Ankle foot orthosis

Abstract

An air inflation bag and an electric heating wire net are arranged on the inner side of a shank part of the ankle-foot orthosis, the air inflation bag is connected with an air pump through an air pipe, the air pump is connected with a controller and used for driving the air inflation bag to inflate and deflate under the control of the controller, and the electric heating wire net is connected with the controller and used for heating the shank under the control of the controller. The foot supporting piece can support a foot and is fixedly connected with the foot through a foot bandage, a vibration motor is arranged at the bottom of the foot supporting piece, the vibration motor is connected with the controller and used for being controlled by the controller to vibrate the foot sole, a servo motor is arranged on the foot supporting piece, a connecting plate is arranged on a rotating shaft of the servo motor and connected with the bottom end of the shank piece, and the shank piece is connected with the foot supporting piece. The servo motor is connected with the controller and used for adjusting the included angle between the shank piece and the foot support piece through control of the controller. The device has the functions of pressing and heating the calf, vibrating the sole and passively moving the ankle joint, so that the control capability of the movement of the lower limb is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an ankle-foot orthosis. Background Art

[0002] Patients who are bedridden for a long time due to central nervous system damage, such as craniocerebral injury, intracranial infection, spinal cord injury, encephalopathy and other sequelae or vegetative state, often suffer from triceps surae spasm, Achilles tendon contracture, foot drop, osteoporosis, deep vein thrombosis of the lower limbs and proprioception abnormalities, which greatly affect the quality of life of patients and even threaten their lives. However, there is no specific treatment for the above conditions, and they can only be slowed down by rehabilitation training, wax therapy, electric massage and other equipment, which have poor improvement in limb movement control ability. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an ankle-foot orthosis that can relieve calf triceps spasm and atrophy, Achilles tendon contracture, increase the range of motion of the ankle joint, slow down osteoporosis, prevent deep vein thrombosis of the lower limbs, promote blood circulation in the lower limbs, increase the proprioception of the lower limbs, and improve the ability to control limb movement.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] An ankle-foot orthosis comprises a calf piece and a foot support piece, wherein the calf piece is provided with a calf strap and can be fixedly wrapped by the calf strap, an inflatable bag and an electric heating wire mesh are provided on the inner side of the calf piece, the inflatable bag is connected to an air pump through an air pipe, the air pump is connected to a controller and is used to drive the inflatable bag to inflate and deflate through the controller, the electric heating wire mesh is connected to the controller and is used to heat the calf through the controller, the foot support piece can support the foot and is fixedly connected to the foot through the foot strap, a vibration motor is provided at the bottom of the foot support piece, the vibration motor is connected to the controller and is used to vibrate the sole of the foot through the controller, a servo motor is provided on the rotating shaft of the servo motor, a connecting plate is provided, the connecting plate is connected to the bottom end of the calf piece, the servo motor is connected to the controller and is used to adjust the angle between the calf piece and the foot support piece through the controller.

[0006] As a further improvement of the above technical solution:

[0007] Two inflatable bags are attached to the inner side of the calf piece, the electric heating wire mesh is attached to the side of the inflatable bag close to the calf and can wrap the calf, each of the inflatable bags is provided with an air pressure sensor, the controller is provided with a frequency conversion switch, the frequency conversion switch is connected to the air pressure sensor, and is used to collect the air pressure data in the inflatable bag and transmit it to the frequency conversion switch.

[0008] Each of the inflatable bags is in a strip shape.

[0009] The electric heating wire mesh is provided with a temperature sensor, the controller is provided with a timer and a thermostat, the thermostat is respectively connected with the timer and the temperature sensor, and is used to adjust the heating temperature and time.

[0010] The electric heating wire mesh comprises a hard cloth, an electric heating wire and a cloth cover, wherein the hard cloth is laid on the inflatable bag, the electric heating wire is laid on the hard cloth, and the cloth cover covers the electric heating wire.

[0011] The heating wires are arranged in a serpentine shape.

[0012] Three vibration motors are arranged at the bottom of the foot support, and a speed regulating switch is arranged on the controller. The speed regulating switch is connected with each vibration motor and is used for regulating the vibration frequency and vibration amplitude of each vibration motor.

[0013] The ends of the calf strap and the foot strap are both provided with Velcro tapes which are bonded to each other.

[0014] The cross section of the calf member along the length direction of the calf is C-shaped.

[0015] The servo motor is provided with an angle sensor and a reduction gear, the rotating shaft is connected to the reduction gear, the connecting plate is connected to the output shaft of the reduction gear, the angle sensor is connected to the output shaft, and the controller is provided with an angle adjuster, which is connected to the servo motor and is used to adjust the angle between the calf part and the foot support part.

[0016] Compared with the prior art, the advantages of the utility model are:

[0017] The utility model can wrap the calf with the calf strap and tighten it to fit the calf, and the space between them is relatively fixed. The inflatable bag is inflated and deflated to press the calf with a certain pressure, so that the blood vessels in the leg are rhythmically squeezed, and the blood in the blood vessels can be accelerated to improve the blood circulation of the lower limbs and prevent the formation of venous thrombosis. The thermal effect of the electric heating wire mesh can simulate the temperature during wax therapy to heat the calf triceps, which can promote the blood circulation of the lower limbs and reduce Muscle tension, softening the Achilles tendon, relieving calf triceps spasm and atrophy, preventing or slowing down Achilles tendon contracture and foot drop; the foot support can support the foot through the foot strap; the vibration motor is arranged in the plantar interlayer of the foot support, and the vibration of the sole can slow down osteoporosis, increase the proprioception of the lower limbs, and improve limb movement; the servo motor can increase the range of motion of the ankle joint; in summary, the present embodiment can simultaneously have the functions of calf pressing and heating, plantar vibration, and passive ankle movement, thereby improving the control ability of the lower limb movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of an ankle-foot orthosis.

[0019] Legend:

[0020] 1. Calf piece; 11. Calf strap; 111. Velcro; 12. Air bag; 121. Air pump; 13. Electric heating wire mesh; 2. Foot support piece; 21. Foot strap; 22. Vibration motor; 3. Controller; 4. Servo motor; 41. Connecting plate. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] like Figure 1 As shown, the ankle-foot orthosis of this embodiment includes a calf member 1 and a foot support member 2. The calf member 1 is provided with a calf strap 11, and the calf can be fixedly wrapped by the calf strap 11. The inner side of the calf member 1 is provided with an inflatable bag 12 and an electric heating wire mesh 13. The inflatable bag 12 is connected to an air pump 121 through an air pipe. The air pump 121 is connected to a controller 3 and is used to drive the inflatable bag 12 to inflate and deflate through the controller 3. The electric heating wire mesh 13 is connected to the controller 3 and is used to control the controller 3 to heat the calf. The leg, the foot support 2 can support the foot and is fixedly connected to the foot through the foot strap 21, a vibration motor 22 is provided at the bottom of the foot support 2, the vibration motor 22 is connected to the controller 3 and is used to vibrate the sole of the foot through the controller 3, a servo motor 4 is provided on the foot support 2, a connecting plate 41 is provided on the rotating shaft of the servo motor 4, the connecting plate 41 is connected to the bottom end of the calf part 1, the servo motor 4 is connected to the controller 3, and is used to adjust the angle between the calf part 1 and the foot support 2 through the controller 3. The calf strap 11 can wrap the calf with the calf piece 1 and tighten it to fit the calf, with the space between them being relatively fixed. The inflation and deflation of the air bag 12 can press the calf with a certain pressure, so that the blood vessels in the leg are rhythmically squeezed, which can speed up the blood circulation in the blood vessels, thereby improving the blood circulation of the lower limbs and preventing the formation of venous thrombosis. The thermal effect of the electric heating wire mesh 13 can simulate the temperature (45-50°C) during wax therapy, heat the calf triceps, and promote the blood circulation of the lower limbs. Reduce muscle tension, soften the Achilles tendon, relieve spasm and atrophy of the triceps surae, prevent or slow down Achilles tendon contracture and foot drop; the foot strap 21 can support the foot with the foot support 2; the vibration motor 22 is arranged in the plantar interlayer of the foot support 2, and can slow down osteoporosis, increase lower limb proprioception, and improve limb movement by vibrating the sole; the servo motor 4 can increase the range of motion of the ankle joint. In summary, this embodiment can simultaneously have the functions of calf pressing and heating, plantar vibration, and passive ankle movement, thereby improving the control ability of lower limb movement.

[0023] In this embodiment, the calf member 1 and the foot support member 2 are made of polypropylene, which has chemical resistance, heat resistance, electrical insulation, high-strength mechanical properties, good high-wear resistance and processing properties.

[0024] In this embodiment, two inflatable bags 12 are attached to the inner side of the calf member 1, and the electric heating wire mesh 13 is attached to the side of the inflatable bag 12 close to the calf and can wrap the calf. Each inflatable bag 12 is provided with an air pressure sensor, and the controller 3 is provided with a frequency conversion switch, which is connected to the air pressure sensor and is used to collect the air pressure data in the inflatable bag 12 to transmit it to the frequency conversion switch. Through the setting of the air pressure sensor and the frequency conversion switch, the degree of inflation and deflation is fed back to the frequency conversion switch by the pressure sensor, so that the inflatable bag 12 can produce a suitable pressing force on the calf when inflated. The air pump 121 is controlled to start and stop through the frequency conversion switch to inflate and deflate the inflatable bag 12, and the calf is repeatedly pressed.

[0025] In this embodiment, each air bag 12 is in a strip shape.

[0026] In this embodiment, the electric heating wire mesh 13 is provided with a temperature sensor, and the controller 3 is provided with a timer and a thermostat, which are respectively connected to the timer and the temperature sensor and used to adjust the heating temperature and time. When the thermostat is turned on, when the temperature detected by the temperature sensor is less than 45°C, the electric heating wire mesh 13 is heated; when the temperature detected by the temperature sensor is greater than 50°C, the heating is stopped. The timer can be set to automatically power off after 0-30 minutes.

[0027] In this embodiment, the electric heating wire mesh 13 includes a hard cloth, an electric heating wire and a cloth cover, wherein the hard cloth is laid on the inflatable bag 12, the electric heating wire is laid on the hard cloth, and the cloth cover covers the electric heating wire. The electric heating wire mesh 13 is arranged on the inner side of the inflatable bag 12, and the electric heating wire of the insulating soft cable type is fixed on the hard cloth in a serpentine wiring manner, and the electric heating wire is then wrapped with a cloth cover.

[0028] In this embodiment, the heating wires are arranged in a serpentine shape.

[0029] In this embodiment, three vibration motors 22 are provided at the bottom of the foot support 2, and a speed regulating switch is provided on the controller 3. The speed regulating switch is connected to each vibration motor 22 and is used to adjust the vibration frequency and vibration amplitude of each vibration motor 22. In the power-on state, turn on the speed regulating switch on the control device to adjust the vibration frequency. The vibration frequency range can be set to 15-75Hz and the vibration amplitude can be set to 0-1cm. The sole of the foot vibrates at the same frequency as the vibration motor 22.

[0030] In this embodiment, the ends of the calf strap 11 and the foot strap 21 are both provided with mutually bonded Velcro 111. The Velcro 111 is easy to purchase, low in price, and convenient to process and sew.

[0031] In this embodiment, the cross section of the calf member 1 along the length direction of the calf is C-shaped. The opening of the calf member 1 is arranged near the toe part, and the opening of the foot support member 2 is arranged on the upper side, so as to facilitate wearing. The calf member 1 is thick at the top and thin at the bottom.

[0032] In this embodiment, the servo motor 4 is provided with an angle sensor and a reduction gear, the rotating shaft is connected to the reduction gear, the connecting plate 41 is connected to the output shaft of the reduction gear, the angle sensor is connected to the output shaft, and the controller 3 is provided with an angle adjuster, which is connected to the servo motor 4 and used to adjust the angle between the calf member 1 and the foot support member 2. The calf member 1 and the foot support member 2 are connected through the servo motor 4 and the connecting plate 41 to form an electric hinge structure of the ankle joint. The angle adjuster can drive the calf member 1 and the foot support member 2 to rotate relative to each other, and multiple gear angles can be set, such as 45-60-75-90-105-120-135 degrees, so that the foot can be passively flexed and extended.

[0033] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, improvements and changes obtained without departing from the technical concept of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An ankle-foot orthosis, comprising a calf member (1) and a foot support member (2), characterized in that: The calf member (1) is provided with a calf strap (11) and can be used to fix and wrap the calf. The inner side of the calf member (1) is provided with an inflatable bag (12) and an electric heating wire mesh (13). The inflatable bag (12) is connected to an air pump (121) via an air pipe. The air pump (121) is connected to a controller (3) and is used to drive the inflatable bag (12) to inflate and deflate through the controller (3). The electric heating wire mesh (13) is connected to the controller (3) and is used to heat the calf through the controller (3). The foot support member (2) can support the foot and pass the air pump (121) to drive the inflatable bag (12) to inflate and deflate. The foot support member (2) is fixedly connected to the foot through a foot strap (21); a vibration motor (22) is provided at the bottom of the foot support member (2); the vibration motor (22) is connected to a controller (3) and is used to vibrate the sole of the foot under control of the controller (3); a servo motor (4) is provided on the foot support member (2); a connecting plate (41) is provided on the rotating shaft of the servo motor (4); the connecting plate (41) is connected to the bottom end of the calf member (1); the servo motor (4) is connected to the controller (3) and is used to adjust the angle between the calf member (1) and the foot support member (2) under control of the controller (3).

2. The ankle-foot orthosis according to claim 1, characterized in that: Two inflatable bags (12) are attached to the inner side of the calf member (1); the electric heating wire mesh (13) is attached to the side of the inflatable bag (12) close to the calf and can wrap the calf; each inflatable bag (12) is provided with an air pressure sensor; the controller (3) is provided with a frequency conversion switch, which is connected to the air pressure sensor and is used to collect air pressure data in the inflatable bag (12) and transmit it to the frequency conversion switch.

3. The ankle-foot orthosis according to claim 2, characterized in that: Each of the inflatable bags (12) is in a strip shape.

4. The ankle-foot orthosis according to claim 1, characterized in that: The electric heating wire mesh (13) is provided with a temperature sensor, and the controller (3) is provided with a timer and a thermostat, wherein the thermostat is respectively connected to the timer and the temperature sensor and is used to adjust the heating temperature and time.

5. The ankle-foot orthosis according to claim 1, characterized in that: The electric heating wire mesh (13) comprises a hard cloth, an electric heating wire and a cloth cover, wherein the hard cloth is laid on the inflatable bag (12), the electric heating wire is laid on the hard cloth, and the cloth cover covers the electric heating wire.

6. The ankle-foot orthosis according to claim 5, characterized in that: The heating wire is arranged in a serpentine shape.

7. The ankle-foot orthosis according to claim 1, characterized in that: Three vibration motors (22) are provided at the bottom of the foot support (2), and a speed regulating switch is provided on the controller (3). The speed regulating switch is connected to each vibration motor (22) and is used to adjust the vibration frequency and vibration amplitude of each vibration motor (22).

8. The ankle-foot orthosis according to claim 1, characterized in that: The ends of the calf strap (11) and the foot strap (21) are both provided with Velcro (111) for bonding to each other.

9. The ankle-foot orthosis according to claim 1, characterized in that: The cross section of the calf member (1) along the length direction of the calf is C-shaped.

10. The ankle-foot orthosis according to any one of claims 1 to 9, characterized in that: The servo motor (4) is provided with an angle sensor and a reduction gear, the rotating shaft is connected to the reduction gear, the connecting plate (41) is connected to the output shaft of the reduction gear, the angle sensor is connected to the output shaft, and the controller (3) is provided with an angle adjuster, the angle adjuster is connected to the servo motor (4) and is used to adjust the angle between the calf part (1) and the foot support part (2).

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