Slip ring system and medical equipment

Abstract

The utility model provides a slip ring system and medical equipment. The slip ring system comprises a rotor, a stator, a light emitter, a light splitting element, a sidelight optical fiber and a light receiver, wherein the light emitter, the light splitting element and the sidelight optical fiber are arranged on the rotor; the light emitter is used for generating a light signal; the optical receiver is used for receiving an optical signal output by the sidelight optical fiber; the light splitting element is connected with the light emitter; the light splitting element is used for decomposing the light signal generated by the light emitter and transmitting the light signal to the sidelight optical fiber. According to the slip ring system, the signal transmission stability of the slip ring system in the related technology is improved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a slip ring system and medical device. Background Technology

[0002] Side-beam optical fibers are increasingly used in the field of optical communication. For example, in computed tomography (CT) equipment, a slip ring system is included. An optical transmitter mounted on the rotor of this slip ring system converts data into optical signals and transmits them to the side-beam optical fiber. An optical receiver receives the optical signals on the side-beam optical fiber, completing the non-contact transmission of data from the rotor to the stator.

[0003] In the slip ring system of related technologies, the optical transmitter is directly connected to a section of side optical fiber to form a transmission loop. As the length of the side optical fiber increases, the light intensity difference between the two ends of the side optical fiber increases, resulting in poor signal transmission stability. Utility Model Content

[0004] Embodiments of this application provide a slip ring system and a medical device for improving the signal transmission stability of slip ring systems in related technologies.

[0005] In a first aspect, embodiments of this application provide a slip ring system, including a rotor and a stator, an optical transmitter, a beam splitter and a side-light fiber disposed on the rotor, and an optical receiver disposed on the stator; the optical transmitter is used to generate an optical signal; the beam splitter is connected to the optical transmitter and is used to decompose the optical signal and transmit it to the side-light fiber; the optical receiver is used to receive the optical signal.

[0006] In some embodiments, the number of the beam splitter is at least one, and the side-lighting optical fibers are provided on both sides of the beam splitter. The number of the side-lighting optical fibers is at least twice that of the beam splitter, and multiple side-lighting optical fibers are connected to form a transmission optical path.

[0007] In some embodiments, at least one of the beam-splitting elements is arranged circumferentially along the emission optical path.

[0008] In some embodiments, the rotor includes a slip ring disk body, on which a groove and a clearance groove are formed; the light emitter and the beam splitter are disposed in the clearance groove, and the side-beam optical fiber is disposed in the groove.

[0009] In some embodiments, the groove extends circumferentially along the slip ring disc body, and the clearance groove communicates with the groove.

[0010] In some embodiments, a reflective layer is provided on the inner wall of the groove.

[0011] In some embodiments, the side-lighting optical fiber includes a core and a light-transmitting sleeve, the light-transmitting sleeve being disposed outside the core; the side-lighting optical fiber has at least one notch that penetrates the sheath to the core.

[0012] In some embodiments, when there are multiple grooves, the grooves extend circumferentially along the side-light optical fiber, the multiple grooves are arranged along the length direction of the side-light optical fiber, and the distance between two adjacent grooves increases along the length direction of the side-light optical fiber.

[0013] In some embodiments, when there are multiple grooves, the multiple grooves are arranged along the length direction of the side-light fiber, and the depth between the multiple grooves increases sequentially along the length direction of the side-light fiber.

[0014] In some embodiments, the cross-sectional area of ​​the side-lighting fiber decreases in the section perpendicular to the length direction of the side-lighting fiber.

[0015] Secondly, embodiments of this application also provide a medical device, including the slip ring system as described in the first aspect.

[0016] The beneficial effects of the slip ring system provided in this application embodiment are as follows: by setting a beam splitter between the optical transmitter and the side optical fiber, the side optical fiber is divided into multiple segments. With the perimeter of the transmission optical path remaining unchanged, compared with using a single side optical fiber to form the transmission optical path, the optical transmitter connects multiple side optical fiber segments through the beam splitter to form the transmission optical path, which indirectly reduces the length of each side optical fiber segment, reduces the light intensity difference between the two ends of the side optical fiber, and improves the uniformity of light intensity on the optical path between the transmitting end and the far end of the transmission optical path, thereby improving the signal transmission stability of the slip ring system. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the slip ring system in some embodiments of this application;

[0019] Figure 2 This is a schematic diagram of the emission optical path in the slip ring system including a beam splitter in Embodiment 1;

[0020] Figure 3 This is a schematic diagram of the optical path of a beam splitter.

[0021] Figure 4 for Figure 2 A three-dimensional schematic diagram of the optical transmitter, beam splitter, and the connection between the side optical fiber and the rotor in the slip ring system;

[0022] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0023] Figure 6 This is a schematic diagram of the side-light fiber structure within the groove in some other embodiments;

[0024] Figure 7 This is an optical path diagram of the side-light fiber in some embodiments;

[0025] Figure 8 This is a schematic diagram of the side-light fiber structure in some embodiments;

[0026] Figure 9 This is a schematic diagram of the side-light fiber structure in some other embodiments;

[0027] Figure 10 This is a schematic cross-sectional view of a side-light fiber with notches in some embodiments;

[0028] Figure 11 This is a comparison diagram of the light intensity of the side-light fiber in the embodiments of this application and the light intensity of the side-light fiber in related technologies;

[0029] Figure 12 This is a schematic diagram of the slip ring system including two beam splitters in Embodiment 2;

[0030] Figure 13 This is a schematic diagram of the side-light fiber in Example 3.

[0031] The following are the labeling elements in the figure:

[0032] 100, Rotor; 200, Stator;

[0033] 10. Light emitter; 11. Slip ring disk; 13. Groove; 14. Clearance groove; 15. Reflective layer;

[0034] 21. Spectrometer; 22. Side-lighting fiber; 220. Scribing; 221. Fiber core; 222. Transmitting sleeve;

[0035] 30. Optical receiver;

[0036] 40. Data system. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0039] Side-beam optical fibers are increasingly used in optical communication, for example, in computed tomography (CT) equipment. CT equipment uses highly sensitive instruments to measure the human body based on the different absorption and transmittance of X-rays by different tissues. The acquired data is then input into a computer, which processes the data to capture cross-sectional or three-dimensional images of the examined area, detecting even small lesions in any part of the body. A CT device consists of several components, including an X-ray tube, detector, DAS (Diverterless Optical Array), array processor, high-voltage generator, collimator, slip ring system, and other CT equipment subsystems. The slip ring system includes a rotor and stator, a light transmitter and side-beam optical fiber fixed to the rotor, and a light receiver mounted on the stator. The light transmitter converts data into optical signals and transmits them to the side-beam optical fiber, while the light receiver receives the optical signals from the side-beam optical fiber, completing the non-contact data transmission from the rotor to the stator.

[0040] In the slip ring system of related technologies, the optical transmitter is directly connected to a section of side optical fiber to form a transmission loop. As the length of the side optical fiber increases, the light intensity difference between the two ends of the side optical fiber increases, resulting in poor signal transmission stability.

[0041] To address the aforementioned problems, this application provides a slip ring system and a medical device. The medical device includes a slip ring system.

[0042] It should be noted that this slip ring system can be used not only in medical devices, such as CT scanners, but also in other non-contact data transmission systems, medical devices, or other equipment.

[0043] like Figures 1-4As shown, the slip ring system includes a rotor 100 and a stator 200, an optical transmitter 10, a beam splitter 21 and a side optical fiber 22 disposed on the rotor 100, and an optical receiver 30 disposed on the stator 200; the optical transmitter 10 is used to generate an optical signal; the beam splitter 21 is connected to the optical transmitter 10 and is used to decompose the optical signal generated by the optical transmitter 10 and transmit it to the side optical fiber 22; the optical receiver 30 is used to receive the optical signal output by the side optical fiber 22.

[0044] With the perimeter of the transmitting optical path remaining unchanged, compared to using a section of side optical fiber 22 to form the transmitting optical path, the optical transmitter 10 connects the side optical fiber 22 through the beam splitter 21 to form the transmitting optical path, which indirectly reduces the length of each section of side optical fiber 22 and reduces the light intensity difference between the two ends of the side optical fiber 22, thereby improving the transmitting end of the transmitting optical path. Figure 1 The end connected to the light emitter 10, i.e. Figure 1 The left end of the middle emission optical path) and the far end ( Figure 1 The uniformity of light intensity on the optical path between the right end of the emitted light path and the middle end.

[0045] The aforementioned optical transmitter 10 is used to generate an optical signal based on the target data of the data system 40. The optical transmitter 10 can be a laser. The optical transmitter 10 and the beam splitter 21 are disposed on the rotor 100. Specifically, the optical transmitter 10 and the beam splitter 21 are fixed on the rotor 100 and can rotate with the rotor 100. The optical receiver 30 is disposed on the stator 200. The aforementioned beam splitter 21 is used to decompose the optical signal generated by the optical transmitter 10 and transmit it to the side optical fiber 22.

[0046] It should be noted that the rotor 100 is the rotating part of the slip ring system, while the stator 200 is the fixed part of the slip ring system.

[0047] The working principle of the slip ring system is as follows: During the rotation of the equipment that needs to transmit data through the slip ring system, the optical transmitter 10, the beam splitter 21 and the side optical fiber 22 can rotate together with the rotor 100. The optical transmitter 10 is used to generate an optical signal according to the target data of the data system 40. After the beam splitter 21 decomposes the optical signal, it is transmitted through the side optical fiber 22. At this time, the optical receiver 30 and the stator 200 are always in a fixed state.

[0048] The aforementioned beam splitting element 21 can be a beam splitter, a grating, or a polarizing beam splitter.

[0049] Figures 1-11 A schematic diagram of a slip ring system including a beam splitter 21 is shown in Embodiment 1. In this embodiment, as... Figure 2As shown, the optical transmitter 10, beam splitter 21, and side-beam fiber 22 are mounted on the rotor 100, and the optical receiver 30 is mounted on the stator 200. The slip ring system includes a beam splitter 21, with a side-beam fiber 22 connected to each side of the beam splitter 21. The two side-beam fibers 22 form a transmission optical path. That is, in one transmission optical path, the number of side-beam fibers 22 is twice the number of beam splitters 21. The optical path principle of the beam splitter 21 and the side-beam fibers 22 is as follows: Figure 3 As shown. Of course, in other embodiments, the slip ring system may include multiple beam splitters 21, and correspondingly, the number of side-beam fibers 22 is twice the number of beam splitters 21. It should be noted that if several side-beam fibers 22 are connected to a beam splitter 21, then the number of side-beam fibers 22 is correspondingly several times the number of beam splitters. The number of side-beam fibers 22 can be twice the number of beam splitters 21, or it can be 3, 4, 5, etc., and no specific limitation is made here.

[0050] In this embodiment, the optical signal is transmitted to two side optical fibers 22 by the beam splitter 21, thus achieving the purpose of beam splitting. Moreover, compared with the transmission optical path formed by a whole side optical fiber in related technologies, the length of each side optical fiber 22 is indirectly reduced, which is beneficial to the uniformity of light intensity distribution on the transmission optical path.

[0051] from Figure 3 As can be seen, the optical transmitter 10 splits the optical signal into two parts after passing through the optical splitter 21, and transmits them to two side optical fibers 22 so that the two side optical fibers 22 can transmit optical signals outward simultaneously.

[0052] Furthermore, the lengths of the two side-light optical fibers 22 can be designed to be equal or nearly equal, thereby reducing the overall light intensity difference in the transmission optical path and further improving the uniformity of light intensity distribution in the transmission optical path, thus improving the stability of signal transmission.

[0053] It should be noted that, when necessary, depending on customer needs, two or more side-light optical fibers 22 can be connected to a single beam splitter 21, without any specific limitations.

[0054] like Figure 4 As shown, in this embodiment, the rotor 100 includes a slip ring disk 11, on which a groove 13 and a clearance groove 14 are formed; the light emitter 10 and the beam splitter 21 are fixed in the clearance groove 14, and the side light fiber 22 is disposed in the groove 13.

[0055] The aforementioned optical transmitter 10 is fixed to the slip ring disk 11. During the rotation of the rotor 100, the optical transmitter 10 rotates with the slip ring disk 11. Specifically, the optical transmitter 10 is used to generate a corresponding optical signal based on the target data in the data system 40 during the rotation with the slip ring disk 11, and outputs the generated optical signal to the beam splitter 21 that rotates with the slip ring disk 11. The beam splitter 21 then decomposes the optical signal and transmits it to the two side optical fibers 22.

[0056] Specifically, in the above-described slip ring system, a groove 13 for annular arrangement is provided on the outer curved surface of the slip ring disk 11. The groove 13 extends circumferentially along the slip ring disk 11, and a clearance groove 14 communicates with the groove 13 to facilitate the extension of the side-light optical fiber 22 from the clearance groove 14 into the groove 13. The opening of the groove 13 faces the stator 200. The side-light optical fiber 22 is placed in the groove 13. At this time, the part of the side-light optical fiber 22 located within the groove 13 is the non-light-emitting area, and the part of the side-light optical fiber 22 exposed outside the groove 13 is the light-emitting area. The cross-sectional shape of the groove 13 matches the cross-sectional shape of the side-light optical fiber 22.

[0057] The cross-section of the aforementioned side-light fiber 22 can be circular, and the cross-section of the corresponding groove 13 is designed as an arc, with the radius of curvature of the inner wall of the groove 13 being equal to the radius of the side-light fiber 22, so that when the side-light fiber 22 is placed in the groove 13, it can fit snugly against the inner wall of the groove 13. Alternatively, there can be a small gap between the side-light fiber 22 and the groove 13. The light-emitting area of ​​the aforementioned side-light fiber 22 can be adjusted by changing the depth of the groove 13. Figure 6 The depth of the side-light fiber 22 within the groove 13 is less than Figure 5 The depth of the side-light fiber 22 within the groove 13, as shown, ensures that, given the same dimensions of the side-light fiber... Figure 6 The area of ​​the light-emitting region of the side-light fiber 22 shown is relatively large.

[0058] Alternatively, the cross-section of the side-light fiber 22 can be circular, and the cross-section of the corresponding groove 13 can be designed as square. A reflective material can be filled in the gap between the sidewall of the groove 13 and the side-light fiber 22 to form a reflective layer 15. Figure 5 and Figure 6As shown. The reflective layer 15 is configured in this way to both fill the gap and act as a seal, and to reflect light. The cross-section of the side-light fiber 22 can also be square. In this case, the cross-section of the groove 13 is also designed to be square. A reflective layer 15 can be placed on the inner wall of the groove 13. This allows the light from the side-light fiber 22 near the inner wall of the groove 13 to be reflected by the reflective layer 15 into the side-light fiber 22 and then emitted from the light-emitting area, thereby improving the light intensity of the light-emitting area of ​​the side-light fiber 22. Of course, the cross-section of the side-light fiber 22 can also be a square or elliptical shape with rounded corners, etc., and is not specifically limited here.

[0059] During the rotation of the device that needs to transmit data through the slip ring system, the slip ring disk 11 in the optical transmitter 10 can rotate accordingly. At this time, the optical transmitter 10 and the beam splitter 21 can rotate together with the slip ring disk 11, while the optical receiver 30 and the stator 200 remain in a fixed state.

[0060] In this process, the light transmitter 10 receives the target data generated and sent by the data system 40 while rotating with the slip ring disk 11, generates the corresponding light signal and sends it to the beam splitter 21, which then transmits it to the side light fiber 22. At this time, the side light fiber 22 can output the light signal outward based on its all-emitting characteristic. Meanwhile, the light receiver 30 can receive the light signal output by the side light fiber 22 in a fixed state and convert the light signal into the corresponding target data through photoelectric conversion.

[0061] In order to improve the light intensity of the light-emitting area of ​​the side-light fiber 22, in addition to setting a reflective layer 15 on the inner wall of the groove 13, other surface treatments can also be performed to enhance the light intensity of the light-emitting area.

[0062] like Figure 7 As shown, this embodiment provides an optical path diagram of a side-light fiber 22 with notches 220. (As...) Figure 7 As shown, the side-light fiber 22 includes a fiber core 221 and a light-transmitting sleeve 222. The light-transmitting sleeve 222 is located outside the fiber core 221. The side-light fiber 22 has a groove 220 that penetrates the sheath material into the fiber core 221.

[0063] The aforementioned side-light fiber 22 may have one or more notches 220. The number of notches 220 on the side-light fiber 22 can be determined by the user in combination with the length of the side-light fiber 22 and the number of side-light fibers 22 in the transmission optical path.

[0064] Figure 8 and Figure 9Exemplary schematic diagrams are provided for two different scenarios where the side-light fiber 22 has multiple notches 220. When there are multiple notches 220, they are arranged along the length of the side-light fiber 22. In this way, the user can set different numbers and positions of notches 220 as needed, which helps to improve the uniformity of light intensity of the side-light fiber 22.

[0065] When the side-light fiber 22 has multiple grooves 220, each groove 220 extends circumferentially along the side-light fiber 22. Along the length of the side-light fiber 22, the multiple grooves 220 can be evenly arranged, such as... Figure 8 As shown; multiple notches 220 can also be arranged non-uniformly, such as Figure 9 As shown.

[0066] For example, such as Figure 9 As shown, along the length of the side-light fiber 22, the distance between two adjacent notches 220 increases. Thus, when the side-light fiber 22 is arranged, the end with the largest distance between two adjacent notches 220 is placed closer to the transmitting end of the optical path, and the end with the smallest distance between two adjacent notches 220 is placed closer to the far end of the optical path. This increases the light intensity near the far end of the side-light fiber 22, resulting in a more uniform light intensity in the optical path from the transmitting end to the tail end.

[0067] Typically, the side-light fiber 22 is in the shape of a long cylindrical strip. In this case, the aforementioned groove 220 extends circumferentially, including the groove 220 extending along a planar curve and also including the groove 220 extending along a spatial curve. When the side-light fiber 22 is in the shape of a long prism, the aforementioned groove 220 extends circumferentially, including the groove 220 having an angle with the axis of the length direction of the side-light fiber 22.

[0068] In addition to designing the distance between two adjacent notches 220 to increase sequentially, the depth between multiple notches 220 can also be increased sequentially along the length of the side-light fiber 22, such as... Figure 10 As shown. With the above settings, when the side-light fiber 22 is arranged, the shallowest end of the groove 220 is close to the transmitting end of the transmitting optical path, and the deepest end of the groove 220 is close to the far end of the transmitting optical path. This increases the light intensity of the side-light fiber 22 near the far end, thereby making the light intensity of the transmitting optical path more uniform from the transmitting end to the tail end.

[0069] Of course, the distance between two adjacent notches 220 can also be equal, that is, multiple notches 220 can be evenly arranged along the length of the side-light fiber 22. Figure 8 In the case shown, the depth of the multiple notches 220 is designed to increase sequentially along the length direction of the side-light fiber 22, such as... Figure 10 As shown.

[0070] The comparison diagram of the light intensity of the side-light fiber 22 with notches 220 in Embodiment 1 of this application and the side-light fiber 22 without notches 220 in related technologies, obtained through simulation, is shown below. Figure 11 As shown. Figure 11 In the diagram, the solid line represents the curve showing the light intensity of the side-light fiber 22 with notches 220 as a function of distance (i.e., the length of the side-light fiber 22) in Embodiment 1, while the dashed line represents the curve showing the light intensity of the side-light fiber 22 without notches 220 as a function of distance in related technologies. Figure 11 As can be seen from the embodiments of this application, the side-light fiber 22 with the notch 220 has a smaller difference in light intensity with distance, and the light intensity is more uniform.

[0071] Figure 12 A schematic diagram of a slip ring system including two beam-splitting elements 21 is shown in Embodiment 2. In Embodiment 2, the emitted optical path includes two beam-splitting elements 21. Figure 12 As shown, the two beam splitters 21 are radially symmetrically distributed with respect to the transmission optical path. The length of each side optical fiber 22 accounts for 1 / 4 of the total length of the transmission optical path. Thus, the transmission optical path is formed by connecting four side optical fibers 22 connected to the two beam splitters 21 in a one-to-one correspondence.

[0072] With the above settings, the length of each side optical fiber 22 is further reduced while the perimeter of the transmitting optical path remains unchanged, thereby further improving the uniformity of light intensity throughout the entire transmitting optical path.

[0073] It should be noted that when there are two beam splitters 21, the two beam splitters 21 can share one data system 40. In addition, the lengths of the four side-beam optical fibers 22 can be equal or approximately equal.

[0074] Of course, it should be noted that the number of beam splitting elements in the slip ring system can be 1, and the number of beam splitting elements 21 can also be other values, such as 2, 3, 4... Multiple beam splitting elements 21 are arranged circumferentially along the emission optical path, and no specific limitation is made here.

[0075] In Embodiment 2, the material, cross-sectional shape, and size of the side-light fiber 22 are the same as those in Embodiment 1, except that the length is different from that in Embodiment 1. Therefore, they will not be described again here.

[0076] Figure 13 A schematic cross-sectional view of the side-light fiber 22 in Embodiment 3 is shown. In Embodiment 3, the structure of the side-light fiber 22 differs from that in Embodiments 1 and 2, although the shape and area of ​​the cross-section of the side-light fiber 22 are the same in Embodiments 1 and 2. However, in Embodiment 3, the cross-sectional area of ​​the side-light fiber 22 decreases along its length.

[0077] like Figure 13As shown, the cross-sectional area of ​​the side-light fiber 22 decreases along its length. For example, the dimension of the side-light fiber 22 decreases in one direction perpendicular to its length, while the dimension remains unchanged in another direction perpendicular to its length.

[0078] With the above arrangement, when the side-light fiber 22 is arranged, the end with a larger cross-sectional area in the cross-section perpendicular to the length direction of the side-light fiber 22 is close to the transmitting end of the transmitting optical path, and the end with a smaller cross-sectional area is close to the tail end of the transmitting optical path. This increases the light intensity of the side-light fiber 22 near the far end, thereby making the light intensity of the transmitting optical path more uniform from the transmitting end to the tail end.

[0079] It should be noted that, except for the structure of the side optical fiber 22, the rotor component in Embodiment 3 is the same as that in Embodiment 1, and will not be described again here.

[0080] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A slip ring system for use in medical devices, the slip ring system comprising: The rotor (100) and stator (200) are characterized in that the slip ring system further includes: A light emitter (10) is disposed on the rotor (100) for generating light signals; A side-light optical fiber (22) is disposed on the rotor (100) for transmitting the optical signal; A beam splitter (21) is disposed on the rotor (100). The beam splitter (21) is connected to the optical transmitter (10) and is used to decompose the optical signal and transmit it to the side optical fiber (22). An optical receiver (30) is disposed on the stator (200) for receiving the optical signal.

2. The slip ring system according to claim 1, characterized in that, The number of the beam splitting element is at least one, and the beam splitting element (21) is provided with side light optical fibers (22) on both sides. The number of side light optical fibers (22) is at least twice that of the beam splitting element (21), and multiple side light optical fibers (22) are connected to form a transmission optical path.

3. The slip ring system according to claim 2, characterized in that, At least one of the beam splitting elements (21) is arranged circumferentially along the emission optical path.

4. The slip ring system according to any one of claims 1-3, characterized in that, The rotor (100) includes a slip ring disk (11), on which a groove (13) and a clearance groove (14) are provided. The transmitter (10) and the beam splitter (21) are disposed in the clearance groove (14), and the side-light fiber (22) is disposed in the groove (13).

5. The slip ring system according to claim 4, characterized in that, The groove (13) extends circumferentially along the slip ring disc body (11), and the clearance groove (14) communicates with the groove (13).

6. The slip ring system according to claim 4, characterized in that, A reflective layer (15) is provided on the inner wall of the groove (13).

7. The slip ring system according to any one of claims 1-3, 5 and 6, characterized in that, The side-light optical fiber (22) includes a fiber core (221) and a light-transmitting sleeve (222), the light-transmitting sleeve (222) being disposed outside the fiber core (221); the side-light optical fiber (22) has at least one groove (220) that penetrates the light-transmitting sleeve (222) into the fiber core (221).

8. The slip ring system according to claim 7, characterized in that, When the side-light optical fiber (22) has multiple grooves (220), the multiple grooves (220) are arranged along the length direction of the side-light optical fiber (22); Along the length direction of the side-light fiber (22), the distance between two adjacent grooves (220) increases; And / or, along the length direction of the side-light fiber (22), the depth between the plurality of the grooves (220) increases sequentially.

9. The slip ring system according to any one of claims 1-3, 5 and 6, characterized in that, The cross-sectional area of ​​the side-light fiber (22) decreases in the section perpendicular to the length direction of the side-light fiber (22).

10. A medical device, characterized in that, include: The slip ring system as described in any one of claims 1-9.

Images