Brace for posterior cruciate ligament injury of knee

Abstract

Disclosed is a brace for a posterior cruciate ligament injury of a knee, relating to the technical field of medical rehabilitation aids, and comprising upper connecting frames, lower connecting frames, an upper wearable mechanism, a lower wearable mechanism, and a support mechanism; there are two upper connecting frames which are arranged with front-rear symmetry, there are two lower connecting frames which are arranged with front-rear symmetry, a support shaft is fixedly arranged on a right end of the upper connecting frame, and a left end of the lower connecting frame is rotatably sleeved over the support shaft by means of a bearing; the upper wearable mechanism is arranged between the upper connecting frames, and the lower wearable mechanism is arranged between the lower connecting frames; the support mechanism is arranged between the upper wearable mechanism and the lower wearable mechanism; and the support mechanism is capable of moving concurrently with movement of a knee joint of a user, thereby supporting the tibial head of the user when fully extending the knee joint, and reducing posterior cruciate ligament fatigue.

Description

A brace for posterior cruciate ligament injury of the knee joint Technical Field

[0001] This invention relates to the field of medical rehabilitation aids technology, specifically to a support device for posterior cruciate ligament injury of the knee joint. Background Technology

[0002] The posterior cruciate ligament (PCL) is a ligament that connects the femur and tibia at the knee joint and loops around the back of the knee. Its main function is to support the upper end of the tibia and prevent it from dislocating posteriorly. During the rehabilitation phase after a PCL injury, the load on the PCL increases when the user's knee is extended, especially when the user is lying flat with the knee flat on the ground, where the load is at its maximum. To ensure the normal and rapid recovery of the PCL after injury, a professional support device is needed to support the user's knee joint and reduce the workload on the PCL. One such support device (CN116211) is available. 572A), whose specific structure consists of a support plate structure on both sides of the femur and tibia, and a manually inflatable air bladder structure on the support plate on the tibia side. In use, when the user lies flat, the air bladder is inflated to lift and support the tibial head, preventing it from sinking and displacing downwards and tightening the posterior cruciate ligament. This device relies on a manually restartable air bladder, which requires frequent inflation each time the user flattens the knee joint. Moreover, its adaptability to users of different body types is poor. In response, the structure of this support device has been improved, and a new support device for posterior cruciate ligament injury of the knee joint has been invented. Summary of the Invention

[0003] The purpose of this invention is to address the deficiencies and shortcomings of existing technologies by providing a support device for posterior cruciate ligament injuries of the knee joint. This device features a spliced ​​wearable structure with a rigid connection between the upper and lower parts of the wearable structure, thereby creating a follow-up support structure that moves in sync with the user's knee joint movements. This allows the device to support the tibial head when the user rests their knee, thus reducing fatigue of the posterior cruciate ligament.

[0004] To achieve the above objectives, the present invention adopts the following technical solutions:

[0005] It comprises an upper connecting frame and a lower connecting frame, wherein there are two upper connecting frames arranged symmetrically front to back, and two lower connecting frames arranged symmetrically front to back. A support shaft is fixedly mounted on the right end of the upper connecting frame, and the left end of the lower connecting frame is screwed onto the support shaft via a bearing; its characteristic is that it further comprises:

[0006] An upper wearable mechanism is disposed between the upper connecting frames;

[0007] A lower wearable mechanism is disposed between the lower connecting frames;

[0008] A support mechanism is provided between the upper wearable mechanism and the lower wearable mechanism.

[0009] Preferably, the wearable mechanism comprises:

[0010] The upper side plate consists of two upper side plates arranged symmetrically front to back, with the front and rear upper connecting frames respectively fixedly mounted on the front and rear upper side plates.

[0011] The upper panel consists of two panels, which are symmetrically arranged between the front and rear upper side panels.

[0012] The upper connecting strap consists of two sets. One set of upper connecting straps is fixedly installed on the upper side plates on the front and rear sides and sleeved on the outside of the upper plates. The other set of upper connecting straps is fixedly installed on the upper and lower side plates and sleeved on the outside of the upper side plates.

[0013] Preferably, the lower wearable mechanism comprises:

[0014] The lower side plate consists of two plates arranged symmetrically front and back, with the front and rear lower connecting brackets respectively fixedly mounted on the front and rear lower side plates.

[0015] The lower panel consists of two panels that are symmetrically arranged between the front and rear lower side panels.

[0016] The lower connecting strap consists of two sets. One set of lower connecting straps is fixedly installed on the lower side plates on the front and rear sides and sleeved on the outside of the lower side plates. The other set of lower connecting straps is fixedly installed on the lower side plates on the upper and lower sides and sleeved on the outside of the lower side plates.

[0017] Preferably, a slot is provided on the side of the lower panel facing the upper panel.

[0018] Preferably, the support mechanism comprises:

[0019] The opening and closing components are in two sets and are respectively installed on the front and rear lower connecting frame covers;

[0020] A connecting component, wherein the connecting component is disposed on the opening / closing component;

[0021] A connector, wherein the connector is disposed on the connecting assembly;

[0022] A fixing seat, wherein the fixing seat is fixedly disposed at the lower end of the connecting seat;

[0023] The balloon is disposed between the connecting seats on the front and rear sides, and the front and rear ends of the balloon are respectively fixedly disposed on the connecting seats on the front and rear sides.

[0024] Preferably, the opening and closing component comprises:

[0025] Guide rails, wherein two guide rails are fixedly installed on the inner wall of the lower connecting frame in a symmetrical manner;

[0026] The lifting seat is arranged between two guide rails in a set, and the lifting seat is slidably mounted on the guide rails;

[0027] The drive shaft is screwed onto the lower connecting frame via a bearing, and one end of the drive shaft extends into the lifting seat.

[0028] The crank is fixedly mounted on the drive shaft and is located inside the lifting seat;

[0029] The support rod is fixedly mounted on the crank at the end away from the drive shaft. The lifting seat has an oblong hole, and the support rod is movably inserted into the oblong hole.

[0030] Preferably, a drive gear is fixedly mounted on the support shaft, and a half gear is fixedly mounted on the end of the transmission shaft away from the crank, with the drive gear and the half gear meshing with each other.

[0031] Preferably, the connection component comprises:

[0032] A guide rod, which is movably mounted on a guide rail;

[0033] The mounting plate is fixedly mounted on the guide rod, and the lifting seat is clamped between the lower connecting frame and the mounting plate.

[0034] A limiting rack is fixedly mounted on the mounting plate;

[0035] A spring pawl is fixedly mounted on the lifting seat, and the spring pawl is movably engaged with the limiting rack.

[0036] Preferably, a movable shaft is fixedly mounted on the mounting plate, and the upper end of the connecting seat is screwed onto the movable shaft via a bearing.

[0037] Compared with the prior art, the beneficial effects of the present invention are:

[0038] 1. This device is equipped with a spliced ​​upper side plate, upper panel, lower side plate, and lower panel, and the upper and lower side plates are rigidly connected by an upper connecting frame and a lower connecting frame, thereby providing rigid support for the user's knee joint. Furthermore, a balloon is installed through the connecting frame to support the tibial head of the user's knee joint and reduce the fatigue burden on the posterior cruciate ligament.

[0039] 2. This device has a sliding lifting seat on the lower connecting frame. When the upper and lower connecting frames are rotated by the drive gear and half gear, the crank pushes the lifting seat to move, thereby moving the balloon. This allows the balloon to be lifted up and supported when the user lowers their knee joint. Attached Figure Description

[0040] Figure 1 is a schematic diagram of the structure of the present invention.

[0041] Figure 2 is a front side view of Figure 1.

[0042] Figure 3 is a top side view of Figure 1.

[0043] Figure 4 is a bottom side view of Figure 1.

[0044] Figure 5 is a schematic diagram of the upper wearable mechanism in this invention.

[0045] Figure 6 is a schematic diagram of the structure of the wearable mechanism in this invention.

[0046] Figure 7 is a schematic diagram of the connection between the lower connecting frame and the lifting seat in this invention.

[0047] Figure 8 is a schematic diagram of the structure of the lifting seat, mounting plate, connecting frame, and balloon in this invention.

[0048] Explanation of reference numerals in the attached figures:

[0049] Upper connecting frame 1, lower connecting frame 2, support shaft 3, upper wearing mechanism 4, upper side plate 4-1, upper panel 4-2, upper connecting belt 4-3, lower wearing mechanism 5, lower side plate 5-1, lower panel 5-2, lower connecting belt 5-3, support mechanism 6, connecting seat 6-1, fixed seat 6-2, balloon 6-3, opening and closing assembly 7, guide slide rail 7-1, lifting seat 7-2, transmission shaft 7-3, crank 7-4, support rod 7-5, waist-shaped hole 7-6, connecting assembly 8, guide rod 8-1, mounting plate 8-2, limit rack 8-3, spring pawl 8-4, empty slot 9, drive gear 10, half gear 11, movable shaft 12. Detailed Implementation

[0050] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] As shown in Figures 1-8, the specific implementation adopts the following technical solution:

[0052] It comprises an upper connecting frame 1 and a lower connecting frame 2, wherein there are two upper connecting frames 1 arranged symmetrically front to back, and two lower connecting frames 2 arranged symmetrically front to back. A support shaft 3 is fixedly mounted on the right end of the upper connecting frame 1, and the left end of the lower connecting frame 2 is screwed onto the support shaft 3 via a bearing. It also includes:

[0053] Upper wearable mechanism 4, wherein the upper wearable mechanism 4 is disposed between the upper connecting frames 1;

[0054] The lower wearing mechanism 5 is disposed between the lower connecting frames 2;

[0055] Support mechanism 6 is disposed between upper wearing mechanism 4 and lower wearing mechanism 5;

[0056] The wearable mechanism 4 includes:

[0057] Upper side plate 4-1, there are two upper side plates 4-1 arranged symmetrically front and back, and the two upper connecting frames 1 are respectively fixedly installed on the two upper side plates 4-1.

[0058] The upper panel 4-2 consists of two panels, which are symmetrically arranged between the front and rear upper side panels 4-1.

[0059] The upper connecting strip 4-3 consists of two sets. One set of upper connecting strip 4-3 is fixedly installed on the upper side plate 4-1 on the front and rear sides and sleeved on the outside of the top plate 4-2. The other set of upper connecting strip 4-3 is fixedly installed on the upper panel 4-2 on the upper and lower sides and sleeved on the outside of the upper side plate 4-1.

[0060] The lower wearable mechanism 5 includes:

[0061] Lower side plate 5-1, there are two lower side plates 5-1 arranged symmetrically front and back, and the two lower connecting brackets 2 are respectively fixedly installed on the two lower side plates 5-1.

[0062] The lower panel 5-2 consists of two panels 5-2 arranged symmetrically between the front and rear lower side panels 5-1. A slot 9 is provided on the side of the lower panel 5-2 facing the upper panel 4-2, so that when the knee joint is bent after wearing, the slot 9 facilitates the bending and placement of the knee and the knee bend.

[0063] The lower connecting strip 5-3 consists of two sets. One set of lower connecting strips 5-3 is fixedly installed on the lower side plates 5-1 on the front and rear sides and sleeved on the outside of the lower plate 5-2. The other set of lower connecting strips 5-3 is fixedly installed on the lower panel 5-2 on the upper and lower sides and sleeved on the outside of the lower side plate 5-1.

[0064] Support structure 6 includes:

[0065] The opening and closing components 7 are in two sets and are respectively installed on the upper covers of the front and rear lower connecting frames 2;

[0066] Connecting component 8, which is disposed on opening / closing component 7;

[0067] Connector 6-1, wherein the connector 6-1 is disposed on the connecting assembly 8;

[0068] The fixing seat 6-2 is fixedly installed at the lower end of the connecting seat 6-1;

[0069] The balloon 6-3 is disposed between the connecting seats 6-1 on the front and rear sides, and the front and rear ends of the balloon 6-3 are respectively fixedly disposed on the connecting seats 6-1 on the front and rear sides.

[0070] Opening and closing component 7 includes:

[0071] Guide rails 7-1, two guide rails 7-1 are fixedly installed on the inner wall of the lower connecting frame 2 in a symmetrical manner;

[0072] The lifting seat 7-2 is arranged between two guide rails 7-1 in a set, and the lifting seat 7-2 is slidably mounted on the guide rails 7-1;

[0073] The drive shaft 7-3 is screwed onto the lower connecting frame 2 via a bearing, and one end of the drive shaft 7-3 extends into the lifting seat 7-2;

[0074] Crank 7-4 is fixedly mounted on transmission shaft 7-3 and is located inside lifting seat 7-2;

[0075] The support rod 7-5 is fixedly mounted on the crank 7-4 at the end away from the drive shaft 7-3. The lifting seat 7-2 has an oblong hole 7-6, and the support rod 7-5 is movably inserted into the oblong hole 7-6.

[0076] The drive gear 10 is fixedly mounted on the support shaft 3.

[0077] Half gear 11, which is fixedly mounted on transmission shaft 7-3, and the driving gear 10 meshes with half gear 11;

[0078] Connection component 8 includes:

[0079] Guide rod 8-1, wherein the guide rod 8-1 is movably mounted on guide rail 7-1;

[0080] Mounting plate 8-2 is fixedly mounted on guide rod 8-1, and lifting seat 7-2 is clamped between lower connecting frame 2 and mounting plate 8-2;

[0081] The limiting rack 8-3 is fixedly mounted on the mounting plate 8-2;

[0082] Spring pawl 8-4, the spring pawl 8-4 is fixedly mounted on the lifting seat 7-2, and the spring pawl 8-4 is movably engaged with the limiting rack 8-3;

[0083] The movable shaft 12 is fixedly mounted on the mounting plate 8-2, and the upper end of the connecting seat 6-1 is screwed onto the movable shaft 12 via a bearing.

[0084] When using this device, to put on the support, first slip the upper panel 4-2 over the user's feet and onto the user's thighs. Next, slip the upper side panel 4-1 and lower side panel 5-1 over the user's feet and onto the user's knees, placing the balloon 6-3 behind the knee joint. Position the upper side panel 4-1 between the user's thighs and insert it into the upper connecting strap 4-3 connected to the upper panel 4-2. Position the lower side panel 5-1 between the user's calves. Then, slip the lower panel... 5-2 is slipped onto the user's feet and sandwiched between the lower side panels 5-1 on both the front and back sides, with the lower connecting strap 5-3, which is connected to the lower panel 5-2, fitting over the outside of the lower side panel 5-1, thus completing the wearing of the support device. When the user's knee joint is straightened, the upper connecting frame 1 rotates via the thigh, causing the upper connecting frame 1 to rotate with the lower connecting frame 2 as support. The upper connecting frame 1 drives the support shaft 3 to rotate, which in turn drives the drive gear 10 to rotate. The drive gear 10 then pushes the half gear 11 to rotate, thereby the half gear 11 drives the transmission shaft. Rotation of 7-3 causes the half-gear 11 to lift one end of the crank's support rod 7-5 upwards. This, in turn, pushes the lifting seat 7-2 upwards. The spring pawl 8-4 engages with the limiting rack 8-3, causing the mounting plate 8-2 to move upwards synchronously via the lifting seat 7-2. The mounting plate 8-2 then moves the connecting seat 6-1 upwards, which in turn raises the balloon 6-3. The balloon 6-3 pushes the balloon upwards to press against the tibial head, thus assisting the posterior cruciate ligament in supporting the tibia and preventing it from collapsing from the femur. The balloon 6-3 is displaced downwards to reduce the burden on the posterior cruciate ligament. When the knee is bent, the balloon 6-3 descends and disengages from the back of the knee joint, thereby releasing the support limit of the balloon 6-3 when the user bends the knee. When adjusting the initial vertical position of the balloon 6-3 according to different user body shapes, the spring pawl 8-4 is pushed to disengage from the limiting rack 8-3. Then, the mounting plate 8-2 is pushed to move, thereby driving the connecting seat 6-1 to move through the mounting plate 8-2, and thus adjusting the initial position of the balloon 6-3.

[0085] Compared with the prior art, the beneficial effects of the present invention are:

[0086] 1. This device is equipped with a spliced ​​upper side plate 4-1, upper panel 4-2 and lower side plate 5-1 and lower panel 5-2, and the upper side plate 4-1 and lower side plate 5-1 are rigidly connected through the upper connecting frame 1 and the lower connecting frame 2, thereby achieving rigid support for the user's knee joint. Furthermore, the balloon 6-3 is set through the connecting frame to support the tibial head of the user's knee joint and reduce the fatigue burden on the posterior cruciate ligament.

[0087] 2. This device has a sliding lifting seat 7-2 on the lower connecting frame 2. When the device rotates between the upper connecting frame 1 and the lower connecting frame 2 via the drive gear 10 and the half gear 11, the crank pushes the lifting seat 7-2 to move, thereby driving the balloon 6-3 to move. This allows the balloon 6-3 to be lifted up and support the user's knee joint when the user lowers their knee joint.

[0088] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A support device for posterior cruciate ligament injury of the knee joint, comprising an upper connecting frame (1) and a lower connecting frame (2), wherein there are two upper connecting frames (1) arranged symmetrically front to back, and two lower connecting frames (2) arranged symmetrically front to back, a support shaft (3) is fixedly mounted on the right end of the upper connecting frame (1), and the left end of the lower connecting frame (2) is screwed onto the support shaft (3) via a bearing; characterized in that, It also includes: The upper wearable mechanism (4) is disposed between the upper connecting frames (1); The lower wearing mechanism (5) is disposed between the lower connecting frames (2); The support mechanism (6) is located between the upper wearing mechanism (4) and the lower wearing mechanism (5).

2. The support for posterior cruciate ligament injury of knee joint according to claim 1, wherein: The wearable mechanism (4) includes: The upper side plate (4-1) consists of two upper side plates (4-1) arranged symmetrically front and back, and the two upper connecting frames (1) are respectively fixed on the two upper side plates (4-1); The upper panel (4-2) consists of two panels, which are arranged symmetrically between the front and rear upper side panels (4-1). The upper connecting strip (4-3) consists of two sets. One set of upper connecting strips (4-3) is fixedly installed on the upper side plates (4-1) on the front and rear sides and sleeved on the outside of the top plate (4-2). The other set of upper connecting strips (4-3) is fixedly installed on the upper panel (4-2) on the upper and lower sides and sleeved on the outside of the upper side plate (4-1).

3. The brace according to claim 2, wherein: The aforementioned wearable mechanism (5) includes: The lower side plate (5-1) consists of two plates arranged symmetrically front and back, and the two lower connecting brackets (2) are fixedly mounted on the two lower side plates (5-1) respectively. The lower panel (5-2) consists of two panels, which are arranged symmetrically between the front and rear lower side panels (5-1). The lower connecting strip (5-3) consists of two sets. One set of lower connecting strips (5-3) is fixedly installed on the lower side plates (5-1) on the front and rear sides and sleeved on the outside of the lower plate (5-2). The other set of lower connecting strips (5-3) is fixedly installed on the lower panel (5-2) on the upper and lower sides and sleeved on the outside of the lower side plate (5-1).

4. The brace for posterior cruciate ligament injury of knee joint according to claim 3, characterized in that: The lower panel (5-2) has a slot (9) on the side facing the upper panel (4-2).

5. The brace of claim 4, wherein: The support mechanism (6) includes: The opening and closing components (7) are in two sets and are respectively installed on the upper cover of the front and rear lower connecting frames (2); A connecting component (8) is disposed on the opening and closing component (7); Connecting seat (6-1), the connecting seat (6-1) is disposed on the connecting assembly (8); A fixing seat (6-2) is fixedly installed at the lower end of the connecting seat (6-1); The balloon (6-3) is disposed between the connecting seats (6-1) on the front and rear sides, and the front and rear ends of the balloon (6-3) are respectively fixedly disposed on the connecting seats (6-1) on the front and rear sides.

6. The brace of claim 5, wherein: The opening and closing component (7) includes: Guide rails (7-1), the guide rails (7-1) are fixedly installed on the inner wall of the lower connecting frame (2) in two groups and in a left-right symmetrical manner; The lifting seat (7-2) is arranged between two guide rails (7-1) in a set, and the lifting seat (7-2) is slidably mounted on the guide rails (7-1); The drive shaft (7-3) is screwed onto the lower connecting frame (2) via a bearing, and one end of the drive shaft (7-3) extends into the lifting seat (7-2); The crank (7-4) is fixedly mounted on the transmission shaft (7-3) and is located inside the lifting seat (7-2); The support rod (7-5) is fixedly mounted on the crank (7-4) at one end away from the drive shaft (7-3). The lifting seat (7-2) has an oblong hole (7-6) and the support rod (7-5) is movably inserted into the oblong hole (7-6).

7. The brace of claim 6, wherein: A drive gear (10) is fixedly installed on the support shaft (3), and a half gear (11) is fixedly installed on the end of the transmission shaft (7-3) away from the crank (7-4). The drive gear (10) and the half gear (11) are meshed with each other.

8. The brace of claim 7, wherein: The connection component (8) includes: Guide rod (8-1), which is movably mounted on guide rail (7-1); Mounting plate (8-2), which is fixedly mounted on guide rod (8-1), and lifting seat (7-2) is sandwiched between lower connecting frame (2) and mounting plate (8-2); A limiting rack (8-3) is fixedly mounted on a mounting plate (8-2); The spring pawl (8-4) is fixedly mounted on the lifting seat (7-2) and is movably engaged with the limiting rack (8-3).

9. The brace of claim 8, wherein: A movable shaft (12) is fixedly installed on the mounting plate (8-2), and the upper end of the connecting seat (6-1) is screwed onto the movable shaft (12) through a bearing.

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