Cross belt tensioning device for osteoarthritis brace

Abstract

The cross belt tensioning device comprises fixing cloth, connecting cloth is arranged at the upper end and the lower end of one side of the fixing cloth, a connecting buckle is arranged at the upper end of each connecting cloth, and binding belts are arranged at the upper end and the lower end of the other side of the fixing cloth. Two crossed pressure belts are movably arranged at the front end of the outer wall of the fixing cloth, piezoelectric film sensors are installed on the inner walls of the crossed positions of the two pressure belts, fixing bases are arranged on the left side and the right side of the upper end of the outer wall of the fixing cloth, a driving assembly is arranged at the upper end of each fixing base, and a positioning piece is arranged above the front end of the outer wall of the fixing cloth. A control panel is installed above the front end of the positioning piece, and a storage battery is detachably connected below the front end of the positioning piece. The tension of the bandage can be flexibly adjusted according to knee bending and straightening states of knee joints when a patient walks, so that knee pain caused by osteoarthritis is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a cross-strap tensioning device for an osteoarthritis brace. Background Art

[0002] The knee joint (including the femoro-patellar joint and the femoro-tibial joint) is the largest and most complex joint in the human body. It is also one of the most vulnerable joints and has the highest incidence rate in the body. The onset of knee osteoarthritis is largely related to prolonged excessive stress on the knee joint. Therefore, reducing the motion load of the knee joint and keeping it within a reasonable stress range is an important means of preventing and treating knee osteoarthritis in addition to drug treatment. Braces are widely used to treat various diseases, including osteoarthritis. Such braces can be configured to apply force or leverage around the joint to the limb to relieve the compressive force within a part of the joint or reduce the load on the joint. In addition, braces can stabilize, protect, support, or repair joints when the ligaments are fragile and weak.

[0003] However, existing knee braces basically apply constant pressure to the patient's joints. When the patient walks, the knee joint will flex and straighten. Existing knee braces cannot adjust the tension according to the patient's walking state, thereby failing to reduce osteoarthritis knee pain and improve knee function. Summary of the Invention

[0004] The purpose of the present invention is to provide a cross-strap tensioning device for an osteoarthritis brace, which can flexibly adjust the tension of the strap according to the flexion and extension state of the knee joint when the patient walks, thereby reducing osteoarthritis knee pain.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: A cross-strap tensioning device for an osteoarthritis brace comprises a fixing cloth, wherein connecting cloths are provided at the upper and lower ends of one side of the fixing cloth, and a connecting buckle is provided at the upper end of each connecting cloth near the fixing cloth. A binding strap is provided at the upper and lower ends of the other side of the fixing cloth, which passes through the corresponding connecting buckle and cooperates with it to fix it. Two cross-elastic pressure belts are movably provided at the front end of the outer wall of the fixing cloth, the lower ends of the pressure belts are fixedly connected to the fixing cloth, and the upper ends of the pressure belts are freely movable. Piezoelectric film sensors are mounted on the inner walls of the intersection of the two pressure belts and cooperate with each other to detect the local tension value of the corresponding pressure belt in real time. Fixed seats are provided on the left and right sides of the upper end of the outer wall of the fixing cloth, and the upper end of each fixing seat is provided with a drive assembly connected to the free end of the pressure belt and used to adjust the tension of the pressure belt. A positioning piece is provided above the front end of the outer wall of the fixing cloth, and a control panel is mounted above the front end of the positioning piece. A battery electrically connected to the control panel is detachably connected to the front end of the positioning piece below the control panel. The piezoelectric film sensor and the drive assembly are both electrically connected to the control panel.

[0006] By adopting the above technical solution, when in use, first cover the patient's knee with the fixing cloth, then pass the strap through the corresponding connecting buckle, appropriately adjust the position of the fixing cloth and fix it on the patient's leg, so that the cross position of the pressure belt is located on the patient's knee. It is powered by a battery, and the control panel is operated to make the drive component on the fixing seat work while adjusting the tension of the pressure belt on the patient's knee according to the actual situation of the patient. When the patient is walking, his knee will flex and straighten. In this process, the movement of the knee will cause the tension of the pressure belt to change, and the piezoelectric film sensor will monitor the force applied by the pressure belt to the patient's knee in real time. When the change of the tension of the pressure belt exceeds the set range value, the drive component will flexibly adjust the tension of the pressure belt according to the force detected by the pressure film sensor, thereby ensuring that the tension of the patient's knee is constant, thereby achieving the effect of reducing osteoarthritis knee pain.

[0007] The present invention is further configured as follows: the outer wall of each strap is provided with a first velvet Velcro, and the outer wall of the free end thereof is provided with a first hook Velcro used in conjunction with the first velvet Velcro.

[0008] The present invention is further configured as follows: both upper and lower ends of the fixing cloth are provided with fixing components that can be fixed to the patient's legs for fixing the fixing cloth.

[0009] The present invention is further configured as follows: the fixing component includes an elastic fixing belt, an anti-slip sticker arranged at the front end of the inner wall of the fixing belt, a plurality of connecting belts arranged at the bottom of the fixing belt, a second suede Velcro arranged on one side of the outer wall of the fixing belt, and a second hook-surface Velcro arranged on the other side of the outer wall of the fixing belt and cooperating with the second suede Velcro.

[0010] By adopting the above technical solution, the two fixing components can be fixed at the upper and lower positions of the patient's knee respectively, thereby improving the stability of the fixing cloth on the patient's knee, and avoiding displacement of the fixing cloth and the patient's knee during the patient's activities, which affects the fixation effect.

[0011] The present invention is further configured as follows: a rotating disk is rotatably connected between the bottom of each driving assembly and the upper end of the corresponding fixing seat.

[0012] By adopting the above technical solution, the driving component can change the angle accordingly according to the changes in the patient's knee flexion and extension when the patient is moving, thereby facilitating the driving component to adjust the tension of the pressure belt to avoid jamming.

[0013] The present invention is further configured as follows: the drive assembly includes a hollow shell, a slot opened at the lower side of the outer wall of the shell, drive motors respectively installed on the left and rear sides of the bottom of the inner wall of the shell, and a rotating wheel arranged between the power output shafts of the two drive motors, and the free end of each pressure belt passes through the slot and is wrapped around the outer wall of the corresponding rotating wheel.

[0014] The present invention is further configured as follows: the upper and lower ends of the inner wall of each slot are rotatably connected to a rotating shaft, and the upper end of the outer wall of each shell is downwardly provided with a plurality of air holes in an array.

[0015] By adopting the above technical solution, not only can the friction between the pressure belt and the notch be reduced and its service life be increased, but the air vents can also facilitate the circulation of air in the shell and the dissipation of heat from the drive motor.

[0016] In summary, the present invention has the following beneficial effects: First, the present invention can flexibly adjust the tension of the strap according to the flexion and extension state of the patient's knee joint when walking, thereby reducing knee pain caused by osteoarthritis; Secondly, the fixing components of the present invention can be fixed at the upper and lower positions of the patient's knee, thereby improving the stability of the fixing cloth on the patient's knee and preventing the fixing cloth and the patient's knee from shifting during the patient's activities, which would affect the fixing effect; Third, the driving component of the present invention can flexibly adjust the tension of the pressure belt according to the changing state of the patient's knee during activity, so that the fixing cloth and the pressure belt can maintain a constant pressure on the patient's knee, thereby improving the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is mainly used to show the position and connection relationship of each component; Figure 3 It is a schematic structural diagram of the drive assembly of the present invention; Figure 4 It is mainly used to demonstrate piezoelectric film sensors.

[0018] In the figure: 1. Fixing cloth; 11. Connecting cloth; 12. Connecting buckle; 13. Strap; 14. First suede Velcro; 15. First hook Velcro; 2. Fixing assembly; 21. Fixing belt; 22. Anti-slip sticker; 23. Connecting belt; 24. Second suede Velcro; 25. Second hook Velcro; 3. Pressure belt; 31. Piezoelectric film sensor; 32. Fixing seat; 33. Rotating disk; 4. Driving assembly; 41. Housing; 42. Notch; 43. Driving motor; 44. Rotating wheel; 45. Rotating shaft; 46. Ventilation hole; 5. Positioning piece; 51. Control panel; 52. Battery. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0021] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0022] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections, direct connections, indirect connections via an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0023] Example, see Figure 1-4 A cross-strap tensioning device for an osteoarthritis brace comprises a fixing cloth 1, wherein the upper and lower ends of one side of the fixing cloth 1 are both provided with a connecting cloth 11, and the upper end of each connecting cloth 11 is provided with a connecting buckle 12 near the position of the fixing cloth 1, and the upper and lower ends of the other side of the fixing cloth 1 are both provided with a strap 13 that passes through the corresponding connecting buckle 12 and cooperates with it to fix it, and the outer wall of each strap 13 is provided with a first suede Velcro 14, and the outer wall of its free end is provided with a first suede Velcro 14 that cooperates with the first suede Velcro 14. The first hook-surface Velcro 15 used, the upper and lower ends of the fixing cloth 1 are cooperated with a fixing component 2 that can be fixed on the patient's leg to fix the fixing cloth 1, the fixing component 2 includes an elastic fixing belt 21, an anti-slip patch 22 arranged at the front end of the inner wall of the fixing belt 21, a plurality of connecting belts 23 arranged at the bottom of the fixing belt 21, a second velvet Velcro 24 arranged on one side of the outer wall of the fixing belt 21, and a second hook-surface Velcro 25 arranged on the other side of the outer wall of the fixing belt 21 and used in conjunction with the second velvet Velcro 24.

[0024] Two cross-shaped and elastic pressure belts 3 are movably provided at the front end of the outer wall of the fixed cloth 1. The lower end of the pressure belt 3 is fixedly connected to the fixed cloth 1, and its upper end can move freely. The inner wall of the intersection of the two pressure belts 3 is installed with a piezoelectric film sensor 31 that cooperates with it and is used to detect the local tension value of the corresponding pressure belt 3 in real time. A fixed seat 32 is provided on the left and right sides of the upper end of the outer wall of the fixed cloth 1. The upper end of each fixed seat 32 is provided with a driving component 4 that is connected to the free end of the corresponding pressure belt 3 and is used to adjust the tension force thereof. A rotating disk 33 is rotatably connected between the bottom of each driving component 4 and the upper end of the corresponding fixed seat 32. The driving component 4 includes an internal hollow shell 41, a slot 42 opened at the lower side of the outer wall of the shell 41, two driving motors 43 respectively installed on the left and rear sides of the bottom of the inner wall of the shell 41, and a rotating wheel 44 cooperatedly arranged between the power output shafts of the two driving motors 43.

[0025] The free end of each pressure belt 3 passes through the slot 42 and is wrapped around the outer wall of the corresponding rotating wheel 44. The upper and lower ends of the inner wall of each slot 42 are connected to a rotating shaft 45 for rotation. The upper end of the outer wall of each shell 41 is provided with a plurality of air holes 46 in an array downwardly. A positioning piece 5 is provided above the front end of the outer wall of the fixed cloth 1. A control panel 51 is installed above the front end of the positioning piece 5. A battery 52 electrically connected to the control panel 51 is detachably connected to the front end thereof below the control panel 51. The piezoelectric film sensor 31 and the drive motor 43 are electrically connected to the control panel 51.

[0026] Instructions for use: When in use, first cover the fixing cloth 1 on the patient's knee, then pass the strap 13 through the corresponding connecting buckle 12 and appropriately adjust the position of the fixing cloth 1 so that the cross position of the pressure belt 3 is located on the patient's knee, and then fix it to the patient's leg through the cooperation of the first velvet Velcro 14 and the first hook Velcro 15. Since the connecting buckle 12 is set in the middle position on the connecting cloth 11, the fixing buckle will not directly contact the patient's skin and cause pressure when fixed. Then fix the fixing component 2 to the corresponding positions of the patient's thigh and calf respectively. The fixing belt 21 first contacts the patient's leg and applies a force to the fixing cloth 1 through the connecting belt 23 to tighten it, and then fixes the fixing belt 21 to the patient's leg through the cooperation of the second velvet Velcro 24 and the second hook Velcro 25, and the anti-slip patch 22 can improve the stability of the fixing belt 21 on the patient's leg.

[0027] Next, the control panel 51 on the operating positioning piece 5 is powered by the battery 52 to make the driving component 4 on the fixing seat 32 work, and at the same time, the tension of the pressure belt 3 on the patient's knee is adjusted according to the actual situation of the patient. When the patient is walking, his knees will bend and straighten. In this process, the movement of the knees will cause the tension of the pressure belt 3 to change, and the piezoelectric film sensor 31 will monitor the force applied by the pressure belt 3 to the patient's knee in real time. When the change in the tension of the pressure belt 3 exceeds the set range value, the two driving motors 43 in the shell 41 will synchronously drive the turntable 44 to work and flexibly adjust the tension of the pressure belt 3 according to the force detected by the pressure film sensor.

[0028] The upper end of the pressure belt 3 will move in the slot 42 to ensure that the tension force of the device on the patient's knee is constant, thereby reducing the pain of the knee caused by osteoarthritis. The turntable can allow the drive component 4 to adjust the angle appropriately according to the patient's activities, avoiding the pressure belt 3 from getting stuck while improving the accuracy of the pressure applied to the patient's knee. When the pressure belt 3 slides in the slot 42, the rotating shaft 45 can reduce the friction of the slot 42 on the pressure belt 3, thereby increasing its service life. The air vent 46 can allow outside air to enter the shell 41, facilitating the dissipation of heat when the drive motor 43 is working.

[0029] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make creative modifications to this embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A cross-strap tensioning device for an osteoarthritis brace, comprising a fixing cloth (1), characterized in that: The upper and lower ends of one side of the fixing cloth (1) are provided with connecting cloths (11), and the upper end of each connecting cloth (11) is provided with a connecting buckle (12) near the position of the fixing cloth (1). The upper and lower ends of the other side of the fixing cloth (1) are provided with a strap (13) that passes through the corresponding connecting buckle (12) and cooperates with it to fix it. The front end of the outer wall of the fixing cloth (1) is movably provided with two cross-shaped and elastic pressure belts (3), the lower end of the pressure belt (3) is fixedly connected to the fixing cloth (1), and the upper end thereof is freely movable. The inner wall of the intersection of the two pressure belts (3) is equipped with a corresponding pressure belt (3) that cooperates with it and is used for real-time detection of the corresponding pressure belt ( 3) A piezoelectric film sensor (31) for local tension value, wherein a fixing seat (32) is provided on both sides of the upper end of the outer wall of the fixing cloth (1), and a driving assembly (4) connected to the free end of the pressure belt (3) and used to adjust the tension thereof is provided on the upper end of each fixing seat (32), a positioning piece (5) is provided above the front end of the outer wall of the fixing cloth (1), a control panel (51) is installed above the front end of the positioning piece (5), and a battery (52) electrically connected thereto is detachably connected to the front end of the control panel (51) below the control panel (51), and the piezoelectric film sensor (31) and the driving assembly (4) are both electrically connected to the control panel (51).

2. A cross-strap tensioning device for an osteoarthritis brace according to claim 1, characterized in that: The outer wall of each binding strap (13) is provided with a first velvet Velcro (14), and the outer wall of the free end thereof is provided with a first hook Velcro (15) used in conjunction with the first velvet Velcro (14).

3. The cross-strap tensioning device for an osteoarthritis brace according to claim 1, characterized in that: The upper and lower ends of the fixing cloth (1) are both provided with fixing components (2) that can be fixed on the patient's legs for fixing the fixing cloth (1).

4. The cross-strap tensioning device for an osteoarthritis brace according to claim 3, characterized in that: The fixing assembly (2) comprises an elastic fixing belt (21), an anti-slip patch (22) arranged at the front end of the inner wall of the fixing belt (21), a plurality of connecting belts (23) arranged at the bottom of the fixing belt (21), a second velvet Velcro (24) arranged at one side of the outer wall of the fixing belt (21), and a second hook Velcro (25) arranged at the other side of the outer wall of the fixing belt (21) and cooperating with the second velvet Velcro (24).

5. The cross-strap tensioning device for an osteoarthritis brace according to claim 1, characterized in that: A rotating disk (33) is rotatably connected between the bottom of each driving assembly (4) and the upper end of the corresponding fixing seat (32).

6. The cross-strap tensioning device for an osteoarthritis brace according to claim 5, characterized in that: The driving assembly (4) comprises a hollow shell (41), a slot (42) provided at the lower side of the outer wall of the shell (41), driving motors (43) respectively mounted on the left and rear sides of the bottom of the inner wall of the shell (41), and a rotating wheel (44) arranged between the power output shafts of the two driving motors (43). The free end of each pressure belt (3) passes through the slot (42) and is wound around the outer wall of the corresponding rotating wheel (44).

7. The cross-strap tensioning device for an osteoarthritis brace according to claim 6, characterized in that: The upper and lower ends of the inner wall of each slot (42) are rotatably connected to a rotating shaft (45), and the upper end of the outer wall of each shell (41) is downwardly provided with a plurality of air holes (46) in an array.

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