JPH07178077A - Radiodiagnostic device - Google Patents

Abstract

PURPOSE:To facilitate the position adjustment of FC(film charger) and to store this radiodiagnostic device with one driving motor, by swinging the first or the second member pivoted at its one end by I.I., so that the third or the forth member supported by FC can swing. CONSTITUTION:In the diagnostic device provided with a moving means by which FC53 is moved between the front face of the incident plane of the radiation of I.I.51 and the other plane, the moving means is provided with the first arm 83 supported freely swinghingly by I.I.51 and the second arm 84 supported freely swingingly by I.I.51. Also this moving means has the third arm 85 supported freely swingingly by the first arm 83 and FC 53, and the forth arm 86 which is supported freely swingingly by the second arm 84 and FC 53 and whose middle part is connected freely swingingly to the middle of the first arm 83. The position adjustment of FC 53 is obtained by swinging the first arm 83 by the driving device 90 including a jack 94 driven by the driving motor 91.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention arranges a film changer (hereinafter referred to as "FC") in front of an image intensifier (hereinafter referred to as "II"). X-ray direct imaging positioning by I.D. I.
The present invention relates to a radiation diagnostic apparatus having a function that can be monitored by using the F. C. Regarding the improvement of the storage mechanism.

[0002]

2. Description of the Related Art An X-ray diagnostic apparatus, which is one of conventional radiation diagnostic apparatuses, has been capable of performing X-ray fluoroscopy and X-ray direct imaging with a single unit as shown in FIG. 10 in the figure
Is I. I. , 11 are F.I. C. , 12 are X-ray tubes. As shown in FIG. 8A, the X-ray fluoroscopy shows that the X-rays emitted from the X-ray tube 12 are transmitted through the subject placed on the bed and the I.V. I. 10 incident on the I.S. I. The X-ray image converted into the optical image in 10 is used to monitor the moving image of the subject by the TV camera.
As shown in (d) of FIG. C. Photographed by exposing the film stored in 11 to light. X-ray fluoroscopy was used to obtain moving images, and direct x-ray photography was not used at the same time because it has a different purpose of being used to obtain still images. Therefore, such X
In the X-ray diagnostic apparatus, usually, X-ray fluoroscopy and X-ray direct imaging are switched by the method described below. That is, the entire apparatus other than the X-ray tube is rotated 90 ° about the rotation axis A from the position shown in FIG. 8A as shown in FIG. 8B. Next, as shown in FIG. 8C, the entire apparatus is brought close to the X-ray tube 12, and the F. C. 11 is moved to the right in the figure so as to be arranged at the photographing position shown in FIG.

However, F. C. Since you cannot see the image when you take X-ray directly with,
If the doctor inserts a catheter into the blood vessel of the subject, F.F.
C. The catheter may come off while setting 11, and the imaging may be redone. In addition, since the positioning of the photographing position is roughly performed, there is a problem that the positioning takes time. Therefore, if the image capturing fails, it takes time because the image is re-imaged after the development, and there is a risk that the dose of the subject is increased.

Therefore, in order to solve such a problem, recently, the F.K. C. I. I. It is placed in front of the entrance surface of the X-ray, and while setting the catheter etc. while observing the fluoroscopic image on the monitor and positioning,
An X-ray diagnostic apparatus has been used in which a film is set and a picture is taken after confirming a video image to be taken by direct X-ray photography. In such an X-ray diagnostic apparatus, there is an advantage that positioning is made very easy by the fluoroscopic image and setting can be performed quickly. On the other hand, when the X-ray direct imaging is not performed, the F.D. C.
I. I. A storage mechanism that can be stored on the side surface of the storage device is provided. FIG. 9 is a diagram showing a conventional example of such an X-ray diagnostic apparatus as described in JP-A-5-184560. That is, in FIG. I. ,
21 is F.I. C. And B indicates the central axis of the X-ray tube. F. C. When shooting directly at 21, the arrangement is as shown in (a). In this X-ray diagnostic apparatus, the F. C. Two
1 is stored, as shown in FIG. C. Two
1 was slid to the right in the figure, subsequently rotated 90 degrees around the point C as shown in (c), and further slid to the left in the figure. In addition, F.
C. When 21 was used, the reverse operation was performed.

[0005]

In the conventional X-ray diagnostic apparatus described above, the F.D. C. The storing operation of the F. is performed by combining the linear motion and the rotary motion. C.
As a result, the turning radius of F. C.
However, there is a problem in that the operating range becomes wider and it becomes necessary to secure this operating range. In addition, the F.
C. Is F. C. Since the moment of inertia increases as the distance from the support point increases, the strength of the support member must be increased. Therefore, there is a problem that the X-ray diagnostic apparatus itself becomes large, and there is a problem that the installation place of the apparatus is limited. Further, a plurality of drive motors and the like are required to perform the linear motion and the rotary motion, and there is a problem in the reliability of the device. Furthermore, if the storage device is complicated, there is a problem that the angle of the X-ray detection device and the like with respect to the subject is limited, and the subject does not have a good impression despite the medical device. In addition, I.D. I. There was a risk that the maintenance of the product would be hindered.

Therefore, the present invention is based on the F. C. It is an object of the present invention to provide a radiation diagnostic apparatus having storage means that can reduce the number of drive motors as well as reduce the operating range.

[0007]

In order to solve the above-mentioned problems and achieve the object, the present invention provides a radiation generating means for exposing the radiation, and a radiation exposed from the radiation generating means and transmitted through a subject. An image intensifier that detects and converts it into an optical image, a film changer that holds a film that is exposed to the radiation that has been exposed from the radiation generation means and that has passed through the subject, and the film changer that causes the image intensifier to enter the radiation. In a radiation diagnostic apparatus including a moving unit that moves between a front surface of a surface and another surface, the moving unit includes a first member whose one end is swingably supported by the image intensifier, A second member, one end of which is swingably supported by the image intensifier, and one end of which is swingably connected to the other end of the first member. A third member, the other end of which is swingably supported by the film changer, and one end of which is swingably connected to the other end of the second member, and the other end of which is swingably supported by the film changer. And a means for swinging at least one of the first member and the second member, and a fourth member having an intermediate portion swingably connected to the intermediate portion of the first member. did.

On the other hand, the moving means includes a linear first guide groove provided in the image intensifier and an arcuate second guide groove connected to an end portion of the first guide groove. The film changer is provided with the first
And a first roller and a second roller movably arranged in the second guide groove at the same interval as the radius of the circular arc, and the first and second rollers with the first and second guide grooves. It may be provided with a means for driving along.

[0009]

As a result of taking the above-mentioned means, the following effects occur. I. I. A first member whose one end is swingably supported, or I. I. By swinging the second member whose one end is swingably supported, one end is swingably connected to the other end of the first member. C. A third member whose other end is swingably supported, and one end of which is swingably connected to the other end of the second member. C. The other end is swingably supported by the fourth member, and the middle part is swingably connected to the middle part of the first member.
And the member of. For this reason, C. Can be turned by the third member and the fourth member, and the I.I. can be changed by the first member and the second member. I. The position with respect to can be changed.

On the other hand, I.D. I. Linear first provided on the
Of the guide groove and the arc-shaped second guide groove connected to the end of the first guide groove. C. By moving the first roller and the second roller that support the F., the first roller and the second roller move in the first guide groove. C. Can be moved to a rotatable position. Then, when the first roller moves in the second guide groove, the second roller
Since the roller of No. 4 stops at the connecting portion of the first guide groove and the second guide groove, the F.F. C. Rotates.

In both of the above two methods,
F. C. It is possible to reduce the turning radius of
F. C. I. I. Interference with I.P.
I. It is possible to carry out a storing operation such that the storing operation approaches and passes. Therefore, F. C. The operating range can be reduced, and the degree of freedom in designing the radiation diagnostic apparatus can be increased. Also, the moment of inertia can be minimized, and the strength of each element of the storage device can be reduced. Moreover, since only one drive motor is required, the reliability of the device is improved.

[0012]

1 is a side view showing the main part of an X-ray diagnostic apparatus according to a first embodiment of the present invention. FIG. 2 is a side view showing the X-ray detection device. In the figure, 30 is a supporting device, and 31 is an arm portion rotatably held by the supporting device 30 about an axis D. The arm portion 31 includes a moving arm 32 that moves in the direction of the arrow R in the figure, and an X-ray generator 40 and an X-ray detector 50 are provided at the tip ends thereof. Further, reference numeral 60 denotes a bed on which the subject P is placed, which is made of a material that allows X-rays to pass therethrough. The bed 60 is instructed by a bed supporting device (not shown) so as to be movable in the direction perpendicular to the paper surface while the subject P is placed. Each of these devices is controlled by a control device (not shown). In addition, 70 has shown the floor of the imaging room.

The X-ray generator 40 is provided with an X-ray tube 41 that irradiates the X-ray fan beam F _x and a high-voltage drive device (not shown) that drives the X-ray tube 41. The X-ray detection device 50 uses the X-ray fan beam F transmitted through the subject P.
A cylindrical I.x. for converting an X-ray image of _x into an optical image. I. 51
And this I. I. T for capturing the optical image converted by 51
V camera 52 and I.V. I. A storage device 80 described later in reference numeral 51
F. which holds a plurality of films that are held via the X-ray and are exposed to X-rays. C. It is equipped with 53. I. I. 51 is provided with a circular incident part 51a on which X-rays are incident. F.
C. 53 is provided with an X-ray transmission part 53a capable of transmitting X-rays in the vertical direction in the figure and a film storage part 53b. When performing, the unphotographed film is taken out from the film storage portion 53b and placed in the X-ray transmission portion 53a.

The storage device 80 is constructed as follows. That is, as shown in FIG. I. 51, a support plate 81 is attached to the side surface thereof. C. 5
A holding plate 82 is attached to 3. One end 83 a of the first arm 83 and one end 84 a of the second arm 84 are swingably attached to the support plate 81. One end 85a of a third arm 85 is swingably attached to the other end 83a of the first arm 83, and a holding plate 82 is swingably attached to the other end 85b of the third arm 85. One end 86a of a fourth arm 86 is swingably attached to the other end 84b of the second arm 84.
A holding plate 82 is swingably attached to the other end 86b of the arm 86, and an intermediate portion 86c is swingably attached to an intermediate portion 83a of the first arm 83. A drive arm 87 is provided at an intermediate portion of the first arm 83, and a tip 94a of a jack portion 94 of a drive device 90 described later is swingably attached to an end portion 87a of the drive arm 87. .

The drive device 90 is provided with a drive motor 91, a worm gear portion 93 for transmitting the rotational force of the drive motor 91 via a belt 92 and converting the rotational force into a linear motion, and a worm gear of the worm gear portion 93. And a jack portion 94.

In the X-ray diagnostic apparatus constructed as described above,
X-ray fluoroscopy and X-ray direct imaging are performed as follows. That is, the F.D. C.
53 is arranged at the position shown in FIG. 2, and the bed 60 is moved so that the imaging region of the subject P with the catheter inserted in the blood vessel is located between the X-ray generator 40 and the X-ray detector 50. . The arm portion 31 is swung about the axis D and stopped at a desired angle. Further, the moving arm 32 is moved to set the angle around the body axis of the subject P. Next, the X-ray fan beam F _x is emitted from the X-ray tube 41 of the X-ray generator 40. At this time, F. C. There is no film in the X-ray transmission part 53a in the 53. Therefore, the X-ray fan beam F _x transmitted through the subject P is F. C. The X-ray transmitting portion 53a of the I. I. It is incident on the incident portion 51 a of the light source 51. I.
I. At 51, the incident X-ray image is converted into an optical image,
An X-ray fluoroscopic image of the subject P is displayed on a monitor (not shown) via the camera 52. At this time, the imaging position can be confirmed by the X-ray fluoroscopic image displayed on the monitor, and it can be confirmed whether or not the catheter inserted into the blood vessel of the subject P is detached. After confirming the X-ray fluoroscopic image, the X-ray irradiation is once stopped, the film is taken out from the film storage portion 53b, and loaded in the X-ray transmission portion 53a. Then, the X-ray fan beam F is emitted from the X-ray tube 41.
_{The x-} ray is irradiated for a predetermined time, and the X-ray fan beam F _x transmitted through the subject P enters the film in the X-ray transmission portion 53a,
The film is exposed.

On the other hand, when performing X-ray fluoroscopy, F.
C. 53 is stored in advance as follows. That is, the drive motor 91 of the storage device 80 is operated, and the jack portion 94 is moved in the direction of arrow E in the drawing via the belt 92 and the worm gear of the worm gear portion 93. The driving arm 87 receives a force from the tip 94a of the jack portion 94, and
The arm 83 is swung in the direction of arrow S ₁ in the figure. By the swing of the first arm 83, the second arm 84 is in the direction of arrow S _{2 in the} figure, the third arm 85 is in the direction of arrow S _{3 in the} figure, and the fourth arm 8 is shown.
6 swings in the direction of arrow S ₄ in the figure. F. C. 53 is the third
The direction is changed by the swing of the arm 85 and the fourth arm 86, and the I.I. is changed by the swing of the first arm 83 and the second arm 84. I. The position with respect to 51 can be changed. In this way, C. 53 moves in the direction of arrow T in the figure, is stored in the position shown in FIG. 3, and the drive motor 91 stops. At this time, F. C. The predetermined position Q of 53 is I.53. I. It passes through a position indicated by a broken line Q'in the drawing which passes near the predetermined position of 51.

As described above, the F. C. After 53 is stored, the bed 60 is moved so that the fluoroscopic region of the subject P is located between the X-ray generator 40 and the X-ray detector 50. Then, the X-ray fan beam F _x is emitted from the X-ray tube 41 of the X-ray generator 40. At this time, the X-ray fan beam F _x transmitted through the subject P is I.P. I. 51 incident part 5
It is incident on 1a. I. I. At 51, the incident X-ray image is converted into an optical image, and the X-ray of the subject P is transmitted via the TV camera 52.
A fluoroscopic image is displayed on a monitor (not shown). When the X-ray direct imaging is performed from the stored state, the drive motor 91 is rotated in the reverse direction so that the F.S. C. 5
3 can be moved. Also in this case, the same position as in the storing operation is passed.

As described above, according to this embodiment, the F.D.
C. Since the rotating operation of 53 and the linear movement are simultaneously performed, C. The rotation center of 53 moves constantly, and although the rotation radius is small, I.53. I. It does not interfere with 51. Therefore, F. C. 53 to the I.D. I. 51, and as far as possible, I.51. I. It is possible to perform a storage operation such that the storage operation approaches and passes through 51. For this reason, C. The operating range of 53 can be reduced, the degree of freedom in designing the X-ray diagnostic apparatus can be increased, the moment of inertia can be minimized, and the strength of each element of the storage device 80 can be reduced. Moreover, since only one drive motor 91 is required, reliability is also improved. further,
F. C. 53 is stored, the I.D. I. Around the 51.
C. Since there is no holding mechanism or guide mechanism for 53, the subject P
The impression seen from I. I. The degree of freedom in the angulation range centered on the axis C performed by the subject 51 on the fluoroscopy 51 is increased.

FIG. 4 is a side view showing the main part of the X-ray diagnostic apparatus according to the second embodiment of the present invention. Further, FIG. 5 is a diagram for explaining a main part of the storage device, and FIGS. 6 and 7 are side views of the X-ray detection device 150 with a decorative plate on the side face removed. In these figures, the same functional parts as those in FIGS. 1 to 3 are designated by the same reference numerals. Therefore, detailed description of the overlapping portions will be omitted.

The X-ray detection device 150 is an I.D. I. 151
, TV camera 152, I.D. I. Storage device 1 at 151
F. 80 retained via. C. 153 is provided.
F. C. 153 is provided with an X-ray transmission portion 153a capable of transmitting X-rays in the vertical direction in the drawing and a film storage portion 153b, and an unphotographed film is taken out from the film storage portion 153b when X-ray direct photography is performed. And is arranged in the X-ray transmission part 153a.

The storage device 180 is constructed as follows. That is, as shown in FIG. I. A guide plate 181 is attached to the side surface of the 151.
C. A holding arm 182 having an L-shaped cross section is attached to 153. As shown in FIG. 5A, the guide plate 181 includes a first guide groove 183 in the left-right direction in the drawing and the first guide groove 183.
One end of the guide groove 183 is connected to one end thereof, and an arc-shaped second guide groove 184 having a predetermined radius is provided. Holding arm 1
One end of 82 is attached to a position where it does not interfere with the X-ray transmission part 153a, and the other end is attached to the guide plate 181 via the roller part 185. The roller portion 185 is provided with rollers 185a and 185b.
5a and 185b are the first guide groove 183 and the second guide groove 18
You are guided to 4. An engagement portion 192a of a belt 192 of a driving device 190 described later is swingably attached to the roller portion 185.

The drive unit 190 includes a drive motor 191, a belt 192 driven by the drive motor 191, and guide rollers 193a and 193 for guiding the belt 192.
b, 193c, 193d. The guide roller 193c is arranged such that the range from 270 ° to 360 ° is a position along the second guide groove 184 when the upper end of the outer periphery of the guide roller 193c is 360 ° in the clockwise direction with 0 °. .

The operation of the X-ray diagnostic apparatus configured as described above is different from that of the first embodiment in F. C. 153 is in the storing operation. Therefore, only the storage operation when performing X-ray fluoroscopy will be described.

The drive motor 191 of the storage device 180 is operated to rotate the belt 192 in the direction of arrow U in the figure. Since the engaging portion 192a of the belt 192 is engaged with the roller portion 185, the roller portion 185 receives a force in the left direction in the figure, and the rollers 185a and 185b move while rotating in the first guide groove 183. When the roller 185a reaches the connecting portion 184a between the first guide groove 183 and the second guide groove 184, the engaging portion 192a of the belt 192 starts rotating clockwise along the guide roller 193c. At this time, the roller 18
5a moves along the guide groove 184, and the roller 185b remains stationary at the connecting portion 184a. Roller part 185
Together with the engaging portion 192a, starts rotating motion and stops when the roller 185a reaches the end 184b of the second guide groove 184. The drive motor 191 stops when it detects that it has stopped. At this time, F. C. 153 is stored in the position shown in FIG. When performing X-ray direct imaging from the stored state, the drive motor 191 is rotated in the reverse direction so that the F.S. C. 153 can be moved. Also in this case, the same position as in the storing operation is passed.

As described above, according to this embodiment, the F.
C. Since the turning radius of 153 can be reduced,
F. C. 153 as an I.D. I. 151 as long as it does not interfere with I.151. I. It is possible to carry out a storing operation such that the storing operation comes close to 151 and passes. Therefore, F. C.
The operating range of the F.153 can be reduced, the degree of freedom in designing the X-ray diagnostic apparatus is increased, and C. 153 and I.D. I.
Since the distance H to 151 is small, the strength of each element of the storage device 180 can be reduced. Moreover, since only one drive motor 191 is required, reliability is also improved. In addition, F. C. 153 is stored in the I.V. I. 151
Since the distance from the central axis of the storage device 180 can be reduced, the degree of freedom in designing the X-ray diagnostic apparatus can be increased and the strength of each element of the storage device 180 can be reduced. The present invention is not limited to the above-mentioned embodiments,
Needless to say, various modifications can be made without departing from the scope of the present invention.

[0027]

According to the present invention, F.I. C. The captured image of I. I. To see through. C. I. I. A radiation diagnostic apparatus that can be arranged in front of the entrance surface of F. C. It is possible to simultaneously perform the rotational movement and the linear movement of the. For this reason, C. The operating range can be reduced, and the radius of gyration can be reduced, so that the moment of inertia can be minimized and the degree of freedom in designing the device can be increased. Moreover, since only one drive motor is required, the reliability of the device is improved.

[Brief description of drawings]

FIG. 1 is a side view showing an outline of an X-ray diagnostic apparatus according to a first embodiment of the present invention.

FIG. 2 shows the F.D. C. The side view of the principal part at the time of use.

FIG. 3 shows the F. C. The side view of the principal part at the time of storing.

FIG. 4 is a side view schematically showing an X-ray diagnostic apparatus according to a second embodiment of the present invention.

FIG. 5: F. C. The front view which shows the support part.

FIG. 6 shows the F. C. The side view of the principal part at the time of use.

FIG. 7 shows the F. C. The side view of the principal part at the time of storing.

FIG. 8 shows the I.D. in the conventional X-ray diagnostic apparatus. I. And F.
C. The side view which shows the switching method of.

FIG. 9 shows a conventional F.I. C. I. I. In the X-ray diagnostic apparatus that can be arranged in front of the F. C. FIG. 5 is a schematic diagram for explaining the storage operation of the.

[Explanation of symbols]

30 ... Supporting device 31 ... Arm part 32 ... Moving arm 40 ... X-ray generator 41 ... X-ray tube 50, 150 ... X-ray detector 51, 151 ...
I. I. 52,152 ... TV camera 53,153 ...
F. C. 60 ... Bed 80, 180 ... Storage device 81 ... Support plate 82 ... Holding plate 83 ... First arm 84 ... Second arm 85 ... Third arm 86 ... Fourth arm 87 ... Drive arm 90 ... Drive device 91 ... Drive motor 92 ... Belt 93 ... Worm gear part 94 ... Jack part 181 ... Guide plate 182 ... Holding arm 183 ... First guide groove 184 ... Second guide groove 185 ... Roller parts 185a, 185
b ... Roller 190 ... Drive device 191 ... Drive motor 192 ... Belt 193a, 193b, 193c, 193d ... Guide roller

Claims (2)

[Claims] 1. A radiation generating means for exposing radiation, an image intensifier for detecting the radiation emitted from the radiation generating means and transmitted through a subject and converting it into an optical image, and the radiation for emitting from the radiation generating means. Radiation diagnostic apparatus including a film changer for holding a film that is exposed to the radiation that has passed through the subject and a moving unit that moves the film changer between the radiation incident surface of the image intensifier and another surface. In the moving means, the first member has one end swingably supported by the image intensifier, and the second member has one end swingably supported by the image intensifier.
Member, a third member whose one end is swingably connected to the other end of the first member, and the other end of which is swingably supported by the film changer, and the other end of the second member. A fourth member having one end swingably connected to the film changer, the other end swingably supported by the film changer, and an intermediate portion swingably connected to an intermediate portion of the first member; A radiation diagnostic apparatus comprising means for swinging at least one of the first member and the second member. 2. A radiation generating means for exposing the radiation, an image intensifier for detecting the radiation emitted from the radiation generating means and transmitted through the subject, and converting it into an optical image, and an exposure from the radiation generating means. Radiation provided with a film changer for holding a film which is exposed to the radiation transmitted through the subject and a moving means for moving the film changer between the radiation incident surface of the image intensifier and another surface. In the diagnostic device, the moving means includes a linear first guide groove provided in the image intensifier and an arc-shaped second guide groove connected to an end portion of the first guide groove, A first roller and a second roller provided on the film changer and movable in the first and second guide grooves and having the same interval as the radius of the arc. A radiation diagnostic apparatus comprising a roller and means for driving the first and second rollers along the first and second guide grooves.