Portable dynamic knee traction device

Abstract

The present invention discloses a portable dynamic traction device for knee joint, comprising a box, a traction device and an intelligent control system; the box is trapezoidal in side view, and is composed of two nestable front and rear halves, which support the patient's lower limbs and make the knee joint in a semi-flexed position; the main components of the traction device are installed inside the box, and the intelligent control system presets the traction force, force floating range, traction time default values ​​and user setting range of each traction mode, and the dynamic traction mode with continuous changes of tension and relaxation within the set floating range around the preset traction force can significantly improve the safety, comfort and treatment effect of traction; the traction device is small in size, highly intelligent, and easy to operate, and can be placed on a bed for use by medical staff or family members, and is suitable for people with knee joint diseases who are suitable for traction treatment.

Description

Technical Field

[0001] The invention relates to an intelligently controlled dynamic traction therapeutic device for treating knee joint diseases such as knee osteoarthritis. Background Art

[0002] Knee osteoarthritis (OA), rheumatoid knee arthritis, gouty knee arthritis, etc. are the most common knee joint diseases in clinical practice. According to statistics, the incidence rate in people over 50 years old is as high as over 80%. The damage to the intra-articular cartilage and subchondral bone, narrowing of the joint space, and bone hyperplasia caused by them are one of the main diseases that lead to motor disability in the middle-aged and elderly people, cause economic losses and affect social development. At present, there is no radical treatment for this type of knee joint disease. The treatment is mainly through non-drug treatment, drug treatment, surgical treatment, joint replacement, gene and biological treatment to relieve pain and improve joint function. Traction therapy has been paid more and more attention and application demand by doctors in clinical practice because it can increase the joint space, improve the lymphatic circulation of articular cartilage, meniscus and intra-articular ligaments, increase the blood supply to the tissues around the joints, and promote the absorption of joint effusion and the secretion of joint fluid.

[0003] Through market research and online searches, it was found that most of the traction devices currently available for knee joints are fixation and traction devices used for fracture injuries and postoperative rehabilitation. No portable medical devices specifically for arthritic lesions of the knee joint have been found. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a traction device that can be used for degenerative inflammatory lesions of the knee joint, so that its structure adapts to the physiological characteristics of the knee joint, and its function is conducive to the rehabilitation of the lesion, so that when the knee joint is in semi-flexion and the anterior and posterior cruciate ligaments are both in a relaxed state, a preset traction force is achieved, and within a set floating range, a flexible traction force that continuously changes between tension and relaxation is applied to the joint cavity, which has a piston-like squeezing and suction effect, promotes local lymphatic and blood circulation, increases joint space and joint mobility, and produces clinical therapeutic effects. At the same time, the device adopts intelligent control, is easy to operate, safe and effective, small in size, light in weight, easy to carry and store, and can be placed on the bed and used by a family doctor or family members to assist in operation, so that it is suitable for use in homes and medical institutions to meet general health needs.

[0005] To achieve the above-mentioned purpose, the present invention provides a portable dynamic traction device for knee joints, comprising a box, a traction device and an intelligent control system.

[0006] The box is trapezoidal in side view, and includes a front half box and a back half box. The rear end face of the back half box forms an angle of about 35 degrees with the bottom face and the upper end face, and is used to support the patient's thigh. The upper plane of the back half box and the upper plane of the front half box are used to support the patient's calf. The front end face of the back half box is connected with the rear end face of the front half box. A snap locking device is provided at the connection between the two boxes. By operating the snap locking device, the back half box can be loaded into the front half box, which is convenient for storage and carrying.

[0007] The traction device includes a traction motor, a rope pulley, a tension sensor, a support member, a guide wheel, a flexible transmission member, a traction bracket and a calf fixing belt; the traction motor and the tension sensor are installed on the bottom surface of the box; the rope pulley is installed on the transmission shaft of the traction motor; the support member is located at the front end surface of the front half of the box and extends upward to an appropriate height, and a guide wheel is installed at the upper and lower ends of the support member; the flexible transmission member is composed of a rope connected to a movable pulley, one end of the flexible transmission member is respectively connected to the tension sensor and the rope pulley, and the other end is connected to the traction bracket through the inside of the box and the guide wheel on the support member; the calf fixing belt can be hung on both ends of the traction bracket.

[0008] The intelligent control system includes a hardware system and a software system.

[0009] The hardware system includes a main control circuit board and a secondary control circuit board.

[0010] The main control circuit board includes a single chip microcomputer, a signal acquisition and processing unit, a communication unit and an effect port.

[0011] The signal acquisition and processing unit on the main control circuit board is electrically connected to the tension sensor, and the effect port on the main control circuit board is electrically connected to the traction motor.

[0012] The secondary control circuit board includes a single chip microcomputer, a communication unit, an instruction input unit and a display unit; the instruction input unit is electrically connected to the key, and the display unit is electrically connected to the display.

[0013] The software system includes a main control system and a secondary control system, which are respectively installed in the single chip microcomputers of the main control circuit board and the secondary control circuit board.

[0014] The main control system includes a tension information conversion module, a parameter setting module, a traction mode module and a communication module.

[0015] The tension information conversion module converts the analog signal received by the tension sensor into tension data for system call; the parameter setting module stores parameters such as default traction force, floating range, traction time, etc. for different traction modes, as well as the settable range and setting method of these parameters, for system call and user modification or restoration; the traction mode module sets the parameter call rules and processing flow under each traction mode, which is used to control the operation of the traction motor to generate a preset traction force that can be transmitted to the patient's joint through the transmission device. Within the set floating range, the flexible longitudinal traction force with a continuous change of sine wave-like tension and relaxation has a piston-like squeezing and suction effect on the joint cavity, promoting local lymphatic and blood circulation, and realizing the dynamic traction function; the communication module specifies the transmission and processing protocol for user instructions, instantaneous tension, set force, set time, elapsed time, system status and other data information, and is used for communication between the main control system and the secondary control system.

[0016] The secondary control system includes a user instruction processing module, a display module and a communication module.

[0017] The user instruction processing module specifies the judgment rules and processing methods for user instructions issued by the user through buttons, the data display module specifies the display method for data such as force, time and system status, and the communication module is functionally connected to the communication module installed in the main control system.

[0018] Preferably, the box is trapezoidal in side view and consists of nestable front and rear halves, with the rear end face of the rear half forming an angle of about 35 degrees with the bottom and upper planes to meet the body position requirements during knee traction.

[0019] Preferably, the hardware system of the traction device and the control system is mainly installed inside the box, which is convenient for storage and carrying.

[0020] Preferably, the traction mode is a dynamic traction mode, that is, the flexible longitudinal traction force continuously changes in a sine wave-like manner around a preset traction force within a set floating range.

[0021] As described above, the portable programmable knee joint dynamic traction device of the present invention has the following beneficial effects:

[0022] The basic pathological changes of joint diseases such as knee osteoarthritis are inflammation and wear, thinning of articular cartilage, narrowing of joint space, and osteophyte formation. When the knee joint is in a semi-flexed position, the anterior and posterior cruciate ligaments are in a relatively relaxed state. Dynamic traction can produce a piston-like squeezing and suction effect, which can increase the joint space, restore the normal force line of the lower limb joints, promote lymphatic circulation in the joints, increase the nutrient supply to the articular cartilage, meniscus and intra-articular ligaments, improve blood circulation in the tissues around the joints, relieve muscle spasms, and increase the range of motion of the knee joint, thereby enhancing the treatment effect.

[0023] The portable dynamic knee traction device and control system of the present invention adopts low-voltage power, intelligent control, overload and timeout limits, reducing the risk of misoperation and over-traction, and ensuring safety to the greatest extent possible;

[0024] The incidence of joint diseases such as knee osteoarthritis is very high in the middle-aged and elderly population, and there is a lack of effective treatment methods. It is one of the problems that urgently need to be solved in the field of health. The portable knee dynamic traction device of the present invention is highly intelligent, simple to operate, safe, comfortable, effective, takes up little space, is easy to carry and store, and can be placed on an ordinary bed when in use. The operation can be assisted by a family doctor or family members, which facilitates treatment and provides a new treatment method and treatment device for the clinical treatment of knee joint diseases. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 .Schematic diagram of the structure of the portable knee joint dynamic traction device of the present invention.

[0026] Figure 2 .Schematic diagram of the traction device structure of the portable knee joint dynamic traction device of the present invention.

[0027] Figure 3 . Schematic diagram of the control system of the portable knee joint dynamic traction device of the present invention.

[0028] Figure 4 .Schematic diagram of the dynamic traction mode of the portable knee joint dynamic traction device of the present invention.

[0029] Numbers in the figure: 1, box, 2, traction device, 3, intelligent control system, 4, rear half of the box, 5, front half of the box, 6, rear end surface of the rear half of the box, 7, bottom surface of the rear half of the box, 8, upper plane of the rear half, 9, angle, 10, upper plane of the front half of the box, 11, front end surface of the rear half of the box, 12, rear end surface of the front half of the box, 13, buckle locking device, 14, traction motor, 15, rope pulley, 16, tension sensor, 17, support member, 18, guide wheel, 19, guide wheel, 20, traction bracket, 21, flexible transmission member, 22, calf fixing belt, 23, outer sleeve, 24, inner sleeve, 25, buckle device, 26, main circuit board box, 27 , hardware system, 28. Software system, 29. Main control circuit board, 30. Secondary control circuit board, 31. Single chip microcomputer, 32. Signal acquisition and processing unit, 33. Effect port, 34. Communication unit, 35. Single chip microcomputer, 36. Command input unit, 37. Display unit, 38. Communication unit, 39. Button, 40. Display, 41. Main control system, 42. Secondary control system, 43. Tension information conversion module, 44. Parameter setting module, 45. Traction mode module, 46. Communication module, 47. Analog signal, 48. User command processing module, 49. Display module, 50. Communication module, 51. User command, 52. Display information, 53. Secondary control circuit board box. DETAILED DESCRIPTION

[0030] The following describes the embodiments of the present invention in detail using specific embodiments in conjunction with the accompanying drawings. Those skilled in the art will readily appreciate the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention.

[0031] It should be noted that the structures, units, and module divisions illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, adjustment of the unit and module division should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, terms such as "upper", "lower", "inside", "outside", "front", and "back" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0032] like Figure 1As shown, as an embodiment of the present invention, the portable dynamic knee traction device includes a box 1, a traction device 2 and an intelligent control system 3.

[0033] The box body 1 of this embodiment is trapezoidal in side view, and includes a rear half box body 4 and a front half box body 5. The rear end face 6 of the rear half box body 4 forms an angle 9 with the bottom face 7 and the upper plane 8 of about 35 degrees. The rear end face 6 of the rear half box body 4 is used to support the patient's thigh, the upper plane 7 of the rear half box body 4 and the upper plane 10 of the front half box body are used to support the patient's calf, the front end face 11 of the rear half box body 4 is connected with the rear end face 12 of the front half box body 5, and a snap locking device 13 is provided at the connection between the two halves of the box body. By operating the snap locking device 13, the rear half box body 4 can be loaded into the front half box body 5 for easy carrying and storage.

[0034] like Figure 2 As shown, the traction device 2 of this embodiment includes a traction motor 14, a rope reel 15, a tension sensor 16, a support member 17, a guide wheel 18, a guide wheel 19, a traction hanger 20, a flexible transmission member 21 and a calf fixing belt 22.

[0035] The traction motor 14 and the tension sensor 16 of this embodiment are fixedly installed on the inner bottom surface of the box body 1; the rope pulley 15 is installed on the transmission shaft of the traction motor 14; the supporting member 17 includes an inner and outer sleeve, the outer sleeve 23 is vertically fixed to the inner surface of the front end surface of the box body 1, and the guide wheel 18 is installed at the lower end thereof, the inner sleeve 24 is installed inside the outer sleeve, and the guide wheel 19 is installed at the upper end. A snap locking device 25 is installed between the inner and outer sleeves. The traction angle can be adjusted by operating the snap locking device 25; the flexible transmission member 21 is composed of a rope connected to a movable pulley, one end of the flexible transmission member 21 is respectively connected to the rope pulley 15 and the tension sensor 16, and the other end is connected to the traction bracket 20 through the interior of the box body 1, the guide wheel 18, the guide wheel 19; the calf fixing belt 22 can be hung to both ends of the traction bracket 20.

[0036] like Figure 3 As shown, the intelligent control system 3 of this embodiment includes a hardware system 27 and a software system 28 .

[0037] The hardware system 27 includes a main control circuit board 29 and a secondary control circuit board 30 .

[0038] The main control circuit board 29 includes a single-chip microcomputer 31, a signal acquisition and processing unit 32, an effect port 33 and a communication unit 34; the signal acquisition and processing unit 32 is electrically connected to the tension sensor 16, and the effect port 33 is electrically connected to the traction motor 14. The main control circuit board 29 is installed in the main circuit board box 26 inside the box body 1.

[0039] The secondary control circuit board 30 includes a single-chip microcomputer 35, a command input unit 36, a display unit 37 and a communication unit 38; the command input unit 36 ​​is electrically connected to the button 39, and the display unit 37 is electrically connected to the display 40; the secondary control circuit board 30 is electrically and data-connected to the main control circuit board 29, and the secondary control circuit board 30 is installed in the control box 53, which can be placed or embedded in a place outside the box for convenient operation and use.

[0040] The software system 28 includes a primary control system 41 and a secondary control system 42 , which are installed in the single chip microcomputer 31 of the primary control circuit board 29 and the single chip microcomputer 35 of the secondary control circuit board 30 , respectively.

[0041] The main control system 41 includes a tension information conversion module 43, a parameter setting module 44, a traction mode module 45 and a communication module 46; the tension information conversion module 43 converts the analog signal 47 received by the tension sensor 16 into tension data; the parameter setting module 44 stores the default traction force, floating range, traction time and other parameters used for different traction modes, as well as the settable range and setting method of these parameters, for system call and user modification or restoration; the traction mode module 45 sets the parameter call rules and processing flow under each traction mode, which is used to control the operation of the traction motor 14, generate a preset traction force that can be transmitted to the patient's joint through the transmission device, and within the set floating range, the flexible traction force with a continuous change of sine wave-like tension and relaxation has a piston-like squeezing and suction effect on the joint cavity, promoting local lymph and blood circulation, and realizing the above-mentioned dynamic traction function; the communication module 46 specifies the transmission and processing protocols of various data information, which is used for communication between the main control system 41 and the secondary control system 42.

[0042] The secondary control system 42 includes a user instruction processing module 48, a display module 49 and a communication module 50; the user instruction processing module 48 stipulates the judgment rules and processing methods for user instructions 51; the display module 49 stipulates the display method for display information 52 such as force, time and system status; the communication module 50 is functionally connected to the communication module 46 installed in the main control system 41.

[0043] like Figure 4 As shown, the traction mode used in the present invention is a dynamic traction mode, that is, around the preset traction force, within a set floating range, the flexible traction force continuously changes in a sine wave-like manner.

[0044] The power source used in the present invention is a DC power source or a battery, and may also be an AC power source.

[0045] The box used in the present invention can be a box with two front and rear parts that can be embedded for storage, or can be a box with two front and rear parts that can be folded for storage, or can be an integral box.

[0046] The supporting member 17 used in the present invention includes two inner and outer sleeves, and the outer sleeve 23 is vertically fixed to the inner surface of the front end surface of the box body 1; the supporting member 17 can also be a front end panel of the box body 1 extending upward to an appropriate height.

[0047] The traction motor 14 used in the present invention is a DC reduction motor or an AC reduction motor, and can also be an electric push rod.

[0048] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A portable dynamic knee traction device, characterized by: It comprises a box (1), a traction device (2) and an intelligent control system (3); The box (1) comprises a rear half box (4) and a front half box (5), the rear end face (6) of the rear half box (4) and the bottom face (7) and the upper plane (8) all form an angle (9) of about 35 degrees, the rear end face (6) of the rear half box (4) is used to support the patient's thigh, the upper plane (7) of the rear half box (4) and the upper plane (10) of the front half box are used to support the patient's calf, the front end face (11) of the rear half box (4) and the rear end face (12) of the front half box (5) are connected, and a buckle locking device (13) is provided at the connection between the two halves of the box. When the buckle locking device (13) is operated, the rear half box (4) can be loaded into the front half box (5), which is convenient for carrying and storage; The traction device comprises a traction motor (14), a rope reel (15), a tension sensor (16), a support member (17), a guide wheel (18-19), a traction hanger (20), a flexible transmission member (21) and a calf fixing belt (22); the traction motor (14) and the tension sensor (16) are mounted on the bottom surface of the interior of the box (1), and the rope reel (15) is mounted on the transmission shaft of the traction motor (14); the support member (17) comprises an inner and outer sleeve, the outer sleeve (23) is vertically fixed to the inner surface of the front end panel of the box (1), the guide wheel (18) is mounted on the lower end thereof, and the inner sleeve (24) is mounted inside the outer sleeve (23). The upper end of the box body (1) is provided with a guide wheel (19), and a buckle locking device (25) is installed between the inner and outer sleeves; the flexible transmission member (21) is composed of a rope connected to a movable pulley, one end of the flexible transmission member (21) is connected to the rope reel (15) and the tension sensor (16) respectively, and the other end is connected to the traction hanger through the guide wheel (18) and the guide wheel (19) on the interior of the box body (1) and the support member (17); the calf fixing belt (22) can be hung on both ends of the traction hanger (20); The intelligent control system (3) includes a hardware system (27) and a software system (28); the hardware system (27) includes a main control circuit board (29) and a secondary control circuit board (30); the main control circuit board (29) includes a single-chip microcomputer (31), a signal acquisition and processing unit (32), an effect port (33) and a communication unit (34); the secondary control circuit board (30) includes a single-chip microcomputer (35), an instruction input unit (36), a display unit (37) and a communication unit (38); the software system (28) includes a main control system (41) and a secondary control system (42); the main control system (41) includes a tension information conversion module (43), a parameter setting module (44), a traction mode module (45) and a communication module (46); the secondary control system (42) includes a user instruction processing module (48), a display module (49) and a communication module (50).

2. The portable dynamic knee traction device according to claim 1, characterized in that: The parameter setting module (44) stores parameters such as default traction force, floating range, traction time, etc. for use in different traction modes, as well as the settable range and setting method of these parameters, for system call and user modification or restoration; the traction mode module (45) sets the parameter call rules and processing flow under each traction mode, which is used to control the operation of the traction motor (15) and generate a preset traction force that can be transmitted to the patient's knee joint through the transmission device (2). Within the set floating range, the flexible traction force that continuously changes between tension and relaxation has a piston-like squeezing and suction effect on the joint cavity, thereby increasing the joint gap and joint mobility.

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