Wrist motion assessment mold for imaging examinations

Abstract

The utility model provides a wrist joint motion evaluation mold for imaging examination, comprising a base, an arm fixing device, a palm fixing device, a first rotating component, a second rotating component, and an angle measuring device. The palm fixing device can be rotated by the second rotating component to a position where the support surface of the palm fixing device is parallel or perpendicular to the support surface of the base. When the palm is placed on the support surface of the palm fixing device and the forearm of the human body is fixed by the arm fixing device, the palm deflects left and right in the horizontal direction under the restriction of the palm fixing device, and the angle value of the ulnar / radial deviation or flexion / extension of the wrist is observed by the angle measuring device. The palm can also be turned over by the second rotating component, and the angle value of the pronation / supination of the wrist is observed by the angle measuring device. In this way, the wrist joint motion evaluation mold for imaging examination provided by the utility model can evaluate the flexion / extension, ulnar / radial deviation, and pronation / posterior movement of the wrist joint.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a wrist joint motion evaluation mold used for imaging examination. Background Art

[0002] The anatomical structure of the wrist joint is delicate and complex, and the various structures coordinate with each other to ensure its smooth movement. It is very important to understand the dynamic characteristics of each structure of the wrist joint and the biomechanical changes after injury.

[0003] At present, understanding the dynamic characteristics of various structures of the wrist joint and the biomechanical changes after injury mainly relies on magnetic resonance imaging. The molds used in the examination are mostly used for one or two groups of wrist flexion / extension, ulnar / radial deviation, and pronation / pronation movements, and cannot evaluate the complete range of autonomous movement of the wrist joint. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a wrist joint motion evaluation mold for imaging examination, aiming to solve the problem that the wrist joint motion evaluation mold for imaging examination in the related art can only be used to evaluate one or two groups of wrist joint flexion and extension, ulnar / radial deviation, and pronation / posterior movement, and cannot evaluate the complete range of autonomous movement of the wrist joint.

[0005] The utility model provides a wrist joint motion assessment mold for imaging examination, comprising:

[0006] Base;

[0007] An arm fixing device, the arm fixing device is arranged on the base and is used to fix the forearm of a human body;

[0008] A palm fixing device, the palm fixing device is located at the front side of the arm fixing device, and the palm fixing device is rotatably connected to the base through a first rotating assembly, the rotation axis is located at a position where the palm fixing device contacts the base of the palm, and the rotation axis is perpendicular to the support surface of the base, the palm fixing device is rotatably connected to the first rotating assembly through a second rotating assembly, and the rotation axis is radially along the rotation trajectory of the first rotating assembly;

[0009] An angle measuring device is provided between the first rotating assembly and the base and between the second rotating assembly and the first rotating assembly.

[0010] According to the wrist joint motion evaluation mold for imaging examination provided by the utility model, the first rotating component includes:

[0011] A slide groove, the slide groove is arranged on the base and is located at the front side of the arm fixing device, the track of the slide groove is an arc shape, the slide groove protrudes in the direction away from the arm fixing device, and the center of the slide groove is located on the rotation axis between the palm fixing device and the base;

[0012] A connecting block is connected to the palm fixing device through the second rotating assembly, and the bottom of the connecting block is slidably connected to the sliding groove.

[0013] According to the wrist joint motion assessment mold for imaging examination provided by the utility model, the portion where the connecting block is connected to the slide slot is an arc-shaped block, and at least one side of the arc-shaped block is in contact with the inner side wall of the slide slot.

[0014] According to the wrist joint motion evaluation mold for imaging examination provided by the utility model, the second rotating component includes:

[0015] An axial hole, wherein the axial hole is arranged on the connecting block, and the axis of the axial hole is along the radial direction of the sliding groove;

[0016] A rotating shaft, one end of which is connected to the front end of the palm fixing device, and the other end of which is rotatably connected to the shaft hole.

[0017] According to the wrist joint motion evaluation mold for imaging examination provided by the utility model, a avoidance hole is arranged on the base, the avoidance hole runs through the base, and the size of the avoidance hole is larger than the size of the area swept by the palm fixing device when rotating.

[0018] According to the wrist joint motion evaluation mold for imaging examination provided by the utility model, a height adjustment mechanism is arranged between the arm fixing device and the base.

[0019] According to the wrist joint motion assessment mold for imaging examination provided by the utility model, a locking mechanism is arranged between the connecting block and the base. When the locking mechanism is in the locking position, the positions of the connecting block and the slide groove are fixed. When the locking mechanism is in the unlocking position, the connecting block is used to slide along the slide groove.

[0020] According to the wrist joint motion evaluation mold for imaging examination provided by the utility model, the locking mechanism includes:

[0021] A bolt hole, wherein the bolt hole communicates with the inner and outer sides of the slide groove, the axis of the bolt hole extends along the front-rear direction of the base, and the axis of the bolt hole passes through the rotation axis between the palm fixing device and the base;

[0022] A locking bolt is threadedly connected to the bolt hole, and the threaded end of the locking bolt is used to tighten or release the connection block.

[0023] According to the wrist joint motion evaluation mold for imaging examination provided by the utility model, the angle measuring device includes:

[0024] a first angle measuring device, the first angle measuring device comprising a first pointer and a first scale, the first pointer being arranged on the connecting block and extending in a radial direction of the slide slot, the first scale being arranged on the base and distributed along an extending direction of the slide slot;

[0025] The second angle measuring device comprises a second pointer and a second scale, wherein the second pointer is arranged on the rotating shaft, the second pointer extends radially along the rotating shaft, and the second scale is arranged on the connecting block and distributed around the rotating axis of the rotating shaft.

[0026] According to the wrist joint motion assessment mold for imaging examination provided by the utility model, the arm fixing device includes:

[0027] A support seat connected to the base;

[0028] At least two straps are provided on a side of the support base away from the base, and a plurality of the straps are distributed along the front-to-back direction of the base.

[0029] The utility model adopts the above technical solution, which has the following advantages:

[0030] The utility model provides a wrist joint motion assessment mold for imaging examination, comprising a base, an arm fixing device, a palm fixing device and an angle measuring device. The arm fixing device is arranged on the base and is used to fix the forearm of a human body. The palm fixing device is arranged on the front side of the arm fixing device, and the palm fixing device is rotatably connected to the base through a first rotating component, the rotation axis is located at the position where the palm fixing device contacts the base of the palm, and the rotation axis is perpendicular to the support surface of the base. The palm fixing device is also rotatably connected to the first rotating component through a second rotating component, and the rotation axis is along the front-back direction of the base and passes through the rotation axis of the first rotating component. The angle measuring device is arranged between the first rotating component and the base and between the second rotating component and the first rotating component. When in use, the palm fixing device can be rotated to a position where the support surface of the palm fixing device is parallel to the support surface of the base through the second rotating component, at which time the palm is placed on the support surface of the palm fixing device, and the forearm of the human body is fixed through the arm fixing device. Since the palm fixing device is rotatably connected to the base through the first rotating component, the palm can be deflected left and right in the horizontal direction, and the angle value of the ulnar / radial deviation of the wrist is observed through the angle measuring device. The palm fixing device can also be rotated to a position where the support surface of the palm fixing device is perpendicular to the support surface of the base through the second rotating component. At this time, the palm is placed on the support surface of the palm fixing device, and the forearm of the human body is fixed by the arm fixing device. Since the palm fixing device is rotatably connected to the base through the first rotating component, the palm can be deflected in the horizontal direction, and the flexion / extension angle value of the wrist can be observed through the angle measuring device. In addition, the palm can also be fixed on the support surface of the palm fixing device, and the forearm of the human body can be fixed by the arm fixing device. The palm can be turned over by the second rotating component, and the angle value of the pronation / supination of the wrist can be observed by the angle measuring device. In this way, the wrist joint movement evaluation mold for imaging examination provided by the utility model can be used for ulnar / radial deviation, flexion / extension, and pronation / supination of the wrist joint at the same time, which solves the problem that the mold in the related art cannot evaluate the complete range of motion of the autonomous activity of the wrist joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is a structural schematic diagram of a wrist joint motion assessment mold for imaging examination provided by an embodiment of the utility model;

[0033] Figure 2 It is a structural schematic diagram of a base provided by an embodiment of the utility model;

[0034] Figure 3 It is a structural schematic diagram of a connection block provided in one embodiment of the utility model.

[0035] Reference numerals:

[0036] 100: base; 110: avoidance hole; 210: support seat; 220: strap; 300: palm fixing device; 410: slide groove; 420: connecting block; 421: connecting part; 422: sliding part; 510: shaft hole; 520: rotating shaft; 610: bolt hole; 620: locking bolt; 710: first pointer; 720: first scale; 810: second pointer; 820: second scale. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0043] The utility model provides a wrist joint motion evaluation mold for imaging examination, wherein an arm fixing device can fix the forearm of a human body on a supporting surface of a base to limit the translational movement of the forearm, and the palm can be fixed by a palm fixing device. The palm fixing device can be rotated to a position where the supporting surface of the palm fixing device is parallel to the supporting surface of the base by a second rotating component, and the wrist is rotated in a horizontal direction at this time to measure the ulnar / radial deviation angle of the wrist. The palm fixing device can be rotated to a position where the supporting surface of the palm fixing device is perpendicular to the supporting surface of the base by a second rotating component, and the wrist is rotated in a horizontal direction at this time to measure the flexion / extension angle of the wrist. The palm can also be turned over by the second rotating component to measure the pronation / supination angle of the wrist. The wrist joint motion evaluation mold for imaging examination provided by the utility model can evaluate the complete range of autonomous movement of the wrist joint.

[0044] Combine the following Figures 1 to 3 The utility model describes a wrist joint motion assessment mold for imaging examination.

[0045] The embodiment of the utility model provides a wrist joint motion assessment mold for imaging examination, comprising a base 100, an arm fixing device, a palm fixing device 300 and an angle measuring device.

[0046] The base 100 can be a plate-like structure, and the arm fixing device is arranged on the top surface of the base 100, that is, the supporting surface of the base 100. When the forearm of the human body is placed on the supporting surface of the base 100, the arm fixing device is used to fix the forearm of the human body on the base 100, specifically to limit the translational movement of the forearm.

[0047] The palm fixing device 300 is located at the front side of the arm fixing device, and a first rotating component and a second rotating component are arranged between the palm fixing device 300 and the base 100 .

[0048] The first rotating assembly is used to be rotatably connected to the base 100, and the rotation axis is in the vertical direction, that is, perpendicular to the support surface of the base 100. In actual use, the rotation axis is located at the base of the palm, in other words, the rotation axis is colinear with the rotation axis of the wrist.

[0049] The second rotating assembly is connected between the first rotating assembly and the palm fixing device 300 , and the rotating axis of the second rotating assembly is along the radial direction of the rotating track of the first rotating assembly.

[0050] In this way, the palm fixing device 300 is connected to the base 100 through the second rotating assembly and the first rotating assembly.

[0051] The angle measuring device is disposed between the first rotating assembly and the base 100 , and between the second rotating assembly and the first rotating assembly.

[0052] It should be noted that the forward here refers to the direction of the forearm toward the palm, and the backward refers to the direction of the forearm toward the elbow.

[0053] The wrist joint motion evaluation mold for image inspection provided by the utility model has three working modes.

[0054] The first method is that the palm fixing device 300 is rotated by the second rotating assembly to a position where the support surface of the palm fixing device 300 is parallel to the support surface of the base 100. At this time, the subject places the palm on the support surface of the palm fixing device 300, and the forearm is fixed to the base 100 by the arm fixing device. When the subject deflects the palm in the horizontal direction, the palm fixing device 300 can be driven to rotate under the restriction of the first rotating assembly, and the ulnar / radial deviation angle of the wrist can be observed by the angle measuring device.

[0055] The second method is that the palm fixing device 300 is rotated by the second rotating assembly to a position where the support surface of the palm fixing device 300 is perpendicular to the support surface of the base 100. At this time, the subject places the palm on the support surface of the palm fixing device 300, and the forearm is fixed to the base 100 by the arm fixing device. When the subject deflects the palm in the horizontal direction, the palm fixing device 300 can be driven to rotate under the restriction of the first rotating assembly, and the flexion / extension angle of the wrist can be observed by the angle measuring device.

[0056] The third method is to rotate the palm fixing device 300 to the front side of the arm fixing device through the first rotating assembly. At this time, the subject places the palm on the support surface of the palm fixing device 300, and the forearm is fixed on the base 100 by the arm fixing device. When the subject turns over the palm, the palm fixing device 300 can be driven to rotate under the restriction of the second rotating assembly, and the pronation / supination angle of the wrist can be observed through the angle measuring device.

[0057] It can be seen that the wrist joint motion assessment mold for imaging examination provided by the embodiment of the utility model can simultaneously measure the ulnar / radial deviation angle, flexion / extension angle and pronation / supination angle of the wrist, and realize the assessment of the complete range of motion of the wrist joint.

[0058] In some embodiments of the present invention, the first rotating assembly may include a sliding groove 410 and a connecting block 420 .

[0059] The slide groove 410 is disposed on the base 100 and is located at the front side of the arm fixing device. The extension track of the slide groove 410 is arc-shaped and protrudes away from the arm fixing device. Since the flexion angle of the wrist can reach nearly 90 degrees, the center angle of the slide groove 410 can be 180 degrees.

[0060] The connecting block 420 includes two parts, namely a connecting portion 421 and a sliding portion 422 . The connecting portion 421 is used to connect with the second rotating assembly, and the sliding portion 422 is used to be slidably connected with the sliding groove 410 .

[0061] The rotation axis of the first rotating component is the axis of the sliding track of the connecting block 420. Since the connecting block 420 slides along the slide groove 410, the position where the center of the slide groove 410 is located is the position where the rotation axis of the first rotating component passes.

[0062] Thus, when the palm is placed on the palm fixing device 300 , the base of the palm is exactly located at the rotation axis of the first rotating component, that is, the rotation axis of the wrist is colinear with the rotation axis of the first rotating component, so that the palm can rotate coaxially with the palm fixing device 300 .

[0063] After the forearm of the human body is fixed on the base 100 by the arm fixing device, the position of the human body's wrist will also be fixed, and further, the rotation axis of the wrist will also be in a fixed position and not move. Since the rotation axis of the wrist is colinear with the rotation axis of the palm fixing device 300, in some embodiments of the utility model, the sliding portion 422 of the connecting block 420 is an arc block, and the side surfaces of the arc block perpendicular to the radial direction of the slide groove 410 are in contact with the inner side wall of the slide groove 410. In this way, when the connecting block 420 slides along the slide groove 410, it can be ensured that the palm fixing device 300 is always in a fixed position and not move relative to the rotation axis of the base 100.

[0064] In some embodiments of the present invention, the second rotating assembly may include an axial hole 510 and a rotating shaft 520. The axial hole 510 is disposed on the connecting portion 421 of the connecting block 420, and the axis of the axial hole 510 is along the radial direction of the slide slot 410. One end of the rotating shaft 520 is connected to the front end of the palm fixing device 300, and the other end is rotatably connected to the axial hole 510.

[0065] Since the rotation axes of the ulnar / radial deviation, flexion / extension, and pronation / supination of the wrist are perpendicular to and intersect with each other, and the palm fixing device 300 needs to rotate synchronously with the palm, it is necessary to ensure that the rotation axis of the first rotating component intersects with the rotation axis of the second rotating component and is perpendicular to each other.

[0066] In this way, the axis of the shaft hole 510 extends along the radial direction of the slide slot 410, which can ensure that the rotation axis of the second rotating component is perpendicular to the rotation axis of the first rotating component and intersects with the rotation axis of the first rotating component.

[0067] The palm fixing device 300 may be a plate-shaped structure. When the support surface of the palm fixing device 300 and the support surface of the base 100 are perpendicular to each other, interference between the palm fixing device 300 and the base 100 may occur.

[0068] Therefore, in some embodiments of the present invention, an avoidance hole 110 is provided at a position corresponding to the base 100 and the palm fixing device 300 .

[0069] Specifically, since the area swept by the palm fixing device 300 when rotating with the first rotating component is a fan-shaped area, the avoidance hole 110 can also be a fan-shaped hole. The size of the avoidance hole 110 needs to be larger than the area that the palm fixing device 300 can sweep to prevent the palm fixing device 300 from interfering with the base 100.

[0070] When the palm is placed on the palm fixing device 300 and the forearm is fixed by the arm fixing device, the palm and forearm are in a straight state, which is the best evaluation posture. However, due to the different palm widths and arm thicknesses of different test subjects, when the test subject places the palm and arm on the mold, the palm and forearm will not reach the best evaluation posture.

[0071] Therefore, in some embodiments of the present invention, a height adjustment mechanism is provided between the arm fixing device and the base 100. Adaptive adjustment can be performed according to the arm thickness and palm width of the subject, so that the palm and forearm can achieve the best assessment posture.

[0072] Specifically, the arm fixing device may include a support base 210 and at least two straps 220, wherein the support base 210 is disposed on the top of the base 100, and a plurality of straps 220 are disposed on a side of the support base 210 away from the base 100, and the plurality of straps 220 are distributed along the front-to-back direction of the base 100. When the forearm is placed on the support base 210, the straps 220 may be used to tie or release the forearm.

[0073] The height adjustment mechanism may include an airbag, which is disposed between the support seat 210 and the base 100 , and the height of the support seat 210 may be adjusted by inflating and deflating the airbag.

[0074] When evaluating the pronation / supination action, it is necessary to ensure that the first rotating component stops rotating. Therefore, in some embodiments of the present invention, a locking mechanism can be set between the connecting block 420 and the base 100. When the locking mechanism is in the locking position, the position of the connecting block 420 and the slide groove 410 is fixed. When the locking mechanism is in the unlocking position, the connecting block 420 is used to slide along the slide groove 410.

[0075] Specifically, the locking mechanism may include a bolt hole 610 and a locking bolt 620. The bolt hole 610 may extend backward from the front end of the base 100 to the inside of the slide slot 410, and the locking bolt 620 is inserted into the bolt hole 610. Since the forearm and the palm need to be kept straight when evaluating the pronation / supination action, the bolt hole 610 may extend in the front-to-back direction and pass through the rotation axis of the first rotating assembly.

[0076] When evaluating the pronation / supination action, the palm fixing device 300 is first used to drive the connecting block 420 to rotate to the front of the arm fixing device. When the locking bolt 620 is screwed into the slide groove 410, the locking bolt 620 and the sliding portion 422 of the connecting block 420 are pressed tightly, so that the sliding portion 422 is squeezed between the locking bolt 620 and the inner wall of the slide groove 410, thereby limiting the movement of the connecting block 420. At this time, the locking mechanism is in the locked position.

[0077] When the locking bolt 620 is rotated in the reverse direction, the locking bolt 620 withdraws from the slide slot 410 and releases the connecting block 420. At this time, the connecting block 420 can slide along the slide slot 410, and the locking mechanism is in the unlocking position.

[0078] In some embodiments of the utility model, the angle measuring device includes a first angle measuring device and a second angle measuring device. The first angle measuring device is arranged between the first rotating assembly and the base 100, and is used to measure the flexion / extension angle and the ulnar / radial deviation angle of the wrist. The second angle measuring device is arranged between the second rotating assembly and the first rotating assembly, and is used to measure the pronation / supination angle of the wrist.

[0079] The first angle measuring device includes a first pointer 710 and a first scale 720. The first pointer 710 is disposed on a side of the connecting portion 421 of the connecting block 420 close to the arm fixing device and extends along the radial direction of the slide slot 410. The first scale 720 is disposed on the top surface of the base 100 and on a side of the slide slot 410 close to the arm fixing device. The first scale 720 is distributed along the extension direction of the slide slot 410.

[0080] Specifically, the zero scale line of the first scale 720 extends along the front-to-back direction of the base 100 and passes through the rotation axis of the first rotating assembly. Starting from the zero scale line, scale lines of 90 degrees are arranged in the counterclockwise direction and the clockwise direction. When measuring the flexion / extension angle or the ulnar / radial deviation angle, the connecting block 420 is rotated to the position where the first pointer 710 coincides with the zero scale line. When the palm drives the palm fixing device 300 to rotate in the horizontal direction, the rotation angle at this time can be obtained through the scale line pointed by the pointer.

[0081] The second angle measuring device includes a second pointer 810 and a second scale 820. The second pointer 810 is disposed on the rotation shaft 520 and extends radially along the rotation shaft 520. The second pointer 810 is located on a side of the connecting block 420 close to the arm fixing device. The second scale 820 is disposed on the connecting portion 421 of the connecting block 420 and is located on a side close to the arm fixing device.

[0082] The zero scale line of the second scale 820 can be located at any position, and the scale lines of 180 degrees are arranged in the counterclockwise and clockwise directions with the zero scale line as the starting point. As long as the support surface of the palm fixing device 300 is parallel to the support surface of the base 100, the second pointer 810 points to the zero scale line. When the palm performs pronation / supination movements, the scale pointed to by the second pointer 810 is the rotation angle.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A wrist joint motion assessment mold for imaging examination, characterized in that: include; Base (100); An arm fixing device, the arm fixing device being arranged on the base (100) and being used for fixing the forearm of a human body; A palm fixing device (300), the palm fixing device (300) is located at the front side of the arm fixing device, and the palm fixing device (300) is rotatably connected to the base (100) via a first rotating assembly, the rotation axis is located at a position where the palm fixing device (300) contacts the base of the palm, and the rotation axis is perpendicular to a support surface of the base (100), the palm fixing device (300) is rotatably connected to the first rotating assembly via a second rotating assembly, and the rotation axis is along the radial direction of the rotation trajectory of the first rotating assembly; An angle measuring device is provided between the first rotating assembly and the base (100) and between the second rotating assembly and the first rotating assembly.

2. The wrist joint motion assessment mold for imaging examination according to claim 1, characterized in that: The first rotating assembly comprises: a slide groove (410), wherein the slide groove (410) is arranged on the base (100) and is located at the front side of the arm fixing device, the track of the slide groove (410) is arc-shaped, the slide groove (410) protrudes in a direction away from the arm fixing device, and the center of the slide groove (410) is located on the rotation axis between the palm fixing device (300) and the base (100); A connecting block (420), wherein the connecting block (420) is connected to the palm fixing device (300) via the second rotating assembly, and the bottom of the connecting block (420) is slidably connected to the sliding groove (410).

3. The wrist joint motion assessment mold for imaging examination according to claim 2, characterized in that: The portion of the connecting block (420) that is connected to the slide groove (410) is an arc-shaped block, and at least one side of the arc-shaped block is in contact with the inner wall of the slide groove (410).

4. The wrist joint motion assessment mold for imaging examination according to claim 2, characterized in that: The second rotating assembly comprises: an axial hole (510), wherein the axial hole (510) is arranged on the connecting block (420), and the axis of the axial hole (510) is along the radial direction of the sliding groove (410); A rotating shaft (520), one end of which is connected to the front end of the palm fixing device (300), and the other end of which is rotatably connected to the shaft hole (510).

5. The wrist joint motion assessment mold for imaging examination according to claim 1, characterized in that: The base (100) is provided with an avoidance hole (110), the avoidance hole (110) passes through the base (100), and the size of the avoidance hole (110) is larger than the size of the area swept by the palm fixing device (300) when it rotates.

6. The wrist joint motion assessment mold for imaging examination according to claim 1, characterized in that: A height adjustment mechanism is provided between the arm fixing device and the base (100).

7. The wrist joint motion assessment mold for imaging examination according to claim 2, characterized in that: A locking mechanism is provided between the connecting block (420) and the base (100); when the locking mechanism is in a locking position, the positions of the connecting block (420) and the slide groove (410) are fixed; when the locking mechanism is in an unlocking position, the connecting block (420) is used to slide along the slide groove (410).

8. The wrist joint motion assessment mold for imaging examination according to claim 7, characterized in that: The locking mechanism comprises: A bolt hole (610), wherein the bolt hole (610) is connected to the inner and outer sides of the slide groove (410), the axis of the bolt hole (610) extends along the front-rear direction of the base (100), and the axis of the bolt hole (610) passes through the rotation axis between the palm fixing device (300) and the base (100); A locking bolt (620), wherein the locking bolt (620) is threadedly connected to the bolt hole (610), and the threaded end of the locking bolt (620) is used to tighten or release the connection block (420).

9. The wrist joint motion assessment mold for imaging examination according to claim 4, characterized in that: The angle measuring device comprises: a first angle measuring device, the first angle measuring device comprising a first pointer (710) and a first scale (720), the first pointer (710) being arranged on the connecting block (420), and the first pointer (710) extending along the radial direction of the slide groove (410), and the first scale (720) being arranged on the base (100), and the first scale (720) being distributed along the extension direction of the slide groove (410); A second angle measuring device, the second angle measuring device comprises a second pointer (810) and a second scale (820), the second pointer (810) is arranged on the rotating shaft (520), the second pointer (810) extends along the radial direction of the rotating shaft (520), and the second scale (820) is arranged on the connecting block (420) and distributed around the rotating axis of the rotating shaft (520).

10. The wrist joint motion assessment mold for imaging examination according to claim 1, characterized in that: The arm fixing device comprises: A support base (210), the support base (210) being connected to the base (100); At least two binding straps (220), wherein the binding straps (220) are arranged on a side of the support seat (210) away from the base (100), and a plurality of the binding straps (220) are distributed along the front-to-back direction of the base (100).

Images