CN213551885U - Convex lens visible cursor indicator for dental film machine - Google Patents
Convex lens visible cursor indicator for dental film machine Download PDFInfo
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- CN213551885U CN213551885U CN202021791007.7U CN202021791007U CN213551885U CN 213551885 U CN213551885 U CN 213551885U CN 202021791007 U CN202021791007 U CN 202021791007U CN 213551885 U CN213551885 U CN 213551885U
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Abstract
The utility model discloses a convex lens visible cursor indicator for dental film machine belongs to oral cavity jaw face portion image technical field. The device comprises a cylindrical light column box connected to a wire shading cylinder, a visible light source, a reflector and a convex lens; the visible light source is arranged on the cylindrical inner wall surface of the light column box, the reflecting plate and the convex lens are arranged in the cylinder of the light column box, the visible light source emits visible light which is projected onto the reflecting plate, reflected to the convex lens through the reflecting plate, transmitted through the convex lens, emitted from the light outlet along the line shading cylinder, is cylindrical light beam, is parallel light and irradiates to an area to be shot in parallel. Before X-ray shooting is carried out by using a dental film machine, a position to be shot is clearly positioned by using visible light, and the light field of the visible light is the area irradiated by the X-ray. The utility model discloses simple structure is reliable, and is little to the change of existing equipment to it is obvious to the instruction in the X-ray field of vision.
Description
Technical Field
The utility model relates to an oral cavity jaw facial image technical field especially relates to a convex lens visible cursor indicator for tooth film machine.
Background
In the diagnosis and treatment of stomatology, an X-ray dental machine is a common device. X-ray dental machines are generally constructed with a bulb tube for generating X-rays, fitted with a cylindrical mask. The X-ray emitted by the bulb tube is irradiated on the face of a patient in a conical or cylindrical shape from the ray shielding cylinder, the closer the bulb tube is, the smaller the irradiation field is, and the farther the bulb tube is, the larger the irradiation field is. In clinical use, a doctor places a film on the inner face of teeth in the oral cavity of a patient, then adjusts the direction angle of the wire shielding cylinder, so that the outlet of the wire shielding cylinder is aligned with the tooth surface to be shot, and the central line of the wire shielding cylinder is vertically opposite to the central position of the film, thereby preventing the deformation of the shot tooth image and ensuring that the projection field covers all the tooth surface to be shot.
However, although the X-ray projection technique of the dental film machine is exact in principle, in practice, the X-ray projection technique only depends on the alignment of the wire shielding cylinder, and the X-ray projection technique is poor in executable degree. Because the X-ray is invisible light, it is impossible to measure and predict in actual use, and in actual operation, the executable degree of the alignment by the mask is poor, and there is no clear indication light field, so there will be great deviation in clinical practice and execution, and the lack of standardization and theoretical rigor of clinical practice is insufficient.
In addition, because the film receiving the X-ray needs to be placed in the patient's mouth, it is difficult to display the X-ray results in real time by using a digital technique. Moreover, positioning shooting can be carried out after the X-ray shooting effect is displayed in real time, and the problem of X-ray radiation quantity can also exist. Therefore, at least a disposable chemical film is still used as a photographic negative film at present.
In practice, after the film is placed in the mouth of a patient and the teeth are occluded or the lips are closed, the doctor can subjectively judge whether the center line is perpendicular to the tooth surface or the film, whether the center of the film is aligned, and whether the projection field of the X-ray accurately covers the tooth surface to be photographed, only by experience. The inspection of the shot image can only be realized by developing the negative after the actual shooting is finished, and whether the image on the negative is correct or not can be known. Moreover, if there is a discrepancy, a new radiographing may be necessary, which increases the working time and the amount of X-ray radiation to which the patient is exposed.
In particular, in X-ray apex examination of the oral jaw face, two major techniques are currently commonly employed: a split-angle line projection technique and a parallel projection technique. However, from the current standard and technical method and the current design of the dental film machine, the doctor can not accurately identify the projection field of the X-ray in the process of carrying out the dental film projection, and the analysis is as follows:
firstly, a dividing line projection technology:
in the apex X-ray radiography technology of the Chinese health industry standard (WS/T608 and 2018) oral cavity jaw face X-ray inspection operation specification (2018-05-10 and 2018-11-01) issued by the national health committee of the people's republic of China, the X-ray central line is required to be vertical to the bisector of the included angle between the long axis of the tooth to be inspected and the image receiver.
In the projection direction of the technique, the guideline recommendations are located on the body surface as follows:
a) when the upper teeth are shot, a connecting line from the upper edge of the mouth of the external auditory canal to the tip of the nose is taken as an imaginary connecting line, and the passing positions of the central line of the X-ray are respectively 1) the upper incisor is shot to pass through the tip of the nose; 2) when the upper unilateral middle incisor and the lateral incisor are projected, the middle point of the connecting line of the nose tip and the projection side nose wing is passed; 3) when the upper single cuspid tooth is shot, the lateral nasal alar is shot;
b) when the mandibular teeth are photographed, the X-ray center lines are all on an imaginary line 10mm above the inferior border of the mandibular teeth, and are then directed at the site of the examined teeth.
From the above-mentioned regulations on the projection technique of the angular bisector of the anterior teeth of the upper and lower jaws, it can be seen that these operation specifications are used to position the spatial position of the teeth in a manner of estimating and predicting by aiming at the external soft tissue body surface marks, and there is no way to accurately position the projection position, projection direction and projection angle before photographing by using the wire shielding tube of the bulb tube to roughly correspond to the body surface marks in the actual clinical operation. Such techniques undoubtedly introduce significant errors and uncertainties to the clinical images. The randomness and uncertainty of the projection fix positioning of the body surface does not really show the essence and connotation of the angular bisector technique.
Parallel projection technique for two or root tip slices
The parallel projection technology of the apex sheet is also called as a right angle technology, a long shading cylinder technology or a long focus parallel projection technology. The basic projection principle is to place the X-ray film parallel to the tooth long axis and to make the X-ray central line perpendicular to both the tooth long axis and the film. The advantage of obtaining such an image is theoretically that the dental image has a small degree of distortion with the deformation of the tooth, and when the film is placed, the film has to be moved slightly away from the target tooth in order to ensure that the film is parallel to the long axis of the tooth. Meanwhile, high voltage is adopted and a fast film is used, so that the exposure time is shortened, and the exposure is reduced. However, this method is often used in experimental projection, which is not suitable for clinical application, and requires necessary auxiliary tools for projection. The time is long, a large space in the oral cavity is needed for the dental film to be in place, and in the actual clinical operation, it can be seen that in most cases, due to the inclination of the teeth, the form and thickness factors of the peripheral soft tissues (tongue body, oral floor and palate) and the bone tissues (alveolar bone and faucial arch) and the size of the oral cavity volume, the parallel relation between the long axis of the teeth and the film cannot be formed even in the oral cavity volume, and the matching difficulty of the patient is large, so that the failure is caused. It is theoretically possible, but only partially valuable in practical clinical work.
Accordingly, those skilled in the art have sought to develop a new dental machine and kit that more precisely projects the area, reduces the extra exposure to avoid non-examination areas, and reduces the patient dose.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defects in the prior art, the technical problem to be solved in the utility model is to fix a position the degree of accuracy problem of fixed point when putting. The utility model aims at providing a convex lens visible cursor indicator for tooth film machine when using tooth film machine to make a video recording to patient's tooth, makes quick and clear-and-definite location to just treating the position of taking a picture.
In order to achieve the above object, the present invention provides a convex lens visible cursor indicator for a dental film machine, comprising a cylindrical light column box connected to a shade tube, a visible light source, a reflector and a convex lens; the visible light source is arranged on the cylindrical inner wall surface of the light column box, the reflecting plate and the convex lens are arranged in the cylinder of the light column box, the visible light source emits visible light which is projected onto the reflecting plate, reflected to the convex lens through the reflecting plate, transmitted through the convex lens, emitted from the light outlet along the line shading cylinder, is cylindrical light beam, is parallel light and irradiates to an area to be shot in parallel.
Further, the visible cursor indicator further comprises a light source switch, and the light source switch is externally arranged on the wall of the light column box.
Further, the visible light source is arranged adjacent to the bulb tube X-ray generator.
Furthermore, the reflecting plate is obliquely arranged in the light column box, and the imaging position of the visible light source on the reflecting plate is overlapped with the position of the X-ray source in the dental film machine in the radial direction of the cylindrical inner wall surface.
Furthermore, the mirror surface of the reflector and the axis of the light pillar box are arranged at an included angle of 45 degrees and face the light outlet; the visible light source is arranged on the inner side wall surface between the mirror surface and the light outlet.
Furthermore, a light outlet cover of the light column box is provided with a transparent lampshade, and the transparent lampshade has an anti-glare function.
Furthermore, a magnetic structure is arranged at the bottom end of the light column box, and the magnetic structure is fixed at the opening of the line shielding barrel in an adsorption manner.
Further, the visible light source is an LED lamp.
Furthermore, the power supply mode of the visible light projection cursor indicator is charging type or connected to a machine power supply.
Furthermore, the cursor indicator is also provided with an infrared sensing area for sensing the position of a human body and controlling the visible light source to emit light.
The utility model relates to a required tooth film machine convex lens visible light projection cursor indicator when apex piece is shot for instruct to shine wild size and scope. The convex lens visible light projection cursor indicator for the dental film machine is used as an accessory part of X-ray inspection equipment, is mainly used for positioning and fixing points during positioning, simulates the radiation area of X-rays, can reduce the radiation dose of a patient, and enhances the image quality. Has the functions of guiding and regulating the projection visual field of X-ray.
Before the X-ray photographing is carried out by using the dental film machine, the visible light is firstly used for clearly positioning the position to be photographed, an operator is helped to quickly and clearly determine the region irradiated by the X-ray according to the light field of the visible light, whether the region is the required photographing region is visually confirmed, and therefore the possibility that the focusing view is incorrect and the photographing is forced to be reworked to be carried out again when the X-ray photographing is directly carried out is reduced.
The technical scheme of the utility model, simple structure is reliable, and is little to the change of existing equipment to it is obvious to the instruction in the X-ray field of vision.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a schematic axial sectional view of a convex lens visual cursor indicator for a dental film machine according to the present invention;
FIG. 2 is a schematic view of the three-dimensional structure of the convex lens visible cursor indicator for dental film machine according to the present invention after installation;
FIG. 3 is a schematic view of the illumination field of the convex lens visual cursor indicator for a dental film machine according to the present invention;
in the figure, 1-a reflector, 2-a visible light source, 3-a convex lens, 4-a magnetic structure, 5-a light source switch, 6-a projection light domain, 7-a projection plate, 8-a shade tube, 9-a light column box and 10-an infrared sensing area.
Detailed Description
The technical contents of the preferred embodiments of the present invention will be more clearly understood and appreciated by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments, and the scope of the invention is not limited to the embodiments described herein.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.
As shown in fig. 1, 2 and 3, a convex lens visible cursor indicator for a dental machine includes a cylindrical light pillar box 9 connected to a shade cylinder 8, a visible light source 2, a reflector 1 and a convex lens 3; the visible light source 2 is arranged on the cylindrical inner wall surface of the light column box 9, the reflecting plate 1 and the convex lens 3 are arranged in the cylinder of the light column box 9, the visible light source 2 emits visible light, the visible light is projected onto the reflecting plate 1, is reflected to the convex lens 3 through the reflecting plate 1, is transmitted through the convex lens 3, is emitted from a light outlet along the line shading cylinder 8 in a cylindrical light beam, and the light beam is parallel light and irradiates to an area to be shot.
The visible cursor indicator also comprises a light source switch 5, and the light source switch 5 is externally arranged on the wall of the light column box 9.
The visible light source 2 is an LED lamp, which can reduce heat generation. The visible light source 2 is arranged adjacent to the bulb X-ray generator.
The reflector 1 is obliquely arranged in the light column box 9, and the imaging position of the visible light source 2 on the reflector 1 is overlapped with the position of the X-ray source in the dental film machine in the radial direction of the cylindrical inner wall surface. The mirror surface of the reflector 1 and the axis of the light column box 9 are arranged at an included angle of 45 degrees and face the light outlet; the visible light source 2 is disposed on an inner wall surface between the mirror surface and the light exit.
The light outlet cover of the light pillar box 9 is provided with a transparent lampshade which has an anti-dazzle function. The bottom of the light column box 9 is provided with a magnetic structure 4, and the magnetic structure 4 is fixed at the opening of the thread shielding cylinder 8 in an adsorption manner.
The power supply mode of the visible light projection cursor indicator is charging or connected to the power supply of the machine.
The utility model relates to a working method for convex lens visible cursor indicator of dental film machine, including following step:
step one, fixedly connecting a light column box 9 to a wire covering cylinder 8;
turning on a light source switch 5 of a light column box 9, and enabling a light outlet of the light column box 9 to emit visible light;
step three, comparing the projection light field 6 with the area required by tooth filming, adjusting the inclination of the wire shading cylinder 8 in the horizontal direction or the vertical direction, locking the projection area, clearly seeing a circular shadow on the face of a patient, and finishing the adjustment;
and step four, executing the X-ray shooting operation.
The utility model relates to a required tooth film machine convex lens visible light projection cursor indicator when apex piece is shot for instruct to shine wild size and scope. The convex lens visible light projection cursor indicator for the dental film machine is used as an accessory part of X-ray inspection equipment, is mainly used for positioning and fixing points during positioning, simulates the radiation area of X-rays, can reduce the radiation dose of a patient, and enhances the image quality. Has the functions of guiding and regulating the projection visual field of X-ray.
Before the X-ray photographing is carried out by using the dental film machine, the visible light is firstly used for clearly positioning the position to be photographed, an operator is helped to quickly and clearly determine the region irradiated by the X-ray according to the light field of the visible light, whether the region is the required photographing region is visually confirmed, and therefore the possibility that the focusing view is incorrect and the photographing is forced to be reworked to be carried out again when the X-ray photographing is directly carried out is reduced.
As shown in fig. 3, a projection light field 6 visible to the operator is provided on the projection plate 7 of the area to be photographed, which is very convenient for the operator to adjust the focus. Considering that the projection field 6 should coincide with the X-ray imaging field, the imaging position of the visible light source 2 on the reflector 1 coincides with the position of the X-ray source in the dental film machine in the radial direction of the cylindrical inner wall surface. Of course, it is better that the imaging position of the visible light source 2 completely coincides with the position of the X-ray source, so that it can be ensured that the projection field 6 is completely consistent with the X-ray field regardless of the distance from the projection plate 7 to the region to be photographed.
In a better embodiment, a transparent lampshade 7 is covered at the light outlet of the thread shielding cylinder 8, and the anti-dazzle function is realized. Thereby further guaranteeing the accuracy of shooting focusing.
In a better embodiment, a region below the external visible light projection locator is a gray region and is an infrared sensing region 10, when a hand of a human body or a part of an object is in the infrared region, infrared rays emitted by the infrared emission tube are reflected to the infrared receiving tube due to shielding of the hand or the body of the human body, signals are sent after processing, the lamp beads receive signal instructions to turn on the lamp beads to emit light, and when the hand of the human body or the object leaves the infrared sensing range, the lamp beads do not receive the signals, and then the lamp beads do not emit light. The range of the infrared sensing area is 20cm in front, the time length of one-time signal transmission is 30 seconds, and the signal can be transmitted again by re-sensing after the signal is interrupted.
To sum up, the utility model discloses can effectively restrict under the visible light instruction and shine wild, avoid unnecessary to shine. The X-ray imaging device helps an operator to quickly and definitely determine the area irradiated by X-rays and visually confirm whether the area is the required shooting area, thereby reducing the possibility that the focusing framing is incorrect and the shooting is forced to be reworked and redoed when the X-ray shooting is directly carried out. The technical scheme of the utility model, simple structure is reliable, and is little to the change of existing equipment to it is obvious to the instruction in the X-ray field of vision.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. A convex lens visible cursor indicator for a dental film machine is characterized by comprising a cylindrical light column box connected to a shading cylinder, a visible light source, a reflector and a convex lens; the visible light source is arranged on the cylindrical inner wall surface of the light column box, the reflecting plate and the convex lens are arranged in the cylinder of the light column box, the visible light source emits visible light which is projected onto the reflecting plate, reflected to the convex lens through the reflecting plate, transmitted through the convex lens, emitted from the light outlet along the line shading cylinder, is cylindrical light beam, is parallel light and irradiates to an area to be shot in parallel.
2. The lenticular visible cursor indicator for a dental film machine of claim 1, further comprising a light source switch externally disposed on the light pillar box wall.
3. The convex lens visible cursor indicator for a dental film machine as claimed in claim 1, wherein the visible light source is disposed adjacent to the bulb tube X-ray generator.
4. The convex lens visible cursor indicator for a dental film machine as claimed in claim 1, wherein the reflector is placed in the light beam box obliquely, and the imaging position of the visible light source on the reflector coincides with the position of the X-ray light source in the dental film machine in the radial direction of the cylindrical inner wall surface.
5. The convex lens visible cursor indicator for a dental film machine as claimed in claim 1, wherein the mirror surface of the reflector is disposed at an angle of 45 ° to the axis of the light pillar box, facing the light outlet; the visible light source is arranged on the inner side wall surface between the mirror surface and the light outlet.
6. The convex lens visible cursor indicator for a dental film machine as claimed in claim 1, wherein the light outlet cover of the light pillar box is combined with a transparent lampshade, and the transparent lampshade has an anti-glare function.
7. The convex lens visible cursor indicator for the dental film machine as claimed in claim 1, wherein a magnetic structure is arranged at the bottom end of the light column box, and the magnetic structure is fixed at the opening of the thread shielding cylinder in an adsorption manner.
8. The convex lens visible cursor indicator for a dental film machine as claimed in claim 1, wherein the visible light source is an LED lamp.
9. The convex lens visible cursor indicator for the dental film machine as claimed in claim 1, wherein the power supply mode of the visible light projection cursor indicator is charging or connected to a machine power supply.
10. The convex lens visible cursor indicator for the dental film machine as claimed in claim 1, wherein the cursor indicator is further provided with an infrared sensing area for sensing the position of a human body and controlling the visible light source to emit light.
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| CN202021791007.7U CN213551885U (en) | 2020-08-25 | 2020-08-25 | Convex lens visible cursor indicator for dental film machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111991024A (en) * | 2020-08-25 | 2020-11-27 | 上海市口腔病防治院 | Convex lens visible cursor indicator for dental film machine and working method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111991024A (en) * | 2020-08-25 | 2020-11-27 | 上海市口腔病防治院 | Convex lens visible cursor indicator for dental film machine and working method |
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