Slip ring suitable for medical dual-mode imaging system

Abstract

The utility model is applicable to the technical field of slip rings, and provides a slip ring applicable to a medical dual-mode imaging system, which comprises a rotor part and a stator part, and is characterized in that the stator part comprises an elastic sheet, a protective cover, a support, brush wires, an optical fiber baffle and a shell flange; the shell flange is fixed on the side wall of the protective cover, the support is fixed in the protective cover, the elastic piece is fixed on the support through a special jig, and the elastic piece is in a splayed shape. A row of brush wires are spot-welded at the tail end of the elastic sheet to serve as contacts for increasing the contact area between the conductive ring and the brush wires; the rotor part comprises a rotating shaft, a conducting ring, an insulating layer, an optical fiber assembly, a synchronizing wheel and an FC conversion component; and the rotating shaft is rotationally connected into the protective cover through a bearing. According to the slip ring, the problems that a common slip ring is short in service life and large in radial run-out at the rotating speed of 6000 rpm are solved, and continuous long-time normal transmission of the slip ring can be effectively guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of slip ring technology, and in particular relates to a slip ring suitable for medical dual-mode imaging systems. Background Technology

[0002] In the medical field, the accuracy of transmitting photoelectric signals and the long lifespan of slip rings are key factors in measuring slip ring quality, because they are core components in medical devices and need to achieve the accuracy and reliability of transmitting high-definition images in high-end medical equipment as well as maintenance-free and ultra-long-term use.

[0003] The lifespan of slip rings varies among different brands. Generally, slip rings can only transmit high-definition images at low speeds below 1000 rpm and cannot simultaneously perform encoding functions. High-end medical dual-mode imaging systems require rapid 360° unrestricted rotation to send and receive high-definition signals. Therefore, a slip ring needs to be installed on the rotating axis to ensure smooth and uninterrupted signal and current transmission during the imaging system's rotation. The service life of slip rings from industry competitors is generally around 20 million cycles. Lacking automatic encoding functions, an additional encoding device is required, increasing material costs and reducing reliability.

[0004] Because it is used in the medical field, inaccurate or malfunctioning image transmission can lead to misdiagnosis by doctors, resulting in medical accidents, disputes, and doctor-patient conflicts. Due to the specific requirements of medical imaging, a common design method to improve slip ring lifespan and image transmission rate is a combination of a copper ring with gold-plated contacts and a single brush. However, this method has the drawback of being unable to stably transmit 4K high-definition images in dual-mode medical systems. Utility Model Content

[0005] The purpose of this utility model embodiment is to provide a slip ring suitable for medical dual-mode imaging systems, aiming to solve the problems of poor stability and lack of coding function of existing medical slip rings.

[0006] This invention is implemented as follows: a slip ring suitable for a medical dual-mode imaging system includes a rotor part and a stator part. The stator part includes a spring, a protective cover, a bracket, brush filaments, an optical fiber baffle, and a housing flange. The housing flange is fixed to the side wall of the protective cover, the bracket is fixed inside the protective cover, and the spring is fixed to the bracket by a special fixture. The spring is V-shaped. A row of brush filaments is spot-welded to the end of the spring as a contact point to increase the contact area between the conductive ring and the brush filaments. The rotor part includes a rotating shaft, a conductive ring, an insulating layer, an optical fiber assembly, a synchronous wheel, and an FC (electrical coupling). The conversion component includes a rotating shaft rotatably connected to a protective cover via bearings. Multiple conductive rings and insulating layers are fitted onto the rotating shaft, with the conductive rings and insulating layers sequentially and spaced apart. A synchronous wheel, which is an encoding structure, is fixed to the rotating shaft. The optical fiber assembly is fixed to one end of the rotating shaft via a flange, and a connector is connected to the end of the optical fiber assembly. The FC conversion component is fixed to the other end of the rotating shaft. The optical fiber assembly is positioned and connected to the optical fiber baffle using high-strength stainless steel screws, improving tightness and transmission reliability.

[0007] In a further technical solution, the FC conversion component is made of stainless steel, and the bracket is made of high-strength alloy.

[0008] In a further technical solution, the rotating shaft is made of stainless steel and has an axially symmetrical design.

[0009] In a further technical solution, the conductive ring is made of high-hardness copper material, and the surface of the conductive ring is treated with hard gold plating. The synchronous pulley is made of high-strength alloy material that is wear-resistant and corrosion-resistant.

[0010] In a further technical solution, the spring is made of imported copper material.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This slip ring solves the problem of ultra-high-definition dual-mode imaging transmission rate in medical devices, and can improve the reliability and accuracy of medical equipment faster and more accurately.

[0013] 2. This slip ring solves the problems of low service life and large radial runout of ordinary slip rings at 6000rpm, and can effectively ensure continuous normal transmission of the slip ring for a long time.

[0014] 3. This slip ring adopts an optoelectronic integrated structure and is made of stainless steel. The structure is designed so that the optical fiber works synchronously with the rotor on the central axis and is connected to the equipment rotor through the coupling of the FC conversion component.

[0015] 4. This slip ring is designed with a high-precision synchronous wheel at the rotor end, which replaces the traditional solution of connecting the slip ring to the rotor shaft by wire. This solves the problem of the slip ring transmitting signals while also performing automatic counting and encoding functions during operation.

[0016] 5. The fiber optic cable integrates a spring sheet and brush filament with a ring structure, featuring built-in encoding function and gold-to-gold contacts. It has a high-hardness coating and operates at a wavelength of 1200-1400 Hz. This allows for high-speed 6000 rpm transmission of 4K images in environments ranging from -20℃ to +60℃, with an ultra-long working life of over 100 million revolutions. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of a slip ring suitable for a medical dual-mode imaging system provided by this utility model;

[0018] Figure 2 Provided by this utility model Figure 1 A schematic diagram of the internal structure of the protective cover.

[0019] In the attached diagram: 1. Rotating shaft; 2. Conductive ring; 3. Insulating layer; 4. Fiber optic assembly; 5. Synchronous wheel; 6. FC conversion component; 7. Spring; 8. Protective cover; 9. Bracket; 10. Brush filament; 11. Fiber optic baffle; 12. Housing flange; 13. Connector. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0022] like Figure 1 and Figure 2As shown in the figure, a slip ring suitable for a medical dual-mode imaging system is provided in one embodiment of the present invention. It includes a rotor part and a stator part. The stator part includes a spring piece 7, a protective cover 8, a bracket 9, brush filaments 10, an optical fiber baffle 11, and a housing flange 12. The housing flange 12 is fixed to the side wall of the protective cover 8, the bracket 9 is fixed inside the protective cover 8, and the spring piece 7 is fixed to the bracket 9 by a special fixture. The spring piece 7 is V-shaped. A row of brush filaments 10 is spot-welded to the end of the spring piece 7 as a contact point, increasing the contact area between the conductive ring 2 and the brush filaments 10, reducing contact resistance, and decreasing heat generation. Furthermore, a special lubrication process is added to the surface of the conductive ring 2 to further reduce wear between the conductive ring 2 and the brush filaments 10, thereby making the contact more reliable and extending the service life. The rotor part includes a rotating shaft 1, a conductive ring 2, an insulating layer 3, and an optical fiber assembly 4. The rotating shaft 1 is rotatably connected to the protective cover 8 via bearings. Multiple conductive rings 2 and insulating layers 3 are fitted onto the rotating shaft 1, with the conductive rings 2 and insulating layers 3 fixed sequentially and at intervals on the rotating shaft 1. Strict requirements are placed on the surface finish and coaxiality of the conductive rings 2 to ensure stable and reliable signal transmission during high-speed rotation. The synchronous wheel 5 is fixed to the rotating shaft 1 and serves as an encoding structure, enhancing the reliability of medical device imaging and improving medical work efficiency. The fiber optic assembly 4 is fixed to one end of the rotating shaft 1 via a flange, with a connector 13 connected to the end of the fiber optic assembly 4. The FC conversion component 6 is fixed to the other end of the rotating shaft 1. The fiber optic assembly 4 is positioned and connected to the fiber optic baffle 11 using high-strength stainless steel screws, improving tightness and transmission reliability.

[0023] In this embodiment of the invention, the slip ring is applied in the field of medical intelligent high-definition imaging and installed in a high-end medical dual-mode imaging system. The slip ring is installed at the rotation center of the medical device and mainly consists of a rotor and a stator. The rotor is connected to the rotating structure of the device via an FC conversion component 6 and rotates accordingly. The stator is connected to the fixed structure of the device via a housing flange 12. By attaching the slip ring to the 360° rotating device, power and high-definition video signals can be provided to the device through stator and rotor wires.

[0024] The slip ring is driven to rotate by the synchronous wheel 5 on the rotor. The synchronous wheel 5 has 36 teeth. Each time it rotates one tooth, the sensor on the device sends a feedback signal to control the speed and rotation position of the device. The optical fiber assembly 4 is integrated in the center of the slip ring. The rotor of the optical fiber assembly 4 is connected to the rotating shaft 1 and rotates with the rotating shaft 1. The optical fiber stator is fixed in the round hole of the optical fiber baffle 11 by screws. Both ends are connected to the medical device for reliable transmission through optocouplers.

[0025] like Figure 2As shown, in a preferred embodiment of this utility model, the FC conversion component 6 is made of stainless steel, and the optical fiber and high-definition video connector are coupled internally. The two ends are respectively connected to the slip ring rotor end and the equipment rotation end. The bracket 9 is made of high-strength alloy material, which can effectively resist impact and oxidation.

[0026] like Figure 2 As shown, in a preferred embodiment of the present invention, the rotating shaft 1 is made of stainless steel and has an axially symmetrical design to ensure the strength and dynamic balance of the rotating shaft 1 during rotation. The bearing positions at both ends of the rotating shaft 1 are machined in one step, and the installation with the bearings adopts an interference fit to ensure concentricity and runout tolerance during rotation.

[0027] like Figure 2 As shown in the preferred embodiment of this utility model, the conductive ring 2 is made of high-hardness copper material. The high hardness ensures the wear resistance of the slip ring and improves its service life. The surface of the conductive ring 2 is treated with hard gold plating. The conductive ring 2 treated with gold plating further improves the surface wear resistance, conductivity and contact performance. The synchronous wheel 5 is made of high-strength alloy material that is wear-resistant and corrosion-resistant, which effectively protects the high-precision transmission of electrical signals during gear meshing.

[0028] like Figure 2 As shown, in a preferred embodiment of this utility model, the spring 7 is made of imported copper material. Imported copper material has high strength limit, elastic limit, yield limit and fatigue limit comparable to special steel, and at the same time has high electrical conductivity, thermal conductivity, high hardness, corrosion resistance, wear resistance, good casting performance, non-magnetic and non-sparking characteristics.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A slip ring suitable for a medical dual-mode imaging system, comprising a rotor portion and a stator portion, characterized in that, The stator section includes spring clips, protective covers, brackets, brushes, fiber optic baffles, and housing flanges; The housing flange is fixed to the side wall of the protective cover, the bracket is fixed inside the protective cover, and the spring is fixed to the bracket by a special fixture. The spring is in the shape of an "eight". A row of brush filaments is spot-welded to the end of the spring sheet as a contact point to increase the contact area between the conductive ring and the brush filaments. The rotor section includes a rotating shaft, a conductive ring, an insulating layer, an optical fiber assembly, a synchronous wheel, and an FC conversion component; The rotating shaft is rotatably connected to the protective cover via bearings. Multiple conductive rings and insulating layers are sleeved on the rotating shaft, and the multiple conductive rings and multiple insulating layers are fixed on the rotating shaft in sequence at intervals. The synchronous wheel is fixed on the rotating shaft, and the synchronous wheel is an encoding functional structure; The optical fiber assembly is fixed to one end of the rotating shaft via a flange, and a connector is connected to the end of the optical fiber assembly. The FC conversion component is fixed to the other end of the rotating shaft. The optical fiber assembly is positioned and connected to the optical fiber baffle by high-strength stainless steel screws, which improves the tightness and transmission reliability.

2. The slip ring for a medical dual-mode imaging system according to claim 1, characterized in that, The FC conversion component is made of stainless steel, and the bracket is made of high-strength alloy.

3. The slip ring for a medical dual-mode imaging system according to claim 1, characterized in that, The rotating shaft is made of stainless steel and has an axially symmetrical design.

4. The slip ring for a medical dual-mode imaging system according to claim 1, characterized in that, The conductive ring is made of high-hardness copper and its surface is plated with hard gold. The synchronous pulley is made of high-strength alloy material that is wear-resistant and corrosion-resistant.

5. The slip ring for a medical dual-mode imaging system according to claim 1, characterized in that, The spring is made of imported copper material.

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