Ankle joint positioning auxiliary device

Abstract

The utility model relates to the technical field of medical auxiliary appliances, in particular to an ankle joint positioning auxiliary device which comprises a transverse protection plate and a vertical protection plate, the transverse protection plate and the vertical protection plate are connected through an adjusting assembly, the adjusting assembly comprises a fixing plate, a rotating shaft containing groove is formed in the top face of the fixing plate, and a rotatable rotating shaft is arranged in the rotating shaft containing groove. A connecting plate is installed on the top side of the middle of the rotating shaft, and the top of the connecting plate is installed in the bottom of the vertical protection plate. According to the ankle joint positioning auxiliary device, after the front end of the instep is lifted or pressed down, the angle of the instep in the vertical direction relative to the ankle joint can be adjusted through the adjusting assembly, a magnetic resonance imaging picture in an ideal state can be conveniently obtained, and the rotation angle of the transverse protection plate can be accurately mastered through the arrangement of the protractor; the ankle joint positioning angle can be accurately adjusted conveniently, the instep can be kept fixed through the bandage, the foot sole is attached to the transverse protection plate, and imaging is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of medical auxiliary appliances, and specifically, to an ankle joint positioning assistance device. Background Technique

[0002] In MRI imaging, positioning can be said to be an extremely important link. Reasonable and user-friendly positioning can not only obtain excellent MRI image quality but also avoid the generation of related artifacts. Some people say that MRI is "three points for positioning and seven points for scanning", and some people say that MRI is "five points for positioning and five points for scanning". No matter how many points for positioning and how many points for scanning, it is undeniable that reasonable and user-friendly positioning is the basis for obtaining excellent MRI images and is also an important guarantee for avoiding the generation of related artifacts. Of course, due to the interference of various factors during actual scanning, it is very difficult to ensure that the subject is in an ideal position.

[0003] Currently, when performing magnetic resonance imaging on the ankle joint, due to inaccurate positioning of the patient's ankle joint, the imaging pictures are inaccurate and artifacts are generated. Now, when adjusting the angle of the ankle joint positioning, usually a foam board is placed under the sole of the foot to support the front end of the sole to lift or press down. However, the operation of placing the foam board is very troublesome, and it is necessary to adjust the thickness of the foam board one by one to make the ankle joint positioning meet the required requirements, which is very time-consuming. Content of the Utility Model

[0004] The purpose of the utility model is to provide an ankle joint positioning assistance device to solve the problem that in magnetic resonance imaging of the ankle joint, due to inaccurate positioning of the patient, the imaging pictures are inaccurate and artifacts are generated as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides an ankle joint positioning assistance device, including a horizontal guard plate and a vertical guard plate. One end of the horizontal guard plate and the bottom end of the vertical guard plate are hinged and connected through an adjustment component. The adjustment component includes a fixing plate. The bottom side of the fixing plate is fixedly connected with one end of the horizontal guard plate. A rotating shaft placement groove is opened on the top surface of the fixing plate. A rotatable rotating shaft is arranged inside the rotating shaft placement groove. A connecting plate is installed on the middle top side of the rotating shaft. The top of the connecting plate is installed inside the bottom of the vertical guard plate. Threaded holes are opened at both ends of the opposite outer walls of the fixing plate and close to the rotating shaft placement groove. A positioning bolt is connected to the outside of each threaded hole. One end of the positioning bolt is threaded through the threaded hole and can press and fix the convex shaft.

[0006] Preferably, two straps are arranged on the top of the horizontal guard plate. One ends of the two straps are fixed on one side of the horizontal guard plate, and the other ends are adhered to the other side of the horizontal guard plate through magic tape.

[0007] Preferably, a protractor is installed on one side of the top of the fixed plate.

[0008] Preferably, a slot is provided on the bottom surface of the vertical guard plate, and the top of the connecting plate is inserted into the slot for plug-in fit.

[0009] Preferably, a locking bolt is installed on the outer side of the bottom of the vertical guard plate. One end of the locking bolt threadedly penetrates the outer wall of the vertical guard plate and extends into the slot and can be abutted against the side surface of the connecting plate.

[0010] Preferably, notches are provided on both side walls of the top of the fixed plate and near the connecting plate. The two notches are both communicated with the rotating shaft placement groove, and the width of the notch is greater than the width of the connecting plate.

[0011] Preferably, convex shafts are installed at both ends of the rotating shaft. Circular holes are provided on the inner walls at both ends of the rotating shaft placement groove. The threaded hole is communicated with the circular hole and is coaxially arranged. The two convex shafts are respectively inserted into the two circular holes for rotational connection. The end of the positioning bolt threadedly passes through the threaded hole and then is inserted into the circular hole and abuts against the end of the convex shaft.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] In this ankle joint positioning assistance device, after the front end of the instep is lifted or pressed down through the adjustment component, the angle of the instep relative to the ankle joint in the vertical direction can be adjusted, which is convenient for obtaining ideal magnetic resonance imaging pictures. Through the setting of the protractor, the rotation angle of the transverse guard plate can be accurately grasped, which is convenient for accurately adjusting the positioning angle of the ankle joint. Through the strap, the instep can be fixed, so that the sole fits on the transverse guard plate, which is convenient for imaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the structure of the adjustment component in the present utility model;

[0016] Figure 3 is a schematic diagram of the internal structure of the fixed plate in the present utility model;

[0017] Figure 4 is a schematic diagram of the internal structure of the vertical guard plate in the present utility model.

[0018] The meanings of the various reference numerals in the figure are as follows:

[0019] 1. Horizontal guard plate; 2. Vertical guard plate; 21. Slot; 22. Locking bolt; 3. Adjusting assembly; 31. Fixed plate; 311. Notch; 312. Threaded hole; 313. Positioning bolt; 32. Rotating shaft placement groove; 321. Round hole; 33. Rotating shaft; 331. Convex shaft; 34. Connecting plate; 4. Straps; 5. Protractor; 6. Cushion block. Detailed implementation manner

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] The present invention provides an ankle joint positioning assistance device, as Figures 1 - 4 shown, including a horizontal guard plate 1 and a vertical guard plate 2. One end of the horizontal guard plate 1 and the bottom end of the vertical guard plate 2 are hinged and connected through an adjusting assembly 3, and the whole device forms a structure similar to an L shape for fixing the foot; a cushion block 6 is arranged between the horizontal guard plate 1 and the vertical guard plate 2 near the adjusting assembly 3 to ensure that the heel is kept in close contact with the device comfortably. The adjusting assembly 3 is used to drive the horizontal guard plate 1 to rotate up and down with the corner as the center of the circle.

[0022] The adjusting assembly 3 includes a fixed plate 31. The bottom side of the fixed plate 31 is fixedly connected to one end of the horizontal guard plate 1. A rotating shaft placement groove 32 is opened on the top surface of the fixed plate 31. A rotatable rotating shaft 33 is arranged inside the rotating shaft placement groove 32. A connecting plate 34 is installed on the middle top side of the rotating shaft 33. The top of the connecting plate 34 is installed inside the bottom of the vertical guard plate 2. Threaded holes 312 are opened at both ends of the opposite outer walls of the fixed plate 31 and close to the two ends of the rotating shaft placement groove 32. The two threaded holes 312 are both communicated with the rotating shaft placement groove 32. A positioning bolt 313 is connected to the outside of each threaded hole 312. One end of the positioning bolt 313 is threaded through the threaded hole 312 and can press and fix the convex shaft 331. The angle between the horizontal guard plate 1 and the vertical guard plate 2 is adjusted by the rotation of the rotating shaft 33, so that the patient's sole is lifted or pressed down. After adjustment, the positioning bolt 313 is tightened for positioning, so that the angle between the horizontal guard plate 1 and the vertical guard plate 2 is fixed, so that the patient's ankle reaches the required positioning.

[0023] In this embodiment, two straps 4 are arranged on the top of the horizontal guard plate 1. One end of the two straps 4 is fixed on one side of the horizontal guard plate 1, and the other end is adhered to the other side of the horizontal guard plate 1 through a magic tape. The foot can be tied to the horizontal guard plate 1 through the straps 4 to prevent the foot from sliding.

[0024] Specifically, a protractor 5 is installed on one side of the top of the fixing plate 31. The zero scale line of the protractor 5 points to the vertical direction. Through the setting of the protractor 5, the rotation angle of the horizontal guard plate 1 can be accurately grasped, facilitating the precise adjustment of the ankle joint positioning angle.

[0025] Furthermore, a slot 21 is provided on the bottom surface of the vertical guard plate 2. The top of the connecting plate 34 is inserted into the slot 21 for plug-in cooperation. The setting of the slot 21 facilitates the installation of the vertical guard plate 2 and also facilitates disassembly.

[0026] Furthermore, a locking bolt 22 is installed on the outer side of the bottom of the vertical guard plate 2. One end of the locking bolt 22 threadedly penetrates the outer wall of the vertical guard plate 2 and extends into the slot 21 and can abut against the side surface of the connecting plate 34. By tightening the locking bolt 22 and pressing it against the connecting plate 34, it is convenient to lock and fix the vertical guard plate 2 after installation.

[0027] Furthermore, notches 311 are provided on both side walls of the top of the fixing plate 31 and close to the connecting plate 34. Both notches 311 communicate with the rotating shaft placement groove 32. The width of the notches 311 is greater than the width of the connecting plate 34. The setting of the notches 311 provides an avoidance space for the rotation of the connecting plate 34, facilitating the movement of the connecting plate 34 without being hindered during the angle adjustment between the horizontal guard plate 1 and the vertical guard plate 2.

[0028] Furthermore, convex shafts 331 are installed at both ends of the rotating shaft 33. Circular holes 321 are provided on the inner walls at both ends of the rotating shaft placement groove 32. The threaded holes 312 are connected to the circular holes 321 and are coaxially arranged. The two convex shafts 331 are respectively inserted into the two circular holes 321 for rotational connection. The end of the positioning bolt 313 threadedly passes through the threaded hole 312 and then inserts into the circular hole 321 and abuts against the end of the convex shaft 331. The rotational connection between the convex shaft 331 and the circular hole 321 ensures that the rotating shaft 33 rotates more stably without shaking.

[0029] When the ankle joint positioning auxiliary device of the present utility model is in use, first place the heel at the corner where the vertical guard plate 2 and the horizontal guard plate 1 are connected, and support and pad it with the cushion block 6. The horizontal guard plate 1 is attached to the bottom surface of the foot sole, and the vertical guard plate 2 is attached to the back side of the calf. Then, bind the foot to the horizontal guard plate 1 through two straps 4; then, adjust the angle between the horizontal guard plate 1 and the vertical guard plate 2 by rotating the rotating shaft 33, so that the horizontal guard plate 1 rotates relative to the vertical guard plate 2, so that the corner between the horizontal guard plate 1 and the vertical guard plate 2 forms the required included angle, that is, drive the front end of the instep to lift or press down, facilitating imaging; and after adjustment, position by screwing the positioning bolt 313, so that the angle between the horizontal guard plate 1 and the vertical guard plate 2 is fixed, and the position of the horizontal guard plate 1 can be fixed. Among them, before the process of adjusting the angle, a positioning line can be drawn on the bottom side of the vertical guard plate 2, so that the positioning line coincides with the zero scale line of the protractor 5, thus making it more convenient to adjust the ankle joint positioning angle.

[0030] The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model, and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An ankle joint positioning auxiliary device, comprising a horizontal guard plate (1) and a vertical guard plate (2), characterized in that: One end of the transverse guard plate (1) and the bottom end of the vertical guard plate (2) are hingedly connected via an adjustment assembly (3). The adjustment assembly (3) comprises a fixing plate (31). The bottom side surface of the fixing plate (31) is fixedly connected to one end of the transverse guard plate (1). The top surface of the fixing plate (31) is provided with a shaft placement groove (32). A rotatable shaft (33) is arranged inside the shaft placement groove (32). A connecting plate (34) is installed on the middle top side of the shaft (33). The top of the connecting plate (34) is installed inside the bottom of the vertical guard plate (2). Threaded holes (312) are provided on two opposite outer walls of the fixing plate (31) and near both ends of the shaft placement groove (32). A positioning bolt (313) is connected to the outer side of each threaded hole (312). One end of the positioning bolt (313) is threadedly passed through the threaded hole (312) and can press and fix the convex shaft (331).

2. The ankle joint positioning auxiliary device according to claim 1, characterized in that: Two straps (4) are arranged on the top of the transverse guard plate (1), one end of the two straps (4) is fixed to one side of the transverse guard plate (1), and the other end is adhered to the other side of the transverse guard plate (1) by Velcro.

3. The ankle joint positioning auxiliary device according to claim 1, characterized in that: A protractor (5) is mounted on one side of the top of the fixing plate (31).

4. The ankle joint positioning auxiliary device according to claim 1, characterized in that: The bottom surface of the vertical guard plate (2) is provided with a slot (21), and the top of the connecting plate (34) is inserted into the slot (21) for plug-in engagement.

5. The ankle joint positioning auxiliary device according to claim 4, characterized in that: A locking bolt (22) is installed on the outer side of the bottom of the vertical guard plate (2), and one end of the locking bolt (22) is threadedly penetrates the outer wall of the vertical guard plate (2) and extends to the slot (21) and can be tightened against the side of the connecting plate (34).

6. The ankle joint positioning auxiliary device according to claim 1, characterized in that: Notches (311) are provided on both side walls of the top of the fixing plate (31) and close to the connecting plate (34). The two notches (311) are connected to the rotating shaft placement groove (32). The width of the notches (311) is greater than the width of the connecting plate (34).

7. The ankle joint positioning auxiliary device according to claim 1, characterized in that: Convex shafts (331) are installed at both ends of the rotating shaft (33); circular holes (321) are provided on the inner walls at both ends of the rotating shaft placement groove (32); the threaded hole (312) is connected to the circular hole (321) and is coaxially arranged; the two convex shafts (331) are respectively inserted into the two circular holes (321) for rotational connection; the end of the positioning bolt (313) is threadedly passed through the threaded hole (312) and then inserted into the circular hole (321) and abuts against the end of the convex shaft (331).

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