging the laser.

[0053] Optional, continue to refer to Figure 1 The side of the output optical fiber module 20 close to the input optical fiber module 10 is inclined toward the direction close to the base 30 .

[0054] Specifically, the side of the output optical fiber module 20 close to the input optical fiber module 10 is tilted toward the direction close to the base 30, which can further ensure that the returned light reflected by the end face will not return along the original optical path, thereby isolating the forward light beam and the returned light, preventing the returned light from being coupled to the laser and damaging the laser.

[0055] Optional, Figure 2 A schematic diagram of the structure of an input optical fiber connector provided by an embodiment of the utility model, continue to refer to Figure 1 and Figure 2 The input fiber optic module 10 includes an input fiber optic connector 102 and an input fiber optic 101; one end of the input fiber optic 101 is located in the input fiber optic connector 102, and the outer diameter of the input fiber optic 101 is equal to the inner diameter of the input fiber optic connector 102; the output fiber optic module 20 includes an output fiber optic connector and an output fiber optic 201; one end of the output fiber optic 201 is located in the output fiber optic connector, and the outer diameter of the output fiber optic 201 is equal to the inner diameter of the output fiber optic connector.

[0056] Specifically, the outer diameter of the input optical fiber 101 is equal to the inner diameter of the input optical fiber connector 102, so that the input optical fiber 101 and the input optical fiber connector 102 can be ensured to have a high degree of concentricity. It is understandable that Figure 2Only the structure of the input optical fiber connector is shown. It should be noted that the structure of the output optical fiber connector is the same as that of the input optical fiber connector, and the outer diameter of the output optical fiber 201 is equal to the inner diameter of the output optical fiber connector. This ensures that the output optical fiber 201 and the output optical fiber connector have a high concentricity, thereby improving the transmission efficiency of the light beam.

[0057] Exemplarily, the input optical fiber connector and the output optical fiber connector can both be hollow cylindrical structures with through holes on the inner wall and threads on the outer wall. The thread specifications of the outer wall are the same as those of the base, and they are fixed to the left and right sides of the base respectively through their own threads.

[0058] Optional, Figure 3 A schematic diagram of the structure of an elastic position detection device provided by an embodiment of the utility model, referring to Figure 1 and Figure 3 The medical fiber optic coupling device also includes: an elastic position detection module 40 and a first control module 50; the elastic position detection module 40 includes an elastic component 401 and a switch component 402 that are connected and arranged, the switch component 402 is used to abut against the output optical fiber 201 in the output optical fiber module 20, and the elastic component 401 is used to reset the switch component 402; the first control module 50 is electrically connected to the elastic position detection module 40 and the laser respectively, and is used to control the start of the laser when the switch component 402 abuts against the output optical fiber 201.

[0059] Specifically, in the medical field, doctors need to frequently replace the output optical fiber 201 during the diagnosis process. Therefore, by setting up an elastic position detection module 40, it is possible to detect whether the output optical fiber 201 is installed in place, that is, when the output optical fiber 201 is abutted against the switching component 201, that is, when the output optical fiber 201 is inserted into the appropriate position, the switching component 402 is compressed, and the switch component 402 is in the on state. The first control module 50 can send a conduction signal to the host of the laser, allowing the laser to emit laser light, otherwise the laser is not allowed to emit light. This can avoid laser safety accidents caused by abnormal position of the output optical fiber 201.

[0060] Furthermore, the elastic component 401 can be understood as a spring, and the switch component 402 can be understood as a micro switch. The spring is responsible for adjusting the position of the micro switch to ensure that the micro switch 402 is always located at a suitable position.

[0061] Optional, Figure 4 A schematic diagram of the structure of a coupling lens module provided by an embodiment of the utility model, Figure 5 The optical path principle diagram of a medical optical fiber coupling device provided by the embodiment of the utility model is as follows: Figure 4 and Figure 5As shown, the medical optical fiber coupling device also includes: a coupling lens module 60; the coupling lens module 60 is located in the optical path between the input optical fiber module 10 and the output optical fiber module 20; the coupling lens module 60 includes a coupling lens group 601, the coupling lens group 601 includes at least one coupling lens 6011, the optical focal length of the coupling lens group 601 is positive and the position of the coupling lens group 601 is adjustable.

[0062] Specifically, since the diameter of the beam output by the laser is in the range of about 4 mm-10 mm, but the diameter of the beam that the optical fiber can receive is only in the range of 100 μm-200 μm, the coupling lens group 60 can be provided to converge the beam and input it into the output optical fiber 201 .

[0063] Further, the coupling lens module 60 includes a coupling lens group 601, and the coupling lens group 601 includes at least one coupling lens 6011. The optical focal length of the coupling lens group 601 is positive, so that the light beam can be converged into a light spot. In addition, the position of the coupling lens group 601 is adjustable, that is, by adjusting the position of the coupling lens group 601, the light converged by the coupling lens group 60 can be located at the center of the output optical fiber 201. Specifically, the coupling lens module 60 is used to focus the laser into a beam whose waist and divergence angle are matched with the core diameter and numerical aperture of the medical optical fiber. When the distance between the end face of the medical optical fiber and the coupling lens group 601 matches, the laser can be coupled into the medical optical fiber and transmitted flexibly. The coupling lens module 60 is composed of a coupling lens group 601, a lens seat 602, a coupling lens bracket 603, a plunger spring 605 and two fine-tuning screws 604. By adjusting the position of the coupling lens module 60, the concentricity of the coupling lens module 60 relative to the medical optical fiber, that is, the output optical fiber 201 can be adjusted. First, the coupling lens module 60 is fixed in the lens holder 602 by glue or a pressing block, and then the lens holder 602 is installed in the coupling lens bracket 603. The positions of the plunger spring 605 and the fine-tuning screw 604 are adjusted so that the lens holder 602 is elastically fixed in the coupling lens bracket 603 and the laser is focused by the coupling lens group 601, so that the light spot is located at the center of the end face of the output optical fiber 201, which can improve the transmission efficiency of the light beam.

[0064] Optional, Figure 6 A schematic diagram of the structure of a guide light module provided in an embodiment of the utility model, continue to refer to Figure 1 , Figure 5 and Figure 6 The medical fiber optic coupling device also includes: a guide light module 70; the guide light module 70 is used to emit guide light, and the output fiber optic module 20 is located on the propagation path of the guide light; the guide light module 70 is used to indicate the position of the output fiber optic module 20.

[0065] Specifically, after the optical fiber end face is inserted into the human body, in order to determine the insertion position of the optical fiber, since blood is generally red, the medical field usually uses green guide light, that is, the green guide light is coupled to the output optical fiber 201 through the coupling lens group 601, and then presents green light at the position where the optical fiber is inserted into the human body, so that the doctor can understand the position and status of the optical fiber end face in the human tissue.

[0066] It is understandable that the guiding light module 70 includes a laser diode 701 and a laser diode bracket 702. The visible light emitted by the laser diode 701 forms a circular light spot with good stacking properties after passing through the self-contained shaping optical element. Exemplarily, the laser diode 701 emits green laser. The laser diode bracket 702 is designed with a diode mounting hole to support and dissipate heat for the laser diode 701.

[0067] Optional, Figure 7 A schematic diagram of the structure of a collimation module provided in an embodiment of the utility model, continue to refer to Figure 1 , Figure 5 and Figure 7 The medical fiber optic coupling device also includes: a collimation module 80; the collimation module 80 is located in the optical path between the input fiber optic module 10 and the output fiber optic module 20; the collimation module 80 includes at least one collimation lens 801 for collimating the light beam output by the input fiber optic module 10.

[0068] Specifically, the collimation module 80 is used to collimate the light beam output by the laser. Even if the subsequent light path is relatively long, the spot size of the collimated light beam will not change during the transmission process.

[0069] It should be noted that the collimating lens 801 is generally an optical glass with low laser absorption, such as quartz glass, calcium fluoride glass, etc. The convex lens processed by grinding, polishing and other processes is used to reduce the divergence angle of the laser beam. It is understandable that an anti-reflection film is usually plated on the light-transmitting surface of the collimating lens 801 to reduce the reflection loss of the surface. The focal length and diameter of the collimating lens 801 must match the input optical fiber 101.

[0070] In addition, the collimating module 80 further includes a collimating lens frame 802 , which is made of alloy material and is designed with a mounting hole for the collimating lens 801 for supporting the collimating lens 801 . The collimating lens frame 802 is mounted on the bottom surface of the base 30 .

[0071] Optional, Figure 8 A schematic diagram of a power detection module provided by the present utility model embodiment, continue to refer to Figure 1 , Figure 5 and Figure 8The medical fiber optic coupling device also includes: a power detection module 90 and a second control module 100; the power detection module 90 is located in the optical path between the input fiber optic module 10 and the output fiber optic module 20; the power detection module 90 includes a lens group 901 and a photosensitive sensor 902 arranged in sequence along the light beam transmission direction; the optical focal length of the lens group 901 is positive; the second control module 100 is electrically connected to the photosensitive sensor 902, and is used to determine the power according to the light beam converged by the lens group 901 and received by the photosensitive sensor 902.

[0072] Specifically, the focal length of the lens group 901 is positive, so that the laser can be focused into a light spot with a smaller diameter, and then irradiated on the center of the photosensor 902. The photosensor 902 can be composed of a photodiode or a pyroelectric stack, etc., and is responsible for converting the optical signal into an electrical signal. The second control module 100 is electrically connected to the photosensor 902, and determines the power according to the light beam focused by the lens group 901 received by the photosensor 902, for reference by the doctor.

[0073] Furthermore, the power detection module 90 also includes a bracket, which is responsible for supporting the lens group 901 and the photosensor 902 .

[0074] Optional, continue to refer to Figure 1 and Figure 5 The medical fiber optic coupling device also includes: a transflective module 110 and a reflective module 120; the transflective module 110 is located in the optical path between the input optical fiber module 10 and the power detection module 90, and is used to reflect the light beam to the reflective module 120, and transmit the light beam to the power detection module 90; the reflective module 120 is located in the optical path between the transflective module 110 and the output optical fiber module 20, and is used to receive the light beam reflected by the transflective module 110 and reflect it to the output optical fiber module 20.

[0075] Specifically, the light beam output by the laser is collimated by the collimation module 80 and then incident on the transflective module 110. The transflective module 110 transmits the light beam to the power detection module 90, so that the power detection module 90 can detect the laser power transmitted from the transflective module 110. The transflective module 110 is also used to reflect the collimated light beam to the reflection module 120, and then the reflection module 120 can receive the light beam reflected by the transflective module 110 and reflect it to the coupling lens module 60 and the output optical fiber module 20.

[0076] Exemplarily, the transflective module 110 and the reflective module 120 can be 45° plane mirrors, and can be plane mirrors made of optical glass with low laser absorption through grinding, polishing and other processes. The shape can be round or square, and the light-transmitting surface is coated with a high-reflective film with a high reflectivity for 45° incident laser. The 45° plane mirror can reduce laser power loss while changing the direction of the light path.

[0077] Optional, continue to refer to Figure 1 The medical optical fiber coupling device may further include a cover plate 130. The cover plate 130 is a plate-shaped part made of metal and has screw mounting holes, which is used to protect the components in the medical optical fiber coupling device from external contamination.

[0078] Optional, continue to refer to Figure 1 The medical fiber optic coupling device may further include a communication module, which may be integrated with the first controller 50 and the second controller 90. The communication module, the first controller 50 and the second controller 90 are responsible for communicating with the laser host, collecting temperature and humidity parameters in the coupling device, amplifying the power monitoring module signal, driving the laser diode in the guiding light module, processing the fiber optic position sensor signal and other tasks.

[0079] Optional, continue to refer to Figure 1 The medical fiber optic coupling device may further include an electrical connection module 140, which is located on the side wall of the base 30 near the input fiber optic module 10. The electrical connection module 140 includes a plurality of pins, which are responsible for power supply of the medical fiber optic coupling device and communication between the medical fiber optic coupling device and the laser host.

[0080] In summary, the medical fiber coupling device provided by the embodiment of the utility model, by setting the output fiber module to intersect with the plane where the base is located, and satisfying a certain angle range, so that the forward light beam output by the laser is transmitted to the output fiber module after passing through the input fiber module, it can prevent the return light from returning along the original optical path into the input fiber module and coupling to the laser, thereby eliminating the risk of the laser being damaged by the return light. In addition, by setting the power detection module, the guide light module and the elastic position detection module, the integrated setting of the medical fiber coupling device can be realized, while satisfying the flexible transmission of the laser, integrating the functions of laser power monitoring, visible light guidance and coupling fiber position monitoring.

[0081] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A medical optical fiber coupling device, characterized in that: include: An input optical fiber module and an output optical fiber module are sequentially arranged along the light beam transmission direction; The input optical fiber module is connected to the laser and is used to output the light beam emitted by the laser; The output optical fiber module is used to transmit the light beam to the application end; The input optical fiber module is parallel to the plane where the base of the medical optical fiber coupling device is located; the output optical fiber module intersects with the plane where the base is located, and the angle θ satisfies θ<10°.

2. The medical optical fiber coupling device according to claim 1, characterized in that: 3°≤θ≤8°.

3. The medical optical fiber coupling device according to claim 1, characterized in that: A side of the output optical fiber module close to the input optical fiber module is inclined toward a direction close to the base.

4. The medical optical fiber coupling device according to claim 1, characterized in that: The input optical fiber module comprises an input optical fiber connector and an input optical fiber; one end of the input optical fiber is located in the input optical fiber connector, and the outer diameter of the input optical fiber is equal to the inner diameter of the input optical fiber connector; The output optical fiber module comprises an output optical fiber connector and an output optical fiber; one end of the output optical fiber is located in the output optical fiber connector, and the outer diameter of the output optical fiber is equal to the inner diameter of the output optical fiber connector.

5. The medical optical fiber coupling device according to claim 1, characterized in that: The medical optical fiber coupling device further includes: an elastic position detection module and a first control module; The elastic position detection module comprises an elastic component and a switch component which are connected and arranged, the switch component is used to abut against the output optical fiber in the output optical fiber module, and the elastic component is used to reset the switch component; The first control module is electrically connected to the elastic position detection module and the laser respectively, and is used to control the laser to start when the switch component abuts against the output optical fiber.

6. The medical optical fiber coupling device according to claim 1, characterized in that: The medical optical fiber coupling device further comprises: a coupling lens module; The coupling lens module is located in the optical path between the input optical fiber module and the output optical fiber module; The coupling lens module comprises a coupling lens group, wherein the coupling lens group comprises at least one coupling lens, the optical focal length of the coupling lens group is positive and the position of the coupling lens group is adjustable.

7. The medical optical fiber coupling device according to claim 1, characterized in that: The medical optical fiber coupling device further comprises: a guiding light module; The guiding light module is used to emit guiding light, and the output optical fiber module is located on the propagation path of the guiding light; the guiding light module is used to indicate the position of the output optical fiber module.

8. The medical optical fiber coupling device according to claim 1, characterized in that: The medical optical fiber coupling device further comprises: a collimation module; The collimation module is located in the optical path between the input optical fiber module and the output optical fiber module; The collimating module includes at least one collimating lens, which is used to collimate the light beam output by the input optical fiber module.

9. The medical optical fiber coupling device according to claim 1, characterized in that: The medical optical fiber coupling device further includes: a power detection module and a second control module; The power detection module is located in the optical path between the input optical fiber module and the output optical fiber module; The power detection module comprises a lens group and a photosensitive sensor arranged in sequence along the light beam transmission direction; the optical power of the lens group is positive; The second control module is electrically connected to the photosensor, and is used to determine the power according to the light beam converged by the lens group and received by the photosensor.

10. The medical optical fiber coupling device according to claim 9, characterized in that: The medical optical fiber coupling device further comprises: a transmissive module and a reflective module; The transflective module is located in the optical path between the input optical fiber module and the power detection module, and is used to reflect the light beam to the reflective module and transmit the light beam to the power detection module; The reflection module is located in the optical path between the transflective module and the output optical fiber module, and is used to receive the light beam reflected by the transflective module and reflect it to the output optical fiber module.

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