CN217659906U - Be used for oral cavity CBCT tomography head fixing device - Google Patents
Be used for oral cavity CBCT tomography head fixing device Download PDFInfo
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- CN217659906U CN217659906U CN202220304789.XU CN202220304789U CN217659906U CN 217659906 U CN217659906 U CN 217659906U CN 202220304789 U CN202220304789 U CN 202220304789U CN 217659906 U CN217659906 U CN 217659906U
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Abstract
The utility model provides a head fixing device for oral CBCT (computed tomography) tomography, which comprises a main support rod and a head fixing mechanism detachably arranged on the main support rod; the head fixing mechanism comprises an inflatable fixing head ring, the inflatable fixing head ring is connected with an inflation and deflation device, a nasal part supporting rod is vertically and slidably installed on the front side of the inflatable fixing head ring, a graduated scale is arranged on the nasal part supporting rod, a nasal part limiting block is slidably arranged at the front and back of the bottom of the nasal part supporting rod, and a nasal part limiting groove is formed in one side, close to the inflatable fixing head ring, of the nasal part limiting block; the left side plate and the right side plate of the inflatable fixed head ring are provided with ear limiting plates extending downwards, the ear limiting plates are provided with a longitudinal row of through holes, and earplugs with hard rods at the tail parts penetrate through the through holes and are inserted into the ear holes. Adopt the utility model provides a device can effectively fix patient's head when shooing oral cavity CBCT, avoids patient's head carelessly to shake head from top to bottom about as far as, improves the accuracy of shooing patient CBCT image.
Description
Technical Field
The utility model relates to an oral cavity CT scanning, concretely relates to be used for oral cavity CBCT tomography head fixing device.
Background
With the continuous development of modern medical treatment process, oral cavity radiography is an indispensable part for dental disease diagnosis, and oral cavity CBCT (Cone beam CT) examination has a wide shooting range, can observe the internal structure of a patient's tooth in a three-dimensional visual field, has a low radiation dose, and is deeply trusted by the diagnosis of a clinician. The principle of CBCT is that the X-ray generator makes a circular DR (digital projection) around the projection with a low dose (typically a bulb current around 10 ma). And then, reconstructing data obtained in the 'intersection' after digital projection for multiple times (180-360 times, different according to different products) around the projection body in a computer to further obtain a three-dimensional image. Projection data of the CBCT are two-dimensional, and a three-dimensional image is directly obtained after reconstruction. From the imaging configuration, CBCT replaces the two-dimensional fan-beam scan of conventional tomo-CT with a three-dimensional cone-beam X-ray scan. Therefore, the CBCT adopts cone beam X-ray scanning to obviously improve the utilization rate of X-rays, all original data required by reconstruction can be obtained only by rotating 360 degrees, and the acquisition speed of data can be accelerated by acquiring projection data by using a planar detector.
However, CBCT also has some use drawbacks: in the shooting process, the machine running time is longer than that of a common X-ray film, the shooting requirement on the head fixing of a patient is higher, sometimes, motion artifacts appear in the image due to the fact that the patient does not shake independently, the diagnosis of the image by a doctor can be influenced, the patient needs to shoot repeatedly, and the bad influence of the fact that the examination time for seeing a doctor is prolonged and the patient receives the contact of rays repeatedly is caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides a head fixing device for oral CBCT (cone beam computed tomography) tomography, which comprises a main support rod and a head fixing mechanism detachably arranged on the main support rod;
the head fixing mechanism comprises an inflatable fixing head ring, the inflatable fixing head ring is connected with an inflation and deflation device, a nose supporting rod is vertically and slidably mounted on the front side of the inflatable fixing head ring, a graduated scale is arranged on the nose supporting rod, a nose limiting block is slidably arranged at the bottom of the nose supporting rod back and forth, and a nose limiting groove is formed in one side, close to the inflatable fixing head ring, of the nose limiting block;
the left and right side plates of the inflatable fixed head ring are provided with ear limiting plates extending downwards, a longitudinal row of through holes are formed in the ear limiting plates, and the earplug with the hard rod at the tail part penetrates through the through holes and is inserted into the ear holes.
Furthermore, the main support rod is an electric lifting rod on the ground, a foot-operated key is arranged near the main support rod on the ground, and the foot-operated key is connected with the electric lifting rod.
Further, the inflation and deflation device is a manual inflation bag or an inflation pump.
Further, the inflatable fixed head ring comprises an annular air bag and a semi-arc-shaped air bag which is connected with the annular air bag and is bent upwards.
Furthermore, soft rubber with the nose limiting groove is arranged on one side, close to the inflatable fixed head ring, of the nose limiting block.
Furthermore, a cushion block is detachably mounted in the nose limiting groove, and a groove which is equivalent to the outer contour of the nose is formed in the cushion block.
Adopt the utility model provides a be used for oral cavity CBCT tomography head fixing device, when shooing oral cavity CBCT, can effectively fix patient's head, avoid patient's head careless about shaking head from top to bottom as far as possible, improve the accuracy of shooing patient CBCT image, make patient need not but because of image distortion and the repeated shooting that the head motion artifact brought at the shooting in-process.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic side view of a head fixing device for oral CBCT tomography provided by the present invention;
FIG. 2 is a schematic view of the inflatable fixed headpiece and the nose support rods and ear limiting plates mounted on the front side and both sides of the inflatable fixed headpiece;
FIG. 3 is a drawing of a sliding fit relationship between the nasal support bar and the nasal stop;
FIG. 4 is a schematic view of a nose stop with a nose stop slot;
fig. 5 is a schematic view of an earplug with a rigid stem at the end.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
In order to thoroughly understand the present invention, detailed steps and detailed structures will be provided in the following description so as to explain the technical solution of the present invention. The preferred embodiments of the present invention are described in detail below, however, other embodiments of the present invention are possible in addition to these detailed descriptions.
Referring to fig. 1 to 5, the present invention provides a head fixing device for oral CBCT tomography, which comprises a main support rod 1 and a head fixing mechanism 10 installed on the main support rod 1.
The head fixing mechanism 10 comprises an inflatable fixing head ring 11, the inflatable fixing head ring 11 is connected with an inflation and deflation device 12, a nose supporting rod 13 is vertically and slidably mounted on the front side of the inflatable fixing head ring 11, a graduated scale is arranged on the nose supporting rod 13, a nose limiting block 14 is slidably arranged at the bottom of the nose supporting rod 13 in a front-back manner, and a nose limiting groove 15 is formed in one side, close to the inflatable fixing head ring 11, of the nose limiting block 14. The left and right side plates of the inflatable fixed head ring 11 are provided with ear limiting plates 16 extending downwards, the ear limiting plates 16 are provided with a longitudinal row of through holes 17, and sponge earplugs 19 with hard rods 18 at the tail parts penetrate through the through holes 17 and are inserted into the ear holes.
In an alternative embodiment, the main support bar 1 is an electric lifting bar on the ground, and a foot-operated button is provided on the ground near the main support bar 1, and the foot-operated button is connected to the electric lifting bar.
In an alternative embodiment, the inflation/deflation device 12 is a manual inflation bag or an inflation pump, and the doctor inflates the inflation fixing head ring 11 by manually pressing the manual inflation bag, or inflates the inflation fixing head ring 11 by using the inflation pump.
In an alternative embodiment, the inflatable retaining crown 11 includes an annular bladder 11-1 and an upwardly curved semi-arcuate bladder 11-2 connected to the annular bladder 11-1. The annular air bag 11-1 is surrounded at the forehead, and the half-arc-shaped air bag 11-2 which is bent upwards is attached to the top of the head, so that the annular air bag 11-1 is prevented from slipping off the head due to too wide air inflation.
In an alternative embodiment, the side of the nose stop 14 adjacent the inflatable retaining nose ring 11 is provided with a soft rubber with a nose stop groove 15.
When performing CBCT tomography of the oral cavity, the following preparation work is first performed:
the patient stands at a designated position, and then the doctor steps on the foot-operated buttons on the ground to control the buttons of the electric lifting rod to adjust the height of the head fixing mechanism 10 until the inflatable fixing head ring 11 falls on the forehead of the patient, and then releases the feet. The inflatable fixed head ring 11 is inflated through the inflation and deflation device 12 in a manual or electric mode, the inflatable fixed head ring 11 is inflated after being filled with air and then is tightly sleeved on the head of a patient, and then the nasal supporting rod 13 is slid up and down and the nasal limiting blocks 14 are slid back and forth, so that the nose of the patient is clamped in the nasal limiting groove 15, the head of the patient is prevented from moving up and down, and a certain reminding effect is achieved. Then, the earplug 19 of fig. 5 is inserted into the ear hole of the patient through the through hole 17 of the ear restriction plate 16, and the hard rod 18 at the tail of the earplug 19 is inserted into the through hole 17 to prevent the head of the patient from moving left and right.
After the preparation work is finished, the doctor starts the equipment to shoot the CBCT image of the patient oral cavity. When the patient swings his head autonomously, the nose is clamped into the nose limiting groove 15, and the earplugs 19 are inserted into the left ear and the right ear, so that the patient can feel the slight swing, and the patient is reminded not to move about.
It should be noted that, the sliding between the nose support rod 13 and the head fixing mechanism 10 has a certain damping (for example, there are engaged oblique teeth between the nose support rod 13 and the head fixing mechanism 10), so that it can be ensured to hover after sliding up and down to any position, and it is avoided that the nose support rod 13 falls off, and the nose support rod 13 can also be locked by a screw. Accordingly, the nose stopper 14 and the nose support rod 13 slide through the dovetail groove and have certain damping, so that the nose stopper 14 is not easy to slide without any trouble after being pushed to contact with the nose.
Generally speaking, most of the people have different noses, and the nose limiting groove can be suitable for the nose limiting grooves 15 of the same specification, but the noses of the individual people are too small or too large, so that the nose limiting grooves 15 cannot be attached to the noses of the patients, and the better limiting and reminding effects cannot be achieved. Therefore, the cushion block with the corresponding specification can be replaced into the nose limiting groove. The cushion adopts the silica gel material, puts also difficult dropping in nasal part spacing groove 15.
The above description is directed to the preferred embodiment of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that devices and structures not described in detail are understood to be implemented in a manner common in the art; without departing from the scope of the invention, it is intended that the present invention shall not be limited to the above-described embodiments, but that the present invention shall include all the modifications and variations of the embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still fall within the protection scope of the technical solution of the present invention, where the technical entity does not depart from the content of the technical solution of the present invention.
Claims (6)
1. A head fixture for oral CBCT tomography comprising a main support bar and a head fixture removably mounted on the main support bar;
the head fixing mechanism comprises an inflatable fixing head ring, the inflatable fixing head ring is connected with an inflation and deflation device, a nose supporting rod is vertically and slidably mounted on the front side of the inflatable fixing head ring, a graduated scale is arranged on the nose supporting rod, a nose limiting block is slidably mounted at the bottom of the nose supporting rod back and forth, and a nose limiting groove is formed in one side, close to the inflatable fixing head ring, of the nose limiting block;
the left and right side plates of the inflatable fixed head ring are provided with ear limiting plates extending downwards, a longitudinal row of through holes are formed in the ear limiting plates, and the earplug with the hard rod at the tail part penetrates through the through holes and is inserted into the ear holes.
2. The oral CBCT tomography head fixture of claim 1, wherein the main support bar is a power lift bar having a ground surface, and a foot-operated button is provided on the ground surface near the main support bar, the foot-operated button being connected to the power lift bar.
3. The oral CBCT tomosynthesis head fixture of claim 1, wherein the inflation and deflation device is a manual inflation bladder or an inflation pump.
4. The apparatus of claim 1, wherein the inflatable fixed head ring comprises an annular balloon and a semi-arc balloon connected to the annular balloon and curved upward.
5. The apparatus of claim 1, wherein the nose stopper is provided with a soft rubber having the nose stopper groove at a side thereof adjacent to the inflatable fixed headring.
6. The oral CBCT tomography head fixture as claimed in claim 1 or 5, wherein the nose limiting groove is detachably mounted with a cushion block, and the cushion block is provided with a groove corresponding to the outer contour of the nose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220304789.XU CN217659906U (en) | 2022-02-15 | 2022-02-15 | Be used for oral cavity CBCT tomography head fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220304789.XU CN217659906U (en) | 2022-02-15 | 2022-02-15 | Be used for oral cavity CBCT tomography head fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217659906U true CN217659906U (en) | 2022-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220304789.XU Active CN217659906U (en) | 2022-02-15 | 2022-02-15 | Be used for oral cavity CBCT tomography head fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217659906U (en) |
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2022
- 2022-02-15 CN CN202220304789.XU patent/CN217659906U/en active Active
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