CN114259710A - Breathe dedicated portable breathing training ware of internal medicine - Google Patents
Breathe dedicated portable breathing training ware of internal medicine Download PDFInfo
- Publication number
- CN114259710A CN114259710A CN202210030272.0A CN202210030272A CN114259710A CN 114259710 A CN114259710 A CN 114259710A CN 202210030272 A CN202210030272 A CN 202210030272A CN 114259710 A CN114259710 A CN 114259710A
- Authority
- CN
- China
- Prior art keywords
- training
- fixedly connected
- connecting plate
- rotating shaft
- training device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000029058 respiratory gaseous exchange Effects 0.000 title claims abstract description 44
- 239000003814 drug Substances 0.000 title claims abstract description 23
- 230000000241 respiratory effect Effects 0.000 claims abstract description 24
- 230000001681 protective effect Effects 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 13
- 210000003437 trachea Anatomy 0.000 description 6
- 210000003205 muscle Anatomy 0.000 description 4
- 238000001356 surgical procedure Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 238000013130 cardiovascular surgery Methods 0.000 description 2
- 210000000038 chest Anatomy 0.000 description 2
- 210000004072 lung Anatomy 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 210000003781 tooth socket Anatomy 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 206010006458 Bronchitis chronic Diseases 0.000 description 1
- 208000035473 Communicable disease Diseases 0.000 description 1
- 201000006306 Cor pulmonale Diseases 0.000 description 1
- 206010014561 Emphysema Diseases 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 208000029523 Interstitial Lung disease Diseases 0.000 description 1
- 206010058467 Lung neoplasm malignant Diseases 0.000 description 1
- 208000002151 Pleural effusion Diseases 0.000 description 1
- 206010035664 Pneumonia Diseases 0.000 description 1
- 208000007123 Pulmonary Atelectasis Diseases 0.000 description 1
- 208000004186 Pulmonary Heart Disease Diseases 0.000 description 1
- 208000004756 Respiratory Insufficiency Diseases 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 208000006673 asthma Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 201000009267 bronchiectasis Diseases 0.000 description 1
- 206010006451 bronchitis Diseases 0.000 description 1
- 208000007451 chronic bronchitis Diseases 0.000 description 1
- 230000001079 digestive effect Effects 0.000 description 1
- 235000006694 eating habits Nutrition 0.000 description 1
- 230000002526 effect on cardiovascular system Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 210000000876 intercostal muscle Anatomy 0.000 description 1
- 201000003453 lung abscess Diseases 0.000 description 1
- 201000005202 lung cancer Diseases 0.000 description 1
- 230000004199 lung function Effects 0.000 description 1
- 208000020816 lung neoplasm Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004118 muscle contraction Effects 0.000 description 1
- 201000009240 nasopharyngitis Diseases 0.000 description 1
- 201000003144 pneumothorax Diseases 0.000 description 1
- 230000002685 pulmonary effect Effects 0.000 description 1
- 208000008128 pulmonary tuberculosis Diseases 0.000 description 1
- 201000004193 respiratory failure Diseases 0.000 description 1
- 210000003019 respiratory muscle Anatomy 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
Images
Landscapes
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention relates to the technical field of breathing training equipment, in particular to a portable breathing training device special for respiratory medicine. The technical scheme comprises the following steps: the training device comprises a training device body, a breathing tube, an air inlet valve, an air outlet valve and a sucker, wherein an air collecting cover is arranged inside the training device body and is rotationally connected with a first rotating shaft, an impeller and a circular rotating disc are fixedly connected with the first rotating shaft, and one end of the first rotating shaft penetrates through one side of the training device body; the protection casing is installed to one side of training ware main part, the scale is installed to one side of protection casing, circular turntable is located the inside of protection casing, and one side of circular turntable is provided with the removal connecting plate, one side and the training ware main part sliding connection of removal connecting plate, the opposite side passes through carriage release lever fixedly connected with pointer, the pointer is located one side of scale. The invention can mark the training times for the trainer and simultaneously conveniently clear the training times, so that the trainer is convenient to carry out the next respiratory training.
Description
Technical Field
The invention relates to the technical field of breathing training equipment, in particular to a portable breathing training device special for respiratory medicine.
Background
The internal medicine includes respiratory medicine, digestive internal medicine, cardiovascular medicine, neurology, oncology, endocrinology, hematology, infectious disease department, pediatric medicine, etc. Respiratory medicine: including common cold, pneumonia, emphysema, pulmonary tuberculosis, bronchiectasis, asthma, lung cancer, cor pulmonale, respiratory failure, chronic bronchitis, pneumothorax, lung abscess, pleural effusion, and interstitial lung disease.
With the change of dietary habits and the pollution of the environment, the ratio of the respiratory surgery, the cardiovascular surgery and other surgical operations of Chinese people tends to increase year by year, when patients are subjected to the respiratory surgery or the cardiovascular surgery, the patients can be anesthetized, wherein after the anesthesia, the lung function is affected, and then the lung collapse condition occurs after the surgery, therefore, the patients need to perform deep breathing after the surgery to strengthen the strength of the respiratory muscle, and the lung volume of the patients is led to recover or approach to normal by the way of increasing the inspiration volume and the expiration volume each time.
Respiration refers to the process of gas exchange between the body and the external environment. The human respiratory process includes three interrelated links: external breathing, including lung ventilation and pulmonary ventilation; transport of gas in blood; internal respiration refers to the exchange of gas between the tissue cells and the blood. A normal adult breathes optimally for 6.4 seconds at rest, and the volume of gas inhaled and exhaled each time is approximately 500 ml, called the tidal volume. When people inhale by force until the people can not inhale any more; then exhale with strength again, exhale until can't exhale again soon, the amount of gas that this moment exhales is called vital capacity, and the people is when normally breathing in, and the diaphragm contracts and the intercostal muscle contracts, and when breathing in with strength, still need the assistance of inhaling auxiliary muscle, such as the muscle of trapezius, the oblique angle muscle, the result of these muscle contractions makes the chest rise widely, and the thorax space enlarges to the limit, therefore needs to take exercise to inhaling the muscle.
In the respiratory training process of breathing internal medicine, required portable respiratory training ware, but traditional portable respiratory training ware, people can produce the oxygen deficiency when breathing deeply to probably can make the training person forget how many times of oneself training when breathing the training, thereby can cause the not enough or too much condition of training, be unfavorable for the training person and use.
Disclosure of Invention
The invention aims to provide a portable respiration training device special for respiratory medicine, which is convenient for assisting a trainer to mark training times aiming at the problems in the background technology.
The technical scheme of the invention is as follows: a portable respiration trainer special for respiration medicine comprises a trainer body, a respiration tube, an air inlet valve, an air outlet valve and a sucker, wherein an air collecting cover is arranged inside the trainer body, the air collecting cover is rotatably connected with a first rotating shaft, the first rotating shaft is fixedly connected with an impeller and a circular turntable, and one end of the first rotating shaft penetrates through one side of the trainer body;
the protection casing is installed to one side of training ware main part, the scale is installed to one side of protection casing, circular turntable is located the inside of protection casing, and one side of circular turntable is provided with the removal connecting plate, one side and the training ware main part sliding connection of removal connecting plate, the opposite side passes through carriage release lever fixedly connected with pointer, the pointer is located one side of scale.
Preferably, respiratory tube admission valve, discharge valve and sucking disc are installed respectively in one side of training ware main part, and the one end fixedly connected with rubber sleeve and the mouthpiece of respiratory tube.
Preferably, a conical cover is installed on one side of the air collecting cover and is located below the breathing tube.
Preferably, one side of the protective cover is provided with a sliding opening, and the moving rod is connected with the sliding opening in a sliding manner.
Preferably, tooth sockets are formed in one side of the circular turntable and one side of the movable connecting plate, ratchets are installed on the other side of the movable connecting plate, and the circular turntable is in meshing transmission with the movable connecting plate.
Preferably, the inside fixedly connected with fixed block of protection casing, one side of fixed block is rotated and is connected with pivot two, two fixedly connected with spacing teeth of pivot, and one end of pivot two runs through one side of protection casing, spacing tooth and ratchet meshing.
Preferably, one side fixedly connected with extension spring of spacing tooth, the one end and the protection casing fixed connection of extension spring.
Preferably, one side fixedly connected with baffle of removal connecting plate, one side fixedly connected with reset spring of baffle, reset spring's one end and protection casing fixed connection.
Compared with the prior art, the invention has the following beneficial technical effects:
1: the produced gas flow of training of breathing of training person can drive pivot one, impeller and circular carousel rotate simultaneously, the rotation of circular carousel can drive the synchronous intermittent type of pointer that removes the connecting plate and be connected with it through the carriage release lever through the tooth's socket and remove, can mark the training number of times for the training person through pointer and scale, when needs are clear away the training number of times, rotate two drive spacing teeth of pivot and keep away from the ratchet on removing the connecting plate, at this moment remove the connecting plate and will drive the removal connecting plate through reset spring's effort, carriage release lever and pointer return the normal position, thereby accomplish the purpose of clearing the training number of times, make things convenient for the training person to carry out the next breathing training.
Drawings
FIG. 1 is a perspective view of a portable breathing trainer dedicated to respiratory medicine;
FIG. 2 is a cross-sectional view of the exerciser body of FIG. 1;
fig. 3 is a cross-sectional view of the shield shown in fig. 1.
Reference numerals: 1. a trainer body; 2. a breathing tube; 3. a rubber sleeve; 4. biting mouth; 5. a wind collecting cover; 6. a first rotating shaft; 7. an impeller; 8. a protective cover; 9. a graduated scale; 10. a circular turntable; 11. moving the connecting plate; 12. a ratchet; 13. a tooth socket; 14. a baffle plate; 15. a return spring; 16. a travel bar; 17. a pointer; 18. a fixed block; 19. a second rotating shaft; 20. limiting teeth; 21. a tension spring; 22. an intake valve; 23. an exhaust valve; 24. and (4) sucking discs.
Detailed Description
The technical solution of the present invention is further explained with reference to the accompanying drawings and specific embodiments.
Example one
As shown in fig. 1-3, the portable respiration training device special for department of respiratory medicine provided by the invention comprises a training device main body 1, a respiration tube 2, an air inlet valve 22, an air outlet valve 23 and a suction cup 24, wherein an air collecting cover 5 is installed inside the training device main body 1, the air collecting cover 5 is rotatably connected with a first rotating shaft 6, the first rotating shaft 6 is fixedly connected with an impeller 7 and a circular turntable 10, the first rotating shaft 6 is driven by gas generated by respiration of a trainer through the impeller 7 to rotate together, and one end of the first rotating shaft 6 penetrates through one side of the training device main body 1; the protection casing 8 is installed to one side of training ware main part 1, scale 9 is installed to one side of protection casing 8, circular carousel 10 is located the inside of protection casing 8, and one side of circular carousel 10 is provided with and removes connecting plate 11, one side and the training ware main part 1 sliding connection of removing connecting plate 11, the opposite side passes through carriage release lever 16 fixedly connected with pointer 17, pointer 17 is located one side of scale 9, trachea 2 admission valve 22, discharge valve 23 and sucking disc 24 are installed respectively in one side of training ware main part 1, and the one end fixedly connected with rubber sleeve 3 and the mouthpiece 4 of trachea 2, and rubber sleeve 3 is used for preventing the gas of training person's exhalation and spills, the cone cover is installed to one side of wind-collecting cover 5, the cone cover is located the below of trachea 2, and the cone cover is used for collecting the gas of training person's exhalation, makes it can advance from impeller 7, a sliding opening is formed in one side of the protective cover 8, the moving rod 16 is connected with the sliding opening in a sliding manner, tooth grooves 13 are formed in the circular rotary table 10 and one side of the moving connecting plate 11, ratchets 12 are installed on the other side of the moving connecting plate 11, the circular rotary table 10 is in meshing transmission with the moving connecting plate 11, the number of the tooth grooves 13 formed in the circular rotary table 10 can be determined according to the moving distance of the moving connecting plate 11, a fixed block 18 is fixedly connected to the inside of the protective cover 8, a second rotating shaft 19 is rotatably connected to one side of the fixed block 18, limiting teeth 20 are fixedly connected to the second rotating shaft 19, one end of the second rotating shaft 19 penetrates through one side of the protective cover 8, the limiting teeth 20 are meshed with the ratchets 12, a tension spring 21 is fixedly connected to one side of the limiting teeth 20, one end of the tension spring 21 is fixedly connected with the protective cover 8, and a baffle 14 is fixedly connected to one side of the moving connecting plate 11, one side of baffle 14 fixedly connected with reset spring 15, reset spring 15's one end and protection casing 8 fixed connection.
In this embodiment, the produced gas flow of training person's breathing can drive pivot 6, impeller 7 and circular carousel 10 and rotate simultaneously, and the rotation of circular carousel 10 can drive through tooth's socket 13 and remove connecting plate 11 and the pointer 17 synchronous intermittent movement who is connected with it through carriage release lever 16, can mark the training number of times for the training person through pointer 17 and scale 9, and spacing tooth 20 and ratchet 12 can restrict to remove connecting plate 11 and kick-back simultaneously.
Example two
As shown in fig. 1 to 3, compared with the first embodiment, the portable respiration training device for department of respiratory medicine provided by the present invention further includes a training device main body 1, a respiration tube 2, an intake valve 22, an exhaust valve 23 and a suction cup 24, wherein the training device main body 1 is internally installed with a wind-collecting cover 5, the wind-collecting cover 5 is rotatably connected with a first rotating shaft 6, the first rotating shaft 6 is fixedly connected with an impeller 7 and a circular turntable 10, the rotating shaft 6 is driven by the gas generated by respiration of a trainer to rotate together through the impeller 7, and one end of the first rotating shaft 6 penetrates through one side of the training device main body 1; the protection casing 8 is installed to one side of training ware main part 1, scale 9 is installed to one side of protection casing 8, circular carousel 10 is located the inside of protection casing 8, and one side of circular carousel 10 is provided with and removes connecting plate 11, one side and the training ware main part 1 sliding connection of removing connecting plate 11, the opposite side passes through carriage release lever 16 fixedly connected with pointer 17, pointer 17 is located one side of scale 9, trachea 2 admission valve 22, discharge valve 23 and sucking disc 24 are installed respectively in one side of training ware main part 1, and the one end fixedly connected with rubber sleeve 3 and the mouthpiece 4 of trachea 2, and rubber sleeve 3 is used for preventing the gas of training person's exhalation and spills, the cone cover is installed to one side of wind-collecting cover 5, the cone cover is located the below of trachea 2, and the cone cover is used for collecting the gas of training person's exhalation, makes it can advance from impeller 7, a sliding opening is formed in one side of the protective cover 8, the moving rod 16 is connected with the sliding opening in a sliding manner, tooth grooves 13 are formed in the circular rotary table 10 and one side of the moving connecting plate 11, ratchets 12 are installed on the other side of the moving connecting plate 11, the circular rotary table 10 is in meshing transmission with the moving connecting plate 11, the number of the tooth grooves 13 formed in the circular rotary table 10 can be determined according to the moving distance of the moving connecting plate 11, a fixed block 18 is fixedly connected to the inside of the protective cover 8, a second rotating shaft 19 is rotatably connected to one side of the fixed block 18, limiting teeth 20 are fixedly connected to the second rotating shaft 19, one end of the second rotating shaft 19 penetrates through one side of the protective cover 8, the limiting teeth 20 are meshed with the ratchets 12, a tension spring 21 is fixedly connected to one side of the limiting teeth 20, one end of the tension spring 21 is fixedly connected with the protective cover 8, and a baffle 14 is fixedly connected to one side of the moving connecting plate 11, one side of baffle 14 fixedly connected with reset spring 15, reset spring 15's one end and protection casing 8 fixed connection.
In this embodiment, when the training times need to be cleared, the second rotating shaft 19 is rotated to drive the limiting teeth 20 to be away from the ratchet teeth 12 on the moving connecting plate 11, at this time, the moving connecting plate 11 drives the moving connecting plate 11, the moving rod 16 and the pointer 17 to return to the original positions through the acting force of the return spring 15, and when the second rotating shaft 19 is released, the limiting teeth 20 are re-engaged with the ratchet teeth 12 on the moving connecting plate 11 through the acting force of the tension spring 21.
The above embodiments are merely some preferred embodiments of the present invention, and those skilled in the art can make various alternative modifications and combinations of the above embodiments based on the technical solution of the present invention and the related teaching of the above embodiments.
Claims (8)
1. The utility model provides a breathe dedicated portable breathing training ware of internal medicine, includes training ware main part (1), respiratory tube (2), admission valve (22), discharge valve (23) and sucking disc (24), its characterized in that: a wind collecting cover (5) is installed inside the trainer main body (1), the wind collecting cover (5) is rotatably connected with a first rotating shaft (6), the first rotating shaft (6) is fixedly connected with an impeller (7) and a circular rotating disc (10), and one end of the first rotating shaft (6) penetrates through one side of the trainer main body (1);
protection casing (8) are installed to one side of training ware main part (1), scale (9) are installed to one side of protection casing (8), circular turntable (10) are located the inside of protection casing (8), and one side of circular turntable (10) is provided with and removes connecting plate (11), remove one side and training ware main part (1) sliding connection of connecting plate (11), the opposite side passes through carriage release lever (16) fixedly connected with pointer (17), pointer (17) are located one side of scale (9).
2. The portable breathing training device special for respiratory medicine as claimed in claim 1, wherein the breathing tube (2) air inlet valve (22), air outlet valve (23) and suction cup (24) are respectively installed on one side of the training device body (1), and one end of the breathing tube (2) is fixedly connected with the rubber sleeve (3) and the mouthpiece (4).
3. The portable breathing training aid special for department of respiratory medicine according to claim 1, wherein a cone-shaped cover is installed on one side of the air collecting cover (5), and the cone-shaped cover is positioned below the breathing tube (2).
4. The portable respiration training device for department of respiratory medicine of claim 1, wherein a sliding opening is opened on one side of the protective cover (8), and the moving rod (16) is connected with the sliding opening in a sliding manner.
5. The special portable respiration training device for department of respiration as claimed in claim 1, wherein one side of the circular turntable (10) and one side of the movable connecting plate (11) are both provided with tooth grooves (13), the other side of the movable connecting plate (11) is provided with ratchets (12), and the circular turntable (10) and the movable connecting plate (11) are in meshing transmission.
6. The portable breathing training device special for department of respiratory medicine according to claim 5, wherein the inside of the protection cover (8) is fixedly connected with a fixed block (18), one side of the fixed block (18) is rotatably connected with a second rotating shaft (19), the second rotating shaft (19) is fixedly connected with a limiting tooth (20), one end of the second rotating shaft (19) penetrates through one side of the protection cover (8), and the limiting tooth (20) is meshed with the ratchet (12).
7. The special portable respiration training device for department of respiratory medicine according to claim 6, wherein one side of the limit tooth (20) is fixedly connected with a tension spring (21), and one end of the tension spring (21) is fixedly connected with the protective cover (8).
8. The portable respiration training device special for department of respiratory medicine according to claim 1, wherein a baffle (14) is fixedly connected to one side of the movable connecting plate (11), a return spring (15) is fixedly connected to one side of the baffle (14), and one end of the return spring (15) is fixedly connected with the protective cover (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210030272.0A CN114259710A (en) | 2022-01-12 | 2022-01-12 | Breathe dedicated portable breathing training ware of internal medicine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210030272.0A CN114259710A (en) | 2022-01-12 | 2022-01-12 | Breathe dedicated portable breathing training ware of internal medicine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114259710A true CN114259710A (en) | 2022-04-01 |
Family
ID=80832922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210030272.0A Withdrawn CN114259710A (en) | 2022-01-12 | 2022-01-12 | Breathe dedicated portable breathing training ware of internal medicine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114259710A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115920331A (en) * | 2022-12-29 | 2023-04-07 | 中国人民解放军陆军军医大学第二附属医院 | An assisting device for breathing exercise in chronic obstructive pulmonary disease |
| CN118403340A (en) * | 2023-02-16 | 2024-07-30 | 成飞医院 | Breathing training device and method |
-
2022
- 2022-01-12 CN CN202210030272.0A patent/CN114259710A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115920331A (en) * | 2022-12-29 | 2023-04-07 | 中国人民解放军陆军军医大学第二附属医院 | An assisting device for breathing exercise in chronic obstructive pulmonary disease |
| CN118403340A (en) * | 2023-02-16 | 2024-07-30 | 成飞医院 | Breathing training device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206964903U (en) | Day conventional one-way gas flow breathing mask | |
| CN203954096U (en) | Ventilatory muscle training and vibrated sputum elimination integrator | |
| CN112843627B (en) | A pulmonary function rehabilitation training ware for breathing internal medicine | |
| CN115282569A (en) | Breathe internal medicine with recovered device of pulmonary function convenient to adjust respiratory resistance | |
| CN111658923B (en) | An intelligent respiratory rehabilitation device that can assist in expectoration, pronunciation and assessment | |
| CN114259710A (en) | Breathe dedicated portable breathing training ware of internal medicine | |
| CN112619070B (en) | Dual-purpose breathing training ware | |
| CN214388762U (en) | Department of respiration patient's pulmonary function rehabilitation training device | |
| CN215461851U (en) | Lung function auxiliary recovery training device for department of respiration | |
| CN115025465A (en) | Chest surgery resumes with lung and breathes trainer | |
| CN211513328U (en) | Portable training ware of breathing in and exhaling flesh breathing | |
| CN211585099U (en) | Breathe internal medicine vital capacity training appearance | |
| CN207591232U (en) | A kind of pulmonary function trainer | |
| CN208660261U (en) | A kind of division of respiratory disease lung function recovery training appliance for recovery | |
| CN219185378U (en) | Respiration training device | |
| CN218529703U (en) | Department of respiration patient's pulmonary function rehabilitation training device | |
| TWM597632U (en) | Nasal plug type respiration training apparatus with respiratory resistance | |
| CN210472975U (en) | Thoracic surgery postoperative breathes and tempers nursing device | |
| CN221752197U (en) | A breathing recovery assist device | |
| CN221432077U (en) | Respiration training device | |
| CN210845182U (en) | Breathe recovered ware of internal medicine pulmonary function | |
| CN114288620A (en) | Pediatric internal medicine lung function rehabilitation physiotherapy device | |
| CN217593745U (en) | Vital capacity trainer of department of respiration | |
| CN223490194U (en) | A lung capacity training device | |
| CN213724705U (en) | A breathing training device for pulmonary rehabilitation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220401 |