CN114284025A

CN114284025A - Coil device

Info

Publication number: CN114284025A
Application number: CN202111604324.2A
Authority: CN
Inventors: 艾东
Original assignee: Shenzhen United Imaging Research Institute of Innovative Medical Equipment
Current assignee: Shenzhen United Imaging Research Institute of Innovative Medical Equipment
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-04-05
Anticipated expiration: 2041-12-24
Also published as: CN114284025B

Abstract

The invention relates to a coil device for magnetic resonance imaging of a body region. The coil device comprises a first coil, a second coil and a self-opening and self-closing mechanism. The second coil is correspondingly arranged on the first coil so as to form an accommodating space for accommodating the human body part between the first coil and the second coil. This from opening and shutting mechanism is set up correspondingly between this first coil and this second coil to this from opening and shutting mechanism is used for driving this second coil for this first coil upset under the power supply provides power, with this accommodation space opens and shuts automatically, is convenient for put the human body position of treating the scanning to it in, and need not manually, helps reducing work flow, liberation medical personnel or doctor's both hands.

Description

Coil device

Technical Field

The invention relates to the technical field of magnetic resonance imaging, in particular to a coil device.

Background

Magnetic Resonance Imaging (MRI) is a safe imaging optical examination method without ionizing radiation, which is currently used clinically, and is a type of imaging equipment for medical examination, which is mainly made by using the principle of magnetic resonance. Radio Frequency (RF) receive coils, which are an important component in magnetic resonance imaging systems, can be likened to the eye of an adult, and the resulting sharpness of the image is directly proportional to the coil signal-to-noise ratio/sensitivity. Generally, the farther the distance between the coil and the human body part to be scanned is, the lower the signal-to-noise ratio/sensitivity of the coil is, and accordingly the poorer the definition of the image is, so the market demands for the design of the magnetic resonance coil that the inner wall of the coil should be attached to the human body as much as possible to ensure a high signal-to-noise ratio.

For example, the current magnetic resonance system usually uses an integral head coil with a hard shell for imaging the head, and in order to facilitate the patient to insert the head into the head coil, the opening size of the head coil has to be larger than the maximum transverse size of the human head (i.e. the transverse size of the head at the bridge of the nose), but this makes the distance between the head coil and most of the head to be scanned far, resulting in a low signal-to-noise ratio/sensitivity of the coil and a poor image definition.

In order to solve the above problems, there is a split type head coil in the related art which is composed of an upper half portion and a lower half portion, and the upper half portion and the lower half portion of the split type head coil are electrically connected by a connector. Therefore, the upper half part and the lower half part of the split head coil can be separated, so that after the head to be scanned is firstly placed between the separated upper half part and the separated lower half part, the upper half part and the lower half part are fixedly connected, the opening size of the split head coil can be smaller than the maximum transverse size of the head of a human body, the distance between the head coil and the large part of the area of the head to be scanned is favorably reduced, the attenuation of the signal to noise ratio is further reduced, and a clear head image is obtained.

However, when using this split type head coil to scan patient's head, medical personnel or doctor need hand this split type head coil's upper half to after the patient set a position and fix, this upper half is connected with being fixed in this latter half accurately to the rethread both hands, could begin the magnetic resonance scanning at last. It is thus readily seen that: the split type head coil is complex in work flow, needs multi-step operation and double-hand operation, and cannot liberate hands of medical staff or doctors. Meanwhile, the upper half part and the lower half part of the split head coil need to be provided with a guiding and positioning structure when being combined, or medical staff or doctors need to well judge the locking position so as to realize correct operation. In addition, the upper half part of the split head coil has the risk of falling off in the process of holding, and is easy to damage.

Disclosure of Invention

An advantage of the present invention is to provide a coil device capable of automatically opening and closing an accommodating space therein without manual operation, which helps to reduce a work flow and free hands of a medical staff or a doctor.

Another advantage of the present invention is to provide a coil device, wherein, in an embodiment of the present invention, the coil device can be used without holding the coil by hand, so as to reduce the risk of the coil falling off during holding by hand, which helps to improve the reliability of the coil device.

Another advantage of the present invention is to provide a coil device, wherein, in an embodiment of the present invention, the coil device can automatically open and close the accommodating space only by power provided by a power source without manual operation of a medical staff or a doctor, which facilitates the opening and closing operation and is convenient to use.

Another advantage of the present invention is to provide a coil device, wherein, in an embodiment of the present invention, the coil device enables the second coil and the first coil to be precisely aligned automatically without requiring a medical staff or a doctor to determine the locking position.

Another advantage of the present invention is to provide a coil device, wherein, in an embodiment of the present invention, the coil device can be provided with a self-opening and closing mechanism below the side of the first coil, so as to fully utilize the space, which helps to make the overall structure of the device more compact.

Another advantage of the present invention is to provide a coil device in which it is not necessary to use expensive materials or complicated structures in order to achieve the above advantages or objects. The invention thus succeeds and effectively provides a solution, not only to provide a simple coil arrangement, but also to increase the practicality and reliability of the coil arrangement.

To achieve at least one of the above advantages or other advantages and objects, a coil device for magnetic resonance imaging of a region of a human body is provided, wherein the coil device comprises:

a first coil;

a second coil, wherein the second coil is correspondingly arranged on the first coil so as to form an accommodating space for accommodating the human body part between the first coil and the second coil; and

the self-opening and self-closing mechanism is correspondingly arranged between the first coil and the second coil and is used for driving the second coil to turn over relative to the first coil under the action of power provided by the power source so as to automatically open and close the accommodating space.

According to an embodiment of the application, the self-opening and closing mechanism comprises a rotating wheel rotatably arranged on the first coil and a connecting rod assembly hinged to the first coil and the second coil, wherein the connecting rod assembly is relatively fixedly connected to the rotating wheel, and the rotating wheel is driven to drive the connecting rod assembly to move relative to the first coil, so that the second coil turns away from or towards the first coil.

According to an embodiment of the present application, the link assembly includes a driving link and a driven link, wherein one end of the driving link is fixedly connected to the rotating wheel, and the other end of the driving link is hinged to the second coil, wherein both ends of the driven link are respectively hinged to the first coil and the second coil, and a hinge shaft on both the driving link and the driven link is parallel to a rotating shaft of the rotating wheel.

According to an embodiment of the application, the articulation axis between the driving link and the second coil is parallel to the articulation axis between the driven link and the second coil.

According to an embodiment of the application, an end of the drive link is secured to the wheel in a radial direction of the wheel.

According to an embodiment of the present application, the self-opening and closing mechanism further includes a first hinge connector fixed to the first coil and a second hinge connector fixed to the second coil, wherein the other end of the driving link is pivotally connected to the second hinge connector, and both ends of the driven link are pivotally connected to the first hinge connector and the second hinge connector, respectively.

According to an embodiment of the present application, the self-opening and closing mechanism further includes an elastic element disposed between the first coil and the second coil, and the elastic element applies a pulling force to the second coil toward the first coil.

According to an embodiment of the application, the coil device further comprises the power source, wherein the power source is a pneumatic device, and the pneumatic device comprises a cylinder and a piston reciprocatably disposed in the cylinder, wherein the self-opening and closing mechanism further comprises a direct rotation converting member, wherein the direct rotation converting member is connected to the rotating wheel and the piston of the pneumatic device, respectively, for converting a linear motion of the piston into a rotational motion of the rotating wheel.

According to an embodiment of the present application, the linear rotation converting member is a spur rack, and the rotary wheel is a gear engaged with the spur rack.

According to one embodiment of the application, the straight rack is provided with a dovetail groove matched with the head of the piston.

According to an embodiment of the present application, the first coil includes a base provided with a sliding groove and an arc-surface coil provided to the base, wherein the rotating wheel of the self-opening and closing mechanism is rotatably installed at an opening of the sliding groove of the base, and the spur rack is slidably provided in the sliding groove of the base.

According to an embodiment of the application, the sliding groove of the base extends along an axial direction of the loop of arc, and the sliding groove is located below a side of the loop of arc.

According to an embodiment of the application, the coil device further comprises a mounting base, wherein the mounting base is adapted to correspondingly mount the first coil and the power source for driveably interfacing the self-opening and closing mechanism provided to the first coil with the power source.

In summary, compared with the split type head coil existing in the current market, the invention provides the coil device which can automatically open and close the accommodating space in the coil device, is convenient for placing the human body part to be scanned into the coil device without manual operation, is beneficial to reducing the work flow and freeing the hands of medical staff or doctors.

Drawings

FIG. 1 is a schematic diagram of a closed state of an adjustable head coil apparatus according to an embodiment of the present invention;

fig. 2 is a schematic view showing an opened state of the adjustable head coil apparatus according to the above embodiment of the present invention;

fig. 3 shows an exploded view of the adjustable head coil apparatus according to the above-described embodiment of the present invention;

fig. 4 is a partial schematic action diagram of the adjustable head coil apparatus according to the above-mentioned embodiment of the present invention.

Description of the main element symbols: 1. a coil device; 10. a first coil; 100. an accommodating space; 11. a base; 110. a chute; 12. a cambered surface coil; 20. a second coil; 30. a self-opening and closing mechanism; 31. a rotating wheel; 311. a gear; 32. a connecting rod assembly; 321. a driving connecting rod; 322. a driven connecting rod; 33. a first hinged connection; 34. a second hinged connection; 35. an elastic element; 351. a tension spring; 36. a direct rotation converting member; 361. straight rack; 40. a power source; 41. a pneumatic device; 411. a cylinder; 412. a piston; 50. installing a base body; 51. a coil mounting portion; 510. a coil groove; 52. a power source mounting portion; 520. a cylinder groove.

The present invention is described in further detail with reference to the drawings and the detailed description.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "disposed" or "mounted" to another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, an embodiment of the present invention provides a coil device 1, which can automatically open and close a receiving space therein, so as to facilitate placing a body part to be scanned therein, so that during a magnetic resonance imaging process of the body part using the coil device 1, no manual operation is required, which helps to reduce a work flow and free hands of a medical staff or a doctor. It is understood that, in the above embodiments of the present application, the human body part mentioned in the present application may be implemented as, but not limited to, a head of a human body, but in other examples of the present application, the human body part may also be implemented as other parts of the human body, such as a hand or a foot, and the description of the present application is omitted here.

Specifically, as shown in fig. 1 and 2, the coil device 1 may include a first coil 10, a second coil 20, and at least one self-opening and closing mechanism 30. The second coil 20 is correspondingly disposed to the first coil 10 to form an accommodating space 100 for accommodating the human body part between the first coil 10 and the second coil 20. The self-opening and closing mechanism 30 is correspondingly arranged between the first coil 10 and the second coil 20, and the self-opening and closing mechanism 30 is used for driving the second coil 20 to turn relative to the first coil 10 under the action of power provided by the power source 40 so as to automatically open and close the accommodating space 100, wherein when the accommodating space 100 is opened, the first coil 10 and the second coil 20 are opened to move into or out of the part of the human body; when the receiving space 100 is closed, the first coil 10 and the second coil 20 are closed to each other for commonly surrounding the human body part, facilitating magnetic resonance imaging of the human body part.

It should be noted that, as shown in fig. 3 and 4, the power source 40 may be, but is not limited to, implemented as a pneumatic device 41 to provide power for the self-opening and closing mechanism 30 through the pneumatic device 41, so that the self-opening and closing mechanism 30 can drive the second coil 20 to turn over relative to the first coil 10 to automatically open and close the accommodating space 100. It is understood that, in other examples of the present application, the power source 40 may also be implemented as other types of power devices, such as a hydraulic device or an electric device, as long as the power device can provide power for the self-opening and closing mechanism 30, and the description of the present application is omitted.

More specifically, as shown in fig. 3 and 4, the self-opening and closing mechanism 30 may include a rotating wheel 31 rotatably disposed on the first coil 10 and a connecting rod assembly 32 hinged to the first coil 10 and the second coil 20, wherein the connecting rod assembly 32 is relatively fixed to the rotating wheel 31, and the rotating wheel 31 is driven to rotate relative to the first coil 10 by the power provided by the power source 40, so as to move the connecting rod assembly 32 relative to the first coil 10 to flip the second coil 20 relative to the first coil 10, thereby automatically opening or closing the accommodating space 100 formed between the first coil 10 and the second coil 20.

For example, as shown in fig. 3 and 4, the link assembly 32 of the self-opening and closing mechanism 30 may include a driving link 321 and a driven link 322, wherein one end of the driving link 321 is fixedly connected to the rotating wheel 31 to rotate synchronously with the rotating wheel 31, and the other end of the driving link 321 is hinged to the second coil 20, wherein both ends of the driven link 322 are respectively hinged to the first coil 10 and the second coil 20, and hinge axes of the driving link 321 and the driven link 322 are parallel to a rotating shaft of the rotating wheel 31. In this way, when the rotating wheel 31 of the self-opening and closing mechanism 30 is driven by the pneumatic device 41 to rotate relative to the first coil 10, the driving link 321 rotates synchronously with the rotating wheel 31 to drive the second coil 20 to rotate around the hinge axis between the driven link 322 and the first coil 10 and drive the driven link 322 to rotate relative to the first coil 10, so that the second coil 20 is turned relative to the first coil 10 around the fulcrum provided by the driven link 322 without directly hinging or pivoting the second coil 20 to the first coil 10, which helps to reduce the assembly difficulty of the coil device 1.

It should be noted that when the rotating wheel 31 rotates in the forward direction relative to the first coil 10, the driving link 321 rotates synchronously with the rotating wheel 31 to drive the driven link 322 to rotate in the forward direction relative to the first coil 10, so that the second coil 20 is turned away from the first coil 10 to open the accommodating space 100 formed between the first coil 10 and the second coil 20, so that the coil device 1 is in the open state; when the rotating wheel 31 rotates in the opposite direction with respect to the first coil 10, the driving link 321 rotates synchronously with the rotating wheel 31 to drive the driven link 322 to rotate in the opposite direction with respect to the first coil 10, so that the second coil 20 is turned toward the first coil 10 to close the accommodating space 100 formed between the first coil 10 and the second coil 20, and the coil device 1 is in a closed state. It is understood that the forward rotation and the reverse rotation mentioned in the present invention are relative, such as when the forward rotation is counterclockwise rotation to open the first coil 10 and the second coil 20, the reverse rotation is clockwise rotation to close the first coil 10 and the second coil 20; vice versa, as long as the accommodation space 100 can be opened or closed.

Preferably, the hinge axis between the driving link 321 and the second coil 20 is parallel to the hinge axis between the driven link 322 and the second coil 20, that is, the hinge axis between the driving link 321 and the second coil 20 and the hinge axis between the driven link 322 and the second coil 20 are not coincident with each other, that is, the driving link 321 and the driven link 322 are respectively and coaxially hinged to the second coil 20, so that the second coil 20 can be flipped with respect to the first coil 10 by applying a small flipping force to the second coil 20 through the link assembly 32.

More preferably, as shown in fig. 4, one end portion of the driving link 321 is fixedly connected to the wheel 31 in a radial direction of the wheel 31 so as to fully utilize the rotational force of the wheel 31. For example, an end of the driving link 321 may be coaxially hinged to a rotating shaft of the rotating wheel 31, and the driving link 321 may be riveted to a side surface of the rotating wheel 31 to ensure that the driving link 321 passes through a shaft center of the rotating wheel 31.

According to the above-mentioned embodiment of the present application, as shown in fig. 3 and 4, the self-opening and closing mechanism 30 may further include a first hinge connector 33 fixed to the first coil 10 and a second hinge connector 34 fixed to the second coil 20, wherein the other end of the driving link 321 is pivotally connected to the second hinge connector 34 to hinge the driving link 321 to the second coil 20 through the second hinge connector 34, and the two ends of the driven link 322 are respectively pivotally connected to the first hinge connector 33 and the second hinge connector 34 to respectively hinge the driven link 322 to the first coil 10 and the second coil 20 through the first hinge connector 33 and the second hinge connector 34.

Preferably, the first hinge connector 33 extends from the first coil 10 toward the second coil 20, and the second hinge connector 34 extends from the second coil 20 toward the first coil 10. It can be understood that the lengths of the driving link 321 and the driven link 322 can be correspondingly shortened by the first hinge connector 33 and the second hinge connector 34, which helps to improve the structural stability of the driving link 321 and the driven link 322, and prevent them from being bent or damaged.

More preferably, the driving link 321 and the driven link 322 in the connecting rod assembly 32 extend obliquely on the same side, so that while the second coil 20 is driven to flip relative to the first coil 10 by the connecting rod assembly 32, the second coil 20 can also be driven to move away from or close to the first coil 10 by the connecting rod assembly 32, so that the second coil 20 flips away from or towards the first coil 10, so as to avoid the second coil 20 from interfering with the first coil 10. It can be understood that, when the rotating wheel 31 rotates in the forward direction, the ends of the driving link 321 and the driven link 322 hinged to the second coil 20 are away from the first coil 10, so that the second coil 20 is away from the first coil 10, thereby opening the accommodating space 100; when the rotating wheel 31 rotates in the opposite direction, the ends of the driving link 321 and the driven link 322 hinged to the second coil 20 will approach the first coil 10, so that the second coil 20 approaches the first coil 10, and the accommodating space 100 is closed.

According to the above-mentioned embodiment of the present application, as shown in fig. 3 and 4, the self-opening and closing mechanism 30 may further include an elastic element 35 disposed between the first coil 10 and the second coil 20, wherein the elastic element 35 applies a pulling force to the second coil 20 toward the first coil 10, for pulling the second coil 20 to cover the first coil 10 after the power source 40 removes the power applied to the rotating wheel 31, so as to automatically close the accommodating space 100.

It is noted that the elastic element 35 may be, but is not limited to be, embodied as a tension spring 351. Of course, in other examples of the present application, the elastic element 35 may also be implemented as other elements such as rubber bands, etc., as long as the required tension can be provided, and the description of the present application is omitted.

Preferably, one end of the tension spring 351 is connected to the first hinge connector 33, and the other end of the tension spring 351 is connected to the second hinge connector 34, wherein the tension spring 351 is located between the driving link 321 and the driven link 322 to ensure that the driving link 321 and the driven link 322 are reversely rotated by only the tension force provided by the tension spring 351, so as to automatically close the accommodating space 100.

According to the above-mentioned embodiment of the present application, as shown in fig. 3 and 4, the pneumatic device 41 may include, but is not limited to, a cylinder 411 and a piston 412 reciprocally disposed in the cylinder 411, wherein the self-opening and closing mechanism 30 may further include a straight-rotation converting element 36, wherein the straight-rotation converting element 36 is respectively connected to the rotating wheel 31 and the piston 412 of the pneumatic device 41, and is configured to convert a linear motion of the piston 412 into a rotational motion of the rotating wheel 31, so as to enable the pneumatic device 41 to apply a required power to the self-opening and closing mechanism 30.

Illustratively, as shown in fig. 3 and 4, the straight rotation converting member 36 is implemented as a spur rack 361, and the rotating wheel 31 is implemented as a gear 311 matched with the spur rack 361, wherein the spur rack 361 is engaged with the gear 311, and an end of the spur rack 361 is connected with a head of the piston 412, so that when the piston 412 of the pneumatic device 41 reciprocates, the spur rack 361 is pushed by the piston 412 to rotate the gear 311, thereby achieving an effect of driving the rotating wheel 31 to rotate by the pneumatic device 41, and further enabling the accommodating space 100 to be opened or closed.

Preferably, the spur rack 361 is provided with a dovetail groove adapted to the head of the piston 412, so that when the head of the piston 412 is inserted into the dovetail groove of the spur rack 361, the spur rack 361 and the piston 412 are physically connected, so that the spur rack 361 can reciprocate linearly with the piston 412. Meanwhile, when the head of the piston 412 is pulled out of the dovetail groove of the spur rack 361, the spur rack 361 and the piston 412 are disassembled, and the disassembly and the maintenance are convenient.

According to the above-mentioned embodiment of the present application, the first coil 10 may be made of a hard material wrapping the rf antenna, so as to form the accommodating space 100 with the second coil 20, and at the same time, can be fixed on an object such as a hospital bed and support the pressure applied by the part to be scanned (such as the head) of the patient, so as to ensure the stability of the whole structure. It is understood that the hard material for preparing the first coil 10 may be, but is not limited to, hard plastic, polymer material or metal material, and the like, which is not described in detail herein.

Correspondingly, the second coil 20 may also be made of, but not limited to, a hard material wrapped around the rf antenna. It is noted that in other examples of the present application, the second coil 20 may be made of a flexible material wrapping the rf antenna. It is understood that the flexible material for preparing the second coil 20 may be, but is not limited to, implemented as a material such as foam EVA, artificial leather, or PU leather, which helps to simplify the manufacturing process and reduce the manufacturing cost. In other words, the second coil 20 has a certain flexibility, so that the shape can be finely adjusted according to the shape and size difference of the human body part during the use process, and the human body part can be better fitted; but also has a certain flexibility or tension so that the second coil 20 can maintain its ergonomic structure, such as an arc shape, so as to flip the second coil 20 to open and close the receiving space 100.

In addition, the rf antenna for preparing the first coil 10 and the second coil 20 is mainly used for contributing to rf signals for imaging a human body part. In other words, the rf antennas are provided with some distributed capacitors for generating resonance at a specific frequency to contribute to the rf signal for imaging the human body. It is understood that the radio frequency antenna may be, but is not limited to being, implemented as a closed coil made of a conductive material such as a copper substrate, a liquid metal, a coaxial wire, or a conductive silver paste, respectively.

Illustratively, as shown in fig. 3 and 4, the first coil 10 may include a base 11 provided with a sliding slot 110 and a curved-surface coil 12 disposed on the base 11, wherein the gear 311 of the self-opening and closing mechanism 30 is rotatably mounted at an opening of the sliding slot 110 of the base 11, and wherein the spur rack 361 is slidably disposed in the sliding slot 110 of the base 11 to ensure that the spur rack 361 always meshes with the gear 311 during sliding in the sliding slot 110.

Preferably, the sliding groove 110 of the base 11 extends along the axial direction of the loop 12, and the sliding groove 110 is located below the loop 12, so that the rotating wheel 31 and the first hinge connector 33 of the self-opening and closing mechanism 30 are located in the space between the loop 12 and the base 11, which helps to improve the overall structural compactness of the coil device 1. It can be understood that, since the side portion of the loop arc 12 of the first coil 10 is tilted upwards, the loop arc 12 and the base 11 form a larger space below the side of the loop arc 12, so as to install the self-opening and closing mechanism 30. At this time, the hinge axis of the connecting rod assembly 32 and the second coil 20 is perpendicular to the central axis of the arc coil 12, so that the second coil 20 can be flipped around the axis perpendicular to the central axis of the arc coil 12.

It should be understood that, although fig. 1 to 4 show that the coil device 1 includes two self-opening and closing mechanisms 30 respectively located at the left and right sides of the first coil 10, the two self-opening and closing mechanisms are only examples and do not limit the scope of the present application. For example, in other examples of the present application, the coil device 1 may only include one self-opening and closing mechanism 30 located on one side of the first coil 10, and the other side of the first coil 10 is directly hinged to the second coil 20, as long as the accommodating space 100 formed between the first coil 10 and the second coil 20 can be automatically opened and closed, which is not described herein again.

In addition, in other examples of the present application, the self-opening and closing mechanism 30 may also be disposed to turn the second coil 20 around an axis parallel to the central axis of the arc coil 12, so as to completely open the accommodating space 100, and avoid the second coil 20 interfering with or affecting the taking and placing of the human body part to be scanned.

It should be noted that, since the rf antennas in the first coil 10 and the second coil 20 need to be powered when the coil device 1 is used for magnetic resonance imaging, the coil device 1 of the present application may, but is not limited to, electrically connect the rf antenna of the second coil 20 to the first coil 10 through a connector (not shown in the figure), so as to simultaneously power the rf antennas in the second coil 20 and the first coil 10 through a unified power supply port, so as to implement corresponding magnetic resonance imaging. Of course, in other examples of the present application, the first coil 10 and the second coil 20 may be provided with independent power supply ports to receive power supply respectively.

It should be noted that, in the above-mentioned embodiment according to the present application, as shown in fig. 1 to 3, the coil device 1 may further include a mounting base 50, wherein the first coil 10 and the power source 40 are adapted to be correspondingly mounted on the mounting base 50, so that the self-opening and closing mechanism 30 disposed on the first coil 10 can be driveably connected to the power source 40, so that the coil device 1 and the power source 40 are integrated together to form a stable system, so as to provide stable power to the self-opening and closing mechanism 30 through the power source 40, and ensure that the accommodating space 100 is automatically opened or closed.

It is understood that the mounting base 50 can be, but is not limited to, implemented as a bed, so that the patient lies on the bed to place the region to be scanned in the accommodating space 100, which helps to improve the comfort of the patient during the magnetic resonance scanning. Of course, in other examples of the present application, the mounting base 50 may be implemented as other types of bases such as a table and a chair.

Alternatively, as shown in fig. 1 to 3, the mounting base 50 is provided with a coil mounting portion 51 adapted to the first coil 10 and a power source mounting portion 52 adapted to the pneumatic device 41, wherein the coil mounting portion 51 and the power source mounting portion 52 are correspondingly arranged, so that the first coil 10 mounted to the coil mounting portion 51 and the pneumatic device 41 mounted to the power source mounting portion 52 are matched with each other to ensure that the straight-rotation converting element 36 of the self-opening and closing mechanism 30 is connected to the piston 412 of the pneumatic device 41, thereby converting the linear motion of the piston 412 into the rotational motion of the runner 31.

Preferably, as shown in fig. 1 to 3, the coil mounting part 51 is implemented as a coil groove 510 matched with the base 11 of the first coil 10, and the power source mounting part 52 is implemented as a cylinder groove 520 matched with the cylinder 411 of the pneumatic device 41, wherein the coil groove 510 communicates with the cylinder groove 520 to allow the piston 412 of the pneumatic device 41 to protrude into the coil groove 510 to be connected with the direct-rotation converting member 36 of the self-opening and closing mechanism 30.

More preferably, the base 11 of the first coil 10 is provided with a notch corresponding to the dovetail groove of the spur rack 361, so that when the base 11 of the first coil 10 is installed in the coil groove 510, the piston 412 of the pneumatic device 41 automatically engages with the dovetail groove of the spur rack 361 through the notch of the base 11, thereby realizing the connection between the coil device 1 and the power source 40. It is understood that in other examples of the present application, the power source 40 may also be part of the coil device 1, i.e. the coil device 1 may comprise the power source 40.

It is worth noting that the control system of the power source 40 of the present application can be controlled by software, so that the coil device 1 can be opened and closed without the need of contacting with medical staff or doctors, so as to completely liberate the hands of the medical staff or doctors, and the self-opening and closing mechanism 30 can also align the first coil 10 and the second coil 20 precisely, so that the locking position is not observed or judged by the medical staff or doctors, and human errors are avoided.

In particular, the coil device 1 may further include an automatic recognition system communicably connected to the control system of the power source 40, so that when the automatic recognition system recognizes that the patient needs to place the part to be scanned in the accommodating space 100 or take out the part from the accommodating space 100, the automatic recognition system sends an opening signal to the control system of the power source 40, so that the control system controls the power source 40 to provide an opening power to cause the accommodating space 100 of the coil device 1 to be opened; when the automatic identification system identifies that the patient has put the to-be-scanned part in place, the automatic identification system sends a closing signal to the control system of the power source 40, so that the control system controls the power source 40 to provide closing power, so that the accommodating space 100 of the coil device 1 is closed, and subsequent magnetic resonance imaging operation is facilitated.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A coil arrangement for magnetic resonance imaging of a region of a human body, the coil arrangement comprising:

a first coil (10);

a second coil (20), wherein the second coil (20) is correspondingly arranged to the first coil (10) to form an accommodating space (100) for accommodating the human body part between the first coil (10) and the second coil (20); and

the self-opening and closing mechanism (30), wherein the self-opening and closing mechanism (30) is correspondingly arranged between the first coil (10) and the second coil (20), and the self-opening and closing mechanism (30) is used for driving the second coil (20) to turn relative to the first coil (10) under the action of power provided by the power source (40) so as to automatically open and close the accommodating space (100).

2. The coil arrangement as claimed in claim 1, characterized in that the self-opening and closing mechanism (30) comprises a wheel (31) rotatably arranged on the first coil (10) and a linkage assembly (32) hinged to the first coil (10) and the second coil (20), wherein the linkage assembly (32) is relatively fixed to the wheel (31), and the wheel (31) is driven to move the linkage assembly (32) relative to the first coil (10) such that the second coil (20) is flipped away from or towards the first coil (10).

3. The coil device according to claim 2, wherein the link assembly (32) comprises a driving link (321) and a driven link (322), wherein one end of the driving link (321) is fixedly connected to the rotating wheel (31) and the other end of the driving link (321) is hinged to the second coil (20), wherein both ends of the driven link (322) are respectively hinged to the first coil (10) and the second coil (20), and the hinge axes of the driving link (321) and the driven link (322) are parallel to the rotating shaft of the rotating wheel (31).

4. A coil arrangement according to claim 3, characterized in that one end of the drive link (321) is secured to the wheel (31) in the radial direction of the wheel (31).

5. The coil device according to claim 4, wherein the self-opening and closing mechanism (30) further comprises a first hinge connector (33) fixed to the first coil (10) and a second hinge connector (34) fixed to the second coil (20), wherein the other end of the driving link (321) is pivoted to the second hinge connector (34), and both ends of the driven link (322) are pivoted to the first hinge connector (33) and the second hinge connector (34), respectively.

6. The coil device according to claim 5, characterized in that the self-opening and closing mechanism (30) further comprises an elastic element (35) disposed between the first coil (10) and the second coil (20), and the elastic element (35) applies a pulling force to the second coil (20) toward the first coil (10).

7. The coil device according to any one of claims 2 to 6, characterized in that the coil device further comprises the power source (40), wherein the power source (40) is a pneumatic device (41), and the pneumatic device (41) comprises a cylinder (411) and a piston (412) reciprocatably movably disposed to the cylinder (411), wherein the self-opening and closing mechanism (30) further comprises a direct rotation converting member (36), wherein the direct rotation converting member (36) is connected to the runner (31) and the piston (412) of the pneumatic device (41), respectively, for converting a linear motion of the piston (412) into a rotational motion of the runner (31).

8. The coil device as claimed in claim 7, wherein said spur gear (36) is a spur rack (361), and said rotor (31) is a gear (311) engaged with said spur rack (361).

9. The coil device according to claim 8, wherein the first coil (10) comprises a base (11) provided with a sliding slot (110) and a curved coil (12) provided on the base (11), wherein the rotating wheel (31) of the self-opening and closing mechanism (30) is rotatably mounted at an opening of the sliding slot (110) of the base (11), and the spur rack (361) is slidably provided in the sliding slot (110) of the base (11).

10. The coil arrangement according to any of claims 1 to 6, characterized in that the coil arrangement further comprises a mounting base (50), wherein the mounting base (50) is adapted to mount the first coil (10) and the power source (40) correspondingly for drivingly traversable the self opening and closing mechanism (30) provided to the first coil (10) and the power source (40).