CN216933260U - Jaw support lifting device for oral CT - Google Patents
Jaw support lifting device for oral CT Download PDFInfo
- Publication number
- CN216933260U CN216933260U CN202123434268.0U CN202123434268U CN216933260U CN 216933260 U CN216933260 U CN 216933260U CN 202123434268 U CN202123434268 U CN 202123434268U CN 216933260 U CN216933260 U CN 216933260U
- Authority
- CN
- China
- Prior art keywords
- jaw support
- jaw
- rotating shaft
- limiting
- oral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Apparatus For Radiation Diagnosis (AREA)
Abstract
The utility model provides a jaw support lifting device for oral cavity CT, which belongs to the technical field of oral cavity CT and comprises: the jaw support comprises a jaw support body and a jaw support body, wherein the jaw support body is provided with a supporting surface for supporting; one end of the rotating shaft is connected with the jaw support body; the jaw bracket is rotatably connected with the rotating shaft; a ratchet mechanism is arranged between the jaw bracket and the rotating shaft; the ratchet mechanism comprises a plurality of ratchets which are sequentially arranged along the axial direction of the rotating shaft and also comprises a stop piece which is matched with the ratchets; the stop piece is telescopically arranged in the jaw bracket; the jaw support lifting device for oral CT can quickly realize the height adjustment of the jaw support body.
Description
Technical Field
The utility model relates to the technical field of oral cavity CT, in particular to a jaw support lifting device for oral cavity CT.
Background
When the oral cavity CT photographs the oral cavity of a human body, the midsagittal plane of the head of the patient needs to coincide with the midsagittal plane in the CT image. If the head of the patient shakes a lot in the shooting process, the shot image is not clear. Therefore, the jaw support is arranged in the oral CT to limit the face, and the head of a patient can be well positioned.
Because the height of the patient is different and a certain time is consumed in the shooting process, the body strength of the patient can be insufficient if the jaw support is designed to be at a fixed height. In the prior art, the lower end of the jaw support is provided with a lifting device, and particularly, the lifting device can use a pair of clamping grooves and positioning insertion plates on the adjusting stand column to realize the positioning of a plurality of positions so as to realize the adjustment of the height of the jaw support.
However, when the height of the jaw support is adjusted, the adjusting process is troublesome, and the time is wasted.
SUMMERY OF THE UTILITY MODEL
Therefore, the technical problem to be solved by the utility model is to overcome the defects of troublesome adjusting process and long time waste in the prior art when the height of the jaw support is adjusted, thereby providing the jaw support lifting device for oral CT.
In order to solve the technical problem, the utility model provides a jaw support lifting device for oral cavity CT, comprising:
the jaw support comprises a jaw support body and a jaw support body, wherein the jaw support body is provided with a supporting surface for supporting;
one end of the rotating shaft is connected with the jaw support body;
the jaw bracket is rotatably connected with the rotating shaft; a ratchet mechanism is arranged between the jaw bracket and the rotating shaft; the ratchet mechanism comprises a plurality of ratchets which are sequentially arranged along the axial direction of the rotating shaft and also comprises a stop piece which is matched with the ratchets; the stop piece is telescopically arranged in the jaw bracket;
when the ratchet is matched with the stop piece, the jaw support body can move towards a first direction relative to the jaw support seat; when the ratchet wheel and the stop piece are arranged in a staggered mode, the jaw support body can move towards the second direction relative to the jaw support seat.
Preferably, the outer surface of the stop piece is sleeved with an elastic piece; one end of the elastic piece is abutted to the jaw support seat, the other end of the elastic piece is abutted to a limiting ring arranged on the stop piece, and the elastic piece is provided with a driving force for driving the stop piece to extend towards the ratchet.
As a preferred scheme, a mounting hole is formed in the jaw bracket and perpendicular to the rotating shaft, a limiting piece is arranged in the mounting hole, and a limiting hole is formed in the limiting piece; the stop piece is arranged in the limiting hole in a sliding and penetrating mode.
Preferably, the stop piece is provided with a clamping part clamped with the ratchet and a driving part penetrating through the elastic part; and an abutting surface is formed between the clamping part and the driving part and is abutted against the inside of the limiting hole.
Preferably, the method further comprises the following steps: the abutting plate is connected with one end of the limiting piece, which is far away from the rotating shaft; an installation cavity is formed between the abutting plate and the limiting piece; the elastic piece is arranged in the mounting cavity, and one end of the elastic piece is abutted to the abutting plate.
Preferably, a circumferential limiting component is arranged between the rotating shaft and the jaw bracket.
As preferred scheme, the spacing subassembly in circumference includes:
the limiting groove is at least provided with two limiting grooves; the limiting groove is formed in the outer wall of the rotating shaft and extends in the axial direction of the rotating shaft;
the limiting column is arranged in the jaw bracket in a telescopic manner; the limiting column is provided with a limiting part extending into the limiting groove.
As the preferred scheme, the limiting column is a ball plunger.
Preferably, the jaw support body is connected with the rotating shaft through a connecting screw.
Preferably, the inside of the rotating shaft is configured into a cavity; one end of the cavity close to the jaw support body is provided with an annular bulge extending towards the axis; one end of the connecting screw is connected with the annular bulge in an abutting mode, and the other end of the connecting screw is connected with the jaw support body.
The technical scheme of the utility model has the following advantages:
1. the utility model provides a jaw support lifting device for oral CT, comprising: the jaw support comprises a jaw support body, a rotating shaft and a jaw support seat; a ratchet mechanism is arranged between the jaw bracket and the rotating shaft and can realize one-way check, so that when the rotating shaft is pulled, the height of the jaw support body can be adjusted in the first direction, and the jaw support can be quickly realized; when the adjustment is needed to be carried out in the second direction, the ratchet wheel and the stop piece are arranged in a staggered mode, the check function of the ratchet wheel mechanism is eliminated, and the adjustment is convenient and fast.
2. The utility model provides a jaw support lifting device for oral CT, wherein an elastic part is arranged on the outer surface of a stop sheet; automatic retraction of the stop tab into the ratchet is enabled.
3. According to the jaw support lifting device for the oral CT, the limit piece is arranged to limit the moving path of the stop piece, so that the stop piece cannot deviate and can accurately enter the ratchet.
4. According to the jaw support lifting device for oral CT provided by the utility model, a circumferential limiting component is arranged between the rotating shaft and the jaw support; when pivot and jaw support seat are taking place the ascending relative motion of vertical direction, through the setting of the spacing subassembly of circumference, can prevent the pivot with take place relative rotation between the jaw support seat in the horizontal direction.
5. According to the jaw support lifting device for the oral CT, the jaw support body is connected with the rotating shaft through the connecting screw, so that the jaw support lifting device is convenient to detach and install and is convenient to replace.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic perspective view of a jaw support lifting device for oral CT according to the present invention.
Fig. 2 is a plan view of the jaw support lifter for oral CT according to the present invention.
Fig. 3 is a sectional view taken along line a-a of fig. 2.
FIG. 4 is a top view of the jaw receptacle of the present invention.
Fig. 5 is a sectional view taken along line B-B in fig. 4.
Fig. 6 is a schematic perspective view of the stopper of the present invention.
FIG. 7 is a schematic view of the connection structure of the locking pieces of the present invention.
Fig. 8 is a schematic structural view of the rotating shaft of the present invention.
Description of reference numerals:
1. a jaw support body; 2. a rotating shaft; 3. a jaw holder; 4. a ratchet; 5. a stopper piece; 6. mounting holes; 7. a limiting member; 8. mounting a plate; 9. a butt joint plate; 10. a limiting ring; 11. an elastic member; 12. a limiting groove; 13. a limiting column; 14. an annular projection; 15. a connecting screw; 16. a clamping part; 17. a drive section; 18. a contact surface.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, the jaw support lifting device for oral CT according to the present embodiment includes: the jaw support comprises a jaw support body 1, a rotating shaft 2 and a jaw support seat 3; the rotating shaft 2 can drive the jaw support body 1 to move relative to the jaw support seat 3, so that the height of the jaw support body 1 can be adjusted, the head of a patient can be supported at different positions as required, effective fixation is carried out, and an image shooting area is effective.
Further, in order to adjust the height of the jaw support body 1, a plurality of thin ratchets 4 are sequentially and adjacently arranged on the side wall of the rotating shaft 2, and the distance between every two adjacent ratchets 4 is the minimum height of the jaw support body 1, which can be changed once.
As shown in fig. 2 and 3, a stop piece 5 matched with the ratchet 4 is arranged inside the jaw bracket 3, and the stop piece 5 is telescopically arranged inside the jaw bracket 3; the stop piece 5 is provided with a clamping part 16 which extends out of the jaw bracket 3 and is clamped with the ratchet 4; when the clamping portion 16 of the stop piece 5 is clamped in the ratchet 4, the rotating shaft 2 and the jaw holder 3 are relatively fixed, and a force in a first direction can be applied to the rotating shaft 2 to realize that the rotating shaft 2 moves in the first direction relative to the jaw holder 3, wherein the first direction can be upward or downward, and the specific selection is determined by the opening direction of the ratchet 4; when the clamping part 16 of the stop piece 5 and the ratchet 4 are arranged in a staggered manner, the rotating shaft 2 can move towards a second direction relative to the jaw bracket 3.
As shown in fig. 4 and 5, the jaw bracket 3 is provided with an installation hole 6, and the installation hole 6 is arranged perpendicular to the rotating shaft 2; a limiting piece 7 is arranged in the mounting hole 6, a limiting hole is formed in the limiting piece 7, and the stopping piece is slidably arranged in the limiting hole in a penetrating manner;
as shown in fig. 6, one end of the stopper 5 is cylindrical, and in order to facilitate the engagement with the ratchet 4, the engagement portion 16 of the stopper 5 is rectangular; an abutment surface 18 is formed at the cylindrical and rectangular junction of the stopper piece 5;
as shown in fig. 7, a mounting plate 8 extending towards two sides is disposed on one side of the limiting member 7, and is used for fixing with the jaw holder 3; a limiting hole is formed in the limiting piece 7, and the shape of the limiting hole is matched with that of the stop piece 5; the abutting surface 18 of the stop piece 5 abuts against the inside of the stopper 7, thereby limiting the extending distance of the stop piece 5.
One end, far away from the rotating shaft 2, of the limiting piece 7 is connected with a butting plate 9, the butting plate 9 is of a U-shaped structure, and an installation cavity is formed between the butting plate 9 and the limiting piece 7; one end of the stop piece 5, which is far away from the clamping part 16, is provided with a driving part 17, and the driving part 17 is arranged in the mounting cavity; one end of the driving part 17 of the stop piece 5, which is close to the limiting part 7, is provided with a limiting ring 10 arranged around the stop piece 5; an elastic piece 11 is sleeved on the mounting part of the stop piece 5, one end of the elastic piece 11 is abutted with the limiting ring 10, and the other end of the elastic piece 11 is abutted with the abutting plate 9; the elastic member 11 is in a compressed state, and has a driving force in a direction to drive the stopper piece 5 toward the ratchet 4.
Preferably, the rotating shaft 2 and the jaw bracket 3 can be reversely stopped downwards through the ratchet 4 and the stop piece 5, and the multi-stage height adjustment of the jaw support body 1 and the jaw bracket 3 can be realized by pulling the rotating shaft 2 upwards. When the rotating shaft 2 is adjusted downwards relative to the jaw bracket 3, the rotating shaft 2 needs to be rotated along the axis, and in the rotating process, the stop piece 5 overcomes the driving of the elastic piece 11 and gradually retracts into the limiting piece 7, namely, the stop piece 5 is pulled out from the ratchet 4, so that the rotating shaft 2 can move downwards relative to the jaw bracket 3 to reach a specified position.
As shown in fig. 8, a circumferential limit structure is provided to prevent synchronous rotation when the rotating shaft 2 moves in the axial direction relative to the jaw holder 3; specifically, the outer wall of the rotating shaft 2 is provided with at least two limiting grooves 12 and a telescopic limiting column 13 arranged in the jaw bracket 3; the number of the limiting grooves 12 is three, and the three limiting grooves 12 are arranged in parallel and extend along the axial direction of the rotating shaft 2; the limiting column 13 can be a ball plunger, one end of the ball plunger is fixed with the jaw bracket 3, and a ball head at the other end extends into the limiting groove 12 to form a limiting part.
When the stop piece 5 is clamped with the ratchet 4, the ball head of the ball head plunger extends into the middle limiting groove 12, so that the rotating shaft 2 cannot rotate when moving in the axial direction; when the rotating shaft 2 is rotated, the ball plunger is clamped into other limiting grooves 12, and the rotating shaft 2 cannot rotate when moving downwards along the axial direction.
As shown in fig. 3, the inside of the rotating shaft 2 is configured into a cavity, and an annular bulge 14 which extends towards the axis is arranged at one end of the cavity close to the jaw support body 1; annular bulge 14 encloses to close and forms mounting hole 6, and connecting screw 15 passes mounting hole 6, one end with annular bulge 14 butt, the other end holds in the palm body 1 threaded connection with the jaw, realizes that the jaw holds in the palm body 1 and is connected with pivot 2.
Method of use and principle
When the jaw support is used, the jaw support body 1 is directly pulled upwards, the rotating shaft 2 and the jaw support seat 3 are moved and clamped through the matching of the ratchet 4 and the stop sheet 5, and the jaw support body 1 can be pulled and fixed to any position; when the jaw support body 1 needs to be adjusted downwards, the rotating shaft 2 is rotated, the ball plunger retracts and then enters other limiting grooves 12, meanwhile, the stop piece 5 rotates out of the ratchet 4, automatically moves downwards to a specified position under the action of gravity of the jaw support body 1, the rotating shaft 2 is rotated again, and the stop piece 5 is clamped into the ratchet 4 again after the rotation is corrected. The whole structure is small in size, simple and reliable in structure, and convenient operation can be achieved by one hand.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.
Claims (10)
1. The utility model provides an oral cavity CT holds in palm elevating gear with jaw, its characterized in that includes:
the jaw support comprises a jaw support body (1) and a jaw support body, wherein the jaw support body is provided with a supporting surface for supporting;
one end of the rotating shaft (2) is connected with the jaw support body (1);
the jaw bracket (3) is rotatably connected with the rotating shaft (2); a ratchet mechanism is arranged between the jaw bracket (3) and the rotating shaft (2); the ratchet mechanism comprises a plurality of ratchets (4) which are sequentially arranged along the axial direction of the rotating shaft (2), and a stop piece (5) which is matched with the ratchets (4); the stop piece (5) is arranged in the jaw bracket (3) in a telescopic way;
when the ratchet (4) is matched with the stop piece (5), the jaw support body (1) can move towards a first direction relative to the jaw bracket (3); when the ratchet wheel and the stop piece (5) are arranged in a staggered mode, the jaw support body (1) can move towards the second direction relative to the jaw support seat (3).
2. The jaw support lifting device for oral CT according to claim 1,
an elastic piece (11) is sleeved on the outer surface of the stop piece (5); one end of the elastic piece (11) is abutted with the jaw bracket (3), the other end of the elastic piece is abutted with a limiting ring (10) arranged on the stop piece (5), and the elastic piece (11) is provided with a driving force for driving the stop piece (5) to extend towards the ratchet (4).
3. The jaw support lifting device for oral cavity CT according to claim 2, characterized in that the jaw support (3) has a mounting hole (6) vertically opened to the rotating shaft (2), a limiting member (7) is disposed in the mounting hole (6), and a limiting hole is opened in the limiting member (7); the stop piece (5) is arranged in the limiting hole in a sliding and penetrating mode.
4. The jaw support lifting device for oral CT according to claim 3, further comprising:
the abutting plate (9) is connected with one end, far away from the rotating shaft (2), of the limiting piece (7); an installation cavity is formed between the abutting plate (9) and the limiting piece (7); the elastic piece (11) is arranged in the mounting cavity, and one end of the elastic piece is abutted against the abutting plate (9).
5. The jaw support lifting device for oral CT according to claim 4, characterized in that the stop piece (5) has a clamping part (16) clamped with the ratchet (4) and a driving part (17) arranged in the elastic part (11) in a penetrating way; an abutting surface (18) is formed between the clamping portion (16) and the driving portion (17), and the abutting surface (18) abuts against the inside of the limiting hole.
6. The jaw support lifting device for oral CT according to any one of claims 1 to 5, characterized in that a circumferential limit component is arranged between the rotating shaft (2) and the jaw support (3).
7. The jaw support lifting device for oral CT according to claim 6, wherein the circumferential limiting component comprises:
the limiting grooves (12) are at least provided with two limiting grooves; the limiting groove (12) is formed in the outer wall of the rotating shaft (2) and extends in the axial direction of the rotating shaft (2);
the limiting column (13) is arranged in the jaw bracket (3) in a telescopic manner; the limiting column (13) is provided with a limiting part extending into the limiting groove (12).
8. The jaw support lifting device for oral CT according to claim 7, characterized in that the limiting column (13) is a ball plunger.
9. The jaw support lifting device for oral CT according to claim 1, wherein the jaw support body (1) is connected to the rotating shaft (2) by a connecting screw (15).
10. The jaw support lifting device for oral CT according to claim 9, characterized in that the inside of the rotating shaft (2) is configured as a cavity; one end of the cavity close to the jaw support body (1) is provided with an annular bulge (14) extending towards the axis; one end of the connecting screw (15) is abutted against the annular bulge (14), and the other end of the connecting screw is connected with the jaw support body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123434268.0U CN216933260U (en) | 2021-12-30 | 2021-12-30 | Jaw support lifting device for oral CT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123434268.0U CN216933260U (en) | 2021-12-30 | 2021-12-30 | Jaw support lifting device for oral CT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216933260U true CN216933260U (en) | 2022-07-12 |
Family
ID=82315351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123434268.0U Active CN216933260U (en) | 2021-12-30 | 2021-12-30 | Jaw support lifting device for oral CT |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216933260U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115944316A (en) * | 2022-12-30 | 2023-04-11 | 北京朗视仪器股份有限公司 | Lower jaw strutting arrangement for oral cavity CT |
-
2021
- 2021-12-30 CN CN202123434268.0U patent/CN216933260U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115944316A (en) * | 2022-12-30 | 2023-04-11 | 北京朗视仪器股份有限公司 | Lower jaw strutting arrangement for oral cavity CT |
| CN115944316B (en) * | 2022-12-30 | 2023-10-20 | 北京朗视仪器股份有限公司 | Mandible supporting device for oral cavity CT |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216933260U (en) | Jaw support lifting device for oral CT | |
| CN212691282U (en) | Environment-friendly real-time air quality monitoring and prompting equipment for community | |
| CN211315542U (en) | Face recognition device capable of being adjusted up and down according to different heights | |
| CN214474212U (en) | Microscope capable of preventing object stage from sliding downwards | |
| CN218767041U (en) | Lightning protection detection device convenient to erection joint | |
| CN112338858A (en) | Dental low-speed mobile phone disassembling device | |
| CN114343697A (en) | Manual rotary jaw support for oral cavity CT | |
| CN212305443U (en) | Adjustable camera device | |
| CN208117781U (en) | A kind of spherical surface frame assembling jig | |
| CN212734818U (en) | Welding roll-over stand of aerogenerator frame | |
| CN218034924U (en) | Concentric detection device of optical lens cone | |
| CN213118297U (en) | Projection device for video analysis | |
| CN211059453U (en) | Pneumatic actuator for balanced pushing | |
| CN217697808U (en) | Telescopic adjustable cantilever type lower limb rehabilitation training device | |
| CN217784640U (en) | Fixing device for surface targeting molecule mounting of liposome | |
| CN216521307U (en) | Lighting device for assembling microelectronic device | |
| CN217667501U (en) | Upper and lower module curb plate upset welding frock | |
| CN218866506U (en) | High-angle gesture recognition device based on binocular vision | |
| CN217587723U (en) | Supporting rod lifting device for optical experiment | |
| CN218575382U (en) | Adjustable double-tube welding table | |
| CN215000582U (en) | Tripod with horizontal supporting center shaft and adjustable shooting height | |
| CN217708318U (en) | Plug cord coiling mechanism | |
| CN212601527U (en) | Assembling jig | |
| CN216377188U (en) | New energy automobile motor rotor hoist device | |
| CN216706610U (en) | Inserting sheet mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |