阅读说明：本技术 用于口腔cbct的定位装置和口腔cbct (A positioner and oral cavity CBCT for oral cavity CBCT ) 是由 徐明峰 于 2020-06-16 设计创作，主要内容包括：本发明公开了一种用于口腔CBCT的定位装置和口腔CBCT,包括：基壳,所述基壳设有限位导向槽；调节旋钮,所述调节旋钮安装于所述基壳且设有调节杆,所述调节杆上设有定位件；导向组件,所述导向组件设在所述限位导向槽内且与所述调节杆螺纹配合,所述定位件用于限制所述调节杆在其轴向上的位置以将所述调节杆的旋转运动转换成所述导向组件在所述限位导向槽内的移动；定位基体,所述定位基体与所述导向组件相连,所述调节旋钮和所述定位基体分别位于所述导向组件的两端。根据本发明的用于口腔CBCT的定位装置,可以实现头部俯仰角度的准确调整,为患者在拍摄过程中保持静止稳定提供了简单、易操作的物理支撑。(The invention discloses a positioning device for oral CBCT and the oral CBCT, comprising: the base shell is provided with a limiting guide groove; the adjusting knob is mounted on the base shell and provided with an adjusting rod, and a positioning piece is arranged on the adjusting rod; the positioning piece is used for limiting the position of the adjusting rod in the axial direction so as to convert the rotary motion of the adjusting rod into the movement of the guide assembly in the limiting guide groove; the positioning base body is connected with the guide assembly, and the adjusting knob and the positioning base body are respectively positioned at two ends of the guide assembly. According to the positioning device for the oral CBCT, the pitching angle of the head can be accurately adjusted, and a simple and easy-to-operate physical support is provided for keeping a patient static and stable in the shooting process.)

1. A positioning device for oral CBCT, comprising:

the base shell is provided with a limiting guide groove;

the adjusting knob is mounted on the base shell and provided with an adjusting rod, and a positioning piece is arranged on the adjusting rod;

the positioning piece is used for limiting the position of the adjusting rod in the axial direction so as to convert the rotary motion of the adjusting rod into the movement of the guide assembly in the limiting guide groove;

the positioning base body is connected with the guide assembly, and the adjusting knob and the positioning base body are respectively positioned at two ends of the guide assembly.

2. The positioning device for oral CBCT according to claim 1, wherein one of the base shell and the guide assembly is provided with a guide slot and the other is provided with a guide protrusion, the guide protrusion cooperating with the guide slot.

3. The positioning device for the oral CBCT as recited in claim 1, wherein the guide assembly is provided with an avoidance space for avoiding the adjustment rod.

4. The positioning device for oral CBCT according to claim 1, further comprising:

the guide shaft extends along the vertical direction, and the base shell is movably arranged on the guide shaft.

5. The positioning device for oral CBCT according to claim 1, wherein the positioning base is rotatable relative to the guide assembly, and a damping member is provided between the positioning base and the guide assembly to fix the position of the positioning base.

6. The positioning device for the oral CBCT according to any of the claims 1 to 5, wherein an elastic member is arranged in the limit guide groove, and the elastic member is respectively connected with the base shell and the guide assembly to press the thread of the adjusting rod and the thread of the guide assembly towards each other.

7. The positioning device for CBCT in the oral cavity as claimed in claim 6, wherein the inner side wall of the limiting guide groove is provided with a positioning column, the guide assembly is provided with a stop table, and two ends of the elastic member are respectively sleeved on the positioning column and the stop table.

8. The positioning device for oral cavity CBCT as claimed in claim 7, wherein the positioning base is located at the front end of the guiding component, the stopping table is located at the rear end of the guiding component, the positioning column is located in front of the stopping table, the front end and the rear end of the limiting guiding groove are respectively open, the base housing is provided with a cover plate for covering the rear end of the limiting guiding groove, and the adjusting rod is inserted into the cover plate.

9. The positioning device for oral CBCT according to claim 8, wherein the rear surface of the positioning member abuts against the front surface of the cover plate, and the front end surface of the adjusting knob abuts against the rear surface of the cover plate.

10. The positioning apparatus for oral CBCT according to claim 7, wherein said guide assembly comprises:

the guide block is in threaded fit with the adjusting rod;

the pressing plate is installed on the guide block, and the stop table is arranged on the pressing plate.

11. An oral CBCT comprising a positioning device for an oral CBCT according to any of claims 1 to 10.

Technical Field

The invention relates to the technical field of oral CBCT, in particular to a positioning device for oral CBCT and the oral CBCT with the positioning device for oral CBCT.

Background

In three-in-one (i.e., CT, panoramic, lateral) oral CBCT, both CT and panoramic acquire image data by rotating the X-ray source and X-ray sensor on either side of the C-arm around the patient's head under the head positioning device. In order to obtain an excellent image, the patient's head must remain in the acquisition process, i.e. not moved during the X-ray emission.

On the one hand, it is easy for the patient to remain stationary if the patient feels comfortable, and more likely to move if the patient is uncomfortable or under pressure and unsupported conditions; on the other hand, the cranial positioning devices should be as transparent to X-rays as possible so that they do not create artifacts that can reduce the diagnostic effectiveness of the radiographic image, which affects the choice of materials and material thicknesses, such as the choice of non-metallic materials with good transmission, while also ensuring that the cranial positioning device is sufficiently rigid to provide displacement-free positioning and support to the patient. In addition, the cranial positioning device should be able to accommodate any patient from a pediatric patient, adult patient, and therefore need to have a wide degree of freedom of adjustment to accommodate the physiological anatomical dimensions of different patients.

The skull positioning device in the related art has an insufficiently firm structure, cannot ensure the frankfurt plane to be horizontal (namely the head is tilted forwards and backwards), and has no support for the forehead. And some heads have front and back supporting structures, and are not clamped left and right or locked by soft belts, so that the fixing mode has the disadvantages of complex operation and low efficiency, and a patient needs to keep still for a long time.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the positioning device for the oral CBCT can realize the adjustment and the support of the head pitch angle, and can realize the triangular clamp fixation of the head by matching with a left clamping mechanism and a right clamping mechanism.

The invention also provides the oral CBCT with the positioning device for the oral CBCT.

According to a first aspect of the invention, a positioning device for oral CBCT comprises: the base shell is provided with a limiting guide groove; the adjusting knob is mounted on the base shell and provided with an adjusting rod, and a positioning piece is arranged on the adjusting rod; the positioning piece is used for limiting the position of the adjusting rod in the axial direction so as to convert the rotary motion of the adjusting rod into the movement of the guide assembly in the limiting guide groove; the positioning base body is connected with the guide assembly, and the adjusting knob and the positioning base body are respectively positioned at two ends of the guide assembly.

According to the positioning device for the oral CBCT, provided by the embodiment of the invention, the pitching angle of the head can be accurately adjusted, and a simple and easy-to-operate physical support is provided for keeping a patient static and stable in the shooting process.

In addition, the positioning device for oral cavity CBCT according to the embodiment of the invention has the following additional technical characteristics:

according to some embodiments of the invention, one of the base shell and the guide assembly is provided with a guide slot and the other is provided with a guide projection, the guide projection cooperating with the guide slot.

According to some embodiments of the invention, the guide assembly is provided with an avoidance space for avoiding the adjustment bar.

According to some embodiments of the invention, the positioning device for oral CBCT further comprises: the guide shaft extends along the vertical direction, and the base shell is movably arranged on the guide shaft.

According to some embodiments of the invention, the positioning base is rotatable relative to the guide assembly, and a damping member is provided between the positioning base and the guide assembly to fix the position of the positioning base.

According to some embodiments of the present invention, an elastic member is provided in the limit guide groove, and the elastic member is coupled to the base housing and the guide assembly, respectively, to press the screw thread of the adjustment lever and the screw thread of the guide assembly toward each other.

In some embodiments of the present invention, a positioning column is disposed on an inner side wall of the limiting guide groove, the guide assembly is provided with a stop table, and two ends of the elastic member are respectively sleeved on the positioning column and the stop table.

In some embodiments of the invention, the positioning base is located at the front end of the guide assembly, the stopping table is arranged at the rear end of the guide assembly, the positioning column is located in front of the stopping table, the front end and the rear end of the limiting guide groove are respectively open, the base shell is provided with a cover plate for covering the rear end of the limiting guide groove, and the adjusting rod is arranged through the cover plate.

In some embodiments of the present invention, a rear surface of the positioning element abuts against a front surface of the cover plate, and a front end surface of the adjusting knob abuts against a rear surface of the cover plate.

In some embodiments of the invention, the guide assembly comprises: the guide block is in threaded fit with the adjusting rod; the pressing plate is installed on the guide block, and the stop table is arranged on the pressing plate.

The oral cavity CBCT according to the second aspect embodiment of the present invention comprises the positioning device for oral cavity CBCT according to the first aspect embodiment of the present invention.

According to the oral CBCT disclosed by the embodiment of the invention, the head pitch angle can be accurately adjusted by using the positioning device for the oral CBCT, and a simple and easy-to-operate physical support is provided for a patient to keep static and stable in the shooting process.

Additional aspects and advantages of the invention 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 invention.

Drawings

FIG. 1 is a perspective view of a positioning device for oral CBCT according to an embodiment of the present invention;

FIG. 2 is an exploded view of a positioning device for oral CBCT according to an embodiment of the present invention;

FIG. 3 is a front view of a positioning device for oral CBCT according to an embodiment of the present invention;

FIG. 4 is a right side view of a positioning device for oral CBCT according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view of a positioning device for oral CBCT according to an embodiment of the present invention;

FIG. 6 is an exploded view of a steering assembly according to an embodiment of the present invention;

FIG. 7 is a perspective view of a base housing according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a base housing according to an embodiment of the present invention.

Reference numerals:

the positioning device 10 for the oral CBCT, the damping piece 11, the screw 12, the copper nut 13, the elastic piece 14, the base shell 100, the limit guide groove 101, the guide protrusion 102, the positioning column 103, the cover plate 104, the deformation groove 105, the adjusting knob 200, the adjusting rod 201, the positioning piece 202, the guide assembly 300, the guide groove 301, the avoiding space 302, the stopping table 303, the guide block 310, the guide nut 311, the pressing plate 320, the positioning base 400, the soft cushion 401 and the guide shaft 500.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

A positioning device 10 for oral CBCT according to an embodiment of the first aspect of the present invention is described below with reference to the accompanying drawings.

As shown in fig. 1-8, a positioning device 10 for oral CBCT according to an embodiment of the present invention includes: base housing 100, adjustment knob 200, guide assembly 300, and positioning base 400.

Specifically, the base housing 100 is provided with a stopper guide groove 101 extending in the front-rear direction. The adjusting knob 200 is installed on the base housing 100, and the adjusting knob 200 is provided with an adjusting lever 201, and the adjusting lever 201 is provided with a positioning member 202. The guide assembly 300 is disposed in the limit guide groove 101, the guide assembly 300 is in threaded engagement with the adjustment rod 201, and the positioning member 202 is used for limiting the position of the adjustment rod 201 in the axial direction (i.e., the front-back direction) of the adjustment rod 201, so as to convert the rotational movement of the adjustment rod 201 into the movement of the guide assembly 300 in the limit guide groove 101. The positioning base 400 is connected to the guide assembly 300, and the adjustment knob 200 and the positioning base 400 are respectively located at front and rear ends of the guide assembly 300.

According to the positioning device 10 for the oral CBCT, provided by the embodiment of the invention, the pitching angle of the head can be accurately adjusted, and a simple and easy-to-operate physical support is provided for a patient to keep static and stable in the shooting process.

According to some embodiments of the present invention, as shown in fig. 5 and 6, one of the base housing 100 and the guide assembly 300 is provided with the guide groove 301 and the other is provided with the guide protrusion 102, and the guide protrusion 102 is engaged with the guide groove 301, so that the guide assembly 300 can be guided to smoothly and smoothly slide in the limit guide groove 101. For example, two guide grooves 301 are respectively formed on the left and right side walls of the guide assembly 300, and two guide protrusions 102 are respectively formed on the left and right side walls of the limit guide groove 101, so that the movement is more stable and smooth. Of course, the guide projection 102 may be provided on the guide member 300 and the guide groove 301 may be provided on the base housing 100.

According to some embodiments of the present invention, as shown in fig. 5, the guide assembly 300 is provided with an avoidance space 302 for avoiding the adjustment rod 201, so that the operation is more convenient.

According to some embodiments of the present invention, as shown in fig. 1-4, the positioning device 10 for oral CBCT further comprises: the guide shaft 500 extends in the vertical direction, and the base housing 100 is movably provided on the guide shaft 500. In this way, the height is freely adjustable to adapt to the physiological anatomical dimensions of different patients, so that the formed multi-freedom adjusting mechanism can adapt to the head shapes and the head dimensions of different patients. For example, the guide shafts 500 may be two, and the two guide shafts 500 are respectively located at the left and right sides of the base housing 100, so that the movement is more stable and smooth.

According to some embodiments of the present invention, as shown in fig. 5 and 6, the positioning base 400 is rotatable with respect to the guide assembly 300, and a damping member 11 is provided between the positioning base 400 and the guide assembly 300 to fix the position of the positioning base 400. Thus, the positioning base 400 has a rotational degree of freedom, can swing up and down at an angle with respect to the hinge center, and can hover freely. For example, both sides of the positioning base 400 are locked with copper nuts 13 embedded in the guide assembly 300 by screws 12, respectively, and pre-compress the damping members 11 to form rotational damping, wherein the damping members 11 may be elastic friction pads.

According to some embodiments of the present invention, as shown in fig. 5, the limit guide groove 101 is provided therein with an elastic member 14, and the elastic member 14 is respectively connected to the base housing 100 and the guide assembly 300 to press the screw thread of the adjustment lever 201 and the screw thread of the guide assembly 300 toward each other, i.e., the elastic member 14 is always in a compressed state, so that the screw gap is eliminated, and the texture thereof is improved. For example, the elastic member 14 is a spring, the elastic member 14 may be two, and the two elastic members 14 are respectively located at the left and right sides of the guide assembly 300, so that the structure is relatively firm.

In some embodiments of the present invention, as shown in fig. 5, the inner sidewall of the position-limiting guide groove 101 is provided with a positioning column 103, the guide assembly 300 is provided with a stopping table 303, and two ends of the elastic member 14 are respectively sleeved on the positioning column 103 and the stopping table 303, so that the assembly is easy and the structure is more reliable. For example, the positioning column 103 is formed on the guide projection 102, and the elastic member 14 is fitted in the guide groove 301, so that the structure is compact and the reliability is high.

In some embodiments of the present invention, as shown in fig. 5, the positioning base 400 is located at the front end of the guide assembly 300, the stopping table 303 is located at the rear end of the guide assembly 300, the positioning column 103 is located in front of the stopping table 303, the front end and the rear end of the limit guide groove 101 are respectively open, the base housing 100 is provided with a cover plate 104 for covering the rear end of the limit guide groove 101, and the adjusting rod 201 is inserted through the cover plate 104. Therefore, the assembly is convenient, and the structure is compact.

In some embodiments of the present invention, as shown in fig. 5, the rear surface of the positioning member 202 abuts against the front surface of the cover plate 104, and the front end surface of the adjustment knob 200 abuts against the rear surface of the cover plate 104, thereby limiting the forward and backward movement of the adjustment knob 200. For example, the positioning member 202 is a circular washer sleeved on the adjusting rod 201.

In some embodiments of the present invention, as shown in fig. 5 and 6, the guide assembly 300 comprises: a guide block 310 and a pressure plate 320. The guide block 310 is screw-fitted with the adjustment lever 201. The pressing plate 320 is mounted on the guide block 310, and the stopper table 303 is provided on the pressing plate 320. Therefore, the structure is compact and the assembly is easy.

The positioning device 10 for oral CBCT according to one embodiment of the present invention is described in detail below with reference to the accompanying drawings.

When a patient shoots CT and panorama, the positioning device 10 which is arranged on the detection table and used for oral CBCT is needed to ensure that the patient keeps stable and static in the shooting process. The positioning device 10 for oral CBCT further comprises a chin positioning mechanism disposed below the base housing 100, the chin positioning mechanism primarily providing head support, the height of which is adjustable. The tongue-biting transverse groove of the chin positioning mechanism provides occlusion positioning for upper and lower teeth.

As shown in fig. 5, the cover plate 104 is screw-fixed to the base housing 100, and the adjustment knob 200 passes through the cover plate 104 and is axially positioned by a circular spacer, while the adjustment rod 201 of the adjustment knob 200 is engaged with a guide nut 311 embedded in the guide block 310. The middle of the base shell 100 is provided with a limit guide groove 101 which penetrates along the front-back direction, two opposite side walls of the limit guide groove 101 are provided with semi-cylindrical guide protrusions 102, and the guide protrusions 102 are matched with semi-circular guide grooves 301 on the left side wall and the right side wall of the guide block 310 to form a guide pair which moves linearly. Thus, turning the adjustment knob 200 effects forward and backward movement of the positioning base 400.

The coil spring is pressed between the pressing plate 320 and the positioning column 103 and is always in a compressed state, so that the thread clearance is eliminated, and the texture is improved. The positioning base body 400 has a rotational degree of freedom, the left side and the right side of the positioning base body 400 are respectively locked with the copper nuts 13 embedded into the guide blocks 310 through the screws 12, the elastic friction gaskets are pre-pressed, the rotational damping is formed, the positioning base body 400 can swing up and down at a certain angle relative to the hinge center and can hover freely, and the cushion 401 coated on the front surface of the positioning base body 400 is combined, so that the forehead of patients with different shapes can be well attached, and comfortable and uniform pressure support is provided.

The left and right side walls of the base housing 100 are provided with open arc-shaped deformation grooves 105, and the base housing 100 is an engineering plastic member, so that a certain deformation and expansion can be allowed, when the base housing 100 is matched with the guide shaft 500, a certain pre-pressure can be generated to form a frictional resistance, so that the base housing 100 can stay at any height, and simultaneously, when the base housing 100 is moved up and down, the deformation grooves 105 can be elastically deformed without being locked. According to different head lengths, the operator can freely adjust the height to ensure that the patient is in a reliable and stable supporting state. Wherein, because the density of carbon fiber pipe is little, the rigidity is good, and non-deformable, and X ray penetrability is good, guiding axle 500 can be carbon fiber pipe, and carbon fiber pipe can form complete skull fixing device through fixed pipe and base plate cooperation.

According to the positioning device 10 for the oral CBCT, provided by the embodiment of the invention, the pitching angle of the head can be accurately adjusted, a simple and easily-operated physical support is provided for keeping a patient stationary and stable in the shooting process, and meanwhile, a multi-freedom adjusting mechanism can adapt to the heads of patients with different shapes and sizes.

The oral cavity CBCT according to the second aspect of the present invention comprises the positioning device 10 for oral cavity CBCT according to the first aspect of the present invention.

According to the oral CBCT disclosed by the embodiment of the invention, the head pitch angle can be accurately adjusted by using the positioning device 10 for the oral CBCT, and a simple and easy-to-operate physical support is provided for keeping a patient static and stable in the shooting process.

Other configurations and operations of oral CBCTs according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, "a first feature" or "a second feature" may include one or more of the features, and the first feature "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. The first feature being "on," "over" and "above" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication 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.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "a specific embodiment," "an example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.