Knee joint fixing brace for rehabilitation

Abstract

The utility model relates to knee joint protection technical field, especially a kind of knee joint fixing brace for rehabilitation, it includes two groups of oppositely arranged clamping arm, chuck, adjusting assembly, angle limiting assembly, T-shaped plate and restraint component. Clamping arm includes main arm and auxiliary arm, fixed ring is set on main arm, fixed ring coaxially rotates and sets hollow shaft, auxiliary arm is connected with hollow shaft, and hollow shaft is slidably arranged slide rod, chuck is rotatably connected with the end of slide rod that protrudes from hollow shaft;Adjusting assembly is set on hollow shaft and drives slide rod to slide along its radial direction;Angle limiting assembly is set on fixed ring, to limit the deflection angle range of auxiliary arm and main arm by angle limiting assembly;Two groups of T-shaped plate are slidably connected with main arm and auxiliary arm respectively, and telescopic limiting piece is set on T-shaped plate;Restraint component connects clamping arm and T-shaped plate on both sides.The utility model is simple in dismounting operation, and chuck spacing is adjustable, and the deflection angle range of main arm auxiliary arm is adjusted conveniently.

Description

Technical Field

[0001] This utility model relates to the field of knee joint protection technology, and in particular to a knee joint fixation brace for rehabilitation. Background Technology

[0002] For patients recovering from knee surgery, knee braces can help restore joint range of motion and promote muscle strength recovery. They can also reduce postoperative complications and improve rehabilitation outcomes. However, existing knee fixation braces are too simple in design and lack adjustability, requiring improvement.

[0003] The technical solution disclosed in Chinese Patent No. CN222172413U involves the leg passing through the overall device and adapting to the bending of the knee joint. The positioning disc is aligned with the center of the patella of the knee joint. The position of the secondary protective pad, the main protective pad, and the leg is adjusted by rotating the disc to stretch and adjust the position. The main protective pad is kept about two fingers' width away from the leg for normal use without causing excessive pressure on the leg. When the leg is kept vertical, the measuring tape structure inside the rotating disc retracts, causing the locking teeth to engage and maintain the original position of the main and secondary protective pads. It can be adjusted according to the bending degree of the leg, making it easy for the wearer to wear.

[0004] However, the device still has shortcomings: it lacks a structure to limit the range of calf flexion, and the knee joint is relatively narrow compared to the thigh and calf, requiring an independent lateral protection structure for support. Furthermore, the device has a fixed length, and for patients with longer legs, the restraint points on the thigh and calf are too close together, resulting in excessively concentrated pressure on the thigh and calf and poor comfort. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a knee joint fixation brace for rehabilitation.

[0006] The technical solution of this utility model is as follows: A knee joint fixation brace for rehabilitation includes two sets of clamping arms arranged opposite each other. Each clamping arm includes a main arm and a secondary arm. A fixing ring is provided on the main arm, and a hollow shaft is rotatably mounted on the fixing ring. The secondary arm is rotatably connected to the main arm through the hollow shaft, and a sliding rod is slidably mounted inside the hollow shaft.

[0007] The chuck is rotatably connected to one end of the slide bar that extends out of the hollow shaft.

[0008] An adjustment assembly is mounted on a hollow shaft and drives a slide bar to slide radially thereon.

[0009] Angle limiting component, which is set on the fixed ring, to limit the deflection angle range of the auxiliary boom and the main boom;

[0010] T-shaped plates, two sets of T-shaped plates are slidably connected to the main boom and the auxiliary boom respectively, and telescopic limiting parts are set on the T-shaped plates to restrict their sliding on the main boom or the auxiliary boom;

[0011] It also includes multiple adjustable-length restraint components that connect the clamping arms and T-plates on both sides.

[0012] Preferably, the adjusting component includes a lead screw, which is coaxially rotatably connected to the hollow shaft. The lead screw is inserted into the slide bar and screwed thereto, and a knob is connected to one end of the lead screw that extends out of the hollow shaft.

[0013] Preferably, the angle limiting component includes a blocking plate, a slider, and a fixing block; the main body of the hollow shaft is inserted into the central channel of the fixing ring and rotatably connected to it, and the fixing block is set on the outer wall of the hollow shaft; the fixing ring is provided with an arc-shaped groove coaxially connected to its central channel, and a number of toothed grooves are arranged in a circular array around its axis on the arc-shaped inner wall of the arc-shaped groove, and the fixing ring is provided with an arc-shaped groove coaxially connected to the arc-shaped groove; the blocking plate is located in the arc-shaped groove and slidably connected to the fixing ring, the blocking plate is connected to a ring, the ring is sleeved on the hollow shaft and rotatably connected to it, a spring rod is provided on the blocking plate, the slider is slidably connected to the blocking plate and connected to the movable end of the spring rod, a locking block that fits into the toothed groove is provided at the end of the slider away from the spring rod, and a button for driving the slider to slide is slidably provided on the blocking plate.

[0014] Preferably, an angle gauge coaxial with the fixed ring is provided on the end face away from the chuck, and a pointer with its tip pointing towards the scale on the angle gauge is provided on the blocking plate.

[0015] Preferably, the outer wall of the hollow shaft is provided with a plurality of toothed grooves of the same height as the fixing block arranged in a ring array around its axis, the fixing ring is provided with a locking block that is slidably connected to it and fits into the toothed grooves, and a lever for driving the locking block to slide is slidably provided on the fixing ring.

[0016] Preferably, both the main arm and the auxiliary arm are provided with insertion holes, both the main arm and the auxiliary arm are provided with sliding grooves communicating with the insertion holes, and both the main arm and the auxiliary arm are provided with a number of positioning holes communicating with the insertion holes at equal intervals along their length.

[0017] Preferably, the telescopic limiting component includes a spring rod and a slider; a groove is provided at one end of the T-shaped plate inserted into the insertion hole, the spring rod is located in the groove, and the fixed end of the spring rod is connected to the inner wall of the groove; the slider is located in the groove and slidably connected to it, the slider is connected to the movable end of the spring rod, a positioning block is provided on the side of the slider away from the spring rod and slidably connected to it, the positioning block is inserted into the positioning hole on the corresponding side, and a button is slidably provided on the slider, one end of the button is inserted into the groove and connected to the slider, and the other end of the button is inserted into the groove and slidably connected to its inner wall.

[0018] Preferably, the restraint assembly includes an inner protective pad, a strap, and a buckle; one end of the inner protective pad is connected to the corresponding side clamping arm or T-shaped plate, one end of the strap is connected to the corresponding side clamping arm or T-shaped plate, the strap is located on the side of the inner protective pad on both clamping arms that are far apart from each other, and the strap is provided with Velcro; the buckle includes a male plug and a female buckle that snap together, the male plug and the female buckle are respectively sleeved on the two opposite straps and slidably connected to them.

[0019] Compared with the prior art, the present invention has the following beneficial technical effects:

[0020] By incorporating chucks and adjustment components, the spacing between the chucks located on both sides of the knee can be adjusted, allowing the chucks to quickly contact the sides of the knee, improving the stability of the clamping and protection of the knee area and preventing lateral slippage at the knee joint. By incorporating a fixing ring and angle limiting components, the swing range of the hollow shaft and auxiliary arm can be adjusted, facilitating the adjustment of the lower leg's swing angle during rehabilitation to promote recovery. By incorporating a locking block B with a toothed groove B on the hollow shaft, the insertion of the locking block B into the toothed groove B allows the lower leg to maintain a constant flexion angle after bending to any angle, providing good support at that angle. By incorporating a retractable T-shaped plate, with restraint components on the T-shaped plate, main arm, and auxiliary arm, the spacing of the restraint components on the thigh and lower leg can be adjusted according to different leg lengths, improving the overall stability of the fixation brace. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the clamping arm.

[0023] Figure 3 A schematic diagram of the connection structure between the hollow shaft, the retaining ring, and the chuck;

[0024] Figure 4 A schematic diagram showing the connection structure between the hollow shaft, the chuck, and the adjustment assembly;

[0025] Figure 5 This is a schematic diagram of the internal structure of the fixed ring;

[0026] Figure 6 This is a schematic diagram of the connection structure between the ring and the baffle plate;

[0027] Figure 7 This is a schematic diagram of the connection structure between the T-shaped plate and the telescopic limiting component.

[0028] Reference numerals: 1. Clamping arm; 1a. Main arm; 1b. Secondary arm; 101. Slide groove A; 102. Positioning hole; 2. Fixing ring; 201. Arc groove A; 2011. Toothed groove A; 202. Arc groove B; 203. Circular ring; 204. Blocking plate; 205. Spring rod A; 206. Slider A; 207. Locking block A; 208. Button A; 209. Locking block B; 210. Toggle plate; 3. Hollow shaft; 31. Toothed groove B; 32. Fixing block; 4. Slide rod; 5. Chuck; 6. Lead screw; 61. Knob; 7. T-shaped plate; 71. Slide groove B; 8. Spring rod B; 9. Slider B; 10. Positioning block; 11. Button B; 12. Restraint assembly; 121. Inner protective pad; 122. Strap; 1221. Velcro; 123. Buckle. Detailed Implementation

[0029] Example 1

[0030] like Figures 1-7As shown, this utility model proposes a rehabilitation knee joint fixation brace, comprising two sets of opposing clamping arms 1, a chuck 5, an adjustment assembly, an angle limiting assembly, a T-shaped plate 7, and multiple sets of length-adjustable restraint assemblies 12. The clamping arms 1 include a main arm 1a and a secondary arm 1b. A fixing ring 2 is provided on the main arm 1a, and a hollow shaft 3 is coaxially rotatably mounted on the fixing ring 2. The secondary arm 1b is rotatably connected to the main arm 1a via the hollow shaft 3, and a slide rod 4 is slidably mounted inside the hollow shaft 3. Both the main arm 1a and the secondary arm 1b are provided with insertion holes, and both the main arm 1a and the secondary arm 1b are provided with sliding grooves A101 communicating with the insertion holes. Furthermore, both the main arm 1a and the secondary arm 1b are equidistantly provided with several positioning holes 102 communicating with the insertion holes along their length direction. The chuck 5 is rotatably connected to one end of the slide rod 4 extending out of the hollow shaft 3. The adjusting assembly includes a lead screw 6, which is coaxially rotatably connected to the hollow shaft 3. The lead screw 6 is inserted into the slide bar 4 and screwed thereto. One end of the lead screw 6 extending outside the hollow shaft 3 is connected to a knob 61. An angle limiting assembly is mounted on the fixed ring 2, and includes a blocking plate 204, a slider A206, and a fixing block 32. The main body of the hollow shaft 3 is inserted into the central channel of the fixed ring 2 and rotatably connected thereto. The fixing block 32 is mounted on the outer wall of the hollow shaft 3. An arc-shaped groove A201, coaxially connected to the central channel, is provided inside the fixed ring 2. Several toothed grooves A2011 are arranged in a circular array around the axis of the arc-shaped inner wall of the arc-shaped groove A201. An arc-shaped groove B202, coaxially connected to the arc-shaped groove A201, is also provided on the fixed ring 2. The blocking plate 204 is located within the arc-shaped groove B202 and is slidably connected to the fixing ring 2. The blocking plate 204 is connected to the circular ring 203, which is sleeved on the hollow shaft 3 and rotatably connected to it. A spring rod A205 is provided on the blocking plate 204. The slider A206 is slidably connected to the blocking plate 204 and connected to the movable end of the spring rod A205. A locking block A207 that engages with the toothed groove A2011 is provided at the end of the slider A206 away from the spring rod A205. A button A208 for driving the slider A206 to slide is slidably provided on the blocking plate 204. An angle gauge coaxial with the fixed ring 2 is provided on the end face away from the chuck 5. A pointer with its tip pointing towards the scale on the angle gauge is provided on the blocking plate 204. The angle limiting assembly limits the deflection angle range of the auxiliary arm 1b and the main arm 1a. Two sets of T-shaped plates 7 are slidably connected to the main arm 1a and the auxiliary arm 1b, respectively, and the T-shaped plates 7 are provided with telescopic limiting components to restrict their sliding on the main arm 1a or the auxiliary arm 1b. The telescopic limiting components include a spring rod B8 and a slider B9. One end of the T-shaped plate 7 that is inserted into the insertion hole is provided with a sliding groove B71, and the spring rod B8 is located in the sliding groove B71. The fixed end of the spring rod B8 is connected to the inner wall of the sliding groove B71.Slider B9 is located within and slidably connected to slide groove B71. Slider B9 is connected to the movable end of spring rod B8. A positioning block 10 is provided on the side of slider B9 away from spring rod B8 and slidably connected to it. Positioning block 10 is inserted into positioning hole 102 on the corresponding side. Button B11 is slidably mounted on slider B9. One end of button B11 is inserted into slide groove B71 and connected to slider B9. The other end of button B11 is inserted into slide groove A101 and slidably connected to its inner wall. Restraint assembly 12 connects clamping arms 1 and T-shaped plate 7 on both sides. Restraint assembly 12 includes inner protective pad 121, strap 122, and buckle 123. One end of inner protective pad 121 is connected to clamping arm 1 or T-shaped plate 7 on the corresponding side. One end of strap 122 is connected to clamping arm 1 or T-shaped plate 7 on the corresponding side. Strap 122 is located on the side of inner protective pad 121 on both clamping arms 1 that is far away from each other. Velcro 1221 is provided on strap 122. The buckle 123 includes a male and female buckle that snap together, and the male and female buckles are respectively fitted onto two opposite straps 122 and slidably connected to them.

[0031] In this embodiment, the two sets of clamping arms 1 are assembled before use. First, the male and female buckles on the two sets of lower opposite straps 122 are connected, while the male and female buckles on the two sets of upper opposite straps 122 are opened. The extension length of the T-shaped plate 7 on the main arm 1a and the auxiliary arm 1b is adjusted according to the patient's leg length. When adjusting, press button B11 to push slider B9 to slide. Sliding slider B9 causes positioning block 10 to retract. At this time, T-shaped block 7 can be pulled out. After adjustment, release button B11 and insert positioning block 10 into the positioning hole 102 on the corresponding side. Place the patient's thigh between the two main arms 1a and the patient's lower leg between the two auxiliary arms 1b, ensuring it rests on the lower inner protective pad 121. Keep the two chucks 5 aligned with the sides of the knee. Adjust the length of the lower strap 122 according to the thickness of the patient's thigh and lower leg. To adjust, first detach the end of the strap 122 from the Velcro 1221, then tighten the strap 122 and reattach it to the Velcro 1221. Tighten the lower strap while keeping the main arms 1a in contact with the sides of the thigh. Then attach the upper inner protective pad 121 to the upper part of the patient's thigh or lower leg and fasten the upper buckle 123. Adjust the length of the upper strap 122 until the upper inner protective pad 121 is flush against the thigh. Next, rotate the knob 61, which rotates the lead screw 6, which in turn pushes the slide bar 4 until the chuck 5 is pressed against the sides of the knee. This completes the assembly of the brace. In the initial stage of use, the patient needs to keep the lower leg fixed. At this time, slide the lever 210, which drives the locking block B209 to slide and lock into the corresponding tooth groove B31. At this time, the hollow shaft 3 is locked, and the main arm 1a and the auxiliary arm 1b are in a straight line or at a certain angle. In the middle stage, the lower leg can be appropriately bent to restore movement. At this time, slide the lever 210 to release the rotation restriction on the hollow shaft 3 and press the button A208. The button A208 pushes the slider A206 to slide, which causes the locking block A207 to disengage from the tooth groove A2011. Move the blocking plate 204 to the appropriate position. At this time, a new range of motion is formed between the blocking plate 204 and one edge of the arc groove A201, and the fixing block 32 moves within this range of motion. That is, the auxiliary arm 1b can rotate freely relative to the main arm 1a within a certain angle range.

[0032] Example 2

[0033] like Figure 2 , Figure 3 and Figure 5 As shown, the present invention proposes a knee joint fixation brace for rehabilitation. Compared with the first embodiment, the hollow shaft 3 has a plurality of toothed grooves B31 arranged in a ring array around its axis on the outer wall, which are at the same height as the fixing block 32. The fixing ring 2 is provided with a locking block B209 that is slidably connected to it and fits into the toothed grooves B31. The fixing ring 2 is also provided with a lever 210 for driving the locking block B209 to slide.

[0034] In this embodiment, depending on the injury, the bending angle of the lower leg relative to the thigh needs to be adjusted and fixed in order to promote the recovery of the knee injury. At this time, it is only necessary to move the lever 210. The lever 210 drives the locking block B209 to slide and lock into the corresponding tooth groove B31, thereby blocking the rotation of the hollow shaft 3, so that the auxiliary arm 1b will not deflect relative to the main arm 1a.

[0035] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A knee joint fixation brace for rehabilitation, characterized in that, include Two sets of clamping arms (1) are arranged opposite to each other. The clamping arm (1) includes a main arm (1a) and a secondary arm (1b). A fixing ring (2) is provided on the main arm (1a). A hollow shaft (3) is coaxially rotatably provided on the fixing ring (2). The secondary arm (1b) is rotatably connected to the main arm (1a) through the hollow shaft (3). A slide rod (4) is slidably provided inside the hollow shaft (3). The chuck (5) is rotatably connected to one end of the slide bar (4) extending out of the hollow shaft (3); An adjustment assembly is mounted on a hollow shaft (3) and drives a slide bar (4) to slide radially thereon; Angle limiting component is provided on the fixed ring (2) to limit the deflection angle range between the auxiliary arm (1b) and the main arm (1a); T-shaped plate (7), two sets of T-shaped plates (7) are slidably connected to the main arm (1a) and the auxiliary arm (1b) respectively, and the T-shaped plate (7) is provided with telescopic limiting members to restrict its sliding on the main arm (1a) or the auxiliary arm (1b); And multiple sets of adjustable length restraint components (12), the restraint components (12) are connected to the clamping arms (1) on both sides and the T-shaped plate (7). The angle limiting assembly includes a blocking plate (204), a slider A (206), and a fixing block (32); the main body of the hollow shaft (3) is inserted into the central channel of the fixing ring (2) and rotatedly connected to it, and the fixing block (32) is set on the outer wall of the hollow shaft (3); the fixing ring (2) is provided with an arc-shaped groove A (201) coaxially connected to its central channel, and several toothed grooves A (2011) are arranged in a ring array around its axis on the arc-shaped inner wall of the arc-shaped groove A (201), and an arc-shaped groove B (202) coaxially connected to the arc-shaped groove A (201) is provided on the fixing ring (2); the blocking plate (204) is located in the arc-shaped groove B (201). 02) Inside and slidingly connected to the fixed ring (2), the blocking plate (204) is connected to the ring (203), the ring (203) is sleeved on the hollow shaft (3) and rotated coaxially with it, the blocking plate (204) is provided with the spring rod A (205), the slider A (206) is slidably connected to the blocking plate (204) and connected to the movable end of the spring rod A (205), the end of the slider A (206) away from the spring rod A (205) is provided with the locking block A (207) that fits with the tooth groove A (2011), and the blocking plate (204) is slidably provided with the button A (208) for driving the slider A (206) to slide.

2. The knee joint fixation brace for rehabilitation according to claim 1, characterized in that, The adjustment assembly includes a lead screw (6), which is coaxially rotatably connected to the hollow shaft (3). The lead screw (6) is inserted into the slide bar (4) and screwed to it. One end of the lead screw (6) extending out of the hollow shaft (3) is connected to a knob (61).

3. The knee joint fixation brace for rehabilitation according to claim 1, characterized in that, An angle scale coaxial with the fixed ring (2) is provided on the end face away from the chuck (5), and a pointer with the needle tip pointing towards the scale mark on the angle scale is provided on the blocking plate (204).

4. The knee joint fixation brace for rehabilitation according to claim 1, characterized in that, On the outer wall of the hollow shaft (3), a number of toothed grooves B (31) of the same height as the fixed block (32) are arranged in a ring array around its axis. A locking block B (209) is provided on the fixed ring (2) and is slidably connected to it and fits into the toothed grooves B (31). A lever (210) for driving the locking block B (209) to slide is slidably provided on the fixed ring (2).

5. A knee joint fixation brace for rehabilitation according to claim 1, characterized in that, Both the main arm (1a) and the auxiliary arm (1b) are provided with insertion holes. Both the main arm (1a) and the auxiliary arm (1b) are provided with sliding grooves A (101) that communicate with the insertion holes. Both the main arm (1a) and the auxiliary arm (1b) are provided with a number of positioning holes (102) that communicate with the insertion holes at equal intervals along their length direction.

6. A knee joint fixation brace for rehabilitation according to claim 5, characterized in that, The telescopic limiting component includes a spring rod B (8) and a slider B (9); a groove B (71) is provided at one end of the T-shaped plate (7) inserted into the insertion hole, the spring rod B (8) is located in the groove B (71), and the fixed end of the spring rod B (8) is connected to the inner wall of the groove B (71); the slider B (9) is located in the groove B (71) and is slidably connected to it, the slider B (9) is connected to the movable end of the spring rod B (8), a positioning block (10) is provided on the side of the slider B (9) away from the spring rod B (8) and is slidably connected to it, the positioning block (10) is inserted into the positioning hole (102) on the corresponding side, and a button B (11) is slidably provided on the slider B (9), one end of the button B (11) is inserted into the groove B (71) and connected to the slider B (9), and the other end of the button B (11) is inserted into the groove A (101) and is slidably connected to its inner wall.

7. A knee joint fixation brace for rehabilitation according to claim 1, characterized in that, The restraint assembly (12) includes an inner protective pad (121), a strap (122), and a buckle (123); one end of the inner protective pad (121) is connected to the corresponding side clamping arm (1) or T-shaped plate (7), one end of the strap (122) is connected to the corresponding side clamping arm (1) or T-shaped plate (7), the strap (122) is located on the side of the inner protective pad (121) on both sides of the clamping arm (1) that are far apart from each other, and the strap (122) is provided with Velcro (1221); the buckle (123) includes a male plug and a female buckle that snap together, the male plug and the female buckle are respectively sleeved on the two opposite straps (122) and slidably connected to them.

Images