Adjustable locking mechanism, knee joint rehabilitation exercise protection device and protection method

Abstract

The present invention relates to an adjustment locking mechanism, a knee joint rehabilitation sports protection device and a protection method, which belongs to the technical field of rehabilitation equipment and solves the problem in the prior art that knee joint protection devices affect the blood circulation of the knee. The present invention includes a ratchet, a rack and a locking buckle bracket, the locking buckle bracket is provided with a positioning bracket and a rack guide, the positioning bracket is perpendicular to the rack guide, the two ends of the axis of the ratchet are arranged on the positioning bracket, and gears cooperating with the rack are provided on both sides of the ratchet, and the rack slides in the rack guide. The present invention uses an adjustment locking mechanism to adjust the length of the bandage, and can achieve self-locking, thereby improving wearing comfort; at the same time, the present invention does not affect the normal flexion and extension freedom of the human knee joint, and can improve the stress condition of the knee joint.

Description

Technical Field

[0001] The present invention relates to the technical field of rehabilitation equipment, and in particular to an adjustment locking mechanism, a knee joint rehabilitation exercise protection device and a protection method. Background Art

[0002] The knee joint is the most complex of all joints in the human body because it bears most of the body's weight, and the knee joint moves frequently in daily life, making it a key part of the human lower limb activity. Because of this, the knee joint has the highest injury rate among all joints. For those patients with early and middle-stage knee osteoarthritis, pain can be reduced and symptoms can be relieved by taking medicine, wearing orthotics, etc. For patients with late-stage knee osteoarthritis, knee replacement is an effective option to relieve knee pain and restore knee joint mobility. For patients who choose to undergo knee replacement, since part of the bone will be cut off during the operation and replaced with a metal knee joint, the growth of the surrounding muscles and tissues is a very long process. Therefore, the recovery period after knee replacement is generally very long, generally 1 to 2 years, and it takes even longer to return to the state before the operation. Therefore, how to help patients spend the recovery period faster and safer is very meaningful.

[0003] Current knee joint protectors stabilize the knee by tightening the bandage, but long-term wearing will affect blood circulation to the knee and have a negative impact on knee recovery. Summary of the invention

[0004] In view of the above analysis, the embodiments of the present invention aim to provide an adjustment locking mechanism, a knee joint rehabilitation exercise protection device and a protection method, so as to solve the problem that the existing knee joint protection devices affect the blood circulation of the knee.

[0005] On the one hand, the present invention provides an adjustment locking mechanism, including a ratchet, a rack and a locking buckle bracket, the locking buckle bracket is provided with a positioning bracket and a rack guide, the positioning bracket is perpendicular to the rack guide, the two ends of the ratchet shaft are arranged on the positioning bracket, gears cooperating with the rack are provided on both sides of the ratchet, and the rack slides in the rack guide.

[0006] Furthermore, the adjustment locking mechanism also includes a serrated pressure plate, one end of the rack is hinged to the serrated pressure plate, and the other end slides in the rack guide rail.

[0007] Furthermore, the adjustment locking mechanism also includes a spring pressure pin, a pawl spring and a pawl, the upper end of the spring pressure pin is arranged in the threaded hole at the top of the locking buckle bracket, the lower end can press the front end of the pawl, the tail end of the pawl is hinged to the locking buckle bracket, and the pawl spring is connected to the pawl and can make the pawl rebound.

[0008] Furthermore, the adjustment locking mechanism also includes a ratchet pin and a thrust pin, one end of the ratchet pin is arranged in the hole at the top of the locking buckle bracket, and the other end is provided with a strip slot hole, the strip slot hole is parallel to the rack guide rail, and one end of the thrust pin is arranged in the strip slot hole.

[0009] Furthermore, an arc-shaped slot hole is provided on the ratchet wheel, and the other end of the thrust pin is arranged in the arc-shaped slot hole.

[0010] Furthermore, three arc-shaped slots are provided, and the three arc-shaped slots are connected and non-concentric.

[0011] On the other hand, the present invention provides a knee joint rehabilitation sports protection device, including a thigh support, a crank, an arc guide, a linear guide, a calf support and the above-mentioned adjustment locking mechanism, the lower end of one side of the thigh support is connected to the upper end of one side of the calf support through the arc guide and the linear guide in sequence, the lower end of the other side of the thigh support is connected to the upper end of the other side of the calf support through the crank, and the adjustment locking mechanism is respectively arranged on the thigh support and the calf support.

[0012] Furthermore, the lower end of one side of the thigh support is connected to the upper end of the circular arc guide rail, and the lower end of the circular arc guide rail is connected to the upper end of the calf support through the linear guide rail.

[0013] Furthermore, a slot hole is provided at the lower end of the other side of the thigh support and the upper end of the other side of the calf support, and both ends of the crank are arranged in the slot hole and are provided with a joint bearing hole, and a joint bearing is provided in the joint bearing hole.

[0014] Furthermore, the thigh support and the calf support are provided with straps, and the adjustment locking mechanism is used to adjust the length of the straps.

[0015] In another aspect, the present invention provides a knee joint rehabilitation exercise protection method, using the above-mentioned knee joint rehabilitation exercise protection device, the steps comprising:

[0016] The user wears the knee joint rehabilitation sports protection device and adjusts the length of the strap and the tension of the elastic connector; the crank follows the internal and external rotation of the inner side of the knee joint, and the arc guide follows the external and internal rotation of the knee joint; the knee joint rehabilitation sports protection device follows the movement of the knee joint in the sagittal plane, and the elastic connector provides assistance, and the knee joint rehabilitation sports protection device follows the internal and external rotation of the knee joint in the coronal plane.

[0017] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0018] (1) The present invention utilizes an arc guide rail to follow the internal and external rotation movement of the knee in the horizontal plane, and limits the internal and external rotation angle of the knee by the limited length of the guide rail; and utilizes a bearing and a linear guide rail to follow the flexion and extension movement of the knee in the sagittal plane, without affecting the normal flexion and extension freedom of the human knee joint;

[0019] (2) The present invention utilizes the joint bearing and the curved rod to follow the inversion and inversion movement of the knee joint in the coronal plane, utilizes the limited stroke of the linear guide rail and the limited rotation angle of the joint bearing to limit the inversion and inversion angle of the knee joint; utilizes the elastic connecting piece to provide assistance to the knee joint, thereby improving the stress condition of the knee joint;

[0020] (3) The present invention uses a locking buckle designed with a ratchet pawl and a gear rack to adjust the length of the bandage and can achieve self-locking to keep the bandage in a taut state, making it convenient to adjust the tightness of the bandage while improving the wearing comfort and self-locking stability;

[0021] (4) The present invention can ensure that the knee moves within a normal range, limit the angle range of internal and external rotation, and internal and external valgus, and provide a certain amount of assistance to the knee joint. Without affecting the normal movement of the knee joint, it plays a role in protecting the knee and can provide a safe and good recovery environment for patients with knee osteoarthritis;

[0022] (5) The present invention can guide the knee joint to move within a normal and reasonable range, accelerate the recovery process of the knee joint, and solve the problem that existing bandage products affect the blood circulation of the knee joint.

[0023] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of a knee joint rehabilitation sports protection device of a specific embodiment;

[0026] Figure 2 It is a cross-sectional view of the arc guide rail connection structure of a specific embodiment;

[0027] Figure 3 Schematic diagram of the arc guide structure of a specific embodiment (I);

[0028] Figure 4Schematic diagram of the arc guide structure of a specific embodiment (II);

[0029] Figure 5 Schematic diagram of the arc guide structure of a specific embodiment (III);

[0030] Figure 6 It is a schematic diagram of the linear guide structure of a specific embodiment;

[0031] Figure 7 A cross-sectional view of a crank connection structure of a specific embodiment;

[0032] Figure 8 It is a schematic diagram of the locking buckle structure of a specific embodiment (I);

[0033] Fig. 9 It is a cross-sectional view of the locking buckle structure of a specific embodiment (I);

[0034] Fig.10 It is a schematic diagram of the locking buckle structure of a specific embodiment (II);

[0035] Fig.11 It is a cross-sectional view of the locking buckle structure of a specific embodiment (II);

[0036] Fig.12 A schematic diagram of the locking buckle gear rack connection structure of a specific embodiment;

[0037] Fig.13 Schematic diagram of sagittal plane motion of the knee joint rehabilitation exercise protection device of a specific embodiment (I);

[0038] Fig.14 Schematic diagram of sagittal plane motion of the knee joint rehabilitation sports protection device of a specific embodiment (II);

[0039] Fig.15 Schematic diagram of coronal plane motion of the knee joint rehabilitation motion protection device of a specific embodiment (I);

[0040] Fig.16 Schematic diagram of coronal plane motion of the knee joint rehabilitation exercise protection device according to a specific embodiment (II).

[0041] Reference numerals:

[0042] 1-thigh support; 2-bandage; 3-locking buckle; 31-positioning support; 32-rack guide rail; 33-top plate; 34-side plate; 35-bottom plate; 4-thigh protection pad; 5-bend rod; 6-calf protection pad; 7-arc guide rail; 71-first guide rail part; 72-first slider part; 8-elastic connector; 9-baffle support pin; 10-linear guide rail; 101-second guide rail part; 102-second slider part; 11-calf support ; 12-bearing; 13-baffle support pin fixing screw; 14-bearing inner baffle; 15-linear guide rail connecting seat; 16-spherical bearing; 17-spherical bearing pin; 18-bearing outer retaining spring; 19-bearing inner retaining spring; 20-ratchet toggle pin; 21-spring pressure pin; 22-pawl spring; 23-pawl; 24-ratchet; 25-rack; 26-serrated pressure plate; 27-locking buckle bracket; 28-connecting pin; 29-thrust pin. DETAILED DESCRIPTION

[0043] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0044] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The terms "top", "bottom", "above", "lower", and "on" used throughout the description are relative to the relative positions of components of a device, such as the relative positions of the top and bottom substrates within a device. It is understood that devices are multifunctional regardless of their orientation in space.

[0046] The current knee joint protection device stabilizes the knee by tightening the bandage, but long-term wearing will affect the blood circulation of the knee and have a negative impact on the recovery of the knee. The purpose of the present invention is to provide a knee joint rehabilitation exercise protection device and protection method, which can stabilize the knee joint, reduce the impact on the blood circulation of the knee joint, and enable patients with knee arthroplasty to recover their mobility faster and return to normal life.

[0047] Example 1

[0048] A specific embodiment of the present invention, as Figure 1As shown, a knee joint rehabilitation sports protection device is disclosed, including a thigh support 1, a crank 5, an arc guide rail 7, a linear guide rail 10 and a calf support 11, the lower end of one side of the thigh support 1 is connected to the arc guide rail 7, the linear guide rail 10 and the upper end of one side of the calf support 11 in sequence, and the lower end of the other side of the thigh support 1 is connected to the upper end of the other side of the calf support 11 through the crank 5.

[0049] Compared with the prior art, the knee joint rehabilitation sports protection device provided in this embodiment has one side of the thigh support connected to one side of the calf support through interconnected arc guides and linear guides, and the other side of the thigh support is connected to the other side of the calf support through a crank, which can ensure that the knee moves within a normal range, limit the angle range of internal and external rotation, and internal and external eversion, and protect the knee without affecting the normal movement of the knee joint, and can provide a safe and good recovery environment for patients with knee osteoarthritis; the device solves the problem of existing bandage products affecting the blood circulation of the knee joint, can guide the knee joint to move within a normal and reasonable range, and can accelerate the rehabilitation process of the knee joint.

[0050] It should be noted that, in the natural state, that is, when the user wears the protective device and stands, the arc guide rail 7 is in a horizontal state, and the crank 5 and the linear guide rail 10 are in a vertical state.

[0051] The thigh support 1 is a semi-cylindrical structure, which adopts the arc of the semi-cylindrical structure to adapt to the user's thigh. Ears are respectively provided on both sides of the thigh support 1, and the ears are connected to the strap 2. Specifically, one end of the strap 2 is fixedly connected to the ear on one side of the thigh support 1 by a rivet, and the other end is connected to the ear on the other side of the thigh support 1 by an adjustable locking mechanism, and the adjustable locking mechanism is arranged on the ear of the thigh support 1.

[0052] In this embodiment, in order to adapt to the wearing of different users, an adjustment locking mechanism is used to adjust the length of the strap 2, and the adjustment locking mechanism only needs to be able to adjust the length of the strap 2.

[0053] In order to ensure that the thigh support 1 is firmly connected to the user, a strap 2 is provided at the upper and lower ends of the thigh support 1 respectively.

[0054] In this embodiment, the adjustable locking mechanism is a locking buckle 3, which is fixed to the thigh support 1 by rivets. By changing the tightening length of the bandage 2, the diameter of the wearer's thigh is matched.

[0055] like Figure 8-Figure 11As shown in the figure, the locking buckle 3 includes a ratchet wheel 24, a rack 25, and a locking buckle bracket 27. The locking buckle bracket 27 is provided with a positioning bracket 31 and a rack guide 32. The positioning bracket 31 is perpendicular to the rack guide 32. The positioning bracket 31 is used to position the spatial position of the ratchet wheel 24. The rack guide 32 provides sliding navigation for the movement of the rack 25. Both ends of the shaft of the ratchet wheel 24 are arranged on the positioning bracket 31. A gear is provided on each side of the ratchet wheel 24, and the gear is engaged with the rack 25. The rack 25 slides within the rack guide 32.

[0056] Specifically, the locking buckle bracket 27 is in a "C" - shaped structure, formed by a top plate 33, side plates 34, and a bottom plate 35. The rack guide 32 is provided in the middle of the side plate 34. Two support columns are provided on both sides of the bottom plate 35 to form the positioning bracket 31. Both ends of the shaft of the ratchet wheel 24 are rotatably connected to the tops of the support columns.

[0057] In order to press the binding strap 2, the locking buckle 3 further includes a serrated pressing plate 26. Considering that the thickness of the binding strap 2 may be uneven, in order to better adapt to binding straps 2 of different shapes and press the binding strap 2 firmly, one end of the rack 25 is hinged to the serrated pressing plate 26 through a connecting pin 28, and the other end slides within the rack guide 32. Both ends of the serrated pressing plate 26 are limited between the top plate 33 and the bottom plate 35 of the locking buckle bracket 27. When the rack 25 slides within the rack guide 32, the distance between the serrated pressing plate 26 and the binding strap 2 can be changed, so as to tighten or loosen the binding strap 2. It should be noted that there are gaps between both ends of the serrated pressing plate 26 and the top plate 33 and the bottom plate 35 to avoid interference when the serrated pressing plate 26 deflects. Preferably, a plurality of holes matching the serrated pressing plate 26 are provided on the binding strap 2. By matching the serrated pressing plate 26 with the holes at different positions on the binding strap 2, the binding strap 2 can be pressed more firmly.

[0058] In order to press the adjusted binding strap 2, the locking buckle 3 further includes a spring pressure pin 21, a pawl spring 22, and a pawl 23. The spring pressure pin 21 has a thread and is arranged in the threaded hole of the top plate 33 of the locking buckle bracket 27. The lower end of the spring pressure pin 21 is fixedly connected to one end of the pawl spring 22. The other end of the pawl spring 22 is fixedly connected to one end of the pawl 23. The other end (the tail end of the pawl 23) of the pawl 23 is hinged to the locking buckle bracket 27.

[0059] As another possibility of this embodiment, one end of the pawl spring 22 is connected to the locking buckle bracket 27, and the other end is connected to the front end of the pawl 23. The tail end of the pawl 23 is hinged to the locking buckle bracket 27. Under the action of the pawl spring 22, the pawl 23 is in a rebound state, and the lower end of the spring pressure pin 21 presses against the front end of the pawl 23. When the spring pressure pin 21 moves downward, the pawl 23 can be stuck to the ratchet 24. When the spring pressure pin 21 moves upward, the pawl 23 rebounds and disengages from the ratchet 24 under the action of the pawl spring 22. It should be noted that the front end of the pawl 23 in this embodiment refers to the end of the pawl 23 used to limit the rotation of the ratchet 24.

[0060] The locking buckle 3 also includes a ratchet toggle pin 20 and a thrust pin 29. One end of the ratchet toggle pin 20 is arranged in the hole at the top of the locking buckle bracket 27, and the other end passes through the top plate 33 and is provided with a strip slot. The strip slot is parallel to the rack guide rail 32. The ratchet 24 is provided with an arc-shaped slot. One end of the thrust pin 29 is arranged in the strip slot, and the other end is arranged in the arc-shaped slot of the ratchet 24. As the ratchet toggle pin 20 moves downward, the thrust pin 29 moves in the strip slot at the lower end of the ratchet toggle pin 20, thereby driving the rotation of the ratchet 24. Fig.12 As shown, the gear connected to the ratchet 24 rotates synchronously, thereby driving the rack 25 to move outward, so that the toothed pressure plate 26 presses the bandage 2 tightly.

[0061] It is worth noting that there are multiple arc-shaped slots on the ratchet 24, and the multiple arc-shaped slots are connected but not concentrically arranged, so that when the ratchet toggle pin 20 is pressed down, the thrust pin 29 has a force point at the intersection of two arc-shaped slots, thereby pushing the ratchet 24 to rotate. Preferably, in this embodiment, there are three arc-shaped slots. Preferably, each arc-shaped slot has the same length.

[0062] Furthermore, a spring is provided on the outer periphery of the ratchet pin 20. The spring is provided in the hole of the top plate 33, with one end abutting against the lower end of the pin cap of the ratchet pin 20 and the other end abutting against the bottom of the hole, so that the ratchet pin 20 can rebound under the action of the spring after being pressed.

[0063] In this embodiment, when the pressure spring pin 21 is tightened, the pawl spring 22 is under pressure, pressing the pawl 23 onto the pawl 24. When the ratchet pin 20 is pressed, the ratchet 24 rotates clockwise. When the serrated pressure plate 26 moves to a suitable position, the ratchet 24 cannot be reversed under the action of the pawl 23, and the serrated pressure plate 26 is locked to keep the bandage 2 taut at all times. When the length of the bandage 2 needs to be adjusted, loosen the pressure spring pin 21, pull the pawl 23 away from the ratchet, pull up the ratchet pin 20, and adjust the position of the serrated pressure plate 26. After completion, tighten the spring pressure pin 21.

[0064] In this embodiment, the locking buckle 3 designed with a ratchet pawl and a gear rack is used to adjust the length of the bandage 2, and self-locking is achieved through the ratchet 24 and the pawl 23, which can keep the bandage 2 taut at all times and improve wearing comfort.

[0065] like Figure 2 As shown, the lower end of one side of the thigh support 1 is connected to the upper end of the arc guide rail 7, and the lower end of the arc guide rail 7 is connected to the upper end of the calf support 11 through the linear guide rail 10. The arc guide rail 7 includes a first guide rail portion 71 and a first slider portion 72. The first guide rail portion 71 is arc-shaped, one end of the first slider portion 72 is arranged to slide in the guide rail of the first guide rail portion 71, and the other end is provided with a bearing hole.

[0066] The first guide rail portion 71 is connected to the lower end of one side of the thigh support 1. Specifically, an arc-shaped groove is provided at the lower end of one side of the thigh support 1. The first guide rail portion 71 is set in the arc-shaped groove by screws. The arc-shaped groove of the thigh support 1 and the sliding limitation of the first guide rail portion 71 on the first slider portion 72 limit the rotation angle of the first slider portion 72 relative to the thigh support 1 within a certain range.

[0067] A bearing 12 is provided in the bearing hole at the lower end of the first slider portion 72, and a bearing inner baffle 14 is provided on the inner side of the bearing hole, and the outer ring of the bearing 12 is fixed in the bearing hole through the bearing inner baffle 14. A baffle support pin 9 is provided on the outer side of the bearing hole, and a through hole is provided in the middle of the baffle support pin 9. A baffle support pin fixing screw 13 is provided in the through hole, and one end is connected to the baffle support pin 9, and the other end is connected to the linear guide connection seat 15. The cylindrical portion of the linear guide connection seat 15 is provided in the inner ring of the bearing 12, and the baffle support pin fixing screw 13 is connected to the threaded hole of the cylindrical portion. The linear guide connection seat 15 also includes a connecting portion, and the cylindrical portion is provided on the connecting portion, and the connecting portion is connected to the linear guide 10.

[0068] It is worth noting that the first slider portion 72 includes an upper and lower part, which are connected by a hinge. The upper part of the first slider portion 72 can rotate around the center of the lower part of the first slider portion 72 within a certain angle range. The upper end of the lower part of the first slider portion 72 is a Y-shaped structure, and the Y-shaped structure is used to limit the lower end of the upper part of the first slider portion 72. This structure enables the calf support 11 connected to the arc guide rail 7 to achieve a certain angle of inward and outward rotation. In this embodiment, the upper part of the first slider portion 72 slides in cooperation with the first guide rail portion 71.

[0069] In this embodiment, a baffle support pin 9 and a bearing inner baffle 14 are respectively provided on both sides of the bearing 12. The cylindrical portion of the linear guide connecting seat 15 passes through the bearing inner baffle 14 and is arranged in the inner ring of the bearing 12, and the baffle support pin 9 and the cylindrical portion are connected by the baffle support pin fixing screw 13. While realizing the limiting of the bearing 12, the arc guide 7 and the linear guide 10 are also connected by the linear guide connecting seat 15. The structure is simple and compact.

[0070] like Figure 6 As shown, the linear guide 10 includes a second guide rail portion 101 and a second slider portion 102, the second guide rail portion 101 is vertically arranged and connected to the upper end of the calf support 11 by screws, and the second slider portion 102 cooperates with the second guide rail portion 101 and slides on the second guide rail portion 101. The connecting portion of the linear guide connecting seat 15 is fixedly connected to the second slider portion 102.

[0071] The knee joint rehabilitation sports protection device also includes an elastic connector 8 and a connecting nail, the connecting nail is arranged at the lower end of one side of the thigh support 1 and the upper end of one side of the calf support 11, and is specifically arranged at one side of the connecting arc guide rail 7, and the two ends of the elastic connector 8 are respectively connected to the connecting nail arranged at the lower end of the thigh support 1 and the connecting nail arranged at the upper end of the calf support 11. Preferably, the elastic connector is an elastic rope.

[0072] In order to provide different amounts of assistance, multiple connecting pins are evenly distributed in the horizontal direction. The amount of assistance can be changed by selecting connecting pins at different positions on the thigh support 1 and the calf support 11 and adjusting the tension of the elastic connector 8.

[0073] It is worth noting that the middle part of the elastic connector 8 bypasses the baffle support pin 9. Specifically, the two ends of the spring connector 8 are connected to the connecting pins of the thigh support 1 and the calf support 11. The middle part of the spring connector 8 contacts the front side of the baffle support pin 9 and bears the tension from the elastic connector 8. The front side in this embodiment refers to the knee side.

[0074] As another possibility of this embodiment, an elastic connector 8 is also provided on the other side of the thigh support 1, and a plurality of connecting nails evenly distributed horizontally are provided on the lower end of the other side of the thigh support 1, and a plurality of connecting nails evenly distributed horizontally are provided on the upper end of the other side of the calf support 1, and a baffle support pin 9 is also provided on the upper end of the other side of the calf support 11, and the baffle support pin 9 is higher than the connecting nail provided on the same side of the calf support 11, and the two ends of the elastic connector 8 are respectively connected to the connecting nails, and the middle part bypasses the baffle support pin 9, and the magnitude of the assist can be changed by selecting connecting nails at different positions on the thigh support 1 and the calf support 11 and adjusting the tension of the elastic connector 8. In this embodiment, the elastic connectors 8 provided on both sides of the protective device provide assist together.

[0075] The lower end of the other side of the thigh support 1 is connected to the upper end of the other side of the calf support 11 through a crank 5. Figure 7 As shown, a slot hole is provided at the lower end of the other side of the thigh support 1, one end of the crank 5 is arranged in the slot hole, a joint bearing hole is provided at one end of the crank 5, and a joint bearing 16 is provided inside. The joint bearing 16 is connected to the lower end of the other side of the thigh support 1 through a joint bearing pin 17.

[0076] Taking into account the limiting of the joint bearing pin 17 on the thigh support 1, a retaining spring groove is provided on the joint bearing pin 17, and the retaining spring groove is located on the outer side of the lower end of the thigh support 1. One end of the joint bearing pin 17 passes through the lower end of the thigh support 1 and is limited by the outer retaining spring 18 of the bearing, and the other end is limited by the pin head of the joint bearing pin 17.

[0077] A slot hole is provided at the upper end of the other side of the calf support 11, and the other end of the crank 5 is arranged in the slot hole. A joint bearing hole is provided at the other end of the crank 5, and a joint bearing 16 is provided inside. The joint bearing 16 is connected to the upper end of the other side of the calf support 11 through a joint bearing pin 17.

[0078] Taking into account the limiting of the joint bearing pin 17 on the calf support 11, a retaining spring groove is provided on the joint bearing pin 17, and the retaining spring groove is located on the outer side of the upper end of the calf support 11. One end of the joint bearing pin 17 passes through the upper end of the calf support 11 and is limited by the bearing outer retaining spring 18, and the other end is limited by the pin head of the joint bearing pin 17.

[0079] Considering the limitation of the joint bearing 16 , the joint bearing holes at both ends of the crank 5 are provided with retaining ring grooves, and the inner retaining ring 19 of the bearing is arranged in the retaining ring groove in the joint bearing hole to limit the axial movement of the joint bearing 16 .

[0080] The calf support 11 is a semi-cylindrical structure, and the arc of the semi-cylindrical structure is adapted to the user's calf. Lugs are provided on both sides of the calf support 11, and the lugs are connected to the strap 2. Specifically, one end of the strap 2 is fixedly connected to the lug on one side of the calf support 11 by a rivet, and the other end is connected to the lug on the other side of the calf support 11 by an adjustment locking mechanism, and the adjustment locking mechanism is provided on the lug of the calf support 11.

[0081] In this embodiment, in order to adapt to the wearing of different users, an adjustment locking mechanism is used to adjust the length of the strap 2, and the adjustment locking mechanism only needs to be able to adjust the length of the strap 2.

[0082] In order to ensure that the calf support 11 is firmly connected to the user, a strap 2 is provided at the upper end and the lower end of the calf support 11 respectively.

[0083] In this embodiment, the adjustable locking mechanism is a locking buckle 3, which is fixed to the calf support 11 by rivets. By changing the tightening length of the bandage 2, the calf diameter of the wearer is matched.

[0084] In order to protect the user's legs, the knee joint rehabilitation exercise protection device also includes a thigh protection pad 4 and a calf protection pad 6, which are respectively arranged on the inner side of the lower end of the thigh support 1 and the inner side of the upper end of the calf support 11.

[0085] In this embodiment, the thigh support 1 is fitted to the thigh through the bandage 2 and the thigh protection pad 4, and the calf support 11 is fitted to the calf through the bandage 2 and the calf protection pad 6. The protection pad can buffer the pressure so that the device can better fit the knee joint.

[0086] The knee joint rehabilitation sports protection device includes three directions of movement angles: the internal and external rotation movement angles of the knee in the horizontal plane, the flexion and extension movement angles in the sagittal plane, and the internal and external valgus movement angles in the coronal plane.

[0087] Knee joint rehabilitation sports protection device horizontal plane internal and external rotation angle control: one side of the thigh support 1 is connected to the crank 5 through the joint bearing 16, such as Figure 7 As shown, with the help of the motion characteristics of the joint bearing 16, the connection mode of this side of the device limits the internal and external rotation angles between the thigh support 1 and the calf support 11 to a certain angle; the other side of the thigh support 1 is connected to the arc guide rail 7 by screws, as shown in FIG. Figure 2-Figure 5 As shown, the two ends of the arc guide rail 7 fit with the two ends of the structure of the thigh support 1, limiting the first slider portion 72 to slide around the central axis of the thigh support 1 within a range of ±10°, so that the device can fit the internal and external rotation angles of the knee joint in the horizontal plane.

[0088] Sagittal plane flexion and extension angle control of knee joint rehabilitation sports protection device: One side of the thigh support 1 is connected to the crank 5 through the joint bearing 16, such as Figure 7 As shown, the joint bearing 16 does not limit the rotational freedom around its central axis; the other side of the thigh support 1 is connected to the calf support 11 through the bearing 12, and the bearing 12 also does not limit the rotational freedom around its central axis. The connection method on both sides does not limit the rotational freedom of the knee joint in the sagittal plane, which can ensure that the knee joint moves in a normal gait without affecting the normal flexion and extension freedom. Figure 13-14 As shown, one end of the elastic connector 8 is connected to the connecting pin of the thigh support 1, and is wrapped around the connecting pin on the calf support 11 through the baffle support pin 9 in the middle. When the user wears the device, the elastic connector 8 provides assistance to the knee joint during the flexion and extension of the knee joint.

[0089] Knee joint rehabilitation sports protection device coronal plane inversion and inversion motion angle control: one side of the thigh support 1 is connected to the crank 5 through the joint bearing 16, such as Figure 7As shown, the crank 5 can rotate in the coronal plane through the joint bearing 16, and the rotation range of the deflection angle of the joint bearing 16 is ±6°; the other side of the thigh support 1 is connected to the calf support 11 through the linear guide 10, and in the sagittal plane, the second slider portion 102 can slide along the second guide portion 101, and the upper and lower parts of the first slider portion 72 are hinged, the length of the linear guide 10 is fixed, the sliding range of the second slider portion 102 is fixed, and the valgus and valgus angle of this side in the sagittal plane is fixed. Through the joint bearing 16 and the linear guide 10, the device can limit the valgus and valgus angle of the knee joint in the sagittal plane, thereby protecting the knee joint, such as Figure 15-16 shown.

[0090] Example 2

[0091] Another specific embodiment of the present invention discloses a knee joint rehabilitation exercise protection method, using the knee joint rehabilitation exercise protection device of embodiment 1, the steps include:

[0092] The user wears the protective device and adjusts the length of the bandage 2 and the tension of the elastic connector 8: Specifically, the user wears the protective device, fits the thigh and calf of the user through the thigh bandage 2 and the calf bandage 2, fits the thigh protection pad 4 and the calf protection pad 6 to the knee joint, and adjusts the length of the bandage through the locking buckle 3. The user adjusts the tension of the elastic connector 8 to a suitable size by adjusting the connection rings at both ends of the elastic connector 8 and the connection pins on the thigh support 1 and the connection pins on the calf support 11.

[0093] The crank 5 follows the internal and external rotation of the inner side of the knee joint, and the arc guide rail 7 follows the internal and external rotation of the outer side of the knee joint: specifically, after adjustment is in place, the user completes the wearing, and in the patient's normal walking gait, the joint bearing 16 is matched with the crank 5, and the crank 5 has a certain movement angle in the horizontal plane, which can follow the internal and external rotation of the inner side of the knee joint, and the arc guide rail 7 can follow the internal and external rotation of the outer side of the knee joint. The device can control the internal and external rotation angles of the inner and outer sides of the knee joint within a certain range to prevent damage to the knee joint in the direction of internal and external rotation.

[0094] The protective device follows the movement of the knee joint in the sagittal plane, and the elastic connector 8 provides assistance, and the protective device follows the eversion movement of the knee joint in the coronal plane. Specifically, through the matching connection between the joint bearing 16 and the crank 5, and the matching connection between the linear guide 10 and the bearing 12, the device has a certain movement angle in the sagittal plane, can follow the movement of the knee joint in the sagittal plane, and the elastic connector 8 can provide assistance for the movement of the knee joint, improving the stress condition of the knee joint; through the matching connection between the joint bearing 16 and the crank 5, and the up and down movement of the slider on the linear guide 10 and the guide rail, and the upper and lower parts of the first slider part 72 are hinged, the device has a certain movement angle in the coronal plane, can follow the eversion movement of the knee joint within a certain range, and protect the movement of the knee joint in the coronal plane.

[0095] The knee joint rehabilitation sports protection device of this embodiment utilizes the sliding of the circular arc guide rail 7 and the joint rotation of the joint bearing 16 to make the device follow the knee to perform internal and external rotation movement in the horizontal plane. The limited guide rail stroke and the limited movement angle of the joint bearing 16 can limit the internal and external rotation angle of the knee, so that the movement angle does not exceed 40°, ensuring the stability of the knee joint in the internal and external rotation direction; the connection and cooperation between the bearing 12 and the linear guide rail 7 are utilized to reduce the movement resistance of the device to the human body, and the elastic connector 8 is utilized to provide assistance for the flexion and extension of the knee joint, improve the force condition of the knee joint, and reduce the influence of the device on the normal gait of the human body in the sagittal plane; the joint bearing 16 and the crank 5 are utilized to follow the internal and external rotation movement of the knee joint in the coronal plane, and the limited angle of the joint rotation of the joint bearing 16 and the limited stroke of the linear guide rail 10 are used to limit the internal and external rotation angle of the device, so that the internal and external rotation angle is controlled within 10°, thereby realizing the limitation of the internal and external rotation angle of the knee joint; the locking buckle 3 designed by the ratchet pawl and the gear rack is utilized to adjust the length of the bandage, and the self-locking is achieved by the ratchet pawl, so that the bandage can be kept taut at all times, thereby improving the wearing comfort.

[0096] The present invention utilizes an arc guide rail to follow the internal and external rotation movement of the knee in the horizontal plane, and limits the internal and external rotation angle of the knee through the limited length of the guide rail; utilizes a bearing and a linear guide rail to follow the flexion and extension movement of the knee in the sagittal plane, without affecting the normal flexion and extension freedom of the human knee joint; utilizes a joint bearing and a curved rod to follow the internal and external valgus movement of the knee joint in the coronal plane, and utilizes the limited stroke of the linear guide rail and the limited rotation angle of the joint bearing to limit the internal and external valgus angle of the knee joint; utilizes an elastic connector to provide assistance to the knee joint, which can improve the stress condition of the knee joint; utilizes a locking buckle designed with a ratchet pawl and a gear rack to adjust the length of the bandage, and can achieve self-locking, keep the bandage in a taut state, and improve wearing comfort.

[0097] The present invention can ensure that the knee moves within a normal range, limit the angle range of internal and external rotation, internal and external valgus, and provide a certain amount of assistance to the knee joint. It plays a role in protecting the knee without affecting the normal movement of the knee joint, and can provide a safe and good recovery environment for patients with knee osteoarthritis; it solves the problem that existing bandage products affect the blood circulation of the knee joint, can guide the knee joint to move within a normal and reasonable range, and can accelerate the recovery process of the knee joint.

[0098] 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 changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A knee joint rehabilitation sports protection device, characterized in that: It comprises a thigh support (1), a crank (5), an arc guide rail (7), a linear guide rail (10), a calf support (11) and an adjustment locking mechanism, wherein the lower end of one side of the thigh support (1) is connected to the upper end of one side of the calf support (11) via the arc guide rail (7) and the linear guide rail (10) in sequence, and the lower end of the other side of the thigh support (1) is connected to the upper end of the other side of the calf support (11) via the crank (5), and the adjustment locking mechanism is respectively arranged on the thigh support (1) and the calf support (11); The lower end of one side of the thigh support (1) is connected to the upper end of the circular arc guide rail (7), and the lower end of the circular arc guide rail (7) is connected to the upper end of the calf support (11) through the linear guide rail (10); the lower end of the other side of the thigh support (1) and the upper end of the other side of the calf support (11) are both provided with slots, and the two ends of the crank (5) are arranged in the slots, and the two ends of the crank (5) are provided with joint bearing holes, and the joint bearing holes are provided with joint bearings (16); the joint bearings (16) at both ends of the crank (5) are respectively connected to the lower end of the other side of the thigh support (1) and the upper end of the other side of the calf support (11) through joint bearing pins (17); the thigh support (1) and the calf support (11) are also provided with straps (2), and the adjustment locking mechanism is used to adjust the length of the straps (2); The arc guide rail (7) includes a first guide rail portion (71) and a first slider portion (72), the first guide rail portion (71) is arc-shaped, an arc groove is provided at the lower end of one side of the thigh support (1), the first guide rail portion (71) is arranged in the arc groove by a screw, one end of the first slider portion (72) is arranged in the guide rail of the first guide rail portion (71) to slide, the first slider portion (72) slides around the central axis of the thigh support (1) within a range of ±10°, and a bearing hole is provided at the other end of the first slider portion (72); a bearing (12) is provided in the bearing hole, a bearing inner baffle (14) is provided on the inner side of the bearing hole, and a baffle support pin (9) is provided on the outer side of the bearing hole, and the baffle support pin A through hole is provided in the middle of (9), and a baffle support pin fixing screw (13) is provided in the through hole, one end of the baffle support pin fixing screw (13) is connected to the baffle support pin (9), and the other end is connected to the linear guide connecting seat (15); the linear guide (10) includes a second guide rail portion (101) and a second slider portion (102), the second guide rail portion (101) is vertically arranged and connected to the upper end of the calf support (11), the second slider portion (102) slides on the second guide rail portion (101), the cylindrical portion of the linear guide connecting seat (15) is arranged in the inner ring of the bearing (12), and the connecting portion of the linear guide connecting seat (15) is fixedly connected to the second slider portion (102); The adjusting locking mechanism comprises a ratchet (24), a rack (25), a locking bracket (27), a ratchet toggle pin (20) and a thrust pin (29); the locking bracket (27) is provided with a positioning bracket (31) and a rack guide rail (32); the positioning bracket (31) is perpendicular to the rack guide rail (32); both ends of the axis of the ratchet (24) are arranged on the positioning bracket (31); gears cooperating with the rack (25) are arranged on both sides of the ratchet (24); and the rack (25) slides in the rack guide rail (32); One end of the ratchet push pin (20) is arranged in the hole at the top of the locking buckle bracket (27), and the other end is provided with a strip-shaped slot hole, which is parallel to the rack guide rail (32), and one end of the thrust pin (29) is arranged in the strip-shaped slot hole; an arc-shaped slot hole is opened on the ratchet (24), and the other end of the thrust pin (29) is arranged in the arc-shaped slot hole.

2. The knee joint rehabilitation sports protection device according to claim 1, characterized in that: It also includes a sawtooth pressure plate (26), one end of the rack (25) is hinged to the sawtooth pressure plate (26), and the other end slides in the rack guide rail (32).

3. The knee joint rehabilitation sports protection device according to claim 1, characterized in that: It also includes a spring pressure pin (21), a pawl spring (22) and a pawl (23), wherein the upper end of the spring pressure pin (21) is arranged in a threaded hole at the top of the locking buckle bracket (27), and the lower end can press against the front end of the pawl (23), the rear end of the pawl (23) is hinged to the locking buckle bracket (27), and the pawl spring (22) is connected to the pawl (23) and can make the pawl (23) rebound.

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