Adjustable knee brace

Abstract

The present invention relates to the field of orthopedic medical devices, and more specifically, to an adjustable knee brace. It includes a fixing component, a length adjustment component, and a tension adjustment component. There are several fixing components, which are connected to the length adjustment component. The ends of the two length adjustment components on the same side are matched through gear movement and are rotatably arranged under the knobs of the tension adjustment components. The present invention is easy to wear, has an adjustable length to adapt to patients of different heights, is convenient to adjust for patients with different degrees of illness, is symmetrical up and down, can be used on the outside and inside of the left and right legs, and can be adjusted according to the dynamics of human walking.

Description

Technical Field

[0001] The present invention relates to the field of orthopedic medical devices, and in particular to an adjustable knee joint brace. Background Art

[0002] The knee joint is one of the largest joints in the human body, with the most complex structure and the largest bearing capacity. Knee osteoarthritis (OA) is a common disease that mostly occurs in the middle-aged and elderly population. Secondary knee osteoarthritis can lead to knee varus and knee valgus deformities, which concentrate the force on the bone joint surface and cause abnormal distribution of pressure, thus causing changes in the mobility of the articular cartilage, as well as meniscus tears, ligament injuries, osteomalacia, and chondritis exfoliativa. Because the above symptoms cause the joint to lose its original directional stability, aggravate the varus or valgus of the knee joint, and further increase the pressure concentration on some points of the knee joint surface. Patients feel pain when standing or walking, which brings inconvenience to their lives.

[0003] With the development of an aging society, the incidence of knee osteoarthritis is gradually increasing. In order to relieve the pain of patients and facilitate their daily life and walking, it is necessary to effectively control its symptoms. Existing knee braces have the following defects: they cannot be quickly adjusted in tightness (poor flexibility), are cumbersome to wear, and have little effect in relieving pain. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an adjustable knee brace that can quickly adjust tightness, is easy to wear, and can dynamically adjust the gap between the pressure surfaces of the knee joint to relieve pain in patients.

[0005] The technical solution adopted by the present invention is:

[0006] An adjustable knee brace, comprising a fixing assembly, the fixing assembly having a fixing strap; the brace also comprises two symmetrically arranged length adjustment assemblies, the ends of the two length adjustment assemblies being rotatably matched and connected, the length adjustment assembly comprising a metal bracket and an adjustment frame slidably arranged on the metal bracket, the metal bracket and the adjustment frame being both connected with a fixing strap; and

[0007] The tension adjustment component includes two action straps, a fixed seat, a connecting line and a knob. One end of the action strap is provided with a connector and the other end is provided with a lap joint. The fixed seat is fixed on the metal bracket of the length adjustment component. The lap joint is detachably connected to the fixed seat. One end of the connecting line is connected to the connector and can be slidably passed through the inside of the fixed seat in the middle. The other end is connected to the knob.

[0008] In the above-mentioned adjustable knee brace, the length adjustment component also includes an adjustment button and a reset spring. A gear is provided at one end of the metal bracket, and limited tooth grooves are evenly distributed on the metal bracket at the other end. The adjustment frame can be slidably sleeved on the metal bracket, and two slidable adjustment buttons are provided on both sides of the adjustment frame. A reset spring is provided between the adjustment buttons, and a stop column matching the tooth groove is provided at the end of the adjustment button.

[0009] In the above-mentioned adjustable knee joint brace, the two metal brackets are symmetrically rotatably matched, and the gears at both ends are meshed.

[0010] In the above-mentioned adjustable knee brace, a waist-shaped hole is arranged in the middle of the adjustment button, and a limiting column is arranged at the position of the adjustment frame corresponding to the waist-shaped hole.

[0011] In the above-mentioned adjustable knee brace, the stop column and the adjustment button are L-shaped, and the return spring is above the tooth groove. After pressing the adjustment button, the adjustment frame can slide on the metal bracket, and after releasing it, the stop column is clamped in the corresponding tooth groove.

[0012] In the above-mentioned adjustable knee brace, the knob includes a base, a knob seat, a storage plate, an adjustment sheet, and a knob shell; the base is arranged on the two ends of the two metal brackets, the knob seat is fixed in the middle of the bottom of the base, the storage plate is rotatably placed inside the knob seat, the adjustment sheet is fixed above the storage plate, and the knob shell is buckled on the top of the knob seat; the storage plate is an "I"-shaped rotating body, and the end of the connecting line passes through the base and is fixed in the middle of the storage plate; a number of elastic adjustment ribs are arranged on the adjustment sheet, and the inner ring of the knob seat is provided with evenly distributed triangular teeth that match the ends of the adjustment ribs; a paddle corresponding to the adjustment rib is arranged inside the knob shell.

[0013] In the above-mentioned adjustable knee brace, there are two functional straps which cross each other in an "X" shape, and a soft fabric is fixed at the intersection.

[0014] In the above-mentioned adjustable knee joint brace, the connecting wire is a steel wire.

[0015] In the above-mentioned adjustable knee brace, the fixing assembly includes a lower cover, a fixing strap, a buckle and a fixing buckle; one end of the fixing strap is wrapped around the strip hole on one side of the lower cover, and the other end passes through the square hole of the buckle and is fixed on the connecting buckle of the fixing buckle; the middle part of the buckle is hinged to the end of the fixing buckle, and the elastic buckle of the fixing buckle is detachably clamped on the clamping surface of the buckle; the hook of the buckle is detachably clamped in the through hole on the side of the lower cover.

[0016] In the above-mentioned adjustable knee joint brace, a fixing pad is sleeved on the fixing strap.

[0017] The beneficial effects of the present invention are: easy to wear, adjustable length to accommodate patients of different heights, convenient adjustment for patients with different degrees of illness, symmetrical up and down, usable on the outside and inside of the left and right legs, and adjustable according to the walking dynamics of the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of this product;

[0019] Figure 2 This is a schematic diagram of the fixed component structure of this product;

[0020] Figure 3 for Figure 2 Middle AA section view;

[0021] Figure 4 is a schematic diagram of the structure of the lower cover;

[0022] Figure 5 is a schematic diagram of the structure of the buckle;

[0023] Figure 6 is a schematic diagram of the structure of the fixing buckle;

[0024] Figure 7 is a schematic diagram of the structure of the length adjustment component;

[0025] Figure 8 It is a structural schematic diagram of the tension adjustment component;

[0026] Fig. 9 It is a schematic diagram of the structure of the knob;

[0027] Fig.10 It is a structural schematic diagram of the regulating piece;

[0028] Fig.11 It is the left view of the knob;

[0029] Fig.12 for Fig.11 Middle BB section view;

[0030] Fig.13 It is a schematic diagram of the structure of the knob housing;

[0031] Fig.14 This is a schematic diagram of the forces acting on the point when a person's legs are straightened;

[0032] Fig.15 A schematic diagram of the forces acting on the steel wire and the action straps during the process of bending and straightening a human leg;

[0033] In the figure: 1 fixing component, 11 lower cover, 111 strip hole, 112 through hole, 12 fixing strap, 13 fixing pad, 14 buckle, 15 fixing buckle, 141 square hole, 142 hook, 143 snap-on surface, 151 connecting buckle, 152 elastic buckle, 2 length adjustment component, 21 metal bracket, 211 tooth groove, 22 adjustment frame, 221 limit column, 23 adjustment button, 231 waist hole, 232 stop column, 24 reset spring, 3 tension adjustment component, 31 action strap, 32 connector, 33 fixing seat, 34 lap joint, 35 soft fabric, 36 connecting line, 37 knob, 371 base, 372 knob seat, 3721 triangular tooth, 373 storage tray, 374 adjustment sheet, 3741 adjustment rib, 375 knob shell, 3751 pick. DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the invention.

[0035] like Figure 1 As shown, an adjustable knee brace includes a fixing component 1, a length adjustment component 2, and a tension adjustment component 3. There are a plurality of fixing components 1, and the fixing components 1 are connected to the length adjustment components 2. The ends of the two length adjustment components 2 on the same side are matched through gear movement and are rotatably arranged under the knobs of the tension adjustment components 3 respectively;

[0036] like Figure 2-Figure 6 As shown, the fixing assembly 1 consists of a lower cover 11, a fixing strap 12, a fixing pad 13, a buckle 14 and a fixing buckle 15; one end of the strap 12 is wrapped around the strip hole 111 on one side of the lower cover 11, and the other end passes through the square hole 141 of the buckle 14 and is fixed on the connecting buckle 151 of the fixing buckle 15; the fixing pad 13 is sleeved on the fixing strap 12; the middle part of the buckle 14 is hinged to the end of the fixing buckle 15, and the elastic buckle 152 of the fixing buckle 15 is detachably clamped on the clamping surface 143 of the buckle 14; the hook 142 of the buckle 14 is detachably clamped in the through hole 112 on the side of the lower cover 11.

[0037] like Figure 7As shown, the length adjustment component 2 includes a metal bracket 21, an adjustment frame 22, an adjustment button 23, and a reset spring 24. A gear is provided at one end of the metal bracket 21. The gears at the ends of the two metal brackets 21 are meshed. The metal bracket 21 near the other end is evenly distributed with limited tooth grooves 211. The adjustment frame 22 can be slidably sleeved on the top of the tooth groove 211 of the metal bracket 21. The metal bracket 21 and the adjustment frame 22 are both connected with a fixing strap 12. Two slidable adjustment buttons 23 are provided on both sides of the adjustment frame 22. A reset spring 24 is provided between the adjustment buttons 23. A waist-shaped hole 231 is provided in the middle of the button 23, and a limiting column 221 is provided at the position of the waist-shaped hole 231 of the adjustment frame 22. The limiting column 221 mainly serves to limit the pressing displacement of the adjustment button 23. A stop column 232 matching the tooth groove 211 is provided at the end of the adjustment button 23. The stop column 232 and the adjustment button 23 are L-shaped, and the return spring 24 is above the tooth groove 211. After pressing the adjustment button 23, the adjustment frame 22 can slide on the metal bracket 21. After releasing the adjustment button 23, the stop column 232 is clamped in the corresponding tooth groove 211, thereby completing the length adjustment action.

[0038] like Figure 8-13 As shown, the tension adjustment component 3 includes an action strap 31, a connector 32, a fixing seat 33, a lap joint 34, a soft fabric 35, a connecting line 36, and a knob 37. The knob 37 includes a base 371, a knob seat 372, a storage tray 373, an adjustment sheet 374, and a knob shell 375. The connecting line is usually made of steel wire. One end of the action strap 31 is fixed to the connector 32, and the other end is fixed to the lap joint 34. The fixing seat 33 is fixed to the metal bracket 21 of the length adjustment component 2, and the lap joint 34 is detachably buckled on the fixing seat 33. The action strap 31 has two and crosses each other in an "X" shape, and a soft fabric 35 is fixed at the intersection. One end of the steel wire is fixed to the connector 32, and the middle can slidably pass through the inside of the fixing seat 33, and the other end is fixed The base 371 is arranged on the two ends of the two metal brackets 21 meshing with each other, the knob seat 372 is fixed at the middle of the bottom of the base 371, the storage plate 373 is rotatably placed inside the knob seat 372, the adjustment piece 374 is fixed above the storage plate 373, and the knob shell 375 is buckled above the knob seat 372; the storage plate 373 is an "I"-shaped rotating body, and the end of the steel wire passes through the base 371 and is fixed in the middle of the storage plate 373; the adjustment piece 374 is provided with a plurality of elastic adjustment ribs 3741, and the inner circle of the knob seat 372 is provided with evenly distributed triangular teeth 3721 matching the ends of the adjustment ribs 3741; the knob shell 375 is provided with a paddle 3751 corresponding to the adjustment ribs 3741;

[0039] like Figure 14-15As shown, the wearing and adjustment process is as follows: open the fixing component 1, put the patient's leg with knee pain in, buckle the buckle 14 into the through hole 112 of the lower cover 11, and rotate the fixing buckle 15 to buckle on the buckle 14, so that the brace is fixed; clamp the two lap joints 34 on the fixing seat 33, and rotate the knob 37 of the tension adjustment component 3 to a proper position according to the severity of the patient's knee arthritis; according to the height of different patients, press the adjustment button 23 of the length adjustment component 2, push the adjustment frame 22 to make it slide to a proper position on the metal bracket 21, and release the adjustment button 23 to complete the length adjustment;

[0040] Working principle: When a person walks, the angle between the thigh and calf generally changes dynamically between 135° and 180°. In the process of the thigh and calf angle changing from small to large, the distance from point A to B in the figure becomes larger, and the two steel wires will simultaneously pull the action strap to become tighter. There is a thrust on the human knee joint at the intersection. The metal bracket and the intersection form a three-point mechanical principle. This thrust can increase the gap between the compressed knee joint surfaces, thereby relieving the patient's pain. When the angle between the thigh and calf becomes smaller, the AB distance becomes smaller, and the steel wire and the action strap become loose, thereby forming a dynamic adjustment back and forth.

[0041] The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the present invention without departing from the principle of the present invention. These improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An adjustable knee brace, comprising a fixing assembly (1), wherein the fixing assembly (1) is provided with a fixing strap (12); Features: Also includes, Two symmetrically arranged length adjustment components (2), the ends of the two length adjustment components (2) being rotatably connected, the length adjustment components (2) comprising a metal bracket (21) and an adjustment frame (22) slidably arranged on the metal bracket (21), and the metal bracket (21) and the adjustment frame (22) are both connected to a fixing strap (12); and A tension adjustment component (3), the tension adjustment component comprising two action straps (31), a fixing seat (33), a connecting wire (36) and a knob (37), one end of the action strap (31) being provided with a connector (32) and the other end being provided with a lap joint (34), the fixing seat (33) being fixed on a metal bracket (21) of the length adjustment component (2), the lap joint (34) being detachably connected to the fixing seat (33), one end of the connecting wire (36) being connected to the connector (32), the middle being slidably passed through the interior of the fixing seat (33), and the other end being connected to the knob (37); The length adjustment assembly (2) further comprises an adjustment button (23) and a return spring (24); a gear is provided at one end of the metal bracket (21); a limit tooth groove (211) is evenly distributed on the metal bracket (21) at the other end; the adjustment frame (22) is slidably sleeved on the metal bracket (21); two slidable adjustment buttons (23) are provided on both sides of the adjustment frame (22); a return spring (24) is provided between the adjustment buttons (23); and a stop column (232) matched with the tooth groove (211) is provided at the end of the adjustment button (23); The two metal brackets (21) are symmetrically rotatable and matched, and the gears at both ends are meshed; A waist-shaped hole (231) is provided in the middle of the adjustment button (23), and a limiting column (221) is provided on the adjustment frame (22) at a position corresponding to the waist-shaped hole (231); The stop post (232) and the adjustment button (23) are L-shaped, and the return spring (24) is on the tooth groove (211). After the adjustment button (23) is pressed, the adjustment frame (22) can slide on the metal bracket (21), and after the stop post (232) is released, it is snapped into the corresponding tooth groove (211); The knob (37) comprises a base (371), a knob seat (372), a storage tray (373), an adjustment sheet (374), and a knob shell (375); the base (371) is arranged on two ends of two metal brackets (21); the knob seat (372) is fixed to the middle of the bottom of the base (371); the storage tray (373) is rotatably placed inside the knob seat (372); the adjustment sheet (374) is fixed above the storage tray (373); and the knob shell (375) is buckled on the knob seat. (372); the storage tray (373) is an "I"-shaped rotating body, and the end of the connecting line (36) passes through the base (371) and is fixed to the middle of the storage tray (373); a plurality of elastic adjustment ribs (3741) are provided on the adjustment plate (374), and the inner circle of the knob seat (372) is provided with evenly distributed triangular teeth (3721) matching the ends of the adjustment ribs (3741); and a paddle (3751) corresponding to the adjustment ribs (3741) is provided inside the knob shell (375).

2. The adjustable knee brace according to claim 1, Features: The functional binding straps (31) are provided in two pieces and cross each other in an "X" shape, with a soft fabric (35) being fixed at the intersection.

3. The adjustable knee brace according to claim 1, Features: The connecting wire (36) is a steel wire.

4. The adjustable knee brace according to claim 1, Features: The fixing assembly (1) comprises a lower cover (11), a fixing strap (12), a buckle (14) and a fixing buckle (15); one end of the fixing strap (12) is wound around a strip hole (111) on one side of the lower cover (11), and the other end passes through a square hole (141) of the buckle (14) and is fixed to a connecting buckle (151) of the fixing buckle (15); the middle part of the buckle (14) is hinged to the end of the fixing buckle (15), and the elastic buckle (152) of the fixing buckle (15) is detachably clamped on a clamping surface (143) of the buckle (14); and the hook (142) of the buckle (14) is detachably clamped in a through hole (112) on the side of the lower cover (11).

5. The adjustable knee brace according to claim 4, Features: A fixing pad (13) is sleeved on the fixing strap (12).

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