Fixing device of knee joint brace

Abstract

The utility model is applicable to the technical field of knee joint braces, and provides a knee joint brace fixing device which comprises two rotatably connected connectors, first mounting plates are arranged on the opposite sides of the two connectors, and second mounting plates are arranged on the sides, away from the connectors, of the first mounting plates. Binding bandages are arranged on the outer surfaces of the first mounting plate and the second mounting plate, an adjusting shell is arranged between the first mounting plate and the second mounting plate, extension plates are arranged on the sides, close to the adjusting shell, of the first mounting plate and the second mounting plate, and the interior of the adjusting shell is hollow; the adjacent sides of the two extension plates slidably penetrate into the adjusting shell, a rotating shaft is arranged on the outer surface of the adjusting shell, one end of the rotating shaft rotatably penetrates into the adjusting shell, and the knee joint brace can be conveniently fixed to the legs of different patients, so that the knee joint brace better fits the legs of the different patients, and the knee joint brace is more convenient to use. And the use effect of the knee joint brace is further improved.

Description

Technical Field

[0001] This utility model relates to the field of knee joint brace technology, and more specifically, it relates to a fixation device for a knee joint brace. Background Technology

[0002] Knee braces belong to the category of rehabilitation braces. To prevent patients after knee surgery from wearing heavy and non-breathable casts, a knee brace specifically designed for post-operative knee patients is called a multi-angle adjustable knee brace.

[0003] Currently, knee braces are typically secured to the patient's leg with bandages to provide support and restraint. However, most patients have legs of varying lengths, while the support plates on most knee braces are of fixed length. This results in inconsistent binding positions on each patient's leg, leading to variations in the support provided by the knee brace and affecting its overall effectiveness. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a fixation device for a knee joint brace.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A fixation device for a knee joint brace includes two rotatably connected connectors. A first mounting plate is provided on opposite sides of each connector, and a second mounting plate is provided on the side of the first mounting plate away from the connector. A binding bandage is provided on the outer surface of both the first and second mounting plates. An adjustment housing is provided between the first and second mounting plates. An extension plate is provided on the side of both the first and second mounting plates closest to the adjustment housing. The adjustment housing is hollow. The adjacent sides of the two extension plates slide through the adjustment housing. A rotating shaft is provided on the outer surface of the adjustment housing. One end of the rotating shaft rotatably passes through the adjustment housing and is located between the two extension plates. A gear is sleeved on the outer surface of the end of the rotating shaft inside the adjustment housing. Two mirror-image racks are provided on the adjacent side surfaces of the two extension plates. The two racks are respectively located on both sides of the gear and are meshed with the gear. A limiting structure is provided at the end of the rotating shaft outside the adjustment housing.

[0007] The present invention is further configured such that: the limiting structure includes an outer cover, which is slidably sleeved on the outer surface of the end of the rotating shaft located outside the adjusting housing; a square rod is provided on the inner wall of the right side of the outer cover; a contraction cavity is opened inside the end of the rotating shaft located outside the adjusting housing; the end of the square rod away from the outer cover slides through into the contraction cavity; an internal baffle that slides inside the contraction cavity is provided at the end of the square rod located inside the contraction cavity; a tension spring is provided between the side surface of the internal baffle facing away from the square rod and the inner wall of the contraction cavity.

[0008] The present invention is further configured such that: the outer surface of the adjusting housing is provided with a plurality of limiting grooves arranged in a circular array with the rotation axis as the center, and the surface of the outer cover near the limiting grooves is provided with a plurality of limiting rods adapted to the limiting grooves.

[0009] The present invention is further configured such that: two rotating seats arranged in parallel are provided on the side surface of the first mounting plate and the second mounting plate near the adjusting housing; an extension plate is located between the two rotating seats; a movable shaft is provided on the surface of the extension plate near the rotating seats; and the other end of the movable shaft is rotatably connected to the rotating seats.

[0010] The present invention is further configured such that: the interior of the rotating seat on one side is hollow, and one end of the movable shaft near the hollow rotating seat rotatably penetrates into the rotating seat; a worm gear is provided at one end of the movable shaft located inside the rotating seat; a drive rod is provided on the outer surface of the rotating seat; one end of the drive rod rotatably penetrates into the rotating seat and is rotatably connected to the inner wall of the rotating seat; and a worm gear that meshes with the worm gear is sleeved at one end of the drive rod located inside the rotating seat.

[0011] The present invention is further configured such that: a storage groove adapted to the rack is provided on the opposite surfaces of the two extension plates, and the rack slides in the storage groove.

[0012] The advantages of this utility model are:

[0013] Firstly, the distance between the first mounting plate and the second mounting plate can be adjusted, and the position of the binding straps on the first mounting plate and the second mounting plate can also be adjusted. Therefore, it is convenient to fix the knee joint brace to the legs of different patients, so that the knee joint brace fits the legs of different patients better and further improves the use effect of the knee joint brace.

[0014] Secondly, the first mounting plate and the second mounting plate in this utility model can rotate slightly. When the bandage is tightened and installed on the patient's leg, the first mounting plate and the second mounting plate can fit the patient's leg better, further ensuring the fixation effect of the knee joint brace. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the fixation device for a knee joint brace according to the present invention;

[0016] Figure 2 This is a side plan view of the adjusting housing of this utility model;

[0017] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0018] Figure 4 This is a cross-sectional schematic diagram of the rotating seat of this utility model.

[0019] In the diagram: 1. Connector; 2. First mounting plate; 3. Second mounting plate; 4. Tightening strap; 5. Adjusting housing; 6. Extension plate; 7. Rotating seat; 8. Rotating shaft; 9. Gear; 10. Rack; 11. Storage slot; 12. External cover; 13. Square rod; 14. Shrinkage chamber; 15. Internal baffle; 16. Tension spring; 17. Limiting slot; 18. Limiting rod; 19. Movable shaft; 20. Worm gear; 21. Drive rod; 22. Worm. Detailed Implementation

[0020] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] Please see Figure 1-4 The present invention provides the following technical solution:

[0023] Specifically, it refers to a fixation device for a knee joint brace, including two rotatably connected connectors 1. A first mounting plate 2 is provided on the opposite side of the two connectors 1, and a second mounting plate 3 is provided on the side of the first mounting plate 2 away from the connectors 1. The outer surfaces of the first mounting plate 2 and the second mounting plate 3 are provided with tightening bandages 4. In use, the knee joint brace is fixed to the patient's lower leg and thigh by tightening the bandages 4, thereby completing the support of the patient's leg.

[0024] An adjusting housing 5 is provided between the first mounting plate 2 and the second mounting plate 3. An extension plate 6 is provided on the side of both the first mounting plate 2 and the second mounting plate 3 closest to the adjusting housing 5. The adjusting housing 5 is hollow. The two extension plates 6 slide through each other on adjacent sides. A rotating shaft 8 is provided on the outer surface of the adjusting housing 5. One end of the rotating shaft 8 rotates through the adjusting housing 5 and is located between the two extension plates 6. A gear 9 is fitted on the outer surface of the end of the rotating shaft 8 inside the adjusting housing 5. Two mirror-shaped racks 10 are provided on the adjacent surfaces of the two extension plates 6. The two racks 10 are respectively equipped with… On both sides of gear 9, and meshing with gear 9, when the knee brace is installed on the legs of different patients, by rotating the rotating shaft 8, gear 9 rotates synchronously with the rotating shaft 8, driving the two racks 10 to move in opposite or opposite directions. Therefore, the distance between the first mounting plate 2 and the second mounting plate 3 can be adjusted. At the same time, the position of the binding bandage 4 on the first mounting plate 2 and the second mounting plate 3 can also be adjusted. Therefore, it is convenient to fix the knee brace on the legs of different patients, so that the knee brace fits the legs of different patients better and further improves the use effect of the knee brace.

[0025] Each of the two extension plates 6 has a storage groove 11 that is adapted to the rack 10 on its opposite surface. The rack 10 slides in the storage groove 11. When the two extension plates 6 are close to each other, the rack 10 retracts into the storage groove 11. This method reduces the storage area of ​​the rack 10 and reduces the overall length of the adjustment housing 5.

[0026] An outer cover 12 is slidably fitted on the outer surface of one end of the rotating shaft 8 outside the adjusting housing 5. A square rod 13 is provided on the inner wall of the right side of the outer cover 12. A contraction cavity 14 is opened inside the one end of the rotating shaft 8 outside the adjusting housing 5. The end of the square rod 13 away from the outer cover 12 slides into the contraction cavity 14. An inner baffle 15 is provided at the one end of the square rod 13 inside the contraction cavity 14, which slides inside the contraction cavity 14. A tension spring 16 is provided between the side surface of the inner baffle 15 facing away from the square rod 13 and the inner wall of the contraction cavity 14. When the tension spring 16 is not affected by tension, the tension spring 16 will exert tension on the inner baffle 15, so that the left side surface of the outer cover 12 contacts the outer surface of the adjusting housing 5.

[0027] The outer surface of the adjusting housing 5 is provided with multiple limiting grooves 17 arranged in a circular array around the rotating shaft 8. The outer cover 12 is provided with multiple limiting rods 18 that are adapted to the limiting grooves 17 on its surface near the limiting grooves 17. When the limiting rods 18 are inserted into the limiting grooves 17, the limiting rods 18 can restrict the outer cover 12, thus preventing the rotating shaft 8 from rotating. This method avoids the problem of the extension plate 6 becoming loose after adjustment, further ensuring the firmness of the knee joint brace after installation. When it is necessary to adjust the position of the tension bandage 4, the outer cover 12 is pulled outward, causing the limiting rods 18 to move out of the limiting grooves 17. At the same time, the inner baffle 15 pulls the tension spring 16, causing the tension spring 16 to be stressed and stretched. At this time, the outer cover 12 can be rotated. Due to the restriction of the square rod 13, the rotating shaft 8 will rotate synchronously with the outer cover 12.

[0028] On the side surface of the first mounting plate 2 and the second mounting plate 3 near the adjusting housing 5, there are two parallel rotating seats 7. The extension plate 6 is located between the two rotating seats 7. The surface of the extension plate 6 near the rotating seats 7 is provided with a movable shaft 19. The other end of the movable shaft 19 is rotatably connected to the rotating seats 7, so that the first mounting plate 2 and the second mounting plate 3 can rotate slightly. When the bandage 4 is tightened and installed on the patient's leg, the first mounting plate 2 and the second mounting plate 3 can better fit the patient's leg, further ensuring the fixation effect of the knee joint brace.

[0029] The interior of one side of the rotating seat 7 is hollow. One end of the movable shaft 19, near the hollow rotating seat 7, rotates through the rotating seat 7. A worm gear 20 is provided at the end of the movable shaft 19 inside the rotating seat 7. A drive rod 21 is provided on the outer surface of the rotating seat 7. One end of the drive rod 21 rotates through the rotating seat 7 and is rotatably connected to the inner wall of the rotating seat 7. A worm 22, which meshes with the worm gear 20, is sleeved at the end of the drive rod 21 inside the rotating seat 7. In use, by controlling the rotation of the drive rod 21, the worm 22 rotates synchronously with the drive rod 21. At this time, the worm 22 meshes with and drives the worm gear 20 to rotate. Therefore, the movable shaft 19 can drive the first mounting plate 2 and the second mounting plate 3 to rotate. At the same time, the worm gear has a self-locking effect, so there will be no loosening problem after the first mounting plate 2 or the second mounting plate 3 is finely adjusted, ensuring the firmness of the knee joint brace after installation.

[0030] The working principle of the fixation device of the knee joint brace provided by this utility model is as follows: When it is necessary to adjust the position of the binding bandage 4, the outer cover 12 is pulled outward, so that the limiting rod 18 is displaced out of the limiting groove 17. At the same time, the inner baffle 15 pulls the tension spring 16, so that the tension spring 16 is stressed and stretched. At this time, the outer cover 12 can be rotated. Due to the restriction of the square rod 13, the rotating shaft 8 will rotate synchronously with the outer cover 12. The gear 9 rotates synchronously with the rotating shaft 8, driving the two racks 10 to move in opposite directions or in opposite directions. Therefore, the distance between the first mounting plate 2 and the second mounting plate 3 can be adjusted. At the same time, the position of the binding bandage 4 on the first mounting plate 2 and the second mounting plate 3 can also be adjusted.

[0031] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A fixation device for a knee joint brace, comprising two rotatably connected connectors (1), each connector (1) having a first mounting plate (2) on an opposite side, and a second mounting plate (3) on the side of the first mounting plate (2) away from the connectors (1), and both the first mounting plate (2) and the second mounting plate (3) having a binding bandage (4) on their outer surfaces, characterized in that: An adjustment housing (5) is provided between the first mounting plate (2) and the second mounting plate (3). An extension plate (6) is provided on the side of the first mounting plate (2) and the second mounting plate (3) near the adjustment housing (5). The interior of the adjustment housing (5) is hollow. The two extension plates (6) slide through the adjustment housing (5) on their adjacent sides. A rotating shaft (8) is provided on the outer surface of the adjustment housing (5). One end of the rotating shaft (8) rotates through the adjustment housing (5) and is located between the two extension plates (6). A gear (9) is sleeved on the outer surface of the end of the rotating shaft (8) inside the adjustment housing (5). Two racks (10) are provided on the adjacent side surfaces of the two extension plates (6). The two racks (10) are respectively located on both sides of the gear (9) and are meshed with the gear (9). A limiting structure is provided on the end of the rotating shaft (8) outside the adjustment housing (5).

2. The fixation device for a knee joint brace according to claim 1, characterized in that: The limiting structure includes an outer cover (12), which is slidably sleeved on the outer surface of the end of the rotating shaft (8) located outside the adjusting housing (5). A square rod (13) is provided on the inner wall of the right side of the outer cover (12). A contraction cavity (14) is opened inside the end of the rotating shaft (8) located outside the adjusting housing (5). The end of the square rod (13) away from the outer cover (12) slides through into the contraction cavity (14).

3. The fixation device for a knee joint brace according to claim 2, characterized in that: The square rod (13) is provided with an internal baffle (15) that slides inside the contraction cavity (14) at one end. A tension spring (16) is provided between the side surface of the internal baffle (15) facing away from the square rod (13) and the inner wall of the contraction cavity (14).

4. The fixation device for a knee joint brace according to claim 3, characterized in that: The outer surface of the adjusting housing (5) is provided with a plurality of limiting grooves (17) arranged in a circular array with the rotating shaft (8) as the center, and the outer cover (12) is provided with a plurality of limiting rods (18) that are adapted to the limiting grooves (17) on its surface.

5. The fixation device for a knee joint brace according to claim 4, characterized in that: The first mounting plate (2) and the second mounting plate (3) are each provided with two rotating seats (7) arranged in parallel on the side surface of the adjusting housing (5). The extension plate (6) is located between the two rotating seats (7). The surface of the extension plate (6) near the rotating seats (7) is provided with a movable shaft (19). The other end of the movable shaft (19) is rotatably connected to the rotating seat (7).

6. The fixation device for a knee joint brace according to claim 5, characterized in that: The interior of the rotating seat (7) on one side is hollow. One end of the movable shaft (19) near the hollow rotating seat (7) is rotatably inserted into the rotating seat (7). A worm gear (20) is provided at one end of the movable shaft (19) inside the rotating seat (7). A drive rod (21) is provided on the outer surface of the rotating seat (7). One end of the drive rod (21) is rotatably inserted into the rotating seat (7) and rotatably connected to the inner wall of the rotating seat (7). A worm (22) that meshes with the worm gear (20) is sleeved at one end of the drive rod (21) inside the rotating seat (7).

7. The fixation device for a knee joint brace according to claim 6, characterized in that: Each of the two extension plates (6) has a storage groove (11) adapted to the rack (10) on its opposite surface, and the rack (10) slides in the storage groove (11).

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