CN213210437U - Choke connector and magnetic resonance coil - Google Patents

Abstract

The utility model relates to a choke connector, including shell, choke and connecting piece. The shell allows the signal cable to be inserted, and the shell encloses to form a first cavity and a second cavity. The first cavity is used for accommodating a plurality of signal transmission lines in the signal cable. The choke is arranged in the second cavity and can be connected with the outer shielding layer of the signal cable. The connecting piece sets up in the one end of shell, and the connecting piece has wiring portion and connecting portion, and wiring portion is towards the wiring chamber, and wiring portion can be connected with many signal transmission lines in the signal cable, and connecting portion are used for being connected with outside electrical connection. The utility model discloses still relate to the magnetic resonance coil including above-mentioned choke connector. Above-mentioned choking connector and magnetic resonance coil, trapper and connecting piece are integrated as a whole, and the grafting distance of saving connector one end that can be fine for the distance between the trapper is exactly the distance between the choking connector, is convenient for design the interval between the trapper according to the operating condition of coil body.

Description

Choke connector and magnetic resonance coil

Technical Field

The utility model relates to a magnetic resonance technology field especially relates to a choke connector and magnetic resonance coil.

Background

With the development of magnetic resonance technology, the application of magnetic resonance detection in clinical medical treatment is more and more extensive. The magnetic resonance coil can cause potential safety hazards to surrounding circuits and electronic devices in the working process (especially under the conditions of strong magnetic field and high frequency working), wherein induced current is one of the induced currents; the current is too high, which causes higher charge concentration, and further forms higher potential difference locally, and power overload damages electrical elements or causes local heating to affect human safety. It is common practice to add a trap in the line to reject the common mode signal on the line and to reject the large current generated in the line. In order to meet the working frequency point of nuclear magnetism work, the distance between the wave traps on the coil or the communication line needs to be calculated, and particularly, the distance between the wave traps is required to be short when the high-field or high-field coil works. However, the plugging distance at one end of the connector in the conventional line occupies the distance between the wave traps and also needs to satisfy the usable effect of the cable, so the distance between the wave traps is often difficult to satisfy the design requirement due to the limitation.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a connector and a magnetic resonance coil with integrated choke function to solve the problem that the pitch of the trap in the conventional line is affected by the plugging distance and is difficult to meet the design requirement.

A choke connector comprising:

the signal cable is allowed to be inserted into the shell, the shell is surrounded with a first cavity and a second cavity which are communicated with each other, and the first cavity is used for accommodating a plurality of signal transmission lines in the signal cable;

the choke is arranged in the second cavity;

the connecting piece, set up in the one end of shell, the connecting piece has wiring portion and connecting portion, wiring portion orientation first cavity, wiring portion is connected with many signal transmission lines in the signal cable, connecting portion are used for with outside electrical connection.

In one embodiment, the first cavity is a choke cavity, the second cavity is a wiring cavity, and an electromagnetic shielding layer is arranged on the inner surface of the wiring cavity, wherein the electromagnetic shielding layer forms an annular electromagnetic shielding area.

In one embodiment, the housing has a connecting end and an insertion end, the insertion end allowing insertion of a signal cable, the connecting member being fixedly disposed at the connecting end; the choke chamber and the wiring chamber are arranged between the insertion end and the connection end along the extending direction of the signal cable.

In one embodiment, the insertion end allows a signal cable to be inserted in a direction forming a set angle with a connection direction of the connection end, and the set angle includes 30 °, 45 °, 60 °, 75 ° or 90 °.

In one embodiment, the housing includes a first housing and a second housing, the first housing and the second housing are separately disposed, the first housing and the second housing are detachably and fixedly connected, the first housing and the second housing enclose the first cavity and the second cavity when fixedly connected, and the connecting member is fixed when fixedly connected.

In one embodiment, the type of connection comprises a plug or a socket.

In one embodiment, the choke connector further comprises a signal cable having one end inserted into the housing; the choke comprises a wound trap, the signal cable being wound around the trap; the signal cable includes many signal transmission lines and outer shielding layer, outer shielding layer with the choke is connected, many signal transmission line respectively with wiring portion connects.

In one embodiment, the outer shield extends from the choke cavity to the wiring cavity; and an electromagnetic shielding layer is arranged on the inner surface of the wiring cavity and is communicated with the outer shielding layer.

A magnetic resonance coil comprising:

a coil body including one or more coil units;

the signal cable comprises one or more signal transmission lines, one end of each signal transmission line is electrically connected with the coil unit of the coil body, and the other end of each signal transmission line is connected with a choke connector;

the choke connector includes:

the signal transmission line comprises a shell, a first cavity and a second cavity, wherein the first cavity and the second cavity are communicated with each other;

the choke is arranged in the second cavity;

the connecting piece, set up in the other end of shell, the connecting piece has wiring portion and connecting portion, wiring portion orientation first cavity, many in wiring portion and the signal cable signal transmission line is connected, connecting portion are used for with outside electrical connection.

In one embodiment, the inner surface of the first cavity and/or the second cavity is provided with a metal shielding layer.

Above-mentioned connector and magnetic resonance coil pass through the shell with trapper and connecting piece and are integrated as a whole, and the design that integrates like this can be fine saves the grafting distance of connector one end for the distance between the trapper is the distance between the choking connector just. The utility model provides a connector, signal cable and magnetic resonance coil be convenient for the designer according to the operating frequency of coil body and actual condition design space between the trapper such as magnetic field intensity, and then effectively satisfy the common mode signal on the trapper rejection signal cable and restrain and produce the firing of heavy current to patient, the electric elements damage that has also avoided power overload to lead to simultaneously has reached the design requirement.

Drawings

Fig. 1 is a schematic side view of a choke connector according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a choke connector portion according to an embodiment of the present invention;

fig. 3 is a schematic view of an assembly structure of a housing and a choke according to an embodiment of the present invention;

fig. 4 is a schematic diagram of an explosion structure of a choke according to an embodiment of the present invention;

fig. 5 is a schematic view of an assembly structure of a choke and a signal cable according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a magnetic resonance system according to an embodiment of the present invention.

Wherein: 10. a choke connector; 100. a housing; 110. a choke chamber; 120. a wiring cavity; 130. a connecting end; 140. an insertion end; 150. a first housing; 160. a second housing; 170. an insertion hole; 180. a cable fixing member; 200. a choke; 210. a winding bracket; 220. an outer shield case; 230. a frequency modulation circuit board; 240. a structural platen; 300. a connecting member; 310. a wiring portion; 320. a connecting portion; 400. a signal cable; 410. a signal transmission line; 420. an outer shield layer; 430. a cable protective sheath; 500. an electromagnetic shielding layer; 60. A transmitting coil; 70. a receiving coil; 80. a hospital bed.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to 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", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Magnetic resonance devices generate high frequency, high field strength electromagnetic fields during operation. The high frequency, high field strength electromagnetic field induces large currents in the surrounding signal lines, which in turn creates safety hazards for the signal lines and the connected electrical components. The trap is used for inhibiting common-mode signals on the signal cable and generating large current, so that signal lines, electric elements and detected objects can be effectively protected. During the use of the wave trap, the distance between the wave traps is a key parameter for effectively suppressing common mode signals and large currents. The utility model provides a choke connector convenient to according to distance between the operating condition design trapper, simultaneously the utility model discloses still provide the magnetic resonance coil including above-mentioned choke connector.

As shown in fig. 1 to 3, an embodiment of the present invention provides a choke connector 10 having both the function of choking and connecting signal cables 400. Specifically, the choke connector 10 includes a housing 100, a choke 200, and a connecting member 300. The housing 100 serves as a supporting and protecting part of the entire choke connector 10 for integrating the choke 200 and the connecting member 300 into one body. The choke 200 can effectively suppress a common mode signal and a large current in the signal cable 400 connected thereto. The connector 300 as an intermediate enables connection between the signal cable 400 and a power supply source, or the connector 300 enables electrical connection between the signal cable 400 and a receiving part. One or both ends of the housing 100 allow the signal cable 400 to be inserted and the inserted signal cable 400 to be connected with the choke 200 and/or the connector. The casing 100 is a hollow structure, and the casing 100 encloses to form a second cavity (such as a choke cavity 110) and a first cavity (such as a wiring cavity 120), the wiring cavity 120 can accommodate a plurality of signal transmission lines 410 in the signal cable 400, the choke 200 is disposed in the choke cavity 110, and the choke 200 can be connected with an outer shielding layer 420 of the signal cable 400. The connector 300 is disposed at one end of the housing 100, the connector 300 has a wiring portion 310 and a connecting portion 320, the wiring portion 310 faces the wiring cavity 120, the wiring portion 310 can be connected to a plurality of signal transmission lines 410 in the signal cable 400, the connecting portion 320 can be connected to an externally-adapted connector (not shown), and the externally-adapted connector structure forms a mating structure with the connector 300 of the choke connector 10 to electrically connect the choke connector 10 to the outside. The signal transmission line 410 may include one or a combination of rf signal transmission line, dc signal transmission line, high frequency signal transmission line, and low frequency signal transmission line.

In the choke connector 10, the wave trap and the connecting member 300 are integrated into a whole through the housing 100, so that the plugging distance at one end of the connector can be saved due to the integrated design, and the distance between the wave traps is the distance between the choke connectors 10. The utility model provides a connector is convenient for the designer according to the operating frequency of coil body and actual working condition design space between the trapper such as magnetic field intensity, and then effectively satisfies the common mode signal on trapper rejection signal cable 400 and restrain and produce the firing of heavy current to patient, has also avoided the electric elements damage that power overload leads to simultaneously, has reached the designing requirement. Meanwhile, the choke connector 10 is more compact, small and reliable due to the integrated design, and stable transmission of magnetic resonance signals is guaranteed due to the connection between the connecting piece 300 and a signal line and the connection between the connecting piece 300 and another externally-adaptive connecting piece.

The connector 300 functions to realize connection between different signal cables 400. Alternatively, the connector 300 integrated with the choke 200 in the above embodiment is a plug-type connector 300 or a socket-type connector 300. It is understood that the plug-type connector 300 and the receptacle-type connector 300 are each a mating-type connector 300. When the plug type connector 300 is used in the above-described embodiment, it can be inserted into another socket type connector 300, thereby achieving communication between the signal cables 400. When the receptacle type connector 300 is used in the above-described embodiment, it can allow another plug type connector 300 to be inserted and also enable communication between the signal cables 400. Alternatively, the above-described embodiment may provide a complete set of types (plug type and receptacle type) of connectors 300. As shown in fig. 1-3, the following embodiments are described using a plug type connector 300 as an example, and the type of the connection portion 320 is a pin. It should be understood that the plug-type choke connector 10 in the embodiments described below can be the receptacle-type choke connector 10 only by means of adaptive modification, such as changing the pin-type connection portion 320 on the plug to the jack-type connection portion 320 on the receptacle.

The casing 100 can provide support for the installation of the connection member 300 and the choke 200, and can also effectively protect the choke 200 and the connection member 300. Alternatively, the housing 100 may be integrally formed or separately designed, as long as the mounting, supporting and protecting of the connecting member 300 and the choke 200 by the housing 100 can be achieved. In an embodiment of the present invention, as shown in fig. 1 to 3, the housing 100 includes a first casing 150 and a second casing 160, the first casing 150 and the second casing 160 are separately disposed, the first casing 150 and the second casing 160 are detachably and fixedly connected, a second cavity (such as the choke cavity 110) and a first cavity (such as the wiring cavity 120) are formed when the first casing 150 and the second casing 160 are fixedly connected, and a fixing connector 300 is fixedly connected between the first casing 150 and the second casing 160. The housing 100, which is provided separately, can facilitate the installation and fixation of the choke 200 and the connection member 300 in the housing 100, while allowing an operator to repair, maintain, and replace the connection member 300 or the choke 200 in the choke connector 10. In the actual assembling process, after the connecting member 300 and the choke 200 are respectively connected to the signal cable 400 in the external space, the whole is installed in the housing 100, which not only facilitates the operation, but also ensures the connection strength between the connecting member 300 and the choke 200 and the signal cable 400.

As an achievable way, as shown in fig. 1 to 3, the outer shape of the first casing 150 and the outer shape of the second casing 160 are in a plane symmetric structure, the first casing 150 and the second casing 160 can be directly attached together face to face, and the attaching surface of the first casing 150 and the second casing 160 is a central symmetric surface. Further, the first housing 150 and the second housing 160 are detachably and fixedly connected by clamping or screwing, and especially, the screwing can adjust the coupling force between the first housing 150 and the second housing 160 by adjusting the tightening degree of the screws. Specifically, a plurality of screw holes are formed in the first casing 150 at intervals, a plurality of screw holes are formed in the second casing 160 at corresponding intervals, and screws can be screwed into the screw holes after passing through the screw holes.

In an embodiment of the present invention, as shown in fig. 1 to 3, the housing 100 has a connecting end 130 and an inserting end 140, the inserting end 140 allows the signal cable 400 to be inserted, and the connecting member 300 is fixedly disposed at the connecting end 130; the choke chamber 110 and the wiring chamber 120 are disposed between the insertion end 140 and the connection end 130 in the extending direction of the signal cable 400. As one way of realization, an insertion hole 170 allowing insertion of the signal cable 400 is opened in the housing 100. When the housing 100 is of a unitary structure, the signal cable 400 may be inserted through the insertion hole 170. When the housing 100 is a separate structure, the first housing 150 and the second housing 160 can be respectively opened with a gap, and when the first housing 150 and the second housing 160 are assembled together, the two gaps surround to form the insertion hole 170. Further, a cable holder 180 is provided at the insertion end 140 of the housing 100. The cable holder 180 can enhance the connection strength between the signal cable 400 and the case 100, the choke 200, and the connector 300. Specifically, the cable fixture 180 is of the type of a snap fixture or a screw fixture. After the cable fixing member 180 fixes the signal cable 400, the signal cable 400 can bear large pulling force, and the situation that the signal cable 400 is separated from the choke connector 10 in the using process is avoided.

After being inserted into the housing 100 from the insertion end 140, the signal cable 400 extends through the choke chamber 110 in a certain extending direction to reach the wiring chamber 120. The connector 300 is mounted on the connection end 130 of the housing 100, and defines a connection direction as a direction in which the connector 300 is inserted into other externally-fitted connectors. Optionally, the insertion end 140 allows the signal cable 400 to be inserted in a direction parallel to or at another angle relative to the connection direction of the connection end 130. When the insertion end 140 allows the signal cable 400 to be inserted in a direction parallel to the connection direction of the connection end 130, the housing 100 is also formed in a bar or column shape as a whole. When the insertion end 140 allows the signal cable 400 to be inserted in a predetermined angle with respect to the connection direction of the connection end 130, such as a predetermined angle including 30 °, 45 °, 60 °, 75 ° or 90 °, the housing 100 is correspondingly V-shaped or L-shaped. As shown in fig. 1-3, in an embodiment of the present invention, the insertion end 140 allows the insertion direction of the signal cable 400 to be 90 ° to the connection direction of the connection end 130, so that the plugging of the choke connector 10 with other connectors is facilitated, and meanwhile, the large plastic deformation of the wire size cable due to its own gravity is avoided, thereby effectively protecting the signal cable 400.

Alternatively, the choke connector 10 in each of the above embodiments may be a single connector having only a connection function, and is used after being connected to the additional signal cable 400 each time it is used; or the choke connector 10 in the above embodiments may be pre-assembled with the signal cable 400. As shown in fig. 1 to 3, in an embodiment of the present invention, the choke connector 10 further includes a signal cable 400, and one end of the signal cable 400 is inserted into the housing 100. The choke 200 includes a wound type trap around which the signal cable 400 is wound. The signal cable 400 includes a plurality of signal transmission lines 410 and an outer shield layer 420, the outer shield layer 420 is connected to the choke 200, and the plurality of signal transmission lines 410 are connected to the wiring portion 310, respectively. The choke connector 10 including the signal cable 400 as a whole can be applied to a signal cable or a magnetic resonance coil, and has the advantages of firm structure and stable performance, and the winding type trap is widely used and has high inductance. As shown in fig. 4-5, the winding type wave trap structure portion includes, as one implementation, a winding support 210, an outer shield 220, a tuning circuit board 230, and a structure press 240. Under the action of the fm circuit board 230 and the outer shield 220, a basic structure of the winding trap is formed, the fm circuit board 230 is electrically connected to the outer shield 420 of the signal cable 400 by welding, and a parallel resonant circuit is formed by the outer shield 420 to achieve a choke function. In other embodiments of the present invention, the wave trap can be of other types designed according to actual working conditions, and the wave trap is connected to the signal cable 400.

As shown in fig. 2 to 3, the signal cable 400 is inserted into the housing 100 through the insertion hole 170 and then wound around the trap, and the outer shield 420 of the signal cable 400 is electrically connected to the trap. The signal cable 400 wound around the trap is accommodated in the choke chamber 110 together with the trap, the signal cable 400 bypassing the trap further extends into the wiring chamber 120, and the signal cable 400 extending into the wiring chamber 120 is a signal transmission line 410 in the form of a scattered line. The signal cable 400 in this embodiment is a radio frequency cable type, the signal cable 400 needs to electromagnetically shield the signal transmission line 410 in order to prevent radio frequency leakage, the electromagnetic shielding on the signal cable 400 is usually realized by an outer shielding layer 420, and the outer shielding layer 420 is generally a braided metal wire. The metal wire type outer shield layer 420 is damaged at the position of the signal transmission line 410 in a scattered line form and cannot play a role of shielding. In an embodiment of the present invention, the inner surface of the wiring chamber 120 is provided with an electromagnetic shielding layer 500, and the electromagnetic shielding layer 500 forms an annular electromagnetic shielding region. The electromagnetic shielding layer 500 in the wiring cavity 120 can effectively shield the signal transmission line 410 in the form of a scattered line. In an implementation, the electromagnetic shielding layer 500 is a metal plating layer on the inner surface of the wiring cavity 120, such as copper plating, nickel plating, silver plating, titanium plating, or other conductive material. As another realizable manner, the material of the electromagnetic shielding layer 500 may also be graphene. Meanwhile, in order to avoid the mutual influence between the electromagnetic shielding of the electromagnetic shielding layer 500 and the functional shielding of the wave trap, the electromagnetic shielding is only performed in the wiring cavity 120, and the shielding at the outer shielding case 220 of the wave trap is eliminated.

Further, as shown in fig. 2-3, the outer shielding layer 420 extends from the choke chamber 110 to the wiring chamber 120, and the electromagnetic shielding layer 500 inside the wiring chamber 120 is in conduction with the outer shielding layer 420. The electromagnetic shielding layer 500 is conducted with the outer shielding layer 420 through the structural design, the shielding electrical connection is realized, the 360-degree shielding requirement of electromagnetic shielding is met, the radio-frequency signal can be better protected, and the interference is avoided. It can be understood that when the type of the connector 300 is a plug, a similar electromagnetic shielding structure can be designed at the socket end, so that the cascading property of the wave trap with a set distance and a good choking effect are realized; and vice versa. In an embodiment of the present invention, the signal transmission lines 410 extending into the wiring cavity 120 in a scattered form are a plurality of strands, and the plurality of strands of signal transmission lines 410 are connected to the wiring portions 310 of the connecting members 300 by welding or screwing, respectively. An electromagnetic shielding layer 500, such as a cylindrical metal ring, may be disposed on the outer surface of each signal transmission line 410. It is understood that the exterior of signal cable 400 has a cable protective sheath 430.

An embodiment of the present invention further provides a magnetic resonance coil, including a coil body, a signal cable 400, and a choke connector 10. The coil body includes one or more coil units. The signal cable 400 includes one or more signal transmission lines 410, and one end of the signal transmission line 410 is electrically connected to the coil unit of the coil body, and the other end of the signal transmission line 410 is connected to a choke connector 10. The choke connector 10 includes a housing 100, a choke 200, and a connecting member 300. The housing 100 forms a first cavity (e.g., a wiring cavity 120) and a second cavity (e.g., a choke cavity 110) communicating with each other, and one end of the housing 100 is provided with an insertion hole through which the other end of the signal transmission line 410 passes into the first cavity. The choke 200 is disposed in the second cavity. The connector 300 is disposed at the other end of the housing 100, the connector 100 has a wire connection portion 310 and a connection portion 320, the wire connection portion 210 faces the first cavity, the wire connection portion 310 is connected to a plurality of signal transmission lines 410 in the signal cable 400, and the connection portion 320 is used for connecting with an externally adapted connector. Further, the inner surface of the first cavity and/or the second cavity is provided with a metal shielding layer. It will be appreciated that the magnetic resonance coil may be a receive coil or a local transmit coil, which may be employed in a high field magnetic resonance system.

The magnetic resonance coil provided by the embodiment integrates the wave trap and the connecting member 300 into a whole through the housing 100, so that the integrated design can well save the plugging distance at one end of the connector, and the distance between the wave traps is the distance between the choke connectors 10. The utility model provides a magnetic resonance coil is convenient for the designer according to the operating frequency of coil body and the interval between the actual working condition design trapper such as magnetic field intensity, and then effectively satisfies the common mode signal on trapper suppression signal cable 400 and restrain and produce the firing of heavy current to patient, has also avoided the electric elements damage that power overload leads to simultaneously, has reached the designing requirement.

The utility model provides a choke connector 10 and magnetic resonance coil can effectively save design and installation space, realizes magnetic resonance coil's bending effect better and promote by the user experience of detection person, very big improvement safe indicate, realized 360 cable shielding, better assurance signal transmission's effect.

As shown in fig. 6, a magnetic resonance system is provided for an embodiment of the present invention. The magnetic resonance system includes: a transmitting coil 60, a receiving coil 70 and a patient bed 80 carrying the receiving coil 70. In this embodiment, the transmit coil 60 is configured as a birdcage coil that encloses a scan volume; the bed plate is moved into the scanning cavity; the sickbed 80 is provided with a connector which is arranged as a socket structure; the receiving coil 70 is plugged into the socket structure through the aforementioned signal cable 400 and the choke connector 10 to electrically connect the receiving coil 70 with the patient's bed 80.

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 represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A choke connector, comprising:

the signal cable is allowed to be inserted into the shell, the shell is surrounded with a first cavity and a second cavity which are communicated with each other, and the first cavity is used for accommodating a plurality of signal transmission lines in the signal cable;

the choke is arranged in the second cavity;

the connecting piece, set up in the one end of shell, the connecting piece has wiring portion and connecting portion, wiring portion orientation first cavity, wiring portion is connected with many signal transmission lines in the signal cable, connecting portion are used for with outside electrical connection.

2. The choke connector according to claim 1, wherein the first cavity is a choke cavity, the second cavity is a wiring cavity, and an electromagnetic shielding layer is provided on an inner surface of the wiring cavity, the electromagnetic shielding layer forming an annular electromagnetic shielding region.

3. The choke connector according to claim 2, wherein the housing has a connection end and an insertion end allowing insertion of the signal cable, the connection member being fixedly provided at the connection end; the choke chamber and the wiring chamber are arranged between the insertion end and the connection end along the extending direction of the signal cable.

4. The choke connector of claim 3, wherein the insertion end allows a signal cable to be inserted in a direction at a set angle to a connection direction of the connection ends, the set angle comprising 30 °, 45 °, 60 °, 75 °, or 90 °.

5. The choke connector according to claim 1, wherein the housing includes a first housing and a second housing, the first housing and the second housing are separately disposed, the first housing and the second housing are detachably and fixedly connected, the first housing and the second housing enclose the first cavity and the second cavity when fixedly connected, and the first housing and the second housing fix the connecting member when fixedly connected.

6. A choke connector according to claim 1, characterized in that the type of the connection part comprises a plug or a socket.

7. The choke connector according to any one of claims 2 to 4, further comprising a signal cable having one end inserted into the housing; the choke comprises a wound trap, the signal cable being wound around the trap; the signal cable includes many signal transmission lines and outer shielding layer, outer shielding layer with the choke is connected, many signal transmission line respectively with wiring portion connects.

8. The choke connector of claim 7, wherein the outer shield extends from the choke cavity to the wiring cavity; and an electromagnetic shielding layer is arranged on the inner surface of the wiring cavity and is communicated with the outer shielding layer.

9. A magnetic resonance coil, comprising:

a coil body including one or more coil units;

the signal cable comprises one or more signal transmission lines, one end of each signal transmission line is electrically connected with the coil unit of the coil body, and the other end of each signal transmission line is connected with a choke connector;

the choke connector includes:

the signal transmission line comprises a shell, a first cavity and a second cavity, wherein the first cavity and the second cavity are communicated with each other;

the choke is arranged in the second cavity;

the connecting piece, set up in the other end of shell, the connecting piece has wiring portion and connecting portion, wiring portion orientation first cavity, many in wiring portion and the signal cable signal transmission line is connected, connecting portion are used for with outside electrical connection.

10. The magnetic resonance coil of claim 9, wherein an inner surface of the first and/or second cavity is provided with a metallic shielding layer.

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