Mould for ankle joint function evaluation image examination

Abstract

The utility model relates to a mould for ankle joint function evaluation image examination, which comprises a bottom base plate, a shank cushion block, a rotating table, a pitching pull rod and a tensioning pull rod, the rotating table comprises a supporting rod, a swing frame and a foot pedal, and the supporting rod is arranged to be a telescopic rod and is slidably connected with the sliding groove; the swing frame is rotationally connected with the supporting rod. The foot pedal is rotationally connected with the swing frame; foot bandages are arranged on two sides of the foot pedal; the pitching pull rod is connected with a pedal; the two tensioning pull rods are connected with a foot pedal; according to the invention, evaluation can be carried out from two aspects of passive position and active movement of a patient, ankle joint introversion / extroversion, plantar flexion / dorsal extension, a front drawer test and load-bearing examination are carried out to comprehensively evaluate ankle joint functions and stability, the angle of ankle joint movement can be adjusted, and external force applied by stress examination can be controlled. The device is suitable for X-ray, CT and magnetic resonance imaging examination of ankle joints.

Description

Technical Field

[0001] The utility model relates to the technical field of orthopedic examination auxiliary tools, and particularly relates to a mold for ankle joint function evaluation imaging examination. Background Art

[0002] Ankle sprains are very common clinically. Among them, up to 20 - 30% of patients will develop chronic pain, chronic ankle instability, and secondary tendon injuries, ankle impingement, arthritis and a series of other diseases. One of the more important reasons is that the remodeling after ligament tear can show normal signals on magnetic resonance examination, but at this time the ligament function may have weakened. Therefore, early identification of ankle instability, especially mechanical instability, is of great significance for improving the prognosis of patients.

[0003] In the prior art, the functions of some molds applied to ankle dynamic examination are not comprehensive, mostly concentrated on one or two aspects of ankle varus / valgus, plantar flexion / dorsiflexion, stress examination, and weight-bearing examination, and it is impossible to comprehensively evaluate the ankle joint function with one mold. In addition, the structures and operations of the existing molds are mostly relatively complex. Summary of the Utility Model

[0004] Aiming at at least one of the above problems in the prior art, the purpose of the utility model is to provide a mold for ankle joint function evaluation imaging examination, which can evaluate from two aspects of the passive position and active movement of the patient, can perform ankle varus / valgus, plantar flexion / dorsiflexion, anterior drawer test, and weight-bearing examination to comprehensively evaluate the ankle joint function and stability, and can adjust the angle of ankle joint movement and control the external force applied in the stress examination, and is applicable to X-ray, CT and magnetic resonance imaging examinations of the ankle joint.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A mold for ankle joint function evaluation imaging examination, comprising:

[0007] A bottom substrate, with a chute opened at its front part;

[0008] A calf cushion, arranged at the rear part of the bottom substrate for supporting the patient's calf;

[0009] A rotating table, including a support rod, a swing frame and a foot pedal. The support rod is set as a telescopic rod and is slidably connected with the chute; the swing frame is rotatably connected to the top of the support rod to realize the left and right swing of the swing frame; the foot pedal is rotatably connected to the swing frame to realize the front and back flip of the foot pedal; foot straps are respectively arranged on both sides of the foot pedal for fixing the patient's foot;

[0010] The pitching pull rod, the front end of which is connected to the top of the rear side wall of the foot pedal;

[0011] The tensioning pull rods, two of which are provided; the front ends of the two tensioning pull rods are respectively connected to both sides of the middle part of the rear side wall of the foot pedal, and the two tensioning pull rods are symmetrically arranged.

[0012] Preferably, the swing frame is connected to the top of the support rod through a swing rotating shaft, and a swing gear knob is arranged at the end of the swing rotating shaft; a swing spring ejector pin is arranged on the rear side wall of the swing frame, the end of the swing spring ejector pin contacts the swing gear knob, and a swing angle scale is arranged on the swing gear knob.

[0013] Preferably, the foot pedal is connected to the swing frame through a flipping rotating shaft, and a flipping gear knob is arranged at the end of the flipping rotating shaft; a flipping spring ejector pin is arranged on the outer side wall of the swing frame, the end of the flipping spring ejector pin contacts the flipping gear knob, and a flipping angle scale is arranged on the flipping gear knob.

[0014] Preferably, both the swing spring ejector pin and the flipping spring ejector pin include a sleeve, a spring and an ejector pin, the spring and the ejector pin are sequentially arranged in the sleeve, and both ends of the spring are respectively connected to the bottom surface of the sleeve and the ejector pin; the end of the ejector pin is set as a convex arc surface.

[0015] Preferably, leg straps are respectively arranged on both sides of the calf cushion for fixing the calf of the patient; a flexible pad is arranged on the top surface of the calf cushion.

[0016] Preferably, a slider is arranged at the bottom of the support rod, and the slider is slidably installed in the chute; the support rod includes a sleeve and an inner rod, the inner rod is movably arranged in the sleeve, a locking screw hole is formed in the side wall of the sleeve, a locking bolt is screwed in the locking screw hole, and the inner end of the locking bolt contacts the outer wall of the inner rod.

[0017] Preferably, the swing frame is provided with an installation groove, and the foot pedal is rotatably connected in the installation groove.

[0018] Preferably, a placement groove is arranged on the rear side surface of the foot pedal for placing the foot of the patient.

[0019] Preferably, the pitching pull rod is connected to the foot pedal through a universal joint; the tensioning pull rod is connected to the foot pedal through a universal joint.

[0020] Preferably, the pitching pull rod is set as a telescopic rod, and the tensioning pull rod is set as a telescopic rod.

[0021] Due to the above technical solutions adopted by the present utility model, it has the following advantages:

[0022] 1. The mold for ankle joint function evaluation imaging examination provided by the present utility model can facilitate placing and fixing the patient's foot on the foot pedal by setting a foot pedal that can be flipped forward and backward, swung left and right, moved forward and backward, and moved up and down; by setting a pitch pull rod and a tension pull rod on the foot pedal, it can evaluate from two aspects of the patient's passive position and active movement, and can perform ankle joint plantar flexion / dorsiflexion, inversion / eversion, anterior drawer test, and weight-bearing examination to comprehensively evaluate the function and stability of the ankle joint, and can adjust the angle of ankle joint movement and control the external force applied in the stress examination, and is applicable to X-ray, CT, and magnetic resonance imaging examinations of the ankle joint.

[0023] 2. The mold for ankle joint function evaluation imaging examination provided by the present utility model can judge the movement degree of the patient's ankle by setting gear knobs at the ends of the flipping rotating shaft for front-back flipping and the swinging rotating shaft for left-right swinging of the foot pedal respectively, and setting spring ejector pins in contact with the gear knobs, and can judge the movement degree of the patient's ankle by the sound emitted when the spring ejector pins sequentially contact the teeth on the side wall of the gear knob; and an angle scale can be set on the gear knob to judge the movement degree of the patient's ankle by the change of the angle scale value. Description of the Drawings

[0024] Figure 1 is a three-dimensional structure diagram of the mold for ankle joint function evaluation imaging examination provided by an embodiment of the present utility model.

[0025] Figure 2 is another perspective three-dimensional structure diagram of the mold for ankle joint function evaluation imaging examination provided by an embodiment of the present utility model.

[0026] Figure 3 is a structural cross-sectional view of the swinging spring ejector pin and the flipping spring ejector pin of the mold for ankle joint function evaluation imaging examination provided by an embodiment of the present utility model.

[0027] Reference numerals in the drawings:

[0028] 1 is the bottom substrate, 110 is the chute, 2 is the calf cushion block, 210 is the leg strap, 220 is the flexible pad, 310 is the support rod, 311 is the slider, 312 is the locking bolt, 320 is the swing frame, 321 is the swing rotating shaft, 322 is the swing gear knob, 323 is the swing spring ejector pin, 324 is the installation groove, 325 is the swing angle scale, 330 is the foot pedal, 331 is the foot strap, 332 is the flipping rotating shaft, 333 is the flipping gear knob, 334 is the flipping spring ejector pin, 335 is the placement groove, 336 is the flipping angle scale, 341 is the sleeve, 342 is the spring, 343 is the ejector pin, 344 is the end cap, 4 is the pitching pull rod, 5 is the tensioning pull rod. Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0031] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "assembly", "installation", "connection" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] A mold for ankle joint function evaluation imaging examination provided by the utility model can conveniently place and fix the patient's foot through a foot pedal and a foot strap. By rotatably mounting the foot pedal on the swing frame in a front-back direction, the foot pedal can be autonomously flipped back and forth, so as to perform plantar flexion / dorsiflexion examination on the patient's ankle; by rotatably mounting the swing frame on the support rod in a left-right direction, the swing frame can drive the foot pedal to swing left and right, so as to perform inversion / eversion examination on the patient's ankle; by arranging a pitching pull rod at the top of the foot pedal, the patient can pull or push the pitching pull rod by himself, driving the foot pedal to flip back and forth, so as to perform passive plantar flexion / dorsiflexion movement of the ankle; by arranging tension pull rods on both sides of the foot pedal respectively, the patient can pick up or press down one tension pull rod by himself, or pick up and press down two tension pull rods respectively to operate the foot pedal to swing left and right, so as to perform passive inversion / eversion (left-right swing) movement or examination of the ankle; enabling the patient to simultaneously pull two tension pull rods with the same pulling force by himself to operate the foot pedal to apply force towards the patient's foot, so as to perform weight-bearing movement or examination of the ankle; enabling the patient to simultaneously pick up or press down two tension pull rods with the same pulling force by himself to operate the telescopic movement of the support rod, driving the foot pedal to move up or down, so as to perform anterior drawer test of the ankle.

[0033] Next, the embodiments of the utility model will be described in detail with reference to the accompanying drawings.

[0034] Embodiment

[0035] Please refer to Figure 1 and Figure 2 A mold for ankle joint function evaluation imaging examination provided by this embodiment includes a bottom substrate 1, a calf cushion 2, a rotating table, a pitching pull rod 4 and tension pull rods 5. A chute 110 is provided at the front of the bottom substrate 1; the calf cushion 2 is arranged at the rear of the bottom substrate 1 to support the patient's calf; the rotating table includes a support rod 310, a swing frame 320 and a foot pedal 330. The support rod 310 is set as a telescopic rod and is slidably connected with the chute 110; the swing frame 320 is rotatably connected to the top of the support rod 310 to realize the left-right swing of the swing frame 320; the foot pedal 330 is rotatably connected to the swing frame 320 to realize the front-back flipping of the foot pedal 330; foot straps 331 are respectively arranged on both sides of the foot pedal 330 to fix the patient's foot; the front end of the pitching pull rod 4 is connected to the top of the rear side wall of the foot pedal 330; there are two tension pull rods 5; the front ends of the two tension pull rods 5 are respectively connected to the middle sides of the rear side wall of the foot pedal 330, and the two tension pull rods 5 are symmetrically arranged.

[0036] The mold for ankle joint function evaluation imaging examination in this embodiment can place the patient's calf on the calf cushion block 2 during use. Move the support rod 310 along the sliding groove 110 to drive the foot pedal 330 to move. The patient places the foot on the foot pedal 330 and fixes the foot on the foot pedal 330 through the foot strap 331. Then, the ankle joint function of the patient can be comprehensively evaluated in two aspects: passive position and active movement as needed.

[0037] When performing passive position evaluation, medical staff can operate the foot pedal 330 to flip back and forth to perform plantar flexion / dorsiflexion (front-back flexion and extension) examination of the ankle; can operate the swing frame 320 to drive the foot pedal 330 to swing left and right to perform inversion / eversion (left-right swing) examination of the ankle; can operate the foot pedal 330 to apply force towards the patient's foot to perform weight-bearing examination of the ankle; can operate the support rod 310 to drive the foot pedal 330 to move up and down through telescoping to perform anterior drawer test of the ankle.

[0038] The patient can pull the pitching pull rod 4 by himself to operate the foot pedal 330 to flip back and forth, so as to perform passive plantar flexion / dorsiflexion (front-back flexion and extension) movement or examination of the ankle; can pick up or press down a tensioning pull rod 5 by himself, or pick up and press down two tensioning pull rods 5 respectively to operate the foot pedal 330 to swing left and right, so as to perform passive inversion / eversion (left-right swing) movement or examination of the ankle; can pull the two tensioning pull rods 5 simultaneously with the same pulling force by himself to operate the foot pedal 330 to apply force towards the patient's foot, so as to perform weight-bearing movement or examination of the ankle; can pick up or press down the two tensioning pull rods 5 simultaneously with the same pulling force by himself to operate the support rod 310 to telescope, so as to drive the foot pedal 330 to move up or down, so as to perform anterior drawer test of the ankle.

[0039] When performing active movement evaluation, the patient moves the ankle joint by himself to drive the foot pedal 330 to move. The foot pedal 330 flips back and forth to perform plantar flexion / dorsiflexion (front-back flexion and extension) examination of the ankle; the foot pedal 330 drives the swing frame 320 to swing left and right to perform inversion / eversion (left-right swing) examination of the ankle.

[0040] Specifically, the foot strap 331 is set as a magic tape. Through the foot strap 331, it can be applicable to feet of different sizes and is convenient for fixing feet of different sizes on the foot pedal 330.

[0041] Specifically, the bottom base plate 1 is set as a horizontal rectangular plate. The calf cushion block 2 is set as a horizontal rectangular block and is fixedly connected to the rear part of the bottom base plate 1. The sliding groove 110 is set as a horizontal rectangular opening groove and is opened in the front part of the bottom base plate 1. Among them, the front refers to the direction close to the patient, that is, Figure 1 the left side shown,Figure 2 the right side as shown; the rear refers to the direction away from the patient, i.e., Figure 1 the right side as shown, Figure 2 the left side as shown. The turntable is arranged at the position of the front chute 110 of the bottom substrate 1. The support rod 310 is arranged as a vertical rod, and the bottom of the support rod 310 is slidably arranged in the chute 110 to drive the whole turntable to move back and forth along the chute 110. The foot pedal 330 is arranged as a vertical plate and can be turned back and forth and swing left and right along with the swing frame 320. The foot strap 331 is arranged in the middle of the foot pedal 330.

[0042] Please refer to Figure 1 , in some embodiments, the swing frame 320 is connected to the top of the support rod 310 through a swing rotating shaft 321, and a swing gear knob 322 is arranged at the end of the swing rotating shaft 321; a swing spring ejector pin 323 is arranged on the rear side wall of the swing frame 320, the end of the swing spring ejector pin 323 contacts the swing gear knob 322, and a swing angle scale 325 is arranged on the swing gear knob 322.

[0043] The patient can pull the two tension rods 5. When the pulling forces on the two tension rods 5 are different, the swing frame 320 will drive the foot pedal 330 to swing left and right, so as to perform passive varus / valgus (left and right swing) movement, which is suitable for varus / valgus examination; and, since a circle of teeth is arranged on the side wall of the swing gear knob 322, when the swing frame 320 drives the foot pedal 330 to swing left and right, as the swing gear knob 322 rotates, the end of the swing spring ejector pin 323 will make a sound successively when contacting different teeth. The patient can judge the angle of varus / valgus (left and right swing) movement of the patient's foot through the number of sounds, or can also judge the angle of varus / valgus (left and right swing) of the patient's foot through the change of the scale value of the swing angle scale 325.

[0044] For example, if the central angle between adjacent teeth on the swing gear knob 322 is 10°, and the angle scale value of one grid on the swing gear knob 322 is 10°, when the patient pulls the two tension rods 5 with different pulling forces to make the swing frame 320 drive the foot pedal 330 to swing left and right, if a sound is heard when the end of the swing spring ejector pin 323 contacts the teeth of the rotating swing gear knob 322, it means that the angle of varus / valgus (left and right swing) movement of the patient's foot is 10°. At this time, if observing the change of the scale value of the swing angle scale 325 is also 10°.

[0045] Specifically, the angle scale is arranged in a circular pattern on the end face of the swing gear knob 322. A scale pointer is arranged on the rear side wall of the swing frame 320, which is convenient to obtain the left and right swing angle of the patient's ankle through the change value of the swing angle scale 325 indicated by the scale pointer.

[0046] In some embodiments, the foot pedal 330 is connected to the swing frame 320 through a flipping rotating shaft 332, and a flipping gear knob 333 is provided at the end of the flipping rotating shaft 332; a flipping spring ejector pin 334 is provided on the outer side wall of the swing frame 320, the end of the flipping spring ejector pin 334 contacts the flipping gear knob 333, and a flipping angle scale 336 is provided on the flipping gear knob 333.

[0047] The patient can independently pull the pitching rod 4 to drive the foot pedal 330 to flip back and forth, so as to perform plantar flexion / dorsiflexion (front and back flexion and extension) movements, which is suitable for plantar flexion / dorsiflexion examination; and, since a ring of teeth is provided on the side wall of the flipping gear knob 333, when the foot pedal 330 flips back and forth, as the flipping gear knob 333 rotates, the end of the flipping spring ejector pin 334 will make sounds in sequence when contacting different teeth, and the patient can judge the angle of the plantar flexion / dorsiflexion (front and back flexion and extension) movement of the patient's foot through the number of sounds, or, the angle of the plantar flexion / dorsiflexion (front and back flexion and extension) of the patient's foot can also be judged through the change of the scale value of the flipping angle scale 336.

[0048] For example, if the central angle between adjacent teeth on the flipping gear knob 333 is 10°, and the angle scale value of one grid on the flipping gear knob 333 is 10°, when the patient pulls the pitching rod 4 to drive the foot pedal 330 to flip back and forth, if a sound is heard when the end of the flipping spring ejector pin 334 contacts the teeth of the rotating flipping gear knob 333, it means that the angle of the plantar flexion / dorsiflexion (front and back flexion and extension) movement of the patient's foot is 10°. At this time, if the change of the scale value of the flipping angle scale 336 is also observed to be 10°.

[0049] Specifically, the angle scale is arranged in a circle on the end face of the flipping gear knob 333. A scale pointer is provided on the outer side wall of the swing frame 320, which is convenient for obtaining the front and back flipping angle of the patient's ankle through the change value of the flipping angle scale 336 indicated by the scale pointer.

[0050] Please refer to Figure 1 and Figure 3 In some embodiments, both the swing spring ejector pin 323 and the flipping spring ejector pin 334 include a sleeve 341, a spring 342 and an ejector pin 343. The spring 342 and the ejector pin 343 are sequentially arranged in the sleeve 341, and both ends of the spring 342 are respectively connected to the bottom surface of the sleeve 341 and the ejector pin 343; the end of the ejector pin 343 is set as a convex arc surface, so that the ejector pin 343 can, under the elastic force of the spring 342, as the swing gear knob 322 or the flipping gear knob 333 rotates, make sounds in sequence when the end of the ejector pin 343 contacts different teeth.

[0051] Specifically, the inner wall of the sleeve 341 is set as a cylindrical surface, one end of which is closed and the other end is open. The spring 342 is arranged in the sleeve 341, and one end of the spring 342 is connected to the bottom surface of the sleeve 341. The ejector pin 343 is set as a cylinder. One end of the ejector pin 343 is arranged in the sleeve 341 and is connected to the other end of the spring 342. The other end of the ejector pin 343 extends out of the sleeve 341 as the end that contacts the teeth of the swing gear knob 322 or the flip gear knob 333.

[0052] An end cap 344 is arranged at the other end of the sleeve 341. The end cap 344 is provided with a through hole, and the ejector pin 343 is arranged in the through hole. The end cap 344 is connected to the end face of the other end of the sleeve 341 through an adhesive layer or screws.

[0053] The outer wall of the sleeve 341 is connected to the rear side wall or the outer side wall of the swing frame 320. The outer wall of the sleeve 341 is set as a square column surface, which is convenient for the sleeve 341 to be adhesively connected, welded or screwed to the rear side wall or the outer side wall of the swing frame 320.

[0054] The central axis of the ejector pin 343 of the swing spring ejector pin 323 intersects and is perpendicular to the rotation axis of the swing gear knob 322. The central axis of the ejector pin 343 of the flip spring ejector pin 334 intersects and is perpendicular to the rotation axis of the flip gear knob 333. The end of the ejector pin 343 is set as a convex hemispherical surface.

[0055] Please refer to Figure 1 and Figure 2 , in some embodiments, leg straps 210 are respectively arranged on both sides of the calf cushion 2 for fixing the calf of the patient.

[0056] Specifically, the leg strap 210 is set as a magic tape. The leg strap 210 is arranged in the middle of the calf cushion 2.

[0057] A flexible pad 220 is arranged on the top surface of the calf cushion 2 to improve the comfort of the patient when placing the calf. The flexible pad 220 is set as a horizontal rectangular pad.

[0058] Specifically, the flexible pad 220 is set as a sponge pad. For example, a sponge pad is connected to the top surface of the calf cushion 2.

[0059] Please refer to Figure 2 , in some embodiments, a slider 311 is arranged at the bottom of the support rod 310, and the slider 311 is slidably installed in the chute 110.

[0060] The support rod 310 includes a sleeve and an inner rod. The inner rod is movably arranged in the sleeve. A locking screw hole is formed on the side wall of the sleeve, and a locking bolt 312 is screwed in the locking screw hole. The inner end of the locking bolt 312 contacts the outer wall of the inner rod. The support rod 310 forms a telescopic rod through the combination of the sleeve and the inner rod movably arranged in the sleeve. When it is necessary to telescopically adjust the length of the support rod 310, rotate the locking bolt 312 so that the inner end of the locking bolt 312 located in the sleeve does not contact the inner rod, then the inner rod can be moved in the sleeve to telescopically adjust the length of the support rod 310. When it is necessary to fix the length of the support rod 310, rotate the locking bolt 312 in the reverse direction so that the inner end of the locking bolt 312 located in the sleeve contacts and presses against the inner rod, then the length of the support rod 310 can be fixed.

[0061] Specifically, the slider 311 is arranged as a rectangular block.

[0062] Please refer to Figure 1 and Figure 2 , in some embodiments, the swing frame 320 is provided with a mounting groove 324, and the foot pedal 330 is rotatably connected in the mounting groove 324.

[0063] Specifically, the mounting groove 324 is arranged at the top of the swing frame 320 and is a rectangular groove. The lower part of the foot pedal 330 is rotatably mounted in the mounting groove 324 through a turning shaft 332. The turning shaft 332 is parallel to the plate surface of the foot pedal 330.

[0064] The middle position of the lower part of the swing frame 320 is rotatably connected to the top of the support rod 310 through a swing shaft 321, and the swing shaft 321 is perpendicular to the turning shaft 332.

[0065] Please refer to Figure 1 , in some embodiments, a placement groove 335 is provided on the rear side surface of the foot pedal 330 for placing the patient's foot, facilitating the patient to stably place the foot in the placement groove 335, enabling the bottom surface of the placement groove 335 to play a stable supporting role for the patient's foot, and enabling the two side surfaces of the placement groove 335 to play a role in limiting the two sides of the patient's foot.

[0066] Specifically, the placement groove 335 is arranged as a rectangular groove, which is opened at the middle position of the rear side surface of the foot pedal 330. The top end of the placement groove 335 opens on the top surface of the foot pedal 330. The patient's toes are located at the top opening of the groove 335, and the sole of the foot is placed on the bottom surface of the placement groove 335.

[0067] In some embodiments, the pitch pull rod 4 and the foot pedal 330 are connected by a universal joint, so that when the patient pulls the pitch pull rod 4, the pitch pull rod 4 can generate an angle through the universal joint to match the pulling direction of the patient. The tension pull rod 5 and the foot pedal 330 are connected by a universal joint, so that when the patient pulls the tension pull rod 5, the tension pull rod 5 can generate an angle through the universal joint to match the pulling direction of the patient.

[0068] Please refer to Figure 1 and Figure 2 In some embodiments, the pitch pull rod 4 is set as a telescopic rod, and the tension pull rod 5 is set as a telescopic rod, so that when the patient pulls the pitch pull rod 4 and the tension pull rod 5, the pitch pull rod 4 and the tension pull rod 5 can be telescoped according to actual needs.

[0069] Each telescopic rod can adopt a telescopic structure in which the inner rod moves inside the sleeve.

[0070] For the mold for ankle joint function evaluation imaging examination in this embodiment, the materials of all components are non-magnetic materials applicable to magnetic resonance examination.

[0071] When performing magnetic resonance examination, place the surface coil / soft coil above and below the ankle joint, and wrap the ankle joint with a sponge pad or strap for magnetic resonance examination. When performing CT or X-ray examination, no coil needs to be placed, and then the following steps can be carried out:

[0072] Taking the big toe as a reference standard, the patient actively performs ankle varus / valgus movement by tilting inwards and outwards in the coronal plane. The patient can operate the foot pedal 330 to swing left and right by self-picking up or pressing down a tension pull rod 5 upwards, or respectively picking up and pressing down two tension pull rods 5 upwards to perform passive varus / valgus movement, and the angle is quantified by the angle scale on the swing gear knob 322. For example, every time it rotates 10°, the thimble 343 of the swing spring thimble 323 touches the gear of the swing gear knob 322 and makes a sound.

[0073] The patient autonomously performs active dorsiflexion and plantar flexion activities by moving forward (the direction close to the patient's body) and backward (the direction away from the patient's body) through the ankle; by pulling the foot pedal 330 forward or backward with the pitch pull rod 4 at the top, passive dorsiflexion / plantar flexion activities can be performed.

[0074] The patient simultaneously pulls the tension pull rods 5 on both sides with the same pulling force. Through the sliding of the support rod 310 along the chute 110, the foot pedal 330 is driven to move towards the patient, so as to realize pulling the foot towards the direction close to the patient's body, which is equivalent to applying an external force on the sole for weight-bearing examination, thus simulating the X-ray examination of ankle joint weight-bearing.

[0075] The patient simultaneously lifts or presses down the tension rods 5 on both sides upwards, causing the support rod 310 to expand and contract, thereby driving the foot pedal 330 to move up and down for performing the anterior drawer test.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mold for imaging examination of ankle joint function evaluation, characterized in that, Comprising: A bottom substrate (1) with a chute (110) opened at its front part; A calf cushion block (2) arranged at the rear part of the bottom substrate (1) for supporting the patient's calf; A rotating table, including a support rod (310), a swing frame (320) and a foot pedal (330), wherein the support rod (310) is set as a telescopic rod and is slidably connected with the chute (110); the swing frame (320) is rotatably connected with the top of the support rod (310) to realize the left - right swing of the swing frame (320); the foot pedal (330) is rotatably connected with the swing frame (320) to realize the front - back flipping of the foot pedal (330); foot straps (331) are respectively arranged on both sides of the foot pedal (330) for fixing the patient's feet; A pitching pull rod (4) whose front end is connected to the top of the rear side wall of the foot pedal (330); Tensioning pull rods (5), two of them are provided; the front ends of the two tensioning pull rods (5) are respectively connected to both sides of the middle part of the rear side wall of the foot pedal (330), and the two tensioning pull rods (5) are symmetrically arranged.

2. The mold for ankle joint function evaluation imaging examination according to claim 1, characterized in that, The swing frame (320) is connected with the top of the support rod (310) through a swing rotating shaft (321), and a swing gear knob (322) is arranged at the end of the swing rotating shaft (321); a swing spring ejector pin (323) is arranged on the rear side wall of the swing frame (320), the end of the swing spring ejector pin (323) contacts the swing gear knob (322), and a swing angle scale (325) is arranged on the swing gear knob (322).

3. The mold for ankle joint function evaluation imaging examination according to claim 2, wherein The foot pedal (330) is connected with the swing frame (320) through a flipping rotating shaft (332), and a flipping gear knob (333) is arranged at the end of the flipping rotating shaft (332); a flipping spring ejector pin (334) is arranged on the outer side wall of the swing frame (320), the end of the flipping spring ejector pin (334) contacts the flipping gear knob (333), and a flipping angle scale (336) is arranged on the flipping gear knob (333).

4. The mold for ankle joint function evaluation imaging examination according to claim 3, characterized in that Both the swing spring ejector pin (323) and the flipping spring ejector pin (334) include a sleeve (341), a spring (342) and an ejector pin (343), the spring (342) and the ejector pin (343) are sequentially arranged in the sleeve (341), and both ends of the spring (342) are respectively connected with the bottom surface of the sleeve (341) and the ejector pin (343); the end of the ejector pin (343) is set as a convex arc surface.

5. The mold for ankle joint function evaluation imaging examination according to claim 1, wherein Leg straps (210) are respectively arranged on both sides of the calf cushion block (2) for fixing the patient's calves; a flexible pad (220) is arranged on the top surface of the calf cushion block (2).

6. The mold for ankle joint function evaluation imaging examination according to claim 1, wherein A slider (311) is provided at the bottom of the support rod (310), and the slider (311) is slidably installed in the chute (110); the support rod (310) includes a sleeve and an inner rod, the inner rod is movably arranged in the sleeve, a locking screw hole is formed in the side wall of the sleeve, a locking bolt (312) is screwed in the locking screw hole, and the inner end of the locking bolt (312) is in contact with the outer wall of the inner rod.

7. The mold for ankle joint function evaluation imaging examination according to claim 1, characterized in that The swing frame (320) is provided with a mounting groove (324), and the foot pedal (330) is rotatably connected in the mounting groove (324).

8. The mold for ankle joint function evaluation imaging examination according to claim 1, characterized in that, A placement groove (335) is provided on the rear side of the foot pedal (330) for placing the patient's foot.

9. The mold for ankle joint function evaluation imaging examination according to claim 1, wherein, The pitching pull rod (4) is connected to the foot pedal (330) through a universal joint; the tensioning pull rod (5) is connected to the foot pedal (330) through a universal joint.

10. The mold for ankle joint function evaluation imaging examination according to any one of claims 1-9, characterized in that, The pitching pull rod (4) is provided as a telescopic rod, and the tensioning pull rod (5) is provided as a telescopic rod.

Images