Intelligent traction rehabilitation equipment for treating limited motion of knee joint

Abstract

The invention discloses intelligent traction rehabilitation equipment for treating limited knee joint movement, which comprises a lower limb far-end support mechanism, a lower limb near-end support mechanism, a base, a traction device and a control system, the traction device comprises a guide frame, a platform plate and a driving mechanism, the guide frame is fixedly mounted on the base, and the platform plate is fixedly mounted on the base; the platform plate is slidably mounted on the guide frame and is in transmission connection with the driving mechanism, and the control system can drive the platform plate to slide back and forth along the guide frame through the driving mechanism; the knee joint rehabilitation device is unique in structure and ingenious in design, provides safe and comfortable knee joint rehabilitation treatment through personalized adjustment and accurate control of the traction force, overcomes the limitation of existing equipment, enhances the rehabilitation effect, simplifies the operation process, and comprehensively improves the treatment experience and efficiency of a patient.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to an intelligent traction rehabilitation device for treating limited knee joint movement. Background Art

[0002] The knee joint is one of the largest and most complex joints in the human body, and it plays a vital role in daily activities. Limited knee joint movement refers to the restriction of the normal flexion and extension function of the knee joint due to various reasons (such as trauma, postoperative recovery, arthritis, etc.). This condition not only affects the patient's walking ability and quality of life, but may also cause problems such as muscle atrophy and joint stiffness; traction therapy is a method of stretching the soft tissue around the knee joint by applying external force, aiming to relieve pain, improve blood circulation, loosen adhesions, and gradually restore the range of motion of the joint. For patients with limited knee joint movement, appropriate traction therapy can effectively prevent or correct joint deformity, promote the rehabilitation process, and improve the ability to take care of themselves.

[0003] Currently, most knee traction rehabilitation equipment on the market relies on fixed brackets and manual adjustment devices. They are not only too heavy and inconvenient to carry and move, but also cannot be accurately adjusted according to individual differences of patients, making it difficult to meet the specific needs of different patients. In addition, manual operation has low control accuracy and is prone to operational errors. The consistency and accuracy of each treatment cannot be guaranteed, which can easily lead to unstable treatment effects and even secondary injuries to patients. Frequent manual intervention is required during use, which increases medical costs and reduces treatment efficiency. Summary of the invention

[0004] In view of the defects and problems of existing knee traction rehabilitation equipment, the present invention provides an intelligent traction rehabilitation equipment for treating limited knee joint movement. The equipment has a unique structure and ingenious design. It aims to provide safe and comfortable knee joint rehabilitation treatment through personalized adjustment and precise control of traction force, overcome the limitations of existing equipment, enhance rehabilitation effects, simplify operating procedures, and comprehensively improve patients' treatment experience and efficiency.

[0005] The solution adopted by the present invention to solve its technical problems is: an intelligent traction rehabilitation device for treating limited knee joint movement, including a lower limb distal support mechanism, a lower limb proximal support mechanism, a base, a traction device and a control system, the traction device includes a guide frame, a platform plate and a driving mechanism, the guide frame is fixedly mounted on the base, the platform plate is slidably mounted on the guide frame and is transmission-connected to the driving mechanism, and the control system can drive the platform plate to slide forward and backward along the guide frame through the driving mechanism; the lower limb distal support mechanism includes a calf support, a foot support, an Allais hinge assembly and a calf support assembly, The foot support is installed at the distal end of the calf support through an Alley hinge assembly; the calf support assembly includes a front calf support rod and a rear latch telescopic rod hingedly installed on the platform board from front to back, the top of the front calf support rod is hinged to the bottom surface of the distal end of the calf support, and the telescopic end of the rear latch telescopic rod is hinged to the bottom surface of the front calf support rod; the proximal support mechanism of the lower limb includes a thigh support and a thigh support assembly, the distal end of the thigh support is installed on the base on the rear side of the traction device through the thigh support assembly, the proximal end of the thigh support is directly hinged to the base, and the elevation angle of the distal end of the thigh support can be adjusted through the thigh support assembly.

[0006] The rear latch telescopic rod comprises an outer rod, an inner slide rod and a latch, the bottom end of the outer rod being hingedly mounted on the base, the top end of the outer rod being axially provided with a receiving groove, the outer ring surface on one side of the top end of the outer rod being radially provided with a through hole connected with the receiving groove, the top end of the inner slide rod being axially slidably mounted in the receiving groove of the outer rod, and the top end of the inner slide rod extending outwardly from the outer rod and being hinged to the bottom surface of the calf support; a plurality of latch holes matching the through holes are evenly spaced axially on the outer ring surface of the inner slide rod close to the through hole, and when the latch hole overlaps with the through hole, the latch can pass through the insertion hole and be inserted into the latch hole.

[0007] The platform plate includes a front slide plate, a rear slide plate and a connecting piece. The front slide plate and the rear slide plate are installed on the guide frame for sliding from front to rear. The front slide plate and the rear slide plate are fixedly connected together by the connecting piece. The front slide plate or the rear slide plate is transmission-connected to the driving mechanism.

[0008] The guide frame comprises a plurality of slide bars arranged in parallel and at intervals, the front and rear ends of the slide bars are fixedly mounted on the base, and the bottom surface of the slide plate is matched with a slide sleeve matching the slide bars.

[0009] The driving mechanism includes an electric push rod arranged along the sliding direction of the platform plate. The electric push rod is fixedly installed in a base on the rear side of the platform plate and is connected to the control system. The telescopic end of the electric push rod is connected to the platform plate and is provided with a force sensor connected to the control system for detecting the thrust value of the electric push rod.

[0010] The base includes a front frame, a rear frame is telescopically mounted on the rear end of the front frame, and a latch assembly is matched with the rear end of the front frame for inserting and fixing the front frame and the rear frame together; the distal support of the lower limb is installed on the front frame through a traction power device, and the proximal support of the lower limb is matched and mounted on the rear frame.

[0011] The Allais hinge assembly includes a screw rod arranged below the calf rest and the foot rest, one end of the screw rod is provided with an adapter seat, the other end of the adapter seat is fixedly connected to the bottom surface of the distal end of the calf rest, a connecting arm is axially slidably mounted on the screw rod, the other end of the connecting arm is fixedly connected to the bottom surface of the foot rest, two Allais gears are slidably mounted on the screw rod between the adapter seat and the connecting arm, the two Allais gears are respectively fixedly connected to the adapter seat and the connecting arm, and the tooth surfaces of the two Allais gears are arranged facing each other, and a through-hole star-shaped handwheel is matchedly mounted on the end of the screw rod away from the adapter seat.

[0012] The thigh support assembly includes a movable support rod, a telescopic rod, a pipe clamp and a quick-press screw. The movable support rod is hingedly mounted on the base, and a sliding groove is axially provided at the top end of the movable support rod. The telescopic rod is matched and inserted into the sliding groove, and the top end of the telescopic rod extends outward from the movable support rod and is hinged to the bottom surface of the distal end of the thigh support; a deformation gap connected to the sliding groove is axially provided on the outer annular surface of the top end of the movable support rod, and the pipe clamp assembly is matched and mounted on the movable support rod at the deformation gap. When the pipe clamp assembly presses the movable support rod, the movable support rod will produce elastic deformation to reduce the deformation gap and clamp the telescopic rod.

[0013] Beneficial effects of the present invention: The intelligent traction rehabilitation device for treating limited knee joint movement provided by the present invention has the following beneficial effects: 1. The intelligent traction rehabilitation device for treating limited knee joint movement of the present invention can be individually adjusted according to the specific conditions of each patient (such as leg length, degree of knee joint bending) through the design of the rear latch telescopic rod and the thigh support component, ensuring that the rehabilitation training is more in line with personal needs.

[0014] 2. The intelligent traction rehabilitation device of the present invention is used to treat limited knee joint movement. The control system is used in combination with the force sensor to accurately monitor and adjust the traction force to avoid excessive stretching or insufficient strength, thereby protecting the patient from secondary injury and improving the safety and effectiveness of treatment.

[0015] 3. The intelligent traction rehabilitation device for treating limited knee joint mobility of the present invention is designed to allow the platform plate to slide forward and backward along the guide frame, and the angle adjustment function provided by the Arri hinge assembly enables the device to adapt to different types of knee joint problems, increasing its application range. The stable and controllable traction movement provided by the electric push rod drive mechanism helps to promote the recovery of muscles around the knee joint, increase joint mobility, and accelerate the rehabilitation process. 4. The present invention is an intelligent traction rehabilitation device for treating limited knee joint movement. The base adopts a design of a front frame and a retractable rear frame, which is convenient for transportation and storage and can adjust the size according to different environments, thereby improving the portability of the device and its adaptability to different space conditions.

[0016] 5. The present invention is an intelligent traction rehabilitation device for treating limited knee joint movement. The control system can not only monitor various parameters in the traction process in real time, but also record and analyze these data to provide important reference information for doctors, helping them to better formulate and adjust treatment plans. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the structure of the traction device of the present invention.

[0019] Figure 3 It is a schematic diagram of the platform plate structure of the present invention.

[0020] Figure 4 It is a schematic diagram of the structure of the rear latch telescopic rod of the present invention.

[0021] Figure 5 It is a schematic diagram of the structure of the thigh support assembly of the present invention.

[0022] Figure 6 It is a schematic diagram of the base structure of the present invention.

[0023] Figure 7 It is a schematic diagram of the structure of the Arri hinge assembly of the present invention.

[0024] Figure 8 It is a schematic diagram of the structure of the outer sleeve rod and the movable support rod of the present invention.

[0025] Fig. 9 It is a schematic diagram of the structure of the alternating pressurizing mechanism of the present invention.

[0026] The numbers in the figure are: 1 is a base, 11 is a front frame, 12 is a rear frame, 13 is a latch seat, 14 is a spring pin, 2 is a traction device, 21 is a guide frame, 211 is a slide bar, 212 is a fixed seat, 22 is a platform plate, 221 is a front slide plate, 222 is a rear slide plate, 223 is a connecting piece, 23 is a driving mechanism, 3 is a calf support, 4 is a foot support, 5 is an Arley hinge assembly, 51 is a screw rod, 52 is an adapter seat, 53 is an Arley gear, 54 is a through-hole star-shaped handwheel, 55 is a connecting arm, 6 is a calf support assembly, 61 is a front calf support rod, 62 is a rear latch extension Retraction rod, 621 is outer outer rod, 6211 is outer outer rod telescopic cylinder, 622 is inner sliding rod, 623 is latch, 7 is thigh support, 8 is thigh support assembly, 81 is movable support rod, 811 is deformation joint, 812 is support telescopic cylinder, 82 is telescopic rod, 83 is pipe clamp assembly, 91 is pressure supply cylinder body, 911 is piston, 912 is drive rod, 92 is power box, 97 is rotary drive assembly, 93 is guide cylinder, 931 is exhaust hole, 94 is pressurized column, 941 is through hole, 942 is air release pipe, 95 is drive shaft, 96 is rotary joint. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and embodiments. Example

[0028] In view of the problems raised in the above background technology, this embodiment provides an intelligent traction rehabilitation device for treating limited knee joint movement, such as Figure 1-7 As shown, it includes a lower limb distal support mechanism, a lower limb proximal support mechanism, a base 1, a traction device 2 and a control system. The traction device 2 includes a guide frame 21, a platform plate 22 and a driving mechanism 23. The guide frame 21 is fixedly mounted on the base 1, and the platform plate 22 is slidably mounted on the guide frame 21 and is in transmission connection with the driving mechanism 23. The control system can drive the platform plate 22 to slide forward and backward along the guide frame 21 through the driving mechanism 23. Specifically: The guide frame 21 includes a plurality of slide bars 211 arranged in parallel and at intervals. In the present embodiment, two slide bars are arranged. The front and rear ends of the slide bars 211 are fixedly mounted on the base 1. The bottom surface of the slide plate is matched with a sliding sleeve matching the slide bar. There are various ways to install the slide bar on the base 1. For example, the front and rear ends of the slide bar are matched with a fixing seat 212, and the fixing seat is fixedly mounted on the base 1 by bolts.

[0029] The driving mechanism 23 includes an electric push rod arranged along the sliding direction of the platform plate 22. The electric push rod is fixedly installed in the base 1 on the rear side of the platform plate 22 and is connected to the control system. The telescopic end of the electric push rod is connected to the platform plate 22 and is provided with a force sensor connected to the control system for detecting the thrust value of the electric push rod, so that the control system can control the traction force of the knee joint through the detected thrust value.

[0030] The lower limb distal support mechanism includes a calf support 3, a foot support 4, an Allais hinge assembly 5 and a calf support assembly 6. The foot support 4 is used to support the patient's foot, and the calf support 3 is used to support the patient's calf. The calf support 3 is also matched with a fixing assembly to ensure that the calf will not slip out or shift during the entire treatment process. There are many types of fixing assemblies, such as Velcro straps, elastic straps or quick release buckles. The foot support 4 is installed at the distal end of the calf support 3 through the Allais hinge assembly 5. The Allais hinge assembly 5 can adjust the angle between the calf support 3 and the foot support 4 to adapt to different patients. Specifically: like Figure 7 As shown, the Allais hinge assembly 5 includes a screw rod 51 arranged below the calf support 3 and the foot support 4, one end of the screw rod 51 is provided with an adapter seat 52, the other end of the adapter seat 52 is fixedly connected to the bottom surface of the distal end of the calf support 3, a connecting arm is axially slidably mounted on the screw rod 51, the other end of the connecting arm 55 is fixedly connected to the bottom surface of the foot support 4, two Allais gears 53 are slidably mounted on the screw rod 51 between the adapter seat 52 and the connecting arm, the two Allais gears 53 are respectively fixedly connected to the adapter seat 52 and the connecting arm, and the tooth surfaces of the two Allais gears 53 are arranged facing each other, and a through-hole star-shaped handwheel 54 is matched and mounted on the end of the screw rod 51 away from the adapter seat 52, and the through-hole star-shaped handwheel 54 is threadedly connected to the screw rod 51, when the through-hole star-shaped handwheel 54 is rotated to drive the connecting arm to press the adapter seat 52 to make the two Allais gears 53 mesh, the angle between the calf support 3 and the foot support 4 is locked.

[0031] The calf support assembly 6 includes a front calf support rod 61 and a rear latch 623 telescopic rod 8262 which are hingedly installed on the platform plate 22 from front to back. The top of the front calf support rod 61 is hinged to the bottom surface of the distal end of the calf support 3, and the telescopic end of the rear latch 623 telescopic rod 8262 is hinged to the bottom surface of the front calf support rod 61. The elevation angle of the proximal end of the calf support 3 can be adjusted by the rear latch 623 telescopic rod 8262. Specifically: The rear latch 623 telescopic rod 8262 includes an outer rod 621, an inner slide rod 622 and a latch 623. The bottom end of the outer rod 621 is hingedly mounted on the base 1. The top end of the outer rod 621 is provided with a receiving groove along the axial direction. The outer ring surface on one side of the top end of the outer rod 621 is provided with a through hole connected to the receiving groove along the radial direction. The top end of the inner slide rod 622 is slidably mounted in the receiving groove of the outer rod 621 along the axial direction, and the top end of the inner slide rod 622 extends outward from the outer rod 621 and is hinged to the bottom surface of the calf support 3; a plurality of latch pin 623 holes matching the through holes are evenly spaced axially on the outer ring surface of the inner slide rod 622 near the through hole. When the latch pin 623 hole overlaps with the through hole, the latch pin 623 can pass through the insertion hole and be inserted into the latch pin 623 hole. The length of the telescopic rod 8262 of the rear latch 623 is adjusted by plugging and pulling out the latch pin 623. When in use, the angle between the calf axis and the horizontal plane can be adjusted according to the patient, thereby meeting the requirements for treating the calf deflection angle.

[0032] Furthermore, the bottom surface of the calf support 3 is matched with an inclination sensor connected to the control system to monitor the angle value between the calf and the horizontal thrust in real time. The control system calculates according to the angle value to ensure the constancy of the traction force in the axial direction of the calf.

[0033] The proximal support mechanism of the lower limb includes a thigh support 7 and a thigh support assembly 8. The thigh support 7 is used to support the thigh, and the thigh support 7 is also matched with a fixing assembly to ensure that the thigh will not slip out or shift during the entire treatment process. There are many types of fixing assemblies, such as: Velcro straps, elastic straps or quick release buckles, etc.

[0034] The distal end of the thigh support 7 is mounted on the base 1 at the rear side of the traction device 2 through the thigh support assembly 8, the proximal end of the thigh support 7 is directly hinged to the base 1, and the elevation angle of the distal end of the thigh support 7 can be adjusted through the thigh support assembly 8, specifically: The thigh support assembly 8 includes a movable support rod 81, a telescopic rod 82, a pipe clamp and a quick-press screw. The movable support rod 81 is hingedly mounted on the base 1. The top end of the movable support rod 81 is axially provided with a slide groove, the telescopic rod 82 is matched and inserted into the slide groove, and the top end of the telescopic rod 82 extends outward from the movable support rod 81 and is hinged to the bottom surface of the distal end of the thigh support 7; the outer annular surface of the top end of the movable support rod 81 is axially provided with a deformation gap 811 connected to the slide groove, and the pipe clamp assembly 83 is matched and mounted on the movable support rod 81 at the deformation gap. When the pipe clamp assembly 83 presses the movable support rod 81, the movable support rod 81 will produce elastic deformation to reduce the deformation gap and clamp the telescopic rod 82.

[0035] When in use, first adjust the angles of the calf support 3 and the thigh support 7 through the calf support component 6 and the thigh support component 8 according to factors such as the patient's height and leg length, and then use the Alley hinge component 5 to adjust the angle between the calf support 3 and the foot support 4 to ensure that the lower limb distal support mechanism and the lower limb proximal support mechanism can comfortably support the patient's lower limbs and allow a natural bending angle; then confirm that all fixing components (such as Velcro straps) have been correctly installed and can firmly fix the patient's legs to prevent sliding or displacement during treatment; then start the control system and execute the system self-test program to ensure that all hardware and sensors are working properly, then input the preset treatment parameters through the user interface, such as traction force, duration, frequency, etc., and then start traction. The control system will control the electric push rod to push and pull the lower limb distal support mechanism according to the treatment parameters to perform knee joint traction rehabilitation treatment. Example

[0036] The difference between Example 2 and Example 1 is that Figure 3As shown, the platform plate 22 includes a front skateboard 221, a rear skateboard 222 and a connecting piece 223. The front skateboard and the rear skateboard are installed on the guide frame 21 with an interval from front to rear and slidingly mounted. The front skateboard and the rear skateboard are fixedly connected together by the connecting piece. The front skateboard or the rear skateboard is connected to the driving mechanism 23 for transmission. Example

[0037] The difference between Example 3 and Example 2 is that the base 1 includes a front frame 11, a rear frame 12 is telescopically mounted at the rear end of the front frame 11, and a latch 623 assembly is matched at the rear end of the front frame 11 for inserting and fixing the front frame 11 and the rear frame 12 together. Specifically: The front frame 11 and the rear clamp are both U-shaped structural frames, and the two are arranged facing each other. The two parallel rod sections of the front frame 11 are provided with rod holes matching the rear frame 12, and the two parallel rod sections of the rear frame 12 are respectively matched and inserted into the rod holes of the two parallel rod sections of the front frame 11, and can slide back and forth along the rod holes; the pin 623 assembly includes a pin seat 13 fixedly installed on the parallel rod sections of the front frame 11, and a spring pin 14 is matched and installed on the pin seat 13. The parallel rod sections of the rear clamp are provided with a socket matching the spring pin 14, and the spring pin 14 will be inserted into the corresponding socket in a natural state, thereby fixing the length of the base 1; the lower limb distal support is installed on the front frame 11 through a traction power device, and the lower limb proximal support is matched and installed on the rear frame 12. When in use, the base 1 can be adjusted according to the patient's height to control the distance between the lower limb distal support mechanism and the lower limb proximal support mechanism. Example

[0038] The difference between Example 4 and Example 3 is that Figure 8 As shown, an outer rod telescopic cylinder 6211 is coaxially provided at the bottom end of the outer rod 621, and is hinged to the base 1 through the outer rod telescopic cylinder 6211, specifically: the telescopic end of the outer rod telescopic cylinder 6211 is fixedly connected to the bottom end of the outer rod 621, and the bottom end of the telescopic end of the outer rod telescopic cylinder 6211 is hingedly mounted on the base 1; a supporting telescopic cylinder 812 is coaxially provided at the bottom end of the movable support rod 81, and is hinged to the base 1 through the supporting telescopic cylinder 812, specifically: the telescopic end of the supporting telescopic cylinder 812 is fixedly connected to the bottom end of the movable support rod 81, and the bottom end of the telescopic end of the supporting telescopic cylinder 812 is hingedly mounted on the base 1.

[0039] The outer rod telescopic cylinder 6211 and the support telescopic cylinder 812 are both existing single-acting cylinders. The return spring in the single-acting cylinder will drive the cylinder piston to move so that its piston rod includes a retracted state under a natural state. When air is injected into the single-acting cylinder, the cylinder piston moves under the action of air pressure to drive the piston rod to extend outward; the air holes of the outer rod telescopic cylinder 6211 and the air holes of the support telescopic cylinder 812 are both connected with an alternating pressurizing mechanism, and the alternating pressurizing mechanism is connected to the control system. During traction therapy, the control system will control the alternating pressurizing mechanism to alternately fill gas into the outer rod telescopic cylinder 6211 and the support telescopic cylinder 812, so that they are alternately extended and retracted, thereby simulating the knee joint bending movement during traction therapy, thereby further improving the traction therapy effect.

[0040] There are many types of alternating pressurizing mechanisms, for example: the alternating pressurizing mechanism includes a pressure supply cylinder body 91, a piston is matched and installed in the piston cavity of the pressure supply cylinder body, and the piston cavities on both sides of the piston are respectively connected to the air holes of the outer rod telescopic cylinder 6211 and the air holes of the support telescopic cylinder 812; a drive rod 912 is matched and installed at one end of the piston 911, and the drive rod extends outward from the pressure supply cylinder body and is connected to a crank-connecting rod drive assembly, and the crank-connecting rod drive assembly is connected to a control system. The control system can drive the drive rod to drive each piston to experience the reciprocating movement of the inner wall of the piston cavity through the crank-connecting rod drive assembly, thereby alternately filling gas into the outer rod telescopic cylinder 6211 and the support telescopic cylinder 812. Example

[0041] The difference between Example 5 and Example 4 is that Fig. 9 As shown, the structure of the alternating pressurization mechanism is different. The alternating pressurization mechanism of this embodiment includes a power box 92, in which a rotation drive assembly 97 and a pressure supply assembly are installed. The rotation drive assembly 93 and the pressure supply assembly are both connected to the control system; the power box 92 is installed on a base or is independently arranged, and a guide cylinder 93 is vertically installed on the top of the power box 92. The outer ring surfaces of the left and right ends of the guide cylinder 93 are symmetrically provided with exhaust holes 931 connected to the interior, and the outer openings of the two exhaust holes are respectively connected to the air holes of the outer rod telescopic cylinder 6211 and the supporting telescopic air hole. The air holes of the cylinder 812 are connected; a charging column 94 with an internal cavity is rotatably installed in the guide cylinder 93, and the outer ring surface of the charging column blocks the inner openings of the two exhaust holes; through holes 941 connected to the internal cavity are symmetrically provided on the left and right end surfaces of the stamping column, and the two through holes are matched with the two exhaust holes. When the stamping column rotates, the through holes will overlap and connect with the two exhaust holes in turn; a vent pipe 942 is provided in the charging column, one end of the vent pipe is connected to the inner empty opening of any one of the two through holes on the stamping column, and the other end of the vent pipe extends upward out of the stamping column.

[0042] A driving shaft 95 is coaxially installed on the bottom surface of the pressurizing column 94, and the driving shaft is rotatably installed on the power box. An exhaust passage connected to the cavity of the stamping column is matched inside the driving shaft. The driving column extends downward into the power box and is connected to the rotating driving assembly. The control system can drive the stamping column to rotate through the rotating driving assembly, so as to control the air holes of the telescopic cylinder of the outer sleeve rod and the air holes of the supporting telescopic cylinder 812 to be connected to the internal cavity of the stamping column in sequence; a rotating joint 96 is matched with the bottom end of the driving column, and the stator end hole of the rotating joint is connected to the exhaust passage inside the driving column, and the rotor end hole of the rotating joint is connected to the exhaust end of the pressure supply assembly. The pressure supply assembly includes an air pump connected to the control system, and the exhaust end of the air pump is matched with an air pipe, and the other end of the air pipe is connected to the rotor end hole of the rotating joint; the control system can continuously inject high-pressure air into the rotating stamping column by controlling the air pump, so that when the air holes of the telescopic cylinder of the outer sleeve rod and the air holes of the supporting telescopic cylinder 812 are connected to the internal cavity of the stamping column in sequence When connected, high-pressure gas will enter the corresponding telescopic cylinder, thereby driving the telescopic end of the telescopic cylinder to extend outward, and because the two exhaust holes and the two through holes are symmetrically arranged, when the air hole of any one of the two telescopic cylinders is connected to the internal cavity of the stamping column for injection and extension, the air hole of the other telescopic cylinder will be connected to the pressure relief pipe, so that the telescopic cylinder automatically releases pressure, thereby automatically retracting the telescopic end; when the traction rehabilitation equipment provided in this embodiment is used, the working parameters of the rotary drive assembly and the air pump can be set according to the actual situation of the patient, so as to control the telescopic degree of the outer sleeve telescopic cylinder and the supporting telescopic cylinder and the alternating telescopic interval time, so as to ensure the safety and effectiveness of the treatment, and the control system controls the time when the telescopic cylinder air hole is connected to the internal cavity of the stamping column through the rotary drive mechanism, so as to control the extension degree of the outer sleeve telescopic cylinder and the supporting telescopic cylinder 812 respectively, so that the equipment can provide the most suitable traction force and range of motion according to the specific situation of each patient.

[0043] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. An intelligent traction rehabilitation device for treating limited knee joint movement, characterized in that: The invention comprises a distal support mechanism for lower limbs, a proximal support mechanism for lower limbs, a base, a traction device and a control system, wherein the traction device comprises a guide frame, a platform plate and a driving mechanism, wherein the guide frame is fixedly mounted on the base, the platform plate is slidably mounted on the guide frame and is transmission-connected with the driving mechanism, and the control system can drive the platform plate to slide forward and backward along the guide frame through the driving mechanism; the distal support mechanism for lower limbs comprises a calf support, a foot support, an Allais hinge assembly and a calf support assembly, wherein the foot support is mounted on the distal end of the calf support through the Allais hinge assembly; the calf support assembly comprises a front calf support rod and a rear latch telescopic rod hingedly mounted on the platform plate at intervals from front to back, the top end of the front calf support rod is hingedly connected to the bottom surface of the distal end of the calf support, and the telescopic end of the rear latch telescopic rod is hingedly connected to the bottom surface of the front calf support rod; the proximal support mechanism for lower limbs comprises a thigh support and a thigh support assembly, wherein the distal end of the thigh support is mounted on the base on the rear side of the traction device through the thigh support assembly, the proximal end of the thigh support is directly hingedly connected to the base, and the elevation angle of the distal end of the thigh support can be adjusted through the thigh support assembly.

2. The intelligent traction rehabilitation device for treating limited knee joint movement according to claim 1, characterized in that: The rear latch telescopic rod comprises an outer rod, an inner slide rod and a latch, the bottom end of the outer rod being hingedly mounted on the base, the top end of the outer rod being axially provided with a receiving groove, the outer ring surface on one side of the top end of the outer rod being radially provided with a through hole connected with the receiving groove, the top end of the inner slide rod being axially slidably mounted in the receiving groove of the outer rod, and the top end of the inner slide rod extending outwardly from the outer rod and being hinged to the bottom surface of the calf support; a plurality of latch holes matching the through holes are evenly spaced axially on the outer ring surface of the inner slide rod close to the through hole, and when the latch hole overlaps with the through hole, the latch can pass through the insertion hole and be inserted into the latch hole.

3. The intelligent traction rehabilitation device for treating limited knee joint movement according to claim 1, characterized in that: The platform plate includes a front slide plate, a rear slide plate and a connecting piece. The front slide plate and the rear slide plate are installed on the guide frame for sliding from front to rear. The front slide plate and the rear slide plate are fixedly connected together by the connecting piece. The front slide plate or the rear slide plate is transmission-connected to the driving mechanism.

4. The intelligent traction rehabilitation device for treating limited knee joint movement according to claim 3, characterized in that: The guide frame comprises a plurality of slide bars which are arranged in parallel and at intervals. The front and rear ends of the slide bars are fixedly mounted on the base. The bottom surface of the slide plate is matched with a slide sleeve which matches the slide bars.

5. The intelligent traction rehabilitation device for treating limited knee joint movement according to claim 1, characterized in that: The driving mechanism includes an electric push rod arranged along the sliding direction of the platform plate. The electric push rod is fixedly installed in a base on the rear side of the platform plate and is connected to the control system. The telescopic end of the electric push rod is connected to the platform plate and is provided with a force sensor connected to the control system for detecting the thrust value of the electric push rod.

6. The intelligent traction rehabilitation device for treating limited knee joint movement according to claim 1, characterized in that: The base includes a front frame, a rear frame is telescopically mounted on the rear end of the front frame, and a latch assembly is matched with the rear end of the front frame for inserting and fixing the front frame and the rear frame together; the distal support of the lower limb is installed on the front frame through a traction power device, and the proximal support of the lower limb is matched and mounted on the rear frame.

7. The intelligent traction rehabilitation device for treating limited knee joint movement according to claim 1, characterized in that: The Allais hinge assembly includes a screw rod arranged below the calf rest and the foot rest, one end of the screw rod is provided with an adapter seat, the other end of the adapter seat is fixedly connected to the bottom surface of the distal end of the calf rest, a connecting arm is axially slidably mounted on the screw rod, the other end of the connecting arm is fixedly connected to the bottom surface of the foot rest, two Allais gears are slidably mounted on the screw rod between the adapter seat and the connecting arm, the two Allais gears are respectively fixedly connected to the adapter seat and the connecting arm, and the tooth surfaces of the two Allais gears are arranged facing each other, and a through-hole star-shaped handwheel is matchedly mounted on the end of the screw rod away from the adapter seat.

8. The intelligent traction rehabilitation device for treating limited knee joint movement according to claim 1, characterized in that: The thigh support assembly includes a movable support rod, a telescopic rod, a pipe clamp and a quick-press screw. The movable support rod is hingedly mounted on the base. The top end of the movable support rod is axially provided with a slide groove. The telescopic rod is matched and inserted into the slide groove, and the top end of the telescopic rod extends outward from the movable support rod and is hinged to the bottom surface of the distal end of the thigh support; the outer annular surface of the top end of the movable support rod is axially provided with a deformation gap connected with the slide groove, and the pipe clamp assembly is matched and mounted on the movable support rod at the deformation gap.

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