CN114631909B - Oral cavity tooth-missing part specification measuring equipment adopting optical imaging technology - Google Patents
Oral cavity tooth-missing part specification measuring equipment adopting optical imaging technology Download PDFInfo
- Publication number
- CN114631909B CN114631909B CN202210280933.5A CN202210280933A CN114631909B CN 114631909 B CN114631909 B CN 114631909B CN 202210280933 A CN202210280933 A CN 202210280933A CN 114631909 B CN114631909 B CN 114631909B
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- Prior art keywords
- cover plate
- shaped cover
- tooth
- department
- optical imaging
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- 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.)
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- 238000005516 engineering process Methods 0.000 title claims abstract description 13
- 238000012634 optical imaging Methods 0.000 title claims abstract description 13
- 210000000214 mouth Anatomy 0.000 title claims abstract description 12
- 206010044048 Tooth missing Diseases 0.000 title description 6
- 230000007812 deficiency Effects 0.000 claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000741 silica gel Substances 0.000 claims abstract description 6
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 6
- 239000000945 filler Substances 0.000 claims description 12
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 5
- 238000005259 measurement Methods 0.000 abstract description 8
- 229910052709 silver Inorganic materials 0.000 abstract description 6
- 239000004332 silver Substances 0.000 abstract description 6
- 238000003384 imaging method Methods 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000003760 hair shine Effects 0.000 abstract 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000004053 dental implant Substances 0.000 description 2
- 210000004513 dentition Anatomy 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000036346 tooth eruption Effects 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010883 osseointegration Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/04—Measuring instruments specially adapted for dentistry
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
- A61B5/0088—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for oral or dental tissue
Abstract
The application discloses an oral cavity tooth deficiency department specification measuring equipment adopting an optical imaging technology, which comprises a U-shaped cover plate, a light display measuring mechanism, a tooth tip top plate, an incandescent flash lamp, a cassette and a radar scanner. This application is rational in infrastructure, put U type cover plate cover in patient's missing tooth department and the silica gel wall of U type cover plate through deformation and the tooth in missing tooth department both sides in close contact, easily improve imaging measurement's accuracy, can utilize missing tooth department to form dark space, the printing opacity shines the reaction zone and forms the image area the same with missing tooth department shape, can scan the silver that breaks out, and present the scanning point of corresponding quantity on radar display, calculate according to the quantity of scanning point and every square hole size simultaneously, be favorable to obtaining missing tooth department's area size and the width size of each district, be convenient for the quick measurement of saving time of stomatologist learn department patient missing tooth department specification size.
Description
Technical Field
The application relates to the field of dental implant in stomatology, in particular to an oral cavity tooth deficiency position specification measuring device adopting an optical imaging technology.
Background
Dental implantation, also called "implant denture", is one of the conventional treatment methods for repairing dentition defect or dentition deficiency, clinically, good osseointegration between implant and bone tissue is required, and titanium alloy are the most widely used dental implant materials at present due to good biocompatibility and ideal mechanical properties.
The size of the tooth missing part of the patient directly determines the subsequent tooth implantation treatment effect, so that the measurement of the tooth missing part size is necessary, the space of a doctor's room is small, the placement of large-scale medical detection image equipment is not facilitated, the number of doctor's patients is large, the time spent by the patient in walking between the doctor's room and the detection department is large, the improvement of the doctor's treatment efficiency is not facilitated, and the measurement equipment capable of conveniently calculating and measuring the size of the tooth missing part area and the like is lacking. Therefore, an apparatus for measuring the specification of the oral cavity tooth deficiency part by adopting an optical imaging technology is provided for solving the problems.
Disclosure of Invention
The invention aims to solve the problems and provide an oral cavity tooth missing part specification measuring device adopting an optical imaging technology.
The invention realizes the purpose through the following technical scheme that the oral cavity tooth deficiency part specification measuring equipment adopting the optical imaging technology comprises a U-shaped cover plate, a light display measuring mechanism, a tooth tip top plate, an incandescent flash lamp, a cassette and a radar scanner, wherein the U-shaped cover plate is of a silica gel structure, a rectangular opening is formed in one side plate of the U-shaped cover plate, a cassette box opening is arranged on an outer side port of the rectangular opening, the radar scanner is arranged in the cassette, the tooth tip top plate is clamped at the top of a raised strip table, the raised strip table is arranged at the inner bottom of the U-shaped cover plate, and the incandescent flash lamp is embedded and arranged on the side wall of the other side of the U-shaped cover plate;
the light display measuring mechanism comprises a rear transparent sheet, a front transparent sheet and a light reaction assembly, wherein the light reaction assembly is positioned between the rear transparent sheet and the front transparent sheet, the light reaction assembly comprises silver bromide fillers, a containing ring and micro square grid plates, the containing ring is arranged in each square grid hole of each micro square grid plate, the silver bromide fillers are arranged in the containing ring, and the front surface and the rear surface of each micro square grid plate are respectively in surface sealing contact with the front transparent sheet and the rear transparent sheet.
Further, the size of each square hole of the micro square grid plate is 2mmx2mm, and the micro square grid plate, the front transparent sheet, the rear transparent sheet and the accommodating ring are all made of special stealth materials.
Further, a frame is arranged in the rectangular opening, and four walls in the frame are connected with the edges of the micro square grid plate, the front transparent sheet edge and the rear transparent sheet edge.
Further, the radar scanner is electrically connected with a radar display arranged on the shell through a cable, and three electric control switches are arranged at the bottom of the surface of the shell at equal intervals.
Further, the inner wall of the U-shaped cover plate is tightly contacted with the inner surface and the outer surface of the teeth through the deformation of silica gel, and a dark space is formed between the inner wall of the U-shaped cover plate and the missing teeth and between the inner wall of the U-shaped cover plate and the adjacent teeth.
Further, the clamping groove is formed in the top surface of the raised line table, and the clamping groove is clamped with the clamping block structure positioned at the bottom of the tooth tip top placing plate.
Further, a tooth biting groove is formed in the bottom of the U-shaped cover plate, a lamp holder is mounted on one side surface of the U-shaped cover plate, and the lamp holder is electrically connected with the incandescent flash lamp.
The beneficial effects of the invention are as follows: the U-shaped cover plate is sleeved at the missing teeth of a patient, the silica gel wall of the U-shaped cover plate is tightly contacted with teeth on two sides of the missing teeth through deformation, imaging measurement accuracy is easy to improve, a dark space can be formed at the missing teeth, an incandescent flash lamp is connected through a corresponding electric control switch on the operating shell to emit strong light, the white strong light penetrates through the missing teeth and the front transparent thin sheet to serve as silver bromide filler reaction conditions, the effect that silver is formed by decomposing the silver bromide filler into a silver-containing ring is achieved, the light-transmitting irradiation reaction area forms an image area with the same shape as the missing teeth, the decomposed silver can be scanned, the radar display is provided with a corresponding number of scanning points, meanwhile, calculation is carried out according to the number of the scanning points and the size of each square hole, the area size of the missing teeth and the width size of each section are facilitated, and an stomatologist can rapidly and time-saving measure and learn the size of the missing teeth of the patient.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a perspective view of the overall structure of one embodiment of the present application;
FIG. 2 is a right side perspective view of a U-shaped hood plate structure according to one embodiment of the present application;
FIG. 3 is a left side perspective view of a U-shaped hood plate structure according to one embodiment of the present application;
FIG. 4 is a schematic view of a structure of a light-measuring mechanism according to an embodiment of the present application;
FIG. 5 is an enlarged view of a partial structure of a photoreaction component according to an embodiment of the present application;
fig. 6 is a schematic diagram of a cassette and radar scanner connection structure according to an embodiment of the present application.
In the figure: 1. a housing; 2. a radar display; 3. an electric control switch; 4. a cable; 5. a U-shaped cover plate; 6. a rectangular opening; 7. a frame; 8. a light display measuring mechanism; 81. a rear transparent sheet; 82. a front transparent sheet; 83. a photoreaction component; 831. silver bromide filler; 832. a ring is arranged; 833. micro square grid plate; 9. a lamp holder; 10. a cusp ejection plate; 11. a clamping groove; 12. a convex strip table; 13. tooth biting groove; 14. an incandescent flash; 15. cassette; 16. a radar scanner.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe the present application and its embodiments and are not intended to limit the indicated device, element or component to a particular orientation or to be constructed and operated in a particular orientation.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "configured," "provided," "connected," "coupled," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1-6, an apparatus for measuring the specification of a dental defect site by adopting an optical imaging technology comprises a U-shaped cover plate 5, a light display measuring mechanism 8, a dental tip top plate 10, an incandescent flash lamp 14, a cassette 15 and a radar scanner 16, wherein the U-shaped cover plate 5 is of a silica gel structure, a rectangular opening 6 is formed in a side plate of one side of the U-shaped cover plate 5, the cassette 15 is arranged on an outer side port of the rectangular opening 6, the radar scanner 16 is arranged in the cassette 15, the dental tip top plate 10 is clamped at the top of a raised strip table 12, the raised strip table 12 is arranged at the inner bottom of the U-shaped cover plate 5, and the incandescent flash lamp 14 is embedded and arranged on the side wall of the other side of the U-shaped cover plate 5;
the light display measuring mechanism 8 comprises a rear transparent sheet 81, a front transparent sheet 82 and a light reaction assembly 83, wherein the light reaction assembly 83 is positioned between the rear transparent sheet 81 and the front transparent sheet 82, the light reaction assembly 83 comprises silver bromide fillers 831, a containing ring 832 and micro square grid plates 833, each square grid hole of each micro square grid plate 833 is internally provided with the containing ring 832, the containing ring 832 is internally provided with the silver bromide fillers 831, and the front surface and the rear surface of each micro square grid plate 833 are respectively in surface sealing contact with the front transparent sheet 82 and the rear transparent sheet 81.
The size of each square hole of the micro square grid plate 833 is 2mmx2mm, and the micro square grid plate 833, the front transparent sheet 82, the rear transparent sheet 81 and the accommodating ring 832 are all made of special stealth materials; a frame 7 is arranged in the rectangular opening 6, and four walls in the frame 7 are connected with the edges of the micro square grid 833, the edges of the front transparent sheet 82 and the edges of the rear transparent sheet 81; the radar scanner 16 is electrically connected with the radar display 2 positioned on the casing 1 through a cable 4, and three electric control switches 3 are equidistantly arranged at the bottom of the surface of the casing 1; the inner wall of the U-shaped cover plate 5 is tightly contacted with the inner surface and the outer surface of the teeth through the deformation of silica gel, and a dark space is formed between the inner wall of the U-shaped cover plate 5 and the missing teeth and between the inner wall of the U-shaped cover plate and the adjacent teeth; the top surface of the raised line table 12 is provided with a clamping groove 11, and the clamping groove 11 is mutually clamped with a clamping block structure positioned at the bottom of the tooth tip top placing plate 10; the bottom of the U-shaped cover plate 5 is provided with a tooth biting groove 13, one side surface of the U-shaped cover plate 5 is provided with a lamp holder 9, and the lamp holder 9 is electrically connected with an incandescent flash lamp 14.
When the device is used, firstly, the U-shaped cover plate 5 is sleeved at a missing tooth position of a patient, the silica gel wall of the U-shaped cover plate 5 is deformed to be in close contact with teeth on two sides of the missing tooth position, the imaging measurement accuracy is easy to improve, a dark space can be formed by utilizing the missing tooth position, meanwhile, the light display measurement mechanism 8 is positioned in a region right in front of the missing tooth position, the incandescent flash lamp 14 is positioned at the rear end of the missing tooth position, the tooth tip is positioned on the raised strip table 12, at the moment, the incandescent flash lamp 14 is connected through the corresponding electric control switch 3 on the machine shell 1 to emit strong light, so that the white strong light penetrates the missing tooth position and the front transparent sheet 82 to serve as a silver bromide filler 831 reaction condition, the effect that silver bromide filler is decomposed to form silver in the accommodating ring 832 is achieved, the silver bromide filler 831 is distributed in each square hole of 2mmx2mm of the micro-square plate 833 through the accommodating ring 832, and the light-transmitting irradiation reaction region forms an image region with the shape identical to the missing tooth position;
when white strong light is irradiated in a short time, the radar scanner 16 is operated by starting the corresponding electric control switch 3, the front transparent sheet, the rear transparent sheet, the micro-square grid 833 and the containing ring 832 are all special stealth materials, the decomposed silver can be scanned, the radar display 2 is provided with a corresponding number of scanning points, meanwhile, the size of the area of the missing teeth and the width of each section are calculated according to the number of the scanning points and the size of each square hole, and the size of the missing teeth of a patient can be conveniently obtained through rapid and time-saving measurement of an stomatologist.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (5)
1. An oral cavity tooth deficiency department specification measuring equipment adopting optical imaging technology, its characterized in that: the novel digital radar system comprises a U-shaped cover plate (5), a light display measuring mechanism (8), a tooth tip top placing plate (10), an incandescent flash lamp (14), a magazine (15) and a radar scanner (16), wherein the U-shaped cover plate (5) is of a silica gel structure, a rectangular opening (6) is formed in one side plate of the U-shaped cover plate (5), the magazine (15) is arranged on an outer side port of the rectangular opening (6), the radar scanner (16) is arranged in the magazine (15), the tooth tip top placing plate (10) is clamped at the top of a raised strip table (12), the raised strip table (12) is arranged at the inner bottom of the U-shaped cover plate (5), the incandescent flash lamp (14) is embedded and arranged on the side wall of the other side of the U-shaped cover plate (5), the radar scanner (16) is electrically connected with a radar display (2) arranged on a casing (1) through a cable (4), and three electric control switches (3) are arranged at the bottom of the surface of the casing (1) at equal intervals;
the light shows measuring mechanism (8) including back transparent thin slice (81), preceding transparent thin slice (82) and photoreaction subassembly (83), photoreaction subassembly (83) are located between back transparent thin slice (81) and the preceding transparent thin slice (82), photoreaction subassembly (83) are including silver bromide filler (831), hold ring (832) and little square grid (833), all install in each square grid hole of little square grid (833) and hold ring (832), and be provided with silver bromide filler (831) in holding ring (832), little square grid (833) front and back respectively with preceding transparent thin slice (82) surface seal contact and back transparent thin slice (81) surface seal contact, every square grid hole specification size of little square grid (833) is 2mmx2mm, and little square grid (833), preceding transparent thin slice (82), back transparent thin slice (81) and hold ring (832) are special stealth material.
2. An apparatus for measuring the specification of an oral cavity tooth deficiency site by adopting an optical imaging technology as set forth in claim 1, wherein: a frame (7) is arranged in the rectangular opening (6), and four walls in the frame (7) are connected with the edges of the micro-grid plate (833), the edges of the front transparent sheet (82) and the edges of the rear transparent sheet (81).
3. An apparatus for measuring the specification of an oral cavity tooth deficiency site by adopting an optical imaging technology as set forth in claim 1, wherein: the inner wall of the U-shaped cover plate (5) is tightly contacted with the inner surface and the outer surface of the teeth through the deformation of silica gel, and a dark space is formed between the inner wall of the U-shaped cover plate (5) and the missing teeth and between the inner wall of the U-shaped cover plate and the adjacent teeth.
4. An apparatus for measuring the specification of an oral cavity tooth deficiency site by adopting an optical imaging technology as set forth in claim 1, wherein: the top surface of the raised line platform (12) is provided with a clamping groove (11), and the clamping groove (11) is mutually clamped with a clamping block structure positioned at the bottom of the tooth tip top plate (10).
5. An apparatus for measuring the specification of an oral cavity tooth deficiency site by adopting an optical imaging technology as set forth in claim 1, wherein: the bottom of the U-shaped cover plate (5) is provided with a tooth biting groove (13), a lamp holder (9) is arranged on one side surface of the U-shaped cover plate (5), and the lamp holder (9) is electrically connected with an incandescent flash lamp (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210280933.5A CN114631909B (en) | 2022-03-21 | 2022-03-21 | Oral cavity tooth-missing part specification measuring equipment adopting optical imaging technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210280933.5A CN114631909B (en) | 2022-03-21 | 2022-03-21 | Oral cavity tooth-missing part specification measuring equipment adopting optical imaging technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114631909A CN114631909A (en) | 2022-06-17 |
| CN114631909B true CN114631909B (en) | 2024-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210280933.5A Active CN114631909B (en) | 2022-03-21 | 2022-03-21 | Oral cavity tooth-missing part specification measuring equipment adopting optical imaging technology |
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| CA2314691A1 (en) * | 2000-07-28 | 2002-01-28 | Andreas Mandelis | Method and apparatus for detection of defects in teeth |
| EP1276006A1 (en) * | 2001-07-12 | 2003-01-15 | Fuji Photo Film Co., Ltd. | Image formation on heat-developable light-sensitive material and image forming apparatus |
| JP3848354B1 (en) * | 2005-08-31 | 2006-11-22 | 博史 大塚 | X-ray image processing system and method |
| CN101530349A (en) * | 2009-04-02 | 2009-09-16 | 上海交通大学 | Method for producing combination support type computer-assisted positioning and guiding die plate for oral cavity implanting |
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| CN111603258A (en) * | 2015-05-08 | 2020-09-01 | 韩国威泰有限公司 | Combined model scanning and oral cavity scanning device |
| CN112716631A (en) * | 2021-01-08 | 2021-04-30 | 四川大学 | Manufacturing method of digital small-size stacking type high-retention tooth implantation operation guide plate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7018790B2 (en) * | 2002-12-09 | 2006-03-28 | Konica Minolta Holdings, Inc. | Photothermographic imaging material and method for forming image |
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2022
- 2022-03-21 CN CN202210280933.5A patent/CN114631909B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2314691A1 (en) * | 2000-07-28 | 2002-01-28 | Andreas Mandelis | Method and apparatus for detection of defects in teeth |
| EP1276006A1 (en) * | 2001-07-12 | 2003-01-15 | Fuji Photo Film Co., Ltd. | Image formation on heat-developable light-sensitive material and image forming apparatus |
| JP3848354B1 (en) * | 2005-08-31 | 2006-11-22 | 博史 大塚 | X-ray image processing system and method |
| CN101530349A (en) * | 2009-04-02 | 2009-09-16 | 上海交通大学 | Method for producing combination support type computer-assisted positioning and guiding die plate for oral cavity implanting |
| CN111603258A (en) * | 2015-05-08 | 2020-09-01 | 韩国威泰有限公司 | Combined model scanning and oral cavity scanning device |
| CN106885809A (en) * | 2017-04-11 | 2017-06-23 | 安徽省蚌埠华益导电膜玻璃有限公司 | A kind of ITO electro-conductive glass defects detection imaging method |
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| CN112716631A (en) * | 2021-01-08 | 2021-04-30 | 四川大学 | Manufacturing method of digital small-size stacking type high-retention tooth implantation operation guide plate |
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| Publication number | Publication date |
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| CN114631909A (en) | 2022-06-17 |
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