Radio frequency coil arrangement

Abstract

The present application relates to a kind of radio frequency coil devices, comprising: first coil;Second coil, second coil, the first coil can be detachably mounted in the second coil, the first coil is surrounded with the second coil and is set to accommodate space;And lifting structure, setting in the second coil, the lifting structure can be contacted with the first coil, and the first coil is lifted or lowered, to adjust the size of the accommodating space.By lifting structure and the first coil are lifted to adjust the size of accommodating space, the continuous adjustment of the size of accommodating space is realized, so that the size of accommodating space can meet the use demand of different age patients, increase the use range.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a radio frequency coil device. Background Technology

[0002] Current magnetic resonance imaging (MR) systems (also known as MRT) typically include multiple different radio frequency (RF) coils, such as receiving and transmitting coils, or transceiver coils. The transmitting coil transmits RF pulses to the object being examined, which are located in the main magnetic field. These pulses excite the nuclear spins within the object. The receiving coil (also called the receiving antenna) receives the magnetic resonance signal from the object, tuned to the magnetic resonance frequency. During imaging scans, the MR system must maintain a fixed position to ensure the accuracy of the imaging results.

[0003] Especially for head MRI systems, which typically consist of upper and lower sections that can move relative to each other to enable MRI operation, most head coils have a fixed, non-adjustable space in their housing. Some head coils use internal padding to adjust the space, but this padding can only be adjusted to a limited extent or between two sizes. Consequently, the head coil cannot adapt to different patient head sizes, cannot accurately conform to the patient's head, and affects image quality. Summary of the Invention

[0004] Therefore, it is necessary to provide a radio frequency coil device for adjusting the current fixed and unadjustable accommodating space, in order to address the problem that the accommodating space is currently fixed.

[0005] A radio frequency coil device, comprising:

[0006] First coil;

[0007] A second coil, wherein the first coil is detachably mounted to the second coil, and the first coil and the second coil enclose a receiving space; and

[0008] A lifting structure is disposed on the second coil. The lifting structure can contact the first coil and drive the first coil to rise or fall, so as to adjust the size of the accommodating space.

[0009] In one embodiment, the lifting structure includes two lifting platforms and a transmission assembly connected to the two lifting platforms. The transmission assembly is disposed in the second coil, and the two lifting platforms are disposed in the second coil. The transmission assembly is capable of driving the two lifting platforms to extend out of the second coil.

[0010] In one embodiment, the lifting structure includes two lifting platforms and two transmission components connected to the lifting platforms respectively. The transmission components are disposed in the second coil, and the two lifting platforms are disposed in the second coil and can extend out of the second coil. The transmission components can drive the corresponding lifting platform to extend out of the second coil.

[0011] In one embodiment, the transmission assembly includes one or more combinations of gear transmission, belt transmission, chain transmission, elevator rope transmission, lifting rod, and lead screw and nut transmission.

[0012] In one embodiment, the surface of the first coil facing the second coil has a positioning groove for mounting the top of the lifting platform.

[0013] In one embodiment, the lifting platform includes a connecting housing and a positioning platform disposed above the connecting housing. The positioning platform and the connecting housing are arranged in a stepped manner. The connecting housing is used to connect the transmission assembly, and the positioning platform is used to adapt to the positioning groove.

[0014] In one embodiment, the radio frequency coil device includes a locking member movably disposed on the first coil and connected through the first coil to the second coil for locking the first coil to the second coil.

[0015] In one embodiment, the second coil has a locking groove, and the locking member includes a locking button and a locking buckle disposed on the locking button. The locking buckle is movably disposed in the first coil, and the other end of the locking buckle protrudes from the surface of the first coil facing the second coil. The locking buckle can be locked or unlocked in the locking groove by pressing the locking button.

[0016] In one embodiment, the locking release includes a first locking arm, a second locking arm, and a hook portion disposed at the end of the second locking arm. The first locking arm is connected to the second locking arm, and the connection point between the two is rotatably disposed in the first coil. The end of the first locking arm away from the second locking arm is connected to the locking button.

[0017] In one embodiment, the lifting structure further includes an adjustment knob located on the second coil and connected to the transmission assembly for controlling the movement of the transmission assembly.

[0018] By adopting the above-described technical methods, the present invention has at least the following technical effects:

[0019] The radio frequency coil device of the present invention comprises a first coil and a second coil that mate to form a complete receiving space. The patient's detection object is located within this receiving space, and scanning of the patient's detection object is performed through the cooperation of the first and second coils. Furthermore, a lifting structure is disposed within the second coil and can extend out to contact the first coil. When the lifting structure moves up and down, it can synchronously move the first coil up and down, causing the first coil to move closer to or further away from the second coil. By adjusting the size of the receiving space through the lifting structure driving the first coil to move up and down, the size of the receiving space is effectively solved, addressing the current problem of fixed and unadjustable receiving spaces. This allows for continuous adjustment of the receiving space size, enabling it to meet the needs of patients of different ages and increasing its applicability. Attached Figure Description

[0020] Figure 1 This is a perspective view of a radio frequency coil device according to a first embodiment of the present invention, wherein the radio frequency coil device has lead-out connecting lines;

[0021] Figure 2 for Figure 1 A perspective view of one embodiment of the radio frequency coil device after it has been lowered;

[0022] Figure 3 for Figure 1 A perspective view of one embodiment of the radio frequency coil device after it has been raised.

[0023] Figure 4 for Figure 3 A three-dimensional view of the first coil in the radio frequency coil device shown;

[0024] Figure 5 for Figure 3 The diagram shows a perspective view of a lifting structure installed in the second coil of the radio frequency coil device, wherein the lifting structure is in an upward state.

[0025] Figure 6 for Figure 5 The diagram shows a perspective view of a lifting structure installed in the second coil, with the lifting structure in a descending state.

[0026] Figure 7 for Figure 6 A perspective view showing the installation of the lifting structure in the second coil;

[0027] Figure 8 for Figure 7 A three-dimensional view of the lifting structure in the second coil shown;

[0028] Figure 9 for Figure 8 A perspective view of the screw drive assembly with the transmission worm gear installed in the lifting structure shown.

[0029] Figure 10 for Figure 8 A three-dimensional view of the lead screw shaft in the lifting structure shown from one angle;

[0030] Figure 11 for Figure 10 The diagram shown is a three-dimensional view of the lead screw shaft from another angle.

[0031] Figure 12 The diagram shown in Figure 5 illustrates the second coil, with the connection between the transmission assembly and the lifting platform shown in cross section.

[0032] Figure 13 This is a perspective view of the radio frequency coil device in the second embodiment of the present invention;

[0033] Figure 14 for Figure 13 A perspective view of one embodiment of the radio frequency coil device shown;

[0034] Figure 15 for Figure 14 A schematic diagram showing the adjustment of the accommodating space of the radio frequency coil device;

[0035] Figure 16 for Figure 13 A perspective view of another embodiment of the radio frequency coil device shown;

[0036] Figure 17 for Figure 16 A schematic diagram showing the adjustment of the accommodating space of the radio frequency coil device;

[0037] Figure 18 for Figure 1 The schematic diagram of the radio frequency coil device is shown, with the locking element cut open.

[0038] Figure 19 for Figure 18 A partial enlarged view of the RF coil device at the locking component;

[0039] Figure 20 for Figure 18 A schematic diagram of the locking mechanism is shown.

[0040] Wherein: 100, radio frequency coil device; 110, first coil; 111, first cavity; 112, positioning groove; 120, second coil; 121, second cavity; 122, wire through hole; 130, lifting structure; 131, lifting platform; 1311, connecting housing; 1312, positioning platform; 13121, locking groove; 132, transmission assembly; 1321, gear transmission group; 13211, main gear; 13212, secondary gear; 1322, worm gear. Rod drive assembly; 13221, worm gear; 13222, worm wheel; 13223, worm gear; 1323, lead screw drive assembly; 13231, lead screw housing; 13232, lead screw shaft; 132321, threaded groove; 133, adjusting knob; 140, locking element; 141, locking button; 142, locking release; 1421, first locking arm; 1422, second locking arm; 1423, hook; 143, elastic component; A, accommodating space. Detailed Implementation

[0041] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0042] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0043] Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0047] See Figures 1 to 3 , Figures 13 to 17 This invention provides a radio frequency (RF) coil device 100. The RF coil device 100 can be a local receiving coil, a local transmitting coil, or an integrated local coil that simultaneously performs local transmitting and receiving. In this embodiment, the RF coil device 100 is used as an example of a local receiving coil component. This RF coil device 100 can receive magnetic resonance signals generated by the nuclear spin of the target object. After sending the magnetic resonance signals to a processor, the RF coil device 100 reconstructs a magnetic resonance image of the target object, allowing medical personnel to make diagnoses based on the magnetic resonance image. It is understood that the RF coil device 100 of this invention can scan target objects of different ages. It is worth noting that the target object can be the patient's head, abdomen, limbs, or other areas requiring scanning. This invention only uses the patient's head as an example of a target object; however, the target object could also be the patient's legs.

[0048] Currently, most head coils have a fixed-size intake space when scanning a patient's head, which cannot meet the needs of patients of different ages. A small number of head coils add padding to the intake space, but the padding can only be adjusted to a limited extent or changed between two sizes. Therefore, current head coils cannot continuously adjust the size of the intake space, thus failing to meet the needs of patients of different ages and having a narrow range of applications.

[0049] Therefore, the present invention provides a novel radio frequency coil device 100, which enables continuous adjustment of the size of the accommodating space A, so that the size of the accommodating space A can meet the usage needs of patients of different ages, thereby increasing its applicability. The specific structure of the radio frequency coil device 100 is described in detail below.

[0050] See Figures 1 to 3 In one embodiment, the radio frequency coil device 100 includes a first coil 110, a second coil 120, and a lifting structure 130. The first coil 110 is detachably mounted on the second coil 120, and the first coil 110 and the second coil 120 cooperate to form a receiving space A. Optionally, in this embodiment of the invention, the first coil includes a first housing and a first coil unit (not shown) disposed in the first housing, and the second coil includes a second housing and a second coil unit (not shown) disposed in the second housing. The lifting structure 130 is disposed on the second coil 120, and the lifting structure 130 can abut against the first coil 110 and drive the first coil 110 to rise or fall, thereby adjusting the size of the receiving space A. The receiving space A is a receiving space for a detection object, in which the detection object is placed, so that the radio frequency coil device 100 can transmit radio frequency pulses to the detection object in the receiving space A or receive the magnetic resonance signal of the detection object.

[0051] The first coil 110 and the second coil 120 can cooperate with each other, and the position of the first coil 110 can be changed by the lifting structure 130, thereby changing the relative distance between the first coil 110 and the second coil 120, and the size of the corresponding accommodating space A also changes accordingly. The relative distance can be 1cm-10cm, or 0.5cm-5cm, or another set range, so that the accommodating space A is large enough to accommodate scanned objects of different sizes. Optionally, when the relative distance between the first coil 110 and the second coil 120 changes, the lower edge of the first coil (first housing) and the upper edge of the second coil (second housing) overlap and can slide relative to each other, thereby keeping the relative positional relationship between the first coil unit and the second coil unit essentially unchanged in directions other than the direction of movement. Figure 2As shown, the second coil 120 is located below, and the first coil 110 is mounted above the second coil 120. The lower / inner side of the first coil 110 is bent to form a first cavity 111, and the upper side of the second coil 120 is bent or recessed to form a second cavity 121. After the first coil 110 is mounted on the second coil 120, the first cavity 111 and the second cavity 121 form a complete receiving space A, which is used to receive the organ or tissue region of the object to be detected.

[0052] Furthermore, the first coil 110 is detachably mounted on the second coil 120. In use, the first coil 110 is first removed from the second coil 120, the object to be detected is moved into the second cavity 121 of the second coil 120, and then the first coil 110 is placed on top of the second coil 120. At this point, the object to be detected is located in the receiving space A. Scanning and imaging of the object to be detected is achieved through the cooperation of the first coil 110 and the second coil 120. It is worth noting that the first coil 110 can be removed from the second coil 120 at any adjustment position, achieving separation of the two, and is not limited by the adjustment position.

[0053] The lifting structure 130 is disposed within the second coil 120. Specifically, most of the lifting structure 130 is located within the second coil 120, and the top of the lifting structure 130 can extend / expose the surface of the second coil 120 and abut / contact with the first coil 110. It is worth noting that the first coil 110 is locked to the lifting structure 130 in the second coil 120 during use. When the lifting structure 130 is driven upward by an external force, it will push the first coil 110 upward synchronously; when the lifting structure 130 is driven downward by an external force, it will follow the lifting structure 130 downward synchronously, thereby adjusting the accommodating space A.

[0054] When the top / upper part of the lifting structure 130 is flush with the top of the second coil 120, the first coil 110 directly abuts against the second coil 120, and at this time, the size of the accommodating space A is at its smallest. When it is necessary to increase the size of the accommodating space A, the lifting structure 130 gradually rises vertically, driving the second coil 120 to rise as well. At this time, the top of the lifting structure 130 protrudes beyond the top of the second coil 120, increasing the size of the accommodating space A, which can be used for testing larger patients. Moreover, the vertical movement of the lifting structure 130 is continuous, thus enabling gradual adjustment of the size of the accommodating space A, with a wide adjustment range.

[0055] The radio frequency coil device 100 of the above embodiment drives the first coil 110 to rise or fall relative to the second coil 120 through the lifting structure 130, so as to adjust the size of the accommodating space A. This effectively solves the current problem that the accommodating space A is fixed and cannot be adjusted, and realizes the continuous adjustment of the size of the accommodating space A, so that the size of the accommodating space A can meet the usage needs of patients of different ages and increase the range of use.

[0056] See Figures 1 to 3 In one embodiment, the first coil 110 includes a first housing and a coil unit disposed in the first housing, and the second coil 120 includes a second housing and a coil unit disposed in the second housing. The first housing has a first space, and the second housing has a second space. The first space and the second space are joined together to form a receiving space A.

[0057] Specifically, the first coil 110 includes a first housing and a receiving coil unit disposed inside or on the surface of the first housing, the first housing radially surrounding to form a first cavity 111. The second coil 120 includes a second housing and a receiving coil unit disposed within the second housing, the lower surface of the second housing being partially or entirely curved to form a second cavity 121.

[0058] The second housing is located below, and the first housing is mounted on the second housing. The first cavity 111 and the second cavity 121 mate to form a complete receiving space A for the object to be detected to enter. It should be noted that a transmitting coil unit may also be provided on the first housing and the second housing. For example, the receiving coil unit is located on the side of the first housing and the second housing adjacent to the receiving space A, and the transmitting coil unit is located on the side of the first housing and the second housing away from the receiving space A.

[0059] See Figures 5 to 12 In the first embodiment of the present invention, the lifting structure 130 includes two lifting platforms 131 and a transmission assembly 132 connected to the two lifting platforms 131. The transmission assembly 132 is disposed in the second coil 120. The two lifting platforms 131 are vertically disposed on the second coil 120 and can extend at least partially out of the second coil 120. The transmission assembly 132 can drive the two lifting platforms 131 to extend at least partially out of the second coil 120 and drive the first coil 110 to rise or fall. That is, the synchronous lifting drive of the two lifting platforms 131 is achieved through a single transmission assembly 132.

[0060] Two lifting platforms 131 are symmetrically arranged in the second housing of the second coil 120, and the two lifting platforms 131 can extend or retract at least partially relative to the second housing. A mounting hole for mounting the lifting platforms 131 is provided at the top of the second housing, allowing the lifting platforms 131 to move up and down. Thus, the lifting platforms 131 can extend or retract into the second housing through the mounting hole. A transmission assembly 132 is disposed in the second housing and simultaneously connects to the two lifting platforms 131. The transmission assembly 132 is movably disposed in the second housing, and when the transmission assembly 132 moves, it can output lifting motion and drive the two lifting platforms 131 to move synchronously.

[0061] Specifically, when the transmission assembly 132 outputs upward movement in the second housing, it can drive the lifting platform 131 to extend out of the mounting hole and abut / bump against the first housing of the first coil 110. As the transmission assembly 132 continues to drive the lifting platform 131 upward, the lifting platform 131 can synchronously drive the first housing upward, thereby adjusting the position of the first coil 110 relative to the second coil 120 and increasing the size of the accommodating space A. Thus, the increased accommodating space A can be used for scanning imaging of larger objects.

[0062] When the transmission assembly 132 outputs a downward movement within the second housing, it drives the lifting platform 131 to gradually retract into the mounting hole. Simultaneously, the lifting platform 131 drives the first housing to descend, thereby adjusting the position of the first coil 110 relative to the second coil 120 and reducing the size of the accommodating space A. This reduced size of the accommodating space A makes it suitable for scanning and imaging smaller objects. Furthermore, when the transmission assembly 132 drives the lifting platform 131 fully into the mounting hole, the first housing and second housing abut against each other, and the size of the accommodating space A is at its minimum, making adjustment impossible.

[0063] Furthermore, when the transmission component 132 drives the lifting platform 131 to rise and fall, the lifting platform 131 can drive the first housing to gradually rise or fall, thereby gradually adjusting the size of the accommodating space A, increasing the application range of the radio frequency coil device 100, so that the accommodating space A of the radio frequency coil device 100 can meet the imaging requirements of any size detection object. When in use, the size of the accommodating space A can be adjusted according to the actual size of the detection object, ensuring that the upper and lower surfaces of the radio frequency coil device 100 are close to the detection object, thereby making the receiving coil unit of the radio frequency coil device 100 have high sensitivity, and the final magnetic resonance image also has a high signal-to-noise ratio.

[0064] See Figures 13 to 17In the second embodiment of the present invention, the lifting structure 130 includes two lifting platforms 131 and two transmission components 132 respectively connected to the lifting platforms 131. The transmission components 132 are disposed in the second coil 120. The two lifting platforms 131 are respectively disposed in the second coil 120 and can extend partially or completely out of the second coil 120. The transmission components 132 can drive the corresponding lifting platform 131 to extend out of the second coil 120 and drive the first coil 110 at the corresponding position to rise and fall. That is, each lifting platform 131 corresponds to one transmission component 132, and the transmission component 132 drives the corresponding lifting platform 131 to rise and fall, thereby realizing the adjustment of the size of the accommodating space A.

[0065] It is worth noting that the lifting process of the lifting platform 131 controlled by the transmission component 132 in this embodiment is essentially the same as that of the lifting platform 131 controlled by the transmission component 132 in the first embodiment. The only difference is that in this embodiment, one transmission component 132 controls the movement of one lifting platform 131, while in the first embodiment, one transmission component 132 controls the synchronous movement of two lifting platforms 131. These differences will not be elaborated upon here.

[0066] like Figure 7 , Figure 14 and Figure 16 As shown, the left-side transmission assembly 132 is connected to a lifting platform 131, and the right-side transmission assembly 132 is also connected to a lifting platform 131. The two transmission assemblies 132 can move synchronously and output the same lifting distance; in this case, the first coil 110 is parallel to the second coil 120. Of course, the two transmission assemblies 132 can also output different lifting distances; in this case, the first coil 110 is tilted relative to the second coil 120. For example, in… Figure 15 In the middle, the lifting distance output by the transmission component 132 on the left is small, while the lifting distance output by the transmission component 132 on the right is large, causing the first coil 110 to tilt to the left.

[0067] See Figures 5 to 17 In one embodiment, the transmission assembly 132 includes one or more combinations of gear transmission group, belt transmission group, chain transmission group, elevator rope transmission group, lifting rod, and lead screw and nut transmission group. It is understood that the form of the transmission assembly 132 is not limited in principle, as long as it can achieve the output lifting motion. In this invention, the transmission assembly 132 is described as a combination of gear transmission group 1321 and lead screw and nut transmission group; other implementations are essentially the same as described above and will not be elaborated upon here.

[0068] See Figures 5 to 12In the first embodiment, one transmission assembly 132 corresponds to two lifting platforms 131. The transmission assembly 132 includes a gear transmission group 1321, two worm gear transmission groups 1322, and at least two lead screw transmission groups 1323. The gear transmission group 1321 is connected to the two worm gear transmission groups 1322 respectively. Each worm gear transmission group 1322 is connected to at least one lead screw transmission group 1323, and the at least one lead screw transmission group 1323 is connected to the lifting platform 131. Thus, when the gear transmission group 1321 outputs motion, it can drive the two worm gear transmission groups 1322 to move. Furthermore, the worm gear transmission groups 1322 can drive the corresponding lead screw transmission groups 1323 to move, causing the lead screw transmission groups 1323 to output lifting motion, which in turn drives the lifting platform 131 to perform lifting motion.

[0069] Optionally, the gear transmission assembly 1321 includes a two-stage gear transmission, specifically including a main gear 13211, two primary gears meshing with the main gear 13211, and secondary gears 13212 meshing with the two primary gears. The two secondary gears 13212 mesh with a worm gear transmission assembly. It can be understood that the primary gears and secondary gears 13212 are connected via gear shafts, achieving synchronous rotation between them. When the main gear 13211 rotates, it drives the two primary gears meshing with it to rotate. The two primary gears drive the gear shaft to rotate, which in turn drives the secondary gears 13212 to rotate. Thus, the secondary gears 13212 drive the worm gear transmission assembly 1322 meshing with them to rotate, thereby achieving the motion output of the gear transmission assembly 1321. In this way, in actual use, medical staff can control the rotation of the main gear 13211 to realize the motion output of the gear transmission group 1321, and then adjust the position of the first coil 110 through the motion of the worm gear transmission group 1322 and the lead screw transmission group 1323, so as to adjust the size of the accommodating space A.

[0070] Optionally, the radial dimension of the main gear 13211 is larger than that of the first-stage gear, and the radial dimension of the first-stage gear is smaller than that of the second-stage gear 13212. This achieves the purpose of saving effort and makes it easier for medical staff to adjust the size of the accommodating space A.

[0071] Optionally, the worm gear transmission assembly 1322 includes a transmission worm 13221, a worm gear 13223 disposed at the end of the transmission worm 13221, and a transmission worm wheel 13222 meshing with the transmission worm 13221. The transmission worm 13221 is rotatably disposed in the second housing. The worm gear 13223 is disposed at one end of the transmission worm 13221 and meshes with the secondary gear 13212 of the gear transmission assembly 1321. The transmission worm wheel 13222 is disposed on the lead screw transmission assembly 1323. When the secondary gear 13212 rotates, it can drive the meshing worm gear 13223 to rotate, thereby driving the transmission worm 13221 to rotate synchronously. When the worm gear 13221 rotates, it drives the meshing worm wheel 13222 to rotate, which in turn drives the screw drive assembly 1323 to rotate, thus realizing the output of motion of the worm drive assembly 1322. In practical use, medical personnel can control the rotation of the main gear 13211, which transmits the motion to the worm gear 13223 of the worm drive assembly 1322 via the secondary gear 13212 of the gear drive assembly 1321, thereby achieving the output of motion of the worm drive assembly 1322 and adjusting the size of the accommodating space A.

[0072] Optionally, the radial dimension of the worm gear 13223 is smaller than the radial dimension of the secondary gear 1321, which achieves the purpose of saving effort and is convenient to use. Optionally, the worm teeth on the transmission worm 13221 can be set to correspond to the transmission worm wheel 13222, or they can be arranged all over the transmission worm 13221 along the length direction.

[0073] Optionally, the lead screw drive assembly 1323 includes a lead screw housing 13231 and a lead screw shaft 13232 disposed within the lead screw housing 13231. A threaded guide sleeve is disposed within the lead screw housing 13231, and a threaded groove 132321 is formed on the outer wall of the lead screw shaft 13232, with the threaded guide sleeve engaging with the threaded groove 132321. A transmission worm gear 13222 is mounted on the outer wall of the lead screw housing 13231, and a lifting platform 131 is mounted on the top of the lead screw shaft 13232. When the transmission worm gear 13222 rotates, it drives the lead screw housing 13231 and the threaded guide sleeve to rotate synchronously. The engagement of the threaded guide sleeve with the threaded groove 132321 allows the lead screw shaft 13232 to extend or retract axially, thereby controlling the lifting motion of the lifting platform 131.

[0074] In this embodiment, when the lifting platform 131 moves up and down, the main gear 13211 is controlled to rotate, which in turn drives the two primary gears meshing with it to rotate. The two primary gears drive the gear shaft to rotate, which in turn drives the secondary gear 13212 to rotate. When the secondary gear 13212 rotates, it drives the worm gear 13223 meshing with it to rotate, which in turn drives the transmission worm 13221 to rotate synchronously. When the transmission worm 13221 rotates, it drives the transmission worm wheel 13222 meshing with it to rotate. When the transmission worm wheel 13222 rotates, it drives the lead screw housing 13231 and the threaded guide sleeve to rotate synchronously. Through the cooperation between the threaded guide sleeve and the threaded groove 132321, the lead screw shaft 13232 can extend or retract axially, thereby realizing the control of the lifting movement of the lifting platform 131 and achieving the purpose of lifting control of the lifting platform 131. It is worth noting that the upward and downward movement direction of the lifting platform 131 is controlled by the rotation direction of the main gear 13211. When the main gear 13211 rotates in one direction, it is assumed that the lifting platform 131 is controlled to rise; correspondingly, the main gear 13211 can be controlled to descend by rotating in the opposite direction.

[0075] Optionally, each worm gear drive assembly 1322 corresponds to two lead screw drive assemblies 1323. The two worm gear drive assemblies 1322 are spaced apart along the axial direction of the lead screw drive assembly 1323 and are simultaneously connected to the lifting platform 131 to ensure smooth lifting and lowering of the lifting platform 131 and avoid skewness. Of course, in other embodiments of the present invention, each worm gear drive assembly 1322 corresponds to multiple lead screw drive assemblies 1323.

[0076] See Figures 13 to 17 In the second embodiment, each transmission assembly 132 corresponds to a lifting platform 131. In this case, the transmission assembly 132 includes a worm gear transmission group 1322 and at least one set of lead screw transmission groups 1323. The worm gear transmission group 1322 is connected to the at least one lead screw transmission group 1323, and the at least one lead screw transmission group 1323 is connected to the corresponding lifting platform 131. Thus, when the worm gear transmission group 1322 moves, it can drive the corresponding lead screw transmission group 1323 to move, causing the lead screw transmission group 1323 to output lifting motion, which in turn drives the corresponding lifting platform 131 to perform lifting motion.

[0077] Optionally, the worm gear transmission assembly 1322 includes a transmission worm 13221 and a worm gear 13223 disposed at the end of the transmission worm 13221. The transmission worm 13221 is rotatably disposed in the second housing, and the transmission worm gear 13222 is disposed on the lead screw transmission assembly 1323. When the transmission worm 13221 rotates, it drives the meshing transmission worm gear 13222 to rotate, which in turn drives the lead screw transmission assembly 1323 to rotate, thus realizing the output motion of the worm gear transmission assembly 1322. In practical use, medical personnel can control the rotation of the transmission worm 13221, and through the meshing of the transmission worm 13221 and the transmission worm gear 13222, the output motion of the worm gear transmission assembly 1322 is realized, achieving the purpose of adjusting the size of the accommodating space A.

[0078] Furthermore, while the worm gear 13221 can drive the worm wheel 13222 to rotate, the worm wheel 13222 cannot drive the worm gear 13221 to rotate. This means the transmission motion of the worm gear transmission assembly 1322 is irreversible. This allows the worm gear transmission assembly 1322 to stop at any time, enabling the lifting platform to stop braking at any time based on the transmitted force. Moreover, the lifting platform will not be driven by external forces, thus achieving the immediate stopping function of the lifting platform.

[0079] Optionally, each worm gear drive assembly 1322 corresponds to two lead screw drive assemblies 1323. The two worm gear drive assemblies 1322 are spaced apart along the axial direction of the worm gear drive assembly 1322 and are simultaneously connected to the lifting platform 131 to ensure smooth lifting and lowering movement of the lifting platform 131 and avoid skewness. Of course, in other embodiments of the present invention, each worm gear drive assembly 1322 corresponds to multiple lead screw drive assemblies 1323. Optionally, the worm teeth on the transmission worm 13221 can be arranged corresponding to the transmission worm wheel 13222, or they can be arranged all over the transmission worm 13221 along its length. Optionally, a longer transmission worm 13221 can also be truncated, for example, two half-sections of the transmission worm 13221 can be arranged on one side.

[0080] Optionally, the lead screw drive assembly 1323 includes a lead screw housing 13231 and a lead screw shaft 13232 disposed within the lead screw housing 13231. A threaded guide sleeve is disposed within the lead screw housing 13231, and a threaded groove 132321 is formed on the outer wall of the lead screw shaft 13232, with the threaded guide sleeve engaging with the threaded groove 132321. A transmission worm gear 13222 is mounted on the outer wall of the lead screw housing 13231, and a lifting platform 131 is mounted on the top of the lead screw shaft 13232. When the transmission worm gear 13222 rotates, it drives the lead screw housing 13231 and the threaded guide sleeve to rotate synchronously. The engagement of the threaded guide sleeve with the threaded groove 132321 allows the lead screw shaft 13232 to extend or retract axially, thereby controlling the lifting motion of the lifting platform 131.

[0081] In this embodiment, when the lifting platform 131 moves up and down, the transmission worm gear 13221 is controlled to rotate, which in turn drives the transmission worm wheel 13222, which meshes with it, to rotate. When the transmission worm wheel 13222 rotates, it drives the lead screw housing 13231 and the threaded guide sleeve to rotate synchronously. Through the cooperation of the threaded guide sleeve and the threaded groove 132321, the lead screw shaft 13232 can extend or retract axially, thereby controlling the lifting movement of the lifting platform 131 and achieving the purpose of lifting platform 131 lifting control. It is worth noting that the direction of the lifting and lowering movement of the lifting platform 131 is controlled by the rotation direction of the main gear 13211. When the main gear 13211 rotates in one direction, it is assumed that the lifting platform 131 is lifted; correspondingly, the main gear 13211 rotates in the opposite direction to achieve the lowering control of the lifting platform 131. Furthermore, the adjustment principles of the two transmission components 132 are essentially the same, and will not be elaborated upon here.

[0082] In the second embodiment, when adjusting the size of the accommodating space A, medical personnel can simultaneously adjust the lifting distance output by the two transmission components 132 to make the first coil 110 parallel to the second coil 120, or to make the first coil 110 tilted relative to the second coil 120, as long as the accommodating space A is suitable for the patient's detection object. That is to say, the transmission component 132 of the second embodiment can achieve localized lifting of the first coil 110, which can be applied to different patients, such as patients with special needs like head bumps.

[0083] See figure Figure 5 , Figure 14 and Figure 16 In one embodiment, the lifting structure 130 further includes an adjustment knob 133, which is located in the second coil 120 and connected to the transmission assembly 132 for controlling the movement of the transmission assembly 132. The adjustment knob 133 is exposed above the second coil 120, and the transmission assembly 132 is operated by adjusting the knob 133 to facilitate the adjustment of the accommodating space A.

[0084] See Figures 1 to 12 In the first embodiment, there is one transmission assembly 132. The adjusting knob 133 is connected to the main gear 13211 via a connecting rod to drive the main gear 13211 to rotate, thereby adjusting the accommodating space A. See also... Figures 13 to 17In the second embodiment, there are two adjustment knobs 133, with each transmission component 132 corresponding to one adjustment knob 133. The adjustment knob 133 drives the corresponding transmission worm gear 13221 to rotate, thereby adjusting the accommodating space A. Of course, the number of adjustment knobs 133 can also be four. Correspondingly, the worm gear transmission group 1322 includes two transmission worm gears 13221, each transmission worm gear 13221 corresponding to a transmission worm wheel 13222 and a lead screw transmission group 1323. Each transmission worm gear 13221 extends out of the second coil 120 and is equipped with an adjustment knob 133. In this way, the accommodating space A can be adjusted on both sides of the second coil 120.

[0085] In other words, in this invention, the movement of the lifting platform 131 is driven by the transmission component 132 that outputs the lifting mechanism. When medical staff rotate the adjustment knob 133, the internal transmission component 132 can drive the lifting platform 131 to move up and down, thereby driving the first coil 110 to achieve relative movement with the second coil 120, so as to adjust the size of the accommodating space A.

[0086] See Figure 4 In one embodiment, the surface of the first coil 110 facing the second coil 120 has a positioning groove 112, which is used to mount the top of the lifting platform 131. That is, the bottom of the first housing is recessed into the interior of the second housing to form the positioning groove 112, and the shape of the positioning groove 112 matches the shape of the top of the lifting platform 131. Thus, when the lifting platform 131 abuts against the first coil 110, the top of the lifting platform 131 can extend into the positioning groove 112. The cooperation between the lifting platform 131 and the positioning groove 112 achieves the installation and positioning of the first coil 110, ensuring that the first coil 110 can be accurately installed onto the second coil 120. Furthermore, after the top of the lifting platform 131 cooperates with the positioning groove 112, when the transmission assembly 132 controls the lifting platform 131 to rise and fall, the lifting platform 131 can smoothly drive the first coil 110 to move up and down. The smooth movement of the first coil 110 facilitates the adjustment of the size of the accommodating space A.

[0087] See Figure 5 In one embodiment, the lifting platform 131 includes a connecting housing 1311 and a positioning platform 1312 disposed above the connecting housing 1311. The positioning platform 1312 and the connecting housing 1311 are arranged in a stepped manner. The connecting housing 1311 is used to connect the transmission assembly 132, and the positioning platform 1312 is used to be adapted to the positioning groove 112.

[0088] The lifting platform 131 comprises two parts: a connecting housing 1311 and a positioning platform 1312. The connecting housing 1311 is hollow, and the lead screw shaft 13232 of the lead screw drive assembly 1323 is disposed inside it. The top of the lead screw shaft 13232 is fixed to the inner wall of the connecting housing 1311. Thus, when the lead screw shaft 13232 extends out of the lead screw housing 13231, it can drive the connecting housing 1311 to rise and fall. Optionally, the lead screw shaft 13232 can be fixed to the connecting housing 1311 by means of snap-fit, adhesive, etc. Of course, in other embodiments of the present invention, the lead screw shaft 13232 can also be fixed to the connecting housing 1311 by means of adapters such as fixing seats.

[0089] The positioning platform 1312 is disposed on top of the connecting housing 1311 and is arranged in a stepped manner relative to the connecting housing 1311. The positioning platform 1312 is used to cooperate with the positioning groove 112 of the first coil 110 to achieve positioning of the lifting platform 131 and the first coil 110. It can be understood that after the positioning platform 1312 is arranged in a stepped manner relative to the connecting housing 1311, the cross-sectional area of ​​the positioning platform 1312 is smaller than the cross-sectional area of ​​the connecting housing 1311. In this way, the volume of the positioning groove 112 can be reduced, and it will not occupy too much space in the first coil 110, thus ensuring the performance of the first coil 110. Moreover, the positioning platform 1312 can also achieve automatic positioning of the first coil 110 and the lifting platform 131 without precise alignment, and can also ensure accurate locking of the locking member 140 mentioned later, ensuring the locking effect without improving the performance. Optionally, the connecting housing 1311 and the positioning platform 1312 are an integral structure.

[0090] See Figure 1 , Figure 2 , Figures 18 to 20 In one embodiment, the radio frequency coil device 100 includes a locking member 140, which is movably / movably disposed on the first coil 110 and can pass through the first coil 110 to connect to the second coil 120, for locking the first coil 110 to the second coil 120. The locking member 140 is used to fix the first coil 110. The locking member 140 can unlock or lock when it moves, and locking the first coil 110 mainly locks the first coil 110 onto the lifting platform 131. When the locking member 140 is engaged, it can extend out of the first coil 110 and connect to the lifting platform 131 of the second coil 120. That is, the locking member 140 can extend downward from the lower surface of the first coil 110 to cooperate with the lifting platform 131 on the second coil 120, ensuring that the first coil 110 is reliably fixed on the lifting platform 131, preventing the position of the first coil 110 from shifting, ensuring the accuracy of the imaging results, avoiding artifacts, and at the same time, preventing the first coil 110 from falling and injuring the patient.

[0091] See Figures 18 to 20 In one embodiment, the second coil 120 has a locking groove 13121, and the locking member 140 includes a locking button 141 and a locking buckle 142 disposed on the locking button 141. The locking buckle 142 is movably disposed in the first coil 110, and the other end of the locking buckle 142 protrudes from the surface of the first coil 110 facing the second coil 120. The locking buckle 142 can be locked or unlocked in the locking groove 13121 by pressing the locking button 141.

[0092] The first housing has a through-hole for installing a locking buckle 142. The top of the locking buckle 142 protrudes from the top of the first coil 110, and the bottom of the locking buckle 142 extends out from the bottom of the first coil 110. The locking buckle 142 is movably disposed in the locking hole. When the locking button 141 is pressed, the locking button 141 can drive the locking buckle 142 to move, so that the end of the locking buckle 142 protruding from the bottom of the first coil 110 can extend into the locking groove 13121 of the lifting platform 131. The first coil 110 is fixed by the cooperation between the locking buckle 142 and the locking groove 13121.

[0093] In one embodiment, a groove is formed in the inner wall of the locking groove 13121, and the locking buckle 142 includes a first locking arm 1421, a second locking arm 1422, and a hook 1423 disposed at the end of the second locking arm 1422. The first locking arm 1421 is connected to the second locking arm 1422, and the connection between the two is rotatably disposed in the first coil 110. The end of the first locking arm 1421 away from the second locking arm 1422 is connected to a locking button 141. When the locking button 141 drives the first locking arm 1421 and the second locking arm 1422 to move, the hook 1423 can extend or move into the first coil 110. When the hook 1423 extends, it can hook into the groove.

[0094] There is an included angle between the first locking arm 1421 and the second locking arm 1422, that is, the first locking arm 1421 and the second locking arm 1422 form a bent lever structure. The connection between the first locking arm 1421 and the second locking arm 1422 is rotatably disposed in the first housing of the first coil 110. Optionally, the locking member 140 also includes a rotating shaft, which is disposed in the first housing and located at the connection between the first locking arm 1421 and the second locking arm 1422, to realize the rotational control of the locking release buckle 142. Optionally, the first locking arm 1421, the second locking arm 1422, and the hook 1423 are an integral structure.

[0095] When the locking button 141 at the end of the first locking arm 1421 is pressed, the first locking arm 1421 can rotate relative to the first coil 110. This rotational mechanism at the connection point drives the second locking arm 1422 to move, allowing the hook 1423 at the end of the second locking arm 1422 to extend out of the first coil 110 and engage in the groove, thus locking the first coil 110. When it is necessary to unlock the first coil 110, pressing the locking button 141 again causes the first locking arm 1421 to rotate relative to the first coil 110. This rotational mechanism at the connection point drives the second locking arm 1422 to move, allowing the hook 1423 at the end of the second locking arm 1422 to disengage from the groove and enter the first coil 110, thus unlocking the first coil 110.

[0096] See Figures 18 to 20 In one embodiment, the locking member 140 further includes an elastic member 143, which is disposed in the first coil 110 and abuts against the locking button 141. The elastic member 143 is used to reset the locking button 141. When the locking button 141 is pressed, the locking button 141 overcomes the elastic force and drives the locking release buckle 142 to move, so that the hook 1423 hooks into the groove of the locking groove 13121. After the locking button 141 is released, the elastic member drives the locking button 141 to automatically reset, so that the hook 1423 abuts against the groove, ensuring that the first coil 110 is reliably locked.

[0097] See Figure 1 , Figure 5 and Figure 6 In one embodiment, the second coil 120 has a wire through hole 122 for leading out connecting wires from the second coil 120. The connecting wires of electrical components in the second coil 120 are led out through the wire through hole 122 to facilitate connection with external devices to achieve corresponding functions.

[0098] The radio frequency coil device 100 of the present invention adjusts the size of the accommodating space A by driving the movement of the lifting platform 131 via the transmission component 132. When the size of the imaging area is large, the transmission component 132 drives the lifting platform 131 to rise, thereby driving the first coil 110 to rise, thus increasing the size of the accommodating space A. When the size of the imaging area is small, the transmission component 132 drives the lifting platform to fall, thereby driving the first coil 110 to fall, thus increasing the size of the accommodating space A. This radio frequency coil device 100 can achieve gradual adjustment of the size of the accommodating space A. The lifting height of the first coil 110 can be adjusted according to different patient sizes to achieve the desired size of the accommodating space A, which is equivalent to stepless speed regulation. The adjustment range is wide and can meet the adjustment of the accommodating space A from three years old to adults.

[0099] Furthermore, by driving the lifting platform to adjust the size of the accommodating space A through the transmission component 132, the first coil 110 and the second coil 120 can be brought closer to the patient's detection object, thereby reducing the distance between the upper part of the transmitting coil and the receiving coil and the lower part of the receiving coil and the object being measured. This can greatly improve the signal-to-noise ratio, thereby improving image quality and avoiding artifacts.

[0100] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0101] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A radio frequency coil device, characterized in that, include: First coil; The second coil, wherein the first coil is detachably installed on the second coil, and the first coil and the second coil form a receiving space; as well as A lifting structure is disposed within the second coil. The lifting structure can contact the first coil and drive the first coil to rise or fall, thereby continuously adjusting the size of the accommodating space. The top of the lifting structure can extend / expose the surface of the second coil and abut / contact with the first coil. The lifting structure includes two lifting platforms and a transmission assembly connected to the two lifting platforms. The transmission assembly is disposed within the second coil, and the two lifting platforms are disposed within the second coil. The transmission assembly can drive the two lifting platforms to extend beyond the second coil. The transmission assembly includes a gear transmission group, two worm gear transmission groups, and at least two lead screw transmission groups. The gear transmission group is respectively connected to the two worm gear transmission groups. Each worm gear transmission group is connected to at least one lead screw transmission group, and at least one lead screw transmission group is connected to the lifting platform. The lead screw transmission group includes a lead screw housing and a lead screw shaft disposed within the lead screw housing. A threaded guide sleeve is disposed within the lead screw housing, and a threaded groove is formed on the outer wall of the lead screw shaft. The threaded guide sleeve can engage with the threaded groove. The lifting structure also includes an adjustment knob, which is located on the second coil and connected to the transmission assembly for controlling the movement of the transmission assembly; A locking element, which is movably or movablely disposed on the first coil and can pass through the first coil to connect to the second coil, is used to lock the first coil to the second coil.

2. The radio frequency coil device according to claim 1, characterized in that, The lifting structure includes two lifting platforms and two transmission components connected to the lifting platforms respectively. The transmission components are disposed in the second coil. The two lifting platforms are disposed in the second coil and can extend out of the second coil. The transmission components can drive the corresponding lifting platform to extend out of the second coil.

3. The radio frequency coil device according to claim 1 or 2, characterized in that, The transmission assembly includes one or more combinations of gear transmission groups, belt transmission groups, chain transmission groups, elevator rope transmission groups, lifting rods, and lead screw and nut transmission groups.

4. The radio frequency coil device according to claim 1 or 2, characterized in that, The surface of the first coil facing the second coil has a positioning groove for mounting the top of the lifting platform.

5. The radio frequency coil device according to claim 4, characterized in that, The lifting platform includes a connecting housing and a positioning platform disposed above the connecting housing. The positioning platform and the connecting housing are arranged in a stepped manner. The connecting housing is used to connect the transmission component, and the positioning platform is used to adapt to the positioning groove.

6. The radio frequency coil device according to claim 1, characterized in that, The second coil has a locking groove. The locking element includes a locking button and a locking buckle disposed on the locking button. The locking buckle is movably disposed in the first coil, and the other end of the locking buckle protrudes from the surface of the first coil facing the second coil. The locking buckle can be locked or unlocked in the locking groove by pressing the locking button.

7. The radio frequency coil device according to claim 6, characterized in that, The locking release includes a first locking arm, a second locking arm, and a hook portion disposed at the end of the second locking arm. The first locking arm is connected to the second locking arm, and the connection point between the two is rotatably disposed in the first coil. The end of the first locking arm away from the second locking arm is connected to the locking button.

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