Limb muscle function assessment device

Abstract

The present invention discloses a limb muscle function assessment device, including a mechanical part, a control circuit part, and a host computer software. The mechanical part includes three parts: an angle detection module, a muscle pressure measurement module, and a muscle resistance module. The angle detection module, the muscle pressure measurement module, and the muscle resistance module are controlled by the control circuit part and the host computer software, and the collected data are comprehensively analyzed to achieve the measurement of the muscle surface pressure of the agonist and antagonist muscles in the three states of relaxation, moderate, and tension, and the active resistance in two directions under three joint activity conditions. A limb muscle function assessment device of the present invention can be used to measure the overall muscle function, including joint activity, muscle contraction ability, muscle elasticity, and muscle extension ability, and has the advantages of comprehensive evaluation function, fast response speed, high adaptability, and easy movement.

Description

Technical Field

[0001] The invention belongs to the technical field of rehabilitation medicine clinic and medical equipment, and more specifically, relates to a limb muscle function assessment device. Background Art

[0002] Limb muscles are an important part of the human motor system. Their function is to produce movement by traction of limb bones through skeletal muscle contraction under the control of the nervous system. They are a key link for the human body to complete daily behaviors and work. A variety of physiological and pathological factors can lead to limb dysfunction or disability, and affect people's normal activities to varying degrees. For this reason, conducting muscle function examinations and assessments can effectively understand the degree and scope of muscle and nerve damage in patients, and become an important basis for formulating rehabilitation treatment plans, evaluating rehabilitation effects, and judging prognosis. It is one of the most basic and important technical contents in the rehabilitation stage of knee joint diseases, stroke sequelae, limb surgery rehabilitation period and other diseases.

[0003] At present, the content of limb muscle function assessment mainly includes two categories: muscle strength and muscle tension. Among them, muscle strength refers to the ability of muscle contraction, which is often judged by manual muscle strength test (MMT) or various muscle strength assessment instruments, including dynamometers for measuring isometric muscle strength, Cybex, Kin-com, Biodex, etc. for measuring isokinetic muscle strength; muscle tension is mainly assessed by Brunnstrom, Fugl-Meyer and other scale assessment methods; electrophysiological methods, ultrasound measurement and other technologies are also commonly used in muscle function assessment.

[0004] However, the biological characteristics of muscles are directly related to multiple factors such as joint structure, joint mobility, blood supply, nerve innervation, and motor adaptation. Its functions include multiple factors such as contractility, elasticity, and extensibility, showing multi-dimensional characteristics. Any single method or means is difficult to reflect the true state of muscle function. The existing evaluation methods mainly focus on the inspection and assessment of single muscle characteristics. Although the objective assessment technology and instrument devices established on this basis have completed quantitative measurement to a certain extent, they cannot complete the overall evaluation of muscle function, and there is a large gap between the actual motor function state of muscles. Therefore, in rehabilitation clinical practice, clinicians are more inclined to use subjective assessment methods such as personal palpation, visual observation, and scale analysis, which fully reflects the shortcomings and bottlenecks in the current muscle function assessment technology. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the present invention provides a limb muscle function assessment device to solve the problem that the evaluation method in the prior art mainly focuses on the inspection and assessment of a single muscle characteristic, cannot complete the overall evaluation of muscle function, and has a large gap with the actual motor function state of the muscle.

[0006] The technical solution of the present invention is:

[0007] A limb muscle function assessment device comprises a mechanical part, a control circuit part and a host computer software. The mechanical part comprises an angle detection module, a muscle pressure measurement module and a muscle resistance module. The angle detection module, the muscle pressure measurement module and the muscle resistance module are controlled by the control circuit part and the host computer software, and the collected data are comprehensively analyzed to achieve measurement of the muscle surface pressure of the agonist and antagonist muscles in three states of relaxation, moderate and tension, and the active resistance in two directions under three joint activity conditions.

[0008] The angle detection module includes: a front end connecting plate 1 fixed on a connecting plate connector 1, a connecting plate connector 1, an angle sensor connector fixed on a connecting plate connector 1, an angle sensor fixed on the angle sensor connector, a rear end connecting plate 1 fixed on a connecting plate connector 1, and a medical bandage 1 fixed on the connecting plate. The front end connecting plate 1 is connected to the rear end connecting plate 1 through the angle sensor connector. The front end connecting plate 1 and the rear end connecting plate 1 rotate relative to each other with the angle sensor connector as the axis to drive the angle sensor to rotate and detect the angle value. The medical bandage 1 is used to fix the forearm and upper arm of the person being tested.

[0009] The muscle pressure measurement module includes: a handle fixed on the screw connector, a screw connector, a screw motor, a screw fixed on the screw connector, a screw slider, a pressing module connector fixed on the screw slide, a sensor connector fixed on the pressing module connector, a pressure sensor installed on the sensor connector, a pressing head installed on the pressure sensor, and a counterweight installed on the screw connector; the rotation of the screw motor can drive the screw to rotate, and then drive the screw slider to move up and down; followed by driving the pressing head to move up and down through the muscle pressure measurement module connector and the sensor connector.

[0010] The muscle resistance module includes: a front end connecting plate 2 fixed on a connecting plate connector 2, a connecting plate connector 2, a torque sensor connector fixed on the connecting plate connector 2, a torque sensor fixed on the torque sensor connector, a motor fixed on the torque sensor, a rear end connecting plate 2 fixed on the connecting plate connector 2, and a medical bandage 2 fixed on the front and rear end connecting plates 2; the front end connecting plate 2 is connected to the rear end connecting plate 2 through the torque sensor connector, the front end connecting plate 2 and the rear end connecting plate 2 rotate relative to each other with the torque sensor connector as the axis to drive the torque sensor to rotate and detect the torque, and the motor causes the front end connecting plate 2 and the rear end connecting plate 2 to rotate relative to each other.

[0011] The control circuit part includes a multifunctional integrated host, a power adapter, a power switch, a microcontroller, a touch screen, a data recorder, an angle detection circuit, a pressure detection circuit, an angle sensor, a torque sensor, a pressure sensor, a motor driver, an antagonist motor, and a downward pressure motor; the multifunctional integrated host is responsible for data reception, data storage and command transmission of the entire set of equipment; the microcontroller converts the data collected by various sensors into a data format that can be processed by the multifunctional host, and sends action instructions to the actuator components, the screw motor of the muscle pressure measurement module and the antagonist motor of the muscle resistance module.

[0012] The upper computer software interface includes an angle detection and muscle pressure measurement control module, a muscle resistance control module, an angle detection and muscle pressure measurement parameter display module, a muscle resistance parameter display module, and a case management and storage module; the angle detection and muscle pressure measurement control module includes lifting, pressing, manual pressing, and releasing; the muscle resistance control module includes forward rotation, reverse rotation, upward resistance, and downward resistance; the angle detection and muscle pressure measurement parameter display module includes the number display of the pressed part, the current depth value display, the current angle value display, and the current pressure value display; the muscle resistance parameter display module includes the rotation part number display, the absolute angle value display, the step angle display, and the resistance value display; the case management and storage module includes creating a new case, entering patient information, and storing patient data.

[0013] Beneficial effects of the invention: A limb muscle function assessment device of the invention can be used to measure the overall muscle function, including joint mobility, muscle contraction ability, muscle elasticity, and muscle extension ability, and has the advantages of comprehensive evaluation function, fast response speed, high adaptability, and easy mobility. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Angle detection module;

[0015] Figure 2 Muscle pressure measurement module;

[0016] Figure 3 Muscle resistance module;

[0017] Figure 4 Multifunctional integrated host;

[0018] Figure 5 Framework diagram of muscle function assessment module;

[0019] Figure 6 The software interface of the muscle function assessment instrument (1);

[0020] Figure 7 The software interface of the muscle function assessment instrument (2);

[0021] Figure 8 Schematic diagram of muscle pressure test;

[0022] Fig. 9 Schematic diagram of muscle strength test;

[0023] Among them, 1. front end connecting plate 1 2. connecting plate connecting piece 1 3. angle sensor connecting piece 4. angle sensor 5. rear end connecting plate 1 6. medical bandage 1 7. handle 8. screw connecting piece 9. screw motor 10. screw 11. screw slider 12. muscle pressure measurement module connecting piece 13. sensor connecting piece 14. pressure sensor 15. pressing head 16. counterweight part 17. front end connecting plate 2 18. connecting plate connecting piece 2 19. torque sensor connecting piece 20. torque sensor 21. motor 22. rear end connecting plate 2 23. medical bandage 2 24. shell 25. module connecting plug 26. control screen 27. power switch 28. charging plug 29. storage card slot 30. muscle pressure measurement module 31. angle detection module 32. inspection part 33. muscle resistance module 34. inward thrust 35. outward thrust. DETAILED DESCRIPTION

[0024] In order to explain the present invention more clearly, the present invention is further described in detail below with reference to the accompanying drawings.

[0025] The present invention provides a limb muscle function assessment device, the principle of which is that the joint range of motion is a concentrated reflection of the comprehensive activity ability of the three types of muscle groups of the limb agonist, antagonist and synergist, and the control ability of the different range of motion of a single joint can reflect the activity state of the main muscles of the proximal link, including the contraction ability of the agonist, the elasticity of the antagonist and synergist, and the extensibility of the antagonist and its accessory structures. Based on this principle, the present invention adopts a multifunctional integrated controller to control the angle detection module, the muscle pressure measurement module, and the muscle resistance module and comprehensively analyze the collected data, and intends to achieve the measurement of the muscle surface pressure of the agonist (contraction side) and the antagonist (stretching side) in three states (relaxation, moderate, tension) under three joint ranges of motion (0°, middle position, extreme position), and the active resistance in two directions (inner thrust, outer thrust), so as to provide a basis for the system to assess the overall functional state of the muscle.

[0026] The invention discloses a limb muscle function assessment device, which is mainly composed of a mechanical part, a control circuit part and a host computer software.

[0027] The mechanical part includes an angle detection module, a muscle pressure measurement module, and a muscle resistance module; the angle detection module can measure the patient's joint range of motion and change the tension of the muscles in the examination area by adjusting the joint rotation angle; the muscle pressure measurement module can detect the muscle tension under different angle conditions in turn, thereby obtaining muscle surface pressure data under different tension levels (relaxed, moderate, tense); the muscle resistance module records the outward and inward thrusts generated by the muscles by monitoring the inward and outward thrust processes of the two limb links connected to the joints, and uses sensors to collect thrust data during the change of joint angles.

[0028] The control circuit part is composed of a multifunctional integrated host, a power adapter, a power switch, a microcontroller, a touch screen, a data recorder, an angle detection circuit, a pressure detection circuit, an angle sensor, a torque sensor, a pressure sensor, a motor driver, an antagonist motor, a downward pressure motor, etc.; the multifunctional integrated host is responsible for data reception, data storage and command transmission of the entire set of equipment; the microcontroller converts the data collected by various sensors into a data format that can be processed by the multifunctional host, and sends action instructions to the execution components (the screw motor of the muscle pressure measurement module and the antagonist motor of the muscle resistance module).

[0029] The upper computer software interface includes angle detection and muscle pressure measurement control module, muscle resistance control module, angle detection and muscle pressure measurement parameter display module, muscle resistance parameter display module, case management and storage module; the angle detection and muscle pressure measurement control module includes lifting, pressing, manual pressing (quick pressing), and releasing (quick rising). By clicking the manual pressing button, the pressing head can be quickly moved to the position in contact with the skin. Clicking the pressing button and the lifting button can perform muscle testing on the patient. After the test is completed, clicking the release button can make the pressure head rise quickly and clear the data. The software can automatically save the current angle value and muscle pressure data for each step of the operation; the muscle resistance control module includes forward rotation, reverse rotation, and forward rotation. Upward confrontation and downward confrontation, by clicking the forward rotation button and the reverse rotation button, you can quickly adjust the direction and angle of muscle strength confrontation, click the upward confrontation button and the downward confrontation button to fine-tune the confrontation angle, the software can automatically save the torque value (Nm) corresponding to the internal and external thrust of the joint at each angle, and convert the torque value into force value (N); angle detection and muscle pressure measurement parameter display module, including the number display of the downward pressure part, the current depth value display, the current angle value display, and the current pressure value display; the muscle strength resistance parameter display module includes the rotation part number display, the absolute angle value display, the step angle display, and the confrontation force value display (N); the case management and storage module includes the creation of new cases, the entry of patient information, and the storage of patient data.

[0030] Angle detection module such as Figure 1As shown, it includes: 1-front connecting plate 1 fixed on the connecting plate connecting piece; 2-connecting plate connecting piece 1; 3-angle sensor connecting piece fixed on the connecting plate connecting piece 1; 4-angle sensor fixed on the angle sensor connecting piece; 5-rear connecting plate 1 fixed on the connecting plate connecting piece; 6-medical bandage 1 fixed on the connecting plate. 1Front connecting plate 1 is connected to 5rear connecting plate 1 through 3 angle sensor connecting pieces, 1Front connecting plate 1 and 5rear connecting plate 1 rotate relative to each other with 3 angle sensor connecting pieces as the axis, so as to drive 4 angle sensors to rotate and detect angle values, and medical bandage 1 is used to fix the forearm and upper arm of the tested person; the movement mode of the module is: the operator ties the medical bandage 1 on the front connecting plate 1 to the front end of the joint of the patient's detection part, and ties the medical bandage on the rear connecting plate 1 to the rear end of the patient's examination part. The angle sensor records the angle value of the patient's joint in real time and transmits the value to the multifunctional integrated host.

[0031] Muscle pressure measurement module Figure 2 As shown, it includes: 7-a handle fixed on the screw connector; 8-a screw connector; 9-a screw motor; 10-a screw fixed on the screw connector; 11-a screw slider; 12-a pressing module connector fixed on the screw slide; 13-a sensor connector fixed on the pressing module connector; 14-a pressure sensor installed on the sensor connector; 15-a pressing head installed on the pressure sensor; 16-a counterweight part installed on the screw connector. The rotation of the lead screw motor 9 can drive the lead screw 10 to rotate, and then drive the lead screw slider 11 to move up and down; then through the muscle pressure measurement module connector 12 and the sensor connector 13, it drives the pressing head 15 to move up and down; the movement mode of this module is: 1. The lead screw motor receives the signal, the motor rotates forward, the pressing module connector moves downward, the pressing head is gradually pressed down according to the operator's instructions, the pressure sensor receives the pressure data in real time, and transmits the data to the multi-functional integrated host; 2. The lead screw motor receives the signal, the motor reverses, the pressing module connector moves upward, the pressing head leaves the patient's skin, and the detection is completed.

[0032] Resistance modules such as Figure 3As shown, it includes: 17-front connecting plate 2 fixed on the connecting plate connecting member, 18-connecting plate connecting member 2, 19-torque sensor connecting member fixed on the connecting plate connecting member, 20-torque sensor fixed on the torque sensor connecting member, 21-motor fixed on the torque sensor, 22-rear connecting plate 2 fixed on the connecting plate member, and 23-medical bandage 2 fixed on the front and rear connecting plates 2. The front connecting plate 2 of 17 is connected to the rear connecting plate 2 of 22 through the torque sensor connecting member 19, and the front connecting plate 2 of 17 and the rear connecting plate 2 of 22 rotate relative to each other with the torque sensor connecting member 19 as the axis to drive the torque sensor 20 to rotate and detect torque, and the motor 21 can make the front connecting plate 2 and the rear connecting plate 2 produce relative rotational movement; the movement mode of the module is: the operator ties the medical bandage 2 on the front connecting plate 2 to the front limb of the patient's detected joint, and ties the medical bandage 2 on the rear connecting plate 2 to the rear limb of the patient's detected joint. The operator issues a command, and after receiving the signal, the motor starts to rotate, stops and remains stationary after rotating to the required angle. At this time, the patient's limbs produce motion resistance, thereby generating external thrust or internal thrust. The torque sensor records the torque data of the joint in real time and transmits the data to the multi-functional integrated host.

[0033] Multifunctional integrated host such as Figure 4 As shown, it includes: 24-housing, 25-module connecting plug fixed on the housing, 26-control screen fixed on the housing, 27-power switch, 28-charging plug fixed on the housing, 29-storage card socket fixed on the housing. Operation steps: 1. Insert the charging interface into the charging plug; 2. Press the switch to turn on; 3. Insert the connecting plug into the interface on the module; 4. Through the control screen, control each module to perform detection and record data; 5. Insert the storage card into the storage card socket; 6. Store the processed data in the storage card; 7. Press the switch to turn off.

[0034] Example 1. Perform a muscle pressure test on the patient's upper arm.

[0035] (1) Operation steps (such as Figure 8(as shown): Power on the multifunctional integrated host. → Press the power button to turn on the device. → Insert the muscle pressure measurement module device interface and the angle detection module device interface into the multifunctional integrated host device connection plug in sequence. → Fix the front connection plate of the angle detection module to the patient's upper arm through a strap, and fix the rear connection plate to the patient's forearm through a strap. → Place the patient's upper arm on the pressing platform, and move the limb part to be tested under the pressing head. → Adjust the angle between the upper arm and the forearm so that the muscle tension at the measured part is in a relaxed state. → Control the pressing head and gradually press down according to the specified depth until the inspection and data transmission are completed → Lift the pressing head. → According to the intermediate state angle value displayed on the screen, adjust the angle between the upper arm and the forearm so that the muscle tension at the measured position is in an intermediate state. → Control the pressing head and gradually press down according to the specified depth until the inspection and data transmission are completed → Lift the pressing head. → According to the tension state angle value displayed on the screen, adjust the angle between the upper arm and the forearm so that the muscle tension at the measured position is in a tight state. →Control the pressing head and gradually press it down according to the specified depth until the inspection and data transmission are completed. →Lift the pressing head. →Insert the memory card into the memory card slot. →Save the measured multiple sets of muscle health status data into the memory card. →Press the power button to turn off the machine. →Unplug each interface plug in turn. →Inspection is completed.

[0036] Example 2: Perform a muscle strength test on the patient's upper arm.

[0037] Operation steps (such as Fig. 9 (as shown): Power on the multifunctional integrated host. → Press the power button to turn on the machine. → Insert the muscle resistance module device interface into the device connection plug of the multifunctional integrated host. → Fix the front connection plate of the angle detection module to the upper arm with a strap, and fix the rear connection plate to the lower arm with a strap. → Operate the control panel to rotate the motor, and make the angle between the upper arm and the lower arm reach the test angle and maintain it. → The patient begins to perform external thrust muscle resistance, and the torque sensor detects the torque value corresponding to the external thrust, and transmits the data to the multifunctional integrated host. → The patient begins to perform internal thrust muscle resistance, and the torque sensor detects the torque value corresponding to the internal thrust, and transmits the data to the multifunctional integrated host. → The host calculates the external thrust and internal thrust according to the torque value. → Insert the storage card into the storage card slot, and store the obtained muscle strength data in the storage card. → Press the power button to shut down. → Unplug each interface plug in turn. → The inspection is completed.

[0038] Although the present invention has been described above in conjunction with the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments, which are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms such as multiple treatment ends without departing from the scope of protection of the present invention and the claims, which all fall within the scope of protection of the present invention.

Claims

1. A limb muscle function assessment device, characterized in that: It includes a mechanical part, a control circuit part, and a host computer software. The mechanical part includes an angle detection module, a muscle pressure measurement module, and a muscle resistance module. The angle detection module, the muscle pressure measurement module, and the muscle resistance module are controlled by the control circuit part and the host computer software, and the collected data are comprehensively analyzed to achieve the measurement of the muscle surface pressure of the agonist and antagonist muscles in the three states of relaxation, moderate, and tension, and the active resistance in the two directions of internal thrust and external thrust under three joint activity conditions; The angle detection module comprises: a front-end connecting plate 1 fixed on a connecting plate connecting piece 1, a connecting plate connecting piece 1, an angle sensor connecting piece fixed on the connecting plate connecting piece 1, an angle sensor fixed on the angle sensor connecting piece, a rear-end connecting plate 1 fixed on the connecting plate connecting piece 1, and a medical bandage 1 fixed on the connecting plate, the front-end connecting plate 1 is connected to the rear-end connecting plate 1 through the angle sensor connecting piece, the front-end connecting plate 1 and the rear-end connecting plate 1 rotate relative to each other with the angle sensor connecting piece as the axis, so as to drive the angle sensor to rotate and detect the angle value, and the medical bandage 1 is used to fix the forearm and upper arm of the tested person; The muscle pressure measurement module comprises: a handle fixed on a lead screw connector, a lead screw connector, a lead screw motor, a lead screw fixed on the lead screw connector, a lead screw slider, a pressing module connector fixed on a lead screw slide, a sensor connector fixed on the pressing module connector, a pressure sensor installed on the sensor connector, a pressing head installed on the pressure sensor, and a counterweight installed on the lead screw connector; the rotation of the lead screw motor can drive the lead screw to rotate, and then drive the lead screw slider to move up and down; and then drive the pressing head to move up and down through the muscle pressure measurement module connector and the sensor connector; The muscle resistance module includes: a front end connecting plate 2 fixed on a connecting plate connector 2, a connecting plate connector 2, a torque sensor connector fixed on the connecting plate connector 2, a torque sensor fixed on the torque sensor connector, a motor fixed on the torque sensor, a rear end connecting plate 2 fixed on the connecting plate connector 2, and a medical bandage 2 fixed on the front and rear end connecting plates 2; the front end connecting plate 2 is connected to the rear end connecting plate 2 through the torque sensor connector, the front end connecting plate 2 and the rear end connecting plate 2 rotate relative to each other with the torque sensor connector as the axis to drive the torque sensor to rotate and detect the torque, and the motor causes the front end connecting plate 2 and the rear end connecting plate 2 to rotate relative to each other.

2. The limb muscle function assessment device according to claim 1, characterized in that: The control circuit part includes a multifunctional integrated host, a power adapter, a power switch, a microcontroller, a touch screen, a data recorder, an angle detection circuit, a pressure detection circuit, an angle sensor, a torque sensor, a pressure sensor, a motor driver, an antagonist motor, and a downward pressure motor; the multifunctional integrated host is responsible for data reception, data storage and command transmission of the entire set of equipment; the microcontroller converts the data collected by various sensors into a data format that can be processed by the multifunctional host, and sends action instructions to the actuator components, the screw motor of the muscle pressure measurement module and the antagonist motor of the muscle resistance module.

3. The limb muscle function assessment device according to claim 1, characterized in that: The upper computer software interface includes an angle detection and muscle pressure measurement control module, a muscle resistance control module, an angle detection and muscle pressure measurement parameter display module, a muscle resistance parameter display module, and a case management and storage module; the angle detection and muscle pressure measurement control module includes lifting, pressing, manual pressing, and releasing; the muscle resistance control module includes forward rotation, reverse rotation, upward resistance, and downward resistance; the angle detection and muscle pressure measurement parameter display module includes the number display of the pressed part, the current depth value display, the current angle value display, and the current pressure value display; the muscle resistance parameter display module includes the rotation part number display, the absolute angle value display, the step angle display, and the resistance value display; the case management and storage module includes creating a new case, entering patient information, and storing patient data.

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