Detachable NMR coil skeleton with wire passage

Abstract

The utility model relates to nuclear magnetic resonance device technical field, concretely is a kind of detachable nuclear magnetic resonance coil framework with wire passing channel, including base, the upper surface middle part of base is equipped with the coil mounting groove for accommodating coil module, the side wall of coil mounting groove is equipped with arc threading groove, the upper surface edge of base is equipped with annular groove, the upper surface of upper cover plate is detachably connected with annular groove in annular groove by locking screw, the lower surface of upper cover plate is equipped with the annular boss matched with annular groove, the position of upper cover plate corresponding arc threading groove is equipped with arc accommodation slot, the arc accommodation slot and arc threading groove are vertically aligned and spliced and form continuous cable threading channel. This detachable nuclear magnetic resonance coil framework with wire passing channel structure is simple, and cable layout and protection are convenient, and dismounting is convenient, effectively improve the efficiency of coil maintenance and replacement.

Description

Technical Field

[0001] This utility model relates to the field of nuclear magnetic resonance device technology, specifically a detachable nuclear magnetic resonance coil frame with a wire passage. Background Technology

[0002] Magnetic resonance imaging (MRI), as an important medical imaging diagnostic technique, is widely used in clinical examinations. One of its core components is the radio frequency coil, which is used to receive magnetic resonance signals emitted by human tissue. To ensure the geometric stability and spatial positioning accuracy of the coil, the coil conductor usually needs to be fixed to a dedicated frame structure. This type of frame not only serves a supporting and shaping function, but also needs to adapt to the needs of different examination sites, possessing a certain degree of assembly flexibility and ease of maintenance.

[0003] Existing MRI coil frames are mostly integrated or semi-fixed structures, which have obvious shortcomings in actual use and maintenance: when it is necessary to replace or repair the coil, the connecting cables must be completely removed from the coil unit. These cables usually pass through the inside of the frame or are pressed and fixed by the top cover, making the disassembly process cumbersome and easy to damage the wires. Especially when replacing a part of the module, the whole thing still needs to be disassembled, which is time-consuming and laborious. At the same time, due to the lack of a dedicated cable routing channel design, the cables are prone to bending and squeezing during installation, affecting the signal transmission quality and seriously affecting the efficiency and maintenance safety of the equipment. Utility Model Content

[0004] The purpose of this invention is to provide a detachable nuclear magnetic resonance coil frame with a cable routing channel to solve the problems mentioned in the background art, such as the inconvenience of assembling and disassembling the current nuclear magnetic resonance coil frame, the lack of an effective cable routing structure leading to maintenance difficulties, and the easy damage to the wires.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a detachable nuclear magnetic resonance coil frame with a cable guide channel, comprising a base, a coil mounting groove for accommodating a coil module is provided in the middle of the upper surface of the base, an arc-shaped cable guide groove is provided through the side wall of the coil mounting groove, an annular groove is provided on the edge of the upper surface of the base, an upper cover plate is detachably connected to the annular groove by a locking screw, an annular boss that mates with the annular groove is provided on the lower surface of the upper cover plate, and an arc-shaped clearance groove is provided on the upper cover plate at the position corresponding to the arc-shaped cable guide groove. The arc-shaped clearance groove and the arc-shaped cable guide groove are aligned vertically and spliced ​​together to form a continuous cable guide channel.

[0006] Preferably, the cross-section of the arc-shaped relief groove is arc-shaped, and its diameter is consistent with the inner diameter of the arc-shaped threading groove.

[0007] Preferably, the base is an arc-shaped plate structure, slightly wider in the middle and gradually narrower at both ends.

[0008] Preferably, the channel axis of the arc-shaped wire-threading groove is curved, with its inlet located in the middle of the side wall of the coil mounting groove and its outlet facing the side end face of the base, and the inner wall of the arc-shaped wire-threading groove is a continuously smooth arc surface.

[0009] Preferably, the annular groove is provided along the outer periphery of the upper surface of the base, and the cross-section of the annular groove is rectangular, and the shape of the annular boss matches the annular groove.

[0010] Preferably, the coil mounting groove is provided with a plurality of snap-fit ​​posts, and the top of the snap-fit ​​posts is provided with an elastic inverted buckle structure.

[0011] Compared with existing technologies, the advantages of this utility model are: the detachable nuclear magnetic resonance coil frame with cable routing channel has a simple structure, facilitates cable laying and protection, and is easy to assemble and disassemble, effectively improving the efficiency of coil maintenance and replacement. This structure forms a closed cable routing channel by combining an arc-shaped cable groove with an arc-shaped clearance groove on the top cover, achieving orderly cable guidance and scratch protection. The precise positioning and installation of the top cover is achieved through the cooperation of an annular groove and an annular boss. Combined with the detachable connection method of the locking screws, the top cover can be quickly disassembled without affecting the cable connection status, significantly reducing maintenance difficulty and damage risk. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a detachable nuclear magnetic resonance coil skeleton structure with a wire passage according to the present invention. Figure 2 This is a schematic diagram of the top structure of the base of a detachable nuclear magnetic resonance coil frame with a wire passage according to the present invention. Figure 3 This is a schematic diagram of the bottom structure of the upper cover plate of a detachable nuclear magnetic resonance coil skeleton with a wire passage according to the present invention.

[0013] In the diagram: 1. Base; 2. Coil mounting slot; 3. Arc-shaped wire threading slot; 4. Annular groove; 5. Locking screw; 6. Top cover plate; 7. Annular boss; 8. Arc-shaped clearance groove; 9. Snap-on post. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-3This utility model provides a technical solution: a detachable nuclear magnetic resonance coil frame with a wire passage, including a base 1. The base 1 is made of high-strength non-magnetic engineering plastic by injection molding to ensure structural strength and not affect magnetic field uniformity. The upper surface of the base 1 has a coil mounting groove 2 for accommodating the coil module in the middle. The side wall of the coil mounting groove 2 is provided with an arc-shaped wire passage groove 3. The inner cavity of the arc-shaped wire passage groove 3 is a smooth arc cavity, with one end opening into the coil mounting groove 2 and the other end penetrating to the outer end face of the base 1. The outer side of the outlet end of the arc-shaped wire passage groove 3 is provided with an annular guide chamfer to facilitate the smooth passage of the cable. The upper surface edge of the base 1 is provided with an annular groove 4. A top cover plate 6 is detachably connected to the annular groove 4 by a locking screw 5 for locking. Screws 5 are non-metallic screws, four in total, arranged at the four corners of the base 1. They cooperate with the metal threaded inserts embedded in the base 1 to securely lock the upper cover 6. The upper cover 6 is injection molded from non-magnetic engineering plastic of the same material as the base 1. The lower surface of the upper cover 6 has an annular boss 7 that mates with the annular groove 4. The upper cover 6 has an arc-shaped clearance groove 8 corresponding to the position of the arc-shaped wire passage 3. The arc-shaped clearance groove 8 and the arc-shaped wire passage 3 are aligned vertically to form a continuous cable passage channel. When it is necessary to install or maintain the coil module, the upper cover 6 can be disassembled upwards along the mating trajectory of the annular boss 7 and the annular groove 4 by loosening the locking screws 5. At this time, the arc-shaped clearance groove 8 separates from the arc-shaped wire passage 3, exposing the wire. The signal cable leading from the coil module can continue to be threaded through the arc-shaped cable guide groove 3 without being completely pulled out or disconnected. During reassembly, the upper cover plate 6 is aligned with the annular groove 4 on the base 1 and pressed down, so that the annular boss 7 is embedded in it and fixed by the locking screw 5. At this time, the arc-shaped clearance groove 8 is precisely aligned and covers the upper part of the arc-shaped cable guide groove 3. The two are joined together to form a complete and closed cable guide channel, realizing the positioning and protection of the cable. This structure ensures that the cable is always guided and supported by the smooth arc cavity of the arc-shaped cable guide groove 3 during the entire disassembly and assembly process, avoiding damage caused by repeated bending and pulling. At the same time, the detachable structure of the upper cover plate 6, together with the positioning relationship between the annular groove 4 and the annular boss 7, ensures assembly accuracy and stability. This design effectively solves the problems of cable damage, cumbersome disassembly and assembly, and low maintenance efficiency caused by the lack of dedicated cable routing channels and detachable structures in existing technologies. The arc-shaped clearance groove 8 has an arc-shaped cross-section, and its diameter is consistent with the inner diameter of the arc-shaped cable passage groove 3. When the two are joined together, they form a closed channel with a complete circular cross-section. This structure ensures that the arc-shaped clearance groove 8 and the arc-shaped cable passage groove 3 can be seamlessly joined together to form a closed channel with a complete circular cross-section after the upper cover plate 6 is installed in place. This effectively prevents the cable from shifting or being compressed during the cable threading process, improves the stability of the cable routing and the circumferential protection of the cable, and avoids wear or stress concentration caused by interface misalignment. The base 1 has an overall arc-shaped plate structure, and its outer contour is adapted to the curve of the human body. It is slightly wider in the middle and gradually narrows at both ends.This structure allows the base 1 to conform to the natural contours of the human body being examined, improving the comfort and stability of the coil frame during wear. The slightly wider center and tapering design at both ends facilitates the centralized placement of the coil module while avoiding protruding areas such as limb joints, optimizing space utilization and improving the coverage accuracy of the imaging area. The curved cable channel 3 has a curved channel axis, with its inlet located in the middle of the side wall of the coil mounting slot 2 and its outlet facing the side end face of the base 1. The inner wall of the curved cable channel 3 is a continuously smooth, rounded arc surface. This structure effectively prevents sharp-angle bends or localized compression of the cable during threading, reducing threading resistance and protecting the cable insulation from damage. Simultaneously, placing the outlet on the side end face of the base 1 facilitates lateral cable exit, keeping it away from the installation area and preventing accidental pressure or pulling during assembly, ensuring reliable signal transmission. The annular groove 4 is provided along the outer periphery of the upper surface of the base 1, and the cross-section of the annular groove 4 is... The rectangular, annular boss 7 is matched with the annular groove 4 in a clearance fit. This structure achieves precise alignment and stable connection between the upper cover plate 6 and the base 1 through the matching fit between the annular groove 4 and the annular boss 7. The clearance fit facilitates quick positioning during assembly, while ensuring even force on the locking screw 5, preventing deformation of the upper cover plate 6, and ensuring accurate alignment between the arc-shaped clearance groove 8 and the arc-shaped wire-passing groove 3, thus improving the overall sealing and reliability of the structure. Multiple snap-fit ​​posts 9 are provided in the coil mounting groove 2. The top of each snap-fit ​​post 9 has an elastic inverted buckle structure for interference fit with the snap-fit ​​hole at the bottom of the coil module. This structure, through the interference fit between the elastic inverted buckle at the top of the snap-fit ​​post 9 and the snap-fit ​​hole at the bottom of the coil module, achieves quick positioning and secure fixing of the coil module in the coil mounting groove 2 without the need for additional screws, facilitating disassembly and replacement, and preventing loosening due to vibration or operation, ensuring coil position accuracy and signal acquisition stability.

[0016] Working principle: When using the detachable MRI coil frame with wire passage, first, place the coil module into the slot from above the coil mounting slot 2, align the bottom locking hole with the locking post 9 and press it down. Use the elastic inverted structure at the top of the locking post 9 to achieve interference fit and fix the coil module. Then, lead the signal cable out from the coil module, let one end pass through the entrance of the arc-shaped wire passage 3, and lead it out along its U-shaped smooth inner cavity to the side end face of the base 1. Next, align the upper cover plate 6 with the base 1, so that the annular boss 7 on the lower surface of the upper cover plate 6 is embedded in the annular groove 4 on the base 1. At the same time, ensure that the arc-shaped clearance groove 8 is aligned with the arc-shaped wire passage 3. Finally, use the locking screw 5 to pass through the upper cover plate 6 and screw it into the corresponding threaded hole of the base 1 to fasten the upper cover plate 6, thus completing a series of operations.

[0017] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A detachable nuclear magnetic resonance coil frame with a wire guide channel, comprising a base (1), characterized in that: The upper surface of the base (1) is provided with a coil mounting groove (2) for accommodating the coil module. The side wall of the coil mounting groove (2) is provided with an arc-shaped wire-passing groove (3). The upper surface edge of the base (1) is provided with an annular groove (4). The annular groove (4) is detachably connected to the upper cover plate (6) by a locking screw (5). The lower surface of the upper cover plate (6) is provided with an annular boss (7) that cooperates with the annular groove (4). The upper cover plate (6) is provided with an arc-shaped clearance groove (8) at the position corresponding to the arc-shaped wire-passing groove (3). The arc-shaped clearance groove (8) and the arc-shaped wire-passing groove (3) are aligned vertically and spliced ​​to form a continuous cable-passing channel.

2. The detachable nuclear magnetic resonance coil frame with wire passage according to claim 1, characterized in that: The cross-section of the arc-shaped relief groove (8) is arc-shaped, and its diameter is consistent with the inner diameter of the arc-shaped threading groove (3).

3. The detachable nuclear magnetic resonance coil frame with wire passage according to claim 1, characterized in that: The base (1) is an arc-shaped plate structure, which is slightly wider in the middle and gradually narrows at both ends.

4. The detachable nuclear magnetic resonance coil frame with wire passage according to claim 1, characterized in that: The channel axis of the arc-shaped wire-threading groove (3) is curved, its entrance is located in the middle of the side wall of the coil mounting groove (2), and its outlet faces the side end face of the base (1). The inner wall of the channel of the arc-shaped wire-threading groove (3) is a continuous and smooth arc surface.

5. A detachable nuclear magnetic resonance coil frame with a wire passage according to claim 1, characterized in that: The annular groove (4) is provided along the outer periphery of the upper surface of the base (1), and the cross section of the annular groove (4) is rectangular, and the shape of the annular boss (7) matches the annular groove (4).

6. A detachable nuclear magnetic resonance coil frame with a wire passage according to claim 1, characterized in that: The coil mounting groove (2) is provided with multiple snap-fit ​​posts (9), and the top of the snap-fit ​​post (9) is provided with an elastic buckle structure.

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