Ankle coil
By designing a deformable enclosed support assembly and ankle coil with partial coil units, the problem of bulky operation of ankle coil in the prior art is solved, and the simplicity of operation and the improvement of imaging quality is achieved.
Patent Information
- Application Number
- CN202420628225.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-03-27
AI Technical Summary
The upper part of the existing ankle coil is bulky and difficult to operate, which increases the complexity of operation.
An ankle coil including a support assembly and a coil unit is designed. The support assembly consists of a seat body, a flexible sheet and a pressing member, which is deformed and enclosed, and the pressing member can be moved and maintained in an enclosed state, and a partial coil unit is provided therein.
It enables the placement of the subject's foot without moving the coil, simplifies the operation process, reduces the operation difficulty, and improves the imaging quality.
Smart Images
Figure CN222676188U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of magnetic resonance imaging, in particular to an ankle coil. Background Art
[0002] The magnetic resonance imaging system includes a radio frequency transmitting coil and a radio frequency receiving coil. The radio frequency transmitting coil is used to generate a pulsed gradient magnetic field, and the radio frequency receiving coil receives the nuclear magnetic resonance signal generated by the atomic nucleus. The radio frequency receiving coil can be the transmitting coil itself or an independent coil that only receives radio frequency signals.
[0003] The ankle coil is a magnetic resonance radio frequency receiving coil specifically used for ankle scanning. At present, the ankle coil usually consists of two completely detachable upper and lower parts. Before scanning, the lower part needs to be placed first, then the subject's foot, and finally the upper part. The upper part of the ankle coil is usually bulky and difficult to carry and place, which increases the difficulty of operating the ankle coil. Utility Model Content
[0004] The utility model aims to provide an ankle coil which is easy to operate.
[0005] The utility model provides an ankle coil, comprising a support assembly and a coil unit arranged inside the support assembly. The support assembly comprises a seat body, two flexible sheets and a pressure piece. The seat body comprises a side support portion located on the sole side of the foot and used to support the sole of the foot, and a bottom support portion located on the rear side of the foot and used to support the rear of the heel and the rear of the distal end of the calf. The two flexible sheets are connected to the seat body and are arranged to be respectively located on the left and right sides of the foot. The two flexible sheets can be deformed to wrap the foot and / or the distal end of the calf from the front side of the ankle and overlap each other, thereby reaching an enclosed state. The pressure piece is movably connected to the seat body. The pressure piece can move until it presses against the overlapping part of the two flexible sheets in the enclosed state to maintain the enclosed state of the two flexible sheets, and a partial coil constituting the coil unit is arranged in the pressure piece.
[0006] When the foot of the subject is to be placed on the ankle coil, there is no need to carry the ankle coil, thereby facilitating the operation. The partial coil constituting the coil unit is arranged in the pressing member to improve the imaging quality.
[0007] In another schematic embodiment of the ankle coil, the pressure piece has two connection ends connected to the base. The two connection ends are rotatably connected to the side support portion, which can improve the stability of the pressure piece as a handle. The coil unit includes a first splicing line and a second splicing line. The first splicing line is located in the pressure piece, and the second splicing line is located in the side support portion. When the pressure piece presses the overlapping part of the two flexible sheets in an enclosed state, the first splicing line and the second splicing line can be conductively contacted at the two connection ends to form a ring coil. This helps to improve the imaging quality.
[0008] In another schematic embodiment of the ankle coil, the pressure piece is rotatably connected to the side support portion, and the rotation axis is parallel to the left-right direction of the human body. The pressure piece has a pressure portion at the outer end of its rotation radial direction. During the process of rotating the pressure piece, the pressure portion can bypass the toe. The pressure piece can rotate to a pressure position. The pressure portion of the pressure piece in the pressure position is located on the dorsal side of the foot and can press the overlapping part of the two flexible sheets in the enclosed state. Such an arrangement is convenient for operation and helps save space.
[0009] In another exemplary embodiment of the ankle coil, the support assembly further comprises a strap. One end of the strap is fixedly connected to one of the flexible sheets. When the two flexible sheets are in an enclosed state, the other end of the strap can be detachably connected to the other flexible sheet to maintain the enclosed state of the two flexible sheets. This helps to improve the imaging quality.
[0010] In another exemplary embodiment of the ankle coil, the support assembly further includes a locking assembly. The locking assembly includes a first locking member and a second locking member. The first locking member is mounted on one of the flexible sheets. The second locking member is mounted on the other flexible sheet. When the two flexible sheets are in an enclosed state, the first locking member and the second locking member can form a snap connection to maintain the enclosed state of the two flexible sheets. This helps to further improve the imaging quality.
[0011] In another exemplary embodiment of the ankle coil, the locking assembly also includes a first contact member arranged on the first locking member and a second contact member arranged on the second locking member. When the first locking member and the second locking member form a snap connection, the first contact member and the second contact member can be conductively contacted. The coil unit also includes a third splicing line and a fourth splicing line. The third splicing line is arranged in a flexible sheet on which the first locking member is installed and is electrically connected to the first contact member. The fourth splicing line is arranged in a flexible sheet on which the second locking member is installed and is electrically connected to the second contact member. When the first locking member and the second locking member form a snap connection, the third splicing line and the fourth splicing line are connected to form a coil. This can make the arrangement of the coil more flexible.
[0012] In another exemplary embodiment of the ankle coil, when the two flexible sheets are in an enclosed state, the edges of the two flexible sheets overlap. Each flexible sheet is thinned at the edge to form a positioning groove. When the two flexible sheets are in an enclosed state, the edge of each flexible sheet is embedded in the positioning groove of the other flexible sheet. This facilitates the two flexible sheets to overlap each other in a standard overlapping range, which is conducive to improving imaging quality.
[0013] In another exemplary embodiment of the ankle coil, the conductive wires of the coil units are distributed in the mutually overlapping parts of the two flexible sheets in the enclosed state, so as to achieve overlapping decoupling of the coils, thereby facilitating the improvement of imaging quality.
[0014] In another exemplary embodiment of the ankle coil, the support assembly further includes a bottom pad. The bottom pad is connected to the bottom support portion and forms a bottom groove with a concave cross-section. The bottom groove is used to accommodate the heel and the rear of the distal end of the calf. The bottom pad can limit the left and right shaking of the subject's foot, thereby facilitating the improvement of imaging quality.
[0015] In another exemplary embodiment of the ankle coil, the support assembly further comprises a rotating support frame. The seat body is rotatably connected to the rotating support frame, and the rotation axis is parallel to the left-right direction of the human body. This facilitates the adjustment of the angle of the seat body to suit subjects in different situations. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The following drawings are only used to illustrate and explain the present invention, and do not limit the scope of the present invention.
[0017] Figure 1 A schematic structural diagram of an exemplary embodiment of an ankle coil.
[0018] Figure 2 for Figure 1 The changing state diagram of the ankle coil is shown.
[0019] Figure 3 For display Figure 1 Coil unit of the ankle coil shown.
[0020] Figure 4 Used to illustrate how the edges of a flexible sheet overlap.
[0021] Figure 5 for Figure 1 Another changing state diagram of the ankle coil is shown.
[0022] Figure 6 A schematic structural diagram of another exemplary embodiment of an ankle coil.
[0023] Figure 7 A schematic structural diagram of another exemplary embodiment of an ankle coil.
[0024] Figure 8 Used to show the partial cross-sectional structure of the lock assembly.
[0025] Fig. 9 The figure is a schematic structural diagram of another exemplary embodiment of an ankle coil.
[0026] Fig.10The figure is a schematic structural diagram of another exemplary embodiment of an ankle coil.
[0027] Description of symbols
[0028] 100 Support components
[0029] 10 base
[0030] 11 Side support
[0031] 12 Bottom support
[0032] 30 Flexible sheet
[0033] 31 Edge
[0034] 33 Positioning groove
[0035] 40 Pressing piece
[0036] 41 Pressing part
[0037] 42 Connection terminal
[0038] 50 straps
[0039] 60 Lock assembly
[0040] 61 First locking piece
[0041] 62 second locking piece
[0042] 63 First contact
[0043] 64 Second contact
[0044] 70 Base
[0045] 71 Bottom Slot
[0046] 80 Rotating support frame
[0047] 200 Coil Units
[0048] 21 First splicing line
[0049] 22 Second splicing line
[0050] 23 Third splicing line
[0051] 24 Fourth splicing line
[0052] 25 Foot coil
[0053] 26 Side Coil
[0054] 27 Rear coil
[0055] 28 Front coil
[0056] 300 with cable plug
[0057] RL Human left and right direction
[0058] L1 First axis
[0059] L2 Second axis DETAILED DESCRIPTION
[0060] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings. The same reference numerals in the drawings represent components with the same structure or similar structures but the same functions.
[0061] In this document, “exemplary” means “serving as an example, instance or illustration”, and any diagram or implementation described in this document as “exemplary” should not be interpreted as a more preferred or more advantageous technical solution.
[0062] In this article, "first", "second", "third" and "fourth" do not indicate their importance or order, but are only used to indicate the difference between them for the convenience of document description.
[0063] In order to make the drawings concise, each figure only schematically shows the parts related to the utility model, which do not represent the actual structure of the product.
[0064] Figure 1 A schematic structural diagram of an exemplary embodiment of an ankle coil. Figure 2 for Figure 1 The changing state diagram of the ankle coil is shown in FIG. Figure 1 and Figure 2 As shown, the ankle coil includes a support component 100 and a coil unit ( Figure 1 and Figure 2 (The middle coil unit is not visible). For ease of understanding, this article uses the anatomical terminology of the left and right directions of the human body RL to assist in explaining the structure of the ankle coil.
[0065] like Figure 1 and Figure 2 As shown, the support assembly 100 includes a seat body 10, two flexible sheets 30 and a pressing member 40. The seat body 10 includes a side support portion 11 located on the sole side and used to support the sole of the foot, and a bottom support portion 12 located on the rear side of the foot and used to support the rear of the heel and the rear of the distal end of the calf. The two flexible sheets 30 are connected to the seat body 10 and are arranged to be located on the left and right sides of the foot, respectively, that is, Figure 1 The two flexible sheets 30 can be Figure 1 The bending deformation is based on the state shown Figure 2The state shown is to wrap the foot and the distal end of the calf from the front of the ankle and overlap each other to achieve an enclosed state ( Figure 2 The state shown is the enclosed state). The seat body 10 is made of, for example, a hard material to minimize its deformation during use. The flexible sheet 30 is made of, for example, a soft material to facilitate its Figure 1 The status and Figure 2 In other exemplary embodiments, the two flexible sheets 30 may also be configured to wrap only one of the foot and the distal end of the calf from the front side of the ankle.
[0066] The pressing member 40 is movably connected to the base 10. The pressing member 40 can move until it presses the overlapping portion of the two flexible sheets 30 in the enclosed state, so as to maintain the enclosed state of the two flexible sheets 30 during the magnetic resonance imaging process, thereby facilitating the improvement of imaging quality. Specifically, in this exemplary embodiment, the pressing member 40 is rotatably connected to the base 10 around the first axis L1. When the pressing member 40 rotates to Figure 1 When the position is shown, it will not affect the flexible sheet 30. Figure 1 The state shown is transformed to Figure 2 In the state shown, it can be used as a handle to facilitate the carrying of the ankle coil. Figure 2 When the pressing position is shown, the overlapping portion of the two flexible sheets 30 in the enclosed state can be pressed to maintain the enclosed state of the two flexible sheets 30 (i.e., to maintain the enclosed state of the two flexible sheets 30). Figure 2 The rotating connection mode is convenient for operation, but is not limited thereto. In other exemplary embodiments, the pressing member 40 may also be movably connected to the seat body 10 in other ways.
[0067] A part of the coil constituting the coil unit 200 is arranged in the pressing member 40 , and the shape of the part of the coil can be set as required to improve the imaging quality.
[0068] When placing the subject's foot on the ankle coil, first adjust the ankle coil to Figure 1 In the state shown, the subject's foot is placed on the seat 10, specifically, the sole of the subject's foot is against the side support part 11, and the rear of the subject's heel and the rear of the distal end of the calf fall on the bottom support part 12. Then, the two flexible sheets 30 are operated to deform to Figure 2 Finally, the pressing member 40 is operated to move to Figure 2 The pressing position is shown. There is no need to carry the ankle coil during the process, which makes the operation easier.
[0069] like Figure 1 and Figure 2As shown, in this exemplary embodiment, the pressing member 40 is rotatably connected to the side support portion 11 around the first axis L1, and the first axis L1 is parallel to the left-right direction RL of the human body. Figure 1 The upper end of the pressing member 40 is provided with a pressing portion 41. In the process of rotating the pressing member 40, the pressing portion 41 can bypass the toes. The pressing portion 41 of the pressing member 40 in the pressing position is located on the dorsal side of the foot and can press the overlapping part of the two flexible sheets 30 in the enclosed state. Such a setting is convenient for operation and helps to save space. In the case where the pressing member 40 is also used as a handle, the pressing portion 41 is, for example, the part of the handle that is held by the hand, and the pressing portion 41 can facilitate the lifting of the pressing member 40 as a handle.
[0070] In the exemplary embodiment, the conductive wires of the coil unit 200 are distributed in the overlapping parts of the two flexible sheets 30 in the enclosed state to achieve overlapping decoupling of the coils. This is helpful to improve the imaging quality. The specific description is as follows. Since the coil unit of the ankle coil is completely arranged inside the support assembly 100, Figure 1 and Figure 2 is not visible in , so we Figure 3 4 shows the coil unit 200 of the ankle coil separately (part of the coil constituting the coil unit 200 provided in the pressing member 40 is not shown). Figure 3 The state of the coil unit 200 shown in FIG. Figure 2 The ankle coil is shown in Figure 1. Figure 3 As shown, the coil unit 200 includes three sole coils 25 for covering the sole of the foot, six side coils 26 for covering the left and right sides of the heel and the distal end of the calf, two rear coils 27 for covering the rear of the heel and the distal end of the calf, and four front coils 28 for covering the front of the foot and the distal end of the calf. For ease of explanation, Figure 3 The four front coils 28 are shown separately on the right side. The four front coils 28 are divided into Figure 3 In the upper and lower groups shown in FIG, the two front coils 28 in each group are respectively located in two flexible sheets 30. When the two flexible sheets 30 are in the enclosed state, the two front coils 28 in each group overlap to be decoupled.
[0071] like Figure 1 and Figure 2 As shown, in the exemplary embodiment, the support assembly 100 further includes a strap 50. One end of the strap 50 is fixedly connected to one of the flexible sheets 30. When the two flexible sheets 30 are in the enclosed state, the other end of the strap 50 can be detachably connected to the other flexible sheet 30 to maintain the enclosed state of the two flexible sheets 30 (i.e., to maintain the enclosed state of the two flexible sheets 30). Figure 2In the exemplary embodiment, the other end of the strap 50 is detachably connected to another flexible sheet 30, for example, by Velcro, which is low in cost and easy to operate, but is not limited thereto.
[0072] like Figure 2 As shown, in the exemplary embodiment, when the two flexible sheets 30 are in the enclosed state, the edges 31 of the two flexible sheets 30 overlap. Figure 4 The solid line and the dotted line in FIG. 3 respectively show the separation state of the two flexible sheets 30 and the overlap state of the edges 31. Figure 4 As shown, each flexible sheet 30 is thinned at an edge 31 to form a positioning groove 33. When the two flexible sheets 30 are in an enclosed state, the edge 31 of each flexible sheet 30 is embedded in the positioning groove 33 of the other flexible sheet 30. This facilitates the two flexible sheets to overlap each other within a standard overlapping range, which is beneficial to improving the imaging quality.
[0073] like Figure 1 and Figure 2 As shown, in this exemplary embodiment, the pressing member 40 is semi-circular and has two connecting ends 42 connected to the seat body 10. The two connecting ends 42 are rotatably connected to the side support portion 11. This can improve the stability of the pressing member as a handle.
[0074] like Figure 1 and Figure 2 As shown, in the exemplary embodiment, the support assembly 100 further includes a rotating support frame 80. The seat body 10 is rotatably connected to the rotating support frame 80 around a second axis L2, and the second axis L2 is parallel to the left-right direction RL of the human body. Figure 5 Shown in Figure 2 The state shown is a state where the seat body 10 is rotated by an angle relative to the rotating support frame 80. This makes it easy to adjust the angle of the seat body to suit different conditions of subjects. The lower end of the rotating support frame 80 can be plugged into a medical bed of a magnetic resonance imaging system, for example, and the coil unit 200 is connected to a signal processing unit of the magnetic resonance imaging system through a connector provided on the rotating support frame 80, but is not limited thereto.
[0075] Figure 6 FIG. 1 is a schematic diagram of the structure of another exemplary embodiment of an ankle coil. Figure 1 The same or similar aspects of the ankle coil shown are not described in detail here, and the differences are as follows. Figure 6 As shown, in this exemplary embodiment, the part of the coil constituting the coil unit 200 provided in the pressing member 40 is the first splicing line 21. The coil unit 200 further includes a second splicing line 22. The second splicing line 22 is located in the side support portion 11. When the pressing member 40 is in the pressing position ( Figure 6 The middle pressing member 40 is located at the pressing position), the first splicing line 21 and the second splicing line 22 can be conductively contacted at two connection ends 42 (for example, conductively contacted through electrical contacts) to form a ring coil. The ring coil is, for example, a double-circular ring coil. This helps to improve the imaging quality.
[0076] Figure 7 FIG. 1 is a schematic diagram of the structure of another exemplary embodiment of an ankle coil. Figure 1 The same or similar aspects of the ankle coil shown are not described in detail here, and the differences are as follows. Figure 7 As shown, in this exemplary embodiment, the support assembly 100 is not provided with a strap 50, but a locking assembly 60 is provided. Each locking assembly 60 includes a first locking member 61 and a second locking member 62. The first locking member 61 is installed on one of the flexible sheets 30. The second locking member 62 is installed on the other flexible sheet 30. When the two flexible sheets 30 are in an enclosed state, the first locking member 61 and the second locking member 62 can form a snap connection to maintain the enclosed state of the two flexible sheets 30. This is conducive to further improving the imaging quality. In the exemplary embodiment, the number of locking assemblies 60 can be adjusted as needed.
[0077] Figure 8 It is used to show the partial cross-sectional structure of the locking assembly 60. Figure 8 As shown, in the exemplary embodiment, the locking assembly 60 also includes a first contact member 63 provided on the first locking member 61 and a second contact member 64 provided on the second locking member 62. When the first locking member 61 and the second locking member 62 form a snap connection, the first contact member 63 and the second contact member 64 can be conductively contacted. The coil unit 200 also includes a third splicing line 23 and a fourth splicing line 24. The third splicing line 23 is disposed in the flexible sheet 30 on which the first locking member 61 is installed and is electrically connected to the first contact member 63. The fourth splicing line 24 is disposed in the flexible sheet 30 on which the second locking member 62 is installed and is electrically connected to the second contact member 64. When the first locking member 61 and the second locking member 62 form a snap connection ( Figure 8 The first locking member 61 and the second locking member 62 form a snap connection), and the third splicing line 23 and the fourth splicing line 24 are connected to form a complete coil. This makes the arrangement of the coil more flexible. It should be noted that in this embodiment, only two locking members can be provided without the pressing member 40.
[0078] Fig. 9 FIG. 1 is a schematic diagram of the structure of another exemplary embodiment of an ankle coil. Figure 1The same or similar aspects of the ankle coil shown are not described in detail here, and the differences are as follows. Fig. 9 As shown, in this exemplary embodiment, the support assembly 100 further includes a bottom pad 70. The bottom pad 70 is connected to the bottom support portion 12 and is formed with a bottom groove 71 with a concave cross-section. The bottom groove 71 is used to accommodate the heel and the rear of the distal end of the calf. The bottom pad 70 can limit the left and right shaking of the subject's foot, thereby helping to improve the imaging quality. The surface layer of the bottom pad 70 can be paved with sponge, for example, to improve the comfort of the subject.
[0079] Fig.10 FIG. 1 is a schematic diagram of the structure of another exemplary embodiment of an ankle coil. Figure 1 The same or similar aspects of the ankle coil shown are not described in detail here, and the differences are as follows. Fig.10 As shown, in this exemplary embodiment, the ankle coil further includes a cable plug 300, which is connected to the seat body 10, and the coil unit 200 is connected to the signal processing unit of the magnetic resonance imaging system through the cable plug 300. In this exemplary embodiment, the rotating support frame 80 is directly placed on the medical bed of the magnetic resonance imaging system, rather than plugged into the medical bed, and the rotating support frame 80 is not provided with a connector for connecting the coil unit 200. Such an ankle coil has better applicability.
[0080] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.
[0081] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present utility model. They are not intended to limit the scope of protection of the present utility model. Any equivalent implementation scheme or changes that do not deviate from the technical spirit of the present utility model, such as combination, division or repetition of features, should be included in the scope of protection of the present utility model.
Claims
1. An ankle coil, comprising a support component (100) and a coil unit (200) arranged inside the support component (100), characterized in that: The support assembly (100) comprises: A seat body (10) comprising a side support portion (11) located on the sole side and used to support the sole, and a bottom support portion (12) located on the rear side and used to support the rear of the heel and the rear of the distal end of the calf; Two flexible sheets (30) connected to the seat (10) and arranged to be respectively located on the left and right sides of the foot, the two flexible sheets (30) being deformable to wrap the foot and / or the distal end of the calf from the front side of the ankle and overlap each other to achieve an enclosed state; and A pressing member (40) is movably connected to the seat body (10), and the pressing member (40) can move until it presses against the overlapping portion of the two flexible sheets (30) in the enclosed state to maintain the enclosed state of the two flexible sheets (30), and a part of the coil constituting the coil unit (200) is arranged in the pressing member (40).
2. The ankle coil according to claim 1, characterized in that The pressing member (40) has two connecting ends (42) connected to the seat body (10), and the two connecting ends (42) are rotatably connected to the side support part (11). The coil unit (200) includes a first splicing line (21) and a second splicing line (22), wherein the first splicing line (21) is located in the pressing member (40), and the second splicing line (22) is located in the side support part (11). When the pressing member (40) presses the overlapping parts of the two flexible sheets (30) in the enclosed state, the first splicing line (21) and the second splicing line (22) can be conductively contacted at the two connecting ends (42) to form a ring coil.
3. The ankle coil according to claim 1, characterized in that The pressing member (40) is rotatably connected to the side support portion (11), and the rotation axis is parallel to the left-right direction (RL) of the human body. The pressing member (40) has a pressing portion (41) at the outer end of its rotation radial direction. During the rotation of the pressing member (40), the pressing portion (41) can bypass the toe. The pressing member (40) can be rotated to a pressing position. The pressing portion (41) of the pressing member (40) in the pressing position is located on the dorsal side of the foot and can press the overlapping portion of the two flexible sheets (30) in the enclosed state.
4. The ankle coil according to claim 1, characterized in that The support assembly (100) further comprises a strap (50), one end of which is fixedly connected to one of the flexible sheets (30), and when the two flexible sheets (30) are in the enclosed state, the other end of the strap (50) can be detachably connected to another flexible sheet (30) to maintain the enclosed state of the two flexible sheets (30).
5. The ankle coil according to claim 1, characterized in that The support assembly (100) further comprises a locking assembly (60), wherein the locking assembly (60) comprises: a first locking member (61) mounted on one of the flexible sheets (30); and A second locking member (62) is mounted on the other flexible sheet (30); when the two flexible sheets (30) are in the enclosed state, the first locking member (61) and the second locking member (62) can form a snap connection to maintain the enclosed state of the two flexible sheets (30).
6. The ankle coil according to claim 5, characterized in that The locking assembly (60) further comprises a first contact piece (63) arranged on the first locking piece (61) and a second contact piece (64) arranged on the second locking piece (62); when the first locking piece (61) and the second locking piece (62) form a snap connection, the first contact piece (63) and the second contact piece (64) can be in conductive contact; the coil unit (200) further comprises a third splicing line (23) and a fourth splicing line (24); the third splicing line (23) is arranged in the flexible sheet (30) on which the first locking piece (61) is installed and is electrically connected to the first contact piece (63); the fourth splicing line (24) is arranged in the flexible sheet (30) on which the second locking piece (62) is installed and is electrically connected to the second contact piece (64); when the first locking piece (61) and the second locking piece (62) form a snap connection, the third splicing line (23) and the fourth splicing line (24) are conductively connected to form a coil.
7. The ankle coil according to claim 1, characterized in that When the two flexible sheets (30) are in the enclosed state, the edges (31) of the two flexible sheets (30) overlap, and each flexible sheet (30) becomes thinner at the edge (31) to form a positioning groove (33). When the two flexible sheets (30) are in the enclosed state, the edge (31) of each flexible sheet (30) is embedded in the positioning groove (33) of the other flexible sheet (30).
8. The ankle coil according to claim 1, characterized in that The conductive wires of the coil unit (200) are distributed in the mutually overlapping parts of the two flexible sheets (30) in the enclosed state, so as to achieve overlapping decoupling of the coils.
9. The ankle coil according to claim 1, characterized in that The support assembly (100) further comprises a bottom pad (70), wherein the bottom pad (70) is connected to the bottom support portion (12) and forms a bottom groove (71) with a concave cross-section, wherein the bottom groove (71) is used to accommodate the heel and the rear distal end of the calf.
10. The ankle coil according to claim 1, characterized in that The support assembly (100) further comprises a rotating support frame (80), the seat body (10) is rotatably connected to the rotating support frame (80), and the rotation axis is parallel to the left-right direction (RL) of the human body.