KR101767965B1 - Alignment beam irradiation unit and and x-ray photographing apparatus with the same - Google Patents

Abstract

The present invention is directed to an alignment beam irradiating unit and an X-ray photographing apparatus having the same, which can realize the miniaturization of the apparatus because it is configured to widen the operation range to have a stroke longer than the screw length while using a short screw having a small diameter .
An alignment beam irradiating unit of the present invention for this purpose is an alignment beam irradiating unit provided in an X-ray imaging apparatus to irradiate an alignment beam for aligning an X-ray photographed portion of the examinee, comprising: a driver; A driven part capable of normal / reverse rotation by the driving part; A moving part provided on the driven part to reciprocate according to rotation of the driven part; And a plurality of alignment beam lasers provided on the moving unit corresponding to the moving direction of the moving unit.

Description

Field of the Invention [0001] The present invention relates to an alignment beam irradiating unit and an X-

The present invention relates to an alignment beam irradiating unit and an X-ray photographing apparatus having the same, and more particularly, to an X-ray photographing apparatus having a narrow beam diameter To an alignment beam irradiating unit capable of realizing miniaturization of an apparatus and an X-ray imaging apparatus having the same.

Generally, in the dentistry, an X-ray imaging apparatus capable of performing X-ray imaging is installed to treat teeth and various periodontal diseases, and to grasp the state of the teeth and alveolar bone for the purpose of correction of the dental heat.

An X-ray imaging apparatus used in a dentistry transmits a predetermined amount of X-rays to a part of a body part to be photographed, detects the intensity of the transmitted X-rays, converts it into an electric signal corresponding to the X- At this time, the computer acquires the image by obtaining the intensity of the X-ray of each point of the body imaging region and processing it.

As the above-described X-ray imaging apparatus, there is disclosed an X-ray imaging apparatus capable of both CT (Computerized Tomography) imaging capable of capturing a three-dimensional stereoscopic image and panoramic imaging capable of imaging in a two-dimensional plane.

The CT photographing is a photographing of a short face of the body which can not be represented by general photographing. The X-ray is projected on a human body while being rotated at a constant angle over 360 degrees. The transmitted X-rays are collected through a detector such as a sensor, And the image is represented by an image. The panoramic photographing is a photographing method in which the entire tooth state and the jaw joint can be seen at a glance by photographing the whole in the circumferential direction around the X-ray generator.

1 is a perspective view showing a general dental imaging apparatus.

1, the dental imaging apparatus 10 includes a pedestal 11 supported by a bottom surface of a building, a supporting column 11 provided on the pedestal 11 to be supported by the pedestal 11, A sliding rail 12b formed at the upper end of the support column 12a and a lift part 13 formed to be vertically movable up and down along the sliding rail 21, And a gantry 14 coupled to the lower portion of the portion 13 through a rotation axis so as to be linearly movable and rotatable.

The gantry 14 includes an X-ray source 15a for irradiating X-rays and a collimator 15b for adjusting the irradiation range of X-rays irradiated from the X-ray source 15a. Ray sensor 16 which is irradiated through the collimator and detects X-rays passing through the examinee.

The photographer grips the knob 17 at the time of photographing and fixes the jaw to the pedestal 18. The operator operates the touch LCD 19 to set the image photographing conditions and then photographs the examinee.

On the other hand, before capturing an image, it is necessary to align the head of the examinee. For this purpose, a horizontal line laser, a vertical line laser, a canine beam laser and the like are applied.

For example, at the time of CT imaging, a horizontal line laser beam that irradiates a horizontal line laser beam passing through the center of a target area (for example, a tooth periphery) to be photographed, a vertical line laser beam passing through the center of the target area A vertical line laser to irradiate, and a head alignment laser for irradiating a vertical line laser beam to the nose portion of the examinee for aligning the head with respect to the face of the examinee's face.

Further, at the time of panoramic photographing, for example, a horizontal line laser (a horizontal line laser) for irradiating a horizontal line laser beam passing through a Frankfurt horizontal line (FHL, Frankfort Horizontal Line, A head alignment laser that irradiates a vertical line laser beam to a nose portion of a subject and a canine beam laser that irradiates the canine of a subject are used for left and right alignment of the head with respect to the front face of the subject.

On the other hand, the horizontal line laser and the head alignment laser are commonly used in CT photographing and panoramic photographing.

At this time, the head alignment laser is configured to irradiate the nose portion of the examinee in both the CT photographing and the panoramic photographing, while the horizontal line laser is configured to be adjustable in height since the irradiation position of the beam changes in the CT photographing and the panoramic photographing .

That is, the horizontal line laser irradiates the horizontal line laser beam at a low height so as to pass through the center of the region to be photographed at the time of CT photographing, and at a position higher than the Frankfurter horizontal line of the examinee at the time of panoramic photographing, Since the beam is irradiated, the horizontal line laser must be moved through a separate moving means.

For example, as shown in FIG. 2, the conventional moving means includes a rotating motor 21, a screw 23 that receives the rotational force of the rotating motor 21 through the belt driving means 22 and rotates in the forward and reverse directions, And a moving block 24 screwed to the screw 23 and moving in the longitudinal direction of the screw 23. The moving block 24 is provided with the horizontal line laser 25, .

9) of the horizontal line laser 25 and the height (see FIG. 10) where the horizontal line laser 25 is located at the time of CT photographing (refer to FIG. 10) A screw having a long length (ex, 150 mm) is used. However, the screw 23 having a long length must have a diameter of at least 10 mm due to manufacturing limitations, and a rotary motor 21 for rotating the screw There is a problem that miniaturization is difficult to achieve.

Specifically, a small-diameter screw having a diameter of 5 mm or less has a disadvantage in that the concentricity is distorted in the process of threading, and a defect rate is generated when the screw is manufactured in a long length.

Registration No. 10-1536073 (registered on July 06, 2015)

An object of the present invention to solve the above-mentioned problems of the prior art is to provide an apparatus capable of widening the operation range so as to have a stroke longer than the length of the screw while using a short screw having a small diameter, , And by turning ON / OFF the individual sorting beam lasers and the lower sorting beam lasers individually in accordance with the respective photographing modes, when the photographing mode is switched, the movement stroke is reduced by the length corresponding to the interval of the two alignment beam lasers, And an X-ray photographing apparatus having the same.

According to an aspect of the present invention, there is provided an alignment beam irradiating unit provided in an X-ray imaging apparatus for irradiating an alignment beam for aligning an X-ray photographing region of a examinee, the apparatus comprising: A driven part capable of normal / reverse rotation by the driving part; A moving part provided on the driven part to reciprocate according to rotation of the driven part; And a plurality of alignment beam lasers provided on the moving unit corresponding to the moving direction of the moving unit.

Preferably, the plurality of alignment beam lasers may be configured to irradiate a line beam in a direction perpendicular to the moving direction of the moving portion.

Advantageously, the plurality of alignment beam lasers comprises an upper alignment beam laser for illuminating a line beam through the Frankfurt horizontal line of the subject during panoramic radiography; And a lower alignment beam laser for irradiating the line beam so as to pass through the center of the region to be photographed upon CT photographing.

Preferably, the control unit controls the driving of the driving unit, the upper alignment beam laser, and the ON-OFF of the lower alignment beam laser. In the panoramic photographing, the upper alignment beam laser is turned ON And controls the lower alignment beam laser to be turned off. In CT imaging, the upper alignment beam laser is turned off and the lower alignment beam laser is turned on.

Preferably, there is provided a bearing flange rotatably supporting an end portion of a driven portion, which is rotatable in the forward and reverse directions by the drive portion, on the other end portion of the bearing flange to which the drive portion is mounted, And a mounting bracket having a pair of guide flanges which are in close contact with both side surfaces of the moving unit to guide reciprocating movement of the moving unit.

Preferably, the moving part includes: a moving block screwed to the driven part and mounted between the pair of guide flanges; And a laser block including a fastening part to be fastened to the moving block and an extension part extending from the one side of the fastening part toward a longitudinal direction end of the driven part, And can be disposed on the extending portion in the direction of formation of the driven portion.

Preferably, the length of the extension is variable.

Preferably, the driven portion may be a screw.

An X-ray imaging apparatus having the above-described alignment beam irradiating unit is disclosed.

The present invention as described above is advantageous in that the apparatus can be miniaturized by using a short screw having a small diameter and being configured to widen the operation range to have a stroke longer than the screw length.

In addition, as each ON / OFF state is turned on / off according to each photographing mode through the upper alignment beam laser and the lower alignment beam laser, when the photographing mode is switched, the movement stroke is reduced by the length corresponding to the interval of the two alignment beam lasers, There is an advantage that it can be shortened.

1 is a perspective view showing a general dental imaging apparatus.
2 is a perspective view showing a dental imaging apparatus equipped with a conventional alignment beam irradiating unit.
3 is a perspective view showing an alignment beam irradiating unit according to an embodiment of the present invention.
4 is an exploded perspective view showing an alignment beam irradiation unit according to an embodiment of the present invention.
5 is a view showing the position of the alignment beam irradiating unit in the panoramic photographing mode according to the embodiment of the present invention.
6 is a view showing a position in the CT imaging mode of the alignment beam irradiation unit according to an embodiment of the present invention.
7 is a view illustrating a process of switching from the panoramic photographing mode to the CT photographing mode of the alignment beam irradiating unit according to an embodiment of the present invention.
8 is a view illustrating a process of switching from the CT photographing mode to the panoramic photographing mode of the alignment beam irradiating unit according to an embodiment of the present invention.
9 is a view showing a Frankfurt horizontal line.
Fig. 10 is a view showing a target area to be photographed upon CT photographing.

The present invention may be embodied in many other forms without departing from its spirit or essential characteristics. Accordingly, the embodiments of the present invention are to be considered in all respects as merely illustrative and not restrictive.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms.

The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, .

On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises", "having", "having", and the like are intended to specify the presence of stated features, integers, steps, operations, components, Steps, operations, elements, components, or combinations of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like or corresponding elements are denoted by the same reference numerals, and a duplicate description thereof will be omitted.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The alignment beam irradiating unit according to an embodiment of the present invention is an alignment beam irradiating unit provided in the X-ray imaging apparatus to irradiate an alignment beam for aligning an X-ray photographed portion of the examinee, as shown in Figs. 3 and 4 A driving unit 100, a driven unit 200, a moving unit 300, and a plurality of alignment beam lasers 410 and 420.

The driving unit 100 may be a rotating motor for rotating the driven unit 200 in the forward or reverse direction.

The driven part 200 is formed of a screw rotated in a forward direction or a reverse direction by the driving part 100, and a thread is formed on the outer peripheral surface.

Specifically, for the miniaturization of the X-ray imaging apparatus, the driven unit 200 includes a screw having a diameter of about 4 mm and a length of about 100 mm.

The moving part 300 is screwed to the driven part 200 so as to reciprocate along the longitudinal direction of the driven part 200 in accordance with forward or reverse rotation of the driven part 200.

Specifically, the moving unit 300 may include a moving block 310 and a laser block 320, as shown in FIG.

The moving block 310 is installed to be reciprocated along the longitudinal direction of the screw so as to be screwed to the driven part 200, and the reciprocating movement is guided by the mounting bracket 600.

Specifically, the mounting bracket 600 guides the reciprocating movement of the moving block 310 while allowing the driving unit 100 and the driven unit 200 to be installed.

The mounting bracket 600 is provided at one end thereof with a mounting flange 610 on which the driving unit 100 is mounted and the other end of the mounting bracket 600 is rotatable by the driving unit 100 And a bearing flange 620 for rotatably supporting an end portion of the driven portion 200. The mounting flange 620 is disposed between one end portion and the other end portion of the mounting bracket 600 in close contact with both sides of the moving block 310, A pair of guide flanges 630 for guiding the reciprocating movement of the movable block 310 are provided.

The driving unit 100 and the driven unit 200 can be fixed to the base plate BP through the mounting bracket 600. [

The laser block 320 coupled to the moving block 310 includes a fastening part 321 for fastening with the moving block 310 and a fastening part 321 fastened to one side of the fastening part 321, And an extension part (323) extending toward the longitudinal end.

The plurality of alignment beam lasers 410 and 420 include an upper alignment beam laser 410 for irradiating a line beam through the Frankfurt horizontal line of the examinee during panoramic photographing, , And a lower alignment beam laser 420 for irradiating a line beam so as to pass through the center of the region to be photographed in CT photographing, as shown in Figs. 6 and 10.

The upper alignment beam laser 410 and the lower alignment beam laser 420 are provided on the moving unit 300 so as to be arranged in the same direction as the moving direction of the moving unit 300. Specifically, The laser 410 and the lower alignment beam laser 420 are arranged on the extended portion 323 of the laser block 320 so as to correspond to the longitudinal direction of the driven portion 200 or the extending direction of the extended portion 323 .

The plurality of alignment beam lasers 410 and 420 may be configured to irradiate a line beam in a direction perpendicular to the moving direction of the moving unit 300, that is, in a horizontal direction.

A control unit (not shown) for controlling the driving of the driving unit 100 and the ON-OFF of the upper alignment beam laser 410 and the lower alignment beam laser 420 are provided.

Specifically, the control unit controls the moving unit 300 to move upward or downward along the longitudinal direction of the driven unit 200 by rotating the driving unit 100 in the forward or reverse direction.

In addition, the controller controls the upper alignment beam laser 410 to be turned on or off, and controls the lower alignment beam laser 420 to be turned on or off.

An example of the operation of the alignment beam irradiating unit constructed as described above, including the driving unit 100, the driven unit 200, the moving unit 300, the plurality of alignment beam lasers 410 and 420 and the control unit, .

First, with reference to FIG. 5, the alignment for the Frankfurt horizontal line at the time of panoramic photographing will be described.

5, when the control unit drives the driving unit 100 in the forward direction, the driven unit 200 rotates in the forward direction, and the forward rotation of the driven unit 200 causes the moving unit 200 to rotate, The upper alignment beam laser 410 is turned on and the lower alignment beam laser 420 is turned off at this time.

5, the laser beam irradiated from the upper alignment beam laser 410 may be irradiated to the Frankfurter horizontal line of the examinee so that the moving part 300 So that alignment for panoramic X-ray imaging can be performed.

Next, with reference to Fig. 6, the alignment with respect to the horizontal line passing through the center of the photographing area at the time of CT photographing will be described.

As shown in FIG. 6, when the control unit drives the driving unit 100 in the reverse direction, the driven unit 200 rotates in the reverse direction. By the reverse rotation of the driven unit 200, The upper alignment beam laser 410 is turned off and the lower alignment beam laser 420 is turned on at this time.

6, in order that the laser beam irradiated by the lower alignment beam laser 420 may be irradiated horizontally passing through the center of the photographing region for CT photographing, The upper and lower positions of the portion 300 are finely adjusted so that alignment for CT X-ray imaging is performed.

Next, referring to Fig. 7, the case of performing CT photographing after panoramic photographing will be described.

As shown in FIG. 7, when the panoramic photographing is performed using the upper alignment beam laser 410 to perform the panoramic photographing and then the CT photographing alignment is performed using the lower alignment beam laser 420, The moving distance of the moving part 300 is shortened by the distance corresponding to the distance between the laser 410 and the lower alignment beam laser 420, so that the alignment time for CT imaging can be reduced.

That is, the moving time of the moving unit 300 can be shortened by a distance corresponding to the distance between the upper alignment beam laser 410 and the lower alignment beam laser 420, So that CT imaging can be performed earlier.

Next, a description will be given of the case where the panoramic photographing is performed after the CT photographing.

As shown in FIG. 8, in the case of panoramic photographing alignment using the upper alignment beam laser 410 after the CT photographing is performed using the lower alignment beam laser 420, The moving distance of the moving part 300 is shortened corresponding to the interval between the laser 410 and the lower alignment beam laser 420, so that the alignment time for panoramic photographing can be reduced.

That is, it is possible to shorten the time for the moving unit 300 to move the distance corresponding to the interval between the upper alignment beam laser 410 and the lower alignment beam laser 420, So that the panoramic photographing can be performed earlier.

Although the laser block 320 constituting the moving unit 300 has been described as one block, the length of the extended portion 323 of the laser block 320 may be varied Of course.

For example, the extension 323 of the laser block 320 is divided into a plurality of parts, the projecting part is formed on the extended part 323 on one side, the groove part 323 is formed on the other extended part 323, And the length of the protrusion can be varied by adjusting the degree of insertion of the protrusion into the groove.

Although the present invention has been described with reference to the preferred embodiments thereof with reference to the accompanying drawings, it will be apparent to those skilled in the art that many other obvious modifications can be made therein without departing from the scope of the invention. Accordingly, the scope of the present invention should be interpreted by the appended claims to cover many such variations.

100: driving part 200:
300: moving part 310: moving block
320: laser block 321: fastening part
323: extension part 410: upper alignment beam laser
420: Lower alignment beam laser 500:
600: Mounting bracket 610: Mounting flange
620: Bearing flange 630: Guide flange

Claims (9)

An alignment beam irradiating unit provided in an X-ray imaging apparatus for irradiating an alignment beam for aligning an X-ray imaging portion of a subject,
A driving unit;
A driven part capable of normal / reverse rotation by the driving part;
A moving part provided on the driven part to reciprocate according to rotation of the driven part; And
And a plurality of alignment beam lasers provided on the moving unit corresponding to a moving direction of the moving unit,
Wherein the plurality of alignment beam lasers comprise:
An upper alignment beam laser that irradiates the line beam through the Franklin horizontal line of the subject during panoramic shooting; And a lower alignment beam laser for irradiating a line beam through the center of the region to be photographed in CT photographing. The method according to claim 1,
Wherein the plurality of alignment beam lasers are configured to irradiate a line beam in a direction perpendicular to the moving direction of the moving portion. delete The method according to claim 1,
And a control unit for controlling driving of the driving unit, ON / OFF of the upper alignment beam laser and the lower alignment beam laser,
Wherein,
When taking a panoramic image, the upper alignment beam laser is turned on and the lower alignment beam laser is turned off,
Wherein when the CT imaging is performed, the upper alignment beam laser is turned off and the lower alignment beam laser is turned on. The method according to claim 1,
And a bearing flange rotatably supporting an end portion of the driven portion rotatable by the drive portion in the normal and reverse directions is provided at the other end of the bearing flange, Further comprising: a mounting bracket having a pair of guide flanges which are in close contact with both side surfaces of the moving unit to guide reciprocating movement of the moving unit. 6. The method of claim 5,
The moving unit includes:
A moving block screwed to the driven portion and mounted between the pair of guide flanges; And a laser block including a fastening part to be fastened to the moving block and an extension part extending from one side of the fastening part toward a longitudinal direction end of the driven part,
Wherein the plurality of alignment beam lasers are arranged on the extending portion of the laser block in the direction of formation of the driven portion. The method according to claim 6,
And the length of the extending portion is variable. The method according to claim 6,
And the driven portion is a screw. An X-ray photographing apparatus characterized by comprising the alignment beam irradiating unit according to any one of claims 1, 2 and 4 to 8.

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