Auxiliary device for muscle-bone ultrasonic examination
By combining the design of limiting components, lifting mechanisms, and fastening mechanisms, the problems of poor adaptability and inaccurate angle control of existing devices are solved, achieving stable fixation of the arm and high-quality ultrasound examination results.
Patent Information
- Application Number
- CN202511375436.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-25
- Publication Date
- 2025-11-28
AI Technical Summary
Existing limb fixation devices lack effective length and circumference adjustment mechanisms during ultrasound examinations, resulting in poor fit, difficulty in accurately controlling and maintaining the angle of the forearm, and easy changes in body position and decreased image quality due to patient fatigue.
It adopts a combination design of limiting components, lifting mechanism, driving mechanism and fastening mechanism. The spacing of the fixing ring and the tilting and lifting of the forearm are realized through sliding connection and rotation connection. The wrist and elbow are fixed by airbag ring, and the motor drive realizes the stable fixation and angle control of the arm.
It achieves high applicability to arms of different lengths, stable lifting and angle maintenance of the forearm, reduces postural changes due to fatigue, and improves the image quality and diagnostic accuracy of ultrasound examinations.
Smart Images
Figure CN121015232A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of ultrasonic examination, in particular to an auxiliary device for musculoskeletal ultrasonic examination. BACKGROUND
[0002] The musculoskeletal system is an important part of the human body, which bears important functions such as movement, support and protection of internal organs, in order to prevent the musculoskeletal system from seriously affecting the quality of life and health of people, it is necessary to perform musculoskeletal ultrasonic examination to diagnose the musculoskeletal system.
[0003] When the arm is examined, the patient will shake due to nervousness or fatigue during the examination, so the patient's arm needs to be fixed, and most of the existing limb fixing devices are rigid structures or simple bands, which lack effective length and girth adjustment mechanisms, resulting in poor adaptability, and when the patient's forearm is examined, the patient's forearm often needs to be lifted to a specific angle, the current method is to actively maintain by the patient or manually assist by the doctor, it is difficult to accurately control and maintain the angle, the patient is prone to change the body position due to fatigue, resulting in interruption of the examination or decline in image quality. SUMMARY
[0004] The purpose of the application is to solve the problem that when the arm is examined, the patient will shake due to nervousness or fatigue during the examination, so the patient's arm needs to be fixed, and most of the existing limb fixing devices are rigid structures or simple bands, which lack effective length and girth adjustment mechanisms, resulting in poor adaptability, and when the patient's forearm is examined, the patient's forearm often needs to be lifted to a specific angle, the current method is to actively maintain by the patient or manually assist by the doctor, it is difficult to accurately control and maintain the angle, the patient is prone to change the body position due to fatigue, resulting in interruption of the examination or decline in image quality, and an auxiliary device for musculoskeletal ultrasonic examination is proposed.
[0005] In order to achieve the above purpose, the application adopts the following technical auxiliary device for musculoskeletal ultrasonic examination: a cavity seat and two fixing rings, a guide groove is formed in the top of the cavity seat, a limiting piece is slidably connected inside the guide groove, an installation frame is fixedly connected to the inner bottom wall of the cavity seat, a lifting mechanism is rotatably connected to one side of the installation frame, a driving mechanism is fixedly connected to one side of the cavity seat, two fixing rings are connected through a connecting mechanism, a through groove is formed in the bottom of each fixing ring, a fastening mechanism is rotatably connected inside each fixing ring, and a bracket is fixedly connected to the bottom of each fixing ring. The lifting mechanism comprises a worm rotatably connected to one side of the mounting frame, one end of the worm is rotatably connected to one side of the inner wall of the cavity seat, one side of the surface of the worm is fixedly connected with a first clamping tooth disc, the surface of the worm is engaged with a worm gear, the surface of the worm gear is fixedly connected with a lifting clamp, the two sides of the lifting clamp are rotatably connected with the two sides of the guide groove, the inside of the lifting clamp is slidably connected with a guide frame, the top of the guide frame is fixedly connected to the bottom of one of the brackets.
[0006] As a further description of the above-mentioned technology, the fastening mechanism comprises a center ring rotatably connected inside the fixed ring, the bottom of the center ring is fixedly connected with a limiting block matched with the through groove, the inside of the center ring is fixedly connected with an air bag ring, the top of the air bag ring is fixedly connected with an air pipe, the other end of the air pipe passes through the center ring and the fixed ring in sequence and is connected with a pressing ball, the surface of the air pipe is provided with a valve.
[0007] As a further description of the above-mentioned technology, the limiting piece comprises a triangular plate slidably connected inside the guide groove, the top of the triangular plate is fixedly connected with a plug-in rod, the bottom of the triangular plate is rotatably connected with a center cylinder, the two sides of the inner wall of the center cylinder are fixedly connected with a snap ring, the inside of the center cylinder is provided with a sliding groove, one side of the surface of the triangular plate is provided with a limiting mechanism.
[0008] As a further description of the above-mentioned technology, the driving mechanism comprises a motor installed on one side of the cavity seat, the output end of the motor is connected with a driving rod, the other end of the driving rod passes through the cavity seat and the worm in sequence and is connected with an end block, the end block is slidably connected with the sliding groove through a sliding block, the other side of the end block is rotatably connected with a threaded rod, the surface of the threaded rod is threadedly connected with a moving rod, the top of the moving rod is fixedly connected to the bottom of the other bracket, the surface of the side close to the end block of the threaded rod is fixedly connected with a second clamping tooth disc.
[0009] As a further description of the above-mentioned technology, the limiting mechanism comprises a through rod provided in the surface of the triangular plate, one end of the through rod is fixedly connected with an end plate, a spring is arranged between the end plate and the triangular plate and is sleeved on the surface of the through rod, the other end of the through rod extends to the inside of the cavity seat.
[0010] As a further description of the above-mentioned technology, the surface of the cavity seat is provided with a positioning hole matched with the through rod.
[0011] As a further description of the above-mentioned technology, the connecting mechanism comprises two first protruding blocks rotatably connected on both sides of the surface of one of the fixing rings, one side of the two first protruding blocks is fixedly connected with a sliding rail rod, the surface of the sliding rail rod is slidingly connected with a second protruding block, and the second protruding block is fixedly connected to the surface of the other fixing ring.
[0012] As a further description of the above-mentioned technology, the surface of the limiting block is provided with a through hole matched with the through rod.
[0013] In summary, due to the use of the above-mentioned technology, the auxiliary device for musculoskeletal ultrasound examination has the following advantages: Through the setting of the limiting piece, the lifting mechanism, the driving mechanism and the fastening mechanism, the movement of the triangular plate drives the movement of the through rod and the center cylinder. When the center cylinder moves, the clamping ring in the cylinder moves. When the clamping ring on one side of the center cylinder is clamped with the second clamping tooth disc, the rotation of the center cylinder can drive the rotation of the second clamping tooth disc through the clamping ring. The rotation of the second clamping tooth disc drives the rotation of the threaded rod. When the threaded rod rotates, it drives the horizontal movement of the moving rod. Then the horizontal movement of the moving rod drives the horizontal movement of the bracket and the fixing ring connected to the top of the moving rod, thereby changing the distance between the two fixing rings, so as to be suitable for arms of different lengths, and the practicability is high.
[0014] When the center cylinder moves, the clamping ring in the cylinder moves. When the clamping ring on the other side of the center cylinder is clamped with the first clamping tooth disc, then the motor is started to drive the rotation of the driving rod. Then the rotation of the driving rod drives the rotation of the end block. The rotation of the end block can drive the rotation of the center cylinder. The rotation of the center cylinder can drive the rotation of the first clamping tooth disc through the clamping ring. The rotation of the first clamping tooth disc drives the rotation of the worm. The rotation of the worm drives the rotation of the worm wheel. When the worm wheel rotates, it drives the upward lifting of one end of the lifting clamp. Then the upward lifting of one end of the lifting clamp drives the lifting of the guide frame. The guide frame is fixedly connected to the bottom of one of the brackets, so when the guide frame is lifted, the center ring, the air bag ring and the fixing ring arranged above the guide frame are lifted, so the patient's arm and forearm can be tilted and lifted, and the arm can be stably lifted to a certain angle, avoiding the interruption of the examination or the decline of the image quality due to the inability to continuously maintain a specific angle or the change of the patient's body position due to fatigue. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 An overall front perspective view provided by an embodiment of the present application is shown; Figure 2 A triangular plate adjustment rear perspective view provided by an embodiment of the present application is shown; Figure 3 A cavity seat cutaway view provided by an embodiment of the present application is shown; Figure 4A structure diagram of a fastening mechanism provided by an embodiment of the present application is shown; Figure 5 A structure diagram of a lifting mechanism provided by an embodiment of the present application is shown; Figure 6 A structure diagram of a driving mechanism provided by an embodiment of the present application is shown; Figure 7 A front view provided by an embodiment of the present application is shown; Figure 8 A structure diagram of a fastening mechanism provided by an embodiment of the present application is shown; Figure 6 An enlarged view at A in FIG. 4; Figure 9 A structure diagram of a fastening mechanism provided by an embodiment of the present application is shown; Figure 7 An enlarged view at B in FIG. 4.
[0016] Legend: 1, cavity seat; 2, fixed ring; 3, limiting piece; 301, triangular plate; 302, plug-in rod; 303, center cylinder; 304, snap ring; 305, limiting mechanism; 3051, through rod; 3052, spring; 4, mounting frame; 5, lifting mechanism; 501, worm; 502, worm gear; 503, lifting clamp; 504, guide frame; 505, first clamping tooth disc; 6, driving mechanism; 601, motor; 602, driving rod; 603, end block; 604, threaded rod; 605, moving rod; 606, second clamping tooth disc; 7, fastening mechanism; 701, center ring; 702, limiting block; 703, air bag ring; 704, air pipe; 705, pressing ball; 8, bracket; 9, connecting mechanism; 901, first protruding block; 902, slide rail rod; 903, second protruding block; 10, positioning hole; 11, through hole. DETAILED DESCRIPTION
[0017] The technical auxiliary device for musculoskeletal ultrasound examination in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the scope of protection of the present application.
[0018] Reference Figures 1-9The embodiment provides an auxiliary device for musculoskeletal ultrasonic examination, which comprises a cavity seat 1 and two fixing rings 2, a guide groove is formed in the top of the cavity seat 1, a limiting piece 3 is slidably connected in the guide groove, an installation frame 4 is fixedly connected to the inner bottom wall of the cavity seat 1, a lifting mechanism 5 is rotatably connected to one side of the installation frame 4, a driving mechanism 6 is fixedly connected to one side of the cavity seat 1, the two fixing rings 2 are connected through a connecting mechanism 9, through grooves are formed in the bottoms of the two fixing rings 2, fastening mechanisms 7 are rotatably connected to the interiors of the two fixing rings 2, and cradles 8 are fixedly connected to the bottoms of the two fixing rings 2. The limiting piece 3 comprises a triangular plate 301 slidably connected in the guide groove, a plug-in rod 302 is fixedly connected to the top of the triangular plate 301, a center cylinder 303 is rotatably connected to the bottom of the triangular plate 301, clamping rings 304 are fixedly connected to the inner walls of the center cylinder 303, a sliding groove is formed in the interior of the center cylinder 303, and a limiting mechanism 305 is arranged on one side of the surface of the triangular plate 301; when the triangular plate 301 slides horizontally and transversely in the guide groove, the center cylinder 303 can be driven to move, and when the center cylinder 303 moves, the clamping rings 304 in the cylinder can be driven to move. The limiting mechanism 305 comprises a through rod 3051 arranged on the surface of the triangular plate 301, an end plate is fixedly connected to one end of the through rod 3051, springs 3052 are arranged between the end plate and the triangular plate 301 and are sleeved on the surface of the through rod 3051, and the other end of the through rod 3051 extends into the interior of the cavity seat 1. A positioning hole 10 that is matched with the through rod 3051 is formed in the surface of the cavity seat 1.
[0019] The positioning hole 10 is in number of two, the end of the through rod 3051 penetrates through the triangular plate 301, then the two ends of the spring 3052 are fixedly connected with the end plate and the triangular plate 301 respectively, the end plate is fixedly connected with the through rod 3051, the through rod 3051 is connected with the triangular plate 301 through the spring 3052, so that the through rod 3051 can only move horizontally, when the through rod 3051 is pulled to draw the end of the through rod 3051 out of the positioning hole 10, the through rod 3051 is pushed in the transverse direction of the guide groove, so that the triangular plate 301 is driven to move transversely, then the positions of the triangular plate 301 and the through rod 3051 are limited through the positioning hole 10, the distance that the triangular plate 301 needs to move can be accurately provided to the operator through the two positioning holes 10, and the triangular plate 301 is prevented from moving excessively.
[0020] Specifically, as Figure 5 , Figure 6 and Figure 8As shown, the drive mechanism 6 includes a motor 601 mounted on one side of the cavity seat 1, the output end of the motor 601 is connected with a drive rod 602, the other end of the drive rod 602 sequentially passes through the cavity seat 1 and the worm 501 and is connected with an end block 603, wherein the end block 603 is slidingly connected with the sliding block and the sliding groove, the other side of the end block 603 is rotatably connected with a threaded rod 604, the surface of the threaded rod 604 is threadedly connected with a moving rod 605, the top of the moving rod 605 is fixedly connected to the bottom of the other bracket 8, the surface of the threaded rod 604 close to the end block 603 is fixedly connected with a second toothed disc 606, the motor 601 is started to drive the drive rod 602 to rotate, and then the drive rod 602 drives the end block 603 to rotate, wherein the outer surface of the end block 603 is slidingly connected with the inner wall of the center cylinder 303, the drive rod 602 can drive the center cylinder 303 to rotate, wherein the second toothed disc 606 is matched with the clamping ring 304 in the center cylinder 303, when the end block 603 rotates, the center cylinder 303 can be driven to rotate, then the moving triangular plate 301 drives the penetrating rod 3051 and the center cylinder 303 to move, when the center cylinder 303 moves, the clamping ring 304 in the cylinder moves, when the clamping ring 304 on one side of the center cylinder 303 is clamped with the second toothed disc 606, the rotation of the center cylinder 303 can drive the second toothed disc 606 to rotate through the clamping ring 304, the rotation of the second toothed disc 606 drives the threaded rod 604 to rotate, when the threaded rod 604 rotates, the moving rod 605 moves horizontally, then the horizontal movement of the moving rod 605 drives the bracket 8 and the fixed ring 2 connected to the top of the moving rod 605 to move horizontally, thereby changing the distance between the two fixed rings 2, so as to be suitable for arms of different lengths, and the practicability is high.
[0021] Specifically, as shown in Figure 2 , Figure 3 and Figure 4 , the fastening mechanism 7 includes a center ring 701 rotatably connected inside the fixed ring 2, the bottom of the center ring 701 is fixedly connected with a limiting block 702 matched with the penetrating groove, the inside of the center ring 701 is fixedly connected with an air bag ring 703, the top of the air bag ring 703 is fixedly connected with an air pipe 704, the other end of the air pipe 704 sequentially passes through the center ring 701 and the fixed ring 2 and is connected with a pressing ball 705, the surface of the air pipe 704 is provided with a valve; The surface of the limiting block 702 is provided with a penetrating hole 11 matched with the penetrating rod 3051.
[0022] When the distance between the two fixing rings 2 is adjusted, the patient will put his arms through the two fixing rings 2, lay the arms on the two air bag rings 703, and then continuously press the ball 705 to inflate the air bag ring 703, and then the air bag ring 703 is inflated to fix the wrist and elbow of the patient's arm, so as to avoid the shaking and involuntary movement of the patient during the ultrasonic examination, and to avoid the influence of the examination. At the same time, after fixing the wrist and elbow, the doctor can instruct the patient to perform targeted isometric contraction, for example, after fixing the elbow and wrist, the patient tries to flex the middle finger but does not really move (isometric contraction), at this time, only the superficial flexor of the finger will independently contract and clearly show the thickening of the muscle belly and the darkening of the echo under the ultrasonic, which can help the doctor to diagnose the subtle muscle tear and nerve innervation abnormality (such as muscle denervation change after nerve compression), and avoid the interference of synergistic muscles caused by other joint movements, so as to ensure that the observed signal comes from the target muscle. The outer side of the center ring 701 is rotatable with the fixing ring 2, and the inner side is fixedly connected with the air bag ring 703. Therefore, when the center ring 701 and the air bag ring 703 can rotate inside the fixing ring 2, when the both ends of the penetrating rod 3051 pass through the two penetrating holes 11, the air bag ring 703 and the center ring 701 on both sides can be limited, and the center ring 701 and the air bag ring 703 cannot rotate inside the fixing ring 2. When the patient's arm is examined, the patient's hand needs to be moved, one end of the penetrating rod 3051 is pulled out of one of the penetrating holes 11, so that one set of air bag rings 703 and center rings 701 can rotate inside one of the fixing rings 2, so that the patient's wrist can rotate, and the elbow is still fixed. At this time, after fixing the elbow, the influence of the humerus movement and the elbow flexion and extension is greatly reduced and eliminated.
[0023] Specifically, as shown in Figure 6 and Figure 7 The lifting mechanism 5 comprises a worm 501 rotatably connected to one side of the mounting frame 4, one end of the worm 501 is rotatably connected to one side of the inner wall of the cavity seat 1, one side of the surface of the worm 501 is fixedly connected with a first clamping tooth disc 505, the surface of the worm 501 is engaged with a worm gear 502, the surface of the worm gear 502 is fixedly connected with a lifting clamp 503, the two sides of the lifting clamp 503 are rotatably connected with the two sides of the guide groove, the inside of the lifting clamp 503 is slidably connected with a guide frame 504, and the top of the guide frame 504 is fixedly connected to the bottom of one of the brackets 8.
[0024] The first toothed disc 505 is matched with the snap ring 304 in the center tube 303, when the center tube 303 moves, the snap ring 304 in the center tube 303 also moves, when the snap ring 304 on the other side of the center tube 303 is matched with the first toothed disc 505, then the motor 601 starts to drive the driving rod 602 to rotate, the driving rod 602 drives the end block 603 to rotate, the end block 603 drives the center tube 303 to rotate, the center tube 303 drives the first toothed disc 505 to rotate through the snap ring 304, the first toothed disc 505 drives the worm 501 to rotate, the worm 501 drives the worm gear 502 to rotate, the worm gear 502 drives the lifting clamp 503 to lift one end upwards, then the lifting clamp 503 drives the guide frame 504 to lift when one end is lifted, the guide frame 504 is fixedly connected with the bottom of one of the brackets 8, therefore the center ring 701, the air bag ring 703 and the fixed ring 2 arranged above the guide frame 504 are lifted when the guide frame 504 is lifted, therefore the patient's arm and forearm can be inclined and lifted, when the arm and forearm are subjected to ultrasonic examination, the muscle groups of the forearm are complex, the tendons of many muscles are cross-running, when the arm and forearm are inclined and lifted, the overlap can be reduced, the doctor can track and scan each tendon or muscle one by one, which is more easily displayed clearly by ultrasonic, at the same time, the elbow of the arm is fixed and the wrist is released, when the arm and forearm are inclined and lifted again, the patient can more clearly observe whether the tendon smoothly slides in the tendon sheath, whether there is adhesion, jumping (half dislocation) or abnormal friction with the surrounding tissue when the wrist or fingers (such as making a fist, stretching the wrist, ulnar deviation / radial deviation) move, the interference caused by the shaking of the shoulder joint or the body is reduced, at the same time, the forearm is lifted after the elbow is fixed, the muscle groups of the forearm naturally sag and redistribute under the action of gravity, therefore a better ultrasonic sound window can be created between the surface of the skeleton (such as the radius and the ulna) and the muscle, the interference of the skeleton is reduced, and the deep structure (such as the interosseous membrane and the deep nerve and blood vessels) is displayed more clearly.
[0025] The connecting mechanism 9 comprises two first protruding blocks 901 rotatably connected on the surface of one of the fixed rings 2, one side of the two first protruding blocks 901 is fixedly connected with a sliding rail rod 902, the surface of the sliding rail rod 902 is slidingly connected with a second protruding block 903, and the second protruding block 903 is fixedly connected to the surface of the other fixed ring 2.
[0026] Since one end of the sliding rail rod 902 is fixed with the first protruding block 901 and the other end is slidingly connected with the second protruding block 903, when the distance between the fixed rings 2 is adjusted, it can always ensure that the two fixed rings 2 are on the same horizontal plane.
[0027] Working principle: first pull through the rod 3051 make through the rod 3051 from the positioning hole 10 end out, along the guide slot transverse direction push through the rod 3051 can drive the triangular plate 301 transverse movement, then move the triangular plate 301 move drive through the rod 3051 and center cylinder 303 move, when the center cylinder 303 move drive ring 304 in the cylinder move, when the center cylinder 303 cylinder in one side of the ring 304 and the second card gear 606 with card, the center cylinder 303 rotation can be driven by the ring 304 second card gear 606 rotation, second card gear 606 rotation drive screw rod 604 rotation, screw rod 604 rotation drive moving rod 605 horizontal movement, then moving rod 605 horizontal movement drive moving rod 605 top connected bracket 8 and fixed ring 2 horizontal movement, in turn make the distance between the two fixed ring 2 change, thus suitable for different length of arm; When the distance between the two fixed ring 2 adjust well, the patient will pass through the two fixed ring 2, the arm flat to two air bag ring 703, then constantly hold pressure ball 705 to air bag ring 703 inflation, then air bag ring 703 bulge will be patient arm wrist and elbow fixed, avoid ultrasonic examination, patients due to fatigue caused by shaking and involuntary movement influence check; When the need to lift the patient forearm, when the center cylinder 303 move drive ring 304 in the cylinder move, when the center cylinder 303 cylinder in the other side of the ring 304 and the first card gear 505 with card, then the motor 601 start drive rod 602 rotation, then drive rod 602 rotation drive end block 603 rotation, end block 603 rotation can drive the center cylinder 303 rotation, the center cylinder 303 rotation can be driven by the ring 304 first card gear 505 rotation, first card gear 505 rotation drive worm 501 rotation, worm 501 rotation drive worm gear 502 rotation, worm gear 502 rotation drive lifting clamp 503 one end upward, then lifting clamp 503 one end lift drive guide frame 504 together, guide frame 504 and one of the bracket 8 bottom fixed connection, therefore guide frame 504 lift will be the center ring 701, air bag ring 703 and fixed ring 2 set in the guide frame 504 above, thus can be the patient's arm forearm tilt lift, in the arm forearm ultrasonic examination, the muscle group of forearm is complex, many muscle tendon is cross running, when the arm forearm tilt lift, can reduce the overlap, the doctor can one by one to each tendon or muscle tracking and scanning, more easily be ultrasonic clearly displayed; When the elbow of the arm is fixed and the wrist is released, the forearm of the arm is tilted and lifted, and the patient performs the action, the wrist or finger (such as making a fist, stretching the wrist, ulnar deviation / radial deviation) can more clearly observe whether the tendon smoothly slides in the tendon sheath, whether there is adhesion, jumping (subluxation) or abnormal friction with the surrounding tissue, and reduce the interference caused by the shaking of the shoulder joint or the body; At the same time, when the elbow of the arm is fixed and the wrist is released, the forearm of the arm is tilted and lifted, and the patient performs the action, the wrist or finger (such as making a fist, stretching the wrist, ulnar deviation / radial deviation) can more clearly observe whether the tendon smoothly slides in the tendon sheath, whether there is adhesion, jumping (subluxation) or abnormal friction with the surrounding tissue, and reduce the interference caused by the shaking of the shoulder joint or the body, and at the same time, after fixing the elbow, the forearm is lifted, the muscle groups of the forearm will naturally sag and redistribute under the action of gravity, so that a better ultrasound window can be created between the surface of the skeleton (such as the radius and the ulna) and the muscles, reducing the interference of bone artifacts, and the deep structures (such as the interosseous membrane and the deep nerves and blood vessels) are displayed more clearly.
[0028] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art within the technical range disclosed by the present application can make equivalent replacement or change according to the technical concept of the present application, which should be covered within the protection scope of the present application.
Claims
1. An auxiliary device for musculoskeletal ultrasound examination, comprising a cavity seat (1) and two fixing rings (2), characterized in that, The top of the cavity seat (1) is provided with a guide groove, and the inside of the guide groove is slidably connected with a limiting member (3). The inner bottom wall of the cavity seat (1) is fixedly connected with a mounting bracket (4). A lifting mechanism (5) is rotatably connected to one side of the mounting bracket (4). A driving mechanism (6) is fixedly connected to one side of the cavity seat (1). The two fixed rings (2) are connected by a connecting mechanism (9). The bottom of the two fixed rings (2) is provided with a through groove. The inside of the two fixed rings (2) is rotatably connected with a fastening mechanism (7). The bottom of the two fixed rings (2) is fixedly connected with a bracket (8). The lifting mechanism (5) includes a worm gear (501) rotatably connected to one side of the mounting bracket (4). One end of the worm gear (501) is rotatably connected to one side of the inner wall of the cavity seat (1). A first toothed disc (505) is fixedly connected to one side of the surface of the worm gear (501). A worm wheel (502) meshes with the surface of the worm gear (501). A lifting clamp (503) is fixedly connected to the surface of the worm wheel (502). The two sides of the lifting clamp (503) are rotatably connected to the two sides of the guide groove. A guide frame (504) is slidably connected inside the lifting clamp (503). The top of the guide frame (504) is fixedly connected to the bottom of one of the brackets (8).
2. The auxiliary device for musculoskeletal ultrasound examination according to claim 1, characterized in that, The fastening mechanism (7) includes a central ring (701) rotatably connected inside the fixed ring (2). A limiting block (702) adapted to the through groove is fixedly connected to the bottom of the central ring (701). An airbag ring (703) is fixedly connected inside the central ring (701). An air tube (704) is fixedly connected to the top of the airbag ring (703). The other end of the air tube (704) passes through the central ring (701) and the fixed ring (2) in sequence and is connected to a pressing ball (705). A valve is provided on the surface of the air tube (704).
3. The auxiliary device for musculoskeletal ultrasound examination according to claim 1, characterized in that, The limiting component (3) includes a triangular plate (301) slidably connected inside the guide groove. A plug rod (302) is fixedly connected to the top of the triangular plate (301). A central cylinder (303) is rotatably connected to the bottom of the triangular plate (301). Snap rings (304) are fixedly connected to both sides of the inner wall of the central cylinder (303). A sliding groove is opened inside the central cylinder (303). A limiting mechanism (305) passes through one side of the surface of the triangular plate (301).
4. The auxiliary device for musculoskeletal ultrasound examination according to claim 1, characterized in that, The drive mechanism (6) includes a motor (601) installed on one side of the cavity seat (1). The output end of the motor (601) is connected to a drive rod (602). The other end of the drive rod (602) passes through the cavity seat (1) and the worm gear (501) in sequence and is connected to an end block (603). The end block (603) is slidably connected to the slide groove by a slider. The other side of the end block (603) is rotatably connected to a threaded rod (604). The surface of the threaded rod (604) is threadedly connected to a moving rod (605). The top of the moving rod (605) is fixedly connected to the bottom of another bracket (8). The surface of the threaded rod (604) near the end block (603) is fixedly connected to a second toothed disc (606).
5. The auxiliary device for musculoskeletal ultrasound examination according to claim 3, characterized in that, The limiting mechanism (305) includes a through rod (3051) passing through the surface of the triangular plate (301). One end of the through rod (3051) is fixedly connected to an end plate. A spring (3052) is provided between the end plate and the triangular plate (301) and the spring (3052) is sleeved on the surface of the through rod (3051). The other end of the through rod (3051) extends into the interior of the cavity seat (1).
6. The auxiliary device for musculoskeletal ultrasound examination according to claim 1, characterized in that, The surface of the cavity seat (1) is provided with positioning holes (10) that are adapted to the through rod (3051).
7. The auxiliary device for musculoskeletal ultrasound examination according to claim 1, characterized in that, The connecting mechanism (9) includes two first protrusions (901) rotatably connected to both sides of the surface of one of the fixed rings (2), a slide rail (902) is fixedly connected to one side of the two first protrusions (901), a second protrusion (903) is slidably connected to the surface of the slide rail (902), and the second protrusion (903) is fixedly connected to the surface of the other fixed ring (2).
8. The auxiliary device for musculoskeletal ultrasound examination according to claim 2, characterized in that, The surface of the limiting block (702) is provided with a through hole (11) that is compatible with the through rod (3051).