Popliteal muscle contractility tester
By designing a hamstring contraction force tester, using the motion capture platform and force measuring table to transfer the calf tension as pressure, combined with kinematic analysis, the existing device's large size and complex structure are solved, and accurate mechanical detection of the hamstring muscles and hip and knee joints is achieved, and unified testing standards are provided.
Patent Information
- Application Number
- CN202422206312.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-09-09
AI Technical Summary
The existing hamstring muscle strength test device is large in size and complex in structure, making it difficult to detect the overall stress of the human body. The weight affects the test results, and lacks unified standards, resulting in large differences in judgment results.
A hamstring contraction force tester was designed, including a motion capture platform, a base frame, a top frame, a rotating assembly and a force measuring table. The tester kneels on the second force measuring table with both feet, and uses a hook hanging to transfer the calf tension as pressure. Combined with the motion capture platform to capture joint motion data, kinematics is used to calculate the mechanical condition of the hamstring muscle, hip and knee joints.
It realizes convenient and accurate detection of the mechanical conditions of the hamstrings and hip and knee joints, reduces the impact of weight, provides unified testing standards, and reduces artificial errors.
Smart Images
Figure CN223232706U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hamstring muscle testing, in particular to a hamstring muscle contraction force tester. Background Art
[0002] Currently, hamstring strength testing is widely researched both domestically and internationally, and a wide variety of existing devices are available. The main focus is on medical technology and sports rehabilitation. Clinical upper and lower limb strength testing results are primarily based on observations by physicians and other professionals, and standardized through intelligent devices. This reduces the influence of subjective factors on test results, minimizes discrepancies in judgment, establishes a unified standard, and obtains intuitive data for analysis, providing effective guidance and reference for subsequent disease treatment and rehabilitation. However, existing testing devices have some shortcomings during use, such as being large and complex in structure, making it difficult to detect the overall force applied to the human body and unable to reduce the impact of weight. Utility Model Content
[0003] The purpose of the present invention is to provide a hamstring contraction force tester to solve the problems raised in the above background technology.
[0004] The technical solution of the utility model is: a hamstring contraction force tester, including a motion capture platform, a base frame is set on the top of the motion capture platform, a top frame is fixed on the top of the base frame, two second force platforms for measuring knee pressure are set on the top frame, a rotating component is fixed on one side of the top frame, the flip end of the rotating component is connected to two symmetrical hooks, two symmetrical first force platforms are set on the motion capture platform, and one end of the rotating component away from the hook is in conflict with the top of the first force platform.
[0005] The effect achieved by the above components is: place the device on the motion capture platform, place the two feet of the rotating component on the first force platform, and be careful not to let the rest of the device except the feet of the rotating component touch the first force platform. The tester kneels on the second force platform with both feet inserted into the hooks to complete the Nordic push test action. The two second force platforms located at the knees can detect the downward pressure of the knees on the top frame and the bottom frame. The hooks on the tester's ankles can transfer the upward pulling force of the calf to the first force platform, and convert the pulling force of the calf into pressure on the first force platform. The motion data of each joint of the tester is captured through the motion capture platform, and then the dynamic data is inverted using kinematics to obtain the mechanical conditions of human tissues such as the hamstrings, hip and knee joints during the Nordic push action, which is convenient and easy.
[0006] Preferably, the rotating assembly includes a fixed shaft fixed on one side of the top frame, two symmetrical rotating sleeves are rotatably sleeved on the fixed shaft, a rotating frame is fixed to the bottom of the rotating sleeve, a support block that contacts the top of the first force platform is fixed to one end of the rotating frame, and the end of the rotating frame away from the support block is connected to the hook.
[0007] The effect achieved by the above components is: the end of the rotating frame connected to the hook can drive the support block to rotate along the fixed axis when pulled, and the support block is used to press down the first force platform to quickly obtain the calf tension data.
[0008] Preferably, the hooking member includes an end ring fixed to the end side of the rotating frame, a collar is sleeved inside the end ring, an extension rod is fixed to the top end of the collar, and a hook is fixed to the top end of the extension rod.
[0009] The effect achieved by the above components is that the hook can be used to hook the ankle of the test person when performing the Nordic press, with the purpose of fixing the ankle position to complete the Nordic press, which is convenient for use.
[0010] Preferably, the inner arc side of the hook is wrapped with a protective pad.
[0011] The effect achieved by the above components is that the connection between the hook and the ankle can be protected by the protective pad.
[0012] Preferably, a plurality of supporting legs are fixed to the bottom group of the chassis.
[0013] The effect achieved by the above components is that the base frame can be supported by the supporting legs.
[0014] Preferably, two symmetrical moving wheels are rotatably mounted on one side of the bottom end of the base frame.
[0015] The effect achieved by the above components is that the moving wheels can facilitate personnel to transfer the device.
[0016] The present invention provides a hamstring contraction force tester through improvement, which has the following improvements and advantages compared with the prior art:
[0017] The utility model has the tester kneel on the second force platform with both feet inserted into the hook and hanger to complete the Nordic press test movement, wherein the two second force platforms located at the knees can detect the downward pressure of the knees on the top frame and the bottom frame, and the hook and hanger at the ankle of the tester can transfer the upward pulling force of the calf to the first force platform, converting the pulling force of the calf into pressure on the first force platform, and the motion data of each joint of the tester is captured by the motion capture platform, and then the dynamic data is inversely calculated by using kinematics to obtain the mechanical conditions of human tissues such as the hamstrings, hip and knee joints during the Nordic press movement, which is convenient and easy. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The present invention will be further explained below with reference to the accompanying drawings and embodiments:
[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0020] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the utility model;
[0021] Figure 3 It is a schematic structural diagram of the side section of the utility model.
[0022] Description of reference numerals:
[0023] 1. Motion capture platform; 2. First force platform; 3. Base frame; 4. Support legs; 5. Top frame; 6. Second force platform; 7. Rotating assembly; 71. Fixed axis; 72. Rotating frame; 73. Rotating sleeve; 74. Support block; 8. Hook; 81. End ring; 82. Sleeve ring; 83. Extension rod; 84. Hook; 85. Protective pad; 9. Moving wheel. DETAILED DESCRIPTION
[0024] The following is a detailed description of the present invention, clearly and completely describing the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0025] The present invention provides a hamstring contraction force tester through improvement. The technical solution of the present invention is:
[0026] In the embodiment of the present utility model, as Figure 1-Figure 3As shown, a hamstring contraction force tester includes a motion capture platform 1, a bottom frame 3 is mounted on the top of the motion capture platform 1, a plurality of supporting legs 4 are fixed to the bottom group of the bottom frame 3, two symmetrical moving wheels 9 are rotatably installed on one side of the bottom end of the bottom frame 3, and the moving wheels 9 can facilitate personnel to transfer it. A top frame 5 is fixed on the top of the bottom frame 3, and two second force platforms 6 for measuring knee pressure are arranged on the top frame 5, a rotating component 7 is fixed on one side of the top frame 5, and the flip end of the rotating component 7 is connected to two symmetrical hooks 8, and two symmetrical first force platforms 2 are arranged on the motion capture platform 1, and the end of the rotating component 7 away from the hook 8 conflicts with the top of the first force platform 2. First, the power capture platform 1, the first force platform 2 and the second force platform 6 are connected to the computer mapping system, and the changes in data such as torque and angle are detected by software to obtain accurate In order to obtain the biomechanical data, the device is placed on the motion capture platform 1, and the two feet of the rotating component 7 are placed on the first force platform 2. Note that except for the feet of the rotating component 7, the rest of the device should not touch the first force platform 2. The tester kneels on the second force platform 6 with both feet inserted into the hook 8 to complete the Nordic push test movement. The two second force platforms 6 located at the knees can detect the downward pressure of the knees on the top frame 5 and the bottom frame 3. The hook 8 at the tester's ankle can transfer the upward pulling force of the calf to the first force platform 2, and convert the pulling force of the calf into pressure on the first force platform 2. The motion data of each joint of the tester is captured through the motion capture platform 1, and the dynamic data is inversely calculated through kinematics to obtain the mechanical conditions of human tissues such as the hamstrings, hip and knee joints during the Nordic push movement.
[0027] In the embodiment of the present utility model, the rotating assembly 7 includes a fixed shaft 71 fixed to one side of the top frame 5, and two symmetrical rotating sleeves 73 are rotatably sleeved on the fixed shaft 71. A rotating frame 72 is fixed to the bottom of the rotating sleeve 73, and one end of the rotating frame 72 is fixed to a support block 74 that abuts against the top of the first force platform 2. The end of the rotating frame 72 away from the support block 74 is connected to the hook 8. The end of the rotating frame 72 connected to the hook 8 can drive the support block 74 to rotate along the fixed shaft 71 when pulled, and the support block 74 is used. The support block 74 presses down the first force platform 2, which can quickly obtain the calf tension data. The hook component 8 includes an end ring 81 fixed to the end side of the rotating frame 72, and a ring 82 is provided inside the end ring 81. An extension rod 83 is fixed to the top of the ring 82, and a hook 84 is fixed to the top of the extension rod 83. The hook 84 can be used to hook the ankle when the tester performs the Nordic push-up movement. The inner arc side of the hook 84 is wrapped with a protective pad 85, which can protect the connection between the hook 84 and the ankle.
[0028] The working principle of the hamstring contraction force tester provided by the present invention is as follows: the device is placed on the motion capture platform 1, the power capture platform 1, the first force platform 2 and the second force platform 6 are connected to the computer mapping system, the two feet of the rotating component 7 are placed on the first force platform 2, and it is important to note that the rest of the device except the feet of the rotating component 7 should not touch the first force platform 2. The tester kneels on the second force platform 6 with both feet inserted into the hook 8 to complete the Nordic push test movement, wherein the two second force platforms located at the knees are 6 can detect the downward pressure of the knee on the top frame 5 and the bottom frame 3. The hook 8 on the tester's ankle can transfer the upward pulling force of the calf to the first force platform 2, converting the pulling force of the calf into pressure on the first force platform 2. The motion data of each joint of the tester is captured by the motion capture platform 1, and then the dynamic data is inversely calculated using kinematics to obtain the mechanical conditions of human tissues such as the hamstrings, hip and knee joints during the Nordic press. The changes in data such as torque and angle are detected by the computer mapping system to obtain accurate biomechanical data.
[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A hamstring contraction force tester, comprising a motion capture platform (1), characterized in that: The motion capture platform (1) is provided with a base frame (3) on the top, a top frame (5) is fixed on the top of the base frame (3), two second force platforms (6) for measuring knee pressure are provided on the top frame (5), a rotating component (7) is fixed on one side of the top frame (5), the flip end of the rotating component (7) is connected to two symmetrical hooks (8), and two symmetrical first force platforms (2) are provided on the motion capture platform (1), and one end of the rotating component (7) away from the hook (8) contacts the top of the first force platform (2).
2. The hamstring contraction force tester according to claim 1, characterized in that: The rotating assembly (7) comprises a fixed shaft (71) fixed to one side of the top frame (5); two symmetrical rotating sleeves (73) are rotatably sleeved on the fixed shaft (71); a rotating frame (72) is fixed to the bottom of the rotating sleeve (73); a supporting block (74) that contacts the top of the first force measuring platform (2) is fixed to one end of the rotating frame (72); and an end of the rotating frame (72) away from the supporting block (74) is connected to the hook member (8).
3. The hamstring contraction force tester according to claim 2, characterized in that: The hook member (8) comprises an end ring (81) fixed to the end side of the rotating frame (72), a sleeve ring (82) is sleeved inside the end ring (81), an extension rod (83) is fixed to the top end of the sleeve ring (82), and a hook (84) is fixed to the top end of the extension rod (83).
4. The hamstring contraction force tester according to claim 3, characterized in that: The inner arc side of the hook (84) is wrapped with a protective pad (85).
5. The hamstring contraction force tester according to claim 1, characterized in that: A plurality of supporting legs (4) are fixed to the bottom group of the base frame (3).
6. The hamstring contraction force tester according to claim 1, characterized in that: Two symmetrical moving wheels (9) are rotatably mounted on one side of the bottom end of the base frame (3).