CN218943624U - Anterior cruciate ligament fixed bolster - Google Patents
Anterior cruciate ligament fixed bolster Download PDFInfo
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- CN218943624U CN218943624U CN202320181087.1U CN202320181087U CN218943624U CN 218943624 U CN218943624 U CN 218943624U CN 202320181087 U CN202320181087 U CN 202320181087U CN 218943624 U CN218943624 U CN 218943624U
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- support
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Abstract
The utility model discloses an anterior cruciate ligament fixing bracket, which relates to the technical field of medical appliances and comprises a bracket, a wearing piece and a push plate assembly; the bracket comprises a thigh bracket, a shank bracket and a connecting component, wherein the thigh bracket is rotationally connected with the shank bracket through the connecting component; the wearing piece is connected with the bracket and is used for wearing the lower leg bracket on the lower leg and/or wearing the thigh bracket on the thigh; the push plate assembly is connected with the thigh support and comprises a fixing plate which is used for supporting the rear side of the thigh. The anterior cruciate ligament fixation support disclosed by the utility model can assist in supporting the rear side of the thigh, retrieving the tension of the anterior cruciate ligament, and further assisting in rapid recovery of the injured anterior cruciate ligament.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to an anterior cruciate ligament fixing bracket.
Background
The mechanical action of the Anterior Cruciate Ligament (ACL) is mainly to limit tibial hyperanterior movement, limit knee hyperextension, and maintain knee stability. After the anterior cruciate ligament is injured, the existing method generally uses a rigid support or gypsum for fixation, but after the rigid support or gypsum is used for fixation, the anterior cruciate ligament is not moved for a long time, so that the problems of wide intra-articular adhesion, contracture of muscles and tendon tissues and the like are easily caused, and even the normal movement of the knee joint is affected to cause joint dysfunction, such as knee joint dysfunction, muscle strength reduction, instability and limited joint movement, and the like, so that the treatment time of a patient is prolonged and the rehabilitation cost of the patient is increased.
In view of this, there is a need for an anterior cruciate ligament fixation device to help a wounded recover an injured anterior cruciate ligament more quickly.
Disclosure of Invention
(one) solving the technical problems
The utility model provides an anterior cruciate ligament fixing bracket, which at least solves the problem that the anterior cruciate ligament cannot move due to the fact that the anterior cruciate ligament is fixed by the existing rigid bracket or gypsum, and can help the anterior cruciate ligament of a patient to recover as soon as possible.
(II) technical scheme
In order to solve the technical problems, the utility model provides the following technical scheme:
an anterior cruciate ligament fixation stent, comprising:
the support comprises a thigh support, a shank support and a connecting assembly, wherein the thigh support is rotationally connected with the shank support through the connecting assembly;
a wearing piece connected with the bracket and used for wearing the lower leg bracket on the lower leg and/or wearing the thigh bracket on the thigh;
and the push plate assembly is connected with the thigh support and comprises a fixing plate which is used for supporting the rear side of the thigh.
In the scheme of further setting up, upper and lower wire casing has been seted up to the fixed plate, the push pedal subassembly still includes pressure adjusting device, pressure adjusting device includes:
the bracket seat is fixedly connected with the thigh bracket, and a pin shaft and a return spring are arranged in the bracket seat;
the knob seat is provided with a first through hole and a second through hole;
the steel wire rope wheel is rotationally connected to the knob seat and is provided with a third through hole and a fourth through hole;
the bottom cover is fixed with the knob seat through a screw and comprises a boss which is arranged on the bracket seat in a sliding manner;
the steel wire rope penetrates through the upper wire groove and the lower wire groove of the fixed plate, the two ends of the steel wire rope are respectively fixed with the third through hole and the fourth through hole of the steel wire rope reel through the first through hole and the second through hole of the torsion selecting seat, and the steel wire rope is arranged between the bottom cover and the knob seat in a sliding manner;
the ratchet wheel is fixed with the steel wire rope wheel and the knob seat into a whole;
the spring wire is clamped in the ratchet wheel;
the lifting sleeve is connected with the ratchet wheel through a screw;
the knob is connected with the ratchet wheel through a buckle.
In a further arrangement, the bracket seat includes an interconnecting wide aperture and a narrow aperture, and the boss is slidably disposed between the wide aperture and the narrow aperture.
In a further arrangement, the connection assembly comprises:
the rotary fixing piece is positioned at one side of the thigh bracket and the shank bracket;
the upper cover of the fixing piece is positioned on the other sides of the thigh bracket and the shank bracket and is fixedly connected with the rotating fixing piece;
the adjusting gaskets are positioned between the two sides of the thigh support and the shank support and between the rotating fixing piece and the upper cover of the fixing piece;
the thigh support and the shank support are rotatably connected between the rotary fixing piece and the fixing piece upper cover through the rotary supporting component.
In a further arrangement, the thigh support and the shank support comprise gear teeth, the centers of which coincide with the center of rotation of the thigh support or shank support, and the gear teeth of the thigh support and the shank support are intermeshed.
In a further arrangement, the wearing part is a bandage.
In a further arrangement, the wearing part and the bandage are connected by a snap device comprising:
the clamping seat comprises a clamping block and is provided with a clamping through hole;
the button is movably arranged on the buckle seat, the movable position of the button comprises a through position, and a button through hole is formed;
the buckle box is connected with the buckle seat and comprises a convex block, the convex block is movably arranged relative to the buckle through hole and the button through hole, a locking buckle seat and a notch of the buckle box are formed, and the buckle box is also provided with a clamping hole which is matched and clamped with the clamping block;
the return spring is arranged between the button and the buckle seat;
wherein, in the through position, the button through hole is communicated with the buckle through hole.
(III) beneficial effects
Compared with the prior art, the anterior cruciate ligament fixing bracket provided by the utility model has the following beneficial effects:
when the anterior cruciate ligament fixing support works, the thigh support is connected to the thigh of a patient through the wearing piece, the shank support is connected to the shank of the patient, and the thigh support and the shank support can relatively rotate through the connecting component; wherein, the fixed plate of push pedal subassembly supports in the thigh rear side, compares traditional band, and its thrust increases, and thrust direction acts on anterior cruciate ligament, can reduce anterior cruciate ligament tension, helps resume knee joint shin bone and thighbone position. It can be seen that the anterior cruciate ligament fixation stent of the present utility model can assist in supporting the posterior thigh, retrieving anterior cruciate ligament tension, and thus assisting in rapid recovery of injured anterior cruciate ligament.
Drawings
FIG. 1 is a schematic view of an anterior cruciate ligament fixation stent in an embodiment;
FIG. 2 is a schematic view showing the assembly of the anterior cruciate ligament fixation stent without the bandage in an embodiment;
FIG. 3 is a schematic view showing the assembly of a bandaged anterior cruciate ligament fixation stent according to an embodiment;
FIG. 4 is a schematic view of a left side bracket portion of an anterior cruciate ligament fixation bracket according to an embodiment;
FIG. 5 is a schematic view showing the construction of a right side bracket portion of an anterior cruciate ligament fixation bracket according to an embodiment;
FIG. 6 is a perspective view of a fixing plate in the embodiment;
FIG. 7 is a perspective view of a bracket base in an embodiment;
FIG. 8 is a perspective view of the bottom cover in the embodiment;
FIG. 9 is a perspective view of a knob seat according to an embodiment;
fig. 10 is a perspective view of a wire rope reel in an embodiment;
FIG. 11 is a cross-sectional view of a cartridge having a latch base portion of a latch device in an embodiment;
fig. 12 is a cross-sectional view of the snap seat of the snap device fully snapped into the snap box in an embodiment.
Reference numerals: the support 1, push plate assembly 10, rotational mount 101, adjustment washer 102, thigh support 103, rotational mount upper cover 104, calf support 105, rotational support assembly 106, rivet shaft 107, screw 108, bushing 109, washer 110, wire rope 111, rivet 112, mounting plate pad 113, mounting plate 114, support seat 115, bottom cover 116, knob seat a117, wire rope reel 118, nut 119, support screw 120, bandage ring 121, pad support 122, ratchet 123, lifting sleeve 124, spring wire 125, first screw 126, knob 127, knob seat B128, second screw 129, pin 130, return spring 131, snap through hole 201, clip block 202, button through hole 203, tab 204, notch 205, clip hole 206, perforation 207, snap device 300, snap seat 301, snap box 302, button 303, return spring 304, joint pad 401, wear member 402, thigh support pad 403, calf support pad 404, gear tooth 1000, wire slot 1140, wide hole 1151, narrow hole 2, boss 1160, first through hole 1171, second through hole 1172, third through hole 1151, and fourth through hole 1152.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
The existing ferry vehicle has certain delay in the sensing and feedback process of the position sensor, and the delay causes the problem that the ferry vehicle a is difficult to accurately walk to a preset position, so that the ferry vehicle cannot be accurately docked with a walking track.
In order to solve the above-mentioned problems, please refer to fig. 1, 2, 3 and 4, wherein fig. 1 is a schematic view of an anterior cruciate ligament fixing stent according to an embodiment, fig. 2 is a perspective view of an anterior cruciate ligament fixing stent according to an embodiment, fig. 3 is a top view of an anterior cruciate ligament fixing stent according to an embodiment, and fig. 4 is a top view of an anterior cruciate ligament fixing stent according to an embodiment.
The present embodiment provides an anterior cruciate ligament fixation stent, comprising: the support 1, the wear member 402 and the pusher plate assembly 10.
The bracket 1, the bracket 1 comprises a thigh bracket 103, a shank bracket 105 and a connecting assembly, wherein the thigh bracket 103 is rotatably connected with the shank bracket 105 through the connecting assembly.
The support 1 is connected to the thigh and shank, and serves as a mounting carrier for the wearing member 402 and the push plate assembly 10, wherein the thigh and shank supports can be formed in a partially arc-shaped structure according to an ergonomic design.
A wearing piece 402 connected to the bracket 1 for wearing the lower leg supporter 105 on the lower leg and/or wearing the thigh supporter 103 on the thigh.
The wearing part 402 may be a bandage, a belt, a velcro, or other connecting parts capable of connecting the bracket to the thigh and the calf.
The push plate assembly 10 is coupled to the thigh support 103 and includes a mounting plate 114, the mounting plate 114 for supporting the rear thigh.
The push plate assembly 10 described above uses thigh support as a mounting carrier and is used to support the posterior thigh to reduce anterior cruciate ligament tension.
When the anterior cruciate ligament fixation support in the above technical scheme works, the thigh support 103 is connected to the thigh of a patient through the wearing piece 402, the shank support 105 is connected to the shank of the patient, and the thigh support 103 and the shank support 105 can relatively rotate through the connecting component; wherein the fixation plate 114 of the push plate assembly 10 is supported on the posterior thigh, with increased thrust as compared to conventional straps, and the thrust direction acts on the anterior cruciate ligament, which reduces the anterior cruciate ligament tension and helps to restore the knee tibial and femoral positions. It can be seen that the anterior cruciate ligament fixation stent of the present utility model can assist in supporting the posterior thigh, retrieving anterior cruciate ligament tension, and thus assisting in rapid recovery of injured anterior cruciate ligament.
In one embodiment where the push plate assembly 10 is coupled to the thigh support 103, the mounting plate 114 defines upper and lower wire slots 1140, and the push plate assembly 10 further includes a pressure adjustment device comprising: wire rope 111, support seat 115, bottom 116, knob seat A117, wire rope reel 118, ratchet 123, lifting cover 124, spring wire 125, first screw 126, knob 127, knob seat B128, second screw 129. The bracket seat 115 is fixed on two sides of the thigh bracket 103 through bracket screws 120, and a pin shaft 130 and a return spring 131 are arranged in the bracket seat; the knob seat A117 is provided with a first through hole 1171 and a second through hole 1172; the wire rope wheel 118 is rotatably connected to the knob seat a117, for example, is sleeved on a cylinder on the knob seat a117, and is provided with a third through hole 1181 and a fourth through hole 1182; the bottom cover 116 is fixed with the knob seat A117 through a second screw 129 and comprises a boss 1160, and the boss 1160 is arranged on the bracket seat 115 in a sliding manner; two steel wire ropes 111 are arranged, one steel wire rope 111 passes through the upper and lower wire grooves 1140 of the fixed plate 114, two ends of the steel wire rope 111 are respectively fixed with a third through hole 1181 and a fourth through hole 1182 of the steel wire rope reel 118 through a first through hole 1171 and a second through hole 1172 of the torsion seat, and the steel wire rope 111 is arranged between the bottom cover 116 and the knob seat A117 in a sliding manner; the ratchet wheel 123 is fixed with the wire rope wheel 118 and the knob seat A117 into a whole; spring wire 125 is snapped into ratchet 123; the lifting sleeve 124 is connected with the ratchet wheel 123 through a first screw 126; a first screw 126 passes through the spring wire 125 and the hole in the lifting sleeve 124 and enters the ratchet wheel 123 to be combined together; the knob 127 is snap-connected to the ratchet wheel 123.
It will be appreciated that the connection of the other side of the thigh support 103 to the push plate assembly 10 can be made with reference to the above arrangement, such as the support seat 115 being replaced by a knob seat B128, the other wire rope 111 being threaded through the upper and lower slots on the other side of the mounting plate 114 and then through the third and fourth through holes in the knob seat B128, respectively, into the first and second through holes in the wire rope wheel 118, the knob seat B128 being secured to the shank support 105 by the screw 120, the wire rope 111 being slidable in the middle slot of the knob seat 128 and shank support 105, the wire rope wheel 118 being sleeved on the cylinder in the center of the knob seat B128, the first screw 126 being threaded through the holes in the spring wire 125 and the lifting sleeve 124 into the ratchet 123 being snapped into engagement with the protrusions on the knob 127 by the grooves on the ratchet 123, and being secured to the wire rope wheel 118 and knob seat B128 by the screw 126.
In one embodiment where the boss 1160 is slidably disposed with the stent holder 115, the stent holder 115 includes interconnecting the wide bore 1151 and the narrow bore 1152, and the boss 1160 is slidably disposed between the wide bore 1151 and the narrow bore 1152. The knob seat a117 and the bottom cover 116 are combined to slide toward the wide hole 1151 of the holder 115 to the end of the wide hole 1151, and can be taken out upward.
To increase comfort, the fixation plate 114 may be attached to the thigh engaging surface with a fixation plate pad 113.
Under normal state, when the Anterior Cruciate Ligament (ACL) patient wears the brace, in order to prevent the translation of patient's femur rear portion, through twisting knob 127 respectively, through the fixed plate 114 of brace and fixed plate liner 113, apply adjustable pressure to patient's thigh rear side, enable fixed plate 114 to promote the femur, can reduce anterior cruciate ligament's pressure when doing rehabilitation training like this, make the patient reduce anterior cruciate ligament's pressure, anterior cruciate ligament rehabilitation training is difficult to cause the complication, reduce the appearance that the problem that influences knee joint normal activity such as the wide adhesion in the appearance joint and muscle, tendon tissue contracture appear promptly, make patient's limb joint obtain effectual fixed and support. After the patient wears, can guarantee that it possess comfortable use and experience.
In a further arrangement, the connection assembly comprises: the fixing member 101, the adjustment washer 102, and the fixing member upper cover 104 are rotated. A rotation fixing member 101 located at one side of the thigh support 103 and the shank support 105; a fixing member upper cover 104 which is positioned at the other side of the thigh support 103 and the shank support 105 and fixedly connected with the rotation fixing member 101; the adjusting gaskets 102 are positioned between the thigh support 103 and the shank support 105 and the rotating fixing piece 101 and the fixing piece upper cover 104; wherein the thigh support 103 and the calf support 105 are rotatably connected between the rotary fixing member 101 and the fixing member upper cover 104 by a rotary support assembly 106. The rotary support assembly 106 consists of a rivet shaft 107 and a screw 108 inserted into the rivet shaft 107, the gasket support 122 is fixed on the back surface of the rotary fixing piece 101 by the screw 108 and the rivet shaft 107, and a shaft sleeve 109 is sleeved on the periphery of the rivet shaft 107; it will be appreciated that adjustment shims 102 are respectively provided between the rotating mount upper cover 104 and the rotating mount 101 and the thigh support 103, and shims 110 are placed between the portion of the rivet shaft 107 exposing the rotating mount upper cover 104 and the rotating mount upper cover 104, and the thigh support 103 and the calf support 105 are in the same plane.
To achieve synchronous rotation of the thigh support 103 and the calf support 105, the thigh support 103 and the calf support 105 comprise gear teeth 1000, the centers of the gear teeth 1000 coincide with the center of rotation of the thigh support 103 or the calf support 105, and the gear teeth 1000 of the thigh support 103 and the calf support 105 are engaged with each other.
In one embodiment where the wearing part 402 is connected to the thigh support 103, the wearing part 402 and the thigh support 103 are connected by a fastening device 300, and the fastening device 300 includes: a buckle seat 301, a buckle box 302, a button 303 and a return spring 304; the fastening seat 301 comprises a return spring 304 and is provided with a fastening through hole 201; the button 303 is movably arranged on the buckling seat 301, the moving position of the button 303 comprises a through position, namely, the button 303 extends out along the end face of the buckling seat 301 and can move left and right relative to the buckling seat 301, and the button 303 is provided with a button through hole 203; the buckle box 302 is connected with the buckle seat 301 and comprises a bump 204, the bump 3021 is movably arranged relative to the buckle through hole 201 and the button through hole 203 and is provided with a notch 205 for locking the buckle seat 301 and the buckle box 302, and the buckle box 302 is also provided with a clamping hole 206 which is in fit and clamping with the return spring 304; the return spring 304 is arranged between the button 303 and the buckling seat 301; wherein, in the through position, the button through hole 203 is communicated with the buckle through hole 201.
It can be understood that in this embodiment, when the locking is needed by the locking device 300, the clamping block 202 of the locking seat 301 is first clamped into the clamping hole 206 of the locking box 302, the button 303 is pressed down, the button 303 overcomes the spring force, at this time, the locking through hole 201 of the locking seat 301 and the button through hole 203 of the button 303 are communicated, then the locking seat 301 can be rotated by a small angle to make it contact with the locking box 302, the protruding block 204 on the locking box 302 passes through the locking seat 301, the protruding block 204 of the locking box 302 can pass through the locking through hole 201 of the locking seat 301 and the button through hole 203 of the button 303, after the button 303 is released, the button 303 moves along the left end face of the locking seat 301 under the action of the restoring spring 304, and when the button 303 enters the notch 205 of the protruding block 204, the locking seat 301 and the locking box 302 are stopped. When the buckle seat 301 and the buckle box 302 need to be unlocked, the button 303 is pressed down, so that the button 303 moves out of the notch 205 of the protruding block 204, and then the buckle seat 301 is pulled out by hand.
In the anterior cruciate ligament fixing support of this embodiment, the fastening seat 301 of the fastening device 300 is fixed on the thigh support 103/calf support 105 by the rivet 112 fixed on the thigh support 103/calf support 105, and the other end of the thigh support 103/calf support 105 is also provided with a bandage rubber ring 120 fixed by a nut 119 and a support screw 120. The upper bracket and the lower bracket are respectively provided with a thigh bracket pad 403 and a shank bracket pad 404, the upper bracket and the lower bracket are respectively provided with a joint pad 401 at the joint position, the upper bracket and the lower bracket are respectively provided with a bandage 402, the bandages 402 are used for being matched with the brackets, the joint correction device is fixed at the joint position of a human body, one end of each bandage 402 is directly arranged at the left side of the bracket, a detachable mounting mode is preferentially adopted, and the other end of each bandage 402 is fixed at the right side of the bracket through a clamping device. Wherein, the buckle box 302 is fixed on the bandage 402, and the buckle seat 301 is fixed on the bracket. The buckle box 302 is mounted on a bandage 402, one end of the bandage ring 121 is rotatably connected with the buckle seat 301, and the other end is provided with a perforation 207 for passing the bandage. Two bandages 402 are arranged on the upper side and the lower side of the support, three bandages 402 are arranged on the upper side and the lower side of the lower support, wherein the bandages 402 are respectively arranged on the upper side and the lower side of the support, and can be more firmly fixed on joints of a human body.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. An anterior cruciate ligament fixation stent, comprising:
the support comprises a thigh support, a shank support and a connecting assembly, wherein the thigh support is rotationally connected with the shank support through the connecting assembly;
a wearing piece connected with the bracket and used for wearing the lower leg bracket on the lower leg and/or wearing the thigh bracket on the thigh;
and the push plate assembly is connected with the thigh support and comprises a fixing plate which is used for supporting the rear side of the thigh.
2. The anterior cruciate ligament fixation bracket of claim 1, wherein the fixation plate is provided with upper and lower wire slots, the push plate assembly further comprising a pressure adjustment device comprising:
the bracket seat is fixedly connected with the thigh bracket, and a pin shaft and a return spring are arranged in the bracket seat;
the knob seat is provided with a first through hole and a second through hole;
the steel wire rope wheel is rotationally connected to the knob seat and is provided with a third through hole and a fourth through hole;
the bottom cover is fixed with the knob seat through a screw and comprises a boss which is arranged on the bracket seat in a sliding manner;
the steel wire rope penetrates through the upper wire groove and the lower wire groove of the fixed plate, the two ends of the steel wire rope are respectively fixed with the third through hole and the fourth through hole of the steel wire rope reel through the first through hole and the second through hole of the torsion selecting seat, and the steel wire rope is arranged between the bottom cover and the knob seat in a sliding manner;
the ratchet wheel is fixed with the steel wire rope wheel and the knob seat into a whole;
the spring wire is clamped in the ratchet wheel;
the lifting sleeve is connected with the ratchet wheel through a screw;
the knob is connected with the ratchet wheel through a buckle.
3. An anterior cruciate ligament fixation stent according to claim 2, wherein the stent mount includes an interconnecting wide aperture and a narrow aperture, the boss being slidably disposed between the wide aperture and the narrow aperture.
4. The anterior cruciate ligament fixation stent of claim 1, wherein the connection assembly comprises:
the rotary fixing piece is positioned at one side of the thigh bracket and the shank bracket;
the upper cover of the fixing piece is positioned on the other sides of the thigh bracket and the shank bracket and is fixedly connected with the rotating fixing piece;
the adjusting gaskets are positioned between the two sides of the thigh support and the shank support and between the rotating fixing piece and the upper cover of the fixing piece;
the thigh support and the shank support are rotatably connected between the rotary fixing piece and the fixing piece upper cover through the rotary supporting component.
5. The anterior cruciate ligament fixation stent of claim 1, wherein the thigh stent and the calf stent include gear teeth, a center of the gear teeth coincides with a center of rotation of the thigh stent or the calf stent, and the gear teeth of the thigh stent and the calf stent are intermeshed.
6. The anterior cruciate ligament fixation stent of claim 1, wherein the wear is a bandage.
7. The anterior cruciate ligament fixation stent of claim 1, wherein the attachment between the dressing and the bandage is via a snap-fit device comprising:
the clamping seat comprises a clamping block and is provided with a clamping through hole;
the button is movably arranged on the buckle seat, the movable position of the button comprises a through position, and a button through hole is formed;
the buckle box is connected with the buckle seat and comprises a convex block, the convex block is movably arranged relative to the buckle through hole and the button through hole, a locking buckle seat and a notch of the buckle box are formed, and the buckle box is also provided with a clamping hole which is matched and clamped with the clamping block;
the return spring is arranged between the button and the buckle seat;
wherein, in the through position, the button through hole is communicated with the buckle through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320181087.1U CN218943624U (en) | 2023-02-01 | 2023-02-01 | Anterior cruciate ligament fixed bolster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320181087.1U CN218943624U (en) | 2023-02-01 | 2023-02-01 | Anterior cruciate ligament fixed bolster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218943624U true CN218943624U (en) | 2023-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320181087.1U Active CN218943624U (en) | 2023-02-01 | 2023-02-01 | Anterior cruciate ligament fixed bolster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218943624U (en) |
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2023
- 2023-02-01 CN CN202320181087.1U patent/CN218943624U/en active Active
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