CN215641771U

CN215641771U - Glove coil assembly

Info

Publication number: CN215641771U
Application number: CN202121357726.2U
Authority: CN
Inventors: 陈莲; 王振; 范贤文; 陆海
Original assignee: Shanghai United Imaging Healthcare Co Ltd
Current assignee: Shanghai United Imaging Healthcare Co Ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2022-01-25
Anticipated expiration: 2031-06-18

Abstract

The present application relates to a glove coil assembly. The glove coil assembly comprises a plurality of finger shells, a palm shell and a plurality of coil units which are arranged at intervals. Each finger case encloses a finger receiving space. The palm shell is connected with a plurality of finger shells arranged at intervals respectively. The palm shell surrounds and forms a palm accommodating space. The palm accommodation space is communicated with the finger accommodation space. At least one coil unit is disposed in the finger casing. And at least one coil unit is disposed in the palm housing. The plurality of coil units are respectively arranged on the palm shell and the plurality of finger shells and reasonably distributed on the fingers and the palm of the patient. The glove coil assembly can scan each finger and palm of a patient respectively, so that magnetic resonance signals generated by each finger and palm can be obtained in a targeted manner, and full-hand imaging is facilitated.

Description

Glove coil assembly

Technical Field

The application relates to the technical field of magnetic resonance, in particular to a glove coil assembly.

Background

Magnetic Resonance Imaging (MRI) has been widely used for diagnosis of diseases and observation of therapeutic effects. The hand plays a very important key role in the daily life and the study and work of human beings, so the health of the hand is very important. The magnetic resonance can clearly display the basic pathological changes of the finger joints and display the early pathological changes of various lesions, and has obvious advantages compared with other imaging methods. MRI is the best imaging examination method for wrist lesions at present, and plays a very important role in differential diagnosis of different diseases.

However, the conventional coil for scanning the palm and the wrist has poor imaging effect, cannot accurately display the scanned image of each position, and is not beneficial to differential diagnosis of hand diseases. And the traditional coil assembly is a hard structure, a fixed space is formed, the detection object can only complete scanning in the fixed space, and the magnetic resonance examination of a specific gesture cannot be performed.

SUMMERY OF THE UTILITY MODEL

Based on this, there is a need for a glove coil assembly.

The present application provides a glove coil assembly. The glove coil assembly comprises a plurality of finger shells, a palm shell and a plurality of coil units which are arranged at intervals. Each finger case encloses a finger receiving space. The palm shell is respectively connected with the finger shells arranged at intervals. The palm shell surrounds and forms a palm accommodating space. The palm accommodation space is communicated with the finger accommodation space.

At least one coil unit is arranged on the finger shell. And at least one of the coil units is disposed on the palm housing. In one embodiment, the finger enclosure is angled from 0 degrees to 180 degrees from the palm enclosure.

In one embodiment, the plurality of spaced apart finger casings are not identical.

In one embodiment, the palm casing includes a front surface and a back surface disposed oppositely, and the front surface and the back surface are respectively provided with a plurality of the coil units. In one embodiment, the number of the coil units disposed on the front side is greater than the number of the coil units disposed on the back side.

In one embodiment, the coil unit corresponding to the finger case partially overlaps the coil unit corresponding to the front or back of the palm case.

In one embodiment, each of the coil units includes a coil body, a tuning capacitor, a matching capacitor, a first matching inductor, a second matching inductor, a diode, and a preamplifier. The coil body is bent in a set direction to form a first connection end and a second connection end which are opposite. One end of the tuning capacitor is connected with the first connecting end.

And one end of the matching capacitor is connected with the other end of the tuning capacitor. And the other end of the matching capacitor is connected with the second connecting end. One end of the first matching inductor is connected with one end of the matching capacitor. And one end of the second matching inductor is connected with the other end of the matching capacitor. And the positive end of the diode is connected with the other end of the first matching inductor. And the cathode end of the diode is connected with the other end of the second matching inductor. The first input end of the preamplifier is connected with the positive end of the diode. The second input terminal of the preamplifier is connected with the negative terminal of the diode. The output end of the preamplifier outputs a radio frequency signal.

In one embodiment, the palm housing and the finger housing are flexible housings.

In one embodiment, the coil unit comprises a coil body, the coil body comprises a protective layer and a metal layer, the protective layer is coated on the periphery of the metal layer, and the metal layer is formed by weaving a plurality of metal wires.

In one embodiment, the coil unit is a double-layer structure surface coil formed by overlapping two layers of the coil bodies.

The present application further provides a glove coil assembly, comprising:

the finger shell comprises a plurality of finger shells arranged at intervals, wherein each finger shell surrounds to form a finger containing space, and the finger shells can be bent along a set direction;

the palm shell is respectively connected with the plurality of finger shells arranged at intervals, the palm shell comprises a front surface and a back surface which are oppositely arranged, the front surface and the back surface are matched to form a palm accommodating space, and the palm accommodating space is communicated with the finger accommodating space;

and the plurality of coil units comprise at least one coil unit arranged on the palm shell and at least one coil unit arranged on the front surface or the back surface.

In one embodiment, the finger casing is made of a flexible material, the palm casing is made of a hard material, and the coil unit arranged on the finger casing is made of a flexible material or arranged around the long axis direction of the finger casing.

In the glove coil assembly, the plurality of finger cases are arranged at intervals and are independent of each other. The distance between a plurality of finger shells is adapted to the distance between the fingers of the patient, so that the finger shell is convenient for the patient to wear. The finger receiving space is used for receiving the finger of the patient. One of the finger housings corresponds to each finger of the patient. The palm accommodating space is used for accommodating the palm of the patient. Palm accommodation space, a plurality of the finger accommodation space communicates each other, makes things convenient for the patient to wear. It can be understood that the palm receiving space and the plurality of finger receiving spaces are communicated with each other to form a hand receiving space for receiving the hand of the patient. Thus, the glove coil assembly can be worn directly on the patient's hand. A plurality of the finger housings are spaced apart and may correspond to different fingers of a patient, respectively.

At least one coil unit corresponds to the finger shell and is used for receiving magnetic resonance signals generated by the finger part. At least one coil unit corresponds to the palm shell and is used for receiving magnetic resonance signals generated by the palm part.

The plurality of coil units are respectively arranged on the palm shell and the plurality of finger shells and reasonably distributed on the fingers and the palm of the patient. The glove coil assembly can scan each finger and palm of a patient respectively, so that magnetic resonance signals generated by each finger and palm can be obtained in a targeted manner, and full-hand imaging is facilitated. Therefore, the scanning images of the fingers and the palm can be more accurately displayed through the glove coil assembly, and the differential diagnosis of hand diseases is more facilitated.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of the overall structure of a glove coil assembly according to one embodiment of the present application.

Fig. 2 is a schematic structural diagram of a finger case and a palm case in an embodiment provided in the present application.

Fig. 3 is a schematic structural diagram of a finger case and a palm case in an embodiment provided in the present application.

Fig. 4 is a schematic structural diagram of a finger case and a palm case in an embodiment provided in the present application.

Fig. 5 is a schematic structural diagram of a coil unit in an embodiment provided in the present application.

Fig. 6 is a schematic cross-sectional view of a coil body of a coil unit in one embodiment provided herein.

Fig. 7 is a schematic structural diagram of a coil unit in another embodiment provided in the present application.

Fig. 8a is a schematic diagram of a decoupling structure of adjacent coil units in an embodiment provided by the present application.

Fig. 8b is a schematic diagram of a decoupling structure of adjacent coil units in another embodiment provided by the present application.

Fig. 8c is a schematic diagram of a decoupling structure of adjacent coil units in still another embodiment provided by the present application.

Description of reference numerals:

glove coil assembly 100, finger case 10, palm case 20, coil unit 30, finger receiving space 110, palm receiving space 210, coil body 310, protective layer 311, metal layer 312, tuning capacitor 320, matching capacitor 330, first matching inductor 340, second matching inductor 350, diode 360, preamplifier 370.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

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 application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first resistance may be referred to as a second resistance, and similarly, a second resistance may be referred to as a first resistance, without departing from the scope of the present application. The first resistance and the second resistance are both resistances, but they are not the same resistance.

It is to be understood that "connection" in the following embodiments is to be understood as "electrical connection", "communication connection", and the like if the connected circuits, modules, units, and the like have communication of electrical signals or data with each other.

As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.

Referring to fig. 1, the present application provides a glove coil assembly 100. The glove coil assembly 100 includes a plurality of finger housings 10, a palm housing 20, and a plurality of coil units 30, which are spaced apart from each other. Each of the finger cases 10 encloses a finger-receiving space 110. The palm case 20 is connected to the plurality of finger cases 10 arranged at intervals, respectively. The palm case 20 may form a palm receiving space 210. The palm accommodating space 210 communicates with the finger accommodating space 110. For example, the palm housing 20 may surround (e.g., circumferentially surround) to form a palm receiving space 210. For another example, the palm casing 20 may include a front side and a back side disposed opposite to each other, and the front side and the back side cooperate to form a palm accommodating space 210. The front and back sides are separable from each other to form an open palm-receiving space 210. Alternatively, the front and back sides may be connected to each other to form a circumferentially closed palm-receiving space 210.

At least one coil unit 30 is disposed on the finger casing 10. And at least one of the coil units 30 is disposed at the palm case 20. The plurality of coil units 30 are for receiving magnetic resonance signals generated at the imaging site. The finger case 10 and the palm case 20 may be provided as a single layer, and at least one coil unit 30 is provided on the finger case 10 and the palm case 20. Alternatively, the finger case 10 and the palm case 20 may be provided in two, three, or more layers, and at least one coil unit 30 is provided inside the finger case 10 and the palm case 20.

The finger shells 10 are spaced apart from each other and independent from each other, and the finger shells 10 can be bent along a predetermined direction. The distance between the finger shells 10 is adapted to the distance between the fingers of the patient, so that the finger shells are convenient for the patient to wear. The finger receiving space 110 is for receiving a finger of a patient. One of the finger cases 10 corresponds to each finger of the patient. The palm receiving space 210 is used for receiving the palm of the patient. The palm receiving space 210 is in communication with one or more of the plurality of finger receiving spaces 110, facilitating wearing by the patient. It can be understood that the palm receiving space 210 and one or more of the finger receiving spaces 110 are mutually communicated with each other to form a hand receiving space for receiving the hand of the patient. Thus, the glove coil assembly 100 can be worn directly on the patient's hand. A plurality of the finger cases 10 are spaced apart and may correspond to different fingers of the patient.

At least one coil unit 30 corresponds to the finger casing 10 for receiving the magnetic resonance signal generated by the finger part. At least one of the coil units 30 corresponds to the palm housing 20 for receiving magnetic resonance signals generated by the palm portion.

The finger case 10 may be provided as a flexible material, and the palm case 20 may be provided as a hard material. The coil unit 30 provided in the finger casing 10 may also be made of a flexible material, or the coil unit 30 provided in the finger casing 10 may be made of a copper sheet and may be arranged around the long axis of the finger casing 10.

The plurality of coil units 30 are respectively disposed on the surface or inside of the palm housing 20 and the plurality of finger housings 10, and are reasonably distributed on the fingers and palm of the patient. The glove coil assembly 100 can scan each finger and palm of the patient, so as to obtain the magnetic resonance signals generated by each finger and palm with pertinence, and facilitate full-hand imaging. Therefore, the glove coil assembly 100 can more accurately display the scanned images of the finger and palm parts, which is more beneficial to the differential diagnosis of hand diseases.

Referring to fig. 2, 3 and 4, in one embodiment, the included angle between the finger casing 10 and the palm casing 20 is any one of an angle from 0 degree to 180 degrees. It is understood that the finger case 10 and the palm case 20 may be angled at different angles.

Referring to fig. 2, 4 finger cases 10 and the palm case 20 may form an angle of 0 degree. The finger case 10 corresponding to the thumb and the palm case 20 may form an angle of 180 degrees.

Referring to fig. 3, 5 finger shells 10 and the palm shell 20 form an included angle of 0 degree, so that the hand of the patient is in a fist-making shape after wearing the finger shell.

Referring to fig. 4, 5 finger cases 10 may be bent to form different angles to adapt to the hand form change of the patient.

The glove coil assembly 100 can be worn on the hand of a patient and is adapted to different hand shapes of the patient, and is not limited to a certain hand posture. By the glove coil assembly 100, different scans of various hand types can be satisfied, and the glove coil assembly can be applied to various human body postures. Therefore, the glove coil assembly 100 is worn on the hand of the patient, so that the scanning posture of the hand of the patient can be more freely performed. The glove coil assembly 100 is more flexible to wear and the scanning is more targeted. Therefore, the glove coil assembly 100 can more accurately display the scanned images of the fingers and the palm, which is more beneficial to differential diagnosis of hand diseases.

In one embodiment, the plurality of spaced apart finger casings 10 are not identical. It is understood that the plurality of finger cases 10, which are spaced apart, are different in shape and size. A plurality of the finger cases 10 may correspond to a thumb (thumb), an index finger, a middle finger, a ring finger, and a little finger (little finger) of a patient, respectively. A plurality of the finger cases 10 may be provided in different lengths and shapes to accommodate individual fingers of a patient.

Referring to fig. 1, in one embodiment, two adjacent coil units 30 partially overlap. The coil units 30 are partially overlapped, and coupling of adjacent coil units 30 can be removed. Furthermore, the patient's hand can do some local activity in the glove coil assembly 100 without receiving magnetic resonance signals due to movement of the patient's hand. When the patient's hand is small, the glove coil assembly 100 can also perform a full scan of the patient's hand, regardless of the position of the patient's hand. And, the coil units 30 are partially overlapped, so that mutual interference can be reduced, and the signal-to-noise ratio of the image and the penetration capability of the received signal can be improved.

In one embodiment, the coil units 30 respectively corresponding to two adjacent finger shells 10 do not overlap and are respectively arranged along the long axis direction of the finger shells 10.

Since the respective fingers of the patient are independent of each other, the coil units 30 corresponding to the plurality of finger cases 10 may not overlap. One of the finger cases 10 corresponds to one finger of the patient and corresponds to the fixed coil unit 30.

In one embodiment, the palm casing 20 includes a front surface and a back surface disposed oppositely, and the front surface and the back surface are provided with a plurality of the coil units 30. It is understood that a plurality of the coil units 30 are disposed on the surface or inside of the front surface. A plurality of the coil units 30 are provided on the surface of the reverse side or inside. The front face corresponds to the back of the hand. The reverse side corresponds to the palm of the hand. The plurality of coil units 30 on the front side and the plurality of coil units 30 on the back side form a detection receiving space. When the hand of the patient is detected, the hand is arranged in the scanning space for scanning. The coil units 30 respectively arranged on the front surface and the back surface can scan the palm and the back of the hand of the patient in different directions, and are more favorable for differential diagnosis of hand diseases.

In one embodiment, the number of coil units 30 disposed on the front side is greater than the number of coil units 30 disposed on the back side. It is understood that the number of the coil units 30 corresponding to the back of the hand is larger than the number of the coil units 30 corresponding to the palm.

When the patient wears the glove coil assembly 100, the hand fist and the hand bending can be formed, and different hand postures can be realized. In the process of changing the hand posture, the hand of the patient drives the palm shell 20 to deform. At the moment, the back of the hand of the patient is close to the palm, and then the front is driven to close to the back. The edge position of the front surface can be deformed and extends towards the back surface. In order to adapt to the posture change of the hand of the patient, the area of the front surface is larger than that of the back surface. Therefore, the number of the coil units 30 arranged on the front side is larger than that of the coil units 30 arranged on the back side, so that the method is suitable for the shape change when the front side is closed to the back side, and the scanned image of the palm part can be displayed more accurately.

According to the human body characteristics of the palm and the back of the hand, the area of the back of the hand is larger than that of the palm. The number of the coil units 30 corresponding to the back of the hand is greater than the number of the coil units 30 corresponding to the palm, so that the method can be better adapted to the characteristics of the hand of a human body, and further more accurately display the scanned image of the palm part.

In one embodiment, one of the finger housings 10 corresponds to one finger of the patient and to one of the coil units 30.

In one embodiment, the coil unit 30 corresponding to the finger case 10 is partially overlapped with the coil unit 30 corresponding to the front or back of the palm case 20.

The coil units 30 corresponding to the plurality of finger shells 10 are partially overlapped with the coil units 30 corresponding to the palm shell 20, so that the joint parts of the fingers and the palm of the patient can be scanned. Furthermore, the coil unit 30 corresponding to the finger case 10 is partially overlapped with the coil unit 30 corresponding to the palm case 20, so that the omission of the joint part can be avoided. Therefore, the coil unit 30 corresponding to the finger case 10 is partially overlapped with the coil unit 30 corresponding to the palm case 20, and the hand of the patient can be more comprehensively scanned.

In one embodiment, one of the coil units 30 is nested within one of the finger cases 10. A plurality of the coil units 30 are nested within the palm housing 20.

The finger case 10 and the palm case 20 may be made of soft materials such as cloth or leather, which is beneficial for the glove coil assembly 100 to adapt to different posture forms of the hand of the patient. The coil unit 30 is embedded in the finger case 10 and the palm case 20, and the coil unit 30 may be embedded in a soft material such as cloth or leather. The finger case 10 and the palm case 20 cover the coil unit 30, and prevent the coil unit 30 from directly contacting the patient.

One of the coil units 30, one of the finger cases 10, and one of the patient's fingers form a unique correspondence. A plurality of the coil units 30 are nested in the palm housing 20 and partially overlapped for scanning and detecting the palm of the patient. The scanning detection of the coil unit 30 is more targeted, and is more beneficial to the differential diagnosis of hand diseases in time.

In one embodiment, the glove coil assembly 100 may be sized according to ergonomic data, and can comprise a 90% population size to accommodate the different hand configurations of most patients.

In one embodiment, the palm housing 20 and the finger housing 10 are arc-shaped. It will be appreciated that the palm housing 20 and the finger housings 10 are contoured to accommodate the various postural changes of different patients.

In one embodiment, the finger casing 10 may be made of a flexible material, the palm casing 20 may be made of a hard material, and the coil unit provided to the finger casing 10 may be made of a flexible material or may be disposed around the long axis direction of the finger casing 10. The palm housing 20 is thus capable of holding the palm of the test subject, allowing the fingers of the test subject to alternate between different gestures.

In one embodiment, the palm housing 20 and the finger housing 10 are both flexible housings. The palm housing 20 and the finger housing 10 are made of flexible materials. The flexible material may be, for example, one of a leather material, a cloth material, or a plastic. Of course, the flexible base 300 may be made of a fabric such as cotton wool, chemical fiber, wool fabric, or fiber cloth, or a plastic such as soft glue. When the patient wears, through glove coil assembly 100 can make the patient hand more comfortable, and convenient to use more is favorable to the cooperation inspection, alleviates patient's mood.

Referring to fig. 5, in one embodiment, each of the coil units 30 includes a coil body 310, a tuning capacitor 320, a matching capacitor 330, a first matching inductor 340, a second matching inductor 350, a diode 360, and a preamplifier 370. The coil body 310 is bent in a set direction to form first and second connection ends opposite to each other. One end of the tuning capacitor 320 is connected to the first connection terminal. One end of the matching capacitor 330 is connected to the other end of the tuning capacitor 320. The other end of the matching capacitor 330 is connected to the second connection terminal.

One end of the first matching inductor 340 is connected to one end of the matching capacitor 330. One end of the second matching inductor 350 is connected to the other end of the matching capacitor 330. The positive terminal of the diode 360 is connected to the other end of the first matching inductor 340, and the negative terminal of the diode 360 is connected to the other end of the second matching inductor 350. A first input of the preamplifier 370 is connected to the positive terminal of the diode 360. A second input of the preamplifier 370 is connected to the negative terminal of the diode 360. The output of the preamplifier 370 outputs a radio frequency signal.

Inductive coupling phenomenon exists among the coil units 30, and when mutual magnetic flux changes, the magnetic flux changes of nearby radio frequency coils can be affected. When the coil units 30 are close to each other, they will affect each other, and the rf coil will deviate from the original resonance point and will not receive the desired resonance signal.

The matching capacitor 330, the first matching inductor 340, the second matching inductor 350 and the diode 360 form a regulation control circuit. When the coil unit 30 is in the non-receiving mode, it is necessary that the adjustment control circuit makes the coil unit 30 in the detuned state under the action of the detuning signal when the radio frequency transmitting coil transmits the radio frequency pulse. At this time, the coil unit 30 is in a detuned state, and a decoupling performance of the coil body 310 from the radio frequency transmission coil is achieved. The detuned state refers to a state in which the coil frequency deviates from the resonance frequency, and when the coil frequency is far away from the resonance point, the coil frequency will not be coupled with other coils to affect each other. When a tuning frequency needs to be selected, the capacitance of the tuning capacitor 320 is adjusted, so that the resonant frequency of the resonant circuit in which the tuning capacitor 320 is located can be adjusted, and the magnetic resonance signal is received and output through the output end of the preamplifier 370.

The coil body 310, the tuning capacitor 320, and the matching capacitor 330 form a resonant circuit, so as to receive the magnetic resonance signal. When the diode 360 is turned on, a parallel resonance is formed among the matching capacitor 330, the first matching inductor 340 and the second matching inductor 350 to form a detuned loop, so that the resonance frequency deviation of the resonance loop changes and is in a detuned state, a magnetic resonance signal cannot be received, and the phenomenon of coupling interference between coils is avoided.

Meanwhile, when the diode 360 is turned on, parallel resonance is formed among the matching capacitor 330, the first matching inductor 340 and the second matching inductor 350, so that a high-impedance state is formed between the resonant tank and the input terminal of the preamplifier 370, and a signal is isolated, thereby protecting the preamplifier 370 from being damaged.

When the diode 360 is not conducting, the coil body 310, the tuning capacitor 320, and the matching capacitor 330 form a resonant circuit, and receive the magnetic resonance signal and transmit the magnetic resonance signal to the preamplifier 370 for amplification. When the tuning frequency needs to be selected, the capacitance of the tuning capacitor 320 is adjusted to adjust the resonant frequency of the resonant tank, so as to receive the magnetic resonance signals with different frequencies, thereby outputting a radio frequency signal through the output end of the preamplifier 370. The radio frequency signal is transmitted to the data processing unit for processing, and medical imaging of the hand of the patient is achieved.

By adjusting the matching capacitor 330 when the diode 360 is non-conductive, the impedance of the resonant tank can be adjusted to the optimum source impedance at the input of the preamplifier 370.

Therefore, the coil unit 30 adopts a wider front-end decoupling circuit structure, and can provide wider and deeper front-end decoupling. The coil unit 30 adopts a wider front-end decoupling circuit structure, has larger tolerance on physical decoupling between units, can meet various over-coupling and under-coupling states, and has smaller influence on image quality. Thus, the glove coil assembly 100 can support scanning imaging of different hand types without being affected by unit to unit.

In one embodiment, the coil unit 30 may be carried on a flexible carrier, and a circuit board electrically connected to the coil unit 30 is integrally disposed on the coil unit 30. One of the coil units 30 corresponds to one circuit board and to one imaging unit. In the scanning process, the glove coil assembly 100 is worn on the hand of a patient, is soft and easy to fold and is relatively resistant to bending, and can be suitable for different hand postures.

Referring to fig. 6, in an embodiment, the coil body 310 includes a protection layer 311 and a metal layer 312, and the protection layer 311 covers the metal layer 312. Alternatively, the metal layer 312 may be a braided layer formed by braiding wires. Optionally, the metal wire may be a copper wire, a silver-plated copper wire or a tin-plated copper wire. The metal layer 312 is formed by weaving a plurality of metal wires in a staggered manner, is relatively bending-resistant, has high flexibility, and is easy to change various shapes, so that the metal layer is convenient to wear for scanning. The protective layer 311 may be made of soft protective materials such as leather and PU, and plays a role in protection. The protective layer 311 has the characteristic of soft attachment, can realize relatively attached wrapping at different positions, and has good bending resistance. In the scanning process, the coil body 310 is supported on the finger shell 10 and the palm shell 20 which are formed by flexible materials, and when the finger shell and the palm shell are worn on a human body, the finger shell and the palm shell are soft, easy to fold and relatively resistant to bending, so that the comfort of a patient is optimized, and the scanning process is simplified.

Considering that a smaller coil can obtain a better signal-to-noise ratio on the surface of the detected object, the signal-to-noise ratio drops sharply as the detection depth increases. In order to improve the signal-to-noise ratio of the coil surface and significantly improve the signal-to-noise ratio at the depth of the coil, in another embodiment, please refer to fig. 7, the coil unit 30 of the present application is formed by overlapping two layers of the coil body 310 to form a surface coil with a double-layer structure, and a plurality of tuning capacitors 320 are disposed at intervals between the inner layer and the outer layer of the coil body 310. The surface coil with the double-layer structure mainly comprises a double-layer LC resonance ring, a matching network, a phase shifter and an amplifier, wherein the double-layer LC resonance ring is formed by the coil body 310 in a surrounding mode. The double-layer surface coil has crossing and does not need to be additionally provided with an insulating structure because the coil body 310 is internally provided with the protective layer 311 for insulating. Optionally, in the process of transmitting the pulse by the transmitting coil, the matching network is used to adjust the impedance of the output port of the double-layer surface coil to about 50 Ω, so that the noise coefficient of the front-end amplifier is minimized, thereby obtaining the highest signal-to-noise ratio of the coil. In this case, the coil matching network, the phase shifter and the amplifier form a parallel resonant circuit, which blocks the current flow in the coil unit 30 and does not cause a phase shift in the output signal. Optionally, the matching network is implemented by a T-type network or a pi-type network.

It should be noted that when two coil units 30 are close to each other, the mutual inductance of the coil units 30 may split the resonant frequency thereof, and as a result of the splitting, the sensitivity of the coil unit 30 is lowered, and signals and noise may be transferred to the other coil unit 30 through the mutual inductance. In one embodiment, as shown in fig. 8a, two coil units 30 are surface coils with a double-layer structure formed by an inner layer and an outer layer, and both adopt an overlapping decoupling mode: there is a partial overlap between the outer layer of one of the coil units 30 and the outer layer of the other of the coil units 30, and there is no overlap between the inner layer of one of the coil units 30 and the outer layer of the other of the coil units 30, or there is no overlap between the outer layer of one of the coil units 30 and the inner layer of the other of the coil units 30. In another embodiment, as shown in fig. 8b, two coil units 30 are surface coils with a double-layer structure formed by an inner layer and an outer layer, and both adopt an inductive decoupling mode: the outer layer of one coil unit 30 and the outer layer of the other coil unit 30 are respectively connected with an inductance component, a gap exists between the two coil units 30, and the corresponding inductance components are overlapped. In another embodiment, as shown in fig. 8c, two coil units 30 are surface coils with a double-layer structure formed by an inner layer and an outer layer, and both adopt a capacitive decoupling mode: the outer layer of one coil unit 30 and the outer layer of the other coil unit 30 have a common edge, and a common capacitor is arranged on the common edge. In the embodiment of the present application, the signal-to-noise ratio is further improved by decoupling two adjacent coil units 30, and the quality of the acquired image is improved.

Alternatively, the coil body 310 may extend in a set direction such that the coil unit 30 forms a ring shape, a rectangular shape, a square shape, a butterfly shape, a saddle shape, or the like. The size of the area enclosed by the inner layer or the size of the area enclosed by the outer layer of the coil unit 30 can be adjusted to fit the size of the detection area.

In the description herein, references to the description of "some embodiments," "other embodiments," "desired embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.

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

Claims

1. A glove coil assembly, comprising:

a plurality of finger shells (10) arranged at intervals, wherein each finger shell (10) surrounds to form a finger containing space (110);

the palm shell (20) is respectively connected with the plurality of finger shells (10) arranged at intervals, the palm shell (20) surrounds to form a palm accommodating space (210), and the palm accommodating space (210) is communicated with the finger accommodating space (110);

a plurality of coil units (30), at least one of the coil units (30) being disposed on the finger case (10), and at least one of the coil units (30) being disposed on the palm case (20).

2. A glove coil assembly according to claim 1 wherein the finger casing (10) is angled from 0 to 180 degrees from the palm casing (20).

3. The glove coil assembly of claim 1 wherein the plurality of spaced apart finger casings (10) are not identical.

4. The glove coil assembly according to claim 1 wherein the palm housing (20) comprises oppositely disposed front and back sides, and the front and back sides are respectively provided with a plurality of the coil units (30).

5. A glove coil assembly according to claim 4 wherein the number of coil units (30) provided on the front side is greater than the number of coil units (30) provided on the back side.

6. The glove coil assembly according to claim 5 wherein the corresponding coil unit (30) of the finger case (10) partially overlaps the corresponding coil unit (30) of the front or back side of the palm case (20).

7. Glove coil assembly according to claim 1, wherein each of said coil units (30) comprises:

a coil body (310) bent in a set direction to form first and second connection ends opposite to each other;

a tuning capacitor (320), one end of the tuning capacitor (320) being connected to the first connection terminal;

a matching capacitor (330), wherein one end of the matching capacitor (330) is connected with the other end of the tuning capacitor (320), and the other end of the matching capacitor (330) is connected with the second connection end;

a first matching inductor (340), one end of the first matching inductor (340) being connected to one end of the matching capacitor (330);

a second matching inductor (350), one end of the second matching inductor (350) being connected to the other end of the matching capacitor (330);

a diode (360), wherein the positive terminal of the diode (360) is connected with the other end of the first matching inductor (340), and the negative terminal of the diode (360) is connected with the other end of the second matching inductor (350);

a preamplifier (370), wherein a first input end of the preamplifier (370) is connected with a positive end of the diode (360), a second input end of the preamplifier (370) is connected with a negative end of the diode (360), and an output end of the preamplifier (370) outputs a radio frequency signal.

8. Glove coil assembly according to claim 1, wherein the palm housing (20) and the finger housing (10) are flexible housings.

9. The glove coil assembly according to claim 1, wherein the coil unit (30) comprises a coil body (310), the coil body (310) comprises a protective layer (311) and a metal layer (312), the protective layer (311) is coated on the periphery of the metal layer (312), and the metal layer (312) is formed by weaving a plurality of metal wires.

10. The glove coil assembly of claim 9 wherein the coil unit (30) is a two-layer structure surface coil formed by overlapping two layers of the coil body (310).

11. A glove coil assembly, comprising:

the finger shell comprises a plurality of finger shells (10) arranged at intervals, wherein each finger shell (10) surrounds to form a finger containing space (110), and the finger shells can be bent along a set direction;

the palm shell (20) is respectively connected with the finger shells (10) arranged at intervals, the palm shell (20) comprises a front surface and a back surface which are oppositely arranged, the front surface and the back surface are matched to form a palm containing space (210), and the palm containing space (210) is communicated with the finger containing space (110);

a plurality of coil units (30) including at least one coil unit disposed on the palm housing (20) and at least one coil unit disposed on the front side or the back side.

12. A glove coil assembly according to claim 11, wherein the finger casing (10) is made of a flexible material, the palm casing (20) is made of a hard material, and the coil unit (30) provided to the finger casing (10) is made of a flexible material or is arranged around the long axis direction of the finger casing (10).