Knee joint brace

Abstract

The utility model provides a knee joint brace which comprises a first rod body and a second rod body, one end of the first rod body is concaved inwards to form a clamping cavity, one end of the second rod body is provided with a rotating disc, the rotating disc is rotatably connected in the clamping cavity, a limiting rod is rotatably connected in the clamping cavity, the top of the rotating disc is provided with a limiting baffle, and one end of the limiting rod abuts against the limiting baffle. The end, facing the limiting baffle, of the limiting rod is connected with an operating rod, the operating rod protrudes out of the clamping cavity, the end, back to the limiting rod, of the operating rod is rotationally connected with a safety buckle, one side wall of the first rod body is connected with a limiting protruding block, and the safety buckle abuts against the outer side wall of the first rod body and the limiting protruding block. By arranging the safety buckle, when the operating rod is touched by mistake, the outer side wall of the first rod body provides limiting force in the horizontal direction, the limiting protruding block provides limiting force in the vertical direction, the operating rod is limited to rotate towards the first rod body, the situation of accidental unlocking caused by mistaken touch is avoided, and potential safety hazards in the using process are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, especially a knee joint brace. BACKGROUND

[0002] The knee joint brace is a medical brace applied to postoperative rehabilitation of knee joint, which has the characteristics of lightness and breathability and can replace the fixing mode of traditional plaster.

[0003] The knee joint brace is usually provided with a joint lock, which ensures that the knee joint brace can maintain the straight state when the patient stands and provides sufficient standing support force for the patient. After the joint lock is released, the bending degree of the knee joint brace can be adjusted to realize squatting and other actions.

[0004] However, the existing joint lock is prone to accidental unlocking due to accidental touch during use, which poses a significant safety hazard to patients who rely on the knee joint brace to maintain the stability of the knee joint. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model aims to provide a knee joint brace to solve the technical problem that the joint lock of the knee joint brace in the prior art is prone to accidental unlocking due to accidental touch during use, which poses a safety hazard to patients who rely on the knee joint brace to maintain the stability of the knee joint.

[0006] In order to achieve the above-mentioned purpose, the utility model is realized by the following technical scheme:

[0007] A knee joint brace, comprising a first rod body and a second rod body, one end of the first rod body is recessed to form a clamping cavity, one end of the second rod body is provided with a rotating disc, the rotating disc is rotationally connected in the clamping cavity, a limiting rod is rotationally connected in the clamping cavity, the top of the rotating disc is provided with a limiting baffle, one end of the limiting rod abuts against the limiting baffle, one end of the limiting rod towards the limiting baffle is connected with an operating rod, the operating rod protrudes out of the clamping cavity, one end of the operating rod away from the limiting rod is rotationally connected with a safety catch, one side wall of the first rod body is provided with a connecting limiting protrusion, one end of the safety catch away from the operating rod abuts against the outer side wall of the first rod body and the limiting protrusion.

[0008] The beneficial effect of the utility model compared with prior art lies in: the bottom of the limiting rod abuts against the rotating disc, one end of the limiting rod abuts against the limiting baffle, the rotation of the rotating disc is limited, the first rod body and the second rod body are ensured to be in straight state, the operating rod is pulled, the limiting rod is rotated to the direction away from the rotating disc, and then the limiting rod is separated from the limiting baffle, at this time, the bending function can be realized by rotating the rotating disc; the safety buckle is arranged on the operating rod, when the first rod body and the second rod body are in straight state, the safety buckle abuts against the limiting protrusion, when the operating rod is touched by mistake and is rotated to the first rod body direction, the outer side wall of the first rod body provides horizontal direction limiting force, the limiting protrusion provides vertical direction limiting force, the rotation of the operating rod to the first rod body direction is limited, and then the rotation of the limiting rod to the direction away from the rotating disc is limited, the situation of accidental unlocking caused by mistake is avoided, the stability of the knee joint brace when supporting standing is ensured, and the security risk during use is reduced; when further bending is needed, only the safety buckle needs to be controlled to rotate to the direction away from the first rod body, so that the safety buckle is separated from the limiting protrusion, and the operating rod is unlocked.

[0009] Further, a rotating shaft is arranged in the clamping cavity, and one end of the limiting rod away from the limiting baffle is sleeved on the rotating shaft.

[0010] Further, a return spring is arranged in the clamping cavity, one end of the return spring is connected to the top of the clamping cavity, the other end of the return spring is connected to the limiting rod, a control mechanism is arranged between the operating rod and the safety buckle, and the control mechanism is used for rotating the safety buckle to the first rod body direction.

[0011] Further, the control mechanism comprises two supporting rods, the two supporting rods are located on the opposite sides of the operating rod, and the two supporting rods are located between the limiting rod and the safety buckle, an elastic stretching piece is sleeved on each of the two supporting rods, the safety buckle comprises an abutting block and two extension rods, the opposite sides of the abutting block are connected to the two extension rods, one end of the two extension rods away from the abutting block is rotationally connected to the opposite sides of the operating rod, a cavity is formed between the two extension rods, a cross rod is arranged in the cavity, and the opposite ends of the cross rod are connected to the two extension rods, and one end of the elastic stretching piece away from the supporting rod is sleeved on the cross rod.

[0012] Further, one end of the supporting rod away from the operating rod is connected to a limiting ring, and the diameter of the limiting ring is greater than the diameter of the supporting rod.

[0013] Further, a driving mechanism is arranged on the abutting block, and the driving mechanism is used for driving the safety buckle to rotate to the direction away from the first rod body.

[0014] Further, the driving mechanism comprises a pull rope and a lock catch, the lock catch is provided with a first lock hole and a second lock hole, a through hole penetrating the abutting block is formed on the abutting block, and one end of the pull rope sequentially penetrates the first lock hole, the through hole and the cavity and is arranged in the second lock hole.

[0015] Further, one side of the limiting rod towards the limiting baffle is formed with a first circular arc surface, and one side of the limiting baffle towards the limiting rod is formed with a second circular arc surface matched with the first circular arc surface. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the knee joint brace in the embodiment of the utility model;

[0017] Figure 2 It is an internal structure schematic view of the knee joint brace in the embodiment of the utility model;

[0018] Figure 3 It is a partial disassembly connection structure schematic view between the rotating disc and the first rod body in the knee joint brace in the embodiment of the utility model;

[0019] Figure 4 It is a connection structure schematic view between the driving mechanism, the safety catch, the operating rod, the limiting rod and the limiting baffle in the knee joint brace in the embodiment of the utility model;

[0020] Figure 5 It is a structure schematic view of the safety catch in the knee joint brace in the embodiment of the utility model;

[0021] Main element symbol explanation:

[0022] 10, first rod body; 110, clamping cavity; 111, rotating groove; 120, rotating shaft; 130, return spring; 20, second rod body; 210, rotating disc; 211, rotating rod; 212, screwing groove; 220, limiting baffle; 310, limiting rod; 320, operating rod; 40, safety catch; 410, abutting block; 420, extension rod; 430, cross rod; 50, limiting protrusion; 60, control mechanism; 610, elastic stretching piece; 620, limiting ring; 70, driving mechanism; 710, pull rope; 720, lock catch; 80, fixing screw.

[0023] The following specific embodiments will further illustrate the utility model in combination with the above drawings. Specific embodiments

[0024] For the convenience of understanding the utility model, the utility model will be described more fully below with reference to the relevant drawings. The drawings show several embodiments of the utility model. However, the utility model can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0025] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0027] Please refer to Figures 1 to 5 The knee joint brace in the embodiment of the utility model, including first pole body 10 and second pole body 20, first pole body 10 is used to connect the thigh side of patient, second pole body 20 is used to connect the shank side of patient, the one end of first pole body 10 is recessed and forms the joint cavity 110, the one end of second pole body 20 is provided with rotating disc 210, rotating disc 210 is rotatably connected in joint cavity 110, it can be understood that, the opposite side wall of joint cavity 110 is recessed and forms rotating groove 111, the opposite two sides of rotating disc 210 are provided with rotating rod 211, rotating rod 211 is rotatably connected in rotating groove 111, to realize the rotatable connection between first pole body 10 and second pole body 20, it can be understood that, two rotating rods 211 are all located at the axis of rotating disc 210, preferably, rotating groove 111 penetrates first pole body 10, the one side of rotating rod 211 away from rotating disc 210 is recessed and forms screw groove 212, screw groove 212 is used to connect fixed screw 80, to ensure the connection stability between first pole body 10 and second pole body 20.

[0028] The rotating connecting limiting rod 310 is arranged in the clamping cavity 110, the top of the rotating disc 210 is provided with a limiting baffle 220 which is integrally formed with the rotating disc 210, one end of the limiting rod 310 abuts against the limiting baffle 220, specifically, the limiting rod 310 is located between the top of the rotating disc 210 and the clamping cavity 110, a rotating shaft 120 is arranged in the clamping cavity 110, the end of the limiting rod 310 away from the limiting baffle 220 is sleeved on the rotating shaft 120, the end of the limiting rod 310 towards the limiting baffle 220 is connected with an operating rod 320, the operating rod 320 protrudes out of the clamping cavity 110, and it can be understood that one side wall of the clamping cavity 110 penetrates through the first rod body 10 and is in communication with the outside, so that the operating rod 320 protrudes into the clamping cavity 110. The end of the limiting rod 310 abuts against the limiting baffle 220, limiting the rotation of the rotating disc 210, ensuring that the first rod body 10 and the second rod body 20 are in a straight state, pulling the operating rod 320 makes the limiting rod 310 rotate away from the rotating disc 210, and then makes the limiting rod 310 disengage from the limiting baffle 220, at this time, the bending function can be realized by rotating the rotating disc 210. Preferably, the bottom of the limiting rod 310 abuts against the rotating disc 210, and by abutting against the rotating disc 210, the stability of the structure can be further improved.

[0029] The end of the operating rod 320 away from the limiting rod 310 is rotationally connected with a safety buckle 40, one side wall of the first rod body 10 is provided with a connecting limiting protrusion 50, and the end of the safety buckle 40 away from the operating rod 320 abuts against the outer side wall of the first rod body 10 and the limiting protrusion 50. In some embodiments, a gap is formed between the safety buckle 40 and the limiting protrusion 50, and by arranging the gap, the rotation of the safety buckle 40 away from the first rod body 10 can be more smooth. It can be understood that the length of the gap is less than the height of the limiting baffle 220, so as to avoid that too large displacement distance causes the limiting rod 310 to disengage from the limiting baffle 220. In this embodiment, the limiting protrusion 50 is detachably connected with the first rod body 10, specifically, the limiting protrusion 50 is screwed on the first rod body 10.

[0030] By providing the safety buckle 40 on the operating lever 320, when the first lever 10 and the second lever 20 are in the straightened state, the safety buckle 40 abuts against the limiting protrusion 50. When the operating lever 320 is accidentally touched and rotates towards the first lever 10, the outer wall of the first lever 10 provides a horizontal limiting force, and the limiting protrusion 50 provides a vertical limiting force, restricting the operating lever 320 from rotating towards the first lever 10, thereby restricting the limiting lever 310 from rotating away from the turntable 210. This avoids accidental unlocking caused by accidental touch, ensures the stability of the knee brace when supporting standing, and reduces safety hazards during use. When bending is required, simply control the safety buckle 40 to rotate away from the first lever 10 to disengage it from the limiting protrusion 50, and unlock it via the operating lever 320.

[0031] A return spring 130 is provided inside the snap-fit ​​cavity 110. One end of the return spring 130 is connected to the top of the snap-fit ​​cavity 110, and the other end is connected to the limiting rod 310. A control mechanism 60 is provided between the operating rod 320 and the safety buckle 40. The control mechanism 60 is used to rotate the safety buckle 40 towards the first rod body 10. After the first rod body 10 and the second rod body 20 return from a bent state to a straight state, the return spring 130 provides a restoring force, causing the limiting rod... 310 rotates towards the turntable 210, re-abutting against the limiting baffle 220 and the top of the turntable 210, achieving a self-locking function. Further, after the limiting rod 310 returns to its original position, the control mechanism 60 controls the safety buckle 40 to rotate towards the first rod body 10. The return of the limiting rod 310 lowers the position of the safety buckle 40, causing the end of the safety buckle 40 facing away from the operating rod 320 to re-abut against the outer wall of the first rod body 10 and the limiting protrusion 50, further mitigating the risk of accidental activation. Preferably, the side of the limiting rod 310 facing the limiting baffle 220 forms a first arc surface, and the side of the limiting baffle 220 facing the limiting rod 310 forms a second arc surface adapted to the first arc surface. By setting the first and second arc surfaces, the contact or disengagement between the limiting rod 310 and the limiting baffle 220 can be made smoother through the arc surface cooperation between them.

[0032] Specifically, the control mechanism 60 comprises two support rods, which are located on opposite sides of the operating rod 320 and between the limiting rod 310 and the safety buckle 40. In this embodiment, the support rods are integrally formed with the operating rod 320. The two support rods are sleeved with elastic tension members 610. Preferably, the ends of the support rods away from the operating rod 320 are connected with limiting rings 620, which have a larger diameter than the support rods. The limiting rings 620 can prevent the elastic tension members 610 from being detached from the support rods, thereby ensuring the stability of the structure. Preferably, the elastic tension members 610 are tension springs or elastic bands.

[0033] The safety buckle 40 comprises an abutting block 410 and two extension rods 420. The opposite sides of the abutting block 410 are connected with the two extension rods 420. The end of the abutting block 410 away from the extension rods 420 abuts against the outer sidewall of the limiting protrusion 50 and the first rod body 10. The ends of the two extension rods 420 away from the abutting block 410 are rotationally connected to the opposite sides of the operating rod 320. The two extension rods 420 form a cavity therebetween. A cross rod 430 is arranged in the cavity. The opposite ends of the cross rod 430 are connected with the two extension rods 420. The end of the elastic tension member 610 away from the support rod is sleeved on the cross rod 430. After the knee brace recovers from the bent state to the straightened state, the position of the operating rod 320 is lowered. The elastic tension member 610 pulls the cross rod 430, thereby driving the abutting block 410 to reset.

[0034] In some embodiments, the control mechanism 60 comprises an elastic control member, which is a tension spring or an elastic band. A through hole is formed in the operating rod 320 and extends through the operating rod 320. The through hole is located between the limiting rod 310 and the safety buckle 40. One end of the elastic control member is sleeved on the cross rod 430. The other end of the elastic control member passes through the through hole and is sleeved on the cross rod 430.

[0035] The abutting block 410 is provided with a driving mechanism 70, which is used to drive the safety buckle 40 to rotate in the direction away from the first rod body 10. Specifically, the driving mechanism 70 comprises a pull rope 710 and a lock catch 720, the lock catch 720 is provided with a first lock hole and a second lock hole, the abutting block 410 is provided with a through hole penetrating through the abutting block 410, one end of the pull rope 710 penetrates through the first lock hole, the through hole and the cavity in sequence and is arranged in the second lock hole. Understandably, by pulling the pull rope 710, the safety buckle 40 can be driven to move in the direction away from the first rod body 10. Since the knee brace is usually worn inside the trousers, by arranging the pull rope 710, the unlocking operation of the trousers can be realized, the safety is increased, the practicability is improved, and the control mechanism 60 is matched with the driving mechanism 70, so that the lock can be automatically opened and closed without increasing additional operation, the portability is improved.

[0036] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The above-described embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A knee joint brace, comprising a first rod and a second rod, characterized in that, One end of the first rod is recessed to form a snap-fit ​​cavity. One end of the second rod is provided with a turntable, which is rotatably connected to the snap-fit ​​cavity. A limiting rod is rotatably connected inside the snap-fit ​​cavity. A limiting baffle is provided on the top of the turntable. One end of the limiting rod abuts against the limiting baffle. The end of the limiting rod facing the limiting baffle is connected to an operating rod. The operating rod protrudes outside the snap-fit ​​cavity. A safety buckle is rotatably connected to the end of the operating rod facing away from the limiting rod. A connecting limiting protrusion is provided on one side wall of the first rod. The end of the safety buckle facing away from the operating rod abuts against the outer side wall of the first rod and the limiting protrusion.

2. The knee brace according to claim 1, characterized in that, A rotating shaft is provided inside the snap-fit ​​cavity, and the end of the limiting rod facing away from the limiting baffle is sleeved on the rotating shaft.

3. The knee brace according to claim 1, characterized in that, A return spring is provided inside the snap-fit ​​cavity. One end of the return spring is connected to the top of the snap-fit ​​cavity, and the other end of the return spring is connected to the limiting rod. A control mechanism is provided between the operating rod and the safety buckle. The control mechanism is used to rotate the safety buckle toward the first rod body.

4. The knee brace according to claim 3, characterized in that, The control mechanism includes two support rods located on opposite sides of the operating lever, and positioned between the limiting rod and the safety buckle. Each support rod is fitted with an elastic tension member. The safety buckle includes an abutment block and two extension rods. The two extension rods are connected to opposite sides of the abutment block, and one end of each extension rod facing away from the abutment block is rotatably connected to opposite sides of the operating lever. A cavity is formed between the two extension rods, and a crossbar is installed within the cavity. The two ends of the crossbar are connected to opposite ends of the two extension rods, and one end of the elastic tension member facing away from the support rod is fitted onto the crossbar.

5. The knee brace according to claim 4, characterized in that, The end of the support rod facing away from the operating rod is connected to a limiting ring, and the diameter of the limiting ring is larger than the diameter of the support rod.

6. The knee brace according to claim 4, characterized in that, A driving mechanism is provided on the abutment block, which is used to drive the safety buckle to rotate in the direction away from the first rod.

7. The knee brace according to claim 6, characterized in that, The driving mechanism includes a pull rope and a buckle. The buckle is provided with a first lock hole and a second lock hole. The abutment block has a through hole that passes through the abutment block. One end of the pull rope passes through the first lock hole, the through hole and the cavity in sequence, and is placed in the second lock hole.

8. The knee brace according to claim 1, characterized in that, The side of the limiting rod facing the limiting baffle forms a first arc surface, and the side of the limiting baffle facing the limiting rod forms a second arc surface that matches the first arc surface.

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