Auxiliary positioning and supporting device for wrist magnetic resonance examination

Abstract

The utility model relates to an auxiliary positioning and supporting device for wrist magnetic resonance examination. The auxiliary positioning and supporting device comprises a lifting mechanism, a fixing mechanism, a front arm bearing mechanism and an upper arm bearing mechanism. The fixing mechanism comprises a fixing base, an arc-shaped plate and an arc-shaped groove, the front arm bearing mechanism comprises a front arm bearing plate and a protrusion, and the upper arm bearing mechanism comprises an upper arm bearing plate and a connecting piece. When inspection is carried out, the height is adjusted through the lifting mechanism, the front arm bearing plate is axially rotated to enable the protrusion to slide left and right in the arc-shaped groove, the upper arm bearing plate is driven to swing up and down so as to adjust the vertical position of the upper arm, and the upper arm bearing plate slides front and back in the length direction of the front arm bearing plate so as to adjust the horizontal position of the upper arm. The wrist portion is positioned in the magnetic resonance examination apparatus. Through multi-dimensional adjustment of the lifting mechanism, the forearm bearing mechanism and the upper arm bearing mechanism, the positions of the forearm and the upper arm are adjusted, the body position of an examined person is comfortable during examination, the examined person is not prone to moving, the success rate of examination is increased, and time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an auxiliary positioning support device for magnetic resonance examination of wrist. Background Art

[0002] With the rapid development of medicine, high-field magnetic resonance scanners (3.0T) have been widely used, and magnetic resonance imaging of the palm or wrist joint has received more attention. The anatomical structure of the palm and wrist joint is complex and contains many small structures. Magnetic resonance imaging (MRI) is usually an ideal imaging method when evaluating various traumas and pathological conditions in this area. It can not only show changes in bone structure, but also clearly show fine anatomical structures such as tendons, ligaments, and articular cartilage and their lesions. However, the scanning field of view of the palm and wrist joint is relatively small, and it is located on both sides of the human body. It is difficult to place it in the center of the magnetic field for scanning, which increases the difficulty of scanning.

[0003] Palm or wrist MRI examinations are usually performed in the prone position. The examination process is time-consuming, and the patient's upper limbs raised for too long will cause shoulder paralysis or pain, making it difficult to complete the examination, especially for older patients or patients with periarthritis of the shoulder. In addition, lying prone for a long time may cause the patient to have difficulty breathing, which will directly affect the success rate of the examination and the image quality.

[0004] At present, the lateral position can be used for magnetic resonance examination of the palm or wrist. The lateral position is close to the sleeping position of the human body, which makes the patient feel comfortable. The upper arm and forearm on the affected side are supported by rubber pads, cotton cloth, etc., which reduces the burden on the elbow and shoulder joints, and can keep the palm or wrist on the examined side still for a long time, eliminating the motion artifacts of the limbs. However, when the front swing position is examined, the support of the upper arm and forearm on the examined side still adopts a rough support method, such as using auxiliary pads and cotton cloth to raise it, which is at the same horizontal position as the magnetic resonance scanner, and then manually adjusting the position of the upper arm and forearm of the examinee, which is time-consuming. Moreover, the width of each person's body is different. In order to make the upper arm and forearm of the examined side of the examinee comfortable to achieve a good support effect, more auxiliary pads and cotton cloth are needed, which makes the placement process time-consuming and easy to shift and collapse. Therefore, how to develop an auxiliary device with good support and positioning effect, adjustable height and material compatible with magnetic resonance examination is an urgent problem to be solved. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide an auxiliary positioning support device for magnetic resonance examination of the wrist, including a lifting mechanism, a fixed seat arranged on the top of the lifting mechanism, a forearm support plate rotatably arranged on the fixed seat, and an upper arm support plate slidably arranged on the side of the forearm support plate. Through the multi-dimensional adjustment of the lifting mechanism, the forearm support plate and the upper arm support plate, the position of the forearm and the upper arm can be adjusted, so that the patient can be in a comfortable position during the examination and is not easy to move, thereby improving the success rate of magnetic resonance examination and saving examination time.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An auxiliary positioning support device for magnetic resonance examination of the wrist, the auxiliary positioning support device cooperates with the magnetic resonance examination equipment, the auxiliary positioning support device comprises a lifting mechanism, a fixing mechanism arranged on the top of the lifting mechanism, a forearm supporting mechanism rotatably arranged on the fixing mechanism, and an upper arm supporting mechanism slidably arranged on the side of the forearm supporting mechanism; the fixing mechanism comprises a fixing seat and an arc-shaped plate arranged on the top of the fixing seat, the bottom of the fixing seat is fixedly connected to the lifting mechanism, the arc-shaped plate has a concave part, and an arc-shaped groove is formed in the width direction of the concave part; the forearm supporting mechanism comprises a forearm supporting plate, the bottom of the forearm supporting plate cooperates with the concave part of the arc-shaped plate, A protrusion having a width corresponding to that of the arc-shaped groove is formed at the bottom of the forearm support plate, wherein the protrusion can be slidably located in the arc-shaped groove; the upper arm support mechanism comprises an upper arm support plate, one end of which is slidably connected to the side of the forearm support plate through a connecting piece, and the other end of the upper arm support plate is tilted upward at an angle of θ and extends to the outside; when performing an examination, the height is adjusted by the lifting mechanism, and the forearm support plate is axially rotated to make the protrusion slide left and right in the arc-shaped groove, driving the upper arm support plate to swing up and down to adjust the vertical position of the upper arm, and the upper arm support plate slides forward and backward along the length direction of the forearm support plate to adjust the horizontal position of the upper arm, so that the wrist is positioned in the magnetic resonance examination equipment.

[0008] Furthermore, the connecting member is provided with a rotating shaft on the middle part of a side away from the upper arm supporting plate, and the upper and lower ends of the rotating shaft are clamped in the slide groove, and the upper arm supporting plate is driven to swing left and right in the length direction of the forearm supporting plate through the rotating shaft; the swing angle of the upper arm supporting plate relative to the forearm supporting plate is 0-20°; the rotatable angle of the forearm supporting plate relative to the arc plate is 0-40°; the other end of the upper arm supporting plate is tilted upward at an angle of θ of 0-60°.

[0009] Furthermore, the lifting mechanism includes a top plate, a scissors-type lifter, a hydraulic rod and a bottom plate, the top plate is connected to a fixed seat, a first side plate is provided on both sides of the bottom of the top plate, and a second side plate is provided on both sides of the top of the bottom plate, the scissors-type lifter includes at least two scissor arms, the two scissor arms are relatively arranged between the top plate and the bottom plate, the scissor arms are connected by a hinge, the upper part of the scissor arm has a first end and a second end, a first slot is provided on the first side plate, the first end is slidably mounted in the first slot, and the second end is rotatably connected to the first side plate, the lower part of the scissor arm has a third end and a fourth end, a second slot is provided on the second side plate, the third end is slidably mounted in the second slot, and the fourth end is rotatably connected to the second side plate, one end of the hydraulic rod is rotatably connected to the first ends of the two relatively arranged scissor arms, and the other end of the hydraulic rod is rotatably connected to the fourth ends of the two relatively arranged scissor arms.

[0010] Furthermore, the number of the scissor arms is four, the four scissor arms are arranged in pairs, and the two scissor arms are connected by a hinge.

[0011] Furthermore, two opposite inner sides of the arc-shaped groove are provided with limiting grooves, and two sides of the protrusion are correspondingly provided with limiting pulleys, and the limiting pulleys are slidably mounted in the limiting grooves.

[0012] Furthermore, the forearm supporting plate includes a first supporting plate and a second supporting plate, one end of the first supporting plate is provided with a strip groove, one end of the second supporting plate is provided with a strip rod, and the strip rod is movably inserted in the strip groove; the upper arm supporting mechanism also includes an extension plate, the extension plate is slidably arranged at the bottom of the upper arm supporting plate, the extension plate is provided with a slide groove, the bottom of the upper arm supporting plate is provided with a slide rail, and the slide rail is slidably mounted in the slide groove.

[0013] Furthermore, a rotating component is provided between the fixing seat and the top plate, and the fixing seat is rotated relative to the top plate by the rotating component, and the rotation angle is 0-30°.

[0014] The utility model has the following advantages:

[0015] 1. The utility model is an auxiliary positioning support device for wrist magnetic resonance examination, comprising a lifting mechanism, a fixing mechanism arranged on the top of the lifting mechanism, a forearm supporting mechanism rotatably arranged on the fixing mechanism, and an upper arm supporting mechanism slidably arranged on the side of the forearm supporting mechanism. Through multi-dimensional adjustment of the lifting mechanism, the forearm supporting mechanism and the upper arm supporting mechanism, the positions of the forearm and the upper arm are adjusted, so that the subject is in a comfortable position during the examination and is not easy to move, thereby improving the success rate of the magnetic resonance examination and saving the examination time.

[0016] 2. The auxiliary positioning support device of the utility model adjusts the height through the lifting mechanism, rotates the forearm support plate to make the protrusion slide left and right in the arc-shaped groove, drives the upper arm support plate to swing up and down to adjust the vertical position of the upper arm, and the upper arm support plate slides back and forth along the length direction of the forearm support plate to adjust the horizontal position of the upper arm, so that the wrist is positioned in the magnetic resonance examination equipment, achieving the effect of precise positioning, locking the position of the forearm and upper arm, and helping to place the limb on the examined side in the center of the magnetic resonance examination coil.

[0017] 3. The auxiliary positioning support device of the utility model can not only check the wrist, but also the forearm, foot, ankle joint, calf and other limbs. It only needs to adjust the position of the supporting plate and the lifting mechanism accordingly, and it has strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the auxiliary positioning support device for wrist magnetic resonance examination of the utility model.

[0019] Figure 2 It is a three-dimensional exploded view of the auxiliary positioning support device of the utility model.

[0020] Figure 3 yes Figure 2 Top view of the .

[0021] Figure 4 It is a partial cross-sectional view of the auxiliary positioning support device of the utility model.

[0022] Figure 5 It is a three-dimensional structural schematic diagram of the lifting mechanism of the utility model.

[0023] Figure 6 It is a three-dimensional structural schematic diagram of the lifting mechanism of the utility model from another angle.

[0024] Figure 7 It is a three-dimensional structural schematic diagram of the forearm supporting mechanism of the utility model.

[0025] Wherein, A is an auxiliary positioning support device, 1a is a forearm supporting mechanism, 1 is a forearm supporting plate, 101 is a protrusion, 102 is a slide groove, 103 is a handle, 104 is a strip groove, 105 is a strip rod, 106 is a first supporting plate, 107 is a second supporting plate, 2a is an upper arm supporting mechanism, 2 is an upper arm supporting plate, 201 is a connecting member, 202 is a rotating shaft, 3a is a fixing mechanism, 3 is a fixing seat, 301 is an arc plate, 3 02 is an arc-shaped groove, 4 is a lifting mechanism, 401 is a top plate, 401a is a first side plate, 401b is a first notch, 402 is a scissor lifter, 402a is a scissor arm, 402b is a first end, 402c is a second end, 402d is a third end, 402e is a fourth end, 402f is a hinge, 403 is a hydraulic rod, 404 is a bottom plate, 404a is a second side plate, 404b is a second notch, and 5 is a strap. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] like Figure 1-7 As shown, an auxiliary positioning support device A for magnetic resonance examination of the wrist is matched with the magnetic resonance examination equipment. The auxiliary positioning support device A includes a lifting mechanism 4, a fixing mechanism 3a arranged on the top of the lifting mechanism 4, a forearm supporting mechanism 1a rotatably arranged on the fixing mechanism 3a, and an upper arm supporting mechanism 2a slidably arranged on the side of the forearm supporting mechanism 1a; the fixing mechanism 3a includes a fixing seat 3 and an arc-shaped plate 301 arranged on the top of the fixing seat 3, the bottom of the fixing seat 3 is fixedly connected to the lifting mechanism 4, the arc-shaped plate 301 has a concave part, and an arc-shaped groove 302 is formed in the width direction of the concave part; the forearm supporting mechanism 1a includes a forearm supporting plate 1, the bottom of the forearm supporting plate 1 is aligned with the concave part of the arc-shaped plate 301 In cooperation, a protrusion 101 with a width corresponding to the width of the arc-shaped groove 302 is formed at the bottom of the forearm support plate 1, wherein the protrusion 101 can be slidably located in the arc-shaped groove 302; the upper arm support mechanism 2a includes an upper arm support plate 2, one end of the upper arm support plate 2 is slidably connected to the side of the forearm support plate 1 through a connecting piece 201, and the other end of the upper arm support plate 2 is tilted upward at an angle θ and extends to the outside; when performing an inspection, the height is adjusted by the lifting mechanism 4, and the forearm support plate 1 is axially rotated to make the protrusion 101 slide left and right in the arc-shaped groove 302, driving the upper arm support plate 2 to swing up and down to adjust the vertical position of the upper arm, and the upper arm support plate 2 slides back and forth along the length direction of the forearm support plate 1 to adjust the horizontal position of the upper arm, so that the wrist is positioned in the magnetic resonance examination equipment.

[0028] Wherein, X is the length direction of the forearm support plate 1, Y is the width direction of the forearm support plate 1, the upper arm support plate 2 slides forward and backward along the X direction, and the forearm support plate 1 rotates left and right along the Y direction. The forearm support plate 1 is an arc-shaped support plate, which cooperates with the entrance end of the magnetic resonance examination equipment to place the limb on the side of the test subject in the center of the magnet of the magnetic resonance examination equipment. The angle θ at which the other end of the upper arm support plate 2 tilts upward is 0-60°, and the preferred angle is 30°. The position of the forearm and the upper arm can be adjusted by multi-dimensional adjustment of the lifting mechanism 4, the forearm support plate 1 and the upper arm support plate 2, which is convenient and quick. The lifting mechanism 4 can be configured according to actual needs, such as a scissor-type lifting structure, a gear rack lifting mechanism, a hydraulic lifting mechanism, a vertical screw lifting mechanism, etc. All component materials are made of materials compatible with magnetic resonance examination equipment, and the materials are light, strong, durable and not easy to deform, such as carbon fiber materials.

[0029] like Figure 4 As shown, the rotatable angle β of the forearm support plate 1 relative to the arc plate 301 is 0-40°, which is the included angle between the protrusion 101 and the arc groove 302 in the vertical direction. As shown in the figure, in a normal state, the rotatable angle β of the forearm support plate 1 is 0°, and the body position when lying on the side will be different according to the height and body shape of the subject. Therefore, it is necessary to rotate the forearm support plate 1 to raise or lower the upper arm support plate 2 to a certain position to match the body position of the subject, so that the subject will be more comfortable during a long examination and will not move around, thereby improving the success rate of the examination and the imaging quality.

[0030] like Figure 3 As shown, the connecting member 201 is provided with a rotating shaft 202 in the middle of one side away from the upper arm supporting plate 2, and the upper and lower ends of the rotating shaft 202 are clamped in the inside of the slide groove 102, and the upper arm supporting plate 2 is driven to swing left and right in the length direction of the forearm supporting plate 1 through the rotating shaft 202. The rotating shaft 202 can also slide in the slide groove 102 to drive the upper arm supporting plate 2 to move forward and backward relative to the forearm supporting plate 1, that is, the upper arm supporting plate 2 can slide forward and backward and swing left and right through the rotating shaft 202. According to the body position of the subject, the upper arm supporting plate 2 is adjusted to the most suitable position.

[0031] like Figure 3 As shown, the swing angle α of the upper arm support plate 2 relative to the forearm support plate 1 is 0-20°. As shown in the figure, in a normal state, the swing angle α of the upper arm support plate 2 is 0°, and the upper arm support plate 2 can be swung left and right according to the actual needs of the subject to adjust the swing angle.

[0032] like Figure 5 and Figure 6As shown, the lifting mechanism 4 includes a top plate 401, a scissor-type lifter 402, a hydraulic rod 403 and a bottom plate 404, the top plate 401 is connected to the fixed seat 3, first side plates 401a are provided on both sides of the bottom of the top plate 401, and second side plates 404a are provided on both sides of the top of the bottom plate 404, the scissor-type lifter 402 includes at least two scissor arms 402a, the two scissor arms 402a are relatively arranged between the top plate 401 and the bottom plate 404, the scissor arms 402a are connected by a hinge 402f, the upper part of the scissor arm 402a has a first end 402b and a second end 402c, the first side plate 401a is provided with a first slot 401b, the first end 402b is slidably sleeved in the first slot 401b, and the second end 402c is rotatably connected to the first side plate On 401a, the lower part of the scissor arm 402a has a third end 402d and a fourth end 402e, and the second side plate 404a is provided with a second slot 404b, the third end 402d is slidably mounted in the second slot 404b, and the fourth end 402e is rotatably connected to the second side plate 404a, one end of the hydraulic rod 403 is rotatably connected to the first ends 402b of the two oppositely arranged scissor arms 402a, and the other end of the hydraulic rod 403 is rotatably connected to the fourth ends 402e of the two oppositely arranged scissor arms 402a, and the hydraulic rod 403 is located between the two oppositely arranged scissor arms 402a, and the scissor arms 402a are driven up and down by the hydraulic rod 403, thereby driving the top to perform a lifting movement to adjust the height of the forearm support plate 1. There are four scissor arms 402a, which are arranged in pairs, and the two scissor arms 402a are connected by hinges 402f, and each two scissor arms 402a are arranged up and down and are movably connected to the first side plate 401a and the second side plate 404a respectively. The bottom of the bottom plate 404 also has an anti-slip coating, which can well fix the auxiliary positioning support device A on the magnetic resonance examination bed to prevent the device from shifting.

[0033] like Figure 1-4 As shown, a handle 103 for rotating the forearm support plate 1 is provided at one end of the forearm support plate 1. When the forearm support plate 1 needs to be rotated, the medical staff only needs to operate the handle 103 to rotate the forearm support plate 1, which is simple and convenient.

[0034] like Figure 1-4As shown, the forearm support plate 1 is provided with a plurality of straps 5 for positioning the forearm, and the upper arm support plate 2 is provided with at least one strap 5 for positioning the upper arm. Among them, one end of the strap 5 is fixed to one side of the forearm support plate 1 / upper arm support plate 2, and the other end of the strap 5 is provided with a Velcro, and the strap 5 is tightly attached to the other side of the forearm support plate 1 / upper arm support plate 2 through the Velcro. After the subject places the upper arm and forearm to the predetermined position, the strap 5 is tightened to position it to prevent movement during the examination. In an embodiment not shown, the strap 5 is an inflatable strap, and an inflatable airbag is detachably connected to the strap 5. The inflatable airbag is connected to a manual air pump through a pipeline. After the strap 5 is tied to the upper arm and forearm of the subject, the manual air pump is operated to expand the inflatable airbag and press the upper arm and forearm to enhance the positioning effect of the limb.

[0035] like Figure 7 As shown, the forearm support plate 1 includes a first support plate 106 and a second support plate 107, one end of the first support plate 106 is provided with a strip groove 104, one end of the second support plate 107 is provided with a strip rod 105, and the strip rod 105 is movably inserted in the strip groove 104. Among them, the protrusion 101 is located at the bottom of the first support plate 106 or the second support plate 107, and the overall length of the upper arm support plate 2 can be adjusted through the relative movement of the first support plate 106 and the second support plate 107, and the adaptability is stronger.

[0036] In an embodiment not shown, the upper arm supporting mechanism 2a further comprises an extension plate, which is slidably arranged at the bottom of the upper arm supporting plate 2, and a slide groove 102 is arranged on the extension plate, and a slide rail is slidably mounted in the slide groove 102 at the bottom of the upper arm supporting plate 2. In this way, the overall length of the upper arm supporting plate 2 can be increased by the extension plate according to actual needs, and the adaptability is stronger.

[0037] In an embodiment not shown, two opposite inner sides of the arc-shaped groove 302 are provided with limiting grooves, and two sides of the protrusion 101 are provided with limiting pulleys, which are slidably mounted in the limiting grooves. In this way, the protrusion 101 can be clamped in the arc-shaped groove 302, preventing the protrusion 101 from being separated from the arc-shaped groove 302 during use, causing the forearm support plate 1 to fall off, affecting the inspection.

[0038] In an embodiment not shown, the upper surfaces of the forearm support plate 1 and the upper arm support plate 2 are both provided with sponge pads. Wherein, the sponge pads are memory sponge pads, which make the limbs more comfortable and the limbs will not be paralyzed during long-term examinations.

[0039] In an embodiment not shown, there are two upper arm support plates 2, and the two upper arm support plates 2 are slidably arranged on both sides of the forearm support plate 1. The upper arm support plate 2 is detachable and can be slidably arranged on one side or both sides of the forearm support plate 1 to meet the inspection requirements of the left and right wrists.

[0040] In an embodiment not shown, a rotating component is provided between the fixed seat 3 and the top plate 401, and the fixed seat 3 is rotated by a certain angle relative to the top plate 401 through the rotating component. The rotation angle is 0-30°, which is the angle between the length direction of the fixed seat 3 and the length direction of the top plate 401, thereby driving the forearm support plate 1 to swing left and right in the horizontal direction to better fine-tune the position of the forearm and upper arm.

[0041] Among them, the sliding position of the upper arm supporting plate 2, the left and right swinging position of the upper arm supporting plate 2, the rotation position of the forearm supporting plate 1 and the rotation position of the fixing seat 3 are all fixed by locking components, so that the adjusted positions can be fixed and not loose.

[0042] The working method of the utility model is as follows:

[0043] After the examinee lies on his side, the examinee's forearm is placed on the forearm support plate 1, and the height of the forearm support plate 1 is adjusted by the lifting mechanism 4 so that the forearm support plate 1 matches the entrance end of the magnetic resonance examination equipment;

[0044] According to the position of the upper arm, move the upper arm supporting plate 2 and place the upper arm on the upper arm supporting plate 2;

[0045] The forearm and upper arm are tied and positioned by means of a strap 5 so that the wrist is positioned at the center of the magnetic resonance examination coil.

[0046] When the vertical angle of the upper arm supporting plate 2 needs to be adjusted, the forearm supporting plate 1 is rotated by the handle 103 to make the upper arm supporting plate 2 swing up and down in the vertical direction, thereby adjusting the vertical position of the upper arm.

[0047] In general, the utility model is an auxiliary positioning support device for wrist magnetic resonance examination, including a lifting mechanism 4, a fixing mechanism 3a arranged on the top of the lifting mechanism 4, a forearm supporting mechanism 1a rotatably arranged on the fixing mechanism 3a, and an upper arm supporting mechanism 2a slidably arranged on the side of the forearm supporting mechanism 1a. Through the multi-dimensional adjustment of the lifting mechanism 4, the forearm supporting mechanism 1a and the upper arm supporting mechanism 2a, the positions of the forearm and the upper arm are adjusted, so that the subject can be in a comfortable position during the examination and is not easy to move, thereby improving the success rate of the magnetic resonance examination and saving the examination time. The auxiliary positioning support device of the utility model adjusts the height through the lifting mechanism 4, rotates the forearm support plate 1 to make the protrusion 101 slide left and right in the arc groove 302, drives the upper arm support plate 2 to swing up and down to adjust the vertical position of the upper arm, and the upper arm support plate 2 slides forward and backward along the length direction of the forearm support plate 1 to adjust the horizontal position of the upper arm, so that the wrist is positioned in the magnetic resonance examination equipment, achieving the effect of precise positioning, locking the position of the forearm and upper arm, and helping to place the limb on the side of the examination in the center of the magnetic resonance examination coil. The auxiliary positioning support device of the utility model can not only examine the wrist, but also the forearm, foot, ankle joint, calf and other limbs, and only needs to adjust the position of the support plate and the lifting mechanism 4 accordingly, and has strong applicability.

[0048] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. An auxiliary positioning support device for magnetic resonance examination of the wrist, characterized in that: The auxiliary positioning support device cooperates with the magnetic resonance examination equipment, and the auxiliary positioning support device includes a lifting mechanism, a fixing mechanism arranged on the top of the lifting mechanism, a forearm supporting mechanism rotatably arranged on the fixing mechanism, and an upper arm supporting mechanism slidably arranged on the side of the forearm supporting mechanism; The fixing mechanism includes a fixing seat and an arc-shaped plate arranged on the top of the fixing seat, the bottom of the fixing seat is fixedly connected to the lifting mechanism, the arc-shaped plate has a concave portion, and an arc-shaped groove is formed in the width direction of the concave portion; The forearm supporting mechanism comprises a forearm supporting plate, the forearm supporting plate is used to place the forearm, the bottom of the forearm supporting plate matches with the concave part of the arc plate, the bottom of the forearm supporting plate forms a protrusion with a width corresponding to the width of the arc groove, wherein the protrusion is slidably located in the arc groove; the forearm supporting plate matches with the entrance end of the magnetic resonance examination device; The upper arm supporting mechanism comprises an upper arm supporting plate, the upper arm supporting plate is used to place the upper arm, one end of the upper arm supporting plate is slidably connected to the side of the forearm supporting plate through a connecting piece, and the other end of the upper arm supporting plate is tilted upward at an angle of θ and extends to the outside; When conducting an examination, the height is adjusted through the lifting mechanism, and the forearm support plate is rotated axially to make the protrusion slide left and right in the arc-shaped groove, driving the upper arm support plate to swing up and down to adjust the vertical position of the upper arm, and the upper arm support plate slides forward and backward along the length direction of the forearm support plate to adjust the horizontal position of the upper arm, so that the wrist is positioned in the magnetic resonance examination equipment.

2. The auxiliary positioning support device for wrist magnetic resonance examination according to claim 1, characterized in that: A rotating shaft is provided on the middle part of the connecting piece on the side away from the upper arm supporting plate, and the upper and lower ends of the rotating shaft are clamped in the slide groove, and the upper arm supporting plate is driven to swing left and right in the length direction of the forearm supporting plate through the rotating shaft; the swing angle of the upper arm supporting plate relative to the forearm supporting plate is 0-20°; the rotatable angle of the forearm supporting plate relative to the arc plate is 0-40°; the other end of the upper arm supporting plate is tilted upward at an angle of θ of 0-60°.

3. The auxiliary positioning support device for wrist magnetic resonance examination according to claim 1, characterized in that: The lifting mechanism includes a top plate, a scissor-type lifter, a hydraulic rod and a bottom plate. The top plate is connected to a fixed seat. First side plates are provided on both sides of the bottom of the top plate, and second side plates are provided on both sides of the top of the bottom plate. The scissor-type lifter includes at least two scissor arms. The two scissor arms are relatively arranged between the top plate and the bottom plate. The scissor arms are connected by a hinge. The upper part of the scissor arm has a first end and a second end. A first slot is provided on the first side plate. The first end slides in the first slot and the second end is rotatably connected to the first side plate. The lower part of the scissor arm has a third end and a fourth end. A second slot is provided on the second side plate. The third end slides in the second slot and the fourth end is rotatably connected to the second side plate. One end of the hydraulic rod is rotatably connected to the first ends of the two relatively arranged scissor arms, and the other end of the hydraulic rod is rotatably connected to the fourth ends of the two relatively arranged scissor arms.

4. The auxiliary positioning support device for wrist magnetic resonance examination according to claim 3, characterized in that: There are four scissor arms, which are arranged in pairs, and two scissor arms are connected by hinges.

5. The auxiliary positioning support device for wrist magnetic resonance examination according to claim 1, characterized in that: Limiting grooves are arranged on two opposite inner sides of the arc-shaped groove, and limiting pulleys are correspondingly arranged on two sides of the protrusion, and the limiting pulleys are slidably sleeved in the limiting grooves.

6. The auxiliary positioning support device for wrist magnetic resonance examination according to claim 1, characterized in that: The forearm supporting plate includes a first supporting plate and a second supporting plate, one end of the first supporting plate is provided with a strip groove, one end of the second supporting plate is provided with a strip rod, and the strip rod is movably inserted in the strip groove; the upper arm supporting mechanism also includes an extension plate, the extension plate is slidably arranged at the bottom of the upper arm supporting plate, the extension plate is provided with a slide groove, the bottom of the upper arm supporting plate is provided with a slide rail, and the slide rail is slidably mounted in the slide groove.

7. The auxiliary positioning support device for wrist magnetic resonance examination according to claim 3, characterized in that: A rotating component is also provided between the fixing seat and the top plate, and the fixing seat is rotated relative to the top plate by the rotating component, and the rotating angle is 0-30 degrees.

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