CN115944316B - Mandible supporting device for oral cavity CT - Google Patents
Mandible supporting device for oral cavity CT Download PDFInfo
- Publication number
- CN115944316B CN115944316B CN202211743373.9A CN202211743373A CN115944316B CN 115944316 B CN115944316 B CN 115944316B CN 202211743373 A CN202211743373 A CN 202211743373A CN 115944316 B CN115944316 B CN 115944316B
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- damping
- pin shaft
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- 210000000214 mouth Anatomy 0.000 title claims abstract description 10
- 210000004373 mandible Anatomy 0.000 title claims abstract description 8
- 238000013016 damping Methods 0.000 claims abstract description 58
- 210000003128 head Anatomy 0.000 claims description 45
- 239000002184 metal Substances 0.000 claims description 23
- 238000003756 stirring Methods 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 210000003781 tooth socket Anatomy 0.000 claims description 4
- 239000010953 base metal Substances 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 claims description 2
- 230000005484 gravity Effects 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 238000010009 beating Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 210000002455 dental arch Anatomy 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 210000001847 jaw Anatomy 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Landscapes
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
According to the mandible supporting device for oral cavity CT, the transmission of the up-and-down movement of the lifting seat adopts the mode that the damping rack and the damping gear are meshed with each other, when the lifting seat is naturally descended by gravity, the descending speed of the lifting seat can be slowed down by the meshed damping rack and damping gear, and the lifting seat cannot instantly drop. The device provided by the utility model has the following advantages: one-hand convenient operation, upward pulling; one key realizes slow descent, and the key is released to realize position locking; the tooth shaft moves upwards, and the toggle button does not have repeated movement; the downward movement can be realized by a toggle button with one hand, and the heights of different positions are adjusted; the device has simple structure, small volume and strong reliability; simple structure and low cost.
Description
Technical Field
The utility model relates to the technical field of oral medical appliances, in particular to a mandibular supporting device for oral CT.
Background
In order to achieve a reduction in the radiation dose suffered by a person to be photographed while achieving a good photographing quality and an accurate photographing region when photographing the teeth of the person to be photographed using a vertical type X-ray photographing apparatus, it is desirable that the X-ray source, the dental arch and the imaging plate are on the same straight line, so that a cone-beam region of an appropriate dose of X-rays can be controlled to extend through the dental arch of the patient to the imaging plate.
The existing mandibular supporting device is driven by a motor, and a complex mechanism and a large volume are needed for lifting no matter the mandibular supporting device adopts a screw rod, a guide rail, a synchronous belt and other transmission mechanisms; on the other hand, the motor driving is poorer than a pure mechanical structure, and the electric control fault is easy to occur.
There are also some multilevel, manual adjustment mechanisms, but most require two-handed operation to achieve lift adjustment. For example, chinese patent publication CN202908723U discloses a mandibular supporting and positioning device, which uses a pair of clamping grooves on an adjusting upright and a positioning plugboard to realize several position positioning, and requires two hands to operate for adjustment during use.
Disclosure of Invention
The embodiment of the utility model provides a mandibular supporting device for oral CT, which is used for solving the technical problems in the prior art.
In order to achieve the above purpose, the present utility model adopts the following technical scheme.
A mandibular supporting device for oral cavity CT comprises a base body seat and a lifting seat; the lifting seat is of a vertical structure and is matched with the base body seat, and can ascend/descend relative to the base body seat; the side surface of the lifting seat is provided with a damping tooth slot which is vertically extended, a damping rack is arranged in the damping tooth slot, and ratchet bars which are vertically extended are arranged on the two sides of the damping tooth slot; the base seat is provided with a damper, the damper comprises a damping gear, the damping gear is used for being meshed with the damping rack, and when the lifting seat descends relative to the base seat, the speed of the lifting seat descending can be reduced by the meshed damping rack and the damping gear;
the base seat is also provided with a positioner, and comprises a base sheet metal and a shaft sleeve which are arranged on the base seat, wherein the base sheet metal and the shaft sleeve are mutually spaced; the locator is also provided with a pin shaft which is horizontally arranged, the pin shaft comprises a head part, a middle part and a tail part which are connected with each other, the head part is arranged in the shaft sleeve in a penetrating way, the tail part is arranged in a penetrating way through the base sheet metal, and the middle part is positioned in a spacing area between the base sheet metal and the shaft sleeve; one end of the head is provided with a limiting head for being meshed with the ratchet bar, and the middle part of the head is sleeved with a clamping ring and a reset spring;
when the driving pin shaft horizontally moves to enable the limiting head to be far away from the ratchet bar, the spring is compressed by the clamping ring and the outer side face of the base sheet metal; when the driving force applied to the pin shaft is removed, the spring can push the limiting head to be meshed with the ratchet bar through self deformation restoring force, and the lifting seat is prevented from moving downwards relative to the base seat.
Preferably, the ratchet bar comprises a plurality of ratchet teeth, the plurality of ratchet teeth are arranged adjacent to each other in sequence along the length direction of the ratchet bar, and the section of each ratchet tooth is in a right triangle;
the section of the limiting head used for being meshed with the ratchet bar is an inverted right triangle.
Preferably, the lifting seat comprises a tooth shaft and a supporting seat which are connected with each other, the ratchet bar is positioned on the side surface of the tooth shaft, and the supporting seat is positioned on the top of the ratchet bar; the lower part of the gear shaft extends into the base body seat.
Preferably, the damping rack and the gear shaft are detachably connected with each other.
Preferably, the side surface of the gear shaft is also provided with a concave chute, the bottom end of the chute is staggered with the bottom end of the gear shaft, and a limit part positioned at the bottom of the gear shaft is constructed; the mandible supporting device for the oral cavity CT is also provided with a limiting pin, the limiting pin is positioned at the bottom of the base body seat, and the end head of the limiting pin is contacted with the sliding groove; when the lifting seat ascends to enable the limiting part to prop against the limiting pin, the limiting pin can prevent the lifting seat from ascending.
Preferably, the base sheet metal comprises an upstanding tail plate; the locator also comprises a toggle block, a pin shaft guide and a spring plunger;
the two spring plungers are respectively arranged at two sides of the pin shaft guide, and one end of each spring plunger is connected with the tail plate; the pin shaft guide sleeve is sleeved on the outer side of the tail part of the pin shaft; the pin shaft guide is connected with the base metal plate in a metallographic mode; the toggle block is sleeved on the outer sides of the pin shaft guide and the spring plunger and can move along the outer side surfaces of the pin shaft guide and the spring plunger;
the end head of the tail part of the pin shaft extends out of the pin shaft guide, and the end head of the tail part of the pin shaft is also provided with a stirring pin extending radially; when stirring the piece, stir the piece and stir the round pin through the contact, drive round pin axle horizontal migration makes the lateral surface compression spring of rand and base panel beating.
According to the technical scheme provided by the embodiment of the utility model, the lifting seat of the mandible supporting device for oral cavity CT is driven by the way that the damping racks and the damping gears are meshed with each other, and when the lifting seat is naturally lowered by gravity, the descending speed of the lifting seat can be slowed down by the meshed damping racks and damping gears, so that the mandible supporting device can not fall instantly. The device provided by the utility model has the following advantages: one-hand convenient operation, upward pulling; one key realizes slow descent, and the key is released to realize position locking; the tooth shaft moves upwards, and the toggle button does not have repeated movement; the downward movement can be realized by a toggle button with one hand, and the heights of different positions are adjusted; the device has simple structure, small volume and strong reliability; simple structure and low cost.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a front sectional view of a mandibular support device for oral CT according to the present utility model;
fig. 2 is a rear view in cross section of a mandibular support device for oral CT according to the present utility model;
FIG. 3 is a top cross-sectional view of a mandibular support device for oral CT according to the present utility model;
FIG. 4 is an enlarged view of a portion of the jaw teeth of the mandibular support device for oral CT according to the present utility model when the teeth engage the spacing heads;
fig. 5 is a schematic perspective view of a mandibular support device for oral CT according to the present utility model.
In the figure:
1. tooth shaft 2, supporting seat 3, base seat 4, shaft sleeve 5, retainer ring 6, reset spring 7, pin shaft 71, limit head 8, base metal plate 9, toggle pin 10, pin shaft guide 11, spring plunger 12, damper 13, ratchet bar 131, ratchet tooth 14, damping gear 15, limit pin 16, toggle block 17 and damping rack.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
For the purpose of facilitating an understanding of the embodiments of the utility model, reference will now be made to the drawings of several specific embodiments illustrated in the drawings and in no way should be taken to limit the embodiments of the utility model.
Referring to fig. 1 to 5, the mandibular supporting device for oral CT provided by the present utility model includes a base body seat 3 and a lifting seat. The lifting seat is of a vertical structure and is matched with the base body seat 3, and can ascend/slowly descend relative to the base body seat 3. As shown in fig. 1 and 5, the side surface of the lifting seat is provided with a concave damping tooth groove which is arranged in a vertical extending way, and a damping rack 17 which is arranged in a extending way along the length direction of the damping tooth groove is arranged in the damping tooth groove. The side surface of the lifting seat is also provided with two ratchet bars 13 which are positioned at two sides of the damping tooth socket and vertically extend. The base body seat 3 is provided with a damper 12, and comprises a damping gear 14, wherein the damping gear 14 is used for being meshed with a damping rack 17, and when the lifting seat descends relative to the base body seat 3, the speed of the lifting seat descending can be reduced by the meshed damping rack 17 and the damping gear 14 (a gear-rack parameter design with a certain transmission ratio can be adopted). The top of the lifting seat is used for supporting the lower jaw.
The base body seat 3 is also provided with a locator, which comprises a base sheet metal 8 and a shaft sleeve 4 which are arranged on the base body seat 3, wherein the base sheet metal 8 and the shaft sleeve 4 are mutually provided with a space. The locator still has the round pin axle 7 that the level set up, and round pin axle 7 includes interconnect's head, middle part and afterbody, and the head sets up in the axle sleeve 4 of base member seat 3, and runs through axle sleeve 4, the afterbody runs through base panel beating 8 setting, and the middle part is located the interval region of base panel beating 8 and axle sleeve 4. One end of the head is provided with a limit head 71 which is used for unidirectional occlusion with the ratchet bar 13, and the middle part is sleeved with a clamping ring 5 and a reset spring 6.
When the drive pin 7 moves horizontally so that the spacing head 71 is away from the ratchet bar 13, the sides of the collar 5 and base sheet metal 8 can compress the spring. When the driving force applied to the pin 7 is removed, the spring can push the stopper 71 to engage with the ratchet bar 13 by its own deformation restoring force, and the elevating base is prevented from being moved downward with respect to the base 3.
In the preferred embodiment provided by the present utility model, ratchet bar 13 includes a plurality of ratchet teeth 131, and a plurality of ratchet teeth 131 are disposed adjacent to each other in sequence along the length of ratchet bar 13, as shown in fig. 4, each ratchet tooth 131 having a right triangle in cross section. Correspondingly, the cross section of the limit head 71 for being meshed with the ratchet bar 13 is in an inverted right triangle shape. When the ratchet 131 and the limit head 71 are engaged with each other, the bevel side and the lateral right-angle side of the limit head are in close contact with each other. When the elevating seat is elevated, the ratchet 131 can slide along the bevel side of the limit head 71 by its bevel side. The lateral right-angle side (i.e., the top side) of the stopper 71 itself can lock (the bottom side of) the ratchet 131, and prevent the lifting seat from moving downward relative to the base seat 3, thereby realizing the multi-stage adjustment of the height of the lifting seat.
As shown in FIG. 2, spacing head 71 mates with ratchet bar 13 on both sides, and the width of spacing head 71 is not less than the total width of ratchet bar 13, because damping rack 17 is positioned within the recessed damping tooth slot, damping rack 17 does not contact spacing head 71.
Furthermore, the sections of the ratchet 131 and the limiting head 71 are acute triangles, so that the matching pressure angle of the ratchet 131 and the pin shaft 7 is smaller than 45 degrees, and the pin shaft 7 is more firmly clamped to the gear shaft 1.
In the preferred embodiment provided by the utility model, the lifting seat comprises a tooth shaft 1 and a supporting seat 2 which are connected with each other, the ratchet bar 13 is positioned on the side surface of the tooth shaft 1, and the supporting seat 2 is positioned on the top of the ratchet bar 13. The lower part of the gear shaft 1 extends into the base body seat 3.
Further, the damping rack 17 and the ratchet 13 are detachably connected with the gear shaft 1, so that worn racks can be replaced conveniently. For example, a rack-fitting method may be adopted.
The side surface of the gear shaft 1 is also provided with a concave chute, the bottom end of the chute is staggered with the bottom end of the gear shaft 1, and a limit part positioned at the bottom of the gear shaft 1 is constructed; the mandible supporting device for the oral cavity CT is also provided with a limiting pin 15, the limiting pin 15 is positioned at the bottom of the matrix seat 3, and the end head of the limiting pin 15 is contacted with the chute; when the lifting seat rises to enable the limiting part to prop against the limiting pin 15, the limiting pin 15 can prevent the lifting seat from rising.
In the preferred embodiment provided by the utility model, the base sheet metal 8 is of an open structure comprising a horizontal base plate for fixed mounting and vertical plates standing on the front and rear sides. In this embodiment, the positioner further comprises a toggle block 16, a pin guide 10 and a spring plunger 11. The two spring plungers 11 are respectively arranged on two sides of the pin shaft guide 10, and one end of each spring plunger 11 is fixedly connected with the tail plate. The pin shaft guide 10 is sleeved on the outer side of the tail of the pin shaft 7, and the pin shaft guide 10 is connected with the base sheet metal 8. The toggle block 16 is sleeved on the outer sides of the pin shaft guide 10 and the spring plunger 11 and can move along the outer side surfaces of the pin shaft guide 10 and the spring plunger 11.
The end head of the tail part of the pin shaft 7 extends out of the pin shaft guide 10, and the end head of the tail part of the pin shaft 7 is also provided with a stirring pin 9 which extends radially; when the toggle block 16 is toggled, the toggle block 16 can move horizontally by moving and contacting the toggle pin 9, driving the pin shaft 7, so that the side surfaces of the collar 5 and the base sheet metal 8 (front vertical plate) compress the spring. The vertical plate at the tail side of the base sheet metal 8 can block the toggle pin 9, and plays a role in limiting the backward movement of the pin shaft 7.
In this embodiment, the spring plunger 11 is of a sleeve structure, and comprises a cylinder body and a core body, one end of the core body is fixedly connected with a vertical plate at the tail of the base sheet metal 8, the cylinder body is fixedly connected with a stirring block 16 through an outer side surface, the stirring block 16 is exposed towards one end of the base body seat 3, and the cylinder body and the core body can mutually and axially slide. The vertical plate at the front part of the base sheet metal 8 can play a role in stopping the reset of the spring-poking block 16, but can also play a role in stopping the reset of the spring-poking block 16 in advance by adjusting the length of the exposed end of the cylinder body. The length of the exposed end of the cylinder is set appropriately according to the length of the pin shaft 7.
In a preferred form, the top of the toggle block 16 has a protrusion for ease of operation.
The mandibular supporting device provided by the utility model has the following working principle:
as shown in fig. 1, before the operator shoots the head of the patient with CT, the operator needs to hold the head at different positions according to the difference of different people, and adjusts the height of the jaw support to further adjust the shooting position of the person, so that the image shooting area is effectively fixed.
In the embodiment provided by the utility model, tiny ratchets 131 are machined on the ratchet bar 13 of the gear shaft 1, and the distance between each ratchet is a first-level height adjustment. The shaft sleeve 4 is internally provided with a pin shaft 7, and a limit head 71 at the front end of the pin shaft 7 is matched with the ratchet 131 under the action of the return spring 6. The ratchet teeth on the gear shaft 1 are matched with the top teeth of the pin shaft 7, and under the action of a return spring, the one-way locking of the gear shaft 1 is realized (as shown in figures 1 and 4). The gear shaft 1 is pulled upwards, the pin shaft 7 is pushed back, the return spring 6 is compressed, the gear shaft 1 moves upwards by one tooth pitch, and then the limiting head 71 enters the next ratchet 131 and keeps the gear shaft 1 locked under the action of the return spring 6; the pin shaft 7 is repeatedly moved under the action of the return spring 6 by pulling up and pulling up. When the gear shaft 1 is upwards, the pressure angle of the ratchet 131 matched with the limiting head 71 is smaller than 45 degrees, and the gear shaft 1 can be directly pulled upwards, so that the height multi-stage adjustment is realized.
The center of the ratchet of the gear shaft 1 is provided with a slot, a damping rack 17 is embedded in the slot, and the tooth top of the damping rack 17 is lower than the tooth root of the ratchet 131. The damping rack 17 is always meshed with the damping gear 14, and two ends of the damping gear 14 are coaxially fixed with the damper 12. When the manual gear-pulling shaft 1 moves upwards, the pin shaft 7 moves repeatedly in the pin shaft guide 10 under the action of the return spring 6, but the toggle button 16 cannot be repeatedly fluctuated. The gear shaft 1 is pulled upwards, and the damping rack 17 is meshed with the damping gear 14, so that the damping gear 14 is driven to rotate together. When the gear shaft 1 rises to the limit position, the limit pin 15 can be contacted with the bottom of the limit groove on the gear shaft 1, so that the gear shaft 1 can not be pulled out.
As shown in fig. 3, when the gear shaft 1 needs to descend, the button 16 is shifted to the right, the button 16 moves to the right along the pin shaft guide 10, then the button 16 contacts with the shifting pin 9 to drive the shifting pin 9 and the pin shaft 7 to move to the right together, so that the pin shaft 7 is separated from the gear shaft 1, and meanwhile, the spring plunger 11 is compressed. After the pin shaft 7 is separated from the gear shaft 1, the ratchet shaft can move downwards under the action of gravity, and the gear shaft 1 can slowly descend (can not instantaneously drop) due to the fact that the damping rack 17 is always meshed with the damping gear 14. When the gear shaft descends to a designated position under the action of gravity, the toggle button 16 is released by hand, and the toggle button 16 is reset under the action of the spring plunger 11; after the toggle button 16 is reset, the pin shaft 7 is matched with the pin shaft 7 again under the action of the reset spring 6, so that the tooth shaft is static. According to the operation, the lowering process can select any needed height to make the gear shaft static.
When the gear shaft 1 descends to the lowest position, the supporting seat 2 is required to be adjusted up; the gear shaft 1 is pulled upwards by one hand and stopped at any required position, and the required height can be obtained.
The whole operation process is quick and labor-saving, and the whole process adopts single-hand operation. The whole structure is small in size and simple and reliable in structure.
In summary, according to the mandibular supporting device for oral cavity CT provided by the present utility model, the transmission of the up-and-down movement of the lifting seat adopts the manner of the inter-engagement of the damping rack and the damping gear, when the lifting seat is naturally lowered by gravity, the inter-engagement of the damping rack and the damping gear can slow down the lowering speed of the lifting seat, so that the lifting seat cannot fall down instantaneously. The device provided by the utility model has the following advantages: one-hand convenient operation, upward pulling; one key realizes slow descent, and the key is released to realize position locking; the tooth shaft moves upwards, and the toggle button does not have repeated movement; the downward movement can be realized by a toggle button with one hand, and the heights of different positions are adjusted; the device has simple structure, small volume and strong reliability; simple structure and low cost.
Those of ordinary skill in the art will appreciate that: the drawing is a schematic diagram of one embodiment and the modules or flows in the drawing are not necessarily required to practice the utility model.
From the above description of embodiments, it will be apparent to those skilled in the art that the present utility model may be implemented in software plus a necessary general hardware platform. Based on such understanding, the technical solution of the present utility model may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the embodiments or some parts of the embodiments of the present utility model.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for apparatus or system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, with reference to the description of method embodiments in part. The apparatus and system embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present utility model without undue burden.
The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.
Claims (5)
1. The mandibular supporting device for oral cavity CT is characterized by comprising a base body seat and a lifting seat; the lifting seat is of a vertical structure and is matched with the base body seat, and the lifting seat can ascend/descend relative to the base body seat; the side surface of the lifting seat is provided with a damping tooth socket which is vertically extended, a damping rack is arranged in the damping tooth socket, and ratchet bars which are vertically extended are arranged on the two sides of the damping tooth socket; the base seat is provided with a damper, and comprises a damping gear, wherein the damping gear is used for being meshed with the damping rack, and when the lifting seat descends relative to the base seat, the damping rack and the damping gear which are meshed with each other can reduce the descending speed of the lifting seat;
the base seat is also provided with a locator, and comprises a base sheet metal and a shaft sleeve which are arranged on the base seat, wherein the base sheet metal and the shaft sleeve are mutually spaced; the locator is further provided with a pin shaft which is horizontally arranged, the pin shaft comprises a head part, a middle part and a tail part which are connected with each other, the head part is arranged in the shaft sleeve in a penetrating way, the tail part is arranged in the metal plate of the base in a penetrating way, and the middle part is positioned in a spacing area between the metal plate of the base and the shaft sleeve; one end of the head is provided with a limiting head which is used for being meshed with the ratchet bar, and the middle part of the head is sleeved with a clamping ring and a reset spring;
when the pin shaft is driven to move horizontally so that the limiting head is far away from the ratchet bar, the retainer ring and the outer side surface of the base sheet metal compress the reset spring; when the driving force applied to the pin shaft is removed, the reset spring can push the limit head to be meshed with the ratchet bar through self deformation restoring force, so that the lifting seat is prevented from moving downwards relative to the base seat;
the base sheet metal comprises a vertical tail plate; the locator also comprises a toggle block, a pin shaft guide and a spring plunger;
the two spring plungers are respectively arranged at two sides of the pin shaft guide, and one end of each spring plunger is connected with the tail plate; the pin shaft guide sleeve is sleeved outside the tail part of the pin shaft; the pin shaft guide is connected with the base metal plate in a metallographic mode; the stirring block is sleeved on the outer sides of the pin shaft guide and the spring plunger and can move along the outer side surface of the pin shaft guide;
the spring plunger is of a sleeve structure and comprises a barrel body and a core body, one end of the core body is fixedly connected with a vertical plate at the tail part of the base sheet metal, the barrel body is fixedly connected with the poking block through an outer side surface, the poking block is exposed out of one end of the barrel body, which faces the base body seat, and the poking block and the barrel body can axially slide with the core body;
the end head of the tail part of the pin shaft extends out of the pin shaft guide, and the end head of the tail part of the pin shaft is also provided with a stirring pin extending radially; when stirring the stirring block, the stirring block can drive the pin shaft to horizontally move through contacting the stirring pin so that the outer side surfaces of the clamping ring and the base sheet metal compress the reset spring.
2. The mandibular support device for oral CT according to claim 1, wherein the ratchet bar includes a plurality of ratchet teeth which are arranged adjacent to each other in sequence along a length direction of the ratchet bar, and a cross section of each of the ratchet teeth is a right triangle;
the section of the limiting head used for being meshed with the ratchet bar is an inverted right triangle.
3. The mandibular support device for oral CT according to claim 1, wherein the lifting base comprises a tooth shaft and a support base connected to each other, the ratchet bar being located on a side of the tooth shaft, the support base being located on top of the ratchet bar; the lower part of the gear shaft extends into the base body seat.
4. A mandibular support device for oral CT according to claim 3, wherein the damping rack is detachably connected to the toothed shaft.
5. The mandibular support device for oral CT according to claim 3, wherein the side of the tooth shaft is further provided with a recessed chute, the bottom ends of the chute are staggered with the bottom ends of the tooth shaft, and a limit part at the bottom of the tooth shaft is configured; the mandible supporting device for the oral cavity CT is also provided with a limiting pin, the limiting pin is positioned at the bottom of the base body seat, and the end head of the limiting pin is contacted with the sliding groove; when the lifting seat ascends to enable the limiting part to prop against the limiting pin, the limiting pin can prevent the lifting seat from ascending.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211743373.9A CN115944316B (en) | 2022-12-30 | 2022-12-30 | Mandible supporting device for oral cavity CT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211743373.9A CN115944316B (en) | 2022-12-30 | 2022-12-30 | Mandible supporting device for oral cavity CT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115944316A CN115944316A (en) | 2023-04-11 |
| CN115944316B true CN115944316B (en) | 2023-10-20 |
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ID=87297235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211743373.9A Active CN115944316B (en) | 2022-12-30 | 2022-12-30 | Mandible supporting device for oral cavity CT |
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| CN211326222U (en) * | 2019-04-09 | 2020-08-25 | 李卫芹 | Department of general surgery's nursing device |
| CN211325959U (en) * | 2019-01-25 | 2020-08-25 | 卢旭 | Orthopedic limb wound first-aid fixing device |
| CN111960305A (en) * | 2020-08-07 | 2020-11-20 | 山东齐利得重工集团有限公司 | Protection device of crane |
| CN213023770U (en) * | 2018-10-18 | 2021-04-20 | 四川大学锦城学院 | Wear-type virtual reality equipment |
| CN213840316U (en) * | 2020-11-20 | 2021-07-30 | 湖南交通工程学院 | Desktop computer display with adjustable height |
| CN216933260U (en) * | 2021-12-30 | 2022-07-12 | 北京朗视仪器股份有限公司 | Jaw support lifting device for oral CT |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6942292B2 (en) * | 2003-10-29 | 2005-09-13 | Lear Corporation | Adjustable head restraint or headrest |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN213023770U (en) * | 2018-10-18 | 2021-04-20 | 四川大学锦城学院 | Wear-type virtual reality equipment |
| CN211325959U (en) * | 2019-01-25 | 2020-08-25 | 卢旭 | Orthopedic limb wound first-aid fixing device |
| CN211326222U (en) * | 2019-04-09 | 2020-08-25 | 李卫芹 | Department of general surgery's nursing device |
| CN111960305A (en) * | 2020-08-07 | 2020-11-20 | 山东齐利得重工集团有限公司 | Protection device of crane |
| CN213840316U (en) * | 2020-11-20 | 2021-07-30 | 湖南交通工程学院 | Desktop computer display with adjustable height |
| CN216933260U (en) * | 2021-12-30 | 2022-07-12 | 北京朗视仪器股份有限公司 | Jaw support lifting device for oral CT |
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