Array Pneumatic Contact Lower Limb Motor Function Identification and Evaluation Device

Abstract

The present invention relates to the technical field of rehabilitation medicine, and discloses an array pneumatic contact lower limb motor function identification and evaluation device, including a base. An adjustable seat is arranged on the top of the base. A fixed seat is fixedly connected to the top of the base. An auxiliary mechanism is arranged on the top of the fixed seat. An identification mechanism is arranged on the top of the base. The identification mechanism includes an installation box. The bottoms of the two installation boxes are fixedly connected to the top of the base. A follower assembly is arranged inside the installation box. The other end of the follower assembly is rotatably connected to a fixing ring. Magic tapes are arranged at both ends of the fixing ring. A plurality of air cylinders are fixedly connected inside the fixing ring. In the present invention, the detection accuracy is improved through the array pneumatic contact design, avoiding errors caused by loose contacts or missed detections, and supporting the formulation of personalized rehabilitation programs, such as targeted training for patients with muscle strength asymmetry.

Description

Technical Field

[0001] The present invention relates to the technical field of rehabilitation medicine, and particularly to an array pneumatic contact lower limb movement function identification and evaluation device. Background Art

[0002] A lower limb movement function identification and evaluation device is a medical or rehabilitation device used to detect and quantify lower limb movement ability, usually by sensors, motion capture systems or mechanical analysis to evaluate indicators such as muscle strength, joint range of motion, balance ability, etc. It is widely used in rehabilitation medicine, sports science and the diagnosis and treatment of neurological diseases to help evaluate the degree of lower limb dysfunction in patients (such as stroke, spinal cord injury or orthopedic postoperative recovery). This device can provide objective data support for rehabilitation program formulation, treatment effect tracking and improvement of movement ability.

[0003] In the prior art, traditional lower limb movement function identification and evaluation devices often rely on contacts at fixed positions to collect data. This results in the fact that when the leg muscles contract or relax, due to the continuous change of the contour, the contacts may not always fit tightly, thus generating data errors.

[0004] Therefore, in view of the above problems, an array pneumatic contact lower limb movement function identification and evaluation device is proposed to solve the above problems. Summary of the Invention

[0005] To make up for the above deficiencies, the present invention provides an array pneumatic contact lower limb movement function identification and evaluation device, aiming to improve the problem that some devices in the prior art rely on contacts at fixed positions to collect data and are prone to errors.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] An array pneumatic contact lower limb movement function identification and evaluation device, including a base, on the top of which an adjustable seat is provided, a fixed seat is fixedly connected to the top of the base, an auxiliary mechanism is provided on the top of the fixed seat, and an identification mechanism is provided on the top of the base;

[0008] The identification mechanism includes an installation box, the bottoms of the two installation boxes are fixedly connected to the top of the base, a follow-up component is arranged inside the installation box, the other end of the follow-up component is rotatably connected to a fixed ring, magic tapes are arranged at both ends of the fixed ring, a plurality of air cylinders are fixedly connected inside the fixed ring, a spherical contact is slidably connected inside the air cylinder, the other ends of the plurality of air cylinders are fixedly connected to a transition box, two communication pipes are arranged on each of the adjacent sides of the transition box, a manifold is fixedly connected to the top of the upper transition box, the other end of the manifold is fixedly connected to a gas storage tank, and an evaluator is arranged on the top of the gas storage tank;

[0009] As a further description of the above technical solution:

[0010] The follower assembly includes two first limiting rods, both ends of the two limiting rods are fixedly connected to the inside of the mounting box, a longitudinal moving platform is slidably connected to the outside of the two limiting rods, and two first springs are sleeved on the outside of the limiting rods;

[0011] As a further description of the above technical solution:

[0012] A second limiting rod is fixedly connected to the inside of the longitudinal moving platform, a second spring is sleeved on the outside of the second limiting rod, a transverse moving platform is slidably connected to the outside of the second limiting rod, and the outside of the fixed ring is rotatably connected to the other end of the transverse moving platform;

[0013] As a further description of the above technical solution:

[0014] The auxiliary mechanism includes two mounting brackets, the bottom of the mounting brackets is fixedly connected to the top of the fixed seat, a bottom plate is fixedly connected to the bottom of the mounting brackets, one end of the bottom plate is rotatably connected to a rotating plate, two slide rails are fixedly connected to the top of the rotating plate, a sliding platform is slidably connected to the outside of the two slide rails, a fixed shaft is fixedly connected to the top of the sliding platform, and a foot pedal is rotatably connected to both ends of the fixed shaft;

[0015] As a further description of the above technical solution:

[0016] A rotating frame is arranged on the adjacent side of the mounting bracket, an electric push rod is rotatably connected to the middle of the rotating frame, and the output end of the electric push rod is fixedly connected to the bottom of the sliding platform;

[0017] As a further description of the above technical solution:

[0018] A cylinder is arranged on the top of the fixed seat, the output end of the cylinder is rotatably connected to a sliding shaft, and both ends of the sliding shaft are slidably connected to the bottom of the rotating plate;

[0019] As a further description of the above technical solution:

[0020] The adjacent ends of the first springs are fixedly connected to the downward two sides of the longitudinal moving platform, and the remote ends of the first springs are fixedly connected to the inside of the mounting box;

[0021] As a further description of the above technical solution:

[0022] The adjacent ends of the second springs are fixedly connected to the left and right sides of the transverse moving platform, and the remote ends of the second springs are fixedly connected to the inside of the longitudinal moving platform.

[0023] The present invention has the following beneficial effects:

[0024] 1. In the present invention, through the air circuit system of the air storage tank, the manifold, the transition box and the air cylinder, the air pressure is continuously adjusted to keep the spherical contact always closely attached to the leg surface. Even if the leg movement causes contour changes (such as muscle contraction / relaxation), stable contact can be maintained. A plurality of pneumatic contacts are arranged in an array, covering the main muscle groups of the lower limbs (such as the quadriceps femoris and the gastrocnemius), collecting pressure distribution data in real time, and combining with the displacement signal of the follow-up component to comprehensively analyze the motor function. Thus, the detection accuracy is improved through the array design of the pneumatic contacts, avoiding errors caused by contact looseness or missed detection, and supporting the formulation of personalized rehabilitation programs, such as targeted training for patients with muscle strength asymmetry.

[0025] 2. In the present invention, the dynamic change of the ground reaction force during human walking is simulated through the thrust of the electric push rod and the elastic response of Spring 1 and Spring 2, making the evaluation process closer to the real physiological state. And through the combination of Spring 1 and Spring 2, the fixed ring can dynamically adjust the pressure in the vertical and horizontal directions with the movement of the patient's leg, avoiding local compression or strain caused by rigid fixation, thereby improving the detection safety and avoiding secondary injury caused by excessive external force. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional schematic diagram of the array pneumatic contact lower limb motor function identification and evaluation device proposed by the present invention;

[0027] Figure 2 is a structural plan schematic diagram of the array pneumatic contact lower limb motor function identification and evaluation device proposed by the present invention;

[0028] Figure 3 is a structural schematic diagram of the auxiliary mechanism of the array pneumatic contact lower limb motor function identification and evaluation device proposed by the present invention;

[0029] Figure 4 is a structural schematic diagram of the sliding table of the array pneumatic contact lower limb motor function identification and evaluation device proposed by the present invention;

[0030] Figure 5 is a structural schematic diagram of the sliding shaft of the array pneumatic contact lower limb motor function identification and evaluation device proposed by the present invention;

[0031] Figure 6 is a structural schematic diagram of the identification mechanism of the array pneumatic contact lower limb motor function identification and evaluation device proposed by the present invention;

[0032] Figure 7 is a structural schematic diagram of the lateral moving table of the array pneumatic contact lower limb motor function identification and evaluation device proposed by the present invention;

[0033] Figure 8Schematic diagram of the structure of the fixing ring of the array pneumatic contact lower limb movement function identification and evaluation device proposed by the present invention.

[0034] Legend:

[0035] 1. Base; 2. Adjustable seat; 3. Fixed seat; 4. Auxiliary mechanism; 401. Mounting frame; 402. Base plate; 403. Rotating plate; 404. Slide rail; 405. Sliding table; 406. Fixed shaft; 407. Footrest; 408. Rotating frame; 409. Electric push rod; 410. Cylinder; 411. Sliding shaft; 5. Identification mechanism; 501. Installation box; 502. First limiting rod; 503. First spring; 504. Longitudinal moving table; 505. Second limiting rod; 506. Second spring; 507. Transverse moving table; 508. Fixing ring; 509. Magic tape; 510. Spherical contact; 511. Air cylinder; 512. Transition box; 513. Connecting pipe; 514. Manifold; 515. Gas storage tank; 516. Evaluator. Specific implementation mode

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Refer to [[ID=⑧]]Figure 1 And [[ID=⑨]]Figure 2 As shown in, an embodiment provided by the present invention: an array pneumatic contact lower limb movement function identification and evaluation device, including a base 1. The base 1 serves as a support platform for the overall device, providing a stable installation foundation for other functional components to ensure that the device does not shake during the evaluation process. An adjustable seat 2 is provided on the top of the base 1. By adjusting the height and angle of the adjustable seat 2, the height and sitting posture requirements of the patient (such as the hip flexion angle) can be adapted, enabling the patient's lower limbs to stretch naturally and avoiding detection errors caused by improper postures. A fixed seat 3 is fixedly connected to the top of the base 1. An auxiliary mechanism 4 is provided on the top of the fixed seat 3. The auxiliary mechanism 4 is used to simulate the movement state of the lower limbs, enabling the patient's legs to complete flexion and extension movements, thereby reproducing dynamic scenarios such as walking and providing a real mechanical environment for function evaluation. An identification mechanism 5 is provided on the top of the base 1;

[0038] Refer to [[ID=⑩]]Figures 6 to 8, the identification agency 5 includes an installation box 501. The bottoms of two installation boxes 501 are fixedly connected to the top of the base 1. The closed structure of the installation box 501 can protect the internal spring and limit rod from external interference, while restricting the stroke of the moving platform and preventing overload. A follower assembly is arranged inside the installation box 501. The follower assembly serves as a guiding and buffering unit for the movement of the fixed ring 508, realizing the multi-degree-of-freedom following of the fixed ring 508 under the movement state of the patient's leg. The other end of the follower assembly is rotatably connected to a fixed ring 508. Magic tapes 509 are arranged at both ends of the fixed ring 508. The fixed ring 508 is quickly strapped to the leg through the magic tapes 509 to adapt to different leg circumferences. A plurality of air cylinders 511 are fixedly connected inside the fixed ring 508. A spherical contact 510 is slidably connected inside the air cylinder 511. Driven by air pressure, the spherical contact 510 adaptively fits the surface contour of the leg and detects the change of contact pressure in real time. Its array distribution can cover multiple muscle groups in the lower limbs (such as the quadriceps femoris and gastrocnemius), and comprehensively evaluate the movement coordination through multi-point data. The other ends of a plurality of air cylinders 511 are fixedly connected to a transition box 512. Two communication pipes 513 are arranged on the adjacent sides of the transition box 512. A manifold 514 is fixedly connected to the top of the top transition box 512. The other end of the manifold 514 is fixedly connected to an air storage tank 515. A stable air pressure source is provided through the cooperation of the air storage tank 515, the manifold 514, the transition box 512 and the communication pipes 513 to ensure that the pressure in the air cylinders 511 is consistent and avoid the failure of the contact to fit due to air pressure fluctuation. An evaluator 516 is arranged on the top of the air storage tank 515.

[0039] The follower assembly includes two first limit rods 502. The two ends of the two limit rods are fixedly connected to the inside of the installation box 501. A longitudinal moving platform 504 is slidably connected to the outer sides of the two limit rods. Two first springs 503 are sleeved on the outer sides of the limit rods. The adjacent ends of the first springs 503 are fixedly connected to the downward sides of the longitudinal moving platform 504, and the opposite ends of the first springs 503 are fixedly connected to the inside of the installation box 501. A second limit rod 505 is fixedly connected to the inside of the longitudinal moving platform 504. The first limit rod 502 and the second limit rod 505 respectively restrict the strokes of the longitudinal and transverse moving platforms 507, prevent the springs from being over-compressed or the rebound from getting out of control, and ensure that the movement trajectory is controllable. A second spring 506 is sleeved on the outer side of the second limit rod. The adjacent ends of the second spring 506 are fixedly connected to the left and right sides of the transverse moving platform 507, and the opposite ends of the second spring 506 are fixedly connected to the inside of the longitudinal moving platform 504. The impact force during leg movement is buffered through the elastic deformation of the first spring 503 and the second spring 506. Its non-linear stiffness characteristic can simulate the ground reaction force in actual walking, making the evaluation closer to the real physiological state. The pre-tightening forces of the first spring 503 and the second spring 506 are adjustable to adapt to the muscle strength levels of different patients. A transverse moving platform 507 is slidably connected to the outer side of the second limit rod 505. The outer side of the fixed ring 508 is rotatably connected to the other end of the transverse moving platform 507.

[0040] Reference [[ID=⑪]]Figures 3 to 5 , the auxiliary mechanism 4 includes two mounting brackets 401. The bottom of the mounting bracket 401 is fixedly connected to the top of the fixed seat 3. The bottom of the mounting bracket 401 is fixedly connected with a bottom plate 402. One end of the bottom plate 402 is rotatably connected with a rotating plate 403. The top of the rotating plate 403 is fixedly connected with two slide rails 404. The outer sides of the two slide rails 404 are slidably connected with a sliding table 405. The top of the sliding table 405 is fixedly connected with a fixed shaft 406. Both ends of the fixed shaft 406 are rotatably connected with a footrest 407. The footrest 407 is used to provide a foot support surface, and its rotatable connection design allows the natural movement of the ankle joint.

[0041] On the adjacent sides of the mounting bracket 401, there is a rotating bracket 408. The middle of the rotating bracket 408 is rotatably connected with an electric push rod 409. The output end of the electric push rod 409 is fixedly connected to the bottom of the sliding table 405. By the linear output of the electric push rod 409, the sliding table 405 is driven to move along the slide rail 404. The thrust is transmitted to the footrest 407 through the fixed shaft 406, driving the leg to complete the flexion-extension cycle. On the top of the fixed seat 3, there is a cylinder 410. The output end of the cylinder 410 is rotatably connected with a sliding shaft 411. Both ends of the sliding shaft 411 are slidably connected to the bottom of the rotating plate 403. By the cylinder 410 pushing the rotating plate 403 to rotate around the hinge point of the bottom plate 402, the initial angle of the footrest 407 is adjusted to make the lower limb of the patient in the extended position required for detection.

[0042] Working principle: When in use, the patient sits on the adjustable seat 2. By adjusting the height and angle of the seat, then turning on the cylinder 410, the cylinder 410 pushes the sliding shaft 411 to move upward, and makes the sliding shaft 411 slide at the bottom of the rotating plate 403, thereby driving the rotating plate 403 to rotate along one end of the bottom plate 402, so as to adjust the placement angle of the patient's leg, make the patient's sole steadily placed on the footrest 407, and make the patient's leg keep in a straight state. Then, open the fixing ring 508 through the magic tape 509, put the fixing ring 508 on the patient's leg, so that the detection part of the patient is covered by the fixing ring 508.

[0043] Turn on the electric push rod 409. The operation of the electric push rod 409 drives the movement of the sliding table 405. Through the transmission of the fixed shaft 406, the acting force is transmitted to the patient's leg, causing the patient's leg to bend, thereby simulating normal movement postures such as walking of the patient. During the bending process of the patient's leg, the fixed ring 508 rotates with the movement of the leg and drives the transverse moving table 507 to move horizontally on the second limiting rod 505, thereby compressing the second spring 506. At the same time, the force received by the fixed ring 508 in the vertical direction drives the longitudinal moving table 504 to move on the first limiting rod 502 inside the installation box 501, thereby compressing the first spring 503. Through the reverse elastic forces of the first spring 503 and the second spring 506, the force on the patient's leg will not be too large to cause injury.

[0044] And during the bending process of the patient's leg, gas is injected from the gas storage tank 515 into the manifold 514. The gas enters the air cylinder 511 through the transition box 512, so as to ensure that the spherical contact 510 can always fit the surface of the patient's leg. Then, the evaluation instrument 516 receives the pressure signal of the pneumatic contact and the displacement data of the follow-up component, analyzes the lower limb movement trajectory, muscle force distribution and joint range of motion through algorithms, and generates a quantitative evaluation report.

[0045] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Array pneumatic contact lower limb motor function identification and evaluation device, including a base (1), characterized in that: The top of the base (1) is provided with an adjustable seat (2). The top of the base (1) is fixedly connected with a fixed seat (3). The top of the fixed seat (3) is provided with an auxiliary mechanism (4). The top of the base (1) is provided with an identification mechanism (5). The identification mechanism (5) includes an installation box (501). The bottoms of the two installation boxes (501) are fixedly connected to the top of the base (1). A follower assembly is arranged inside the installation box (501). The other end of the follower assembly is rotatably connected with a fixing ring (508). Magic tapes (509) are arranged at both ends of the fixing ring (508). A plurality of air cylinders (511) are fixedly connected inside the fixing ring (508). A spherical contact (510) is slidably connected inside the air cylinder (511). The other ends of the plurality of air cylinders (511) are fixedly connected with a transition box (512). Two communication pipes (513) are arranged on the adjacent sides of the transition box (512). The top of the transition box (512) located above the fixing ring (508) is fixedly connected with a manifold pipe (514). The other end of the manifold pipe (514) is fixedly connected with an air storage tank (515). An evaluator (516) is arranged on the top of the air storage tank (515). Thus, during the bending process of the patient's leg, gas is injected from the air storage tank (515) into the manifold pipe (514). The gas enters the air cylinder (511) through the transition box (512), so as to ensure that the spherical contact (510) can always fit the surface of the patient's leg. Then, the evaluator (516) receives the pressure signal of the pneumatic contact and the displacement data of the follower assembly, analyzes the lower limb movement trajectory, muscle force distribution and joint range of motion through algorithms, and generates a quantitative evaluation report.

2. The array pneumatic contact lower limb motor function identification and evaluation device according to claim 1, wherein: The follower assembly includes two first limiting rods (502). The two ends of the two limiting rods are fixedly connected to the inside of the installation box (501). A longitudinal moving platform (504) is slidably connected to the outside of the two first limiting rods (502). Two first springs (503) are sleeved on the outside of the first limiting rods (502).

3. The array pneumatic contact lower limb motor function identification and evaluation device according to claim 2, characterized in that: A second limiting rod (505) is fixedly connected to the inside of the longitudinal moving platform (504). A second spring (506) is sleeved on the outside of the second limiting rod (505). A transverse moving platform (507) is slidably connected to the outside of the second limiting rod (505). The outside of the fixing ring (508) is rotatably connected to the other end of the transverse moving platform (507).

4. The array pneumatic contact lower limb movement function identification and evaluation device according to claim 1, characterized in that: The auxiliary mechanism (4) includes two mounting frames (401). The bottoms of the mounting frames (401) are fixedly connected to the top of the fixed seat (3). The bottom of the mounting frame (401) is fixedly connected with a bottom plate (402). One end of the bottom plate (402) is rotatably connected with a rotating plate (403). Two slide rails (404) are fixedly connected to the top of the rotating plate (403). A sliding platform (405) is slidably connected to the outside of the two slide rails (404). A fixed shaft (406) is fixedly connected to the top of the sliding platform (405). The two ends of the fixed shaft (406) are rotatably connected with a footrest (407).

5. The array pneumatic contact lower limb motor function identification and evaluation device according to claim 4, characterized in that: A rotating frame (408) is provided on the adjacent side of the mounting frame (401). A telescopic electric cylinder (409) is rotatably connected to the middle of the rotating frame (408), and the output end of the telescopic electric cylinder (409) is fixedly connected to the bottom of the sliding table (405).

6. The array pneumatic contact lower limb motor function identification and evaluation device according to claim 4, characterized in that: A cylinder (410) is provided on the top of the fixed seat (3). A sliding shaft (411) is rotatably connected to the output end of the cylinder (410), and both ends of the sliding shaft (411) are slidably connected to the bottom of the rotating plate (403).

7. The array pneumatic contact lower limb motor function identification and evaluation device according to claim 2, characterized in that: One end of each of the first springs (503) is fixedly connected to the lower sides of the longitudinal moving table (504), and the other ends of the first springs (503) are fixedly connected to the inside of the mounting box (501).

8. The array pneumatic contact lower limb motor function identification and evaluation device according to claim 3, characterized in that: One end of each of the second springs (506) is fixedly connected to the left and right sides of the transverse moving table (507), and the other ends of the second springs (506) are fixedly connected to the inside of the longitudinal moving table (504).

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