A walking assist device for patients with foot and ankle injuries

Abstract

The present invention discloses a walking assist device for patients with foot and ankle injuries, comprising: a shell, which is composed of a leg support part and a foot support part; a pressure plate, which is composed of a vertical plate and a horizontal plate, and the vertical plate is detachably connected to the leg support part; wherein, after the pressure plate is installed on the shell, the vertical plate corresponds to the front of the patient's legs, the horizontal plate corresponds to the patient's feet, the vertical plate and the horizontal plate are rotatably connected, and there is at least one traction line between the vertical plate and the horizontal plate, and the length of the traction line controls the maximum angle of rotation between the vertical plate and the horizontal plate. The present invention adopts the setting of the traction line and controls the maximum angle of rotation of the horizontal plate relative to the vertical plate according to the length of the traction line, thereby overcoming the problem that the existing walking assist device cannot constrain the flexion and extension range of the ankle, thereby effectively preventing the secondary aggravation of the toe flexion injury and achieving a protective effect.

Description

Technical Field

[0001] The invention relates to the technical field of bone orthopedic appliances, and in particular to a walking assist device for patients with foot and ankle injuries. Background Art

[0002] The human ankle joint is composed of the tibia, distal fibula and talus. Among all sports injuries, ankle injuries account for a relatively high proportion. Fractures, congestion, tendon injuries, etc. may occur at the ankle, which requires a certain amount of recovery time. During the recovery period, the ankle cannot rotate or apply too much force. When walking is necessary, corresponding auxiliary support walking devices are needed. They mainly clamp and protect both sides of the ankle, and have auxiliary protection functions for inversion and eversion injuries of the ankle. However, they cannot provide effective protection for patients with toe flexion injuries. The flexion and extension range of the ankle cannot be restrained during the patient's walking, which can easily cause secondary aggravation of the toe flexion injury, and the protection effect is insufficient. Summary of the invention

[0003] The purpose of the present invention is to provide a walking assist device for patients with ankle injuries, which can restrict the flexion and extension range of the ankle and prevent secondary aggravation of toe flexion injuries.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A walking assist device for patients with foot and ankle injuries, comprising:

[0006] The outer shell is composed of a leg support portion and a foot support portion;

[0007] The pressure plate is composed of a vertical plate and a horizontal plate, and the vertical plate is detachably connected to the leg support part;

[0008] Among them, after the pressure plate is installed on the shell, the vertical plate corresponds to the front of the patient's legs, the horizontal plate corresponds to the patient's feet, the vertical plate and the horizontal plate are rotationally connected, and there is at least one traction line between the vertical plate and the horizontal plate. The length of the traction line controls the maximum angle of rotation between the vertical plate and the horizontal plate.

[0009] Preferably, the leg supporting part is provided with multiple groups of first fixing parts and multiple groups of second fixing parts, the first fixing part includes two upper and lower arranged arc-shaped plates, the arc-shaped plates are provided with fixing holes, the two fixing holes are slidably connected to the same buckle, the second fixing part includes a fastening belt and a mounting nail, the mounting nail nails one end of the fastening belt to the leg supporting part, the other end of the fastening belt is a free end, one side of the fastening belt has front and back sides of Velcro, the vertical plate is fixed with multiple groups of U-shaped plates, the free end of the fastening belt passes through the U-shaped plate in turn, the buckle is pulled in reverse, and the front and back sides of the Velcro on the fastening belt are bonded to each other to complete the fixation of the pressure plate.

[0010] Preferably, a bent plate is arranged between the vertical plate and the horizontal plate, and the bent plate has a horizontal surface and a vertical surface, the horizontal surface corresponds to the vertical plate, and the vertical surface corresponds to the horizontal plate, and the bent plate is rotatably connected to the vertical plate and the horizontal plate respectively, wherein the maximum angle between the vertical plate and the horizontal plate is 90°, and the horizontal surface and the vertical surface of the bent plate are fixedly connected to the rotating plate, and the rotating plate is rotatably connected to the vertical plate and the horizontal plate respectively.

[0011] Preferably, at least one circular groove is opened inside the vertical plate, the traction line part is located inside the circular groove, one end of the traction line passes through the circular groove and extends straight to the outside and is fixedly connected to the counterweight block, and the other end of the traction line passes through the vertical plate and the curved plate and is connected to the horizontal plate.

[0012] Preferably, an adjustment groove is provided in the vertical plate, and two adjustment plates are arranged in the adjustment groove. Multiple grooves are provided on opposite sides of the adjustment plates. A sliding adjustment cylinder is provided between the two adjustment plates. The corresponding two grooves cooperate to engage the adjustment cylinder. Multiple compression springs are also provided in the adjustment groove. The two ends of the compression springs are respectively connected to the adjustment groove and the adjustment plate, so that the two adjustment plates are tightly in contact with each other, and the traction line passes through the adjustment cylinder and is connected to the counterweight block.

[0013] Preferably, the vertical plate is provided with a limit groove, a limit block is slidably connected in the limit groove, the limit block is fixedly connected to the adjustment plate, and both ends of the adjustment cylinder are fixedly sleeved with limit rings to limit the adjustment cylinder so that it always remains between the two adjustment plates.

[0014] Preferably, the traction line is cut off and a magnetic block is arranged at the cutoff point. The magnetic block has two magnetic poles, N and S. One magnetic pole of the magnetic block is connected to an external counterweight block through a part of the traction line, and the other magnetic pole of the magnetic block is connected to the cross plate through another part of the traction line. A winding coil is also fixedly arranged inside the circular groove. The winding coil is connected end to end to form a closed loop, and the winding coil is located below the magnetic block.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention adopts the setting of a traction line and controls the maximum rotation angle between the horizontal board and the vertical board according to the length of the traction line, thereby overcoming the problem that the existing walking assistance device cannot restrict the flexion and extension range of the ankle, thereby effectively preventing the secondary aggravation of the toe flexion injury and achieving a protective effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a walking assistance device for patients with foot and ankle injuries proposed by the present invention;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective;

[0019] Figure 3This is a schematic structural diagram of a vertical plate, a curved plate and a horizontal plate in a walking assist device for patients with foot and ankle injuries proposed by the present invention;

[0020] Figure 4 for Figure 3 Schematic diagram of the cross-section structure;

[0021] Figure 5 for Figure 4 A schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 6 This is a schematic diagram of the structural decomposition of an adjustment plate and an adjustment slot in a walking assistance device for patients with foot and ankle injuries proposed by the present invention;

[0023] Figure 7 This is a schematic structural diagram of an arc-shaped plate, a fixing hole and a buckle in a walking assist device for patients with foot and ankle injuries proposed by the present invention;

[0024] Figure 8 This is a schematic structural diagram of a bending plate and a rotating plate in a walking assist device for patients with foot and ankle injuries proposed by the present invention;

[0025] Fig. 9 This is a schematic diagram of the structure inside a circular groove in a walking assistance device for patients with foot and ankle injuries proposed by the present invention.

[0026] In the figure: 1. leg supporting part; 2. foot supporting part; 3. vertical plate; 4. horizontal plate; 5. arc plate; 6. fixing hole; 7. buckle; 8. fastening belt; 9. mounting nail; 10. U-shaped plate; 11. bending plate; 12. rotating plate; 13. circular groove; 14. traction line; 15. counterweight block; 16. adjustment groove; 17. adjustment plate; 18. groove; 19. adjustment cylinder; 20. compression spring; 21. limit groove; 22. limit block; 23. limit ring; 24. magnetic block; 25. winding coil; 26. elastic belt. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] Reference Figure 1 -Attached Fig. 9 , a walking assist device for patients with foot and ankle injuries, comprising:

[0029] The outer shell is composed of a leg support part 1 and a foot support part 2;

[0030] The pressing plate is composed of a vertical plate 3 and a horizontal plate 4, and the vertical plate 3 is detachably connected to the leg supporting part 1;

[0031] Among them, after the pressure plate is installed on the shell, the vertical plate 3 corresponds to the front of the patient's legs, and the horizontal plate 4 corresponds to the patient's feet. The vertical plate 3 and the horizontal plate 4 are rotationally connected. There is at least one traction line 14 between the vertical plate 3 and the horizontal plate 4. The length of the traction line 14 controls the maximum angle of rotation between the vertical plate 3 and the horizontal plate 4.

[0032] Through the above technical scheme, the traction line 14 is set and the maximum rotation angle between the horizontal board 4 and the vertical board 3 is controlled according to the length of the traction line 14, thereby overcoming the problem that the existing walking assist device cannot restrict the flexion and extension range of the ankle, thereby effectively preventing the secondary aggravation of the toe flexion injury and achieving a protective effect.

[0033] The outer shell is made of soft PVC, which is soft and elastic. A layer of suitable soft padding can also be laid inside the outer shell to make the patient's legs and feet more comfortable when wearing it. The horizontal board 4 has an elastic belt 26. The patient's foot passes through the elastic belt 26 so that the foot is located between the elastic belt 26 and the horizontal board 4, so that the flexion and extension of the patient's ankle will drive the horizontal board 4 to flip synchronously.

[0034] The leg support part 1 is provided with multiple groups of first fixing parts and multiple groups of second fixing parts. The first fixing part includes two upper and lower arranged arc plates 5. The arc plate 5 has a fixing hole 6. The two fixing holes 6 are slidably connected to the same buckle 7. The second fixing part includes a fastening belt 8 and a mounting nail 9. The mounting nail 9 nails one end of the fastening belt 8 to the leg support part 1, and the other end of the fastening belt 8 is a free end. One side of the fastening belt 8 has a front and back side of Velcro. The vertical plate 3 is fixed with multiple groups of U-shaped plates 10. The free end of the fastening belt 8 passes through the U-shaped plate 10 in turn, and the buckle 7 is pulled in reverse to make the front and back sides of the Velcro on the fastening belt 8 adhere to each other to complete the fixation of the pressure plate.

[0035] Through the above technical solution, the shell and the pressure plate can be installed together on the patient's legs and feet.

[0036] A bent plate 11 is arranged between the vertical plate 3 and the horizontal plate 4. The bent plate 11 has a horizontal surface and a vertical surface. The horizontal surface corresponds to the vertical plate 3, and the vertical surface corresponds to the horizontal plate 4. The bent plate 11 is rotatably connected to the vertical plate 3 and the horizontal plate 4, respectively. The maximum angle between the vertical plate 3 and the horizontal plate 4 is 90°. The horizontal and vertical surfaces of the bent plate 11 are fixedly connected to the rotating plate 12, and the rotating plate 12 is rotatably connected to the vertical plate 3 and the horizontal plate 4, respectively.

[0037] At least one circular groove 13 is opened inside the vertical plate 3, and the traction line 14 is partially located inside the circular groove 13. One end of the traction line 14 passes through the circular groove 13 and extends straight to the outside and is fixedly connected to the counterweight block 15. The other end of the traction line 14 passes through the vertical plate 3 and the curved plate 11 and is connected to the horizontal plate 4.

[0038] Through the above technical solution, when walking, the ankle flexes, which drives the cross plate 4 to flip up, pulling the traction line 14, thereby driving the counterweight block 15 to move up, until the counterweight block 15 moves to the highest point, the cross plate 4 can no longer flip up, so as to limit the flexion range of the ankle.

[0039] For patients with different degrees of toe flexion injury, an adjustable plan is made to limit the flexion range of the ankle, specifically:

[0040] An adjustment groove 16 is provided on the vertical plate 3, and two adjustment plates 17 are arranged in the adjustment groove 16. Multiple grooves 18 are provided on the opposite sides of the adjustment plates 17. A sliding adjustment cylinder 19 is provided between the two adjustment plates 17. The corresponding two grooves 18 cooperate to engage the adjustment cylinder 19. Multiple compression springs 20 are also provided in the adjustment groove 16. The two ends of the compression spring 20 are respectively connected to the adjustment groove 16 and the adjustment plate 17 to make the two adjustment plates 17 tightly contact each other. The traction line 14 passes through the adjustment cylinder 19 and is connected to the counterweight block 15.

[0041] The vertical plate 3 is provided with a limit groove 21, and a limit block 22 is slidably connected in the limit groove 21. The limit block 22 is fixedly connected to the adjustment plate 17. Both ends of the adjustment cylinder 19 are fixedly sleeved with limit rings 23 to limit the adjustment cylinder 19 so that it always remains between the two adjustment plates 17.

[0042] Through the above technical solution, by controlling the adjustment cylinder 19 inside the groove 18 at different heights, the length of the traction line 14 inside the circular groove 13 is controlled, thereby achieving the ability to adjust the angle range after rotation between the horizontal plate 4 and the vertical plate 3, specifically, acting on the inner wall of the groove 18 without the adjustment cylinder 19 to move the two adjustment plates 17 in opposite directions.

[0043] The traction line 14 is cut off, and a magnetic block 24 is set at the cut-off point. The magnetic block 24 has two magnetic poles, N and S. One magnetic pole of the magnetic block 24 is connected to the external counterweight block 15 through a part of the traction line 14, and the other magnetic pole of the magnetic block 24 is connected to the cross plate 4 through another part of the traction line 14. A winding coil 25 is also fixedly set inside the circular groove 13. The winding coil 25 is connected end to end to form a closed loop. The winding coil 25 is located below the magnetic block 24.

[0044] Through the above technical scheme, when the ankle is flexed, the horizontal plate 4 is driven to flip up, pulling the traction line 14, thereby driving the magnetic block 24 to move down toward the winding coil 25, the magnetic flux increases, and the winding coil 25 forms a force that hinders the change of magnetic flux to prevent the magnetic block 24 from approaching. Similarly, when the ankle is flexed and extended, the pulling of the traction line 14 is cancelled, and the gravity of the counterweight block 15 drives the magnetic block 24 to move up and away from the winding coil 25, the magnetic flux decreases, and the winding coil 25 forms a force that hinders the change of magnetic flux to prevent the magnetic block 24 from moving away. Each flexion and extension of the patient's ankle will be continuously hindered, preventing the patient from applying too much force to the ankle, causing the ankle to flex and extend too quickly, thereby playing a protective role.

[0045] The inventive concept of the present application is:

[0046] In view of the problem that the existing walking assist devices that can fix the patient's ankles on both sides for clamping and protection lack the flexion and extension range of the patient's ankles during walking, the present application provides a vertical plate 3 that fits the front of the patient's calf and a horizontal plate 4 that fits the patient's instep. The rotational connection between the vertical plate 3 and the horizontal plate 4 allows the patient's ankles to flex and extend. At the same time, a traction line 14 of a fixed length is provided between the vertical plate 3 and the horizontal plate 4, and the length of the traction line 14 will limit the flipping angle of the horizontal plate 4, thereby realizing the flexion and extension range of the patient's ankles.

[0047] By setting a counterweight block 15 on the outside, the traction line 14 is always in a taut state, and the height of the counterweight block 15 connected to the traction line 14 and passing through the vertical plate 3 can be adjusted. When the length of the traction line 14 is fixed, the flipping range of the horizontal plate 4 can still be adaptively adjusted to meet the wider usage needs of more patients.

[0048] In order to prevent the patient from applying excessive force when flexing or extending the ankle when walking, a magnetic block 24 is provided on the traction line 14 and moves synchronously with the traction line 14 in the same direction. At the same time, a winding coil 25 connected at both ends to form a closed loop is provided under the magnetic block 24. No matter whether the magnetic block 24 is close to or far away from the winding coil 25, according to Lenz's law, the winding coil 25 will always form a force that hinders the movement of the magnetic block 24, and this force serves as a resisting force to the flexion and extension of the ankle every time the patient walks.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A walking assist device for patients with foot and ankle injuries, characterized in that: include: The outer shell is composed of a leg support part (1) and a foot support part (2); A pressure plate, comprising a vertical plate (3) and a horizontal plate (4), wherein the vertical plate (3) is detachably connected to the leg support portion (1); Wherein, after the pressing plate is mounted on the housing, the vertical plate (3) corresponds to the front of the patient's legs, the horizontal plate (4) corresponds to the patient's feet, the vertical plate (3) and the horizontal plate (4) are rotatably connected, and at least one traction line (14) is provided between the vertical plate (3) and the horizontal plate (4), and the length of the traction line (14) controls the maximum angle of rotation between the vertical plate (3) and the horizontal plate (4); At least one circular groove (13) is provided inside the vertical plate (3), a traction line (14) is partially located inside the circular groove (13), one end of the traction line (14) passes through the circular groove (13) and extends to the outside and is fixedly connected to a counterweight (15), and the other end of the traction line (14) passes through the vertical plate (3) and the curved plate (11) and is connected to the horizontal plate (4); The vertical plate (3) is provided with an adjustment groove (16), two adjustment plates (17) are arranged in the adjustment groove (16), a plurality of grooves (18) are arranged on opposite sides of the adjustment plates (17), a sliding adjustment cylinder (19) is arranged between the two adjustment plates (17), the two corresponding grooves (18) cooperate to engage the adjustment cylinder (19), a plurality of compression springs (20) are also arranged in the adjustment groove (16), two ends of the compression spring (20) are respectively connected to the adjustment groove (16) and the adjustment plate (17), so that the two adjustment plates (17) are closely contacted with each other, and the traction line (14) passes through the adjustment cylinder (19) and is connected to the counterweight (15); The vertical plate (3) is provided with a limiting groove (21), a limiting block (22) is slidably connected in the limiting groove (21), the limiting block (22) is fixedly connected to the adjustment plate (17), and both ends of the adjustment cylinder (19) are fixedly sleeved with limiting rings (23) for limiting the adjustment cylinder (19) so that it is always kept between the two adjustment plates (17).

2. A walking assist device for patients with foot and ankle injuries according to claim 1, characterized in that: The leg support part (1) is provided with a plurality of first fixing parts and a plurality of second fixing parts. The first fixing part comprises two upper and lower arc-shaped plates (5). The arc-shaped plates (5) are provided with fixing holes (6). The two fixing holes (6) are slidably connected to the same buckle (7). The second fixing part comprises a fastening belt (8) and a mounting nail (9). The mounting nail (9) is used to nail one end of the fastening belt (8) to the leg support part (1). The other end of the fastening belt (8) is a free end. One side of the fastening belt (8) has a front and a back side of a Velcro. The vertical plate (3) is fixed with a plurality of U-shaped plates (10). The free ends of the fastening belt (8) pass through the U-shaped plates (10) in sequence. The buckle (7) is pulled in the opposite direction so that the front and back sides of the Velcro on the fastening belt (8) are bonded to each other to complete the fixing of the pressure plate.

3. A walking assist device for patients with foot and ankle injuries according to claim 1, characterized in that: A bent plate (11) is arranged between the vertical plate (3) and the horizontal plate (4). The bent plate (11) has a horizontal surface and a vertical surface. The horizontal surface corresponds to the vertical plate (3), and the vertical surface corresponds to the horizontal plate (4). The bent plate (11) is rotatably connected to the vertical plate (3) and the horizontal plate (4), respectively. The maximum angle between the vertical plate (3) and the horizontal plate (4) is 90 degrees. The horizontal surface and the vertical surface of the bent plate (11) are fixedly connected to the rotating plate (12). The rotating plate (12) is rotatably connected to the vertical plate (3) and the horizontal plate (4).

4. A walking assist device for patients with foot and ankle injuries according to claim 1, characterized in that: The traction line (14) is cut off, and a magnetic block (24) is arranged at the cut-off point. The magnetic block (24) has two magnetic poles, N and S. One magnetic pole of the magnetic block (24) is connected to an external counterweight block (15) through a portion of the traction line (14), and the other magnetic pole of the magnetic block (24) is connected to the horizontal plate (4) through another portion of the traction line (14). A winding coil (25) is also fixedly arranged inside the circular groove (13). The winding coil (25) is connected end to end to form a closed loop. The winding coil (25) is located below the magnetic block (24).

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