CN112656358B - Stomatoscope for stomatology department clinical use and use method thereof - Google Patents
Stomatoscope for stomatology department clinical use and use method thereof Download PDFInfo
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- CN112656358B CN112656358B CN202110001042.7A CN202110001042A CN112656358B CN 112656358 B CN112656358 B CN 112656358B CN 202110001042 A CN202110001042 A CN 202110001042A CN 112656358 B CN112656358 B CN 112656358B
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Abstract
The invention discloses a stomatoscope for stomatology clinic and a using method thereof, belonging to the field of stomatology appliances. The utility model provides a clinical mouth mirror of using of department of stomatology, includes the mouth mirror body, still includes: the oral cavity mirror body is rotatably connected to the rotating rod; the rotating rod is rotatably connected to the holding rod; the adjusting rods are all connected to the holding rod in a sliding manner; wherein, the holding rod is rotatably connected with a lower rotating gear; an upper rotating gear; a carriage; a sliding piston groove; a sliding piston spring; the invention is convenient to control and adjust the rotation of the rotating rod by arranging the rotating ring, and is also convenient to adjust and control the rotation of the oral cavity mirror body by arranging the sliding adjusting rod and the sliding piston rod, so that the observation angle of the oral cavity mirror body can be improved, the observation result is more accurate, and when one of the oral cavity mirror body is adjusted, the other oral cavity mirror body has higher stability and better stability, thereby ensuring that the observation result is more accurate.
Description
Technical Field
The invention relates to the technical field of tools for stomatology, in particular to a stomatoscope for stomatology clinic and a using method thereof.
Background
The department of stomatology, one of the medical discipline categories, the main therapeutic conditions of the stomatology include: stomatoglosofacial dermatosis, infection of epidermis submaxillary space, lymphangioma of maxillofacial region, dentate process development deformity, malignant tumor of maxillary sinus, jaw enamel cytoma, chronic ethmoid sinusitis, mandibular retrosystole, tetracycline tooth disease, tongue leukoplakia, etc.;
before treatment, the oral cavity needs to be observed through a mouth mirror, the traditional endoscope comprises a reflecting mirror and an operating rod, and different positions in the oral cavity are observed by adjusting the angle of the operating rod; the existing adjusting operation is that the hand directly moves the position of an operating rod and a mouth mirror;
when the oral cavity of other angles is observed to needs is inside, need take out the back adjustment mouth mirror many times or adjust through rotating the hand, it is inconvenient to take out the regulation operation, and rotate the hand and then can lead to mouth mirror can paste with the inside in oral cavity mutually, and the control range is little, influence testing result.
Disclosure of Invention
The invention aims to provide a stomatoscope for clinical use in stomatology and a using method thereof, and aims to solve the problems that when the inside of an oral cavity at other angles needs to be observed, the stomatoscope needs to be taken out and then adjusted for many times or is adjusted by rotating a hand, the taking-out and adjustment operation is inconvenient, the rotation of the hand can cause the stomatoscope to be attached to the inside of the oral cavity, the adjustment range is small, and the detection result is influenced.
In order to achieve the purpose, the invention adopts the following technical scheme:
a stomatoscope for stomatology department clinical use comprises a stomatoscope body and further comprises: the oral cavity mirror body is rotatably connected to the rotating rod; the rotating rod is rotatably connected to the holding rod; two groups of adjusting rods are symmetrically arranged and are connected to the holding rod in a sliding manner; the holding rod is rotatably connected with a lower rotating gear, the adjusting rods are respectively positioned at two sides of the lower rotating gear, and the lower rotating gear is meshed with the adjusting rod gear; the upper rotating gear is fixedly connected to the stomatoscope body; the sliding frame is connected to the rotating rod in a sliding mode, and a sliding piston rod and a sliding gear plate meshed with the upper rotating gear are fixedly connected to the sliding frame; the sliding piston groove is fixedly connected to the rotating rod and is connected with the sliding piston rod in a sliding mode; the two ends of the sliding piston spring are respectively and fixedly connected to the sliding piston rod and the rotating rod; wherein, the sliding piston groove is communicated with the sliding groove of the adjusting rod on the holding rod.
Preferably, be equipped with on the holding rod with the communicating lower spread groove of sliding tray, be equipped with on the dwang with the communicating last spread groove of slip piston groove, the department of pasting mutually of dwang, holding rod is equipped with communicating ring channel, the ring channel communicates with each other with last spread groove, lower spread groove.
Preferably, the adjusting rod is fixedly connected with an adjusting spring, and one end of the adjusting spring, which is far away from the adjusting rod, is fixedly connected to the holding rod.
Preferably, it is connected with the swivel becket to rotate on the dwang, sliding connection has the pulling stopper on the dwang, be equipped with on the holding rod with pulling stopper assorted spacing groove, the swivel becket passes through the stay cord with the pulling stopper and links to each other, the one end fixedly connected with pulling limiting spring of pulling stopper, the one end fixed connection that the pulling stopper was kept away from to the pulling limiting spring is on the dwang.
Preferably, the rotating ring is fixedly connected with a pulling elastic rope, and one end of the pulling elastic rope, which is far away from the rotating ring, is fixedly connected to the rotating rod.
Preferably, be equipped with on the dwang and separate the groove, it has and separates the piece to separate inslot sliding connection, separate piece and last spread groove phase-match, separate the groove and stimulate the stopper phase-match.
Preferably, fixedly connected with gear connection board on the lower driving gear, be equipped with the gear piston groove on the gear connection board, the in-connection has the gear piston board in the gear piston inslot, sliding connection has the pressure strip on the holding rod, pressure strip and swivel becket phase-match, be equipped with on the holding rod with the communicating annular in gear piston groove, pressure strip and annular phase-match.
Preferably, the gear piston plate is fixedly connected with a gear elastic rope, and one end of the gear elastic rope, far away from the gear piston plate, is fixedly connected to the gear connecting plate.
Preferably, a lighting lamp is arranged on the stomatoscope body.
A use method of a stomatoscope for stomatology clinic mainly comprises the following steps:
s1, holding the holding rod, and placing the stomatoscope body in an oral cavity for observation;
s2, rotating the rotating rod to adjust the relative angles among the oral endoscope body, the rotating rod and the holding rod;
and S3, pressing the two adjusting rods to adjust the relative angle between the stomatoscope body and the rotating rod.
Compared with the prior art, the invention provides a stomatoscope for stomatology clinic and a using method thereof, and the stomatoscope has the following beneficial effects:
the device is provided with a rotating ring which is convenient to control and adjust the rotation of the rotating rod, and is provided with a sliding adjusting rod and a sliding piston rod which are convenient to adjust and control the rotation of the oral cavity mirror body, so that the observation angle of the oral cavity mirror body can be improved, the observation result is more accurate, and when one of the oral cavity mirror body is adjusted, the other oral cavity mirror body is higher in stability and better in stability, and the observation result is more accurate.
Drawings
FIG. 1 is a schematic structural view of a stomatoscope for stomatology department clinical use and a use method thereof provided by the invention;
FIG. 2 is a schematic structural view of part A in FIG. 1 of a stomatoscope for stomatology department clinical use and a using method thereof according to the present invention;
FIG. 3 is a schematic structural view of part B in FIG. 1 of a stomatoscope for stomatology department and a using method thereof according to the present invention;
FIG. 4 is a schematic structural view of a part C in FIG. 1 of a stomatoscope for clinical use in stomatology and a use method thereof according to the present invention;
FIG. 5 is a schematic structural view of a rotary ring of the stomatoscope for stomatology department and the use method thereof according to the present invention;
FIG. 6 is a schematic structural view of a holding rod of the stomatoscope for clinical use in stomatology and the use method thereof according to the present invention;
FIG. 7 is a schematic structural view of a ring-shaped slot of a stomatoscope for stomatology department clinical use and a use method thereof according to the present invention;
fig. 8 is a schematic structural view of a gear connecting plate of the stomatoscope for clinical use in stomatology and the use method thereof.
In the figure: 1. a holding rod; 101. adjusting a rod; 102. adjusting the spring; 2. rotating the rod; 201. a blocking groove; 202. an annular groove; 203. a blocking block; 3. an oral mirror body; 3001. an illuminating lamp; 301. an upper rotating gear; 302. a sliding gear plate; 303. a carriage; 304. a sliding piston rod; 305. a sliding piston groove; 306. a sliding piston spring; 4. a rotating ring; 4001. pulling the elastic rope; 401. pulling a rope; 402. pulling the limiting block; 403. pulling the limiting spring; 5. a lower rotating gear; 501. a gear connecting plate; 502. a gear piston plate; 5021. a gear piston groove; 503. a gear elastic cord; 504. a ring groove; 505. a compression plate; 6. an upper connecting groove; 601. and a lower connecting groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example (b):
referring to fig. 1-8, a stomatoscope for stomatology department clinical use comprises a stomatoscope body 3, and further comprises: the rotating rod 2 and the stomatoscope body 3 are rotatably connected to the rotating rod 2; the rotating rod 2 is rotatably connected to the holding rod 1; two groups of adjusting rods 101 are symmetrically arranged and are connected to the holding rod 1 in a sliding manner; wherein, the holding rod 1 is rotatably connected with a lower rotating gear 5, the adjusting rods 101 are respectively positioned at two sides of the lower rotating gear 5, and the lower rotating gear 5 is in gear engagement with the adjusting rods 101; the upper rotating gear 301 is fixedly connected to the stomatoscope body 3; a sliding frame 303 slidably connected to the rotating rod 2, wherein a sliding piston rod 304 and a sliding gear plate 302 engaged with the upper rotating gear 301 are fixedly connected to the sliding frame 303; a sliding piston groove 305 fixedly connected to the rotating rod 2 and slidably connected to the sliding piston rod 304; a sliding piston spring 306, both ends of which are respectively fixedly connected to the sliding piston rod 304 and the rotating rod 2; wherein the sliding piston groove 305 is communicated with the sliding groove of the adjusting rod 101 on the holding rod 1.
When the device is used, the inside of the oral cavity of a patient can be observed and detected through the stomatoscope body 3;
in order to better observe the oral cavity of a patient, the adjusting rod 101 can be pressed, so that the adjusting rod 101 extrudes gas in the holding rod 1, the adjusting spring 102 compresses, the gas in the holding rod 1 enters the sliding piston groove 305, the sliding piston rod 304 in the sliding piston groove 305 slides, the sliding frame 303 and the sliding gear plate 302 are driven to slide, the oral cavity mirror body 3 rotates under the action of the gear rack, and the angle of the oral cavity mirror body 3 on the rotating rod 2 is further realized, so that an operator can observe the oral cavity;
furthermore, a lower rotating gear 5 is also arranged, so that the sliding directions of the two adjusting rods 101 are opposite, the two sliding piston rods 304 slide in the same direction, and the sliding effect is better;
the holding rod 1 is provided with a lower connecting groove 601 communicated with the sliding groove, the rotating rod 2 is provided with an upper connecting groove 6 communicated with the sliding piston groove 305, the joint of the rotating rod 2 and the holding rod 1 is provided with a communicated annular groove 202, and the annular groove 202 is communicated with the upper connecting groove 6 and the lower connecting groove 601.
It should be understood that the gas in the holding rod 1 will firstly enter the lower connecting groove 601, then enter the upper connecting groove 6 under the action of the annular groove 202, and then enter the sliding piston groove 305 conveniently, and meanwhile due to the arrangement of the two annular grooves 202, when the relative rotation occurs between the rotating rod 2 and the holding rod 1, the stability of the communication between the upper connecting groove 6 and the lower connecting groove 601 will not be affected;
an adjusting spring 102 is fixedly connected to the adjusting rod 101, and one end of the adjusting spring 102, which is far away from the adjusting rod 101, is fixedly connected to the holding rod 1.
The reset of the adjusting rod 101 is facilitated through the arranged adjusting spring 102;
rotating on dwang 2 and being connected with swivel becket 4, sliding connection has pulling stopper 402 on dwang 2, is equipped with on the holding rod 1 and stimulates stopper 402 assorted spacing groove, and swivel becket 4 links to each other through stay cord 401 with pulling stopper 402, and the one end fixedly connected with of pulling stopper 402 stimulates spacing spring 403, and the one end fixed connection that pulls spacing spring 403 kept away from and stimulates stopper 402 is on dwang 2.
Meanwhile, the rotating ring 4 can be rotated, the elasticity of the elastic rope 4001 is pulled to be increased, and when the rotating ring 4 rotates, the pull limiting block 402 can be pulled to slide through the pull rope 401, so that the pull limiting block 402 is separated from the limiting groove on the holding rod 1, and the rotating rod 2 can be rotated, namely, the side edge of the rotating ring 4 is attached to the rotating rod 2, the rotating rod 2 can be driven to rotate to adjust the relative displacement between the rotating rod 2 and the holding rod 1, and the observation angle of the stomatoscope body 3 can be adjusted conveniently;
the rotating ring 4 is fixedly connected with a pulling elastic rope 4001, and one end of the pulling elastic rope 4001 far away from the rotating ring 4 is fixedly connected to the rotating rod 2.
When the rotating ring 4 is not driven to rotate, the pulling elastic rope 4001 can drive the rotating ring 4 to reset, and the pulling limiting spring 403 can drive the pulling limiting block 402 to reset.
The rotating rod 2 is provided with a partition groove 201, a partition block 203 is slidably connected in the partition groove 201, the partition block 203 is matched with the upper connecting groove 6, and the partition groove 201 is matched with the pulling limiting block 402.
Furthermore, the stopper 402 is pulled to drive the gas in the rotating rod 2 to enter the partition groove 201, so that the partition block 203 blocks the upper connecting groove 6 in a sliding manner, the connection between the adjusting rod 101 and the sliding piston rod 304 is interrupted, the stomatoscope body 3 is prevented from rotating on the rotating rod 2 when the rotating rod 2 is adjusted to rotate, and the stability of the stomatoscope body 3 is improved;
the lower rotating gear 5 is fixedly connected with a gear connecting plate 501, a gear piston groove 5021 is formed in the gear connecting plate 501, a gear piston plate 502 is connected in the gear piston groove 5021 in a sliding mode, a pressing plate 505 is connected on the holding rod 1 in a sliding mode, the pressing plate 505 is matched with the rotating ring 4, a ring groove 504 communicated with the gear piston groove 5021 is formed in the holding rod 1, and the pressing plate 505 is matched with the ring groove 504.
Can drive gear connecting plate 501 when running gear 5 rotates down and rotate, and then under the effect of centrifugal force this moment, can drive gear piston plate 502 and slide in gear piston groove 5021, make the gas in gear piston groove 5021 enter into annular 504 in, slide with promoting pressure strip 505, make pressure strip 505 can paste with swivel becket 4, in order to improve when adjusting the rotation of the oral cavity mirror body 3, improve the stability of swivel becket 4, and then in order to improve the precision of adjusting.
A gear elastic rope 503 is fixedly connected to the gear piston plate 502, and one end of the gear elastic rope 503, which is far away from the gear piston plate 502, is fixedly connected to the gear connecting plate 501.
Through the arranged gear elastic rope 503, the pressing plate 505 and the gear piston plate 502 can be reset when the gear connecting plate 501 does not rotate;
the illuminating lamp 3001 is arranged on the mouth mirror body 3, so that the illumination degree of observation can be improved, and the observation accuracy is improved.
Example 2:
referring to fig. 1-8, a method for using a stomatoscope for clinical use in stomatology mainly comprises the following steps:
s1, holding the holding rod 1, and placing the stomatoscope body 3 in the oral cavity for observation;
when the device is used, the inside of the oral cavity of a patient can be observed and detected through the stomatoscope body 3, when the holding rod 1 is held, the holding rod 1 is held by a single hand, the thumb and the forefinger are held by the rotating ring 4, and the middle finger is used for pressing the adjusting rod 101;
s2, rotating the rotating rod 2 to adjust the relative angles among the stomatoscope body 3, the rotating rod 2 and the holding rod 1;
the rotating ring 4 can be rotated, the elasticity of the elastic rope 4001 is increased at the moment, and when the rotating ring 4 rotates, the pull rope 401 can be used for pulling the limiting block 402 to slide, so that the limiting block 402 is separated from the limiting groove on the holding rod 1, and the rotating rod 2 can be rotated at the moment, namely, the side edge of the rotating ring 4 is attached to the rotating rod 2 at the moment, so that the rotating rod 2 can be driven to rotate to adjust the relative displacement between the rotating rod 2 and the holding rod 1, and the observation angle of the stomatoscope body 3 can be adjusted conveniently;
when the rotating ring 4 is not driven to rotate, the rotating ring 4 can be driven to reset by pulling the elastic rope 4001, and the pulling limiting block 402 can be driven to reset by pulling the limiting spring 403;
the limiting block 402 is pulled to drive the gas in the rotating rod 2 to enter the partition groove 201, so that the partition block 203 slides to block the upper connecting groove 6, the connection between the adjusting rod 101 and the sliding piston rod 304 is interrupted, the stomatoscope body 3 is prevented from rotating on the rotating rod 2 when the rotating rod 2 is adjusted to rotate, and the stability of the stomatoscope body 3 is improved;
s3, pressing the two adjusting rods 101 to adjust the relative angle between the stomatoscope body 3 and the rotating rod 2;
in order to better observe the oral cavity of a patient, the adjusting rod 101 can be pressed, so that the adjusting rod 101 extrudes gas in the holding rod 1, the adjusting spring 102 compresses, the gas in the holding rod 1 enters the sliding piston groove 305, the sliding piston rod 304 in the sliding piston groove 305 slides, the sliding frame 303 and the sliding gear plate 302 are driven to slide, the oral cavity mirror body 3 rotates under the action of the gear rack, and the angle of the oral cavity mirror body 3 on the rotating rod 2 is further realized, so that an operator can observe the oral cavity;
furthermore, a lower rotating gear 5 is also arranged, so that the sliding directions of the two adjusting rods 101 are opposite, the two sliding piston rods 304 slide in the same direction, and the sliding effect is better;
the gas in the holding rod 1 firstly enters the lower connecting groove 601, then enters the upper connecting groove 6 under the action of the annular grooves 202, and further enters the sliding piston groove 305 conveniently, and meanwhile, due to the arrangement of the two annular grooves 202, when the rotating rod 2 and the holding rod 1 rotate relatively, the communication stability between the upper connecting groove 6 and the lower connecting groove 601 is not influenced;
according to the invention, the rotating ring 4 is arranged to facilitate the control and adjustment of the rotation of the rotating rod 2, and the sliding adjusting rod 101 and the sliding piston rod 304 are arranged to facilitate the control of the adjustment of the rotation of the stomatoscope body 3, so that the observation angle of the stomatoscope body 3 can be improved, the observation result is more accurate, and when one of the stomatoscope bodies is adjusted, the other stomatoscope body has higher stability and better stability, thereby enabling the observation result to be more accurate.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (8)
1. The utility model provides a clinical mouth mirror that uses of department of stomatology, includes the stomatoscope body (3), its characterized in that still includes:
the mouth mirror body (3) is rotatably connected to the rotating rod (2);
the rotating rod (2) is rotatably connected to the holding rod (1);
two groups of adjusting rods (101) are symmetrically arranged and are connected to the holding rod (1) in a sliding manner;
the upper rotating gear (5) is connected to the holding rod (1) in a rotating mode, the adjusting rods (101) are located on two sides of the lower rotating gear (5) respectively, and the lower rotating gear (5) is in gear meshing with the adjusting rods (101);
the upper rotating gear (301) is fixedly connected to the stomatoscope body (3);
the sliding frame (303) is connected to the rotating rod (2) in a sliding mode, a sliding piston rod (304) and a sliding gear plate (302) meshed with the upper rotating gear (301) are fixedly connected to the sliding frame (303);
the sliding piston groove (305) is fixedly connected to the rotating rod (2) and is connected with the sliding piston rod (304) in a sliding mode;
the two ends of the sliding piston spring (306) are respectively and fixedly connected to the sliding piston rod (304) and the rotating rod (2);
wherein, the sliding piston groove (305) is communicated with the sliding groove of the adjusting rod (101) on the holding rod (1);
a lower connecting groove (601) communicated with the sliding groove is formed in the holding rod (1), an upper connecting groove (6) communicated with the sliding piston groove (305) is formed in the rotating rod (2), a communicated annular groove (202) is formed in the position where the rotating rod (2) and the holding rod (1) are attached to each other, and the annular groove (202) is communicated with the upper connecting groove (6) and the lower connecting groove (601);
dwang (2) go up to rotate and be connected with swivel becket (4), sliding connection has pulling stopper (402) on dwang (2), be equipped with on holding pole (1) and stimulate stopper (402) assorted spacing groove, swivel becket (4) link to each other through stay cord (401) with pulling stopper (402), the one end fixedly connected with of pulling stopper (402) stimulates spacing spring (403), the one end fixed connection that pulling stopper (402) was kept away from in pulling spacing spring (403) is on dwang (2).
2. The stomatoscope for clinical use in department of stomatology according to claim 1, characterized in that the adjusting rod (101) is fixedly connected with an adjusting spring (102), and one end of the adjusting spring (102) far away from the adjusting rod (101) is fixedly connected with the holding rod (1).
3. The stomatoscope for clinical use in stomatology department according to claim 1, characterized in that the rotating ring (4) is fixedly connected with a pulling elastic rope (4001), and one end of the pulling elastic rope (4001) far away from the rotating ring (4) is fixedly connected to the rotating rod (2).
4. The stomatoscope for stomatology department clinical use according to claim 1, wherein a partition groove (201) is formed in the rotating rod (2), a partition block (203) is connected in the partition groove (201) in a sliding mode, the partition block (203) is matched with the upper connecting groove (6), and the partition groove (201) is matched with the pulling limiting block (402).
5. The stomatoscope used in department of stomatology clinics and clinical practice is characterized in that a gear connecting plate (501) is fixedly connected to the lower rotating gear (5), a gear piston groove (5021) is formed in the gear connecting plate (501), a gear piston plate (502) is connected in the gear piston groove (5021) in the sliding mode, a pressing plate (505) is connected to the holding rod (1) in the sliding mode, the pressing plate (505) is matched with the rotating ring (4), a ring groove (504) communicated with the gear piston groove (5021) is formed in the holding rod (1), and the pressing plate (505) is matched with the ring groove (504).
6. The stomatoscope for clinical use in stomatology department according to claim 5, characterized in that the gear piston plate (502) is fixedly connected with a gear elastic rope (503), and one end of the gear elastic rope (503) far away from the gear piston plate (502) is fixedly connected to the gear connecting plate (501).
7. The stomatoscope for clinical use in department of stomatology according to claim 1, characterized in that the stomatoscope body (3) is provided with a lighting lamp (3001).
8. A method of using the stomatoscope for oral clinical use according to any of claims 1 to 7, characterized in that it essentially comprises the following steps:
s1, holding the holding rod (1), and placing the stomatoscope body (3) in an oral cavity for observation;
s2, rotating the rotating rod (2) to adjust the relative angles among the stomatoscope body (3), the rotating rod (2) and the holding rod (1);
s3, pressing the two adjusting rods (101) to adjust the relative angle between the stomatoscope body (3) and the rotating rod (2).
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3001155B2 (en) * | 1998-03-04 | 2000-01-24 | 株式会社長田中央研究所 | Dental mirror device |
| US20100279249A1 (en) * | 2009-05-04 | 2010-11-04 | Lin Yan-Zhang | Dental oral mirror |
| WO2013069008A1 (en) * | 2011-11-11 | 2013-05-16 | Vizel Orit | Universally adjustable intra oral scope for self visualization of the oral cavity |
| CN209186652U (en) * | 2018-10-16 | 2019-08-02 | 湖北中医药高等专科学校 | A kind of dentistry mouth mirror |
| US11116484B2 (en) * | 2018-10-31 | 2021-09-14 | Hongming Zhu | Lens assembly for 3D electronic nasopharyngoscope |
| CN110575124A (en) * | 2019-09-25 | 2019-12-17 | 王珂 | multi-angle mouth mirror of medical department of stomatology |
| CN211749507U (en) * | 2020-01-06 | 2020-10-27 | 董煜 | Clinical novel mouth mirror of using of department of stomatology |
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