CN113876288B - Oral cavity support frame capable of widening exposed visual field of oral cavity - Google Patents

Oral cavity support frame capable of widening exposed visual field of oral cavity Download PDF

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Publication number
CN113876288B
CN113876288B CN202111204828.5A CN202111204828A CN113876288B CN 113876288 B CN113876288 B CN 113876288B CN 202111204828 A CN202111204828 A CN 202111204828A CN 113876288 B CN113876288 B CN 113876288B
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China
Prior art keywords
oral cavity
air
fixing
sealing
elastic
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CN202111204828.5A
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CN113876288A (en
Inventor
赖晓玲
范小兰
朱金艳
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SCHOOL & HOSPITAL OF STOMATOLOGY WENZHOU MEDICAL UNIVERSITY
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SCHOOL & HOSPITAL OF STOMATOLOGY WENZHOU MEDICAL UNIVERSITY
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Publication of CN113876288A publication Critical patent/CN113876288A/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/24Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C19/00Dental auxiliary appliances

Abstract

The invention discloses an oral cavity support frame capable of widening an exposed visual field of an oral cavity, which comprises an upper tooth sleeve and a lower tooth sleeve which are hinged with each other, wherein the upper tooth sleeve and the lower tooth sleeve respectively comprise a pair of fixing frames and elastic supporting rods arranged between the fixing frames, the lower tooth sleeve also comprises a pair of fixing plates used for abutting against the outer side wall of a slot tooth, the two fixing plates are respectively in one-to-one correspondence with the two fixing frames and are fixedly connected with the fixing frames, one side of each fixing plate is connected with an elastic fixing rod in a sliding manner, a dovetail block is arranged at the end part, far away from the fixing plates, of one elastic fixing rod, and a dovetail groove and an unlocking plane which can be matched with the dovetail block are arranged at the end part, far away from the fixing plates, of the other elastic fixing rod. The invention has the effect of widening the naked visual field of the oral cavity.

Description

Oral cavity support frame capable of widening exposed visual field of oral cavity
Technical Field
The invention relates to the field of oral medical instruments, in particular to an oral cavity support frame capable of widening the exposed visual field of an oral cavity.
Background
In the treatment and nursing process of oral diseases, the oral cavity of a patient is often required to be kept in an open state for a long time, so that muscles on the face of the patient are easy to fatigue due to the open of the oral cavity, the patient is difficult to persist in long-time treatment and nursing, and a proper rest is required, so that the treatment and nursing of medical staff to the oral cavity of the patient are interrupted, the treatment and nursing time is prolonged, and the working efficiency is reduced.
Based on the above problems, the applicant previously developed and filed a chinese patent publication No. CN113243884A, i.e., a supporting device for oral medical examination. The supporting apparatus comprises an upper gear sleeve and a lower gear sleeve, wherein the upper gear sleeve and the lower gear sleeve respectively comprise a pair of fixing frames and an elastic supporting rod positioned between the fixing frames; two fixing frames positioned on the same side of the upper tooth sleeve and the lower tooth sleeve are hinged with each other, the lower end face of the upper fixing frame is hinged with a sliding pipe, the upper end faces of two ends of the lower fixing frame are hinged with sliding rods, and a driving spring is arranged between each sliding pipe and each sliding rod; a tongue depressor is arranged on the elastic supporting rod at the lower part.
Although this prior art can effectively alleviate patient's fatigue, improve medical personnel work efficiency. However, the support does not adjust the width of the patient's mouth opening, which limits the patient's bare oral field of view, and applicant continues to improve.
Disclosure of Invention
The invention aims to provide an oral cavity support frame capable of widening the exposed visual field of an oral cavity, which has the effect of widening the exposed visual field of the oral cavity.
The technical purpose of the invention is realized by the following technical scheme: the oral cavity support frame capable of widening the exposed visual field of the oral cavity comprises an upper tooth sleeve and a lower tooth sleeve which are hinged with each other, wherein the upper tooth sleeve and the lower tooth sleeve respectively comprise a pair of fixing frames and elastic supporting rods arranged between the fixing frames, the lower tooth sleeve also comprises a pair of fixing plates used for abutting against the outer side walls of groove teeth, the two fixing plates are respectively in one-to-one correspondence with the two fixing frames and are fixedly connected with the fixing frames, one side of each fixing plate is slidably connected with an elastic fixing rod, a dovetail block is arranged at the end part, away from the fixing plates, of one elastic fixing rod, and a dovetail groove and an unlocking plane which can be matched with the dovetail block are arranged at the end part, away from the fixing plates, of the other elastic fixing rod;
when the dovetail block is matched with the dovetail groove, the two elastic fixing rods are locked to surround and abut against the outer sides of teeth; when the dovetail block is matched with the unlocking plane, the two elastic fixing rods realize unlocking, and at the moment, the two elastic fixing rods respectively bend towards two sides of the mouth corner of the human body under the action of no external force and apply force to the mouth corner so as to widen the exposed width of the oral cavity.
The invention is further configured as follows: an inner cylinder is arranged in each fixing plate, an air storage cavity is formed by enclosing between the inner wall of each fixing plate and the outer wall of each inner cylinder, an opening is formed in one end, facing the outside of the oral cavity, of each inner cylinder, a piston is arranged in each opening, the piston is connected with the opening in a sliding mode, and one end, facing the opening, of the piston is fixedly connected with an elastic fixing rod;
one end, far away from the opening, of the fixing plate is detachably connected with a clamping plate, one side, facing the clamping plate, of the fixing plate is provided with a notch, a bidirectional sealing element is arranged in the notch, the bidirectional sealing element is fixed by the clamping plate, the clamping plate is provided with an air hole communicated with the air storage cavity, the bidirectional sealing element can respectively realize any sealing on one end or the air hole of the inner cylinder under the action of air pressure, and one side of the clamping element is provided with an air valve matched with the air hole;
the bidirectional sealing element comprises a sealing sheet capable of plugging an air hole or one end of the inner cylinder, the diameter of the sealing sheet is larger than the outer diameter of the inner cylinder, so that the periphery of the sealing sheet can be contacted with the air storage cavity, the sealing sheet plugs one end of the inner cylinder under the action of no external force, and at the moment, the sealing sheet, the inner cylinder and the piston jointly enclose to form a closed air cavity;
the periphery of the sealing piece is provided with a plurality of connecting pieces matched with the notches, a ventilation gap is arranged between any two connecting pieces, and the air hole is communicated with the air storage cavity through the ventilation gap.
The invention is further provided with: the lower end surfaces of the upper fixing frames are hinged with sliding pipes, the upper end surfaces of the lower fixing frames are hinged with sliding rods which are in sliding connection with the sliding pipes, and driving springs are arranged between the sliding pipes and the sliding rods;
every vertically be provided with the air flue in the slide bar, every the upper end of air flue runs through the up end of slide bar, and the lower extreme is buckled and is run through the lower extreme lateral wall of slide bar, be located air flue on the lower extreme lateral wall of slide bar can be dismantled and be connected with flexible trachea, tracheal other end and dismantling of pneumatic valve are connected.
The invention is further provided with: one side of the fixing frame is provided with a yielding hole through which the air supply pipe can pass.
The invention is further provided with: the inner side wall of the elastic supporting rod positioned below the tongue depressor is horizontally extended and provided with a tongue depressor, two parallel baffles are arranged at the bottom of the tongue depressor, and the two baffles are respectively positioned at two sides of the tongue.
The invention is further provided with: the tongue depressor is internally provided with a controller capable of opening and closing an air valve, the controller is in signal connection with the air valve, a connecting hole is formed in the lower end face of the tongue depressor, a switch is arranged at the connecting hole in a matched mode on the controller, and the switch is a button switch;
the lower terminal surface of tongue depressor articulates there is the closing plate, the closing plate is used for covering the connecting hole, be provided with the torsional spring between closing plate and the tongue depressor, the connecting hole is circular-arc setting, the lateral wall of closing plate is provided with and is used for imbedding the sealed post that presses in the connecting hole and go on pressing button switch.
In conclusion, the invention has the following beneficial effects: when the support frame is worn, the mouth of a patient is opened, and then the upper tooth sleeve and the lower tooth sleeve are sleeved on the upper tooth part and the lower tooth part. At this time, the elastic support rods are pressed against the inner sides of the teeth, and the two elastic fixing rods are pressed against the outer sides of the teeth of the lower tooth part in a surrounding manner.
When the width of the mouth opening of the patient needs to be increased, a doctor holds dental forceps to move the two elastic fixing rods towards the direction close to each other, at the moment, the dovetail block on one elastic fixing rod can move to be matched with the unlocking plane on the other elastic fixing rod, unlocking of the two elastic fixing rods can be achieved, and at the moment, the two elastic fixing rods bend towards two sides of the mouth angle of the human body respectively under the action of no external force and apply force to the mouth angle to widen the exposed visual field of the mouth. Further, it is to be specifically noted that: the utility model provides an elasticity dead lever slides and sets up on the fixed plate, and the fixed plate is with back groove tooth lateral wall matched with, therefore two elasticity dead levers when crooked to mouth angle department, can not influence doctor's sight, can not influence dental instrument yet and put into the oral cavity.
Drawings
FIG. 1 is a schematic structural view of an embodiment;
FIG. 2 is an exploded view of the structure of FIG. 1;
FIG. 3 is a schematic structural view of two elastic fixing rods in FIG. 1;
FIG. 4 is a schematic view of the structure of FIG. 3 in another orientation;
fig. 5 is a schematic structural view of the tongue depressor in fig. 1;
fig. 6 is a structural sectional view of the fixing plate of fig. 1;
FIG. 7 is a schematic view of the construction of the bi-directional seal of FIG. 6;
fig. 8 is a schematic structural view of the oral cavity supporter in a state of widening the oral cavity.
Reference numerals: 1. mounting a gear sleeve; 2. a lower gear sleeve; 3. a fixed mount; 4. an elastic support bar; 5. a fixing plate; 6. an elastic fixing rod; 7. a dovetail block; 8. a dovetail groove; 9. an unlocking plane; 10. an inner barrel; 11. a gas storage cavity; 12. an opening; 13. a piston; 14. a clamping plate; 15. a notch; 16. a bi-directional seal; 17. air holes; 18. an air valve; 19. sealing the sheet; 20. an air cavity; 21. connecting sheets; 22. a vent gap; 23. a sliding tube; 24. a slide bar; 25. a drive spring; 26. an airway; 27. an air tube; 28. a hole for abdication; 29. a tongue depressor; 30. a baffle plate; 31. connecting holes; 32. a sealing plate; 33. the column is sealed.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 8, a mouth support frame capable of widening the exposed visual field of the mouth comprises an upper tooth sleeve 1 and a lower tooth sleeve 2 which are hinged with each other, wherein each of the upper tooth sleeve 1 and the lower tooth sleeve 2 comprises a pair of fixed frames 3 and an elastic support rod 4 arranged between the fixed frames 3, and the elastic support rod 4 is abutted against the inner sides of teeth;
the lower tooth sleeve 2 further comprises a pair of fixing plates 5 which are used for abutting against the outer side wall of the groove tooth, and the two fixing plates 5 correspond to the two fixing frames 3 one to one and are fixedly connected with the fixing frames 3. One side of each fixing plate 5 is connected with an elastic fixing rod 6 in a sliding mode, a dovetail block 7 is arranged at the end portion, far away from the fixing plate 5, of one elastic fixing rod 6, and a dovetail groove 8 and an unlocking plane 9 which can be matched with the dovetail block 7 are arranged at the end portion, far away from the fixing plate 5, of the other elastic fixing rod 6.
When the dovetail block 7 is matched with the dovetail groove 8, the two elastic fixing rods 6 are locked to be circumferentially abutted against the outer sides of teeth; when the dovetail block 7 is matched with the unlocking plane 9, the two elastic fixing rods 6 realize unlocking, and at the moment, the two elastic fixing rods 6 respectively bend towards the two sides of the mouth corner of the human body under the action of no external force and apply force to the mouth corner so as to widen the exposed width of the oral cavity.
When wearing the support frame, the mouth of the patient is opened, and then the upper tooth sleeve 1 and the lower tooth sleeve 2 are sleeved on the upper tooth part and the lower tooth part. At this time, the elastic support rods 4 are abutted against the inner sides of the teeth, and the two elastic fixing rods 6 are circumferentially abutted against the outer sides of the teeth of the lower teeth part.
When the width that the increase patient oral cavity was opened is needed, the doctor held the dental forceps and removed two elasticity dead levers 6 towards the direction that is close to each other, and dovetail 7 on one of them elasticity dead lever 6 can remove to cooperate with unblock plane 9 on another elasticity dead lever 6 this moment, can realize the unblock of two elasticity dead levers 6, and two elasticity dead levers 6 are crooked and to the mouth angle application of force in order to widen the exposed field of vision of oral cavity to human mouth angle both sides respectively under no exogenic action this moment. Further, it is to be specifically noted that: the elastic fixing rods 6 are arranged on the fixing plate 5 in a sliding mode, the fixing plate 5 is matched with the outer side wall of the posterior trough tooth, and therefore when the two elastic fixing rods 6 bend towards the corner of the mouth, the vision of a doctor cannot be influenced, and the dental instrument cannot be placed in the oral cavity.
Furthermore, each fixing plate 5 is internally provided with an inner cylinder 10, an air storage cavity 11 is formed by enclosing between the inner wall of the fixing plate 5 and the outer wall of the inner cylinder 10, an opening 12 is formed in one end, facing the outside of the oral cavity, of the inner cylinder 10, a piston 13 is arranged in the opening 12, the piston 13 is slidably connected with the opening 12, and one end, facing the opening 12, of the piston 13 is fixedly connected with the elastic fixing rod 6.
A clamping plate 14 is detachably connected to one end of the fixing plate 5 far away from the opening 12, a notch 15 is arranged on one side of the fixing plate 5 facing the clamping plate 14, a bidirectional sealing element 16 is arranged in the notch 15, and the bidirectional sealing element 16 is fixed by the clamping plate 14. The clamping plate 14 is provided with an air hole 17 communicated with the air storage cavity 11. The bidirectional sealing element 16 can respectively realize any sealing to one end of the inner cylinder 10 or the air hole 17 under the action of gas pressure, and one side of the clamping element is provided with an air valve 18 matched with the air hole 17.
The two-way sealing member 16 includes a sealing piece 19 for sealing the air hole 17 or one end of the inner cylinder 10, and the diameter of the sealing piece 19 is larger than the outer diameter of the inner cylinder 10 so that the outer circumference of the sealing piece 19 is in contact with the air storage chamber 11. The sealing sheet 19 seals one end of the inner cylinder 10 under the action of no external force, and at the moment, the sealing sheet 19, the inner cylinder 10 and the piston 13 jointly enclose to form a closed air cavity 20. The periphery of the sealing sheet 19 is provided with a plurality of connecting sheets 21 matched with the notches 15, a ventilation gap 22 is arranged between any two connecting sheets 21, and the air hole 17 is communicated with the air storage cavity 11 through the ventilation gap 22.
In practical use, a medical syringe is taken to extract external air, then the syringe needle is matched with the air valve 18 to enable the air in the syringe to enter the air hole 17, and at the moment, the air pressure in the air hole 17 is larger than the air pressure in the air cavity 20, so that the sealing sheet 19 on the two-way sealing element 16 seals one end of the inner cylinder 10, and the air is prevented from entering the air cavity 20. At this time, the external air injected from the syringe can enter the gas storage chamber 11 along the ventilation gap 22, and the pressure in the gas storage chamber 11 gradually increases as the injected air increases.
At this time, only the gas valve 18 needs to be opened, the gas in the gas storage cavity 11 is released outwards through the gas valve 18, the pressure of the peripheral part of the sealing sheet 19 facing the gas storage cavity 11 is higher than the pressure of the peripheral part of the sealing sheet 19 facing the gas hole 17, the sealing sheet 19 protrudes towards the gas hole 17 due to unbalanced pressure, and the sealing sheet is separated from the sealing of one end of the inner cylinder 10 to seal the gas hole 17. At this time, the air storage cavity 11 is communicated with the air cavity 20, the air in the air storage cavity 1127 instantly turns to the air cavity 20, the piston 13 is pushed to move towards the opening 12 under the action of air pressure, and at this time, each elastic fixing rod 6 moves towards the other elastic fixing rod 6, so that unlocking between the two elastic fixing rods 6 is realized.
Further, the lower end surfaces of the pair of upper fixing frames 3 are hinged with sliding tubes 23, the upper end surfaces of the pair of lower fixing frames 3 are hinged with sliding rods 24 connected with the sliding tubes 23 in a sliding manner, and driving springs 25 are arranged between the sliding tubes 23 and the sliding rods 24.
An air passage 26 is vertically arranged in each sliding rod 24, the upper end of each air passage 26 penetrates through the upper end face of each sliding rod 24, and the lower end of each air passage 26 is bent to penetrate through the side wall of the lower end of each sliding rod 24. A flexible air pipe 27 is detachably connected to the air passage 26 provided on the lower end side wall of the slide bar 24, and the other end of the air pipe 27 is detachably connected to the air valve 18.
When the air valve 18 is opened, the elastic fixing rod 6 moves towards the other elastic fixing rod 6, and then the two elastic fixing rods 6 are unlocked. At this time, the gas in the gas storage chamber 11 is discharged to the outside through the gas valve 18 to the gas pipe 27, and is introduced into the region between the sliding pipe 23 and the sliding rod 24 through the gas pipe 27. At the same time, the area between the sliding tube 23 and the sliding rod 24 is filled with compressed air. Therefore, the upper tooth sleeve 1 and the lower tooth sleeve 2 can slightly move, so that the patient can move the muscles on the face by opening and closing the upper tooth part and the lower tooth part, the phenomena of muscle stiffness and soreness are avoided, and the use convenience and the use comfort are improved.
When the support frame needs to be taken down, a doctor only needs to hold the oral scissors to cut off the air pipe 27, so that compressed air in the area between the sliding pipe 23 and the sliding rod 24 is exhausted, and the upper tooth sleeve 1 and the lower tooth sleeve 2 can move towards the direction close to each other and further can be taken down from the oral cavity of a patient.
Furthermore, one side of the fixing frame 3 is provided with a yielding hole 28 through which the air supply pipe 27 can pass, and the position of the air pipe 27 can be limited by the yielding hole 28, so that the phenomenon that the air pipe 27 moves in the mouth to influence the visual field or is bitten off by the teeth of a patient accidentally is avoided.
Furthermore, a tongue depressor 29 is horizontally arranged on the inner side wall of the lower elastic support rod 4 in an extending manner, two parallel baffles 30 are arranged at the bottom of the tongue depressor 29, and the two baffles 30 are respectively arranged at two sides of the tongue.
Because some oral patients are children, the children have a little insufficient control force on their tongues. Therefore, the two baffle plates 30 are used for limiting the two sides of the tongue of the child, so that the tongue is prevented from moving up and down and moving left and right, and the oral vision and the oral treatment are further influenced.
Further, a controller (not shown in the figure) capable of opening and closing the air valve 18 is arranged in the tongue depressor 29, and the controller is in signal connection with the air valve 18. The lower end face of the tongue depressor 29 is provided with a connecting hole 31, and the controller is provided with a switch (not shown in the figure) which is a button switch in a matching way at the connecting hole 31.
A sealing plate 32 is hinged to the lower end face of the tongue depressor 29, the sealing plate 32 is used for covering the connecting hole 31, a torsion spring is arranged between the sealing plate 32 and the tongue depressor 29, the connecting hole 31 is arranged in an arc shape, and a sealing column 33 which is used for being embedded into the connecting hole 31 and pressing a button switch is arranged on the side wall of the sealing plate 32.
In specific use, the tongue extends into the lower part of the tongue depressor 29, and the tongue drives the sealing plate 32 to automatically turn over and cover the connecting hole 31. Meanwhile, the sealing column 33 on the sealing plate 32 is inserted into the connecting hole 31 and presses the button switch in the tongue depressor 29, and the controller wirelessly controls the air valve 18 to be opened. Thereby realizing that:
1. the two elastic fixing rods 6 move toward a direction of approaching each other, thereby achieving unlocking between the two elastic fixing rods 6.
2. The gas in the gas storage chamber 11 is released to the outside through the gas valve 18 to the gas pipe 27, and is guided into the area between the sliding pipe 23 and the sliding rod 24 through the gas pipe 27. When can realize going up tooth cover 1 and 2 supports of tooth cover down, can also let and go up tooth cover 1 and can slightly move about between the tooth cover 2 down.
In the above, the elastic fixing rod 6 may be made of a hard silicone material, which is bent toward the mouth corner in a natural state, and has a certain rigidity so as to contact and press the mouth corner.
Specifically, the following are provided: the oral cavity support frame of this application can also be used for the smiling face exercise, and the device can act on the apple muscle and the orbicularis oris muscle of human face to human face forms the memory habit, and then will form the smiling lip naturally.
The specific embodiments are merely illustrative and not restrictive, and those skilled in the art can modify the embodiments without inventive contribution as required after reading this specification, but only within the scope of the claims of the present invention.

Claims (5)

1. The utility model provides a can widen oral cavity support frame in the naked field of vision of oral cavity, includes mutual articulated last tooth cover (1) and lower tooth cover (2), go up tooth cover (1) and down tooth cover (2) all include a pair of mount (3) and set up in elastic support pole (4) between a pair of mount (3), its characterized in that: the lower tooth sleeve (2) further comprises a pair of fixing plates (5) used for abutting against the outer side wall of the groove tooth, the two fixing plates (5) are respectively in one-to-one correspondence with the two fixing frames (3) and are fixedly connected with the fixing frames (3), one side of each fixing plate (5) is connected with an elastic fixing rod (6) in a sliding mode, a dovetail block (7) is arranged at the end portion, away from the fixing plates (5), of one elastic fixing rod (6), and a dovetail groove (8) and an unlocking plane (9) which can be matched with the dovetail block (7) are arranged at the end portion, away from the fixing plates (5), of the other elastic fixing rod (6);
when the dovetail block (7) is matched with the dovetail groove (8), the two elastic fixing rods (6) are locked to be circumferentially abutted against the outer sides of teeth; when the dovetail block (7) is matched with the unlocking plane (9), the two elastic fixing rods (6) are unlocked, and at the moment, the two elastic fixing rods (6) are respectively bent towards two sides of a mouth corner of a human body under the action of no external force and apply force to the mouth corner to widen the exposed width of the oral cavity;
an inner cylinder (10) is arranged in each fixing plate (5), an air storage cavity (11) is formed by enclosing between the inner wall of each fixing plate (5) and the outer wall of each inner cylinder (10), an opening (12) is formed in one end, facing the outside of the oral cavity, of each inner cylinder (10), a piston (13) is arranged in each opening (12), each piston (13) is connected with each opening (12) in a sliding mode, and one end, facing each opening (12), of each piston (13) is fixedly connected with an elastic fixing rod (6);
one end, far away from the opening (12), of the fixing plate (5) is detachably connected with a clamping plate (14), one side, facing the clamping plate (14), of the fixing plate (5) is provided with a notch (15), a bidirectional sealing element (16) is arranged in the notch (15), the bidirectional sealing element (16) is fixed by the clamping plate (14), the clamping plate (14) is provided with an air hole (17) communicated with the air storage cavity (11), the bidirectional sealing element (16) can respectively realize any sealing on one end of the inner barrel (10) or the air hole (17) under the action of air pressure, and one side of the clamping plate (14) is provided with an air valve (18) matched with the air hole (17);
the bidirectional sealing element (16) comprises a sealing sheet (19) capable of sealing an air hole (17) or one end of the inner cylinder (10), the diameter of the sealing sheet (19) is larger than the outer diameter of the inner cylinder (10) so that the periphery of the sealing sheet (19) can be contacted with the air storage cavity (11), the sealing sheet (19) seals one end of the inner cylinder (10) under the effect of no external force, and at the moment, the sealing sheet (19), the inner cylinder (10) and the piston (13) jointly enclose to form a closed air cavity (20);
the periphery of the sealing piece (19) is provided with a plurality of connecting pieces (21) matched with the notches (15), a ventilation gap (22) is arranged between any two connecting pieces (21), and the air hole (17) is communicated with the air storage cavity (11) through the ventilation gap (22).
2. The oral cavity support frame capable of widening the exposed visual field of the oral cavity as claimed in claim 1, wherein: the lower end surfaces of the upper pair of the fixed frames (3) are hinged with sliding pipes (23), the upper end surfaces of the lower pair of the fixed frames (3) are hinged with sliding rods (24) which are connected with the sliding pipes (23) in a sliding mode, and driving springs (25) are arranged between the sliding pipes (23) and the sliding rods (24);
every vertically be provided with air flue (26) in slide bar (24), every the up end that slide bar (24) was run through to the upper end of air flue (26), and the lower extreme is buckled and is run through the lower extreme lateral wall of slide bar (24), be located air flue (26) on the lower extreme lateral wall of slide bar (24) can be dismantled and be connected with flexible trachea (27), the other end and pneumatic valve (18) of trachea (27) can be dismantled and be connected.
3. The oral cavity support frame capable of widening the exposed visual field of the oral cavity as claimed in claim 2, wherein: and one side of the fixing frame (3) positioned on the lower gear sleeve (2) is provided with a yielding hole (28) through which an air supply pipe (27) can pass.
4. The oral cavity support frame capable of widening the exposed visual field of the oral cavity as claimed in claim 3, wherein: a tongue depressor (29) is horizontally arranged on the inner side wall of the elastic supporting rod (4) positioned below in an extending mode, two parallel baffles (30) are arranged at the bottom of the tongue depressor (29), and the two baffles (30) are respectively positioned on two sides of a tongue.
5. The oral cavity support frame capable of widening the exposed visual field of the oral cavity as claimed in claim 4, wherein: a controller capable of opening and closing the air valve (18) is arranged in the tongue depressor (29), the controller is in signal connection with the air valve (18), a connecting hole (31) is formed in the lower end face of the tongue depressor (29), a switch is arranged on the connecting hole (31) of the controller in a matched mode, and the switch is a button switch;
the lower terminal surface of tongue depressor (29) articulates there is sealing plate (32), sealing plate (32) are used for covering connecting hole (31), be provided with the torsional spring between sealing plate (32) and tongue depressor (29), connecting hole (31) are circular-arc setting, the lateral wall of sealing plate (32) is provided with and is used for imbedding in connecting hole (31) and carry out sealed post (33) pressed to button switch.
CN202111204828.5A 2021-10-15 2021-10-15 Oral cavity support frame capable of widening exposed visual field of oral cavity Active CN113876288B (en)

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CN113876288B true CN113876288B (en) 2022-09-13

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CN113243884B (en) * 2021-06-02 2021-11-30 温州医科大学附属口腔医院 Supporting instrument for oral medical examination

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