CN218960730U - Coil device and medical imaging apparatus - Google Patents

Abstract

The application discloses a coil device and a medical imaging apparatus. The coil device includes: a first arcuate coil including two oppositely disposed first ends; the second arc-shaped coil comprises two second end parts which are in one-to-one correspondence with the two first end parts; the two rotary opening and closing mechanisms are respectively arranged between the corresponding first end part and the corresponding second end part, and enable the corresponding first end part and second end part to be capable of opening and closing and relatively rotating. Therefore, the opening position of the coil device can be selectively set, so that the condition that the human body part is placed in the coil device with a small moving distance under the condition that the first arc-shaped coil and the second arc-shaped coil are not completely separated is met, and pain caused by movement of a patient is reduced.

Description

Coil device and medical imaging apparatus

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a coil device and medical imaging equipment.

Background

Magnetic resonance imaging, also called mri, has been widely used in large and medium hospitals, and is mainly an imaging device for medical examination, which is manufactured by using the principle of magnetic resonance.

In the clinical application of MRI (magnetic resonance imaging) examination techniques, it is generally necessary to place the examined region of a patient in a dedicated coil device, so as to detect radio frequency signals radiated from hydrogen nuclei of water molecules of the examined region by the coil device, thereby realizing tissue imaging of the examined region.

Specifically, taking a special knee coil device as an example, in an MRI (magnetic resonance imaging) examination process, a knee to be detected of a patient is placed in the knee coil device, and the two lower limbs straighten. The traditional knee coil device generally adopts an integral separation or single-side opening-closing type structure, wherein the integral separation type structure needs to integrally detach the upper half part of the coil when a patient places or takes out the knee each time, and the coil is easy to fall down due to complex operation and damage caused by temporarily searching the placement position. The open and close position of the single-sided open and close coil can be positioned on the left side, right side or above the coil device, and the shortest displacement can not be realized when the knee is placed in the coil by a patient. For example, when the opening and closing of the coil device is positioned at the left side of the coil device, the minimum displacement can be satisfied when the knee of the patient is put in from the left side, but when the knee of the patient needs to be put in from the right side, the displacement is greatly increased, and the opening and closing of the coil is positioned at the right side of the coil device, so that the principle is the same; when the opening and closing of the coil device is above the coil device, the distance is equivalent when the patient is put into the knee from the left and right, but the minimum displacement is not satisfied.

Disclosure of Invention

In view of the above, the present utility model provides a coil device and a medical imaging apparatus, in which an opening position of the coil device can be selectively set to satisfy the operation requirements of placing a human body part in the coil device with a small moving distance in a state where a first arc-shaped coil and a second arc-shaped coil are not separated and performing maintenance replacement of the coil device in a state where the first arc-shaped coil and the second arc-shaped coil are separated, thereby facilitating the operation of medical staff, reducing pain caused by the movement of a patient, and facilitating the improvement of maintenance efficiency.

In a first aspect of the present utility model, there is provided a coil apparatus for use in a medical imaging device, the coil apparatus comprising: a first arcuate coil including two oppositely disposed first ends; the second arc-shaped coil comprises two second end parts which are in one-to-one correspondence with the two first end parts; the two rotary opening and closing mechanisms are respectively arranged between the corresponding first end part and the corresponding second end part, and enable the corresponding first end part and second end part to be capable of opening and closing and relatively rotating.

Further, when one of the two rotary opening and closing mechanisms makes the corresponding first end and the second end in a separated state, the other of the two rotary opening and closing mechanisms makes the corresponding first end and the second end in a rotatable connection state.

Further, the rotary opening and closing mechanism comprises a rotating shaft and at least two connecting parts, the at least two connecting parts are distributed on the first end part along the axial direction of the rotating shaft, and the rotating shaft is arranged between the two adjacent connecting parts; the holding tank has been seted up to the second tip, and the holding tank includes the pivot groove with pivot looks adaptation and the mounting groove with connecting portion looks adaptation, and the mounting groove communicates with the surface of second arc coil in order dodging connecting portion in rotatory in-process, and rotatory opening and shutting mechanism can hold in the holding tank and break away from the holding tank, the pivot groove can be right the radial direction motion of pivot is spacing.

Further, the pivoting groove comprises narrow opening sections distributed along the depth direction of the pivoting groove and adjacent to the notch and expansion sections adjacent to the groove bottom, the cross section width of the narrow opening sections is smaller than that of the expansion sections, the peripheral side of the rotating shaft comprises limiting surfaces which are oppositely arranged and transition surfaces which are located between the limiting surfaces, the distance between the limiting surfaces is smaller than that of the narrow opening sections, and the distance between the transition surfaces is larger than that of the narrow opening sections and smaller than or equal to that of the expansion sections.

Further, the rotary opening and closing mechanism further comprises an arc-shaped sliding block, wherein the arc-shaped sliding block is arranged on one side of the connecting part, facing the rotating shaft, and is positioned between the rotating shaft and the first end part; an arc chute matched with the arc slide block is arranged on the inner wall of the mounting groove connected with the pivoting groove, and the arc slide block and the arc chute are matched to limit radial movement in the rotating process of the rotating shaft.

Further, the coil apparatus further includes: the locking mechanism is arranged on the first arc-shaped coil and corresponds to the rotary opening and closing mechanism, and the locking mechanism is used for locking the rotary opening and closing mechanism in the accommodating groove.

Further, the locking mechanism includes: the trigger piece and the locking piece that the transmission is connected are provided with the guide way coaxial with the pivot on the rotatory switching mechanism, and the locking piece slidable sets up in the guide way, and the spacing groove with locking piece looks adaptation has been seted up to the lateral wall of holding tank, and the trigger piece is used for driving the locking piece and switches in locking position and open and shut the position switch, and locking position is the position that the locking piece inserted spacing groove, and open and shut the position and be the position that the locking piece breaks away from spacing groove.

Further, the coil apparatus further includes: the first electric connection piece is arranged on the two first end parts, and the second electric connection piece is arranged on the two second end parts, so that the first electric connection piece and the corresponding second electric connection piece can be electrically connected.

Further, the first electrical connector comprises a pin arranged at the first end part; the second electric connection piece comprises a metal elastic piece, the second end part is provided with a slot corresponding to the contact pin, and the metal elastic piece is positioned in the slot.

Further, the second electrical connector comprises a pin arranged at the first end part; the first electric connection piece comprises a metal elastic piece, a slot corresponding to the contact pin is arranged at the first end part, and the metal elastic piece is positioned in the slot.

In a second aspect of the utility model, a medical imaging apparatus is provided, comprising the coil arrangement of any of the first aspects.

The embodiment of the utility model provides a coil device and medical imaging equipment, the coil device comprises: the device comprises a first arc-shaped coil, a second arc-shaped coil and two rotary opening and closing mechanisms. The first arc-shaped coil comprises two first end parts, the second arc-shaped coil comprises two second end parts corresponding to the two first end parts one by one, and the two rotary opening and closing mechanisms are arranged between the corresponding first end parts and the corresponding second end parts and enable the corresponding first end parts and the corresponding second end parts to be capable of opening and closing and relatively rotating. Therefore, the coil device can be switched back and forth between an open-loop state and a closed-loop state, and through the arrangement of the two rotary opening and closing mechanisms, the opening position of the coil device can be selectively set when the coil device is in the open-loop state, so that the condition that the human body part is placed in the coil device at a smaller moving distance in the state that the first arc-shaped coil and the second arc-shaped coil are not separated is met, and pain caused by movement of a patient is reduced.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. Wherein:

fig. 1 shows a schematic structural view of a coil device according to an alternative embodiment of the present utility model from one perspective;

FIG. 2 shows an enlarged partial schematic view of the embodiment of FIG. 1;

FIG. 3 shows a schematic structural view of the embodiment of FIG. 1 from another perspective;

FIG. 4 shows a cross-sectional view of a coil assembly with two rotary opening and closing mechanisms in a first position and a third position, respectively, provided by an alternative embodiment of the present utility model;

FIG. 5 illustrates a partial cross-sectional view of a coil assembly with a rotary opening and closing mechanism in a third position provided by an alternative embodiment of the present utility model;

fig. 6 shows a partial cross-sectional view of a coil arrangement with a rotary opening and closing mechanism in a second position, as provided by an alternative embodiment of the utility model.

Wherein, the correspondence between the reference numerals and the component names in fig. 1 to 6 is:

100 coil device, 110 first arc coil, 111 first end, 120 second arc coil, 121 second end, 122 holding tank, 123 pivot groove, 1231 narrow mouth section, 1232 expanded section, 124 mounting groove, 125 arc spout, 126 slot, 127 spacing groove, 130 rotatory opening and closing mechanism, 131 pivot, 1311 spacing face, 1312 transition face, 132 connecting portion, 133 arc slider, 140 locking mechanism, 141 trigger piece, 142 locking piece, 150 contact pin.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.

A coil apparatus 100 and a medical imaging device provided according to some embodiments of the present utility model are described below with reference to fig. 1 to 6. The coil arrangement 100 is applied to a medical imaging apparatus, which may be a magnetic resonance imaging apparatus. The coil device 100 may be a receiving coil or a transmitting/receiving integrated coil. The coil device 100 may be used in, but is not limited to, the head, neck, elbow, wrist, knee, ankle, etc. of a human body.

Specifically, the operating principle of the magnetic resonance imaging apparatus is as follows: since 70% of the human body is composed of water, each water molecule has two hydrogen nuclei, i.e., protons. When a human body is placed in a strong magnetic field, the spins of a part of hydrogen nuclei within the human body orient in the direction of the strong magnetic field. At this time, when the electromagnetic wave having a resonance frequency excites the human body, the spin of the hydrogen nuclei oriented in the direction of the strong magnetic field is reversed, and after the radio frequency electromagnetic wave is cancelled, the hydrogen nuclei whose spin is rotated are restored to the original state, that is, to the state in which the spin is oriented in the direction of the strong magnetic field, and at the same time, electromagnetic radiation having a specific frequency, that is, a resonance signal is emitted. The intensity of the resonance signal is related to the density of hydrogen nuclei, and the water content of various tissues in the human body is different, namely, the densities of the hydrogen nuclei are different, so that the radio frequency signals radiated by the hydrogen nuclei can be deeply detected by using a coil device, the various tissues can be separated, and then the tissue distribution image of the human body is obtained by a computer technology. Further, if an appropriate gradient magnetic field is superimposed on a uniform strong magnetic field, the spatial resolution of the image can be obtained.

In the embodiment of the first aspect of the present utility model, a coil apparatus 100 is provided, and by providing two rotary opening and closing mechanisms 130, the opening position of the coil apparatus 100 can be selectively opened according to the position of the human body part, so as to satisfy the condition that the human body part is placed on the coil apparatus 100 with a smaller moving distance in a state that the first arc-shaped coil 110 and the second arc-shaped coil 120 are not separated, and further reduce the pain caused by the movement of the patient.

It should be understood that the human body part mentioned in the embodiments of the present utility model may be, but not limited to, implemented as a human knee, for example, the human body part may also be implemented as other specific parts such as a knee joint, an elbow joint or a neck, which will not be repeated herein.

Specifically, as shown in fig. 1, 2 and 3, a coil apparatus 100 according to an embodiment of the first aspect of the present utility model includes: a first arcuate coil 110, a second arcuate coil 120, and two rotary opening and closing mechanisms 130. The first arc-shaped coil 110 includes two opposite first ends 111, and the second arc-shaped coil 120 includes two second ends 121 corresponding to the two first ends 111 one by one, and it is understood that each first end 111 of the first arc-shaped coil 110 is connected to the corresponding second end 121 of the second arc-shaped coil 120, so that the first arc-shaped coil 110 and the second arc-shaped coil 120 form a closed loop structure. The rotary opening and closing mechanism 130 is disposed between the corresponding first end 111 and second end 121, respectively, and enables the corresponding first end 111 and second end 121 to open and close and relatively rotate.

That is, the rotary opening and closing mechanism 130 is capable of bringing the corresponding first end 111 and second end 121 into a mutually separated state, a closed state, or a rotationally connected state according to the use requirement, wherein the corresponding first end 111 and second end 121 are in a rotationally connected state by the rotary opening and closing mechanism 130, which is a relative rotation based on the two closed states. I.e. it can be understood that: the rotary opening and closing mechanism 130 includes a first position where the corresponding first end 111 and second end 121 are separated from each other, a second position where the corresponding first end 111 and second end 121 are closed and electrically connected to each other, and a third position where the corresponding first end 111 and second end 121 are rotatably connected to each other. The rotary opening and closing mechanism 130 is further operated when the corresponding first end 111 and second end 121 are in the closed state to be in the second position, and when the rotary opening and closing mechanism 130 is in the separated state, the other rotary opening and closing mechanism 130 enables the first end 111 and the second end 121 to be in the third position.

Therefore, according to the coil device 100 provided by the embodiment of the utility model, the positions of the two rotating opening and closing mechanisms 130 can be selectively set according to specific operation requirements, so that the first end 111 and the second end 121 corresponding to each rotating opening and closing mechanism 130 are in a separated state, a closed state or a relative rotation state, and the human body part is placed on the coil device 100 with a smaller moving distance, thereby expanding the application range of the coil device 100 and simplifying the work flow. In addition, the rotary opening and closing mechanism 130 in the present embodiment can be that the first end 111 and the second end 121 are in a separated state, so that maintenance of the first arc-shaped coil 110 and the second arc-shaped coil 120 is facilitated.

Wherein, when one of the two rotary opening and closing mechanisms 130 makes the corresponding first end 111 and second end 121 in a separated state, the other of the two rotary opening and closing mechanisms 130 makes the corresponding first end 111 and second end 121 in a rotatably connected state.

The coil device 100 provided in this embodiment of the present application includes two rotating opening and closing mechanisms 130, therefore, the relative positions of the body part to be scanned and the coil device 100 can be combined, the rotating opening and closing mechanism 130 on one side close to the body part is selectively set to the first position, that is, the rotating opening and closing mechanism 130 makes the corresponding first end 111 and second end 121 separate from each other, the rotating opening and closing mechanism 130 on one side far away from the body part is located at the third position, and then the first arc-shaped coil 110 and the second arc-shaped coil 120 are in the connected state, so that the body part is placed in the coil device 100 at a shorter moving distance, thereby alleviating the pain caused by the movement of the patient, reducing the workflow, freeing the satisfaction degree of the medical staff, being beneficial to improving the using satisfaction degree of the medical staff, and being capable of avoiding the possibility of dropping the coil device 100, being beneficial to improving the service life of the coil device 100.

Further, the rotary opening and closing mechanism 130 at the third position is further used for preventing the first arc-shaped coil 110 and the second arc-shaped coil 120 from being separated, that is, the rotary opening and closing mechanism 130 at the third position can ensure that the first arc-shaped coil 110 and the second arc-shaped coil 120 are rotationally connected and cannot be separated, so that safety and reliability in the rotation process of the first arc-shaped coil 110 and the second arc-shaped coil 120 are improved, the first arc-shaped coil 110 and the second arc-shaped coil 120 which are rotationally connected are prevented from falling off to be damaged, and further safety and reliability in use of the coil device 100 are improved.

Wherein, when one of the two rotary opening and closing mechanisms 130 makes the corresponding first end 111 and the second end 121 in a separated state, and the other rotary opening and closing mechanism 130 makes the corresponding first end 111 and the corresponding second end 121 in a rotatable connection state, that is, when the two rotary opening and closing mechanisms 130 are respectively in a first position and a third position, the first end 111 and the second end 121 which are rotationally connected can rotate in a direction away from each other so as to drive the first end 111 and the second end 121 which are separately arranged to move in a direction away from each other, thereby increasing the opening of the coil device 100; the first end 111 and the second end 121 which are rotatably connected can rotate in a direction approaching each other to drive the first end 111 and the second end 121 which are separately disposed to move in a direction approaching each other, thereby reducing the opening of the coil device 100.

When the two rotary opening and closing mechanisms 130 make the corresponding first end 111 and second end 121 in a separated state, that is, when the two rotary opening and closing mechanisms 130 are in the first position, the coil device 100 is in an open loop state, and the first arc-shaped coil 110 and the second arc-shaped coil 120 are separately arranged, at this time, the first arc-shaped coil 110 and the second arc-shaped coil 120 which are separately arranged are convenient to maintain and replace, which is beneficial to improving maintenance efficiency and saving replacement cost.

When the two rotary opening and closing mechanisms 130 make the corresponding first end 111 and second end 121 in the closed state, that is, when the two rotary opening and closing mechanisms 130 are in the second position, the coil device 100 is in the closed loop state, so that the medical imaging apparatus including the coil device 100 can deeply detect the radio frequency signals radiated by the hydrogen nuclei of the human body part to be scanned in the coil device 100 through the coil device 100, and then obtain the tissue distribution image of the human body part through the computer technology.

In the above embodiment, as shown in fig. 4, the two rotary opening and closing mechanisms 130 are arranged opposite to each other along the first direction, wherein the first direction may be the left-right direction of the coil apparatus 100, as shown by the arrow X in fig. 4, i.e., the two rotary opening and closing mechanisms 130 are located on the left and right sides of the coil apparatus 100 as shown in fig. 4. Thus, when the body part to be detected is located on the left side of the coil apparatus 100, the rotary opening and closing mechanism 130 on the left side of the coil apparatus 100 may be placed in the first position such that the first end 111 and the second end 121 on the left side are in a separated state, and the rotary opening and closing mechanism 130 on the right side is placed in the third position such that the first end 111 and the second end 121 on the right side are rotatably connected, and at this time, the coil apparatus 100 is placed in an open-loop state, so that the body part on the left side of the coil apparatus 100 can be quickly and conveniently placed in the coil apparatus 100 by the rotary opening and closing mechanism 130 on the left side in the first position. Compared with the opening of the coil device 100 positioned above and on the right side, the moving distance of the human body part in the coil device 100 is reduced, the working efficiency is improved, the moving range of a patient can be reduced, the pain caused by the movement of the patient is reduced, and the comfort of the patient is improved.

It can be understood that when the body part to be detected is located on the right side of the coil apparatus 100, the rotary opening and closing mechanism 130 of the coil apparatus 100 located on the right side may be located at the first position, and the rotary opening and closing mechanism 130 located on the left side is located at the third position, so that the coil apparatus 100 is in an open loop state, and the principle thereof is the same as that of the body part located on the left side of the coil apparatus 100, and will not be described in detail herein.

In some possible embodiments of the present utility model, as shown in fig. 1, 2 and 3, the rotary opening and closing mechanism 130 includes a rotating shaft 131 and at least two connecting portions 132, the at least two connecting portions 132 are distributed on the first end portion 111 along an axial direction of the rotating shaft 131, and the rotating shaft 131 is disposed between two adjacent connecting portions 132.

The number of the connecting parts 132 may be two, three, or other numbers, and different numbers of the connecting parts 132 can provide different strength support and fixation for the rotating shaft 131. It will be appreciated that the greater the number of the connection portions 132, the more stable the support provided to the rotary shaft 131, and the more the strength of the rotary shaft can be improved. Specifically, as shown in fig. 1 and 3, the number of the connecting portions 132 is three, thereby playing a role in reinforcing and fixing the rotating shaft 131, being beneficial to improving the strength of the rotating shaft 131 and further improving the service life of the rotary opening and closing mechanism 130. Specifically, the connection portion 132 may be fixed to the first end portion 111 of the first arc-shaped coil 110 by a fixing device, or the connection portion 132 may be connected to the first end portion 111 in an integrally formed structure with the first end portion 111. Different arrangement modes of the connecting portion 132 can meet the requirements of different processing methods of the connecting portion 132 and the first arc-shaped coil 110.

Wherein, the second end 121 is provided with a holding groove 122, the holding groove 122 includes a pivoting groove 123 adapted to the rotating shaft 131 and a mounting groove 124 adapted to the connecting portion 132, the mounting groove 124 is communicated with the outer surface of the second arc-shaped coil 120 to avoid the connecting portion 132 in the rotating process, the rotating opening and closing mechanism 130 can be held in the holding groove 122 and disengaged from the holding groove 122, and the pivoting groove 123 can limit the radial movement of the rotating shaft 131.

Wherein the pivot slot 123 is adapted to the rotation shaft 131, it can be understood that when the rotary opening and closing mechanism 130 is in the second position, the rotation shaft 131 can be accommodated in the pivot slot 123, and when the rotary opening and closing mechanism 130 is in the third position, the rotation shaft 131 can rotate in the pivot slot 123; wherein the mounting groove 124 is adapted to the connecting portion 132, it is understood that when the rotary opening and closing mechanism 130 is in the second position, the connecting portion 132 may be received in the mounting groove 124, and when the rotary opening and closing mechanism 130 is in the third position, the connecting portion 132 may rotate in the mounting groove 124 or a portion of the connecting portion 132 may rotate to be located outside the mounting groove 124. The pivot groove 123 is capable of limiting movement of the shaft 131 in a radial direction at least in part of the rotation angle of the shaft 131, which is understood herein to be a rotation angle other than the notch position of the pivot groove.

Thus, when the rotary opening and closing mechanism 130 is in the first position, the rotary opening and closing mechanism 130 is disengaged from the accommodating groove 122, and the first end 111 and the second end 121 corresponding to the rotary opening and closing mechanism 130 are separated, so that the coil apparatus 100 is in the open loop configuration. When the rotary opening and closing mechanism 130 is at the second position, the rotary opening and closing mechanism 130 is accommodated in the accommodating groove 122, that is, the rotating shaft 131 is accommodated in the pivot groove 123, the connecting portion 132 is accommodated in the mounting groove 124, the first end 111 and the second end 121 corresponding to the rotary opening and closing mechanism 130 are buckled together, and the first end 111 and the second end 121 are in a closed state. When the rotary opening and closing mechanism 130 is at the third position, since the mounting groove 124 communicates with the outer surface of the second arc-shaped coil 120 to avoid the connection portion 132 during rotation, when the rotation shaft 131 rotates in the pivot groove 123, the connection portion 132 can rotate inside and/or outside the mounting groove 124, thereby driving the first end portion 111 to rotate relative to the second end portion 121, and it can be appreciated that in this case, the first end portion 111 and the second end portion 121 corresponding to the other rotary opening and closing mechanism 130 are separated from each other to ensure that the first arc-shaped coil 110 has a rotation space relative to the second arc-shaped coil 120.

In the above-described embodiment, as shown in fig. 2 and 4, the pivoting groove 123 includes the slit sections 1231 distributed in the depth direction of the pivoting groove 123 and adjacent to the notch and the expanded sections 1232 adjacent to the groove bottom, the cross-sectional width of the slit sections 1231 is smaller than the cross-sectional width of the expanded sections 1232, the peripheral side of the rotation shaft 131 includes the oppositely disposed stopper surfaces 1311 and the transition surfaces 1312 located between the stopper surfaces 1311, the distance between the stopper surfaces 1311 is smaller than the cross-sectional width of the slit sections 1231, and the distance between the transition surfaces 1312 is larger than the cross-sectional width of the slit sections 1231 and smaller than the cross-sectional width of the expanded sections 1232.

In this embodiment, the pivot slot 123 may be an R-shaped slot, the limiting surface 1311 may be a planar surface, the transition surface 1312 may be a curved surface, and the shaft 131 may be a generally flat cylindrical shaft.

Because the distance between the limiting surfaces 1311 of the rotating shaft 131 is smaller than the cross-sectional width of the narrow opening segment 1231, and the cross-sectional width of the narrow opening segment 1231 is smaller than the cross-sectional width of the extended segment 1232, the rotating shaft 131 can be ensured to be smoothly inserted into the pivoting groove 123 or taken out from the pivoting groove 123, meanwhile, the position of the transition surface 1312 relative to the pivoting groove 123 can be changed due to the fact that the rotating shaft 131 rotates along the pivoting groove 123 in the rotating process, the distance between the two transition surfaces 1312 is larger than the cross-sectional width of the narrow opening segment 1231 and smaller than the cross-sectional width of the extended segment 1232, the R-shaped pivoting groove 123 has a good limiting effect on the transition surfaces 1312, therefore, the risk that the rotating shaft 131 falls off from the pivoting groove 123 can be reduced, the reliability of the rotating connection of the first end 111 and the second end 121 is improved, the falling damage caused by the separation of the first arc-shaped coil 110 from the second arc-shaped coil 120 in the rotating process is avoided, and the service life of the coil device 100 is further improved.

In some possible embodiments of the present utility model, as shown in fig. 2 and 4, the rotary opening and closing mechanism 130 further includes an arc-shaped slider 133, where the arc-shaped slider 133 is disposed on a side of the connection portion 132 facing the rotation shaft 131 and between the rotation shaft 131 and the first end 111. If the first end 111 is located above the second end 121, the arc slider 133 may be located above the rotating shaft 131, where an inner wall of the mounting groove 124 connected with the pivot groove 123 is provided with an arc chute 125 matched with the arc slider 133, and the arc slider 133 and the arc chute 125 are matched to limit radial movement during rotation of the rotating shaft 131.

In this embodiment, as shown in fig. 5, the arrangement of the arc-shaped sliding block 133 and the arc-shaped sliding groove 125 plays a good role in limiting the movement of the rotating shaft 131 of the rotary opening and closing mechanism 130 in the third position relative to the pivoting groove 123, so that the radial movement of the rotating shaft 131 relative to the pivoting groove 123 can be limited in the process of rotating the rotating shaft 131 relative to the pivoting groove 123, the first arc-shaped coil 110 and the second arc-shaped coil 120 are prevented from being separated, and the first arc-shaped coil 110 and the second arc-shaped coil 120 can be reliably connected in the rotating process, so that the risk that the first arc-shaped coil 110 is separated from the second arc-shaped coil 120 and falls in the rotating process of the first arc-shaped coil 110 relative to the second arc-shaped coil 120 is avoided, and the service life of the coil device 100 is further improved, and the use safety of the coil device 100 is further improved. Meanwhile, as shown in fig. 6, when the rotary opening and closing mechanism 130 is at the second position, the arc-shaped slider 133 is located in the pivot slot 123, so that the arrangement of the arc-shaped slider 133 does not affect the closing and separating of the first arc-shaped coil 110 and the second arc-shaped coil 120, so that the first arc-shaped coil 110 and the second arc-shaped coil 120 can be smoothly closed and separated.

In some possible embodiments provided by the present utility model, as shown in fig. 1, 2 and 3, the coil apparatus 100 further includes: the locking mechanism 140 is disposed on the first arc-shaped coil 110 and corresponds to the rotary opening and closing mechanism 130, and the locking mechanism 140 is used for locking the rotary opening and closing mechanism 130 in the accommodating groove.

That is, the number of the locking mechanisms 140 is two, the two locking mechanisms 140 are disposed corresponding to the two rotating and opening and closing mechanisms 130, and the arrangement of the locking mechanisms 140 can lock the rotating and opening and closing mechanisms 130 in the accommodating groove 122, so as to improve the reliability and stability of the corresponding rotating and opening and closing mechanisms 130 for closing and connecting the first end 111 and the second end 121 in the second position, and the reliability and stability of the rotating and opening and closing mechanisms 130 for rotationally connecting the first end 111 and the second end 121 in the third position, thereby avoiding the occurrence of the situation that the first end 111 and the second end 121 are separated due to the loose closing and connecting or rotating and improving the use safety and reliability of the coil device 100.

Specifically, when the two rotating opening and closing mechanisms 130 are both in the second position, i.e. the coil device 100 is in a closed loop structure, at this time, the two locking mechanisms 140 lock the two rotating opening and closing mechanisms 130 in the corresponding accommodating grooves 122 respectively, so as to improve the reliability of the closed connection of the whole coil device 100. When the two rotary opening and closing mechanisms 130 are respectively located at the first position and the third position, the locking mechanism 140 corresponding to the rotary opening and closing mechanism 130 located at the third position locks the rotary opening and closing mechanism 130 in the accommodating groove 122, and the corresponding first end 111 and second end 121 can be rotatably connected, so that the reliability of the rotary connection of the first end 111 and the second end 121 is determined, and the risk of separation of the first arc-shaped coil 110 from the second arc-shaped coil 120 in the process of rotating relative to the second arc-shaped coil 120 is avoided.

In the above embodiment, the lock mechanism 140 includes: the trigger member 141 and the locking member 142 are connected in a transmission manner, for example, the trigger member 141 and the locking member 142 are connected through a transmission mechanism, the transmission mechanism can be gear rack transmission, link transmission and the like, the trigger member 141 acts, the locking member 142 can be driven to act through the transmission mechanism, and the trigger member 141 can be a button, a knob or other mechanisms.

The rotary opening and closing mechanism 130 is provided with a guide groove coaxial with the rotating shaft 131, and the locking piece 142 is slidably disposed in the guide groove, for example, the locking piece 142 may be a pin, a connecting rod or other structures, specifically, the locking piece 142 may be a latch, and the latch may slide in the guide groove. The side wall of the accommodating groove 122 is provided with a limiting groove 127 matched with the locking piece 142, the triggering piece 141 is used for driving the locking piece 142 to switch between a locking position and an opening and closing position, the locking position is a position where the locking piece 142 is inserted into the limiting groove 127, and the opening and closing position is a position where the locking piece 142 is separated from the limiting groove 127.

Therefore, the working state of the trigger member 141 can be reasonably adjusted according to the opening and closing or rotating states of the first end 111 and the second end 121, so as to drive the locking member 142 to be in the locking position or the opening and closing position, so as to meet the requirements of different states of the coil device 100.

Specifically, when the rotating opening and closing mechanism 130 closes the corresponding first end 111 and second end 121, that is, when the rotating opening and closing mechanism 130 is in the second position, the locking piece 142 in the locking position may be located in the limiting groove 127, whereby, with the locking piece 142 and the limiting groove 127, the movement of the first end 111 with respect to the second end 121 can be limited, so that the first end 111 and the second end 121 can be reliably closed and connected without being separated.

When the rotary opening and closing mechanism 130 rotates the corresponding first end 111 and second end 121 to be connected, i.e. the rotary opening and closing mechanism 130 is in the third position, the locking member 142 in the locking position is rotatably located in the limiting slot 127, i.e. the locking member 142 can rotate in the limiting slot 127. Since the guide groove is coaxially disposed with the rotation shaft 131, so that the locking member 142 disposed in the guide groove is coaxially disposed with the rotation shaft 131, when the rotary opening and closing mechanism 130 is in the third position, the rotation of the rotation shaft 131 relative to the pivot groove 123 and the rotation of the locking member 142 relative to the limit groove 127 are coaxially disposed, and thus the reliable rotation of the first end portion 111 relative to the second end portion 121 can be ensured. At the same time, the locking piece 142 located in the limiting groove 127 can prevent the first end 111 and the second end 121 from separating, and further can reliably rotationally connect the first end 111 and the second end 121.

It will be appreciated that when the first end 111 and the second end 121 need to be separated, the trigger member 141 may be pressed to drive the locking member 142 to be at the open and close position, i.e. the locking member 142 is separated from the limiting slot 127, for example, the locking member 142 is retracted into the guiding slot, at this time, the first arc-shaped coil 110 is moved away from the second arc-shaped coil 120, so that the connecting portion 132 and the rotating shaft 131 are correspondingly separated from the connecting slot and the pivoting slot 123, so as to realize the separation operation of the first end 111 and the second end 121, i.e. the rotating opening and closing mechanism 130 is switched from the second position to the first position.

Further, the locking mechanism 140 may further include a reset mechanism, where the reset mechanism is configured to reset the trigger member 141 to the initial position, and reset the locking member 142 from the open-close position to the locking position, so that the locking mechanism 140 can be reused, and the operation process of the locking mechanism 140 is simplified, so that the use is convenient. Specifically, the reset mechanism may be a spring or other reset member meeting the requirement, and the utility model is not limited in particular.

In some possible embodiments provided by the present utility model, the coil apparatus 100 further includes: the first electrical connection piece is disposed on the two first end portions 111, and the second electrical connection piece is disposed on the two second end portions 121, and the first electrical connection piece and the corresponding second electrical connection piece can be electrically connected.

When the rotary opening and closing mechanism 130 makes the corresponding first end 111 and the second end 121 close and connect, i.e. when the rotary opening and closing mechanism 130 is at the second position, the corresponding first electrical connection piece and the corresponding second electrical connection piece on the first end 111 and the second end 121 are electrically connected, and when the rotary opening and closing mechanism 130 makes the corresponding first end 111 and the corresponding second end separate and set or rotate and connect, i.e. when the rotary opening and closing mechanism 130 is at the first position or the third position, the corresponding first electrical connection piece and second electrical connection piece on the first end 111 and the second end 121 are electrically disconnected.

Therefore, when the first end 111 and the second end 121 of the two rotary opening and closing mechanisms 130 are both in the closed state, that is, when the two rotary opening and closing mechanisms 130 are both in the second position, the coil device 100 is in the closed-loop state, and the two first electrical connectors and the corresponding second electrical connectors are electrically connected, so that the whole coil device 100 is electrically connected, so as to ensure that the coil device 100 can reliably work.

When at least one of the rotary opening and closing mechanisms 130 separates the corresponding first end 111 from the second end 121, that is, when at least one of the rotary opening and closing mechanisms 130 is at the first position, the coil device 100 is in an open-loop state, so that when the other rotary opening and closing mechanism 130 is at the first position or the third position, the first electrical connection piece and the second electrical connection piece on the first end 111 and the second end 121 corresponding to the rotary opening and closing mechanism 130 are electrically disconnected, and the open-loop state of the coil device 100 can be ensured to be electrically disconnected, so that the operation safety of the coil device 100 is improved.

In the above embodiment, as shown in fig. 1, 2 and 3, the first electrical connector includes a pin 150 disposed at an end of the first arc-shaped coil 110; the second electrical connection piece includes a metal spring, the end of the second arc-shaped coil 120 is provided with a slot 126 corresponding to the pin 150, and the metal spring is located in the slot 126, so when the rotary opening and closing mechanism 130 is located at the second position, the pin 150 is inserted into the slot 126 and connected with the metal spring in the slot 126, and the electrical connection between the pin 150 and the metal spring can be achieved, and the first end 111 and the second end 121 are electrically connected.

The insertion groove 126 is located on the end surface of the second end 121, so that the pin 150 can be smoothly and reliably inserted into the insertion groove 126 and contacted with the metal spring sheet in the insertion groove 126 when the first end 111 and the second end 121 are closed and connected by the rotary opening and closing mechanism 130.

Further, the end of the pin 150 is provided with a guiding portion, and the guiding portion may be a curved surface structure, for example, the foot portion of the first pin 150 is provided with a curved surface structure, and the curved surface structure plays a good guiding role, so that the pin 150 can be smoothly inserted into the slot 126 and separated from the slot 126.

In the embodiment provided by the present utility model, as shown in fig. 1 to 6, the first arc-shaped coil 110 is located above the second arc-shaped coil 120, two first ends 111 of the first arc-shaped coil 110 and two second ends 121 of the second arc-shaped coil 120 are in one-to-one correspondence, and two rotary opening and closing mechanisms 130 are respectively disposed between the corresponding first ends 111 and second ends 121. When the two rotary opening and closing mechanisms 130 make the corresponding first end 111 and second end 121 in the closed state, that is, the two rotary opening and closing mechanisms 130 are in the second position, the rotating shafts 131 and the connecting portions 132 of the left and right rotary opening and closing mechanisms 130 are accommodated in the pivot grooves 123 and the mounting grooves 124 of the corresponding second end 121, at this time, the first arc-shaped coil 110 and the second arc-shaped coil 120 are surrounded into a closed loop structure, so as to form the coil device 100 that can be used. Because the locking piece 142 of the locking mechanism 140 is coaxially arranged with the rotating shaft 131, and in this state, the locking piece 142 is inserted into the limiting groove 127 of the second end 121, so that the relative movement of the first arc-shaped coil 110 and the second arc-shaped coil 120 can be limited, and the reliable closing connection of the two can be ensured. Meanwhile, the pin 150 mounted at the lower end of the first arc-shaped coil 110 contacts with the metal spring sheet in the slot 126 of the second arc-shaped coil 120, and the whole coil device 100 is electrically conducted.

When a human body part is required to be placed in the coil apparatus 100, one of the rotary opening and closing mechanisms 130 may be selectively switched from the second position to the first position and the other rotary opening and closing mechanism 130 may be switched from the second position to the third position according to the relative positions of the human body part and the coil apparatus 100. The locking member 142 may be driven to be at the open-close position by pressing the trigger member 141 of the locking mechanism 140, that is, the locking member 142 is separated from the limiting groove 127, so that the corresponding first end 111 is moved away from the second end 121 and is close to the inside of the coil device 100, so that the corresponding rotating shaft 131 and the connecting portion 132 slide out of the accommodating groove 122, and the rotating opening and closing mechanism 130 may be switched from the second position to the first position, and the corresponding first end 111 and second end 121 of the rotating opening and closing mechanism 130 are separated, and meanwhile, the rotating shaft 131 of the other rotating opening and closing mechanism 130 rotates around the pivoting groove 123, and the arc-shaped sliding block 133 slides in the arc-shaped sliding groove 125, so as to ensure that the rotating shaft 131 cannot be separated from the pivoting groove 123. In this state, the pins 150 on the first arc-shaped coils 110 corresponding to the two rotating opening and closing mechanisms 130 slide out of the slots 126, and the coil device 100 is electrically disconnected.

When the coil device 100 needs to be separated up and down, the trigger pieces 141 of the locking mechanisms 140 on the left and right sides are pressed simultaneously, the locking pieces 142 on the two sides are separated from the limiting grooves 127 simultaneously, the first arc-shaped coil 110 is lifted up vertically, the rotating shafts 131 of the rotating opening and closing mechanisms 130 on the two sides slide out from the openings of the pivoting grooves 123 simultaneously, and the first arc-shaped coil 110 and the second arc-shaped coil 120 are separated up and down.

An embodiment of the second aspect of the utility model provides a medical imaging apparatus comprising the coil arrangement 100 of any of the embodiments of the first aspect. Since the medical imaging apparatus includes the coil device 100 according to any one of the embodiments of the first aspect, the coil device 100 has all the advantageous technical effects described above, and will not be described in detail herein.

Further, the medical imaging apparatus further comprises a processing device, which is communicatively connected to the coil device 100, and is configured to process the radio frequency signal detected by the coil device 100 to obtain a tissue distribution image of the human body part.

In the description of the present utility model, the term "plurality" means two or more, unless explicitly defined otherwise, the orientation or positional relationship indicated by the terms "upper", "lower", etc. are orientation or positional relationship based on the drawings, merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model; the terms "coupled," "mounted," "secured," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, 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 present utility model. In the present utility model, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A coil apparatus for use in a medical imaging device, comprising:

a first arcuate coil including two oppositely disposed first ends;

the second arc-shaped coil comprises two second end parts which are in one-to-one correspondence with the two first end parts;

The two rotary opening and closing mechanisms are respectively arranged between the corresponding first end part and the corresponding second end part, and enable the corresponding first end part and second end part to be capable of opening and closing and relatively rotating.

2. The coil device according to claim 1, wherein when one of the two rotary opening and closing mechanisms brings the corresponding first end portion and the second end portion into a separated state, the other of the two rotary opening and closing mechanisms brings the corresponding first end portion and the second end portion into a rotatably connected state.

3. A coil assembly as set forth in claim 1, wherein,

the rotary opening and closing mechanism comprises a rotating shaft and at least two connecting parts, wherein the at least two connecting parts are distributed on the first end part along the axial direction of the rotating shaft, and the rotating shaft is arranged between two adjacent connecting parts;

the holding groove has been seted up to the second tip, the holding groove include with pivot groove and with the mounting groove of connecting portion looks adaptation of pivot looks adaptation, the mounting groove with the surface intercommunication of second arc coil is dodged in rotatory in-process connecting portion, rotatory mechanism that opens and shuts can hold in the holding groove with follow break away from in the holding groove, the pivot groove can be right radial direction motion of pivot is spacing.

4. A coil assembly as set forth in claim 3, wherein,

the pivoting groove comprises narrow opening sections and expansion sections, wherein the narrow opening sections are distributed along the depth direction of the pivoting groove and are adjacent to the groove opening, the cross section width of each narrow opening section is smaller than that of each expansion section, the peripheral side of the rotating shaft comprises limiting surfaces and transition surfaces, the limiting surfaces are arranged oppositely, the distance between the limiting surfaces is smaller than that of each narrow opening section, the distance between the transition surfaces is larger than that of each narrow opening section, and the distance between the transition surfaces is smaller than or equal to that of each expansion section.

5. The coil device according to claim 4, wherein,

the rotary opening and closing mechanism further comprises an arc-shaped sliding block, wherein the arc-shaped sliding block is arranged on one side, facing the rotating shaft, of the connecting part and is positioned between the rotating shaft and the first end part;

the installation groove with offer on the inner wall that the pivot groove is connected with arc slider complex arc spout, the arc slider with the arc spout cooperation is used for limiting the radial movement of pivot rotation in-process.

6. A coil arrangement according to claim 3, further comprising:

The locking mechanism is arranged on the first arc-shaped coil and corresponds to the rotary opening and closing mechanism, and the locking mechanism is used for locking the rotary opening and closing mechanism in the accommodating groove.

7. The coil device of claim 6, wherein the locking mechanism comprises:

the trigger piece and the locking piece that the transmission is connected, be provided with on the rotatory mechanism that opens and shuts with the coaxial guide way of pivot, the locking piece slidable sets up in the guide way, the lateral wall of holding tank seted up with the spacing groove of locking piece looks adaptation, the trigger piece is used for the drive the locking piece switches in locking position and open and shut the position, locking position is the locking piece inserts the position of spacing groove, open and shut the position is the locking piece breaks away from the position of spacing groove.

8. The coil device according to claim 1, characterized by further comprising:

the first electric connection pieces are arranged on the two first end parts, and the second electric connection pieces are arranged on the two second end parts, and the first electric connection pieces and the corresponding second electric connection pieces can be electrically connected.

9. The coil device according to claim 8, wherein,

The first electrical connection piece comprises a contact pin arranged at the first end part;

the second electrical connection piece comprises a metal elastic piece, a slot corresponding to the contact pin is formed in the second end portion, and the metal elastic piece is located in the slot; or alternatively, the first and second heat exchangers may be,

the second electrical connection piece comprises a contact pin arranged at the first end part;

the first electrical connection piece comprises a metal elastic piece, a slot corresponding to the contact pin is formed in the first end portion, and the metal elastic piece is located in the slot.

10. A medical imaging apparatus, comprising: coil arrangement according to any one of claims 1 to 9.

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