Pedal force testing device for sarcopenia

Abstract

The invention belongs to the technical field of muscle force testing, and particularly relates to a pedaling force testing device for sarcopenia, which comprises a reset counterweight system, a pedaling force testing system, a carrying frame and a seat. According to the invention, basic constant resistance is provided by a plurality of groups of optional counterweight sheets through the reset counterweight system and auxiliary reset is realized, the pedal force test system controls the lifting of a resistance arm through an adjusting screw rod and an adjusting force arm so as to change the resistance action angle, and variable friction resistance is generated by combining the friction action of friction consumables in a resistor and the resistance arm; a counterweight basic resistance and friction adjustable resistance composite mode is adopted, and the problems that a traditional pedaling force testing device is discontinuous in resistance adjustment, rigid impact exists, the weak force value testing requirement of an epileptic cannot be finely met, operation is tedious, and resistance is nonlinear are solved. The resistance is continuous, smooth and adjustable, the test is safe and stable, and the requirements of sarcopenia patient test and curative effect evaluation are met.

Description

Technical Field

[0001] This invention belongs to the field of muscle strength testing technology, specifically referring to a pedaling force testing device for sarcopenia. Background Technology

[0002] The tonic and clonic convulsions of the limbs during a grand mal seizure cause violent muscle contractions and a sudden increase in energy consumption. Long-term repeated seizures may cause micro-injuries to muscles, degeneration of muscle fibers, and even induce "rhabdomyolysis" (rare but serious), gradually leading to muscle loss. The loss of consciousness and the risk of falling during a seizure will cause patients and their families to actively reduce exercise ("fear of injury during a seizure"). Long-term lack of resistance exercise and aerobic exercise leads to reduced muscle synthesis and fat substitution for muscle, forming a vicious cycle of "insufficient exercise, disuse atrophy of muscles, and sarcopenia".

[0003] The core requirements for resistance in force testing for patients with sarcopenia and epilepsy are stable and controllable force value, no rigid impact, and suitability for weak force values. Currently, the resistance sources of force testing devices commonly used in sarcopenia patients, who are at high risk of epilepsy, mainly include: providing resistance through the gravity of superimposed standard weights, but this can only be increased or decreased in steps according to the weight specifications, requiring multiple manual replacements of weights, which poses a high safety risk to epileptic patients due to sudden loss of control of movement, such as collisions or weight drops; and providing resistance through the compression or stretching deformation of springs, where the force value change is non-linear, the greater the spring deformation, the faster the resistance increases, and the spring stiffness coefficient is fixed, requiring the replacement of springs of different specifications to adjust the applicable range of resistance, which is cumbersome and difficult to adapt to the precise testing needs of epileptic patients due to weak muscle strength and poor motor control. Summary of the Invention

[0004] In response to the above situation and to overcome the shortcomings of the prior art, the present invention provides a pedal force testing device for sarcopenia. To solve the problems of discontinuous resistance adjustment, impact, and inability to precisely adapt to the weak force values ​​of epilepsy patients in traditional pedal force testing, the present invention adopts a combination of counterweight base resistance and friction adjustable resistance, and sets up a pedal force testing system including a reset counterweight system and an adjustable angle resistance arm. This achieves the technical effects of continuous and smooth adjustable resistance, no impact during the testing process, and precise adaptation to the testing needs of epilepsy patients.

[0005] The technical solution adopted by this invention is as follows: This invention provides a pedal force testing device for sarcopenia, including a reset counterweight system, a pedal force testing system, a mounting frame, and a seat. The seat is located above the mounting frame. The reset counterweight system is fixedly connected to the side wall of the mounting frame. The pedal force testing system is located within the mounting frame. The reset counterweight system and the pedal force testing system are connected by transmission. This layout integrates the reset counterweight, testing execution, and patient seating area into a stable frame, ensuring the structural stability and patient safety during the testing process. It is particularly suitable for the low-impact, high-stability testing needs of sarcopenia patients with epilepsy, and can effectively reduce the risk of epileptic seizures induced by device shaking or impact during the testing process.

[0006] Furthermore, the reset counterweight system includes a counterweight frame, which is fixedly connected to the side wall of the mounting frame. Multiple sets of counterweight plates are slidably arranged inside the counterweight frame. An upper counterweight wheel is rotatably arranged on the top of the counterweight frame, and a lower counterweight wheel is rotatably connected to the lower part of the counterweight frame. A counterweight rope is wound around the upper and lower counterweight wheels. One end of the counterweight rope is movably connected to the counterweight plate, and the other end of the counterweight rope is provided with a counterweight hook. The reset counterweight system provides a basic and constant resistance reference through multiple selectable counterweight plates. The upper and lower counterweight wheels ensure the smooth transmission of counterweight gravity, providing a stable and preset initial load for testing. It can also help the device reset after testing, avoiding accidental collisions or frightening stimulation to epilepsy patients caused by component rebound after testing.

[0007] Furthermore, the force testing system includes a force-pressing slide rail, a mounting slide, a foot pedal, a resistance device, a resistance arm, a force-pressing frame, and an adjustable counterweight wheel. The force-pressing frame is located within the mounting frame, the force-pressing slide rail is located inside the force-pressing frame, the mounting slide is slidably connected to the force-pressing slide rail, the foot pedal is located above the mounting slide, the resistance arm is slidably connected to the force-pressing frame, the resistance arm is equipped with a movable resistance device, and the adjustable counterweight wheel is rotatably connected to the resistance arm. The force-pressing testing system constitutes the core force transmission and adjustment chain. The foot pedal receives the force and transmits it to the adjustable resistance mechanism through the sliding component. The vertically sliding resistance arm is the key structure for achieving continuous resistance adjustment, which can finely adjust the rate of resistance change according to the muscle strength tolerance of epilepsy patients, adapting to the testing needs of patients with different seizure risk levels.

[0008] Furthermore, the bottom of the pedaling slide rail is slidably connected to symmetrical adjusting slides. Adjusting screws are threaded onto the symmetrical adjusting slides, with opposite threads at both ends. The adjusting screws are rotatably connected to the side end of the pedaling slide rail. An adjusting wheel is located at the end of the adjusting screw. An adjusting lever arm is rotatably connected to the bottom of the adjusting slide. The lower end of the adjusting lever arm is rotatably connected to a resistance arm. Through the screw-nut principle, the rotational motion of the adjusting wheel is converted into the linear motion of the adjusting slide. The adjusting lever arm precisely controls the raising and lowering of the resistance arm, thereby changing the angle of resistance application. This achieves stepless continuous adjustment of the resistance, allowing for fine adjustment of the resistance change rate according to the muscle strength tolerance of epilepsy patients, adapting to the testing needs of patients with different seizure risk levels.

[0009] Furthermore, the resistance device includes a resistance slide, with a pulley rotatably connected to the upper end of the resistance slide and a limiting gear rotatably connected to the lower end of the resistance slide. The pulley is rolledly connected to the resistance arm, and a limiting rack is provided at the bottom of the resistance arm. The limiting gear meshes with the limiting rack, and the resistance slide is slidably connected to the resistance arm through the pulley and the limiting gear. A resistance slider is slidably mounted on the resistance slide, and friction consumables are detachably mounted above the resistance slider. The resistance device is the core component for generating variable frictional resistance. The pulley ensures smooth rolling on the resistance arm; the limiting gear meshes with the rack to prevent the resistance device from sliding in directions other than the test direction; the combination of the resistance slider and the friction consumables can generate controllable sliding friction with the resistance arm under positive pressure. The magnitude of this friction force changes continuously with the change of the angle of application, with no rigid impact throughout the process, which can effectively avoid abnormal nerve discharges in epileptic patients induced by device jamming or sudden changes in resistance.

[0010] Furthermore, the bottom of the mounting slide is rotatably connected to a torque link, the lower end of which is rotatably connected to the resistance slider. The torque link converts the linear pedal force at the foot pedal into a pulling force on the resistance slider, thereby generating positive pressure between the resistance arm and the friction consumable. It is a transmission rod that connects the action input and the resistance generation. Its transmission process is smooth and without delay, which can avoid physical and psychological stimulation to epilepsy patients caused by interruption or sudden change in force transmission.

[0011] Furthermore, the counterweight rope is simultaneously connected to the adjustable counterweight wheel, and the counterweight hook is simultaneously fixed to the resistance slide. This connection method directly links the constant gravity provided by the reset counterweight system with the resistance device, providing a basic load for the test and automatically pulling the resistance device and foot pedal back to the initial position by the counterweight gravity after the test, achieving rapid reset without manual intervention. This reduces additional interference to epilepsy patients during the test and improves the safety and continuity of the test process.

[0012] The beneficial effects of the pedal force testing device for sarcopenia provided in this solution are as follows: (1) It solves the problems of step change, complicated adjustment and impact risk of traditional weight-type resistance. It adopts a resistance mode of counterweight and friction. By continuously adjusting the angle of the resistance arm, it achieves the technical effect of stepless, smooth and linear increase of resistance from the base value. At the same time, it is suitable for the testing needs of patients with sarcopenia and epilepsy, and can effectively reduce the risk of epileptic seizures induced by resistance impact. (2) It overcomes the shortcomings of nonlinearity and inconvenience of spring resistance. It sets up an adjustable resistance arm and friction consumable structure, and realizes that a wide range of continuous resistance with good linearity can be obtained by simple adjustment on a single device. It is easy and quick to operate and can quickly adapt to the resistance adjustment needs of patients with different epileptic seizure risk levels, thus improving the flexibility and safety of the test. (3) Through the linkage design of the reset counterweight system and the test system, the automatic reset of the key components of the device after the test is completed is realized, which improves the test efficiency, reduces the operational burden, reduces the interference of manual reset to epilepsy patients, and avoids possible accidental collisions during the reset process. (4) The overall structure is stable and the action is transmitted smoothly, which effectively avoids the rigid impact when the test is started, and improves the safety and comfort of elderly subjects. (5) The separate weight plate design makes it easy to quickly set the initial basal load according to the subject's estimated muscle strength, which improves the pertinence and efficiency of the test. It can accurately set a safe initial load range according to the muscle strength level and seizure risk of epilepsy patients, avoiding stimulation to patients caused by excessive initial resistance. (6) The resistance calculation model based on the principle of torque and friction allows the final pedal force value to be accurately calculated using geometric angles and known parameters, ensuring the scientificity and accuracy of the test results. The test process does not require additional high-stimulation measurement methods, which can ensure the accuracy of the data while taking into account the test safety of epilepsy patients. (7) Friction consumables can be replaced separately as wear parts, which reduces the long-term maintenance cost of the device; (8) The device has a high degree of integration and a small footprint. The seat and test frame are integrated, which makes it convenient for subjects to get up and down and position themselves. It is suitable for deployment in various scenarios such as communities and clinics. The integrated design can reduce the positional changes of epilepsy patients during the test and reduce the risk of seizures during the transfer process. (9) It can be used not only for maximum force test, but also for multiple functions such as muscle endurance assessment by controlling the resistance increase mode. It has strong functional expandability. By adjusting the resistance increase mode, it can be adapted to the tolerance of epilepsy patients, so as to achieve multi-dimensional muscle strength assessment while ensuring test safety. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the pedaling force testing device for sarcopenia proposed in this invention; Figure 2 This is a side view of a pedal force testing device for sarcopenia proposed in this invention; Figure 3 This is a schematic diagram of the resetting counterweight system; Figure 4 This is a schematic diagram of the pedal force testing system; Figure 5 Diagram A shows the transmission relationship of the pedal force testing system. Figure 6 Diagram B shows the transmission relationship of the pedal force testing system. Figure 7 Diagram showing the connection relationship of the adjustment slide; Figure 8 This is a diagram showing the connection relationships of the resistance arms; Figure 9 This is a schematic diagram of the resistant device structure; Figure 10 This diagram shows the connection relationship between the resistance slider and the resistance slide block. Figure 11 This is a diagram showing the connection between the resistance slide and the resistance arm.

[0014] The components include: 1. Reset counterweight system; 2. Pedal force testing system; 3. Mounting frame; 4. Seat; 101. Lower counterweight wheel; 102. Upper counterweight wheel; 103. Counterweight rope; 104. Counterweight hook; 105. Counterweight plate; 106. Counterweight frame; 201. Pedal force slide rail; 202. Mounting slide; 203. Foot pedal; 204. Torque linkage; 205. Resistance element; 206. Resistance arm; 207. Adjustable counterweight wheel; 208. Pedal force frame; 209. Adjustable slide; 210. Adjustable lead screw; 211. Adjustable wheel; 212. Adjustable lever arm; 213. Resistance slide; 214. Pulley; 215. Limiting gear; 216. Resistance slider; 217. Friction consumable; 218. Limiting rack.

[0015] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0017] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and 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 invention.

[0018] like Figures 1-11 As shown, the present invention provides a pedal force testing device for sarcopenia, including a reset counterweight system 1, a pedal force testing system 2, a mounting frame 3 and a seat 4. The seat 4 is disposed above the mounting frame 3. The reset counterweight system 1 is fixedly connected to the side wall of the mounting frame 3. The pedal force testing system 2 is disposed inside the mounting frame 3. The reset counterweight system 1 and the pedal force testing system 2 are connected by transmission.

[0019] The reset counterweight system 1 includes a counterweight frame 106, which is fixedly connected to the side wall of the mounting frame 3. Multiple sets of counterweight plates 105 are slidably arranged inside the counterweight frame 106. An upper counterweight wheel 102 is rotatably arranged on the top of the counterweight frame 106, and a lower counterweight wheel 101 is rotatably connected to the middle of the counterweight frame 106. A counterweight rope 103 is wound and connected to the upper counterweight wheel 102 and the lower counterweight wheel 101. One end of the counterweight rope 103 is movably connected to the counterweight plate 105, and the other end of the counterweight rope 103 is provided with a counterweight hook 104.

[0020] The pedaling force testing system 2 includes a pedaling force slide rail 201, a mounting slide 202, a foot pedal 203, a resistance device 205, a resistance arm 206, a pedaling force frame 208, and an adjustable counterweight wheel 207. The pedaling force frame 208 is located inside the mounting frame 3, the pedaling force slide rail 201 is located inside the pedaling force frame 208, the mounting slide 202 is slidably connected to the pedaling force slide rail 201, the foot pedal 203 is located above the mounting slide 202, and the resistance arm 206 is slidably connected vertically to the pedaling force frame 208. The 06 is equipped with a movable resistance arm 205, and an adjusting counterweight wheel 207 is rotatably connected to the resistance arm 206. Two sets of symmetrical adjusting slides 209 are slidably connected to the bottom of the pedal slide rail 201. Adjusting screws 210 are threaded onto the two sets of adjusting slides 209. The threads at both ends of the adjusting screws 210 are opposite. The adjusting screws 210 are simultaneously rotatably connected to the side end of the pedal slide rail 201. An adjusting wheel 211 is provided at the end of the adjusting screw 210. The bottom of the adjusting slide 209... An adjusting arm 212 is rotatably connected, and the lower end of the adjusting arm 212 is rotatably connected to the resistance arm 206. The resistance device 205 includes a resistance slide 213, the upper end of which is rotatably connected to a pulley 214, and the lower end of which is rotatably connected to a limiting gear 215. The pulley 214 is rolledly connected to the resistance arm 206. A limiting rack 218 is provided at the bottom of the resistance arm 206, and the limiting gear 215 meshes with the limiting rack 218. The resistance slide 213 is connected to the resistance arm 206. The pulley 214 and the limiting gear 215 are slidably connected to the resistance arm 206. A resistance slider 216 is slidably mounted on the resistance slide 213. A friction consumable 217 is detachably mounted on the top of the resistance slider 216. A torque connecting rod 204 is rotatably connected to the bottom of the slide 202. The lower end of the torque connecting rod 204 is rotatably connected to the resistance slider 216. The counterweight rope 103 is rotatably connected to the adjusting counterweight wheel 207. The counterweight claw 104 is fixedly connected to the resistance slide 213.

[0021] In practical use, first, based on the patient's age, gender, and health condition, especially focusing on assessing the seizure frequency, recent seizure history, and muscle endurance threshold of the epilepsy patient, select a certain number of weight plates 105 and connect them to the weight rope 103, ensuring that the weight of the weight plates 105 is within 30%-40% of the maximum muscle strength, and record the weight G of the weight plates 105; conduct 1-2 low-intensity pre-tests, using the reset weight system 1 to provide the load for the test. The patient sits on the seat 4, and the epilepsy patient is assisted to adjust their sitting posture to a stable and comfortable state, ensuring that the body does not lean forward excessively or twist, avoiding improper posture that may induce discomfort, and at the same time confirming that the patient's feet can naturally and firmly extend into the footrest 20. 3. To reduce limb swaying during testing, the height of the resistance arm 206 is adjusted by rotating the adjusting wheel 211. The rotation of the adjusting wheel 211 drives the adjusting screw 210 to rotate, which in turn drives the adjusting slide 209 to slide. When the adjusting slide 209 slides inward, it pushes one end of the adjusting lever 212 inward, and the other end of the adjusting lever 212 pushes the resistance arm 206 downward. When the adjusting slide 209 slides outward, it pushes one end of the adjusting lever 212 outward, and the other end of the adjusting lever 212 pulls the resistance arm 206 upward. During low-intensity pre-testing, the resistance arm 206 needs to be raised to its highest position. At this point, the resistance when the patient pushes their legs is equal to the weight of the counterweight 105. During the pre-test, the patient's expression, limb response, and muscle tension must be observed throughout. Only after confirming the absence of abnormal nerve excitation signals (such as limb tremors, abnormal facial color, etc.) should the formal test begin. After the patient completes the low-intensity test, a high-intensity test with gradually increasing resistance begins. The adjusting wheel 211 is rotated to lower the height of the resistance arm 206. The lowering process must be slow and uniform, pausing for 3-5 seconds after each adjustment to observe the patient's adaptation. Rapid changes in resistance should be avoided to prevent nerve stimulation and seizures. At this point, the torque link 204 and the force slide rail 201 (resistance arm 206) are... As the included angle increases, the included angle becomes X. The size of X is adjusted by the number of rotations of the adjusting wheel 211. For epilepsy patients, it is recommended to use a small number of rotations for gradient adjustment to ensure that the included angle X increases steadily, thereby achieving a smooth increase in resistance. When X increases, the friction material 217 rubs against the resistance arm 206, and the friction force is f. At this time, the patient's pedaling force is equal to the sum of the friction force and the weight of the counterweight 105. By changing the included angle between the torque link 204 and the pedaling force slide rail 201, the magnitude of the friction force is changed, maintaining the linearity and smoothness of the resistance change throughout the process, avoiding the impact of abrupt resistance changes on the neuromuscular system of epilepsy patients. At this time, the magnitude of the pedaling force is equal to the sum of the friction force f and the weight G of the counterweight 105.

[0022] Overall force analysis: as X increases, the magnitude of the frictional force is... Where f is the frictional force, u is the coefficient of friction, and N is the normal force. The direction of the frictional force is opposite to the direction of the pedaling force. F1 represents the patient's pushing force; when the patient's leg can push the pedal... G is the weight of the counterweight, i.e. Converted to In this equation, only X is a variable, while G and u are known quantities. By changing X, F1, which is the patient's pedaling force, can be measured.

[0023] The above is the specific workflow of this invention. This step can be repeated next time it is used.

[0024] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention.

[0026] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A pedaling force testing device for sarcopenia, characterized in that: The system includes a reset counterweight system (1), a pedal force testing system (2), a mounting frame (3), and a seat (4). The seat (4) is located above the mounting frame (3). The reset counterweight system (1) is fixedly connected to the side wall of the mounting frame (3). The pedal force testing system (2) is located inside the mounting frame (3). The reset counterweight system (1) and the pedal force testing system (2) are connected by a transmission. The pedal force testing system (2) includes a pedal force slide rail (201), a mounting slide (202), a pedal (203), a resistance device (205), a resistance arm (206), a pedal force frame (208), and an adjustable counterweight wheel (207). The pedal force frame (208) is equipped with... Inside the mounting frame (3), the pedal slide rail (201) is located inside the pedal frame (208), the mounting slide (202) is slidably connected to the pedal slide rail (201), the foot pedal (203) is located above the mounting slide (202), the resistance arm (206) is slidably connected to the pedal frame (208) up and down, the resistance arm (206) is provided with a movable resistance device (205), the resistance arm (206) is rotatably connected with an adjustable counterweight wheel (207), the bottom of the mounting slide (202) is rotatably connected with a torque connecting rod (204), and the other end of the torque connecting rod (204) is rotatably connected to the resistance device (205).

2. The pedal force testing device for sarcopenia according to claim 1, characterized in that: The reset counterweight system (1) includes a counterweight frame (106), which is fixedly connected to the side wall of the mounting frame (3). Multiple sets of counterweight plates (105) are slidably arranged inside the counterweight frame (106). An upper counterweight wheel (102) is rotatably provided on the top of the counterweight frame (106), and a lower counterweight wheel (101) is rotatably connected to the lower part of the counterweight frame (106). A counterweight rope (103) is wound around the upper counterweight wheel (102) and the lower counterweight wheel (101). One end of the counterweight rope (103) is movably connected to the counterweight plate (105), and the other end of the counterweight rope (103) is provided with a counterweight claw (104). The counterweight claw (104) is connected to the resistance device (205).

3. The pedaling force testing device for sarcopenia according to claim 2, characterized in that: The bottom of the pedal slide rail (201) is slidably connected to two sets of symmetrical adjusting slides (209). The two sets of adjusting slides (209) are threaded with adjusting screws (210). The threads at both ends of the adjusting screws (210) are opposite. The adjusting screws (210) are rotatably connected to the side end of the pedal slide rail (201). The bottom of the adjusting slides (209) is rotatably connected to an adjusting arm (212). The lower end of the adjusting arm (212) is rotatably connected to a resistance arm (206).

4. The pedal force testing device for sarcopenia according to claim 3, characterized in that: The resistance device (205) includes a resistance slide (213), with a pulley (214) rotatably connected to the upper end of the resistance slide (213) and a limiting gear (215) rotatably connected to the lower end of the resistance slide (213). The pulley (214) is rolledly connected to the resistance arm (206). A limiting rack (218) is provided at the bottom of the resistance arm (206). The limiting gear (215) meshes with the limiting rack (218). The resistance slide (213) is slidably connected to the resistance arm (206) through the pulley (214) and the limiting gear (215). A resistance slider (216) is slidably mounted on the resistance slide (213).

5. The pedal force testing device for sarcopenia according to claim 4, characterized in that: Friction consumable (217) is detachably mounted above the resistance slider (216).

6. The pedal force testing device for sarcopenia according to claim 5, characterized in that: The lower end of the torque link (204) is rotatably connected to the resistance slider (216).

7. The pedal force testing device for sarcopenia according to claim 6, characterized in that: The counterweight rope (103) is rotatably connected to the adjusting counterweight wheel (207), and the counterweight claw (104) is fixedly connected to the resistance slide (213).

8. The pedal force testing device for sarcopenia according to claim 7, characterized in that: The end of the adjusting screw (210) is provided with an adjusting wheel (211).

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