Joint movement measuring device
By designing a joint motion measurement device including articulated support rods and IMU sensors, the problem of inaccurate judgment of scapular dynamic disorders is solved, and accurate recording of scapular motion trajectory and provision of treatment data is achieved.
Patent Information
- Application Number
- CN202421460140.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-06-24
AI Technical Summary
The prior art is difficult to accurately capture and analyze the dynamic motion state of the scapula, resulting in the inaccurate and objective judgment of scapula dynamic disorder.
A joint motion measuring device is designed, including a measuring instrument composed of a transverse strut and a vertical strut articulated joint. The movement trajectory of the scapula is recorded in real time by sliding the positioning assembly and IMU sensor on the surface of the transverse strut and the vertical strut.
Accurate recording of the scapula movement trajectory is achieved, more objective treatment data and basis are provided, which reduces the difficulty of diagnosis among medical staff and improves the targeted treatment.
Smart Images
Figure CN222917530U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of joint movement, in particular to a joint movement measuring device. Background Art
[0002] With the rapid development of medical technology, the analysis and research of human movement are becoming increasingly in-depth. As an important bone structure connecting the upper limb and the trunk, the movement state of the scapula directly affects the overall function and movement efficiency of the upper limb. Therefore, the accurate capture and analysis of scapular movement are of great significance in the fields of medicine, sports medicine, rehabilitation medicine, etc.
[0003] The traditional method for judging scapular dyskinesia in patients is usually a physical examination method, such as palpation, observation, etc. Although it can initially judge the movement state of the scapula, it is limited by the examiner's experience and subjective judgment, and it is difficult to ensure the accuracy and objectivity of the results. The results obtained by this method cannot provide accurate treatment data and basis in the process of treating patients, so effective treatment cannot be carried out according to the patient's condition.
[0004] Currently, the judgment of scapular dyskinesia can be achieved through medical imaging techniques such as X-ray, CT, MRI, etc. Although they can clearly show the structure of the scapula, they cannot capture the changes of the scapula during dynamic movement in real time.
[0005] Therefore, a joint movement measuring device is proposed to solve the above problems. Content of the Utility Model
[0006] The purpose of the utility model is to provide a joint movement measuring device, which solves the above-mentioned technical problems.
[0007] To achieve the above purpose, the utility model provides the following technical solution: A joint movement measuring device includes a measuring instrument, which is composed of a horizontal support rod and a vertical support rod hinged together. An extension rod is extended at the midline position of the horizontal support rod. A positioning component is slidably sleeved on the surface of the horizontal support rod. The positioning component includes an adjustment block. A chute is penetrated through the surface of the adjustment block. The inner wall of the chute is slidably sleeved on the surface of the horizontal support rod. A positioning rod is fixed on the adjustment block. An IMU sensor is fixed on the top of the adjustment block. A positioning component is also slidably sleeved at one end of the vertical support rod away from the horizontal support rod.
[0008] Preferably, a threaded hole is penetrated and opened at the bottom end of the inner wall of the sliding groove. The end of the positioning rod is threadedly sleeved on the inner wall of the sliding groove through the threaded hole. A groove is concavely opened at the top of the positioning rod. A spring is fixedly installed on the inner wall of the groove. A limiting sliding hole is horizontally penetrated and opened on the surface of the positioning rod and is communicated with the groove. A pressing head is slidably sleeved on the inner wall of the limiting sliding hole. A sliding rod is fixedly installed at the end of the pressing head. The sliding rod is piston-connected to the inner wall of the groove. A limiting rubber pad is fixedly installed at the top of the sliding rod. The bottom of the sliding rod is fixedly connected to the spring.
[0009] Preferably, an IMU sensor is fixedly installed on the surface of the extension rod.
[0010] Preferably, scales are opened on the surfaces of the horizontal support rod and the vertical support rod.
[0011] Preferably, a rubber head is fixedly sleeved at the lower end of the positioning rod.
[0012] Compared with the related art, a joint motion measurement device provided by the present utility model has the following beneficial effects:
[0013] The present utility model provides a joint motion measurement device. By a medical staff holding the measuring instrument to move the positioning components at both ends of the horizontal support rod and the positioning components at the ends of the vertical support rod to appropriate positions, and then the positioning rod is attached to the scapula part of the patient. When the patient performs joint activities, the horizontal support rod and the vertical support rod will swing synchronously due to the friction between the positioning rod and the scapula part. At this time, the IMU sensors fixedly installed on the top of the adjusting block and the top of the extension rod record the motion trajectory of the scapula part (the motion trajectory of the scapula part is presented by recording the motion trajectories of the horizontal support rod, the vertical support rod and the extension rod through the IMU sensors), so that the motion trajectory of the scapula can provide accurate treatment data and basis through the multi-point IMU sensors, without the need for medical staff to judge the condition according to experience, and can more effectively treat the patient's condition. Moreover, the scapula part is located deep, and it is very difficult to judge only by the naked eye, which can effectively reduce the diagnosis difficulty of medical staff. And the measuring instrument has a simple structure, stronger practicability and is conducive to popularization and use.
[0014] The present utility model provides a joint motion measurement device. When diagnosing different patients, by pressing down the pressing head to slide it on the inner wall of the limiting sliding hole, the sliding rod is driven to slide on the inner wall of the groove. During this process, the spring is stressed and contracts to store energy, so that the limiting rubber pad moves downward and disengages from the state of fitting with the surface of the horizontal support rod or the vertical support rod. When the adjusting block is no longer limited by the friction generated by the fitting of the limiting rubber pad with the horizontal support rod or the vertical support rod, it can slide freely on the surface of the horizontal support rod or the vertical support rod. After the positioning component moves to a suitable position, release the pressing head, and the spring rebounds to drive the limiting rubber pad to reset and fit with the surface of the horizontal support rod or the vertical support rod again, so that the positioning component can be stable on the surface of the horizontal support rod or the vertical support rod, effectively improving the adaptability of the measuring instrument, maintaining the stability of the measuring instrument during diagnosis, and ensuring the accuracy of IMU sensor data acquisition. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic structural diagram of the measuring instrument of the present utility model;
[0016] Figure 2 is a schematic structural diagram of the vertical cross bar of the present utility model;
[0017] Figure 3 is a schematic structural diagram of the positioning component of the present utility model;
[0018] Figure 4 is a cross-sectional view of the positioning rod structure of the present utility model.
[0019] In the figure: 1, measuring instrument; 11, horizontal support rod; 12, vertical support rod; 13, extension rod; 2, positioning component; 21, adjusting block; 22, sliding groove; 23, positioning rod; 24, sliding rod; 25, limiting rubber pad; 26, groove; 27, limiting sliding hole; 28, pressing head; 29, spring; 3, IMU sensor. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] Please refer to Figures 1 - 4 , the present utility model provides a technical solution, including a measuring instrument 1. The measuring instrument 1 is composed of a horizontally hinged support rod 11 and a vertically hinged support rod 12. An extension rod 13 is extended at the midline position of the horizontally hinged support rod 11. A positioning component 2 is slidably sleeved on the surface of the horizontally hinged support rod 11. The positioning component 2 includes an adjusting block 21. A sliding groove 22 is penetrated through the surface of the adjusting block 21. The inner wall of the sliding groove 22 is slidably sleeved on the surface of the horizontally hinged support rod 11. A positioning rod 23 is fixedly arranged on the adjusting block 21. An IMU sensor 3 is fixedly arranged on the top of the adjusting block 21. A positioning component 2 is also slidably sleeved at one end of the vertically hinged support rod 12 away from the horizontally hinged support rod 11; an IMU sensor 3 is fixedly installed on the surface of the extension rod 13;
[0021] The medical staff holds the measuring instrument 1 to move the positioning components 2 placed at both ends of the transverse support rod 11 and the positioning components 2 at the ends of the vertical support rod 12 to appropriate positions, and then the positioning rod 23 fits the patient's scapula. When the patient moves the joint, the friction between the positioning rod 23 and the scapula will drive the transverse support rod 11 and the vertical support rod 12 to swing synchronously. At this time, the movement trajectory of the scapula is recorded by the IMU sensor 3 fixedly installed on the top of the adjustment block 21 and the top of the extension rod 13 (the movement trajectory of the scapula is presented by recording the movement trajectory of the transverse support rod 11, the vertical support rod 12 and the extension rod 13 through the IMU sensor 3), so that the movement trajectory of the scapula can provide accurate treatment data and basis through the multi-point IMU sensors 3, without the medical staff making a judgment on the condition based on experience, and can more effectively treat the patient's condition. In addition, the scapula is located in the deep layer, and it is very difficult to judge only by the naked eye, which can effectively reduce the diagnosis difficulty of medical staff. The measuring instrument 1 has a simple structure and is more practical, which is conducive to popularization and use.
[0022] A screw hole is formed through the bottom end of the inner wall of the slide groove 22, and the end of the positioning rod 23 is threadedly sleeved on the inner wall of the slide groove 22 through the screw hole. A groove 26 is formed in the top of the positioning rod 23, and a spring 29 is fixedly installed on the inner wall of the groove 26. A limited sliding hole 27 is formed through the surface of the positioning rod 23 in the horizontal direction and is connected with the groove 26. A pressure head 28 is slidably sleeved on the inner wall of the limited sliding hole 27, and a sliding rod 24 is fixedly installed on the end of the pressure head 28. The piston of the sliding rod 24 is connected to the inner wall of the groove 26. A limited rubber pad 25 is fixedly installed on the top of the sliding rod 24, and the bottom of the sliding rod 24 is fixedly connected to the spring 29.
[0023] When diagnosing different patients, the pressure head 28 is pressed downward to make it slide on the inner wall of the limiting sliding hole 27, thereby driving the sliding rod 24 to slide on the inner wall of the groove 26. During the process, the spring 29 is forced to contract and store energy, so that the limiting rubber pad 25 moves downward and is out of the contact state with the surface of the horizontal support rod 11 or the vertical support rod 12. When the adjustment block 21 is no longer limited by the friction generated by the contact between the limiting rubber pad 25 and the horizontal support rod 11 or the vertical support rod 12, it can slide freely on the surface of the horizontal support rod 11 or the vertical support rod 12. When the positioning component 2 moves to the appropriate position, the pressure head 28 is released and the spring 29 rebounds to drive the limiting rubber pad 25 to reset and re-contact the surface of the horizontal support rod 11 or the vertical support rod 12, so that the positioning component 2 can remain stable on the surface of the horizontal support rod 11 or the vertical support rod 12, effectively improving the adaptability of the measuring instrument 1, while maintaining the stability of the measuring instrument 1 during diagnosis, and ensuring the accuracy of data acquisition by the IMU sensor 3.
[0024] Scales are provided on the surfaces of the horizontal support rod 11 and the vertical support rod 12, which can make the sliding distance of the positioning component 2 more accurate, facilitate recording at the same time, and further improve the accuracy of data collection.
[0025] A rubber head is fixedly sleeved at the lower end of the positioning rod 23, so that the positioning rod 23 can be buffered when contacting the skin of the patient's scapula part, effectively improving the patient's use experience.
Claims
1. A joint motion measuring device, comprising a measuring instrument (1), characterized in that: The measuring instrument (1) is composed of a transverse support rod (11) and a vertical support rod (12) which are hinged together. An extension rod (13) is extended at the midline position of the transverse support rod (11). A positioning assembly (2) is slidably sleeved on the surface of the transverse support rod (11). The positioning assembly (2) comprises an adjustment block (21). A sliding groove (22) is provided through the surface of the adjustment block (21). The inner wall of the sliding groove (22) is slidably sleeved on the surface of the transverse support rod (11). A positioning rod (23) is fixedly provided on the adjustment block (21). An IMU sensor (3) is fixedly provided on the top of the adjustment block (21). The end of the vertical support rod (12) away from the transverse support rod (11) is also slidably sleeved on the positioning assembly (2).
2. A joint motion measurement device according to claim 1, characterized in that: A screw hole is formed through the bottom end of the inner wall of the slide groove (22), and the end of the positioning rod (23) is threadedly sleeved on the inner wall of the slide groove (22) through the screw hole. A groove (26) is formed in the top of the positioning rod (23), and a spring (29) is fixedly installed on the inner wall of the groove (26). A limit sliding hole (27) is formed through the surface of the positioning rod (23) and is communicated with the groove (26). A pressure head (28) is slidably sleeved on the inner wall of the limit sliding hole (27), and a sliding rod (24) is fixedly installed on the end of the pressure head (28). The piston of the sliding rod (24) is connected to the inner wall of the groove (26). A limit rubber pad (25) is fixedly installed on the top of the sliding rod (24), and the bottom of the sliding rod (24) is fixedly connected to the spring (29).
3. A joint motion measurement device according to claim 2, characterized in that: An IMU sensor (3) is fixedly mounted on the surface of the extension rod (13).
4. A joint motion measurement device according to claim 3, characterized in that: The surfaces of the transverse support rod (11) and the vertical support rod (12) are both provided with scales.
5. A joint motion measurement device according to claim 4, characterized in that: The lower end of the positioning rod (23) is fixedly sleeved with a rubber head.