CN215916073U - Oral trachea cannula fixing device suitable for toothless patient - Google Patents
Oral trachea cannula fixing device suitable for toothless patient Download PDFInfo
- Publication number
- CN215916073U CN215916073U CN202120179328.XU CN202120179328U CN215916073U CN 215916073 U CN215916073 U CN 215916073U CN 202120179328 U CN202120179328 U CN 202120179328U CN 215916073 U CN215916073 U CN 215916073U
- Authority
- CN
- China
- Prior art keywords
- patient
- fixing
- bite block
- trachea cannula
- fixing 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.)
- Expired - Fee Related
Links
- 210000003437 trachea Anatomy 0.000 title claims abstract description 44
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000000741 silica gel Substances 0.000 claims description 12
- 229910002027 silica gel Inorganic materials 0.000 claims description 12
- 238000002627 tracheal intubation Methods 0.000 claims description 12
- 210000000214 mouth Anatomy 0.000 claims description 11
- 239000012528 membrane Substances 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 230000006378 damage Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 210000004379 membrane Anatomy 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- 206010036790 Productive cough Diseases 0.000 description 1
- 208000028990 Skin injury Diseases 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 108010025899 gelatin film Proteins 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000005190 lower gingiva Anatomy 0.000 description 1
- 210000002200 mouth mucosa Anatomy 0.000 description 1
- 238000012141 orotracheal intubation Methods 0.000 description 1
- 230000036407 pain Effects 0.000 description 1
- 210000003019 respiratory muscle Anatomy 0.000 description 1
- 210000001202 rhombencephalon Anatomy 0.000 description 1
- 210000003802 sputum Anatomy 0.000 description 1
- 208000024794 sputum Diseases 0.000 description 1
- 210000005189 upper gingiva Anatomy 0.000 description 1
Images
Landscapes
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The utility model discloses an oral trachea cannula fixing device suitable for a toothless patient, which comprises: the fixing cover body comprises a fixing cover, a fixing belt body and a fixing belt body, wherein the fixing cover is provided with a through hole for an air supply pipe to penetrate through and the fixing belt body is arranged at two ends of the fixing cover; the bite block assembly comprises a lower bite block and an upper bite block, the lower bite block and the upper bite block are respectively arranged on the inner wall of the fixed cover and are arranged corresponding to the positions of teeth of a patient, and the upper bite block can move in the up-and-down direction; and the trachea cannula fixing component is inserted in the through hole and used for clamping the trachea cannula. The utility model provides an oral trachea cannula fixing device suitable for a toothless patient, which can effectively fix a trachea cannula in the mouth of the toothless patient by arranging a trachea cannula fixing component at a fixing cover, thereby effectively avoiding the problems of gum damage and trachea cannula deformation.
Description
Technical Field
The utility model relates to the technical field of medical auxiliary instruments, in particular to an oral trachea cannula fixing device suitable for a toothless patient.
Background
In the treatment of critical patients and critical patients in clinical practice, the insertion of a tracheal cannula through the oral cavity is a common method for resuscitation, respiratory muscle paralysis rescue, surgical anesthesia, airway opening and the like of patients.
The patient without teeth has no front teeth to fix the tooth pad, and the clear-headed patient uses the tongue to push out the tooth pad, so that the tracheal cannula is separated along with the tooth pad, and the unplanned tube drawing rate is increased; because the gauze of the trachea cannula frequently needs to be replaced, the perioral skin injury, the gum injury, the oral mucosa complication and the like of the patient are easily caused, the pain of the patient is increased, the hospitalization cost of the patient is increased, the workload of a nurse is increased, and the efficiency is also reduced.
For the foregoing reasons, there is a strong need to design an oral endotracheal intubation fixation device suitable for use in an edentulous patient that overcomes the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provides an oral tracheal intubation fixing device suitable for a toothless patient.
In order to achieve the above purpose, the present invention mainly provides the following technical solutions:
an oral endotracheal tube securement device adapted for use with a toothless patient, comprising:
the fixing cover body comprises a fixing cover, a fixing belt body and a fixing belt body, wherein the fixing cover is provided with a through hole for an air supply pipe to penetrate through and the fixing belt body is arranged at two ends of the fixing cover;
the bite block assembly comprises a lower bite block and an upper bite block, the lower bite block and the upper bite block are respectively arranged on the inner wall of the fixed cover and are arranged corresponding to the positions of teeth of a patient, and the upper bite block can move in the up-and-down direction;
and the trachea cannula fixing component is inserted in the through hole and used for clamping the trachea cannula.
Further, the tracheal cannula fixing component is cylindrical; which comprises an outer wall, an air bag cavity and an inner cushion from outside to inside in sequence;
the air bag cavity is an annular air bag annularly arranged between the outer wall and the inner cushion, and an inflation nozzle of the air bag cavity is connected with an inflation assembly.
Furthermore, a plurality of lugs are uniformly distributed on the outer wall and attached to the periphery of the fixing cover corresponding to the through holes; the ear part is screwed into the corresponding positioning hole on the fixed cover through a positioning bolt.
Further, the outer wall is made of medical plastic;
the inner pad is made of an anti-slip silica gel pad.
Furthermore, a screw rod is arranged on the back of the upper bite block, penetrates out of a screw hole correspondingly arranged on the fixing cover and is fixedly connected with the screw rod through a nut;
the screw rods are two and are respectively arranged at the left end and the right end of the fixed cover.
Furthermore, a dustproof silicon film is arranged on one side of each screw hole, which corresponds to the outer wall of the fixing cover;
the dustproof silica gel film is attached to the position of the screw hole.
Furthermore, the upper bite block and the lower bite block comprise an outer cushion composed of medical silica gel and a soft silica gel cushion laid in the outer cushion;
the outer pad is respectively connected with the fixed cover.
Furthermore, the fixed cover is rectangular and is buckled on the oral cavity of the patient; the fixed cover has a radian which is in accordance with the lip shape of the human mouth;
and a layer of pressure reducing pad is attached to the inner wall of the fixed cover.
Furthermore, the fixed belt body comprises elastic belt bodies which are respectively arranged at two sides and are provided with ear hanging parts;
the end parts of the fixing belt bodies are connected by thread gluing.
Compared with the prior art, the utility model has the following beneficial effects:
the oral trachea cannula fixing device suitable for the toothless patient is suitable for the toothless patient by arranging the fixing cover body, the bite block assembly and the trachea cannula fixing assembly, not only can fix the teeth of the patient, but also can effectively fix the trachea cannula to prevent the trachea cannula from moving;
according to the oral trachea cannula fixing device suitable for the toothless patient, the trachea cannula is inserted into the trachea cannula fixing component and is fully fixed by injecting gas, so that the problem of tube falling caused by movement of the position of the trachea cannula is solved;
the oral trachea cannula fixing device suitable for the toothless patient has the characteristics of novel structural design, convenience and practicability, so that the toothless patient can wear the tooth pad comfortably, and the gum of the toothless patient is prevented from being worn; the toothless patient can wear the tooth pad comfortably, and the gum of the toothless patient can be prevented from being worn.
The foregoing is a summary of the present invention, and in order to provide a clear understanding of the technical means of the present invention and to enable the same to be carried into effect in accordance with the present specification, the following detailed description of the preferred embodiments of the present invention is provided in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the oral endotracheal tube fixing device of the present invention adapted for use in a non-dental patient;
FIG. 2 is another schematic view of the present invention showing an oral endotracheal tube fixing device adapted for use in a non-dental patient;
FIG. 3 is a schematic view of the upper bite block of the present invention;
FIG. 4 is a schematic structural view of an endotracheal tube fixing assembly of the present invention;
FIG. 5 is a schematic structural view of the inflation assembly of the present invention;
description of reference numerals:
1. a fixed cover body; 11. a fixed cover; 12. a through hole; 13. fixing the belt body; 111. positioning holes; 112. a screw hole; 15. a pressure reducing pad; 131. an elastic belt body; 132. an ear-hanging part; 133. sticking a thread;
2. a bite block assembly; 21. a lower bite block; 22. an upper bite block; 23. a screw; 211. an outer cushion; 212. a soft silica gel pad;
3. a tracheal cannula fixation assembly; 31. an outer wall; 32. a balloon lumen; 33. an inner cushion; 321. an air charging nozzle; 34. an ear portion; 35. positioning the bolt;
4. an inflation assembly; 41. an inflation tube; 42. a manual inflator;
Detailed Description
To further illustrate the technical means and effects of the present invention for achieving the intended purpose of the present invention, the following detailed description will be given to the detailed embodiments, structures, features and effects of the oral endotracheal intubation fixing device for the toothless patient according to the present invention with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1 to 5, the oral endotracheal tube fixing device of the present invention adapted to a toothless patient includes:
the fixing cover comprises a fixing cover body 1 and a fixing cover body, wherein the fixing cover body 1 comprises a fixing cover 11, a through hole 12 formed in the fixing cover body and used for allowing an air supply pipe to penetrate through, and fixing belt bodies 13 arranged at two ends of the fixing cover body;
a bite block assembly 2 including a lower bite block 21 and an upper bite block 22 which are respectively provided at an inner wall of the fixing cover 11 and are disposed corresponding to positions of teeth of a patient and the upper bite block 22 is movable in an up-and-down direction;
the trachea cannula fixing component 3 is inserted into the through hole 12 and used for clamping the trachea cannula.
The utility model provides an oral trachea cannula fixing device that is applicable to no tooth patient of the embodiment of this application, its in-process of using:
the medical staff selects the trachea cannula fixing device with proper specification and size according to the condition of the patient, firstly, the position of the upper bite block 22 can be adjusted according to the condition of the patient, and after the device is adjusted to the proper position, the device is placed in the oral cavity of the patient, so that the upper and lower gingiva of the device respectively correspond to the upper bite block 22 and the lower bite block 21; then the fixing belt body 13 is wound at the position behind the brain from the ear part 34 for fixing; after the trachea cannula is fixed, the trachea cannula can be inserted into the oral cavity from the trachea cannula fixing component 3 to be inserted into a proper position, and medical personnel pinch the manual inflator pump 42 to rapidly inflate the annular air bag of the trachea cannula fixing component 3 so as to fully fix the trachea cannula and avoid the trachea cannula from displacing.
It should be noted that when the patient's mouth needs to be changed in size or another tube such as a sputum suction tube needs to be inserted, the position of the upper bite block 22 is adjusted to insert another tube.
As shown in fig. 4, the oral endotracheal tube fixing device of the present invention is suitable for a toothless patient, wherein the endotracheal tube fixing component 3 is cylindrical; which comprises an outer wall 31, an air bag cavity 32 and an inner cushion 33 from outside to inside in sequence;
the air bag cavity 32 is an annular air bag annularly arranged between the outer wall 31 and the inner cushion 33, and an inflating nozzle 321 of the air bag cavity is connected with an inflating assembly 4.
The oral trachea cannula fixing device suitable for the toothless patient is characterized in that the trachea cannula fixing component 3 is multi-layer, an annular air bag is arranged on the inner wall of the trachea cannula fixing component, and the purpose of fixing the trachea cannula can be achieved in an inflating mode.
It should be further noted that the inflation assembly 4 is composed of a common manual inflator 42 and an inflation tube 41, and can be stored after being used; the inflation assembly 4 is small in size because it inflates the annular bladder, which is small in volume.
As shown in fig. 4, in the orotracheal intubation fixation device for the toothless patient according to the present invention, a plurality of ear portions 34 are uniformly distributed on the outer wall 31, and the ear portions 34 are attached to the periphery of the fixation cover 11 corresponding to the through holes 12; the ear portion 34 is screwed into a positioning hole 111 correspondingly formed on the fixing cover 11 through a positioning bolt 35.
The oral trachea cannula fixing device suitable for the toothless patient of the embodiment of the application is characterized in that the trachea cannula fixing component 3 is detachably arranged on the fixing cover 11 and is fixed on the fixing cover 11 through the positioning bolt 35.
As shown in fig. 4, the oral endotracheal intubation fixing device of the present invention, which is suitable for a toothless patient, is characterized in that the outer wall 31 is made of medical plastic; the inner pad 33 is made of an anti-slip silica gel pad.
As shown in fig. 3, in the oral endotracheal intubation fixing device applicable to the toothless patient according to the present invention, a screw 23 is disposed on the back of the upper bite block 22, and penetrates through a screw hole 112 correspondingly disposed on the fixing cover 11 and is fixedly connected with the screw through a nut; the number of the screws 23 is two, and the screws are respectively arranged at the left end and the right end of the fixed cover 11.
In the oral endotracheal intubation fixing device applied to the toothless patient according to the embodiment of the present application, in order to facilitate the position movement of the upper bite block 22, the screw 23 is specifically provided to be inserted into the screw hole 112 at the corresponding position, so that the position adjustment thereof can be facilitated.
As shown in fig. 2, in the oral endotracheal intubation fixing device applicable to the toothless patient of the present invention, a dustproof silicone membrane is disposed on one side of each screw hole 112 corresponding to the outer wall 31 of the fixing cover 11;
the dustproof silicone membrane is attached to the position of the screw hole 112.
The oral trachea cannula fixing device suitable for the toothless patient of the embodiment of the application is specially provided with a dustproof silicon membrane at the screw hole 112 in order to avoid dust and other inlet cavities.
As shown in fig. 2, the oral endotracheal intubation fixing device of the present invention is suitable for a toothless patient, wherein the upper bite block 22 and the lower bite block 21 comprise an outer cushion 211 made of medical silica gel and a soft silica gel cushion 212 laid therein; the outer pads 211 are connected to the fixing covers 11, respectively.
The oral trachea cannula fixing device suitable for the toothless patient of the embodiment of the application, should go up bite-block 22 and lower bite-block 21 and comprise outer pad 211 and soft silica gel pad 212, not only be convenient for with should go up bite-block 22 and lower bite-block 21 be fixed in this fixed cover 11 on and avoid the injury to the gum of trading.
As shown in fig. 1, the fixing device for an oral endotracheal intubation in accordance with the present invention is suitable for a toothless patient, wherein the fixing cover 11 is rectangular and is fastened to the oral cavity of the patient; the fixed cover 11 has a radian which is in accordance with the lip shape of the human mouth; a layer of pressure reducing pad 15 is attached to the inner wall of the fixed cover 11.
The oral trachea cannula fixing device suitable for the toothless patient of the embodiment of the application is characterized in that the fixing cover 11 is specially arranged to be arc-shaped and is in form fit with the mouth and the lip of the human body in order to improve the comfort degree of the patient.
As shown in fig. 1, the fixing device for oral endotracheal intubation according to the present invention, which is suitable for a toothless patient, comprises an elastic band body 131 disposed at two sides and provided with an ear hanging portion 132; the ends of the fixing belt body 13 are connected by a hook and loop fastener 133.
The oral endotracheal intubation fixing device for the toothless patient according to the embodiment of the present application is configured such that the fixing band body 13 is sufficiently fixed around the ear 34 of the patient at the hindbrain.
The present invention has been further described with reference to the examples, but the present invention is not limited to the above-described embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (9)
1. An oral endotracheal intubation fixation device adapted for use with a non-dental patient, characterized in that it comprises:
the fixing cover comprises a fixing cover body (1) and a fixing cover body, wherein the fixing cover body (1) comprises a fixing cover (11), a through hole (12) for an air supply pipe to penetrate through and fixing belt bodies (13) arranged at two ends of the fixing cover body;
the bite block assembly (2) comprises a lower bite block (21) and an upper bite block (22), the lower bite block and the upper bite block are respectively arranged on the inner wall of the fixed cover (11) and are arranged corresponding to the positions of teeth of a patient, and the upper bite block (22) can move in the up-and-down direction;
the trachea cannula fixing component (3) is inserted into the through hole (12) and used for clamping the trachea cannula.
2. The orotracheal tube fixing device for use in an edentulous patient of claim 1, wherein:
the trachea cannula fixing component (3) is cylindrical; which comprises an outer wall (31), an air bag cavity (32) and an inner cushion (33) from outside to inside in sequence;
the air bag cavity (32) is an annular air bag annularly arranged between the outer wall (31) and the inner cushion (33), and an inflating assembly (4) is connected to an inflating nozzle (321) of the air bag cavity.
3. The orotracheal tube fixing device for use in an edentulous patient of claim 2, wherein:
a plurality of lugs (34) are uniformly distributed on the outer wall (31), and the lugs (34) are attached to the periphery of the fixed cover (11) corresponding to the through holes (12); the ear part (34) is screwed into a positioning hole (111) correspondingly arranged on the fixed cover (11) through a positioning bolt (35).
4. An oral endotracheal tube fixing device according to claim 3 adapted for use in a non-dental patient, characterized in that:
the outer wall (31) is made of medical plastics;
the inner pad (33) is made of an anti-slip silica gel pad.
5. The orotracheal tube fixing device for use in an edentulous patient of claim 1, wherein:
the back of the upper bite block (22) is provided with a screw rod (23) which penetrates out of a screw hole (112) correspondingly arranged on the fixing cover (11) and is fixedly connected with the screw rod through a nut;
the number of the screw rods (23) is two, and the screw rods are respectively arranged at the left end and the right end of the fixed cover (11).
6. An oral endotracheal tube fixing device according to claim 5 adapted for use in a non-dental patient, characterized in that:
a dustproof silicon film is arranged on one side of each screw hole (112) corresponding to the outer wall (31) of the fixed cover (11);
the dustproof silicone membrane is attached to the position of the screw hole (112).
7. The orotracheal tube fixing device for use in an edentulous patient of claim 1, wherein:
the upper bite block (22) and the lower bite block (21) comprise an outer cushion (211) made of medical silica gel and a soft silica gel cushion (212) laid in the outer cushion;
the outer pads (211) are respectively connected with the fixed cover (11).
8. The orotracheal tube fixing device for use in an edentulous patient of claim 1, wherein:
the fixed cover (11) is rectangular and is buckled at the oral cavity part of a patient; the fixed cover (11) has a radian which is in accordance with the lip shape of the human mouth;
and a layer of pressure reducing pad (15) is attached to the inner wall of the fixed cover (11).
9. The orotracheal tube fixing device for use in an edentulous patient of claim 1, wherein:
the fixed belt body (13) comprises elastic belt bodies (131) which are respectively arranged at two sides and are provided with ear-hanging parts (132);
the end parts of the fixed belt body (13) are connected by a thread gluing (133).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120179328.XU CN215916073U (en) | 2021-01-22 | 2021-01-22 | Oral trachea cannula fixing device suitable for toothless patient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120179328.XU CN215916073U (en) | 2021-01-22 | 2021-01-22 | Oral trachea cannula fixing device suitable for toothless patient |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215916073U true CN215916073U (en) | 2022-03-01 |
Family
ID=80409523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120179328.XU Expired - Fee Related CN215916073U (en) | 2021-01-22 | 2021-01-22 | Oral trachea cannula fixing device suitable for toothless patient |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215916073U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117244145A (en) * | 2023-11-04 | 2023-12-19 | 南方医科大学南方医院 | Anti-drop bite-block for tracheal cannula |
-
2021
- 2021-01-22 CN CN202120179328.XU patent/CN215916073U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117244145A (en) * | 2023-11-04 | 2023-12-19 | 南方医科大学南方医院 | Anti-drop bite-block for tracheal cannula |
| CN117244145B (en) * | 2023-11-04 | 2024-04-26 | 南方医科大学南方医院 | Anti-drop bite-block for tracheal cannula |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0746368B1 (en) | Cuffed oro-pharyngeal airway | |
| AU2015310984B2 (en) | Sealing mechanism for anaesthetic airway devices | |
| CN106860998A (en) | A kind of teeth pad for tracheal cannula | |
| US5718225A (en) | System for supporting endotracheal tubes in pediatric patients and method of using same | |
| US20050092329A1 (en) | Nasal continuous positive airway pressure cannula device and securement for infants | |
| CN215916073U (en) | Oral trachea cannula fixing device suitable for toothless patient | |
| CN108939238A (en) | The mouth shape dilator and its application method of oral trachea cannula can be fixed | |
| CN204106783U (en) | A kind of tracheal intubation, bite-block combination set | |
| CN208973808U (en) | A kind of medical anti-suffocation gastroscope bite block | |
| CN221845730U (en) | Novel trachea cannula | |
| CN208049156U (en) | Split type mouth plugs in fixator | |
| CN220025819U (en) | Tracheal catheter fixing device | |
| CN205181953U (en) | Lock catch type tracheal catheter fixation device | |
| CN217938859U (en) | Teeth cushion for trachea cannula | |
| CN219662557U (en) | Painless gastroscope is with airtight anesthesia face guard that ventilates | |
| CN211245029U (en) | Disposable three-fork shape trachea cannula fixer | |
| CN215309436U (en) | Double-cuff fixed stomach tube air bag type noninvasive mask | |
| CN219185416U (en) | Adjustable trachea cannula fixing device | |
| CN218106526U (en) | Tracheal catheter fixing device | |
| CN219110515U (en) | Fixer for trachea cannula | |
| CN220125289U (en) | Trachea cannula tooth pad | |
| CN217391350U (en) | Tracheal intubation fixing sleeve | |
| CN221888938U (en) | Bite-block for trachea cannula | |
| CN215019277U (en) | Bite-block and first aid medical device | |
| CN211634764U (en) | Novel split type oral trachea cannula fixing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220301 |