CN113143259B - Oral cavity joint activity opening caliber - Google Patents
Oral cavity joint activity opening caliber Download PDFInfo
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- CN113143259B CN113143259B CN202110261146.1A CN202110261146A CN113143259B CN 113143259 B CN113143259 B CN 113143259B CN 202110261146 A CN202110261146 A CN 202110261146A CN 113143259 B CN113143259 B CN 113143259B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/1118—Determining activity level
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/1121—Determining geometric values, e.g. centre of rotation or angular range of movement
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/1121—Determining geometric values, e.g. centre of rotation or angular range of movement
- A61B5/1122—Determining geometric values, e.g. centre of rotation or angular range of movement of movement trajectories
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Abstract
The invention discloses an oral cavity joint movable opening measurer, wherein a first positioning mechanism comprises a limiting frame, a first positioning arm and a second positioning arm, the limiting frame is provided with a first opening, the limiting frame is provided with a second opening, and the rear end of the second positioning arm is provided with a first positioning component; the second positioning mechanism comprises a sphere, a third positioning arm and a fourth positioning arm, the sphere is arranged in the limiting frame and can rotate in the limiting frame, the third positioning arm extends out of the first opening, the fourth positioning arm extends out of the second opening, and the rear end of the fourth positioning arm is provided with a second positioning component; the first positioning arm is used for connecting the lower incisors, and the third positioning arm is used for connecting the upper incisors, so that the upper incisors drive the first positioning component to move, and the lower incisors drive the second positioning component to move, so that an incisor movement track is formed; the tracking mechanism is used for monitoring the first positioning component and the second positioning component, and can acquire the motion track of the incisor, so as to obtain the opening degree and the opening track of the patient, and the operation is simple, convenient and accurate.
Description
Technical Field
The invention is used in the technical field of medical instruments, and particularly relates to an oral cavity joint movement opening measurer.
Background
The temporomandibular joint, also known as "temporomandibular joint" or "mandibular joint", consists of the mandibular head, temporomandibular fossa and the articular nodules, which govern the opening and closing and chewing movements. In stomatology, the diagnosis and treatment of temporomandibular joint disease require positioning and recording of the opening degree, the opening track and the like of a patient. In clinical work, methods of visual inspection and ruler body surface measurement are generally adopted to determine the opening degree, the opening track and the like of a patient, and related data determined by the method cannot be quantified, so that the diagnosis information of the patient is not easy to grasp. In the prior art, although the partial opening measurer can quantify and record the related data, the equipment is extremely complex to operate and is not suitable for clinical operation. In addition, although the operation of part of mechanical mouth gag is simple, the mouth gag can only record the information such as the opening degree or the opening track of a patient, and composite diagnosis cannot be carried out, so that the follow-up diagnosis and analysis of related data are not facilitated.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art, and provides an oral joint movement opening measurer which can simultaneously acquire the opening degree and the opening track of a patient, is simple, convenient and accurate to operate and is suitable for clinical operation.
The technical scheme adopted for solving the technical problems is as follows:
an oral articulating opening measurer comprising:
the first positioning mechanism comprises a limiting frame, a first positioning arm and a second positioning arm, wherein the limiting frame is of a closed annular structure, the first positioning arm is positioned at the front end of the limiting frame and extends forwards, a first opening is formed in the top of the limiting frame at the first positioning arm, the second positioning arm is positioned at the rear end of the limiting frame and extends backwards, a second opening is formed in the bottom of the second positioning arm at the limiting frame, and a first positioning component is arranged at the rear end of the second positioning arm;
the second positioning mechanism comprises a sphere, a third positioning arm and a fourth positioning arm, wherein the sphere is installed in the limiting frame and can rotate in the limiting frame, the third positioning arm is positioned at the front end of the sphere and extends forwards to extend out of the first opening, the fourth positioning arm is positioned at the rear end of the sphere and extends backwards to extend out of the second opening, and a second positioning component is arranged at the rear end of the fourth positioning arm;
the first positioning arm is used for connecting a lower incisor, and the third positioning arm is used for connecting an upper incisor, so that the upper incisor drives the first positioning component to move, and the lower incisor drives the second positioning component to move, and an incisor movement track is formed;
and the tracking mechanism is used for monitoring the first positioning component and the second positioning component so as to acquire the incisor movement track.
In combination with the foregoing implementation manner, in some implementation manners of the present invention, the first positioning component and the second positioning component each include a light source, the tracking mechanism includes a test box, the test box is provided with a third opening, a light sensing sensor is disposed in the test box, and the second positioning arm and the fourth positioning arm both pass through the third opening and extend into the test box.
In combination with the above implementation, in some implementations of the invention, the tracking mechanism further includes a processor and a display, both of which are electrically connected to the processor.
In combination with the above implementation manner, in some implementation manners of the present invention, a first pressure sensor is disposed at an end of the second positioning arm, a second pressure sensor is disposed at an end of the fourth positioning arm, the first pressure sensor and the second pressure sensor are electrically connected to the processor, and the test box has elasticity.
In combination with the foregoing implementation, in some implementations of the present invention, the test cartridge has a top wall, a bottom wall, a first left side wall, a first right side wall, and a rear side wall, each of the top wall, the bottom wall, the first left side wall, the first right side wall, and the rear side wall including an outer wall, an inner wall, and a resilient return member mounted between the outer wall and the inner wall.
In combination with the above implementation manners, in some implementation manners of the present invention, the front end of the first positioning arm is detachably connected with a lower incisor bite tool, a first engagement groove is provided at the bottom of the lower incisor bite tool, the first engagement groove is used for engaging with the lower incisor, the front end of the third positioning arm is detachably connected with an upper incisor bite tool, and a second engagement groove is provided at the top of the upper incisor bite tool, and the second engagement groove is used for engaging with the upper incisor.
In combination with the above implementation manner, in some implementations of the present invention, a first boss is disposed at a front end of the third positioning arm, the upper incisor is provided with a first T-shaped slot, the third positioning arm extends into the first T-shaped slot and makes the first boss and the first T-shaped slot engage, a second boss is disposed at a front end of the first positioning arm, the lower incisor is provided with a second T-shaped slot, and the first positioning arm extends into the second T-shaped slot and makes the second boss and the second T-shaped slot engage.
In combination with the above implementation manner, in some implementation manners of the present invention, a first angle scale and a first displacement scale are disposed on a top surface of the sphere, the first angle scale is used for identifying a first angle of rotation of the sphere around a vertical direction, the first displacement scale is used for identifying distances between front ends of the first positioning arm and the third positioning arm corresponding to the first angle in a horizontal direction, a second angle scale and a second displacement scale are disposed on a side surface of the sphere, the second angle scale is used for identifying a second angle of rotation of the sphere around a front-back direction, the second displacement scale is used for identifying distances between front ends of the first positioning arm and the third positioning arm corresponding to the second angle in the vertical direction, and an observation window is disposed on a side surface of the limiting frame.
In combination with the above implementation manners, in some implementation manners of the present invention, the sphere, the third positioning arm and the fourth positioning arm are coaxially disposed, the second positioning arm has a second left side wall, a second right side wall and a top wall, the second left side wall, the top wall and the second right side wall are sequentially connected to form a groove shape, and the fourth positioning arm extends into the second positioning arm.
In combination with the foregoing implementation manner, in some implementation manners of the present invention, ends of the second positioning arm and the fourth positioning arm are tapered.
One of the above technical solutions has at least one of the following advantages or beneficial effects: when the opening degree and/or the opening track of the patient are/is to be measured, the lower incisors of the patient are fixed on the first positioning arm, and the upper incisors of the patient are fixed on the third positioning arm. When the patient opens, through spheroid and spacing frame matched with structural design, lower incisor and last incisor can drive first positioning arm and third positioning arm motion, correspondingly, second positioning arm and fourth positioning arm also make corresponding motion for first positioning part and second positioning part take place the displacement, track mechanism can acquire the incisor motion track, and then obtain patient's opening degree and opening track, easy operation is convenient and accurate, in being applicable to clinical operation, can alleviate medical staff's diagnosis burden.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic view of a first positioning mechanism according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a second positioning mechanism according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of an upper incisor bite tool engaged with a third positioning arm according to one embodiment of the invention;
FIG. 4 is a schematic view of the structure of an upper incisor bite tool according to an embodiment of the invention in threaded engagement with a third positioning arm;
FIG. 5 is a schematic view of the structure of an upper incisor bite block according to an embodiment of the invention when the upper incisor bite block is directly engaged with the third positioning arm;
FIG. 6 is a side view of the first positioning mechanism and the second positioning mechanism in an initial state according to one embodiment of the present invention;
FIG. 7 is a side view of the first positioning mechanism and the second positioning mechanism of the one embodiment shown in FIG. 6 in an open state;
FIG. 8 is a top view of a first positioning mechanism and a second positioning mechanism in an initial state according to an embodiment of the present invention;
FIG. 9 is a top view of the first positioning mechanism and the second positioning mechanism of the embodiment of FIG. 8 in an open state;
FIG. 10 is a schematic view of the second positioning arm and the fourth positioning arm extending into the test cartridge according to one embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present invention, but not to limit the scope of the present invention.
In the present invention, if directions (up, down, left, right, front and rear) are described, they are merely for convenience of description of the technical solution of the present invention, and do not indicate or imply that the technical features must be in a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, "a plurality of" means one or more, and "a plurality of" means two or more, and "greater than", "less than", "exceeding", etc. are understood to not include the present number; "above", "below", "within" and the like are understood to include this number. In the description of the present invention, the description of "first" and "second" if any is used solely for the purpose of distinguishing between technical features and not necessarily for the purpose of indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the present invention, unless clearly defined otherwise, terms such as "disposed," "mounted," "connected," and the like should be construed broadly and may be connected directly or indirectly through an intermediate medium, for example; the connecting device can be fixedly connected, detachably connected and integrally formed; can be mechanically connected, electrically connected or capable of communicating with each other; may be a communication between two elements or an interaction between two elements. The specific meaning of the words in the invention can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.
Referring to fig. 1, 2 and 6 to 9, an embodiment of the present invention provides an oral articulation opening measurer, which includes a first positioning mechanism 1, a second positioning mechanism 2 and a tracking mechanism. The first positioning mechanism 1 comprises a limiting frame 11, a first positioning arm 12 and a second positioning arm 13, wherein the limiting frame 11 is of a closed annular structure, the first positioning arm 12 is positioned at the front end of the limiting frame 11 and extends forwards, and a first opening 14 is formed in the top of the limiting frame 11 on the top of the first positioning arm 12. The second positioning arm 13 is located at the rear end of the limiting frame 11 and extends backwards, the bottom of the limiting frame 11 on the second positioning arm 13 is provided with a second opening 15, and the rear end of the second positioning arm 13 is provided with a first positioning component 16, see fig. 10. It will be appreciated that the first opening 14 and the second opening 15 comprise holes or slots or the like.
The second positioning mechanism 2 includes a sphere 21, a third positioning arm 22, and a fourth positioning arm 23, and the sphere 21 is mounted in the limit frame 11 and is rotatable in the limit frame 11, i.e., rotatable about the up-down direction and the front-rear direction. A third positioning arm 22 is located at the front end of the sphere 21 and extends forward to protrude from the first opening 14. The fourth positioning arm 23 is located at the rear end of the sphere 21 and extends rearward to protrude from the second opening 15, and the rear end of the fourth positioning arm 23 is provided with a second positioning member 24.
The first positioning arm 12 is used for connecting a lower incisor, and the third positioning arm 22 is used for connecting an upper incisor, that is, the lower incisor is fixed on the first positioning arm 12, and the upper incisor is fixed on the third positioning arm 22, so that the upper incisor drives the first positioning member 16 to move, and the lower incisor drives the second positioning member 24 to move, thereby forming an incisor movement track.
The tracking mechanism is used to monitor the first positioning member 16 and the second positioning member 24 to obtain the incisor motion profile.
When the opening degree and/or the opening trajectory of the patient are to be measured, the lower incisors of the patient are fixed to the first positioning arm 12, and the upper incisors of the patient are fixed to the third positioning arm 22, see fig. 6 and 8. When the patient is opened, the upper incisors and the lower incisors can drive the third positioning arms 22 and the first positioning arms 12 to move through the matched structural design of the sphere 21 and the limiting frame 11, see fig. 7 and 9. Correspondingly, the second positioning arm 13 and the fourth positioning arm 23 also make corresponding motions, so that the first positioning component 16 and the second positioning component 24 are displaced, the tracking mechanism can acquire the incisor motion track, and further the opening degree and the opening track of a patient are obtained, the operation is simple, convenient and accurate, the device is suitable for clinical operation, and the diagnostic burden of medical staff can be lightened.
The tracking mechanism may acquire the movement track of the first positioning member 16 and the second positioning member 24 by means of light sensing positioning, infrared light positioning, UWB high precision positioning, GPS positioning, or the like. Referring to fig. 10, in some embodiments, the first positioning member 16 and the second positioning member 24 each include a light source, the tracking mechanism includes a test cartridge 3, the test cartridge 3 is provided with a third opening 31, a photosensitive sensor (not shown) is provided in the test cartridge 3, and the second positioning arm 13 and the fourth positioning arm 23 each pass through the third opening 31 and extend into the test cartridge 3. Tracking of the first positioning member 16 and the second positioning member 24 is achieved by sensing the light source with a light sensing sensor. It is understood that the light source includes an LED lamp, a fluorescent lamp, or other calibration object that enables the light sensor to sense.
In some embodiments, the tracking mechanism further includes a processor and a display, both of which are electrically connected to the processor, and a light sensor that transmits the trajectories of the first and second positioning members 16, 24 to the processor in real time for storage and display to the display for viewing or transferring data by medical personnel.
Referring to fig. 10, in some embodiments, a first pressure sensor 41 is disposed at the end of the second positioning arm 13, a second pressure sensor 42 is disposed at the end of the fourth positioning arm 23, and the first pressure sensor 41 and the second pressure sensor 42 are electrically connected with the processor, so that stress information in the first pressure sensor 41 and the second pressure sensor 42 is transmitted to the processor for storage and display, and medical staff can conveniently obtain the force of the patient during the opening and closing movement, so as to diagnose the oral joint problem of the patient. The test box 3 has elasticity, and when the tail end of the second positioning arm 13 and the tail end of the fourth positioning arm 23 are pressed to the test box 3, the test box 3 can be prevented from limiting the size of the opening of a patient, and the accuracy of the opening degree of the patient is ensured.
The cartridge walls of the test cartridge 3 may be made of an elastic glue or may be provided with an elastic function by means of an elastic return member. Referring to fig. 10, in some embodiments, the test cartridge 3 has a top wall, a bottom wall, a first left side wall, a first right side wall, and a rear side wall, each of which includes an outer wall 32, an inner wall 33, and an elastic restoring member 34, and the elastic restoring member 34 is mounted on the outer wall 32 and the inner wall 33, so as to ensure that the inner wall 33 can be recessed in the direction of the outer wall 32 under the pressing of the second positioning arm 13 and the fourth positioning arm 23. After the diagnosis test is completed, the inner wall 33 of the test box 3 can return to the original position under the action of the elastic reset component 34, so that the requirement of clinical operation is met. Wherein the resilient return member 34 comprises a spring, disc spring, or the like.
Referring to fig. 1, 2, and 6-10, in some embodiments, the ends of the second positioning arm 13 and the fourth positioning arm 23 are tapered, so as to position the end positions of the second positioning arm 13 and the fourth positioning arm 23. At the same time, the collision of the ends of the second positioning arm 13 and the fourth positioning arm 23 with the plurality of inner walls 33 of the test cartridge 3 can be avoided, and the accuracy of the pressure measurement can be improved.
The front ends of the first positioning arm 12 and the third positioning arm 22 may be connected to the upper and lower incisors by providing a bite tool or directly providing a bite groove for the incisors to bite, or the like. Referring to fig. 3 to 5, in some embodiments, the front end of the first positioning arm 12 is detachably connected to the lower incisor bite 52, and a first engagement groove 521 is provided at the bottom of the lower incisor bite 52, and the first engagement groove 521 is configured to engage with the lower incisor to enable connection of the lower incisor with the first positioning arm 12. The front end of the third positioning arm 22 is detachably connected with an upper incisor bite device 51, a second biting groove 511 is formed in the top of the upper incisor bite device 51, and the second biting groove 511 is used for biting with the upper incisor to achieve connection of the upper incisor and the third positioning arm 22. Because the biting tool enters the oral cavity of a patient, the detachable lower incisor biting tool 52 and the detachable lower incisor biting tool 52 are arranged, so that the biting tool can be conveniently replaced or disinfected, cross infection is avoided, and the use safety of the device is ensured. It is understood that the first and second engagement grooves 521 and 511 are wedge-shaped.
Referring to fig. 3 to 5, the upper incisor bite 51 and the lower incisor bite 52 may be coupled by a snap-fit connection, a screw-fit connection, or a direct-fit connection. In some embodiments, the front end of the third positioning arm 22 is provided with a first boss 221, the upper incisor holder 51 is provided with a first T-shaped slot 512, the third positioning arm 22 extends into the first T-shaped slot 512 and makes the first boss 221 engage with the first T-shaped slot 512, the front end of the first positioning arm 12 is provided with a second boss, the lower incisor holder 52 is provided with a second T-shaped slot, the first positioning arm 12 extends into the second T-shaped slot and makes the second boss engage with the second T-shaped slot, so as to realize the detachable connection between the upper incisor holder 51 and the third positioning arm 22, and between the lower incisor holder 52 and the first positioning arm 12.
Referring to fig. 8 and 9, in some embodiments, the top surface of the sphere 21 is provided with a first angle scale 211 and a first displacement scale 212, the first angle scale 211 is used for identifying a first angle at which the sphere 21 rotates in the up-down direction, and the first displacement scale 212 is used for identifying a distance between the front end of the first positioning arm 12 and the front end of the third positioning arm 22 corresponding to the first angle in the left-right direction. Referring to fig. 2, 6 and 7, the side surface of the sphere 21 is provided with a second angle scale 213 and a second displacement scale 214, the second angle scale 213 is used for identifying a second angle by which the sphere 21 rotates around the front-rear direction, and the second displacement scale 214 is used for identifying a distance between the front end of the first positioning arm 12 and the front end of the third positioning arm 22 corresponding to the second angle in the up-down direction. Through setting up angle scale and displacement scale, can acquire opening degree and opening orbit by the manual work, guarantee that the diagnosis is effective, go on smoothly, avoid taking place because of measuring the box trouble and can't carry out the condition of diagnosis. The side surface of the limit frame 11 is provided with an observation window 111, so that the second angle scale 213 and the second displacement scale 214 can be observed conveniently, and corresponding second angles and corresponding second displacement readings can be read.
Referring to fig. 1, 6 and 7, the ball 21, the third positioning arm 22 and the fourth positioning arm 23 are coaxially arranged, the second positioning arm 13 has a second left side wall, a second right side wall and a top wall, the second left side wall, the top wall and the second right side wall are sequentially connected to form a groove shape, the fourth positioning arm 23 extends into the second positioning arm 13, and the fourth positioning arm 23 is movable in the second positioning arm 13. It will be appreciated that the ball 21, the third positioning arm 22 and the fourth positioning arm 23 may be integrally or separately manufactured.
In the description of the present specification, reference to the terms "example," "embodiment," or "some embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The present invention is, of course, not limited to the above-described embodiments, and one skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, which are intended to be included in the scope of the present invention as defined in the appended claims.
Claims (8)
1. An oral articulating opening measurer comprising:
the first positioning mechanism comprises a limiting frame, a first positioning arm and a second positioning arm, wherein the limiting frame is of a closed annular structure, the first positioning arm is positioned at the front end of the limiting frame and extends forwards, a first opening is formed in the top of the limiting frame at the first positioning arm, the second positioning arm is positioned at the rear end of the limiting frame and extends backwards, a second opening is formed in the bottom of the second positioning arm at the limiting frame, and a first positioning component is arranged at the rear end of the second positioning arm;
the second positioning mechanism comprises a sphere, a third positioning arm and a fourth positioning arm, wherein the sphere is installed in the limiting frame and can rotate in the limiting frame, the third positioning arm is positioned at the front end of the sphere and extends forwards to extend out of the first opening, the fourth positioning arm is positioned at the rear end of the sphere and extends backwards to extend out of the second opening, the rear end of the fourth positioning arm is provided with a second positioning part, the top surface of the sphere is provided with a first angle scale and a first displacement scale, the first angle scale is used for marking a first angle for marking the rotation of the sphere around the vertical direction, the first displacement scale is used for marking the distance between the front ends of the first positioning arm and the third positioning arm corresponding to the first angle in the left-right direction, the side surface of the sphere is provided with a second angle scale and a second displacement scale, the second angle scale is used for marking a second angle for rotating the sphere around the front-rear direction, the second displacement scale is used for marking a second angle for marking the rotation of the second positioning arm corresponding to the second angle, and the side surface of the third positioning arm is provided with a limiting window on the upper side surface of the first positioning arm corresponding to the first positioning arm;
the first positioning arm is used for connecting a lower incisor, and the third positioning arm is used for connecting an upper incisor, so that the upper incisor drives the first positioning component to move, and the lower incisor drives the second positioning component to move, and an incisor movement track is formed;
the tracking mechanism is used for monitoring the first positioning component and the second positioning component so as to acquire the incisor movement track;
the first positioning component and the second positioning component both comprise light sources, the tracking mechanism comprises a test box, the test box is provided with a third opening, a light sensing sensor is arranged in the test box, and the second positioning arm and the fourth positioning arm both penetrate through the third opening and extend into the test box.
2. The oral articulation opening measurer of claim 1 wherein the tracking mechanism further comprises a processor and a display, the display and the light sensing sensor each being electrically connected to the processor.
3. The oral articulation opening measurer according to claim 2, wherein a first pressure sensor is provided at an end of the second positioning arm, a second pressure sensor is provided at an end of the fourth positioning arm, the first pressure sensor and the second pressure sensor are electrically connected to the processor, and the test cartridge has elasticity.
4. The oral articulation opening measurer of claim 3 wherein the test cartridge has a top wall, a bottom wall, a first left side wall, a first right side wall, and a rear side wall, the top wall, the bottom wall, the first left side wall, the first right side wall, and the rear side wall each comprising an outer wall, an inner wall, and a resilient return member mounted between the outer wall and the inner wall.
5. The oral articulatory opening measurer according to claim 1, wherein a front end of the first positioning arm is detachably connected to a lower incisor mouthpiece, a bottom of the lower incisor mouthpiece is provided with a first engaging groove for engaging with the lower incisor, a front end of the third positioning arm is detachably connected to an upper incisor mouthpiece, and a top of the upper incisor mouthpiece is provided with a second engaging groove for engaging with the upper incisor.
6. The oral cavity articulating opening measurer according to claim 5, wherein the third positioning arm has a first boss at a front end thereof, the upper incisor is provided with a first T-shaped slot, the third positioning arm extends into the first T-shaped slot and engages the first boss with the first T-shaped slot, the first positioning arm has a second boss at a front end thereof, the lower incisor is provided with a second T-shaped slot, and the first positioning arm extends into the second T-shaped slot and engages the second boss with the second T-shaped slot.
7. The oral articulating opening measurer according to claim 1, wherein the sphere, the third positioning arm and the fourth positioning arm are coaxially disposed, the second positioning arm has a second left side wall, a second right side wall and a top wall, the second left side wall, the top wall and the second right side wall are sequentially connected to form a groove shape, and the fourth positioning arm extends into the second positioning arm.
8. The oral articulation opening measurer according to claim 1, wherein the distal ends of the second and fourth positioning arms are tapered.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110261146.1A CN113143259B (en) | 2021-03-10 | 2021-03-10 | Oral cavity joint activity opening caliber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110261146.1A CN113143259B (en) | 2021-03-10 | 2021-03-10 | Oral cavity joint activity opening caliber |
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| CN113143259A CN113143259A (en) | 2021-07-23 |
| CN113143259B true CN113143259B (en) | 2023-06-02 |
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2021
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