CN111603262B - Special protector of clinical tooth body in oral cavity prepares - Google Patents
Special protector of clinical tooth body in oral cavity prepares Download PDFInfo
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- CN111603262B CN111603262B CN202010486195.0A CN202010486195A CN111603262B CN 111603262 B CN111603262 B CN 111603262B CN 202010486195 A CN202010486195 A CN 202010486195A CN 111603262 B CN111603262 B CN 111603262B
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- shell
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- 210000000214 mouth Anatomy 0.000 title claims abstract description 13
- 230000001012 protector Effects 0.000 title claims abstract description 5
- 239000000872 buffer Substances 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 claims description 11
- 239000002775 capsule Substances 0.000 claims description 8
- 230000003139 buffering effect Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 9
- 210000003254 palate Anatomy 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 239000006173 Good's buffer Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/06—Implements for therapeutic treatment
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- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The invention discloses a special protection device for oral clinical tooth preparation, which comprises a handle, wherein one end of the handle is fixedly connected with a lower support body through a connecting rod, an upper support body for supporting a tongue is arranged above the lower support body, a support shell is fixedly sleeved in the lower support body, symmetrically arranged vertical frames are fixedly arranged on the inner wall of the bottom of the support shell, a motor is fixedly arranged on the inner wall of the bottom of the support shell positioned on the inner side of the vertical frame, the output end of the motor is fixedly connected with a rotating shaft, and the top end of the rotating shaft is rotatably arranged on the inner wall of the top of the support shell. This clinical tooth of oral cavity prepares special protector, the lifting surface area that can make the tongue is big, can be better to the effect that the tongue supported, and the location is more firm, has solved among the prior art because be difficult to carry out the trouble that the support location that stabilizes and bring to can support the in-process to the tongue and play good buffering effect, with the damage that reduces tongue and palate.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a special protection device for oral clinical tooth preparation.
Background
In the department of stomatology, the in-process that various tooth body were prepared is carried out in patient's mouth to oral cavity clinician, and the condition that the car needle that often cuts the tooth body accidentally injured patient's tongue, cheek tissue takes place, leads to the increase of various infection chances after the tissue is impaired again, and these all can cause unnecessary damage and misery for the patient, consequently, patent CN107440809A discloses a special protective device is prepared to oral cavity clinical tooth body, including first mount, the tip of first mount is connected with the link through rotary mechanism, and the top of link is fixed with the second mount, connect through angle adjusting device between second mount and the first mount to prop open the oral cavity, for the operation provides the space area, reduced medical staff's working strength, provide convenience for medical staff's work.
And in the in-service use in-process, because break down easily through single support, be difficult to carry out firm support to the tongue, be difficult to satisfy the needs that support patient's tongue, bring inconvenience for the use, the tongue supports the in-process moreover and does not have the cushioning effect, also causes the damage of tongue and palate easily like this in the process of supporting the protection to the tongue. Therefore, the special protection device for the dental preparation in the oral clinical is provided.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a special protection device for the preparation of an oral clinical tooth body.
The invention provides a special protection device for dental clinical tooth preparation, which comprises a handle, wherein one end of the handle is fixedly connected with a lower support body through a connecting rod, an upper support body for supporting a tongue is arranged above the lower support body, a support shell is fixedly sleeved inside the lower support body, symmetrically arranged vertical frames are fixedly arranged on the inner wall of the bottom of the support shell, a motor is fixedly arranged on the inner wall of the bottom of the support shell positioned at the inner side of the vertical frame, the output end of the motor is fixedly connected with a rotating shaft, the top end of the rotating shaft is rotatably arranged on the inner wall of the top of the support shell, a first conical gear is fixedly sleeved on the rotating shaft, two sides of the first conical gear are respectively in transmission meshing with a second conical gear, two second conical gears are respectively fixedly sleeved with rotating rods, and the ends of the two rotating rods, which are far away from each other, are respectively rotatably arranged on the inner walls of two sides of the support shell, the rotating rod positioned outside the vertical frame is fixedly sleeved with a sleeve type worm, the bottom of the upper support body is fixedly connected with an arched supporting plate, the bottom of the arched supporting plate is fixedly connected with symmetrically arranged threaded sleeves, the two threaded sleeves are respectively connected with a screw rod through threads, the bottoms of the two screw rods are rotatably extended into the supporting shell and are respectively fixedly sleeved with a worm wheel, and the sleeve type worm is meshed with the worm wheel;
the material of lower supporter and last supporter is medical rubber material, the inside of going up the supporter is equipped with the cushion chamber, the inside fixed a plurality of first buffering bag balls that are equipped with of cushion chamber.
Preferably, go up the support and the whole domes that is of cushion chamber, a plurality of first buffering bag balls equidistance interval arrange the setting in the cushion chamber, and the top and the bottom of first buffering bag ball are fixed connection respectively on the top inner wall and the bottom inner wall of cushion chamber.
Preferably, the lower support bodies positioned at two sides of the support shell are respectively provided with a cavity, and a second buffer capsule ball is sleeved in the cavity.
Preferably, the screw rod positioned above the lower support body is provided with an external thread, the inner wall of the threaded sleeve is provided with an internal thread, and the external thread on the screw rod is in threaded connection with the internal thread on the inner wall of the threaded sleeve.
Preferably, the inner wall of the top of the supporting shell is fixedly sleeved with a first bearing, and the screw rod is rotatably mounted on the first bearing.
Preferably, the vertical frame is provided with a sleeve hole, the sleeve hole is fixedly sleeved with the second bearing, and the rotating rod is rotatably arranged on the second bearing.
Preferably, the inner walls of the two sides of the supporting shell are respectively and fixedly provided with a first rotating seat, and the ends of the two rotating rods, which are far away from each other, are respectively and rotatably installed on the two first rotating seats; and a second rotating seat is fixedly installed on the inner wall of the top of the supporting shell, and the top of the rotating shaft is rotatably installed on the second rotating seat.
Preferably, a plurality of anti-skidding convex points are arranged on the top surface of the upper support body and are uniformly distributed.
Preferably, the one end that the connecting rod was kept away from to the handle is equipped with the battery mounting groove, is provided with the battery in the battery mounting groove, the top one end that the handle is close to the connecting rod is provided with the controller, the output of battery and the input electric connection of controller, the output of controller and the input electric connection of motor.
The invention has the beneficial effects that:
according to the invention, the motor is utilized to drive the rotating shaft to rotate so as to drive the first conical gear to rotate, the first conical gear is meshed with the second conical gear in a transmission fit manner so as to drive the rotating rod to rotate, the rotating rod drives the sleeve type worm to rotate, the sleeve type worm is in transmission fit with the worm wheel when rotating, and further drives the screw rod to rotate, so that the screw thread on the screw rod and the internal thread on the inner wall of the screw sleeve are in screw thread transmission, the screw sleeve can be driven to be in upward screw thread transmission along the screw rod, the arch support plate and the upper support body are driven to integrally move upwards when moving upwards, so that a tongue can be supported and is contacted with a palate and positioned relatively, and the two-way support arch support plate and the upper support body of the two screw sleeves are used, the stress area of the tongue is large, the tongue can be supported better in effect, and the positioning is more stable;
in the invention, the anti-skid convex points are arranged on the top surface of the upper support body, so that the anti-skid function can be realized, and the lower support body and the upper support body are made of medical rubber materials, so that when the upper support body upwards supports the tongue, the upper support body can compress and buffer the first buffer capsule ball in the buffer cavity, and a good buffer effect can be realized in the tongue supporting process, so that the damage to the tongue and the palate is reduced;
in conclusion, the special protection device for the clinical tooth preparation in the oral cavity can enable the stress area of the tongue to be large, can support the tongue better, can fix the tongue more stably, solves the problem that the tongue is difficult to be supported and fixed stably in the prior art, and can play a good buffering effect in the tongue supporting process so as to reduce the damage to the tongue and the palate.
Drawings
FIG. 1 is a schematic view of a protective device specially used for dental preparation in oral clinical practice according to the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a front cross-sectional structural schematic view of the present invention;
FIG. 4 is a schematic structural view of a rotating rod and a sleeve-type worm in the present invention;
FIG. 5 is a schematic structural view of the screw rod and the threaded sleeve of the present invention;
fig. 6 is a schematic structural view of the support case of the present invention.
In the figure: the device comprises a lower support body 1, a second buffer capsule ball 101, an upper support body 2, a buffer cavity 200, a first buffer capsule ball 201, a handle 3, a connecting rod 4, a support shell 5, a vertical frame 6, a motor 7, a rotating shaft 8, a first conical gear 9, a second conical gear 10, a rotating rod 11, a sleeve type worm 12, a worm wheel 13, a screw rod 14, an external thread 15, a threaded sleeve 16, an arched support plate 17, a first rotating seat 18, a second bearing 19, a first bearing 20, a battery 21 and a controller 22.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Examples
Referring to fig. 1-6, the embodiment provides a special protection device for oral cavity clinical tooth preparation, which comprises a handle 3, one end of the handle 3 is fixedly connected with a lower support 1 through a connecting rod 4, an upper support 2 for supporting the tongue is arranged above the lower support 1, the lower support 1 is fixedly sleeved with a support shell 5, the inner wall of the bottom of the support shell 5 is fixedly provided with symmetrically arranged vertical frames 6, the inner wall of the bottom of the support shell 5 positioned at the inner side of the vertical frame 6 is fixedly provided with a motor 7, the output end of the motor 7 is fixedly connected with a rotating shaft 8, the top end of the rotating shaft 8 is rotatably installed on the inner wall of the top of the support shell 5, the rotating shaft 8 is fixedly sleeved with a first conical gear 9, the two sides of the first conical gear 9 are respectively engaged with second conical gears 10 in a transmission manner, two second conical gears 10 are respectively fixedly sleeved with rotating rods 11, one ends of the two rotating rods 11, which are far away from each other, are rotatably mounted on the inner walls of the two sides of the supporting shell 5 respectively, sleeve-shaped worms 12 are fixedly sleeved on the rotating rods 11 positioned outside the stand 6, an arch-shaped supporting plate 17 is fixedly connected to the bottom of the upper supporter 2, symmetrically-arranged threaded sleeves 16 are fixedly connected to the bottom of the arch-shaped supporting plate 17, screw rods 14 are respectively connected to the two threaded sleeves 16 through threads, the bottoms of the two screw rods 14 are rotatably extended into the supporting shell 5 and fixedly sleeved with worm wheels 13 respectively, and the sleeve-shaped worms 12 are meshed with the worm wheels 13;
the material of lower supporter 1 and last supporter 2 is medical rubber material, the inside of going up supporter 2 is equipped with cushion chamber 200, the inside fixed a plurality of first buffering sacculus 201 that are equipped with of cushion chamber 200. This clinical tooth of oral cavity prepares special protector, the lifting surface area that can make the tongue is big, can be better to the effect that the tongue supported, and the location is more firm, has solved among the prior art because be difficult to carry out the trouble that the support location that stabilizes and bring to can support the in-process to the tongue and play good buffering effect, with the damage that reduces tongue and palate.
In this example, the upper supporter 2 and the buffer cavity 200 are integrally of an arch structure, the plurality of first buffer bladder balls 201 are arranged in the buffer cavity 200 at equal intervals, and the top and the bottom of the first buffer bladder balls 201 are respectively and fixedly connected to the top inner wall and the bottom inner wall of the buffer cavity 200.
In this example, the lower supporting body 1 located at both sides of the supporting shell 5 is respectively provided with a cavity, and a second buffer bag ball 101 is sleeved in the cavity.
In this example, the screw rod 14 located above the lower supporter 1 is provided with an external thread 15, an internal thread is provided on the inner wall of the threaded sleeve 16, and the external thread 15 on the screw rod 14 is threadedly coupled with the internal thread on the inner wall of the threaded sleeve 16.
In this example, a first bearing 20 is fixedly sleeved on the top inner wall of the supporting shell 5, and the screw 14 is rotatably mounted on the first bearing 20.
In this example, the stand 6 is provided with a sleeve hole, the sleeve hole is fixedly sleeved with the second bearing 19, and the rotating rod 11 is rotatably mounted on the second bearing 19.
In this example, the inner walls of the two sides of the supporting shell 5 are respectively and fixedly provided with a first rotating seat 18, and the ends of the two rotating rods 11 away from each other are respectively and rotatably mounted on the two first rotating seats 18; and a second rotating seat is fixedly installed on the inner wall of the top of the supporting shell 5, and the top of the rotating shaft 8 is rotatably installed on the second rotating seat.
In this example, a plurality of anti-slip bumps are arranged on the top surface of the upper support body 2, and the plurality of anti-slip bumps are uniformly arranged.
In this example, the one end that connecting rod 4 was kept away from to handle 3 is equipped with the battery mounting groove, is provided with battery 21 in the battery mounting groove, handle 3 is close to the top one end of connecting rod 4 and is provided with controller 22, and battery 21's output and controller 22's input electric connection, controller 22's output and motor 7's input electric connection.
In the embodiment, when the medical support is used, a doctor places the lower support 1 on the bottom surface of the inner side of teeth below the tongue through the handle 3, the tongue is placed on the top of the upper support 2, the motor 7 is used for working to drive the rotating shaft 8 to rotate, the rotating shaft 8 drives the first conical gear 9 to rotate when rotating, the first conical gear 9 drives the rotating rod 11 to rotate through the meshing transmission fit with the second conical gear 10 when rotating, the rotating rod 11 drives the sleeve-shaped worm 12 to rotate, the sleeve-shaped worm 12 drives the worm wheel 13 to be in transmission fit when rotating, and further drives the screw rod 14 to rotate on the first bearing 20, so that the external thread 15 on the screw rod 14 and the internal thread on the inner wall of the screw sleeve 16 are in thread transmission, the screw sleeve 16 can be in upward thread transmission along the screw rod 14, and the arch support plate 17 and the upper support 2 are driven to move upward integrally when the screw sleeve 16 moves upward, therefore, the tongue can be supported and contacted with the upper palate and positioned relatively, and the stressed area of the tongue is large through the two-way support arch-shaped support plates 17 of the two threaded sleeves and the upper support body 2, so that the tongue can be supported better and positioned more stably; and through setting up anti-skidding bump at the top surface of last supporter 2, can play skid-proof effect to because lower supporter 1 and last supporter 2 are medical rubber material, can compress the buffering through last supporter 2 compression first buffering sacculus 201 in the cushion chamber 200 when last supporter 2 upwards supports the tongue, thereby can support the in-process to the tongue and play good buffering effect, with the reduction to the damage of tongue and palate.
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 to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The utility model provides a clinical tooth body in oral cavity prepares special protector, a serial communication port, includes handle (3), connecting rod (4) fixedly connected with lower supporter (1) is passed through to the one end of handle (3), the top of supporter (1) is equipped with and is used for carrying out last supporter (2) that supports to the tongue down, the inside fixed of supporter (1) has cup jointed support shell (5) down, fixed mounting has stand (6) that the symmetry set up on the bottom inner wall of support shell (5), and fixed mounting has motor (7) on the bottom inner wall of the inboard support shell (5) of stand (6), the output fixedly connected with pivot (8) of motor (7), the top of pivot (8) rotate and install on the top inner wall of support shell (5), the fixed cover has been connected with first conical gear (9) on pivot (8), and the both sides of first conical gear (9) are the transmission meshing respectively have second conical gear (10), the two second bevel gears (10) are respectively and fixedly sleeved with a rotating rod (11), one ends, far away from each other, of the two rotating rods (11) are respectively and rotatably installed on the inner walls of the two sides of the supporting shell (5), sleeve-type worms (12) are fixedly sleeved on the rotating rods (11) positioned on the outer side of the stand (6), the bottom of the upper support body (2) is fixedly connected with an arch supporting plate (17), the bottom of the arch supporting plate (17) is fixedly connected with symmetrically-arranged threaded sleeves (16), the two threaded sleeves (16) are respectively and internally connected with screw rods (14) through threads, the bottoms of the two screw rods (14) are respectively and rotatably extended into the supporting shell (5) and are respectively and fixedly sleeved with worm wheels (13), and the sleeve-type worms (12) are meshed with the worm wheels (13);
the lower support body (1) and the upper support body (2) are both made of medical rubber, a buffer cavity (200) is arranged inside the upper support body (2), and a plurality of first buffer capsule balls (201) are fixedly arranged inside the buffer cavity (200); the upper support body (2) and the buffer cavity (200) are integrally of an arch structure, a plurality of first buffer capsule balls (201) are arranged in the buffer cavity (200) at equal intervals, and the top and the bottom of each first buffer capsule ball (201) are fixedly connected to the inner wall of the top and the inner wall of the bottom of the buffer cavity (200) respectively; cavities are respectively arranged on the lower supporting bodies (1) positioned at the two sides of the supporting shell (5), and second buffer capsule balls (101) are sleeved in the cavities.
2. The special protection device for the preparation of the clinical tooth in the oral cavity according to claim 1, wherein the screw rod (14) above the lower support body (1) is provided with an external thread (15), the inner wall of the threaded sleeve (16) is provided with an internal thread, and the external thread (15) on the screw rod (14) is in threaded connection with the internal thread on the inner wall of the threaded sleeve (16).
3. The special protection device for the oral clinical tooth preparation according to claim 1, wherein the top inner wall of the supporting shell (5) is fixedly sleeved with a first bearing (20), and the spiral rod (14) is rotatably mounted on the first bearing (20).
4. The special protection device for the preparation of the clinical dental body in the oral cavity according to claim 1, wherein the stand (6) is provided with a sleeve hole, the sleeve hole is fixedly sleeved with the second bearing (19), and the rotating rod (11) is rotatably mounted on the second bearing (19).
5. The special protection device for the preparation of the oral clinical tooth body according to claim 1, wherein the inner walls of the two sides of the supporting shell (5) are respectively and fixedly provided with a first rotating seat (18), and the ends of the two rotating rods (11) far away from each other are respectively and rotatably mounted on the two first rotating seats (18); the top inner wall of the supporting shell (5) is fixedly provided with a second rotating seat, and the top of the rotating shaft (8) is rotatably arranged on the second rotating seat.
6. The special protection device for the oral clinical tooth preparation according to claim 1, wherein a plurality of anti-skid salient points are arranged on the top surface of the upper support body (2), and are uniformly arranged.
7. The special protection device for oral clinical tooth preparation according to claim 1, wherein a battery mounting groove is formed in one end of the handle (3) far away from the connecting rod (4), a battery (21) is arranged in the battery mounting groove, a controller (22) is arranged at one end of the handle (3) close to the top of the connecting rod (4), the output end of the battery (21) is electrically connected with the input end of the controller (22), and the output end of the controller (22) is electrically connected with the input end of the motor (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010486195.0A CN111603262B (en) | 2020-06-01 | 2020-06-01 | Special protector of clinical tooth body in oral cavity prepares |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010486195.0A CN111603262B (en) | 2020-06-01 | 2020-06-01 | Special protector of clinical tooth body in oral cavity prepares |
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| Publication Number | Publication Date |
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| CN111603262A CN111603262A (en) | 2020-09-01 |
| CN111603262B true CN111603262B (en) | 2022-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010486195.0A Active CN111603262B (en) | 2020-06-01 | 2020-06-01 | Special protector of clinical tooth body in oral cavity prepares |
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| WO2012003621A1 (en) * | 2010-07-05 | 2012-01-12 | Lin Yan-Zhang | Tongue isolation device with illumination |
| US9414896B2 (en) * | 2010-07-16 | 2016-08-16 | Mayo Foundation For Medical Education And Research | Methods and materials for oral stenting |
| CN108836246A (en) * | 2018-06-30 | 2018-11-20 | 中山大学肿瘤防治中心 | Oral cavity mouth gag |
| CN109966005A (en) * | 2019-05-14 | 2019-07-05 | 张静 | A kind of protecting device special for dental clinical tooth preparation |
| CN110063808A (en) * | 2018-01-22 | 2019-07-30 | 杨翠红 | It is a kind of for removing the oral care appliance of dental tartar |
| CN209808612U (en) * | 2019-03-11 | 2019-12-20 | 陈晓华 | Tongue device is kept off in oral cavity restoration |
| CN209996286U (en) * | 2019-02-25 | 2020-01-31 | 高迎 | oral cavity examination support convenient for height adjustment |
| CN210185544U (en) * | 2019-01-20 | 2020-03-27 | 马瑞 | Oral cavity clinical diagnosis device |
| CN210228372U (en) * | 2019-06-05 | 2020-04-03 | 丁大勇 | Jaw strutting arrangement about department of stomatology that possesses buffer function |
| CN111150516A (en) * | 2020-03-04 | 2020-05-15 | 王少华 | Special protective device for oral clinical tooth preparation |
-
2020
- 2020-06-01 CN CN202010486195.0A patent/CN111603262B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012003621A1 (en) * | 2010-07-05 | 2012-01-12 | Lin Yan-Zhang | Tongue isolation device with illumination |
| US9414896B2 (en) * | 2010-07-16 | 2016-08-16 | Mayo Foundation For Medical Education And Research | Methods and materials for oral stenting |
| CN110063808A (en) * | 2018-01-22 | 2019-07-30 | 杨翠红 | It is a kind of for removing the oral care appliance of dental tartar |
| CN108836246A (en) * | 2018-06-30 | 2018-11-20 | 中山大学肿瘤防治中心 | Oral cavity mouth gag |
| CN210185544U (en) * | 2019-01-20 | 2020-03-27 | 马瑞 | Oral cavity clinical diagnosis device |
| CN209996286U (en) * | 2019-02-25 | 2020-01-31 | 高迎 | oral cavity examination support convenient for height adjustment |
| CN209808612U (en) * | 2019-03-11 | 2019-12-20 | 陈晓华 | Tongue device is kept off in oral cavity restoration |
| CN109966005A (en) * | 2019-05-14 | 2019-07-05 | 张静 | A kind of protecting device special for dental clinical tooth preparation |
| CN210228372U (en) * | 2019-06-05 | 2020-04-03 | 丁大勇 | Jaw strutting arrangement about department of stomatology that possesses buffer function |
| CN111150516A (en) * | 2020-03-04 | 2020-05-15 | 王少华 | Special protective device for oral clinical tooth preparation |
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| CN111603262A (en) | 2020-09-01 |
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Effective date of registration: 20240131 Address after: 475000, Group 8, Huangyao Village, Zaoying Township, Lankao County, Kaifeng City, Henan Province Patentee after: Cheng Jianping Country or region after: China Address before: 273100 Room 502, unit 1, building 8, building 7, Chunqiu East Road, Qufu City, Jining City, Shandong Province Patentee before: Li Furui Country or region before: China |
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