A magnetic power hip disarticulation prosthesis

Abstract

The application discloses a kind of magnetic power hip disarticulation prosthesis power assisting mechanism, including prosthetic leg tube, support plate, ejection support frame, the support plate has first segment and second segment connected with each other, the first segment of the support plate is not collinear with second segment, the prosthetic leg tube is rotatably connected with the first segment of the support plate, the second segment of the support plate is used to support the leg of amputee, the prosthetic leg tube is located at the side away from the second segment of the support plate, the ejection support frame is rotatably connected with the first segment of the support plate, first magnet is provided on the ejection support frame, second magnet is provided on the prosthetic leg tube, the force between the first magnet and the second magnet can be adjusted.The present application realizes time-sharing power assistance by electromagnet, which can help amputees reduce physical consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of human rehabilitation equipment, and in particular to a power-assisting mechanism of a magnetically powered hip disarticulation prosthesis. Background Art

[0002] The use of hip prostheses is on the rise due to an increasing number of high-level amputations caused by natural disasters, traffic accidents, and malignant tumors. Traditional hip prostheses are passive and unpowered, requiring the user to lift their hips and swing their legs to achieve walking. This walking style not only presents severe asymmetry but also consumes more than twice the energy of a normal person, severely impacting the user's experience.

[0003] Therefore, technicians in this field are committed to providing a power assist mechanism for a magnetically powered hip dislocation prosthesis, which adds a magnetic power device that relies on magnetic force to achieve the power assist effect on the basis of a traditional prosthesis, and provides assistance to the user during walking without significantly increasing the overall volume of the traditional prosthesis. Summary of the Invention

[0004] In view of the defects in the prior art, the technical problem to be solved by the present invention is how to provide a power-assisting mechanism for a hip disarticulation prosthesis that can provide power to the user during walking.

[0005] To achieve the above-mentioned objectives, the present invention provides a power-assisting mechanism for a magnetically powered hip disarticulation prosthesis, comprising a prosthetic leg tube, a support plate, and an ejection support frame, wherein the support plate has a first section and a second section connected to each other, the first section and the second section of the support plate are not collinear, the prosthetic leg tube is rotatably connected to the first section of the support plate, the second section of the support plate is used to support the leg of an amputee, the prosthetic leg tube is located on a side away from the second section of the support plate, the ejection support frame is rotatably connected to the first section of the support plate, a first magnet is provided on the ejection support frame, and a second magnet is provided on the prosthetic leg tube, and the acting force between the first magnet and the second magnet is adjustable.

[0006] Furthermore, it also includes a fixing seat and a rotor joint, wherein the fixing seat is fixedly connected to the first section of the support plate, the first end of the rotor joint is rotatably connected to the fixing seat, and one end of the prosthetic leg tube is fixedly connected to the second end of the rotor joint.

[0007] Furthermore, a spring damper is provided between the rotor joint and the fixing seat, and the spring damper is in contact with the rotor joint and the fixing seat.

[0008] Furthermore, the rotation center of the ejection support frame coincides with the rotation center of the prosthetic leg tube.

[0009] Furthermore, the cross-section of the ejection support frame along the rotation direction is a broken line shape, and the ejection support frame is provided with a rectangular hollow along the rotation direction, and the width of the rectangular hollow is greater than the outer diameter of the prosthetic leg tube.

[0010] Furthermore, it also includes an ejection fixing frame, which is fixed to the first section of the support plate, and the ejection support frame is connected to the ejection fixing frame through a bearing screw.

[0011] Preferably, the second magnet is a double-sided ejection wing, and symmetrically distributed sinking grooves are provided on both sides of the double-sided ejection wing, and permanent magnets are provided in the sinking grooves.

[0012] Furthermore, the first magnet includes a left auxiliary ejection electromagnet and a right auxiliary ejection electromagnet, and the left auxiliary ejection electromagnet and the right auxiliary ejection electromagnet are symmetrically distributed about the central axis of the prosthetic leg tube and respectively cooperate with the permanent magnet.

[0013] Preferably, the left auxiliary ejection electromagnet and the right auxiliary ejection electromagnet repel each other with the permanent magnet.

[0014] Furthermore, a pressure sensor is provided on the second section of the support plate, and the pressure sensor is electrically connected to the left auxiliary ejection electromagnet and the right auxiliary ejection electromagnet.

[0015] The present invention has at least the following beneficial technical effects:

[0016] 1. The power-assisting mechanism of the magnetically powered hip disarticulation prosthesis provided by the present invention is based on the principle of magnetic like poles repelling each other. An electromagnetic power-assisting structure is installed on the traditional prosthetic hip joint to provide hip flexion assistance. By achieving time-sharing power assistance through electromagnetics, it can help amputees reduce physical energy consumption.

[0017] 2. The power-assisting mechanism of the magnetically powered hip disarticulation prosthesis provided by the present invention has an ejection support frame whose rotation center coincides with the rotation center of the prosthetic leg tube, which can ensure that the ejection support frame can be adsorbed on the prosthetic leg tube in the power-off state, so that the power-off will not affect the user's normal use.

[0018] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 2. It is a schematic structural diagram of a magnetically powered hip amputation assist mechanism according to an embodiment of the present invention;

[0020] Figure 2 Schematic diagram of the installation of permanent magnets in a magnetically powered hip dislocation and amputation assist mechanism according to an embodiment of the present invention;

[0021] Figure 3Schematic diagram of the installation of the electromagnet of the power-assisting mechanism of the magnetic-powered hip dislocation and amputation according to an embodiment of the present invention;

[0022] Figure 4 Schematic diagram of the bilateral ejection wings of the assisting mechanism of the magnetically powered hip dislocation and amputation according to an embodiment of the present invention;

[0023] Figure 5 Schematic diagram of the rotor joint of the power-assisting mechanism of the magnetic-powered hip dislocation and amputation according to an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the magnetic powered hip amputation assist mechanism of the embodiment of the present invention when taking a step and closing it.

[0025] In the figure, 10-support plate, 20-right auxiliary ejection electromagnet, 30-locking screw, 40-left auxiliary ejection electromagnet, 50-locking bolt, 60-bilateral ejection wing, 61-circular sinking groove, 62-locking shoulder, 63-threaded through hole, 70-prosthetic leg tube, 80-rotor joint, 81-rectangular groove, 82-axis hole, 83-countersunk hole, 84-rectangular connecting wing, 90-ejection fixing frame, 91-opening groove, 100-bolt, 110-bearing screw, 120-ejection support frame, 121-wire groove, 122-opening circular groove, 123-rectangular hollow, 130-pressure sensor, 140-screw, 150-spring damper, 160-fixing seat, 170-circular permanent magnet, 180-countersunk screw. DETAILED DESCRIPTION

[0026] The following describes preferred embodiments of the present invention to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

[0027] In the drawings, components with identical structures are denoted by the same reference numerals, and components with similar structures or functions are denoted by similar reference numerals. The size and thickness of each component shown in the drawings are arbitrary and are not limited by the present invention. For clarity, the thickness of components in some places in the drawings is appropriately exaggerated.

[0028] The present invention provides a power-assisting mechanism for a magnetically powered hip disarticulation prosthesis. By installing an electromagnetic power-assisting mechanism on a traditional prosthesis, power-assisting is achieved during hip flexion, and the power-assisting can be provided in time periods to help amputees reduce physical energy consumption.

[0029] like Figure 1 and Figure 2As shown, the power-assisting structure of the magnetically powered hip disarticulation prosthesis of this embodiment includes a support plate 10, a prosthetic leg tube 70, and an ejection support frame 120. The support plate 10 is approximately L-shaped, i.e., it has a first section and a second section that are not collinear. The first section of the support plate 10 is rotatably connected to the prosthetic leg tube 70 and the ejection support frame 120, respectively. The second section of the support plate 10 is used to support the leg of the amputee, and is then supported on the ground or other places by the prosthetic leg tube 70 to realize the function of the prosthesis. In this embodiment, magnets are respectively provided on the prosthetic leg tube 70 and the ejection support frame 120. The interaction between the magnets realizes power assistance during the hip flexion process; the magnetic field of the magnets is turned on and off to realize time-sharing and segmented power assistance.

[0030] Specifically, a U-shaped mounting base 160 is fixedly connected to the support plate 10. A rotor joint 80 is connected to the mounting base 160 via a pin. The rotor joint 80 is located within the U-shaped groove of the mounting base 160 and is capable of rotating about the pin. The other end of the rotor joint 80 is fixedly connected to the prosthetic leg tube 70, thereby enabling the prosthetic leg tube 70 to rotate relative to the support plate 10.

[0031] like Figure 5 As shown, one end of the rotor joint 80 is a rectangular connecting wing 84 with a countersunk hole 83. A screw 140 is installed in the countersunk hole 83 to connect the prosthetic leg tube 70 to the rotor joint 80. The other end of the rotor joint 80 is provided with a rectangular slot 81 and an axial hole 82. The axial hole 82 connects the rotor joint 80 to the fixing base 160.

[0032] In this embodiment, a spring damper 150 is further provided between the fixing seat 160 and the rotor joint 80 , and the spring damper 150 provides elastic force for the fixing seat 160 and the rotor joint 80 .

[0033] The prosthetic leg tube 70 is connected with a double-sided ejection wing 60, such as Figure 4 As shown, the center of the bilateral ejection wings 60 is a cylindrical structure with a locking shoulder 62 provided on the cylindrical structure. The locking shoulder 62 has a threaded through-hole 63. A locking bolt 50 is installed in the threaded through-hole 63 to tighten the locking shoulder 62, thereby securing the bilateral ejection wings 60 to the prosthetic leg tube 70. Symmetrically distributed circular sunken grooves 61 are provided on either side of the bilateral ejection wings 60. Circular permanent magnets 170 are located in each of the circular sunken grooves 61 to provide magnetic force for the assist mechanism. The circular permanent magnets 170 are connected to the bilateral ejection wings 60 via countersunk screws 180.

[0034] The support plate 10 is also fixedly connected with an ejection fixing frame 90, which is connected to the support plate 10 by a bolt 100. The ejection fixing frame 90 is connected to the ejection support frame 120 by a bearing screw 110, so that the ejection support frame 120 can rotate relative to the support plate 10.

[0035] like Figure 3 As shown, the ejection mount 90 is also approximately U-shaped, with an open slot 91 on one side. The slot 91 allows the ejection mount 90 to be positioned outside the fixing seat 160. The ejection support frame 120 is a zigzag structure, with a rectangular cutout 123 on the side facing the ejection mount 90, two open circular slots 122 on the end facing away from the ejection mount 90, and wire grooves 121 on the side. The open circular slots 122 house the right and left auxiliary ejection electromagnets 20 and 40, respectively. These are symmetrically arranged about the central axis of the prosthetic leg tube 70 and are each mated to two circular permanent magnets 170. The right and left auxiliary ejection electromagnets 20 and 40 are each secured to the ejection support frame 120 via locking screws 30. The width of the rectangular hollow 123 is greater than the outer diameter of the prosthetic leg tube 70 , so that part of the prosthetic leg tube 70 can be accommodated in the rectangular hollow 123 .

[0036] Specifically, when providing hip flexion assistance, the polarity of the right and left auxiliary ejection electromagnets 20 and 40 is opposite to that of the circular permanent magnets 170, achieving assistance through repulsion. By controlling the magnetic properties of the right and left auxiliary ejection electromagnets 20 and 40, assistance is provided in stages, helping amputees reduce energy consumption. When the bilateral ejection wings 60 are in the stance phase, the circular permanent magnets 170 remain parallel to and in contact with the end faces of the right and left auxiliary ejection electromagnets 20 and 40, providing maximum repulsion during ejection and enhancing the assistance effect.

[0037] In this embodiment, the rotation center of the ejection support frame 120 coincides with the rotation center of the prosthetic leg tube 70, ensuring that the ejection support frame 120 can be adsorbed on the prosthetic leg tube 70 in the power-off state, so that the power-off will not affect the user's normal use.

[0038] By providing the wire groove 121, the power wires of the left auxiliary ejection electromagnet 40 and the right auxiliary ejection electromagnet 20 can be accommodated, and the overall weight of the prosthesis can be reduced.

[0039] like Figure 1 As shown, a pressure sensor 130 is also provided on the second section of the support plate 10. The pressure sensor 130 is located on the upper side of the second section, so that it can monitor the pressure applied by the user to the support plate 10. The pressure sensor 130 is electrically connected to the right auxiliary ejection electromagnet 20 and the left auxiliary ejection electromagnet 40, and controls the right auxiliary ejection electromagnet 20 and the left auxiliary ejection electromagnet 40 based on the monitored pressure.

[0040] The specific working mode of the power-assisting mechanism of the magnetic-powered hip disarticulation prosthesis of this embodiment is as follows.

[0041] During the power assist process, the bilateral ejection wings 60 provided on the prosthetic leg tube 70 work in parallel and contact with the left auxiliary ejection electromagnet 40 and the right auxiliary ejection electromagnet 20 provided on the ejection support frame 120, and the pressure sensor 130 provided on the inner side of the bottom of the support plate 10 monitors the pressure of the end of the user's residual limb on the bottom of the support plate 10 in real time. When it is detected that the pressure of the end of the user's residual limb on the bottom of the support plate 10 is zero, the left auxiliary ejection electromagnet 40 and the right auxiliary ejection electromagnet 20 provided at the free end of the ejection support frame 120 are powered on, and the working surface of the electromagnet generates the same polarity as the contact surface of the circular permanent magnet 170. Under the action of the repulsive force, the prosthetic leg tube 70 is ejected, completing an assist.

[0042] During the swinging period, the magnetic power assist is turned off, and the left auxiliary ejection electromagnet 40 and the right auxiliary ejection electromagnet 20 are energized for no more than 0.5 seconds. After completing the hip flexion assist, the prosthetic leg tube 70 swings to the highest position under the action of inertia, and then begins to descend under the action of gravity. The circular permanent magnets 170 arranged on both sides of the bilateral ejection wings 60 gradually approach the left auxiliary ejection electromagnet 40 and the right auxiliary ejection electromagnet 20. At this time, the magnetism of the end faces of the left auxiliary ejection electromagnet 40 and the right auxiliary ejection electromagnet 20 disappears and no repulsive force is generated on the circular permanent magnet 170, ensuring that the prosthetic leg tube 70 is smoothly reset.

[0043] In the power-off or under-powered state, the repulsive force between the magnetic poles is insufficient to achieve the power-assisting effect. At this time, in a gait cycle, the circular permanent magnets 170 arranged on both sides of the bilateral ejection wings 60 during the standing phase contact the working surfaces of the left auxiliary ejection electromagnet 40 and the right auxiliary ejection electromagnet 20 and adsorb the end faces of the electromagnets. The ejection support frame 120 will swing simultaneously with the prosthetic leg tube 70 during the user's leg swinging process, so that the normal use of the prosthesis will not be affected in the event of a power outage.

[0044] In the squatting or sitting state, the power-assist mode is turned off. During the process of changing from a standing position to a sitting or squatting position, the left auxiliary ejection electromagnet 40 and the right auxiliary ejection electromagnet 20 are powered off and do not generate magnetism. Under the action of the circular permanent magnet 170, the ejection support frame 120 bends along with the prosthetic leg tube 70, and the squatting or sitting position change is completed smoothly.

[0045] The preferred embodiments of the present invention have been described in detail above. It should be understood that numerous modifications and variations based on the concepts of the present invention can be made by one of ordinary skill in the art without inventive effort. Therefore, any person skilled in the art can arrive at a solution based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the prior art.

Claims

1. A power-assisting mechanism for a magnetically powered hip disarticulation prosthesis, characterized in that: The present invention comprises a prosthetic leg tube, a support plate, and an ejection support frame, wherein the support plate has a first section and a second section connected to each other, the first section and the second section of the support plate are not collinear, the prosthetic leg tube is rotatably connected to the first section of the support plate, the second section of the support plate is used to support the leg of an amputee, the prosthetic leg tube is located on a side away from the second section of the support plate, the ejection support frame is rotatably connected to the first section of the support plate, a first magnet is provided on the ejection support frame, and a second magnet is provided on the prosthetic leg tube, and the acting force between the first magnet and the second magnet is adjustable; The second magnet is a double-sided ejection wing, and symmetrically distributed sunken grooves are provided on both sides of the double-sided ejection wing, and permanent magnets are provided in the sunken grooves; the first magnet includes a left auxiliary ejection electromagnet and a right auxiliary ejection electromagnet, and the left auxiliary ejection electromagnet and the right auxiliary ejection electromagnet are symmetrically distributed about the central axis of the prosthetic leg tube, and respectively cooperate with the permanent magnets.

2. The power-assisting mechanism of the magnetically powered hip disarticulation prosthesis according to claim 1, characterized in that: It also includes a fixing seat and a rotor joint, wherein the fixing seat is fixedly connected to the first section of the support plate, the first end of the rotor joint is rotatably connected to the fixing seat, and one end of the prosthetic leg tube is fixedly connected to the second end of the rotor joint.

3. The power-assisting mechanism of the magnetically powered hip disarticulation prosthesis according to claim 2, characterized in that: A spring damper is further provided between the rotor joint and the fixing seat, and the spring damper is in contact with the rotor joint and the fixing seat.

4. The power-assisting mechanism of the magnetically powered hip disarticulation prosthesis according to claim 1, characterized in that: The rotation center of the ejection support frame coincides with the rotation center of the prosthetic leg tube.

5. The power-assisting mechanism of the magnetically powered hip disarticulation prosthesis according to claim 1, characterized in that: The cross section of the ejection support frame along the rotation direction is a broken line shape, and the ejection support frame is provided with a rectangular hollow along the rotation direction, and the width of the rectangular hollow is greater than the outer diameter of the prosthetic leg tube.

6. The power-assisting mechanism of the magnetically powered hip disarticulation prosthesis according to claim 5, characterized in that: It also includes an ejection fixing frame, which is fixed to the first section of the support plate. The ejection support frame is connected to the ejection fixing frame through a bearing screw.

7. The power-assisting mechanism of the magnetically powered hip disarticulation prosthesis according to claim 1, characterized in that: The left auxiliary ejection electromagnet and the right auxiliary ejection electromagnet repel each other with the permanent magnet.

8. The power-assisting mechanism of the magnetically powered hip disarticulation prosthesis according to claim 1, characterized in that: A pressure sensor is provided on the second section of the support plate, and the pressure sensor is electrically connected to the left auxiliary ejection electromagnet and the right auxiliary ejection electromagnet.

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