A biomechanical measurement system

Abstract

The application relates to the technical field of medical instruments, in particular to a biomechanics measuring system which comprises a rack, a driver, a transmission member and a dynamometer. The driver is arranged on the rack and has an output shaft. The transmission member is arranged on the output shaft of the driver, the driver is used for driving the transmission member to rotate, the transmission member is provided with a specimen placement position, and the transmission member rotates to drive the specimen on the specimen placement position to rotate. The transmission member is detachably arranged on the output shaft of the driver. One output shaft is arranged on each side of the driver, and the transmission member is replaced and installed on the other output shaft to test mirror-symmetrical specimens (such as the left and right upper limbs of a patient). In the application, one output shaft is arranged on each side of the driver, so that the system can easily switch to test mirror-symmetrical specimens (such as the left and right upper limbs of a patient), carry out dynamic isometric, isometric test and fatigue test in different flexion and extension and rotation positions, and the flexibility and adaptability of the test are improved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more specifically, to a biomechanical measurement system. Background Technology

[0002] With the development of biomechanical technology, the elbow joint, as one of the important joints of the human upper limb, has attracted widespread research interest due to its complex three-dimensional motion characteristics. The elbow joint consists of the humeroradial joint, humeroulnar joint, and proximal radioulnar joint. Its main movements include flexion and extension of the elbow joint and rotation of the radius and ulna, which are complex movements performed in three-dimensional space. Elbow joint movement involves not only skeletal motion but also the coordinated action of surrounding muscles, tendons, ligaments, joint capsules, and other soft tissues, collectively ensuring the stability and functionality of the elbow joint. The stability of the elbow joint varies with its motion state; the elbow joint exhibits different stability and biomechanical characteristics at different angles.

[0003] While existing research employs various methods for biomechanical measurements of the elbow joint, most focus on static measurements, where the elbow is fixed in a specific position. Although this method provides some data on the static stability of the elbow joint, it has limitations in assessing its functionality because actual elbow movement is a dynamic process. Static measurements cannot comprehensively reflect the stability and changes of the elbow joint under different flexion angles and forearm rotation conditions. Furthermore, static measurements cannot simulate the various loading conditions that the elbow joint might encounter during actual movement, thus making it difficult to accurately assess the biomechanical performance of the elbow joint under dynamic conditions.

[0004] Currently, there is a lack of instruments, both domestically and internationally, capable of accurately simulating the dynamic movement of the elbow joint and performing precise biomechanical measurements. Most existing measuring devices can only provide results under static conditions and cannot accurately capture the motion characteristics of the elbow joint under dynamic conditions. This limitation makes it difficult for researchers to fully understand the true biomechanical behavior of the elbow joint under different motion states, especially when pathological changes occur in the elbow joint, making accurate assessment of its biomechanical characteristics even more challenging. For example, pathological conditions such as degenerative tendon lesions, ligament injuries, or fractures around the elbow joint can significantly affect its stability and motor function. To more effectively assess elbow joint stability and surgical outcomes, an instrument capable of accurately measuring the biomechanical characteristics of the elbow joint under dynamic conditions is needed. Utility Model Content

[0005] The purpose of this application is to provide a biomechanical measurement system that can accurately simulate the dynamic movement of the elbow joint and perform precise biomechanical measurements.

[0006] To achieve the above objectives, this utility model provides a biomechanical measurement system, comprising:

[0007] frame;

[0008] A driver, which is mounted on the frame, has an output shaft and a sensor for detecting and recording motion parameters of the output shaft is provided at the output shaft (210);

[0009] A transmission component is disposed on the output shaft of the driver, the driver is used to drive the transmission component to rotate, the transmission component is provided with a specimen placement position, and the rotation of the transmission component drives the specimen in the specimen placement position to rotate.

[0010] A force measuring instrument, used to detect and record the biomechanical parameters of a specimen;

[0011] The transmission component is detachably mounted on the output shaft of the driver;

[0012] The driver has an output shaft on each side, and the transmission component is replaced and installed on the other output shaft to test a mirror-symmetrical specimen.

[0013] In an optional implementation, it further includes:

[0014] The support member and the transmission member are provided with specimen placement positions. The support member is detachably mounted on the housing of the driver so that the support member and the transmission member are located on the same side of the driver. The support member and the transmission member can support the specimen to maintain a stable movement trajectory.

[0015] In an optional embodiment, the support includes a base plate and an adjustable plate. One end of the base plate is disposed on the housing of the driver, and the other end of the base plate is provided with a first mounting elongated hole. The adjustable plate is detachably mounted on the first mounting elongated hole of the base plate.

[0016] In an optional embodiment, a second mounting elongated hole is also provided on the other end of the base plate;

[0017] The force measuring instrument includes a force measuring module and a mounting plate. One end of the mounting plate is detachably mounted on the second mounting elongated hole of the base plate so that the mounting plate can be adjusted in position along the extension direction of the second mounting elongated hole. The force measuring module is used to detect the biomechanical parameters of the specimen. The force measuring module is detachably mounted on the mounting plate so that the force measuring module can be adjusted in position along the extension direction of the mounting plate. There is an angle α between the extension direction of the mounting plate and the extension direction of the second mounting elongated hole.

[0018] In an optional embodiment, the transmission component includes a first bracket, a connecting plate, an adjusting plate, and a fixing ring. One end of the first bracket is detachably mounted on the output shaft of the driver, and the fixing ring is detachably mounted on the other end of the first bracket. The fixing ring is capable of measuring the torsion angle of the specimen. The connecting plate is detachably mounted on the middle part of the first bracket, and a first mounting elongated hole is provided on the connecting plate. The adjusting plate is detachably mounted on the first mounting elongated hole of the connecting plate.

[0019] In an optional embodiment, the fixing ring includes a base ring body and a torsion ring body, the base ring body being fixedly disposed on the other end of the first bracket, and the torsion ring body being rotatably mounted on the base ring body.

[0020] In an optional embodiment, the base ring is provided with limiting posts, and two or more limiting posts are spaced apart around the end face of the base ring in a circumferential direction. The torsion ring is provided with an arc-shaped through groove extending around the circumferential direction of the torsion ring, and two or more arc-shaped through grooves are provided corresponding to the limiting posts. The torsion ring is mounted on the limiting posts of the base ring through the arc-shaped through grooves. The limiting posts cooperate with the inner wall of the arc-shaped through grooves so that the torsion ring remains coaxial with the base ring during rotation.

[0021] In an optional embodiment, a plurality of measuring through holes are provided on the circumferential surface of the torsion ring, and the measuring through holes are equidistantly distributed around the circumference of the torsion ring.

[0022] In an optional embodiment, the frame includes legs and a support rod, the support rod being vertically arranged, one end of the support rod being connected to the driver, and the other end of the support rod being provided with the legs, the legs keeping the support rod vertical.

[0023] In an optional embodiment, the support rod is a telescopic rod.

[0024] In this application, an output shaft is provided on each side of the driver, enabling the system to easily switch between testing mirror-symmetrical specimens (such as the left and right upper limbs of a patient), thus improving the flexibility and adaptability of the testing. Furthermore, the detachable design of the transmission components and force gauge allows the system to be flexibly configured and adjusted according to specific research needs.

[0025] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the structure from one perspective of one embodiment of a biomechanical measurement system provided in this application;

[0028] Figure 2 A two-view structural schematic diagram of one embodiment of a biomechanical measurement system provided in this application;

[0029] Figure 3 A three-view structural schematic diagram of one embodiment of a biomechanical measurement system provided in this application;

[0030] Figure 4 This is a three-view structural schematic diagram of a portion of one embodiment of a biomechanical measurement system provided in this application.

[0031] icon:

[0032] 100 - Frame; 110 - Support leg; 120 - Support rod; 130 - Casters;

[0033] 200 - Driver; 210 - Output shaft;

[0034] 300 - Transmission component; 310 - First bracket; 320 - Connecting plate; 330 - Adjusting plate; 340 - Fixing ring; 350 - Basic ring body; 360 - Torsion ring body; 370 - Limiting post;

[0035] 400 - Force gauge; 410 - Force measuring module; 420 - Mounting plate;

[0036] 500 - Supporting component; 510 - Base plate; 520 - Adjustable plate. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0039] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0040] The structures that play a stabilizing role in the elbow joint differ at different flexion angles. It was previously believed that the increased tension of the ligaments and muscles around the elbow joint plays a stabilizing role in the extended position, while the stability supported by the olecranon trochlea structure is not as good as that in the 90-degree flexion position. In the 90-degree flexion position, the stabilizing role of the bony structures is dominant, while the stabilizing role of the soft tissues is reduced due to their decreased tension. At the same time, different forearm rotation angles cause changes in the position of the radial head and the interosseous membranes with different tensions have a certain influence. Therefore, the biomechanical measurement system provided in the embodiments of this application is intended to: (1) accurately simulate the actual situation of each joint and surrounding muscles and ligaments of the human elbow joint during the entire process of flexion and extension; (2) achieve the measurement of the biomechanical characteristics of the elbow joint at the specific location required for the study by precisely quantifying and controlling the flexion and extension angle, forearm rotation angle, and flexion and extension frequency; (3) effectively combine stress testing to control the stress applied at the required location and dynamically measure the stress required for the joint to produce different inversion and valgus angles, so as to meet the needs of elbow joint mechanics research under various conditions; (4) dynamic isotonic and isometric measurements and fatigue tests, etc.

[0041] The embodiments of this application provide a biomechanical measurement system, through which an operator can obtain the required biomechanical parameters through the above tests. These biomechanical parameters include, for example, active flexion-extension angles, passive flexion-extension angles, static and dynamic curve results, and specific parameters of fatigue test.

[0042] The biomechanical measurement system includes a frame 100, a driver 200, a transmission component 300, and a force gauge 400.

[0043] For example, the rack 100 is fixedly or movably mounted on the ground.

[0044] like Figure 1 and Figure 2 As shown, the driver 200 is mounted on the frame 100 and has an output shaft 210. Exemplarily, the driver 200 contains a motor, and the output shaft 210 of the motor is also the output shaft 210 of the driver 200. This motor can control the rotational speed, reciprocating frequency, and angle of the output shaft 210. A sensor for detecting and recording the motion parameters of the output shaft 210 is provided at the output shaft 210. The sensor, for example, is an angular velocity sensor, which can detect and record motion parameters such as the dynamic rate during the driving process of the output shaft 210. The detection and recording frequency can be, for example, real-time detection and recording, or detection and recording at a certain period, which can be greater than or equal to 0.5 seconds.

[0045] like Figure 1 and Figure 2 As shown, the transmission component 300 is mounted on the output shaft 210 of the driver 200. The driver 200 is used to drive the transmission component 300 to rotate. The transmission component 300 is provided with a specimen placement position. The rotation of the transmission component 300 drives the specimen in the specimen placement position to rotate.

[0046] like Figure 1 As shown, the force gauge 400 is used to detect and record the biomechanical parameters of the specimen. The detection and recording frequency can be, for example, real-time detection and recording, or detection and recording at a certain cycle, which is greater than or equal to 0.5 seconds.

[0047] like Figure 2 As shown, the transmission component 300 is detachably mounted on the output shaft 210 of the driver 200.

[0048] like Figure 3 As shown, the transmission component 300 and the force measuring instrument 400 are mounted on the driver 200. There is a space between the transmission component 300 and the force measuring instrument 400 to accommodate the specimen; this space is the specimen placement position. Figure 1 As shown, the specimen is placed in the specimen placement position formed by the space between the transmission component 300 and the force measuring instrument 400.

[0049] The driver 200 has an output shaft 210 on each side, and the transmission component 300 is replaced and installed on the other output shaft 210 to test the mirror-symmetric specimen.

[0050] For example, the specimen being measured is, for instance, the patient's upper limb, and the specimen mirror-symmetrical to the patient's left upper limb is the patient's right upper limb. An output shaft 210 is provided on each side of the driver 200, enabling the detection of the patient's left and right upper limbs.

[0051] For example, the motor controls the frequency, rate, and angle of elbow flexion movement of the specimen on the transmission component 300 via the output shaft 210. Of course, during testing, the transmission component 300 can also be rotated by the flexion and extension movement of the specimen, and the force gauge 400 can detect the biomechanical parameters of the specimen in active flexion and extension.

[0052] In this application, the measurement system, through precise quantitative control of flexion-extension angles, forearm rotation angles, and flexion-extension frequency, enables the measurement of the biomechanical properties of the elbow joint at specific locations required for the study. This multi-dimensional control capability allows researchers to gain a deeper understanding of the mechanical behavior of the elbow joint under different conditions.

[0053] In this application, by incorporating stress testing capabilities, the system can control the application of stress to the desired location and dynamically measure the stress required for the joint to produce different inversion and valgus angles. This is of great significance for assessing the stability, strength, and injury risk of the elbow joint under different stress conditions.

[0054] In this application, an output shaft 210 is provided on each side of the driver 200, which allows the system to easily switch between testing mirror-symmetrical specimens (such as the left and right upper limbs of a patient), improving the flexibility and adaptability of the test. In addition, the detachable design of the transmission component 300 and the force gauge 400 also allows the system to be flexibly configured and adjusted according to specific research needs.

[0055] like Figure 2 and Figure 3 As shown, in one embodiment, the biomechanical measurement system further includes a support 500; as Figure 3 As shown, specimen placement positions are provided on the support member 500 and the transmission member 300. As shown in the figure, the specimen is located on the support member 500 and the transmission member 300; the support member 500 and the transmission member 300 can support the specimen to maintain a stable movement trajectory.

[0056] The support 500 is detachably mounted on the housing of the driver 200.

[0057] After testing the left upper limb, the right upper limb needs to be tested. The transmission component 300 is removed from one output shaft 210 and installed on another output shaft 210. Since the support component 500 is detachably installed on the driver 200, the support component 500 is also removed and installed on the same side as the transmission component 300, so that the support component 500 and the transmission component 300 are located on the same side of the driver 200, so that the support component 500 and the transmission component 300 can still cooperate to test the right upper limb.

[0058] The detachable connection between the support 500 and the drive 200 housing can be, for example, a bolted connection or a snap-fit ​​connection.

[0059] By designing the support 500 to be detachably mounted on the housing of the driver 200, the system can easily adapt to different testing needs. When it is necessary to test mirror-symmetrical specimens (such as the left and right upper limbs), the user can simply transfer the drive 300 and the support 500 from one output shaft 210 of the driver 200 to the other output shaft 210 without the need for complex adjustments or reconfigurations of the entire system.

[0060] The support component 500 and the transmission component 300 work together to support the specimen, ensuring that the specimen maintains a stable trajectory during testing. This helps reduce testing errors and improves the accuracy and reliability of the data. A stable trajectory is crucial for accurately assessing the biomechanical properties of the elbow joint.

[0061] The detachable design of the support component 500 and the transmission component 300 allows researchers to complete more tests in a shorter time, which greatly improves testing efficiency and accelerates the research process.

[0062] like Figure 2 As shown, in one embodiment, the support 500 includes a base plate 510 and an adjustable plate 520. One end of the base plate 510 is disposed on the housing of the driver 200, and the other end of the base plate 510 is provided with a first mounting elongated hole.

[0063] For example, one end of the base plate 510 is detachably connected to the driver 200, and the detachable connection can be in the form of a bolt connection or a snap-fit ​​connection.

[0064] The adjustable plate 520 is detachably mounted on the first mounting elongated hole of the base plate 510, so that the position of the adjustable plate 520 can be adjusted along the extension direction of the first mounting elongated hole, so that the support 500 can adapt to specimens of different sizes.

[0065] For example, the length extension direction of the first mounting elongated hole is consistent with the length direction of the base plate 510.

[0066] For example, the connection between the adjustable plate 520 and the first elongated hole of the base plate 510 can be a bolt connection or a snap-fit ​​connection.

[0067] The adjustable plate 520, with its detachable and position-adjustable design at the first mounting elongated hole, allows the support 500 to easily accommodate specimens of different sizes. This design enables the biomechanical measurement system to be widely used in testing various human upper limbs (e.g., different body types, ages, genders), improving the system's versatility and practicality.

[0068] The adjustable plate 520's position adjustment function allows users to precisely adjust it according to the actual size of the specimen, ensuring that the specimen maintains a stable and accurate posture during testing. This helps improve the accuracy and reliability of biomechanical measurements, providing researchers with more accurate data support.

[0069] For example, the base plate 510 is hollowed out to reduce the weight of the base plate 510.

[0070] For example, in order to accurately support and limit the specimen, in one embodiment, the adjustable plate 520 is provided with at least two on the base plate 510, and the first mounting elongated hole is provided with at least two.

[0071] like Figure 1 and Figure 2 As shown, in one embodiment, a second mounting elongated hole is also provided on the other end of the base plate 510. Exemplarily, the second mounting elongated hole is parallel to the first mounting elongated hole, and the first and second mounting elongated holes are distributed sequentially along a straight line.

[0072] The force gauge 400 includes a force measuring module 410 and a mounting plate 420. One end of the mounting plate 420 is detachably mounted on a second mounting elongated hole in the base plate 510, allowing the mounting plate 420 to be adjusted in position along the extension direction of the second mounting elongated hole. Exemplarily, the mounting plate 420 is mounted on the base plate 510 at the second mounting elongated hole in a detachable connection such as a bolt connection or a snap-fit.

[0073] The force measuring module 410 is used to detect and record the biomechanical parameters of the specimen. The force measuring module 410 is detachably mounted on the mounting plate 420 so that the position of the force measuring module 410 can be adjusted along the extension direction of the mounting plate 420. There is an angle α between the extension direction of the mounting plate 420 and the extension direction of the second mounting elongated hole. For example, the angle α = 90°. Of course, the angle α can also be set to other sizes, such as 70°, 80° or 100°.

[0074] By mounting a removable mounting plate 420 on the second mounting elongated hole, and allowing the mounting plate 420 to be adjusted in position along the extension direction of the second mounting elongated hole, the measurement system of this application can easily adapt to specimens of different sizes and shapes. This design allows the force gauge 400 to be installed and adjusted more flexibly to meet various testing needs.

[0075] The force-measuring module 410 is detachably mounted on the mounting plate 420 and allows for position adjustment along the extension direction of the mounting plate 420. This design not only improves the installation flexibility of the force-measuring module 410 but also ensures that it can be accurately aligned with the test area of ​​the specimen, thereby improving the accuracy and reliability of biomechanical parameter measurements.

[0076] like Figure 1 and Figure 2 As shown, in one embodiment, the transmission component 300 includes a first bracket 310, a connecting plate 320, an adjusting plate 330, and a fixing ring 340.

[0077] One end of the first support 310 is detachably mounted on the output shaft 210 of the driver 200, and a retaining ring 340 is detachably mounted on the other end of the first support 310. The retaining ring 340 is capable of measuring the torsion angle of the specimen.

[0078] For example, the first bracket 310 is detachably connected to the output shaft 210 by means of bolts or snap-fit; for example, the retaining ring 340 is detachably connected to the first bracket 310 by means of bolts or snap-fit.

[0079] The connecting plate 320 is detachably mounted in the middle of the first bracket 310.

[0080] like Figure 3 As shown, the connecting plate 320 is provided with a first assembly elongated hole, and the adjusting plate 330 can limit the displacement of the specimen. The adjusting plate 330 is detachably installed at the first assembly elongated hole of the connecting plate 320, so that the adjusting plate 330 can be adjusted in the direction of the first assembly elongated hole.

[0081] For example, the length extension direction of the first mounting elongated hole is parallel to the length direction of the connecting plate 320. For example, the length direction of the connecting plate 320 is the same as the length direction of the base plate 510.

[0082] The retaining ring 340 is designed to be detachably mounted on the first support 310 and is capable of measuring the torsion angle of the specimen. This configuration ensures the accuracy and reliability of the torsion angle measurement.

[0083] The adjusting plate 330 is detachably mounted at the first mounting elongated hole of the connecting plate 320, enabling flexible adjustment along the direction of the first mounting elongated hole. This design allows users to easily adjust the position of the adjusting plate 330 according to the size of the specimen and testing requirements, thereby ensuring the stability and accuracy of the specimen during the testing process.

[0084] like Figure 3 and Figure 4 As shown, in one embodiment, the fixed ring 340 includes a base ring 350 and a torsion ring 360. The base ring 350 is fixedly disposed on the other end of the first bracket 310, and the torsion ring 360 is rotatably mounted on the base ring 350. The rotation of the specimen causes the torsion ring 360 to rotate relative to the base ring 350, thereby measuring the torsion angle of the specimen.

[0085] The torsion ring 360 is rotatable relative to the base ring 350. When the specimen is driven to rotate, it causes the torsion ring 360 to rotate as well. This design allows us to accurately measure the torsion angle, because the rotation of the torsion ring 360 directly reflects the degree of torsion of the specimen.

[0086] The base ring 350 is fixedly mounted on the first bracket 310, while the torsion ring 360 is rotatably mounted on the base ring 350. This stable mounting structure ensures the accuracy and reliability of torsion measurements.

[0087] like Figure 4 As shown, in one embodiment, a limiting post 370 is provided on the base ring 350. The limiting post 370 is fixedly provided on the end face of the base ring 350 by means of bolt connection, threaded connection, snap-fit, welding or integral molding.

[0088] Two or more limiting posts 370 are provided at intervals around the circumference of the base ring 350 on the end face of the base ring 350. An arc-shaped through groove extending around the circumference of the torsion ring 360 is provided on the torsion ring 360, and two or more arc-shaped through grooves are provided corresponding to the limiting posts 370.

[0089] For example, two limiting posts 370 are provided, and two arc-shaped through slots are provided accordingly. In other embodiments, three limiting posts 370 are provided, and three arc-shaped through slots are provided accordingly. Of course, other numbers of limiting posts 370 and arc-shaped through slots can be provided, such as four, five, six, or seven.

[0090] The torsion ring 360 is mounted on the limiting post 370 of the base ring 350 through its arc-shaped through groove. The limiting post 370 cooperates with the inner wall of the arc-shaped through groove so that the torsion ring 360 remains coaxial with the base ring 350 during rotation, thereby enhancing the structural stability and reliability of the fixed ring 340.

[0091] like Figure 4 As shown, in one embodiment, a plurality of measuring through holes are provided on the circumferential surface of the torsion ring 360, and the measuring through holes are equidistantly distributed around the circumference of the torsion ring 360.

[0092] During use, the radius and ulna of the specimen are fixed with Kirschner wires through different measuring holes, and the torsion ring is rotated 360 degrees according to the marked angle, so that the forearm rotation angle during elbow joint movement can be accurately quantified.

[0093] For example, the number of measuring through holes may be eight, ten, or fifteen, etc.

[0094] like Figure 1As shown, in one embodiment, the frame 100 includes a leg 110 and a support rod 120. The support rod 120 is vertically arranged, one end of the support rod 120 is connected to the driver 200, and the other end of the support rod 120 is provided with the leg 110, which keeps the support rod 120 vertical.

[0095] For example, such as Figure 1 As shown, the support leg 110 is a polygonal plate structure, and two support legs 110 are provided on the other end of the support rod 120.

[0096] like Figure 1 As shown, in one embodiment, the outrigger 110 is provided with casters 130.

[0097] For example, each of the two ends of each support leg 110 is provided with a caster wheel 130.

[0098] In one embodiment, the support rod 120 is a telescopic rod. The telescopic rod can be, for example, a hydraulic telescopic rod, a pneumatic telescopic rod, an electric actuator, a screw mechanism, or a linear motor.

[0099] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0100] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A biomechanical measurement system, characterized in that, include: Rack (100); A driver (200) is mounted on the frame (100) and has an output shaft (210) at which a sensor for detecting and recording motion parameters of the output shaft (210) is provided; A transmission component (300) is disposed on the output shaft (210) of the driver (200). The driver (200) is used to drive the transmission component (300) to rotate. A specimen placement position is provided on the transmission component (300). The rotation of the transmission component (300) drives the specimen on the specimen placement position to rotate. A force measuring instrument (400) is used to detect and record the biomechanical parameters of a specimen; The transmission component (300) is detachably mounted on the output shaft (210) of the driver (200); The driver (200) has an output shaft (210) on each side, and the transmission component (300) is replaced and installed on the other output shaft (210) to test mirror-symmetric specimens.

2. The biomechanical measurement system according to claim 1, characterized in that, Also includes: A support member (500) and a transmission member (300) are provided with specimen placement positions. The support member (500) is detachably mounted on the housing of the driver (200) so that the support member (500) and the transmission member (300) are located on the same side of the driver (200). The support member (500) and the transmission member (300) can support the specimen to maintain a stable movement trajectory.

3. The biomechanical measurement system according to claim 2, characterized in that, The support member (500) includes a base plate (510) and an adjustable plate (520). One end of the base plate (510) is disposed on the housing of the driver (200), and the other end of the base plate (510) is provided with a first mounting elongated hole. The adjustable plate (520) is detachably mounted on the first mounting elongated hole of the base plate (510).

4. The biomechanical measurement system according to claim 3, characterized in that, A second mounting elongated hole is also provided at the other end of the base plate (510); The force measuring instrument (400) includes a force measuring module (410) and a mounting plate (420). One end of the mounting plate (420) is detachably mounted on the second mounting elongated hole of the base plate (510) so that the mounting plate (420) can be adjusted in position along the extension direction of the second mounting elongated hole. The force measuring module (410) is used to detect and record the biomechanical parameters of the specimen. The force measuring module (410) is detachably mounted on the mounting plate (420) so that the force measuring module (410) can be adjusted in position along the extension direction of the mounting plate (420). The extension direction of the mounting plate (420) and the extension direction of the second mounting elongated hole have an angle α.

5. The biomechanical measurement system according to claim 1, characterized in that, The transmission component (300) includes a first bracket (310), a connecting plate (320), an adjusting plate (330), and a fixing ring (340). One end of the first bracket (310) is detachably mounted on the output shaft (210) of the driver (200), and the fixing ring (340) is detachably mounted on the other end of the first bracket (310). The fixing ring (340) is capable of measuring the torsion angle of the specimen. The connecting plate (320) is detachably mounted on the middle part of the first bracket (310), and a first mounting elongated hole is provided on the connecting plate (320). The adjusting plate (330) is detachably mounted on the first mounting elongated hole of the connecting plate (320).

6. The biomechanical measurement system according to claim 5, characterized in that, The fixed ring (340) includes a base ring body (350) and a torsion ring body (360). The base ring body (350) is fixedly disposed on the other end of the first bracket (310), and the torsion ring body (360) is rotatably mounted on the base ring body (350).

7. The biomechanical measurement system according to claim 6, characterized in that, The base ring (350) is provided with limiting posts (370), and two or more limiting posts (370) are provided at intervals around the end face of the base ring (350) in the circumferential direction. The torsion ring (360) is provided with an arc-shaped through groove extending around the circumferential direction of the torsion ring (360), and two or more arc-shaped through grooves are provided corresponding to the limiting posts (370). The torsion ring (360) is installed on the limiting posts (370) of the base ring (350) through the arc-shaped through groove. The limiting posts (370) cooperate with the inner wall of the arc-shaped through groove so that the torsion ring (360) remains coaxial with the base ring (350) during rotation.

8. The biomechanical measurement system according to claim 6, characterized in that, The torsion ring (360) has a plurality of measuring through holes on its circumferential surface, and the measuring through holes are equidistantly distributed around the circumference of the torsion ring (360).

9. The biomechanical measurement system according to claim 1, characterized in that, The frame (100) includes a support leg (110) and a support rod (120). The support rod (120) is vertically arranged. One end of the support rod (120) is connected to the driver (200). The support leg (110) is provided on the other end of the support rod (120). The support leg (110) keeps the support rod (120) vertical.

10. The biomechanical measurement system according to claim 9, characterized in that, The support rod (120) is a telescopic rod.

Images