CN213606457U - Built-in visible light projection indicator for dental film machine - Google Patents
Built-in visible light projection indicator for dental film machine Download PDFInfo
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- CN213606457U CN213606457U CN202021628750.0U CN202021628750U CN213606457U CN 213606457 U CN213606457 U CN 213606457U CN 202021628750 U CN202021628750 U CN 202021628750U CN 213606457 U CN213606457 U CN 213606457U
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Abstract
The utility model discloses a dental film built-in visible light projection indicator relates to oral cavity jaw face image technical field, include: the light source comprises a plurality of lamp beads, and the lamp beads emit visible light; the annular base is provided with the light source, and the light source is arranged on one side of the annular base; the light channel is of a double-layer cylindrical structure with two open ends and is a visible light passing area formed by a gap between the outer side of the inner cylinder and the inner side of the outer cylinder, and one end of the light channel is connected with the annular base. The utility model discloses use visible light, to hide invisible X ray and shoot between the position invisible fuzzy position relation system of assumption even and like to with the help of the position relation that has like, can adjust the projection angle under the direct vision of naked eye, implement the projection technique more accurately.
Description
Technical Field
The utility model relates to an oral cavity jaw facial image technical field especially relates to a dental film built-in visible light projection indicator.
Background
The whole body medical image examination comprises chest radiography, X-ray radiography of four limbs and the like, and all the used equipment comprises visible light beam devices. The visible beam light serves to shrink the beam. Firstly, turning on a lamp on the beam splitter, adjusting knobs in two directions of X, Y of the beam splitter to enable light of the beam splitter to irradiate on a film box of a machine, enabling the size of a light field to be just consistent with the size of a film, and then shooting. When the X-ray field and the light field are adjusted to have extremely small deviation, the light field plays a role in simulating the invisible X-ray field.
The oral cavity maxillofacial region image technology relates to the projection of an apex piece, and the projection technology of the apex piece in the prior art mainly comprises a partial angle line projection technology and a parallel projection technology.
(I) angle-dividing line projection technique
In the oral cavity and jaw face image technology of X-ray photography of a cusp film, which is published by the national health committee of the people's republic of China in the standards of the health industry of the people's republic of China (WS/T608-2018) oral cavity and jaw face X-ray inspection operation specification (2018-05-10) and implemented by 2018-11-01, the fact that the diagonal projection technology is the most important technology and the most commonly used technology is explained in the technology of projecting the cusp film in the mouth. The technique requires that the X-ray centerline be perpendicular to the bisector of the angle between the long axis of the tooth being examined and the image receptor.
In the projection direction of the diagonal projection technique, the body surface positions suggested by the above operation specifications are as follows:
a) when the maxillary 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 parts of the central line of the X-ray are respectively as follows: 1) projecting the upper and middle incisors 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.
(II) parallel projection technique
The parallel projection technique is also called a right angle technique, a long mask tube technique or a long focus parallel projection technique. The basic projection principle of the parallel projection technology is that the X-ray film is placed in parallel with the tooth long axis, and the X-ray central line is perpendicular to both the tooth long axis and the film during projection. Theoretically, the advantage of such an image acquisition is that the degree of distortion between the dental image and the tooth is small, but 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, since a high voltage is used and a fast film is used, the exposure time is reduced and the exposure amount is lowered.
Nevertheless this application utility model people in the in-process of realizing utility model technical scheme in this application embodiment, discover that above-mentioned technique has following technical problem at least:
the line-of-branch projection technology is theoretically established, but in the process of clinical operation, because the X-ray is invisible light, the projection position, the projection direction and the projection angle cannot be accurately positioned before shooting. When the projection direction is determined and the projection is positioned at a fixed point, the contents recorded in textbooks and national standards refer to the body surface marks of the soft tissues of the face of a patient, and the space positions of the teeth are estimated and predicted by aligning the external soft tissue body surface marks through the wire shielding cylinder of the bulb tube. And because the X-ray central line is not perpendicular to the tooth long axis and the film (image imaging plate) during projection, the direction of the X-ray central line is adjusted according to an imaginary angular bisector, which is often inaccurate, and the photographed tooth image is often distorted and deformed, which undoubtedly brings great errors and uncertainty to clinical images. Because of the unstable image quality brought by non-accurate projection, the photographed tooth image is too long and too short, which brings hidden troubles to clinical treatment.
In the parallel projection technique, the X-ray center line is perpendicular to the film surface, and is no longer perpendicular to an imaginary line as compared with the diagonal projection technique, and therefore, is technically easy to ensure. However, the technique of parallel projection of the apex film is theoretically perfect, so that the implementation is quite careless, the technique is limited by the size of the oral cavity of a patient, the operation cannot be performed, and most of the cases can theoretically reach the situation that when the image plate is parallel to the long axis of the tooth, the position of the image plate at the moment is strayed out of the oral cavity. Moreover, the parallel projection technique is often used in experimental projection, and is a projection method which is not suitable for clinical use. The technology needs necessary auxiliary tools and is long in time consumption, a large intra-oral space is needed for positioning the dental film, and in most cases of actual clinical operation, due to the inclination of teeth, the shapes and thickness factors of surrounding soft tissues (a tongue body, a mouth bottom and a palate part) and bone tissues (an alveolar bone and a faucial arch) and the size of an oral cavity volume, the parallel relation between a tooth long axis and the film cannot be formed in the oral cavity volume, and the matching difficulty of a patient is high, so that the failure is caused. Thus, while parallel projection techniques are theoretically possible, they are only partially valuable in practical clinical work.
Generally, in the process of projecting the apex film, the projected part is the tooth. Regardless of the operation according to the operation specification or the projection method adopted in the actual operation, when the bulb tube shading cylinder positions the body surface marks, the fuzzy fixed-point positioning is carried out by adjusting the bulb tube shading cylinder through the body surface marks of the patient, and the problem of lack of accurate reference and marking exists. Meanwhile, since X-rays are invisible light beams, the irradiation area thereof cannot be evaluated.
The X-ray emitted by the dental film machine bulb tube is irradiated on the face of a patient in a conical or cylindrical shape from the wire shading cylinder, the closer the bulb tube is, the smaller the irradiation field is, and the farther the bulb tube is, the larger the projection field is. Because the regional unable accurate location of throwing of X ray, often can appear increasing the bulb distance, lead to the projection area increase for other irradiated areas receive unnecessary radiation, and when the bulb was close with patient's facial distance, the position skew of throwing will appear again, throw on the dental lamina and throw the phenomenon that the exposure partially appears totally.
Accordingly, those skilled in the art have sought to develop an external visible light projection positioner for a dental film machine that facilitates accurate positioning of the dental film machine bulb so that the dental film is fully exposed while minimizing unnecessary radiation.
SUMMERY OF THE UTILITY MODEL
When taking a dental film, generally, a round cylindrical shading cylinder connected with a bulb tube is adjusted, the shading cylinder is aimed at a part of a patient to be taken to shoot, and the specific area of the shot is the same as the X-ray radiation area. However, since the X-ray is invisible, the medical staff can only project according to the angular line projection technology or the parallel projection technology during projection, but the direction, the size and the range of the X-ray cannot be accurately estimated, and it is impossible to know whether the X-ray completely and effectively irradiates the dental film and whether the photographed dental film is distorted and deformed before the photographing result is obtained.
In view of the above-mentioned defect of prior art, the embodiment of the utility model provides a through providing a dental film machine external type visible light projection locator, solved the not accurate problem of location fixed point that current apex piece projection technique exists in clinical process inadequately.
The embodiment of the utility model provides a through throwing the light at the facial visible ring shape light region of patient, the position and the direction of making clear and definite specific projection for the apex piece technique of throwing the light can confirm the angle of throwing the light on the basis that has clear and definite reference thing, is favorable to clinical teaching and actual operation.
Particularly, the embodiment of the utility model provides a for through the external-type visible light projection locator of dental film machine as the accessory part of X ray inspection equipment, the main use is fixed a point when putting the position and fixes a position, simulates the radiation area of X ray with the visible ring of light of naked eye to can adjust the projection position of X ray when shooing, can obviously reduce patient radiation dose like this, increase the success rate of shooting, reinforcing image medical quality.
In order to achieve the above object, the utility model provides a dental film built-in visible light projection indicator, include:
the light source comprises a plurality of lamp beads, and the lamp beads emit visible light;
the annular base is provided with the light source, and the light source is arranged on one side of the annular base;
the light channel is of a double-layer cylindrical structure with openings at two ends and is a visible light passing area formed by a gap between the outer side of the inner cylinder and the inner side of the outer cylinder; the outer side of the inner cylinder and the inner side of the outer cylinder are provided with reflecting plates; one end of the light channel is connected with the annular base.
Further, the light source is a flexible light source.
Further, the inner cylinder and the outer cylinder are composed of an X-ray transmitting material.
Further, the radius of one end, close to the annular base, of the inner cylinder is smaller than that of one end, far away from the annular base, of the inner cylinder.
Further, the shape and the size of the outer side of the outer cylinder are matched with the shape and the size of the inner wall of the thread shielding cylinder.
Furthermore, a magnetic suction device is arranged on the other side of the annular base and is fixedly connected with an X-ray emitting position at the bottom of the thread shielding cylinder of the dental film machine.
Further, the other end of the light channel is also provided with an annular lampshade, and the annular lampshade is a light-transmitting lampshade.
Further, the visible light projection indicator is arranged in the dental film machine wire shading cylinder.
Furthermore, the light rays emitted by the light source are annular as a whole; a gray area is arranged above the front end edge of the indicator, and the gray area is an infrared sensing area.
Further, a switch is arranged at the tail end of the optical channel.
The embodiment of the utility model provides an in one or more technical scheme, following technological effect or advantage have at least:
1. because the light source is visible light, the projection direction and the size of the projection area range can be determined, the accurate positioning shooting position is achieved, and the problem of fuzzy fixed-point positioning when the oral cavity apex film is shot in the traditional sense is solved.
2. The projection direction can be accurately positioned, the deformation characteristic that the annular light of the visible light projection positioner falls on a shooting area is utilized, and the oblate or the long circle can deduce the projection direction and the influence of the projection angle on shooting. The projection angle can be readjusted when necessary, the normal projection is kept, the photographed area is made to be a circular ring as much as possible, and the influence of the projection angle on the form of the photographed tooth can be judged according to the form symmetry of the circular ring.
3. According to the principle that the area covered by the visible light is the reference X-ray radiation area, the medical staff can understand and execute the X-ray radiation area more easily, and the teaching is convenient.
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.
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 diagram of the internal structure of a preferred embodiment of the present invention;
FIG. 2 is an external overall schematic view of the embodiment of FIG. 1;
FIG. 3 is a schematic projection view of the embodiment of FIG. 1;
FIG. 4 is a schematic view of the embodiment of FIG. 1 placed in a dental machine.
The device comprises an outer cylinder 1, an inner cylinder 2, an annular lampshade 3, a lamp bead 4, an X-ray bulb 5, a wire shading cylinder 6, a switch 7, an annular base 8, a projection plate 9, an annular light 10, a magnetic attraction device 11 and an infrared sensing area 12.
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.
The embodiment of the utility model provides a through providing a dental film built-in visible light projection indicator, solved the not accurate problem of location fixed point that current apex piece projection technique exists in clinical process inadequately.
The dental film machine comprises a bulb tube and a thread shielding tube, wherein the bulb tube is connected with the thread shielding tube. The bulb tube is an X-ray generator, i.e. a device for generating rays, and a cylindrical ray shielding tube is connected in front of the bulb tube, so that the X-rays are projected to an object to be irradiated, generally teeth, from the direction. The tooth is a specific position, and when a bulb tube is used for positioning a body surface mark, an adjusting shading cylinder is used for blurring alignment points according to the body surface mark of a patient in the projection direction in the existing projection technology, so that accurate reference and marks are lacked, and furthermore, due to an invisible light beam coverage area, an irradiation area cannot be evaluated. However, the X-ray emitted by the bulb tube is irradiated on the face of the patient from the shielding tube in a conical or cylindrical shape, the closer the bulb tube is, the smaller the irradiation field is, and the farther the bulb tube is, the larger the projection field is.
When the dental film is shot, the shading cylinder is adjusted, the shading cylinder is aligned to the part of the patient needing to be shot to shoot, and the specific area of the shot is the same as the X-ray radiation area. Because the naked eye can only see that the cylindrical shading cylinder faces the projection area, the perimeter, the size and the range of the cylindrical shading cylinder cannot be accurately estimated, the X-ray during projection can only be replaced by experience or large-area large-range projection to completely cover the dental film and effectively project the X-ray onto the dental film, and the dental film is completely irradiated by the X-ray.
The embodiment of the utility model provides an in technical scheme for solve above-mentioned location fixed point problem accurate inadequately, the general thinking is as follows:
the position relation between the projected X-ray and the shooting part is accurately shown by adopting visual visible light guide reproduction, so that the projection light coverage area can be seen only by naked eyes through visible light, a visible halo area required to project the X-ray is formed in the projected facial area, invisible blur between the invisible X-ray and the shooting part and even the assumed position relation are visualized, and the projection angle can be adjusted under the direct vision of the naked eyes by means of the visualized position relation, so that the projection technology is more accurately implemented.
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. 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.
Example one
As shown in fig. 1 and fig. 2, the internal structure schematic diagram of the dental film machine built-in visible light projection indicator provided by the embodiment of the present invention includes: the light source, the light source includes a plurality of lamp pearls 4, and lamp pearl 4 send visible light, jets out along X ray emission direction. The lamp beads 4 are LED lamps and emit flexible light.
The annular base 8, the light source is installed in one side of annular base 8.
The other side of the annular base 8 is provided with a magnetic suction device 11, and the magnetic suction device 11 is fixedly connected with the inside of the thread shielding cylinder 6.
And the optical channel is a double-layer cylindrical structure with two open ends, and mainly comprises a visible light passing area formed by a gap between the outer side of the inner cylinder 2 and the inner side of the outer cylinder 1, and one end of the optical channel is connected with the annular base 8.
The tail end of the light channel is also provided with an annular lampshade 3, and the annular lampshade 3 is a light-transmitting lampshade.
The end of the light channel is also provided with a switch 7. The lighting lamp power supply adopted by the lamp bead 4 can adopt a charging type, or the same external power supply as the bulb tube power supply.
The outer cylinder 1 is sleeved with the inner cylinder 2, and the outer cylinder 1 is sleeved outside the inner cylinder 2. The outer side of the inner cylinder 2 and the inner side of the outer cylinder 1 are provided with reflecting plates.
The X-ray bulb tube 5 is a position for emitting X-rays, and the inner tube 2 and the outer tube 1 are made of X-ray transmission materials, so that a reflection light channel for visible light can be constructed, the X-rays can be ensured to be emitted normally, and the final shooting effect is not influenced.
The radius of the end of the inner cylinder 2 close to the annular base 8 is smaller than that of the end far away from the annular base 8. The inner cylinder 2 is in an approximately conical shape, and visible light is better guided to an outlet of the wire shielding cylinder 6.
The outer cylinder 1 is columnar, and the size and the shape of the outer cylinder 1 are matched with the size and the shape of the inner wall of the cable shielding cylinder, and as shown in figure 4, the outer cylinder can be embedded into the cable shielding cylinder.
The lamp beads 4 positioned on the annular base 8 emit visible light which passes through one end of the light channel to the other end of the light channel, and the visible light is projected from the outlet of the wire shielding cylinder 6 and shines on the face of a patient.
Generally, the light emitted from the lamp bead 4 is projected on the face of the patient in the form of annular light. As shown in fig. 3, in which a projection plate 9 is used to simulate the face of a patient, the annular light 10 is emitted to be projected on the face of the patient.
In the projection direction, the projection direction and the influence of the projection angle on the shooting can be inferred through the deformation characteristic that the annular light falls on the face of the patient, such as oblate or long circle, the projection angle is readjusted when necessary, the normal projection is kept, and the shot area is made to be annular as much as possible.
The position relation between the projected X-ray and the shooting part is reproduced by adopting the guidance of visible light, so that the projection light coverage area can be seen only by naked eyes through the visible light, and the invisible fuzzy or even the assumed position relation between the hidden invisible X-ray and the shooting part is visualized.
Example two
The embodiment provides a use method of a built-in visible light projection indicator of a dental film machine, which comprises the following steps:
and 4, opening the dental film machine, carrying out X-ray exposure, taking out the dental film in the mouth of the patient, and finishing shooting.
The embodiment of the utility model provides a throw and shine indicator adopts visual visible light guide to reappear and shows the accurate position relation that throws X-ray and shoot the position, does not yet have at present can replace the utility model discloses a throw and shine technical mold. The embodiment of the utility model provides a throw the indicator and broken through the mistake district that the fuzzy counterpoint was shot when shooing oral cavity apex piece in the traditional meaning, found clear and definite throw the position relation of direction and throwing the regional size scope of photograph in the environment, can reach accurate location and shoot regional position and throw the photograph and select angle relation, accurate location and throw the photograph direction, filled oral cavity jaw facial medical imaging field in the theoretical blank of apex piece projection technique.
The embodiment of the utility model provides a throw the indicator and can become the conventional outfit of dental film machine among the medical image apex piece projection technique of oral cavity jaw face. Through the embodiment of the utility model provides a dental film built-in visible light projection indicator that provides, firstly, "the exhaustibility" and the difficult operability of original technique projection have been avoided. Because the non-precise projection brings unstable image quality, the photographed tooth image is too long and too short, which brings hidden danger to clinical treatment; secondly, repeated shooting can be obviously reduced, and the damage of extra radiation received by a patient due to repeated shooting is effectively reduced; thirdly, the accurate visible light principle is easier to understand and easy to implement; fourthly, the teaching development and specialized education are facilitated; fifthly, the existing dental film machine projection technology is a theoretical system for visually presenting, reasonably supplementing and strengthening the dental oral, maxillofacial and facial medical image apex film projection technology.
In fig. 1, 2 and 4, a gray area, specifically, an infrared sensing area 12 is provided above the front edge of the built-in visible light projecting indicator. When a hand of a human body or a certain part of an object is in an infrared ray area, infrared rays emitted by the infrared emitting tube are reflected to the infrared receiving tube due to shielding of the hand or the body of the human body, and are processed to send signals, and the lamp beads receive the signal instructions to turn on the lamp beads to emit light; when the hand or the object of the human body leaves the infrared sensing range, the lamp bead does not receive the signal, and then the lamp bead does not emit light. The range of the infrared sensing area 12 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.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the teachings of this 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 (9)
1. A dental film machine built-in visible light projection indicator is characterized by comprising:
the light source comprises a plurality of lamp beads, and the lamp beads emit visible light;
the annular base is provided with the light source, and the light source is arranged on one side of the annular base;
the light channel is of a double-layer cylindrical structure with openings at two ends, and is a visible light passing area formed by a gap between the outer side of the inner cylinder and the inner side of the outer cylinder, the outer side of the inner cylinder and the inner side of the outer cylinder are provided with light reflecting plates, and one end of the light channel is connected with the annular base.
2. The dental film built-in visible light illumination indicator of claim 1, wherein the light source is a flexible light source.
3. The dental film machine built-in visible light projection indicator of claim 1, wherein said inner cylinder and said outer cylinder are comprised of an X-ray transparent material.
4. The dental film machine-embedded visible light projection indicator of claim 1, wherein a radius of an end of the inner cylinder near the annular base is smaller than a radius of an end of the inner cylinder away from the annular base.
5. The dental film machine built-in visible light projection indicator as claimed in claim 1, wherein a magnetic attraction device is arranged on the other side of the annular base and fixedly connected with an X-ray emitting position at the bottom of a shade cylinder of the dental film machine.
6. The dental film machine built-in visible light projection indicator as claimed in claim 1, wherein the other end of the light channel is further provided with an annular light shade, and the annular light shade is a light-transmitting light shade.
7. The dental film machine built-in visible light cast indicator according to claim 1, wherein the visible light cast indicator is built-in the dental film machine mask barrel.
8. The dental film machine built-in visible light projection indicator according to claim 1, wherein the light emitted from said light source is generally ring-shaped; a gray area is arranged above the front end edge of the indicator, and the gray area is an infrared sensing area.
9. The dental film machine built-in visible light illumination indicator according to claim 1, wherein a switch is further provided at the end of the light channel.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111887885A (en) * | 2020-08-07 | 2020-11-06 | 上海市口腔病防治院 | Dental film built-in visible light projection indicator and use method thereof |
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| CN111887885A (en) * | 2020-08-07 | 2020-11-06 | 上海市口腔病防治院 | Dental film built-in visible light projection indicator and use method thereof |
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