Coil interface device of nuclear magnetic resonance imaging system

Abstract

The utility model discloses a coil interface device of a nuclear magnetic resonance imaging system, which comprises a coil male joint, the coil male joint is clamped with a coil female joint, a positioning frame is arranged on the outer side of the coil female joint, and clamping structures are arranged on two sides of the positioning frame; the clamping structure comprises positioning seats, the positioning seats are arranged on the surfaces of the two sides of the positioning frame, positioning openings are formed in one sides of the positioning seats and correspond to positioning rods, the positioning rods are arranged on the two sides of the coil male connector, guide-in inclined faces are arranged on one sides of the positioning rods and abut against longitudinal wedge blocks, and the longitudinal wedge blocks are arranged on the guide-in inclined faces. The longitudinal wedge block is movably arranged in the bearing seat, and a positioning clamping groove is further formed in one side of the positioning rod. According to the device, the coil male connector can be automatically locked and fixed, the situation that the coil male connector gets loose can be prevented, the signal transmission stability is guaranteed, the coil male connector and the coil female connector can be conveniently separated, and disassembly is convenient and fast.

Description

Technical Field

[0001] This utility model belongs to the field of nuclear magnetic resonance imaging technology, specifically relating to a coil interface device for a nuclear magnetic resonance imaging system. Background Technology

[0002] Radio frequency (RF) transmitting and receiving coils are crucial components of the entire RF system and even the entire magnetic resonance imaging (MRI) system. The RF transmitting coil converts the electrical signals transmitted from the RF system into high-frequency electromagnetic fields that act on the object under test; the RF receiving coil converts the nuclear magnetic resonance (NMR) signals emitted by the object under test into electrical signals. The quality of the local coils has a significant impact on the final image quality. The RF receiving coil connects to the spectrometer via an interface.

[0003] The spectrometer for a nuclear magnetic resonance imaging system disclosed in utility model patent application CN209356660U includes: an interface; a frequency synthesis module for frequency conversion; a pulse control module connected to a computer via the interface; a radio frequency transmitting module with a control end connected to the pulse control module, a radio frequency end connected to a radio frequency power amplifier, and a bidirectional end detachably connected to the frequency synthesis module; a gradient transmitting module with a control end connected to the pulse control module and multiple transmitting ends connected to corresponding gradient power amplifiers; multiple signal receiving modules with a control end connected to the pulse control module, a radio frequency end connected to a coil module, a bidirectional end detachably connected to the frequency synthesis module, and a transmitting end connected to the receiving end of a down-conversion module; and multiple down-conversion modules with signal output ends connected to a computer via the interface. The various functional modules of this application are detachable and connectable, which facilitates assembly, testing and maintenance. It adopts a split structure with a large heat dissipation area and fast heat dissipation. However, when the above technical solution is used, it cannot automatically lock and fix the coil connector when the coil is connected to the spectrometer. During use, the coil connector is prone to loosening, which affects imaging. At the same time, it cannot quickly loosen the connector, making disassembly inconvenient. Therefore, we propose a coil interface device for nuclear magnetic resonance imaging system. Utility Model Content

[0004] The purpose of this invention is to provide a coil interface device for a nuclear magnetic resonance imaging system, in order to solve the problems mentioned in the background art, such as the inability to automatically lock and fix the coil connector when connecting the coil to the spectrometer, which easily causes the coil connector to loosen during use and affect imaging, and the inability to quickly loosen the connector, making disassembly inconvenient.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a coil interface device for a nuclear magnetic resonance imaging system, including a male coil connector, which is snapped into a female coil connector. The female coil connector is located on one side of the spectrometer, and a positioning frame is provided on the outside of the female coil connector. The positioning frame has snap-fit ​​structures on both sides for automatically fixing the male coil connector.

[0006] The snap-fit ​​structure includes a positioning seat, which is disposed on both sides of the positioning frame. A positioning port is provided on one side of the positioning seat, and the positioning port corresponds to the positioning rod. The positioning rod is disposed on both sides of the coil male connector. An inlet inclined surface is provided on one side of the positioning rod, and the inlet inclined surface abuts against a longitudinal wedge. The longitudinal wedge is movably disposed in a bearing seat. The bearing seat is disposed on one side of the positioning seat, and a positioning slot is also provided on one side of the positioning rod.

[0007] The top of the positioning frame is also provided with a disassembly structure for controlling the synchronous lifting of the longitudinal wedge blocks.

[0008] Preferably, a reset spring is provided on one side of the bearing seat. One end of the reset spring is connected to the longitudinal wedge. The spring force can drive the longitudinal wedge to reset and move, and automatically engage the longitudinal wedge into the positioning slot.

[0009] Preferably, the cross-section of the positioning slot has the same shape as the bottom cross-section of the longitudinal wedge, which can improve the stability of the longitudinal wedge positioning.

[0010] Preferably, the disassembly structure includes a crossbeam, which is mounted on a positioning frame between two sets of bearing seats. A drive rod is movably mounted in the middle of the crossbeam, and a central wedge is mounted at the bottom of the drive rod. The central wedge can synchronously drive the two sets of lifting components to move synchronously. The lifting components are symmetrically arranged on both sides inside the crossbeam. Through the setting of the drive rod, the two sets of lifting components can be synchronously driven to move in opposite directions.

[0011] Preferably, the lifting assembly includes a crossbar, which is movably disposed on one side of the positioning frame. One end of the crossbar is provided with a driven wedge block that abuts against the central wedge block, which can drive the crossbar to move laterally.

[0012] Preferably, a first upper wedge is provided at the other end of the crossbar, the first upper wedge abuts against a second upper wedge, and the second upper wedge is provided on one side surface of the longitudinal wedge, which can drive the longitudinal wedge to rise.

[0013] Preferably, one end of the drive rod is also provided with a push-button buckle to facilitate pressing the drive rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) When the male coil connector and the female coil connector are connected, this application can automatically lock and fix the male coil connector, which can prevent the male coil connector from coming loose during use and ensure the stability of signal transmission.

[0016] (2) This application can quickly loosen the male coil connector, making it easy to separate the male coil connector from the female coil connector. It is convenient to disassemble and easy for medical staff to operate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the coil female connector in this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the male coil connector in this utility model;

[0020] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0021] Figure 5 This is a half-sectional view of the snap-fit ​​structure in this utility model;

[0022] Figure 6 for Figure 5 Enlarged structural diagram at point B;

[0023] Figure 7 for Figure 5 Enlarged structural diagram at point C;

[0024] Figure 8 This is a schematic diagram of the longitudinal wedge block in this utility model;

[0025] Figure 9 This is a right-side cross-sectional view of the disassembly structure in this utility model;

[0026] Figure 10 for Figure 9 Enlarged structural diagram at point D;

[0027] Figure 11 for Figure 9 Enlarged structural diagram at point E;

[0028] In the diagram: 1. Coil male connector; 2. Coil female connector; 3. Spectrometer; 4. Positioning frame; 5. Snap-fit ​​structure; 6. Disassembly structure; 51. Positioning rod; 52. Positioning slot; 53. Guide slope; 54. Positioning port; 55. Positioning seat; 56. Bearing seat; 57. Longitudinal wedge; 58. Return spring; 61. Crossbar; 62. Drive rod; 63. Center wedge; 64. Driven wedge; 65. Crossbar; 66. First upper wedge; 67. Second upper wedge. Detailed Implementation

[0029] 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.

[0030] Please see Figures 1-8 The present invention provides a technical solution: a coil interface device for a nuclear magnetic resonance imaging system, including a male coil connector 1, which is snapped into a female coil connector 2. The female coil connector 2 is located on one side of the spectrometer 3, and a positioning frame 4 is provided on the outside of the female coil connector 2. Snap-fit ​​structures 5 are provided on both sides of the positioning frame 4.

[0031] The snap-fit ​​structure 5 includes a positioning seat 55, which is disposed on both sides of the positioning frame 4. A positioning port 54 is provided on one side of the positioning seat 55, which corresponds to the positioning rod 51. The positioning rod 51 is disposed on both sides of the coil male connector 1. An inlet inclined surface 53 is provided on one side of the positioning rod 51, which abuts against the longitudinal wedge 57. During the insertion of the positioning rod 51, the longitudinal wedge 57 can be automatically lifted and moved. The longitudinal wedge 57 is movably disposed in the bearing seat 56, which is disposed on one side of the positioning seat 55. A positioning slot 52 is also provided on one side of the positioning rod 51. A return spring 58 is provided on one side of the bearing seat 56. One end of the return spring 58 is connected to the longitudinal wedge 57. Through the elastic force of the return spring 58, the longitudinal wedge 57 can be driven to return and move, and the longitudinal wedge 57 is automatically snapped into the positioning slot 52.

[0032] When connecting the coil to the spectrometer 3, align the male coil connector 1 with the female coil connector 2, and insert the positioning rod 51 on the male coil connector 1 into the positioning port 54. When the male coil connector 1 and the female coil connector 2 are connected, the positioning rod 51 drives the guide slope 53 to move. When the guide slope 53 is in contact with the longitudinal wedge 57, it can drive the longitudinal wedge 57 to move longitudinally within the bearing seat 56. The longitudinal wedge 57 compresses the return spring 58. When the longitudinal wedge 57 moves to the positioning slot 52, the return spring 58 drives the longitudinal wedge 57 to return to its original position and causes the end of the longitudinal slider to be engaged in the positioning slot 52. The positioning rod 51 is then engaged and fixed in the positioning port 54, and the male coil connector 1 is locked and fixed on the female coil connector 2 to prevent the male coil connector 1 from coming loose.

[0033] Furthermore, the cross-section of the positioning slot 52 is the same as the bottom cross-section of the longitudinal wedge 57. When the end of the longitudinal wedge 57 is inserted into the positioning slot 52, the positioning rod 51 is then engaged and fixed, which can improve the stability of the positioning of the longitudinal wedge 57.

[0034] Please see Figures 9-11 The top of the positioning frame 4 is also provided with a disassembly structure 6. The disassembly structure 6 includes a crossbeam 61, which is set on the positioning frame 4 between the two sets of bearing seats 56. A drive rod 62 is movably set in the middle of the crossbeam 61, and a central wedge 63 is set at the bottom of the drive rod 62. The central wedge 63 can synchronously drive the two sets of lifting components to move synchronously. The lifting components are symmetrically arranged on both sides inside the crossbeam 61. Through the setting of the drive rod 62, the two sets of lifting components can be synchronously driven to move in opposite directions. The lifting components include a crossbar 65, which is movably set on one side inside the positioning frame 4. One end of the crossbar 65 is provided with a driven wedge 64 that abuts against the central wedge 63, which can drive the crossbar 65 to move laterally. The other end of the crossbar 65 is provided with a first upper wedge 66, which abuts against a second upper wedge 67. The second upper wedge 67 is set on one side surface of the longitudinal wedge 57, which can drive the longitudinal wedge 57 to lift.

[0035] When disassembling the male coil connector 1 and the female coil connector 2, press the drive rod 62. The drive rod 62 drives the central wedge block 63 to move downward. When the central wedge block 63 and the two sets of driven wedge blocks 64 move, the driven wedge blocks 64 drive the crossbar 65 to move in opposite directions. The movement of the crossbar 65 drives the first upper wedge block 66 to move. When the first upper wedge block 66 and the second upper wedge block 67 move, the second upper wedge block 67 drives the longitudinal wedge block 57 to rise and separate the longitudinal wedge block 57 from the positioning slot 52, thus separating the male coil connector 1 and the female coil connector 2. The disassembly operation is convenient.

[0036] Furthermore, a push-button is provided at one end of the drive rod 62. Specifically, the push-button has a disc structure to facilitate pressing the drive rod 62.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coil interface device for a magnetic resonance imaging system, characterized by: The utility model provides a coil male joint (1) is connected with coil female joint (2), coil female joint (2) is arranged on one side of spectrometer (3), positioning frame (4) is arranged outside coil female joint (2), and clamping structure (5) for automatically fixing coil male joint (1) is arranged on both sides of positioning frame (4). The clamping structure (5) includes a positioning seat (55) arranged on both sides of the positioning frame (4), a positioning opening (54) arranged on one side of the positioning seat (55), a positioning rod (51) corresponding to the positioning opening (54), the positioning rod (51) arranged on both sides of the coil male joint (1), an inclined surface (53) arranged on one side of the positioning rod (51), a longitudinal wedge block (57) abutting against the inclined surface (53), the longitudinal wedge block (57) movably arranged in a bearing seat (56), the bearing seat (56) arranged on one side of the positioning seat (55), and a positioning slot (52) arranged on one side of the positioning rod (51). The positioning frame (4) further comprises a dismounting structure (6) arranged on the top of the positioning frame (4) and used for controlling the synchronous lifting of the longitudinal wedge block (57).

2. The coil interface device of a magnetic resonance imaging system of claim 1, characterized in that: The bearing seat (56) is provided with a reset spring (58) on one side.

3. The coil interface device of the magnetic resonance imaging system of claim 1, wherein: The cross section of the positioning slot (52) is the same as the bottom cross section of the longitudinal wedge block (57).

4. The coil interface apparatus of a magnetic resonance imaging system of claim 1, wherein: The dismounting structure (6) comprises a cross frame (61) arranged on the positioning frame (4) between two bearing seats (56), a driving rod (62) movably arranged in the middle of the cross frame (61), a center wedge block (63) arranged at the bottom of the driving rod (62), the center wedge block (63) can synchronously drive two lifting assemblies to move synchronously, and the lifting assemblies are symmetrically arranged on both sides of the cross frame (61).

5. The coil interface apparatus of a magnetic resonance imaging system of claim 4, wherein: The lifting assembly comprises a cross rod (65) movably arranged on one side of the positioning frame (4), and a driven wedge block (64) arranged at one end of the cross rod (65) and abutting against the center wedge block (63).

6. The coil interface device of the magnetic resonance imaging system of claim 5, wherein: The cross rod (65) is provided with a first upper wedge block (66) at the other end, the first upper wedge block (66) abuts against a second upper wedge block (67), and the second upper wedge block (67) is arranged on one side of the longitudinal wedge block (57).

7. The coil interface apparatus of a magnetic resonance imaging system of claim 4, wherein: The driving rod (62) is further provided with a pressing buckle at one end.

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