CN219847697U - Simple breathing machine - Google Patents
Simple breathing machine Download PDFInfo
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- CN219847697U CN219847697U CN202221995887.9U CN202221995887U CN219847697U CN 219847697 U CN219847697 U CN 219847697U CN 202221995887 U CN202221995887 U CN 202221995887U CN 219847697 U CN219847697 U CN 219847697U
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- fixedly connected
- adjusting
- block
- support
- ventilator
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- 230000029058 respiratory gaseous exchange Effects 0.000 title description 13
- 238000003825 pressing Methods 0.000 claims abstract description 33
- 239000007789 gas Substances 0.000 claims abstract description 24
- 230000005484 gravity Effects 0.000 claims abstract description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 3
- 235000000396 iron Nutrition 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000002640 oxygen therapy Methods 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 206010002091 Anaesthesia Diseases 0.000 description 2
- 208000004756 Respiratory Insufficiency Diseases 0.000 description 2
- 230000037005 anaesthesia Effects 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 201000004193 respiratory failure Diseases 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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- External Artificial Organs (AREA)
Abstract
The utility model relates to the technical field of respirators, and provides a simple respirator, which comprises: the support is in an L-shaped support, an I-shaped base is fixedly arranged at the lower end of the support, and a support arm is fixedly connected to the upper end of the I-shaped base. And the adjusting device is fixedly connected with one side of the supporting arm, mixes a plurality of gases and adjusts the pressure and the speed of extruding the mixed gases. And the pressing device is rotationally connected with the tail end of the supporting arm and presses the adjusting device through gravity. And the driving device is fixedly connected with one side of the adjusting device and is used for lifting the pressing device and adjusting the pressing degree and speed. The adjusting device is provided with an air bag, one end of the air bag is fixedly connected with a stop mechanism, the other end of the air bag is fixedly connected with an air suction adjusting mechanism, the air suction adjusting mechanism is fixedly provided with a plurality of suction inlets, a quick connector is fixedly arranged above the stop mechanism, a discharge outlet is fixedly arranged below the stop mechanism, and one side of the quick connector is provided with a locking knob.
Description
Technical Field
The utility model relates to the technical field of respirators, in particular to a simple respirator.
Background
The customized design model of the breathing machine system is a device which can replace, control or change normal physiological breathing of people, increase the ventilation quantity of lungs, improve the breathing function, lighten the breathing power consumption and save the heart reserve capacity. As an effective means for artificially replacing the spontaneous ventilation function, a ventilator has been widely used in respiratory failure due to various reasons, anesthesia respiratory management during major surgery, respiratory support treatment and emergency resuscitation, and has taken a very important place in the field of modern medicine. The breathing machine is a vital medical device which can prevent and treat respiratory failure, reduce complications, save and prolong the life of patients. The height of the pressing device cannot be adjusted by the existing breathing support, so that gravitational potential energy cannot be changed, different gases cannot be adjusted in proportion, the breathing support is inconvenient to use, and the existing breathing support is complex in structure and high in manufacturing, using and maintaining costs.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides a simple breathing machine.
The technical scheme of the utility model is as follows:
a simple ventilator, comprising:
the support is in an L-shaped support, an I-shaped base is fixedly arranged at the lower end of the support, and a support arm is fixedly connected to the upper end of the I-shaped base;
the adjusting device is fixedly connected with one side of the supporting arm, mixes a plurality of gases and adjusts the pressure and the speed of extruding the mixed gases;
the pressing device is rotationally connected with the tail end of the supporting arm and presses the adjusting device through gravity;
the driving device is fixedly connected with one side of the adjusting device and is used for lifting the pressing device and adjusting the pressing degree and speed;
the adjusting device is provided with an air bag, one end of the air bag is fixedly connected with a stop mechanism, the other end of the air bag is fixedly connected with an air suction adjusting mechanism, the air suction adjusting mechanism is fixedly provided with a plurality of suction inlets, a quick connector is fixedly arranged above the stop mechanism, a discharge outlet is fixedly arranged below the stop mechanism, and one side of the quick connector is provided with a locking knob; the air suction adjusting mechanism is used for adjusting and closing the size of the suction inlet, the cut-off mechanism is used for adjusting and closing the gas size of the quick connector, and the air bag is used for providing power for oxygen therapy.
Further, the bracket further comprises:
the rotating seat is fixedly connected with the tail end of the supporting arm and is rotationally connected with the pressing device;
and one end of the reinforcing rod is fixedly connected with the supporting arm, and the other end of the reinforcing rod is fixedly connected with the I-shaped base.
Further, the pressing device includes:
one end of the first swing arm is fixedly connected with a mounting seat, and the other end of the first swing arm is fixedly connected with a fixed frame;
the extrusion block is fixedly connected with the middle of the first swing arm and used for pressing the adjusting device;
and the bearing bottle is clamped between the two fixing frames, and the pressing force is improved by filling liquids with different densities.
Further, the driving device includes:
the motor is fixedly connected with a worm gear reduction box at an output shaft, the worm gear reduction box is fixedly connected with a mounting frame, and a second swing arm is fixedly connected with the output shaft;
the rotating wheel is rotationally connected with one end of the second swing arm and is in rolling connection with the first swing arm;
the mounting column is fixedly connected with the mounting frame, and the other side of the mounting column is fixedly connected with a connecting clamping piece;
two elastic washers are clamped between the connecting clamping piece and the mounting column, and a plurality of elastic adhesives are fixedly arranged on the connecting clamping piece.
Further, the adjusting device further includes:
the lower part of the support section bar is fixedly connected with a triangular support section bar, and the other side of the triangular support section bar is fixedly connected with the support arm;
the support plane is fixedly connected with the upper surface of the support section bar and is abutted against the air bag;
and the two-head fixing frame is fixedly connected with the lower part of the supporting section bar and is clamped with the two sides of the air bag.
Further, the suction adjusting mechanism includes:
the fixed base is in a regular polygon shape, the center of the fixed base is provided with a plurality of suction inlets, the circumferences of the periphery of the suction inlets are respectively provided with a plurality of sliding grooves, and one side of the fixed base is provided with a notch;
the driving rotating block is arranged at the notch position, a sliding block is fixedly arranged below the driving rotating block, the sliding block is connected with the sliding groove in a sliding manner, and one end of the outer side of the driving rotating block is fixedly connected with a knob;
and the passive adjusting block is connected with the active rotating block in a sliding way, a sliding block is fixedly arranged below the passive adjusting block, and the sliding block is connected with the sliding groove in a sliding way.
Further, the shut-off mechanism includes:
the gear is fixedly connected with one end of the locking knob, and the locking knob is rotationally connected with the stop mechanism;
and the rack is meshed with the gear, and the tail end of the rack is fixedly connected with a closing valve.
Further, a gap is formed between the knob and the fixed base, the knob is abutted to the driving rotating block and the driven adjusting block, and two sides of the driving rotating block are both in sliding connection with the driven adjusting block.
Further, the fixed frame is two right angle irons which are oppositely arranged.
The beneficial effects of the utility model are as follows:
(1) The motor of the driving device is used for adjusting the degree and the force of pressing the liquid in the bearing bottle of the pressing device, the motor of the driving device is used for lifting the pressing device to different heights so as to provide different gravitational potential energy, and the mounting column of the driving device is used for finely adjusting the lifting height.
(2) And the air inflow of the sizes of the suction inlet and the quick connector is controlled through the air suction adjusting mechanism and the cut-off mechanism of the adjusting device, so that gases with different proportions are adjusted to be mixed.
Description of the drawings:
FIG. 1 is a perspective view of a simple ventilator according to the present utility model;
FIG. 2 is a perspective view of a drive mechanism of the simple ventilator of the present utility model;
FIG. 3 is a front view of a drive device of a simple ventilator according to the present utility model;
FIG. 4 is a perspective view of an adjustment device of a simple ventilator according to the present utility model;
FIG. 5 is a perspective view of an inhalation adjustment mechanism of the adjustment device of the simple ventilator of the present utility model;
FIG. 6 is a schematic diagram of the structure of the inhalation adjustment mechanism of the adjustment device of the simple ventilator according to the present utility model;
FIG. 7 is a plan view of the shut-off mechanism of the adjustment device of the simple ventilator of the present utility model;
FIG. 8 is an open schematic view of an inhalation adjustment mechanism of an adjustment device of a simple ventilator according to the present utility model;
fig. 9 is a schematic closing view of an inhalation adjustment mechanism of an adjustment device of a simple ventilator according to the present utility model.
Reference numerals
A bracket 100, an I-shaped base 101, a supporting arm 102, a rotating seat 103 and a reinforcing rod 104;
the pressing device 200, a first swing arm 201, a mounting seat 202, a fixed frame 203, an extrusion block 204 and a bearing bottle 205;
the device comprises a driving device 300, a motor 301, a worm gear reduction box 302, a rotating wheel 303, a mounting frame 304, a second swing arm 305, a mounting column 306, a connecting clamping piece 307, elastic glue 308 and an elastic gasket 309;
the device comprises an adjusting device 400, an air bag 401, a suction inlet 402, a discharge outlet 403, a quick connector 404, a two-head fixing frame 405, a supporting plane 406, a supporting section 407, a triangular supporting section 408 and a locking knob 409;
the air suction adjusting mechanism 410, the fixed base 411, the driving rotating block 412, the driven adjusting block 413, the sliding block 414, the sliding chute 415, the knob 416 and the notch 417;
shut-off mechanism 420, gear 421, rack 422, shut-off valve 423.
Detailed Description
In order to make the technical scheme and technical effects of the utility model more clear, the utility model is further described below with reference to specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, a simple breathing machine includes a support 100, a pressing device 200, a driving device 300 and an adjusting device 400, the support 100 is an L-shaped support, an i-shaped base 101 is fixedly arranged at the lower end of the support 100, a support arm 102 is fixedly connected to the upper end of the i-shaped base 101, a rotating seat 103 is fixedly connected to the tail end of the support arm 102, one side of the support arm 102 is fixedly connected to the adjusting device 400, one side of the adjusting device 400 is fixedly connected to the driving device 300, and the rotating seat 103 is rotatably connected to the pressing device 200.
One side of the supporting arm 102 is provided with a reinforcing rod 104, the other end of the reinforcing rod 104 is fixedly connected with the I-shaped base 101, and the reinforcing rod 104, the supporting arm 102 and the I-shaped base 101 are in a triangle structure.
The pressing device 200 comprises a first swing arm 201, a mounting seat 202, a fixed frame 203, a pressing block 204 and a bearing bottle 205. One end of the first swing arm 201 is fixedly connected with the mounting seat 202, the other end of the first swing arm is fixedly connected with the fixing frame 203, the fixing frame 203 is two right angle irons which are oppositely arranged, and the fixing frame 203 is clamped with the bearing bottle 205. The bearing bottle 205 increases its own weight and increases the descending acceleration by containing liquids of different densities, thereby controlling the speed of its breathing machine. The pressing block 204 is fixedly connected to the middle lower part of the first swing arm 201, and the pressing block 204 is used for pressing the adjusting device 400.
Referring to fig. 2 and 3, the driving device 300 includes a motor 301, a worm gear reduction box 302, a rotating wheel 303, a mounting frame 304, a second swing arm 305, a mounting post 306, a connection clamping member 307, an elastic rubber 308, and an elastic washer 309. The output shaft of the motor 301 is fixedly connected with the worm gear reduction box 302, the worm gear reduction box 302 is fixedly connected with the mounting frame 304, the output shaft of the worm gear reduction box 302 penetrates through the mounting frame 304 and is fixedly connected with one end of the second swing arm 305, the other end of the second swing arm 305 is rotationally connected with the rotating wheel 303, the mounting frame 304 is fixedly connected with the mounting column 306, the other side of the mounting column 306 is fixedly connected with the connecting clamping piece 307, two elastic gaskets 309 are clamped between the connecting clamping piece 307 and the mounting column 306, three elastic adhesives 308 are fixedly arranged on the connecting clamping piece 307, the elastic adhesives 308 are in a convex shape and are matched with the concave of an aluminum profile, and the rotating wheel 303 of the driving device 300 is in rolling connection with the pressing device 200.
Referring to fig. 4, the adjusting device 400 includes an airbag 401, a suction inlet 402, a discharge outlet 403, a quick connector 404, a two-head fixing frame 405, a support plane 406, a support profile 407, a triangular support profile 408, a locking knob 409, a suction adjusting mechanism 410, and a shut-off mechanism 420. The upper surface of the supporting section bar 407 is fixedly connected with the supporting plane 406, the lower surface of the supporting section bar is fixedly connected with the two fixing frames 405, one side of the two fixing frames 405 is provided with the triangular supporting section bar 408, one side of the triangular supporting section bar 408 is fixedly connected with the supporting section bar 407, and the other side of the triangular supporting section bar 408 is fixedly connected with the supporting arm 102. The two-head fixing frame 405 is clamped with the air bag 401, the air bag 401 is abutted against the supporting plane 406, one end of the air bag 401 is fixedly connected with the air suction adjusting mechanism 410, the other end of the air bag 401 is fixedly connected with the stopping mechanism 420, the air suction adjusting mechanism 410 is fixedly provided with four air suction inlets 402, the upper part of the stopping mechanism 420 is fixedly provided with the quick connector 404, the lower part of the stopping mechanism 420 is fixedly provided with the exhaust outlet 403, one side of the quick connector 404 is provided with the locking knob 409, and the locking knob 409 is rotationally connected with the stopping mechanism 420.
Referring to fig. 5, 6, 8 and 9, the suction adjusting mechanism 410 includes a fixed base 411, an active rotating block 412, a passive adjusting block 413, a sliding block 414, a sliding slot 415, a knob 416 and a notch 417. The fixed base 411 is in the shape of a regular octagon, and one side thereof is provided with a notch 417. Four suction inlets 402 are fixedly arranged in the center of the fixed base 411, and eight sliding grooves 415 are circumferentially distributed on the periphery of the suction inlets 402. The sliding groove 415 is slidably connected with the sliding block 414, the sliding block 414 is fixedly connected with the lower portion of the driving rotating block 412, the driving rotating block 412 is slidably connected with the driven adjusting block 413, and the driven adjusting block 413 is also fixedly provided with the sliding block 414. The one end of the active rotation block 412 is fixedly connected with the knob 416, the knob 416 abuts against the active rotation block 412 and the passive adjustment block 413, and a gap is provided between the knob 416 and the fixed base 411.
Referring to fig. 7, the shut-off mechanism 420 includes a gear 421, a rack 422, and a shut-off valve 423. The other end of the locking knob 409 is fixedly connected with the gear 421, the gear 421 is meshed with the rack 422, the tail end of the rack 422 is fixedly connected with the closing valve 423, and when the closing valve 423 is locked, gas of the quick connector 404 is blocked.
The suction port 402 may be used for mixing a plurality of pure gases, the driving device 300 may be used for adjusting the pressing degree of the pressing device 200, the suction adjusting mechanism 410 may be used for adjusting the size of the suction port 402, the stop mechanism 420 may be used for adjusting the gas size of the quick connector 404, so that the gas mixing according to different proportions meets the condition of a patient, some of the gases need to have high oxygen content, some of the gases need to have usual gas components, some of the gases can be used for anesthesia, and all of the gases can be adjusted by the simple equipment.
When the knob 416 is turned, the active rotating block 412 is limited by the sliding groove 415 to provide power inwards in an inclined manner, the active rotating block 412 pushes the passive adjusting block 413, the passive adjusting block 413 is also limited by the sliding groove 415, and the front side and the rear side of the active rotating block 412 are both in sliding connection with the passive adjusting block 413, so that the active rotating block 412 and the passive adjusting block 413 synchronously move.
The suction port 402 is connected to various pure gas tanks through a pipeline, and the driving device 300 lifts the pressing device 200, and if the lowering distance is to be adjusted, the rotation angle of the motor 301 can be adjusted, and the position of the driving device 300 can be moved to perform fine adjustment. The descending speed of the pressing device 200 is controlled by the rotation speeds of the bearing bottle 205 and the motor 301. The suction inlet 402 may be controlled by knotted pipes to mix several gases, and a doctor may adjust the position of the driving device 300 and the rotation speed and angle of the motor 301, and the gas tank connecting the suction inlet 402 and the quick connector 404 may check whether the mixed gases meet the rules by an instrument, and may be used by a patient after the mixed gases meet the rules.
The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. For those skilled in the art, the architecture of the utility model can be flexible and changeable without departing from the concept of the utility model, and serial products can be derived. But a few simple derivatives or substitutions should be construed as falling within the scope of the utility model as defined by the appended claims.
Claims (9)
1. A simple ventilator, comprising:
the support is in an L-shaped support, an I-shaped base is fixedly arranged at the lower end of the support, and a support arm is fixedly connected to the upper end of the I-shaped base;
the adjusting device is fixedly connected with one side of the supporting arm, mixes a plurality of gases and adjusts the pressure and the speed of extruding the mixed gases;
the pressing device is rotationally connected with the tail end of the supporting arm and presses the adjusting device through gravity;
the driving device is fixedly connected with one side of the adjusting device and is used for lifting the pressing device and adjusting the pressing degree and speed;
the device is characterized in that the adjusting device is provided with an air bag, one end of the air bag is fixedly connected with a stop mechanism, the other end of the air bag is fixedly connected with an air suction adjusting mechanism, the air suction adjusting mechanism is fixedly provided with a plurality of suction inlets, a quick connector is fixedly arranged above the stop mechanism, a discharge outlet is fixedly arranged below the stop mechanism, and one side of the quick connector is provided with a locking knob; the air suction adjusting mechanism is used for adjusting and closing the size of the suction inlet, the cut-off mechanism is used for adjusting and closing the gas size of the quick connector, and the air bag is used for providing power for oxygen therapy.
2. The easy ventilator of claim 1, wherein the stand further comprises:
the rotating seat is fixedly connected with the tail end of the supporting arm and is rotationally connected with the pressing device;
and one end of the reinforcing rod is fixedly connected with the supporting arm, and the other end of the reinforcing rod is fixedly connected with the I-shaped base.
3. The easy ventilator of claim 1 wherein the compression device comprises:
one end of the first swing arm is fixedly connected with a mounting seat, and the other end of the first swing arm is fixedly connected with a fixed frame;
the extrusion block is fixedly connected with the middle of the first swing arm and used for pressing the adjusting device;
and the bearing bottle is clamped between the two fixing frames, and the pressing force is improved by filling liquids with different densities.
4. A simple ventilator as in claim 3, wherein the drive means comprises:
the motor is fixedly connected with a worm gear reduction box at an output shaft, the worm gear reduction box is fixedly connected with a mounting frame, and a second swing arm is fixedly connected with the output shaft;
the rotating wheel is rotationally connected with one end of the second swing arm and is in rolling connection with the first swing arm;
the mounting column is fixedly connected with the mounting frame, and the other side of the mounting column is fixedly connected with a connecting clamping piece;
two elastic washers are clamped between the connecting clamping piece and the mounting column, and a plurality of elastic adhesives are fixedly arranged on the connecting clamping piece.
5. The easy ventilator of claim 1, wherein the adjustment device further comprises:
the lower part of the support section bar is fixedly connected with a triangular support section bar, and the other side of the triangular support section bar is fixedly connected with the support arm;
the support plane is fixedly connected with the upper surface of the support section bar and is abutted against the air bag;
and the two-head fixing frame is fixedly connected with the lower part of the supporting section bar and is clamped with the two sides of the air bag.
6. The easy ventilator of claim 1, wherein the inhalation adjustment mechanism comprises:
the fixed base is in a regular polygon shape, the center of the fixed base is provided with a plurality of suction inlets, the circumferences of the periphery of the suction inlets are respectively provided with a plurality of sliding grooves, and one side of the fixed base is provided with a notch;
the driving rotating block is arranged at the notch position, a sliding block is fixedly arranged below the driving rotating block, the sliding block is connected with the sliding groove in a sliding manner, and one end of the outer side of the driving rotating block is fixedly connected with a knob;
and the passive adjusting block is connected with the active rotating block in a sliding way, a sliding block is fixedly arranged below the passive adjusting block, and the sliding block is connected with the sliding groove in a sliding way.
7. The easy ventilator of claim 1, wherein the shut-off mechanism comprises:
the gear is fixedly connected with one end of the locking knob, and the locking knob is rotationally connected with the stop mechanism;
and the rack is meshed with the gear, and the tail end of the rack is fixedly connected with a closing valve.
8. The simple ventilator of claim 6, wherein a gap is provided between the knob and the fixed base, the knob abuts the active rotating block and the passive adjusting block, and both sides of the active rotating block are slidably connected to the passive adjusting block.
9. The simple ventilator of claim 3, wherein the fixed frame is two oppositely disposed right angle irons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221995887.9U CN219847697U (en) | 2022-07-27 | 2022-07-27 | Simple breathing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221995887.9U CN219847697U (en) | 2022-07-27 | 2022-07-27 | Simple breathing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219847697U true CN219847697U (en) | 2023-10-20 |
Family
ID=88324289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221995887.9U Active CN219847697U (en) | 2022-07-27 | 2022-07-27 | Simple breathing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219847697U (en) |
-
2022
- 2022-07-27 CN CN202221995887.9U patent/CN219847697U/en active Active
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