JP3060969B2 - X-ray fluoroscope - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved technique of an X-ray fluoroscopic apparatus provided with a rapid photographing apparatus capable of cassette photographing and cassette photographing.

[0002]

2. Description of the Related Art A conventional flash photography apparatus capable of performing both cassette photography and cassette telephotography provided in this type of X-ray fluoroscopic photography apparatus includes, for example, a film carriage and a cassette which are vertically arranged at a standby position. However, the film is sent to the shooting position via different upper and lower transport paths, and film shooting is performed with the film surface height at the shooting position being different, or it is arranged vertically at the standby position. The film carriage and cassette provided are sent to the shooting position via a transfer path provided in the form of congestion in the middle, and in each case, the film is set so that the film surface is at the same height and film shooting is performed There was something that became.

However, in the case of the former configuration, since the transport paths of the film carriage and the cassette are at different heights, there is a problem that the configuration around the transport mechanism is complicated and the size of the apparatus is increased. Because the height of the film surface of the film carriage and that of the cassette are different, the distance between the focal point of the X-ray tube and each film surface is different, and the imaging conditions of the X-ray transmission image are different from those in the case of cassette shooting and cassette shooting. There was also a problem that it was necessary to change it. Also,
In the case of the latter configuration, there is a problem that the configuration around the transport mechanism is complicated because the transport paths above and below the film carriage and the cassette are congested on the way.

Accordingly, the applicant of the present application has proposed an invention which solves the above problem as Japanese Patent Application No. 7-337957.

In this improved apparatus, the main body case of the rapid photography apparatus is placed in a direction substantially orthogonal to the longitudinal direction of the top plate at the lower portion of the top plate including the X-ray transmission region through which X-rays from the X-ray tube pass. It is arranged to cross. The main body case has a front side between a loading position where a film magazine for supplying / storing a film with a film carriage for cassette shooting and a film magazine at the loading position. And a standby position where the film carriage waits when the film is conveyed, and an imaging position is provided in the X-ray transmission area corresponding to a direction traversing the top plate from the standby position, and retracted from the imaging position to the back side. A location is provided. Then, a film carriage arranged so as to be able to reciprocate on a transfer path from the standby position to the evacuation position via the photographing position and a film carriage are allowed to enter the standby position, and the film carriage is moved to the evacuation position. When moved, the cassette is configured to be able to reciprocate along the transfer path between the standby position and the photographing position, while the cassette surface for cassette photographing is adjusted so that the film surface height of the film carriage matches the film surface height of the cassette. And a cassette holding frame for holding the cassette.

In the cassette photographing by this apparatus, a cassette holding frame for holding a cassette for cassette photographing is at a standby position, and a film carriage is also at a standby position by an allowance function of the cassette holding frame, and a film magazine at a loading position is provided. This is performed by moving to the shooting position after receiving more film supply. Also, cassette shooting is performed with the film carriage in the retracted position on the back side, the cassette holding frame in the standby position, the cassette held in the cassette holding frame, and the cassette held in the retracted position. The frame is moved by holding the cassette and moving along the same transport path as the film carriage to the photographing position before the retreat position.

According to this apparatus, since the film surface height at the photographing position is the same for cassette photographing and cassette photographing, photographing can be performed under the same conditions without changing photographing condition settings in both photographing. Since the transport path of the film carriage and the cassette is one without congestion, the apparatus can be downsized and the configuration around the transport mechanism can be simplified.

[0008]

However, in this improved apparatus, a drive mechanism for reciprocating a film carriage from a standby position to a retreat position via a photographing position to a retreat position, and a cassette holding device separately. A drive mechanism for reciprocating the frame between the standby position and the photographing position is required. Therefore, this device has a problem that the structure of the drive mechanism is complicated. Similarly, in a conventional apparatus having the above-described transport path for the film carriage and the cassette above and below and a conventional apparatus in which the transport path for the film carriage and the cassette is congested from the middle, similarly, two drive mechanisms for the film carriage and the cassette are provided. Required, and the structure of the drive mechanism was complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and can perform photographing under the same X-ray transmission image photographing conditions in cassette photographing and cassette photographing. X-ray fluoroscopy apparatus equipped with a quick-shooting apparatus capable of reducing the size of the camera, simplifying the configuration around the transport mechanism of the film carriage and cassette, and also simplifying the configuration of the drive mechanism. The purpose is to provide.

[0010]

The present invention has the following configuration to achieve the above object. That is, according to the first aspect of the present invention, a top plate on which a subject is placed, an X-ray tube and an image intensifier arranged at opposing positions sandwiching the top plate, cassette imaging and cassette imaging can be performed. X equipped with a simple flash photography device
In the fluoroscopic imaging apparatus, the main body case of the flash photography apparatus is moved in a direction substantially orthogonal to a longitudinal direction of the top plate under the top plate including an X-ray transmission region through which X-rays from the X-ray tube pass. A loading position in which a film magazine for supplying / storing a film between the cassette and a film carriage for cassette shooting is loaded in the main body case; A standby position where a film carriage waits when the cassette is held while carrying the film to and from the film magazine at the loading position is provided, and the X-ray transmission from the standby position in a direction transverse to the top plate is provided. A shooting position is provided in the area, and a standby area for cassette shooting is provided on the back side from this shooting position, and the standby position is passed through the shooting position from the standby position. A film carriage disposed so as to be able to reciprocate on a transfer path leading to the standby area; and a drive mechanism for reciprocating the film carriage in the transfer path so that the film carriage can be stopped at an appropriate stop position in the transfer path. ,
A cassette holding frame for holding a cassette for cassette photographing is integrally or detachably connected to the film carriage so that the height of the film surface of the film carriage and the height of the film surface of the cassette match. At the time of photographing, the film carriage and a cassette holding frame connected to the film carriage are moved from the standby position to the standby area so as to be capable of standby.

According to a second aspect of the present invention, there is provided a top plate on which a subject is placed, an X-ray tube and an image intensifier arranged at opposing positions sandwiching the top plate, cassette imaging and cassette imaging. An X-ray fluoroscopic apparatus comprising: a radiographing apparatus capable of radiographing, wherein a body case of the radiographing apparatus is provided with an X-ray through which X-rays from the X-ray tube pass.
It is disposed so as to cross in a direction substantially orthogonal to the longitudinal direction of the top plate at the lower portion of the top plate including the line transmitting area, and in the main body case, a film carriage for cassetteless photography is provided on the front side thereof. A loading position where a film magazine for supplying / storing a film between the film magazines is loaded, and a standby position where a film carriage waits when a film is transported between the film magazines at the loading position. An imaging position is provided in the X-ray transmission area in a direction transverse to the top plate from the standby position, a first retreat area is provided on the back side from the imaging position, and a retraction area is provided from the first evacuation area. A second evacuation area is provided on the side, and is provided so as to be able to reciprocate along a transfer path from the standby position to the second evacuation area via the imaging position and the first evacuation area. With a I Lum carriage, and a drive mechanism for the film carriage is reciprocated by a suitable capable said transfer path stop at the stop position of said transfer path,
A cassette holding frame holding a cassette for cassette photographing so that the height of the film surface of the film carriage and the height of the film surface of the cassette match each other is integrally or detachably connected to the film carriage. The cassette holding frame may be separated from the film carriage and connected to the film carriage with the photographing position interposed therebetween.

According to a third aspect of the present invention, in the X-ray fluoroscopic apparatus according to the first or second aspect, the cassette holding frame is provided on the film carriage such that the cassette holding frame can be stored and pulled out of the film carriage. It is characterized by being connected.

[0013]

According to the first aspect of the present invention, in the cassette photographing, the film carriage is at the standby position, the film is supplied from the film magazine at the loading position, and then moved to the photographing position by the drive mechanism and stopped. Then, an X-ray transmission image is photographed, and when the photographing is completed, the film is moved to the standby position by the drive mechanism and stopped, and the photographed film is stored in the film magazine from the film carriage. As long as an unphotographed film is loaded in the film magazine, it is possible to repeatedly perform the quick shooting by the cassette without changing the film magazine.

On the other hand, cassette photographing is performed as follows. First, when the film carriage is in the standby position, and the operator holds the cassette in the cassette holding frame connected to the film carriage, the drive mechanism moves the film carriage from the standby position to the standby area via the shooting position. . Since the cassette holding frame is connected to the film carriage, the cassette holding frame is moved to the standby area via the standby position and the photographing position together with the film carriage while holding the cassette. Then, the cassette holding frame holding the film carriage and the cassette stands by in a waiting area where the film carriage and the cassette holding frame connected to the film carriage can stand by. Next, when performing cassette photographing, the drive mechanism moves the film carriage in the direction of the photographing position by a predetermined amount and stops, whereby the cassette held by the cassette holding frame is positioned at the photographing position, where the X-ray transmission image is obtained. Is taken. When this photographing is completed, the film carriage is moved to the standby position via the photographing position by the driving mechanism, and the cassette returned to the position before the standby position is removed from the cassette holding frame by the operator. Each time one cassette image is taken, the above process is repeated.

The cassette holding frame may be integrally connected to the film carriage, or may be detachably connected. Claim 3 when integrally connected.
It is preferable to configure as in the invention described in (1). When the cassette is detachably connected, the cassette holding frame is attached to and connected to the film carriage during cassette shooting, and the cassette holding frame is detached from the film carriage at times other than cassette shooting.

[0016] The cassetteless photographing in the second aspect of the present invention is performed in the same manner as the cassetteless photographing in the first aspect of the present invention.

The cassette photographing according to the second aspect of the present invention is performed as follows. First, the film carriage is at the standby position, and when the operator holds the cassette in the cassette holding frame connected to the film carriage, the drive mechanism moves the film carriage from the standby position to the first retreat area via the shooting position. Be moved. Since the cassette holding frame is connected to the film carriage, the cassette holding frame is moved together with the film carriage while holding the cassette. Then, the film carriage is positioned in the first standby area, and the cassette holding frame holding the cassette is positioned on the standby position side with the photographing position interposed therebetween, and waits. Next, when performing cassette photographing, the drive mechanism moves the film carriage to the second retreat area and stops, so that the cassette held in the cassette holding frame is moved from the standby position to the photographing position and stopped. And then X
A line transmission image is photographed. When the photographing is completed, the film carriage is moved to the standby position via the first retreat area and the photographing position by the drive mechanism, and the cassette returned to the position before the standby position is removed from the cassette holding frame by the operator. Each time a cassette is taken,
The above process is repeated.

In the second aspect of the invention, similarly to the first aspect, the cassette holding frame may be integrally connected to the film carriage, or may be removably connected to the film carriage. It may be.

As described above, according to the first and second aspects of the present invention, the transport path is shared between the cassette photographing and the cassette photographing, and the driving mechanism is shared.

According to the third aspect of the present invention, at the time of cassette photographing, the cassette holding frame is pulled out from the film carriage so that the cassette can be held. At this time, since the cassette holding frame pulled out from the film carriage at the standby position protrudes from the main body case, the operation of setting and removing the cassette with respect to the cassette holding frame can be performed outside the main body case, and the work becomes easy. . In addition, at times other than cassette photographing, the cassette holding frame is stored in the film carriage. Thus, it is possible to prevent the cassette holding frame from being obstructed by protruding from the main body case.

[0021]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram showing an entire configuration of an example of an X-ray fluoroscopic apparatus according to the present invention.

In this X-ray fluoroscopic apparatus, the up-and-down rotating frame 2 is rotatably supported on the lower side as shown by the arrow A with respect to the base 1, while the subject M is laid on its side. The plate 3 is disposed above the turning frame 2 so as to be movable in the longitudinal direction as indicated by the arrow B. An X-ray tube 5 is attached to the tip of a support frame 4 disposed on the back side of the turning frame 2 so that the top plate 3 faces from above.
An image intensifier 6 is disposed below the top plate 3 at a position facing the X-ray tube 5. The X-ray tube 5 can move in the direction indicated by the arrow C, but the image intensifier interlocks with the movement of the X-ray tube 5 so that the opposed arrangement relationship between the X-ray tube 5 and the image intensifier 6 is always maintained. 6 also moves. In addition, below the top plate 3 of the up-and-down rotating frame 2, there is provided a rapid photography device 7 for taking a film image of an X-ray transmission image of the subject M.

When fluoroscopy is performed by the apparatus of the embodiment, the tilting rotation frame 2 is rotated or the top plate 3 on which the subject M is placed is moved by the operation of the operation unit 8 via the drive control unit 9. The positioning of the subject M is performed, for example, while the irradiation control unit 10 operates the X-ray tube 5 in accordance with the irradiation conditions set by the operation unit 8 to move the subject M placed on the top 3. X
Expose the line. A detection signal processing unit 11 that converts a detection signal output from the image intensifier 6 with X-ray irradiation into an electric signal by the television camera 6a and performs amplification and the like.
Is sent to the television monitor 12 via TV monitor 12
An X-ray fluoroscopic image of the subject M is projected on the screen of (1).

When the X-ray transmission image shooting is determined based on the observation result of the X-ray fluoroscopic image and the like, the flash shooting control unit 13 operates the flash shooting device 7 according to a shooting command from the operation unit 8 and the like. Execute film shooting of an X-ray transmission image. This rapid photography apparatus 7 is capable of both cassette photography and cassette photography. Hereinafter, the rapid shooting device 7 which is a feature of the present invention will be described in detail.

<First Embodiment> As shown in FIGS. 1 and 2, the main body case 14 of the flash photography device 7 extends between the top plate 3 and the image intensifier 6 at right angles to the longitudinal direction of the top plate 3. And is extended so as to extend rightward in the longitudinal direction on the front side of the top plate 3 so as to form an L-shape in plan view. SA,
A film carriage standby position (hereinafter abbreviated as a standby position) SB, a film shooting position (hereinafter abbreviated as a shooting position) SC through which exposure X-rays pass, and a film carriage cassette standby area in order from the left front to the back. (Hereinafter abbreviated as a standby area) SD.

As shown in FIGS. 1 and 3, the loading position SA is where the supply magazine 15 for storing unphotographed film for cassette shooting and the storage magazine 16 for storing (collecting) photographed film are loaded. is there.

The foremost stand-by position SB is where the film carriage 17 for cassette photographing stands by. As will be described later, in this embodiment, a cassette holding frame 18 for holding a cassette 19 for cassette photographing is connected to the film carriage 17 so as to be stored and pulled out.

The photographing position SC at the center is where the cassette holding frame 18 for holding the cassette carriage 19 for cassette filming and the cassette 19 for cassette photographing stays during photographing of the X-ray transmission image.

Then, the standby area SD on the innermost side is
The film carriage 17 and the cassette holding frame 18 connected to the film carriage 17 have a space (depth) in which the film carriage 17 and the cassette holding frame 18 holding the cassette 19 can be held at the time of cassette shooting. Is waiting.

The supply magazine 15 and the storage magazine 16 are loaded by being manually inserted from the near side. When the storage magazine 16 is loaded slightly to the left, the upper lid slides to the right and the film outlet 15a of the supply magazine 15 is opened. And a film entrance 16a of the storage magazine 16 is opened.

As shown in FIG. 4, the film carriage 17 has wheels 21 and travels along a guide rail 22 from a standby position SB to a standby area S via a photographing position SC.
It is configured to be able to reciprocate on the transfer path leading to D. In addition, the film carriage 17 includes the driven pulleys 23a to 23a.
3c and a belt 25 wound around the driving pulley 24, the driving unit 27 including a motor 26 capable of rotating in the normal and reverse directions rotates the driving pulley 24 in the normal and reverse directions. It is configured to reciprocate in the transfer path. Driven pulley 23
a to 23c, driving pulley 24, belt 25, motor 2
6. The driving section 27 corresponds to the driving mechanism in the present invention. The drive mechanism is provided with a rotary encoder and a potentiometer (not shown) so that the movement position of the film carriage 17 can be detected.
The film carriage 17 can be stopped at an appropriate stop position.

In FIG. 4A, the standby position SB
The slide member 28 laid on the bottom of the film carriage 17 in the running direction of the film carriage 17 is provided on the guide rail 22 on the loading position SA side for loading and unloading the film when the film carriage 17 stands by at the standby position SB. Notch 2
This is to prevent the carriage 21 from tilting due to the wheel 21 dropping into the wheel 9. When the wheels 21 are provided at the height positions indicated by the solid lines in FIG.
7, the guide rail 22 on the loading position SA side moves the film in and out of the film carriage 17 when the wheel 21 is provided at the height position indicated by the two-dot chain line in FIG. It is not necessary to provide the notch 29 in the guide rail 22 on the loading position SA side, so that the guide rail 22 on the loading position SA side has the opening 14a of the main body case 14 like the other guide rail 22. In this case, the sliding member 28 is unnecessary.

As shown in FIG. 3, an unphotographed film F is pulled out from the supply magazine 15 to the film carriage 17 waiting at the standby position SB, and is shown from the guide 31 through the access hole 32 of the film carriage 17. Are transported into the film carriage 17 and set by the various feed rolls. Conversely, after cassette shooting is completed, the standby position SB
The film F, which has been photographed, is sent out from the inlet / outlet 32 of the film carriage 17 and returned to the storage magazine 16 via the guide 33 to be collected.

As shown in FIG. 4, the cassette holding frame 18 is formed in a U-shape, and the left and right side holding portions 18a penetrate the film carriage 17 so that they can be stored and pulled out. And is integrally connected to the film carriage 17. Side holding part 18a
A flange 18b is provided on the base end side of the film carriage 17, and a coil spring 41 is fitted into the side holding portion 18a between the rear side surface of the film carriage 17 and the flange 18b on the rear side of the film carriage 17. In addition, the front holding portion 18c on the front side of the cassette holding frame 18 has
A pressing member 18d is attached. As shown in FIG. 4A, the cassette holding frame 18 is
7, the cassette 19 is placed on the left and right side holding portions 18a, and the urging force of the coil spring 41 causes the pressing member 18d to press and urge the front side surface of the cassette 19 toward the film carriage 17 side. , The cassette 19 is held by the cassette holding section 18.

The storage and withdrawal of the cassette holding frame 18 with respect to the film carriage 17 and the setting and removal of the cassette 19 with respect to the cassette holding frame 18 pulled out of the film carriage 17 are performed by an operator. The cassette holding frame 18 is inserted into and retracted from the film carriage 17 in the SB by opening an opening 14 provided in the front side of the main body case 14.
a (see FIGS. 1 and 4). Further, the cassette holding frame 1 is inserted through the opening 14a.
The cassette 19 held at 8 is moved between inside and outside of the main body case 14. That is, the film carriage 1
The cassette holding frame 18 pulled out from the main body 7 is
The cassette 19 is set outside the main body case 14 so that the cassette 19 can be set and removed from the cassette holding frame 18 so that the cassette 19 can be set on the cassette holding frame 18 located in the main body case 14. -It is easier to set and remove the cassette 19 than to remove it.

In consideration of holding cassettes 19 of various sizes in the cassette holding frame 18, FIG.
As shown in FIG. 3, the cassette 19 having the minimum width CW on the side orthogonal to the transfer path of the cassette 19 when held in the cassette holding frame 18 is placed in the side holding section 1 of the cassette holding frame 18.
The cassette holding frame 18 is connected to the film carriage 17 so that the space HW between the both side holding portions 18a is determined so that the cassette holding frame 8a can be placed on the film carriage 17. As shown in FIG. 5 (b), when setting the cassette 19 in the cassette holding frame 18, the operator places the plate-like member 42 over both side holding portions 18a so as to bridge the plate-like member 42. The cassette 19 may be placed on the member 42, and the cassette 19 may be held by the cassette holding frame 18 by pressing and pressing the pressing member 18 d. In the configuration shown in FIG. 5B, the space HW between both side members 18a can be freely determined without being restricted by the size of the cassette 19, and the width CW of the cassette 19 smaller than the space HW can be determined afterwards. It is also possible to flexibly cope with a case where it is necessary to perform cassette photographing using the camera. In the configuration shown in FIG. 5B, when the cassette photographing is completed and the cassette holding frame 18 is stored in the film carriage 17, the plate member 20 is moved by the operator.
Is removed.

Further, an aperture for transmitting X-rays may be provided in the plate-shaped member 42 in order to enable X-ray fluoroscopy by the image intensifier 6 during cassette photographing. This is described in FIGS. 11, 12, and 2 below.
The same applies to 0 and the like. Further, the two rod-shaped members are placed so as to span the both side holding portions 18a, and the two rod-shaped members and the both side holding portions 18a form a "well" shape in plan view. The cassette 19 may be placed and held thereon.

At times other than cassette photographing, FIG.
The cassette holding frame 18 is housed in the film carriage 17 as shown in FIG. As a result, the cassette holding frame 18 does not protrude from the main body case 14 at times other than the cassette photographing, and thus hinders the subject M from getting on and off the top plate 3 and hinders a technician or the like from working near the apparatus. There is no such thing.

Further, the cassette 19 is mounted on the cassette holding frame 18.
The cassette holding frame 18 is connected to the film carriage 17 so that the film surface of the film accommodated in the cassette 19 when the camera is held and the film surface of the film set on the film carriage 17 are at the same height. Have been. This relationship is similarly maintained at the photographing position SC. At the photographing position SC, the distance between the film surfaces of both films of the film carriage 17 and the cassette 19 and the focal point of the X-ray tube 5 becomes the same. There is no need to change shooting conditions between shooting and cassette shooting, and shooting can be performed under the same conditions.

The cassette 19 is moved to the side holding portion 18a.
When the cassette 19 is directly mounted on the side holding portion 18a, the film surface in the cassette 19 in a state where the cassette 19 is directly mounted and held on the side holding portion 18a, and the film carriage 17
The cassette holding frame 18 is connected to the film carriage 17 so that the same film surface is at the same height as that in FIG.
When the cassette 19 is held via the plate-like member 42 as shown in (b), the film surface in the cassette 19 in a state where the cassette 19 is placed and held on the plate-like member 42, The cassette holding frame 18 is connected to the film carriage 17 so that the film surface in the carriage 17 is at the same height.

Next, X by the apparatus of the first embodiment having the above configuration is
A cassette-less shooting operation and a cassette shooting operation of a line transmission image will be described. First, the case of cassette shooting will be described with reference to the operation explanatory diagram of FIG. 6 and the flowchart of FIG. FIG. 6 is an explanatory view of the operation of the rapid-moving photographing device 7 together with the film carriage 17 and cassette holding frame 18.
FIG. 5 is a plan view showing positions A to C and a standby area SD in FIG.

[Step S1] As shown in FIG. 6A, an unphotographed film FA is supplied from the supply magazine 15 loaded at the loading position SA to the film carriage 17 at the standby position SB and set. You.

[Step S2] As shown in FIG. 6B, the motor 26 is driven to rotate in the forward direction and the film F is rotated.
The film carriage 17 in which A is set is moved from the standby position SB to the shooting position SC and stopped. At this time, the stop position of the film carriage 17 is appropriately adjusted according to the size of the film FA, and the film FA is positioned at the center of the shooting position SC.

[Step S3] Subsequently, X-rays are emitted from the X-ray tube 5, and an X-ray transmission image of the subject M is transferred to the film FA of the film carriage 17 at the photographing position SC.

[Step S4] As shown in FIG. 6C, the motor 26 is driven to rotate in the reverse direction immediately after the film photographing is completed, and the film carriage 17 is moved to the photographing position S.
After moving from C to the standby position SB, it is stopped.

[Step S5] As shown in FIG. 6D, the photographed film FA is stored from the film carriage 17 into the storage magazine 16 at the loading position SA.

[Step S6] If an instruction for cassette shooting has been issued, the above steps S1 to S6 are performed.
5 is repeated. If the instruction for cassette shooting has not been issued, the shooting is completed.

Next, the cassette photographing operation will be described with reference to the operation explanatory diagram of FIG. 8 and the flowchart of FIG. The operation explanatory diagram of FIG. 8 is a plan view showing the positions SA to SC and the standby area SD in the rapid photography device 7 together with the film carriage 17 and the cassette holding frame 18.

[Step T1] First, as shown in FIG. 8A, the cassette holding frame 18 is pulled out from the film carriage 17 at the standby position SB by the operator.

[Step T2] As shown in FIG. 8 (b), outside the main body case 14, the operator places the cassette 19 containing the unphotographed film FB.
Is set and held in the cassette holding frame 18 pulled out from the film carriage 17.

[Step T3] As shown in FIG. 8 (c), the motor 26 is driven to rotate in the forward direction to hold the film carriage 17 and the cassette holding frame 18 connected to the film carriage 17 and the cassette holding frame 18. The cassette 19 is moved to the waiting area SD and stopped there, where it stands by.

[Step T4] When a cassette photographing start command is issued, as shown in FIG.
6 is rotated in the reverse direction, and the cassette 19 is moved to the photographing position S.
The film carriage 17, the cassette holding frame 18, and the cassette 19 are moved in the photographing position SC direction until they are positioned at C. At this time, the stop position of the film carriage 17 in the standby area SD is appropriately adjusted according to the size of the cassette 19 and the size of the film FB in the transfer path direction,
The film FB is located at the center of the shooting position SC.

[Step T5] The X-ray is emitted from the X-ray tube 5 and the film F of the cassette 19 at the photographing position SC is obtained.
An X-ray transmission image of the subject M is imprinted on B.

[Step T6] As shown in FIG. 8 (e), immediately after the film photographing is completed, the motor 26 is driven to rotate in the reverse direction until the film carriage 17 is positioned at the standby position SB. The cassette holding frame 18 and the cassette 19 are moved in the standby position SB.

[Step T7] As shown in FIG. 8 (f), outside the main body case 14, the operator removes the cassette 19 together with the photographed film FB from the cassette holding frame 18.

[Step T8] If there is a command to perform cassette photographing, the above-described steps T2 to T7 are repeated.

[Step T9] If there is no instruction for cassette shooting, the cassette holding frame 18 is stored in the film carriage 17 by the operator as shown in FIG.

In the first embodiment, the cassette holding frame 18 is connected to the film carriage 17 so as to be able to be stored and pulled out by penetrating the film carriage 17. For example, as shown in FIG. , Wheels 21
The cassette holding frame 18 may be attached to the guide frame 51 such that the cassette holding frame 18 can be housed and pulled out of the guide frame 51 so as to connect the cassette holding frame 18 to the film carriage 17.

In FIG. 10, a mounting portion 18e for mounting the cassette 19 on the cassette holding frame 18 and a guide portion 18f for guiding three sides of the cassette 19 are provided.
e, the guide portion 18f and the film carriage 1
The cassette 19 is held by the cassette holding frame 18 by being guided by the front side surface of the cassette 7. The cassette holding frame 18 pulled out of the guide frame 51 by a coil spring or the like is urged toward the film carriage 17 side to cause the cassette 19 to move. May be held in the cassette holding frame 18. The cassette holding frame 18 is configured so as to be pulled out further from the guide frame 51 in a state where the cassette holding frame 18 is drawn to the maximum, so that the cassette holding frame 18 does not fall off the guide frame 51. Also,
In FIG. 10, a grip portion 18 that is gripped by the operator when the cassette holding frame 18 is stored and pulled out of the guide frame 51 is provided. In addition, for example, rails are attached to the left and right side surfaces of the film carriage 17 and slide rails slidably fitted to these rails are configured as a part of the cassette holding frame 18. Can be connected to the film carriage 17 so as to be stored and pulled out.

Further, in the modification of FIG. 10, the cassette 19 may be held in the cassette holding frame 18 via a holding member 52 as shown in FIG. The holding member 52 is configured by attaching a guide portion 54 to a plate-like member 53. In the configuration of FIG.
When holding the cassette 19, the operator places the plate member 53 on each of the mounting portions 18e of the cassette holding frame 18, and also guides each of the guide portions 18f and the film carriage 17.
The guide member 54 guides the holding member 52 to the cassette holding frame 18, places the cassette 19 on the plate-like member 53 of the holding member 52, and guides and holds the guide member 54 on the side surface. Then, the cassette 19 is held by the cassette holding frame 18. After the cassette photographing is completed, the cassette holding frame 18 is moved to the film carriage 17.
When stored in the holding member 52,
Is removed from the cassette holding frame 18. With this configuration, as shown in FIG. 11B, it is possible to hold the cassette 19 having the width CW described in FIG. 5A smaller than the interval HW ′ in FIGS. If a plurality of types of the holding members 52 are prepared in accordance with the cassettes 19 of various sizes, the cassettes 19 of various sizes can be held.

When the cassette 19 is held without using the holding member 52, the cassette 1 is held by using the holding member 52.
In each case of holding the cassette 9, the cassette holding frame 18 to the film carriage 17 is set so that the held film surface in the cassette 19 and the film surface in the film carriage 17 are at the same height. The connection height is adjusted.

In the first embodiment, the cassette holding frame 18 is connected to the film carriage 17 so as to be housed and pulled out. For example, as shown in FIG. 12, the cassette holding frame 18 is configured as a tray type. The cassette holding frame 18 may be detachably connected to the film carriage 17 by detachably connecting the connecting portion 18h of the cassette holding frame 18 to the connecting portion 17a of the film carriage 17a. In this configuration, a tray-type cassette holding frame 18 is attached to the film carriage 17 at the time of cassette shooting, and a cassette 19 is placed and held on the cassette holding frame 18 outside the main body case 14. Then, the cassette 19 is moved into the main body case 14 through the opening 14a of the main body case 14, and cassette photographing is performed as in the first embodiment. At times other than cassette photographing, the cassette holding frame 18 is removed from the film carriage 17 so as not to be in the way.
In this configuration, if a plurality of tray-type cassette holding frames 18 are prepared in accordance with cassettes 19 of various sizes, it is possible to cope with holding cassettes 19 of various sizes.

In addition, for example, modifications can be made as follows, and each of these modifications is described in a second embodiment described later.
The embodiment can be similarly modified.

In the embodiments described above and below, the supply magazine 15 and the storage magazine 16 are
, But as shown in FIG.
The supply magazine 15 and the storage magazine 16 are located below the film carriage 17, and the loading position SA is at the standby position S.
It may be configured to be below B.

In the embodiments described above and below, the supply magazine 15 and the storage magazine 16 are separate components, but the supply magazine 15 and the storage magazine 16 may be integrated.

Needless to say, the X-ray fluoroscopic apparatus of the present invention can be applied to an X-ray fluoroscopic apparatus having a digital image processing system for processing a signal from the image intensifier 6 and forming an image.

<Second Embodiment> Next, the structure of a device according to a second embodiment will be described with reference to FIGS.

In the apparatus of the second embodiment, a first retreat area SE is provided in the body case 14 on the back side of the photographing position SC provided on the back side of the standby position SB, and the first retreat area SE is provided. A second retreat area SF is provided on the back side of the SE.

The loading position SA, the standby position SB, and the photographing position S
C is the same as in the first embodiment.

In the first retraction area SE, the film carriage 17 waits while the cassette 19 is waiting near the shooting position SC on the standby position SB until a cassette shooting start command is issued at the time of cassette shooting. Where it is.

The second retreat area SF is where the film carriage 17 waiting in the first retreat area SE is moved when a cassette photographing start command is issued.

Further, in the second embodiment, the cassette holding frame 18 is separated from the film carriage 17 and can be connected to the film carriage 17 with the photographing position SC interposed therebetween when photographing the cassette.

Specifically, rails 61 are attached to the left and right side surfaces of the film carriage 17, and these rails 6
The slide rails 62 are fitted and connected to the slide rails 62 so that they can be stored and pulled out, and the cassette holding frames 18 are fitted and connected to these slide rails 62 so that they can be stored and drawn out. However, the slide rail 62 is configured so as to be pulled out further from the rail 61 of the film carriage 17 so as not to fall out from the rail 61 of the film carriage 17, and similarly, the cassette holding frame 18 is connected to the slide rail 62. The slide rail 62 is configured so as not to be pulled out further from the slide rail 62 in a state where the slide rail 62 is pulled out to the maximum.

At the time of cassette photographing, the slide rail 62 is pulled out from the rail 61 of the film carriage 17 and the cassette holding frame 18 is pulled out from the slide rail 62 as shown in FIG.
The cassette holding frame 18 is separated from the film carriage 17 and connected to the film carriage 17 with the shooting position SC interposed therebetween.

Further, in cases other than cassette photographing, FIG.
6B, the slide rail 62 is housed in the rail 61 of the film carriage 17 and the cassette holding frame 18 is housed in the slide rail 62, so that the slide rail 62 and the cassette holding frame 18 are filmed. It is stored in the carriage 17.

The cassette holding frame 18 is formed in a U-shape, and left and right side holding portions 18 i are fitted and connected to the slide rail 61 so as to be housed and pulled out. A magnetic material such as iron is attached to the lower surface of the front holding portion 18j on the near side. And
The side holding portion 18i and the front holding portion 18j are provided with a mounting portion 18k for mounting the cassette 19 and a guide portion 181 for guiding the side surface of the cassette 19. As shown in FIG. 16A, the cassette 19 is
k, the guide portion 181 and the slide rail 6
The side surface of the cassette 19 is guided by the front side surface of the cassette 2 and is held by the cassette holding frame 18. In FIG. 16, similarly to FIG. 10, the holding portion 18 g is attached to the cassette holding frame 18.
Is provided. Also in this second embodiment,
The cassette 19 may be held on the cassette holding frame 18 using the holding member 52 described with reference to FIG.

An electromagnet 70 is provided at an appropriate position, which will be described later, of the standby position SB. The other configuration is the same as that of the first embodiment, and the detailed description is omitted.

Next, an explanation will be given of the cassette radiography operation and the cassette radiography operation of the X-ray transmission image by the apparatus of the second embodiment. Since the cassette radiography operation is the same as that of the first embodiment, it will be described. Omitted.

The cassette photographing operation by the apparatus of the second embodiment will be described with reference to the operation explanatory diagrams of FIGS. 17 and 18 and the flowchart of FIG. FIG.
7 and FIG. 18 are plan views showing the positions SA to SC and the areas SE and SF in the flash photography device 7 together with the film carriage 17 and the cassette holding frame 18 in a plan view.

[Step U1] First, as shown in FIG. 17A, the cassette holding frame 18 is pulled out by the operator from the slide rail 62 housed in the rail 61 of the film carriage 17 at the standby position SB.

[Step U2] As shown in FIG. 17 (b), outside the main body case 14, the operator places the cassette 19 containing the unphotographed film FB by the operator.
Is set and held in the cassette holding frame 18 pulled out.

[Step U3] The electromagnet 70 is driven, the motor 26 is driven to rotate in the forward direction, and the film carriage 17, the cassette holding frame 18 connected to the film carriage 17 via the slide rail 62, and the cassette holding frame The cassette 19 held at 18 is moved in the first retreat area SE direction. During this movement, FIG.
As shown in (c), the magnetic material of the front portion 18j of the cassette holding frame 18 is attracted by the magnetic force of the electromagnet 70, and the cassette holding frame 18 is stopped, while the film carriage 17 is moved in the first retreat area SE direction. And the slide rail 62 is pulled out of the film carriage 17, and as shown in FIG. 17D, when the film carriage 17 is positioned in the first retreat area SE, the movement of the film carriage 17 is stopped. . In this state, the cassette 19 held in the cassette holding frame 18 is in the standby position S
It is located near the shooting position SC on the B side. And
When the movement of the film carriage 17 is stopped, the driving of the electromagnet 70 is stopped, and the cassette holding frame 18 can be moved. The electromagnet 70 is provided at a position where the cassette 19 held by the cassette holding frame 18 is stopped at a position near the shooting position SC on the standby position SB side. When the size of the cassette 19 in the transfer path direction is different, the stop position of the film carriage 17 in the first retreat position SE is appropriately adjusted, and the cassette 19 of various sizes is photographed at the standby position SB. Position S
It may be located near C.

[Step U4] When a cassette photographing start command is issued, the motor 26 is driven to rotate in the forward direction as shown in FIG.
Is moved to the second retreat area SF and stopped. In this state, the cassette 19 is located at the shooting position SC. At this time, the stop position of the film carriage 17 in the second retreat area SF is appropriately adjusted according to the size of the cassette 19 and the size of the film FB in the direction of the transport path, and the film FB is moved to the center of the photographing position SC. Is located.

[Step U5] The X-ray is emitted from the X-ray tube 5 and the film F of the cassette 19 at the photographing position SC is obtained.
An X-ray transmission image of the subject M is imprinted on B.

[Step U6] As shown in FIG. 18 (f), immediately after the film photographing is completed, the motor 26 is driven to rotate in the reverse direction until the film carriage 17 is positioned at the standby position SB. The cassette holding frame 18 and the cassette 19 are moved in the standby position SB.

[Step U7] As shown in FIG. 18 (g), the cassette 19 together with the photographed film FB is removed from the cassette holding frame 18 outside the main body case 14 by the operator.

[Step U8] If there is a command to perform cassette photographing, the above steps U2 to U7 are repeated. However, since the slide rail 62 is pulled out of the film carriage 17 in the first cassette photographing, step U3 is performed in the second and subsequent cassette photographing.
Does not need to drive the electromagnet 70.

[Step U9] If there is no instruction for cassette photographing, the cassette holding frame 18 and the slide rail 62 are housed in the film carriage 17 by the operator as shown in FIG.

In the above two embodiments, the electromagnet 70 is provided so that the slide rail 62 is pulled out from the film carriage 17 while the film carriage 17 is moved from the standby position SB to the first retreat area SE. However, in step U1, the operator may pull out the cassette holding frame 18 from the slide rail 62 and pull out the slide rail 62 from the film carriage 17. In this case, the electromagnet 7
It is not necessary to provide 0.

In the second embodiment, the slide rail 62 is connected to the film carriage 17 so that the slide rail 62 can be housed and pulled out.
8 are connected so that they can be stored and pulled out.
As shown in FIG. 12, a slide rail 62 is connected to the film carriage 17 so as to be retractable, and a front portion 62a is attached to the slide rail 62. A tray type cassette holding frame 18 similar to FIG. The cassette holding frame 18 may be configured to be detachably connected to the film carriage 17. In this configuration, at the time of cassette photographing, the connecting portion 18h of the tray-type cassette holding frame 18 is connected to the connecting portion 62b of the front portion 62a, and the cassette holding frame 18 is attached to the front portion 62a. , Slide rail 62
The cassette holding frame 18 is removed from the front portion 62a so that the cassette holding frame 18 does not interfere with the cassette holding frame 18, and the slide rail 62 is stored in the film carriage 17.

[0091]

As is apparent from the above description, according to the first and second aspects of the present invention, since the film surface height at the photographing position is the same between cassette photographing and cassette photographing, In shooting, shooting can be performed under the same conditions without changing the setting of shooting conditions. Further, since the transport path of the film carriage and the cassette is one without congestion, the apparatus can be downsized and the configuration around the transport mechanism can be simplified. Further, since the cassette holding frame is connected to the film carriage, the movement of the film carriage and the cassette can be constituted by only one drive mechanism, and the structure of the drive mechanism can be simplified.

According to the first aspect of the present invention, since the film carriage and the cassette holding frame connected to the film carriage can be made to stand by in the stand-by area, the cassette can be made to stand by near the photographing position. When a cassette shooting start command is issued, the cassette can be immediately moved to the shooting position.

According to the second aspect of the present invention, the cassette holding frame is configured to be separated from the film carriage and connectable to the film carriage with the photographing position interposed therebetween, and the film carriage is moved to the far side of the first retreat area. Is provided, the cassette can be kept near the shooting position, and the cassette can be immediately moved to the shooting position when a cassette shooting start command is issued. .

According to the third aspect of the present invention, the cassette holding frame is connected to the film carriage so as to be able to be stored and pulled out of the film carriage.
At the time of cassette photographing, the cassette holding frame is pulled out of the film carriage, and the cassette can be held in a state where the cassette holding frame is protruded from the main body case. This facilitates the work of setting and removing the cassette with respect to the cassette holding frame. In addition, when the cassette is not being photographed, the cassette holding frame is stored in the film carriage, so that the cassette holding frame protrudes from the main body case, thereby obstructing the subject from getting on and off the top plate, and an engineer or the like. It doesn't get in the way when you work nearby.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an entire configuration of an example of an X-ray fluoroscopic apparatus according to the present invention.

FIG. 2 is a partial plan view showing an arrangement of a main body case of the rapid-fire shooting device in the first embodiment.

FIG. 3 is a longitudinal sectional view showing a configuration around a film carriage and a magazine at a standby position.

FIG. 4 is a plan view and a side view showing a configuration around a film carriage.

FIG. 5 is a diagram illustrating a configuration for holding cassettes of various sizes in a cassette holding frame, and a configuration of a modified example thereof.

FIG. 6 is an explanatory diagram of an operation at the time of cassetteless photographing by the apparatus of the first embodiment.

FIG. 7 is a flowchart illustrating a flow of an operation performed by the apparatus of the first embodiment at the time of cassette shooting.

FIG. 8 is an explanatory diagram of the operation of the apparatus of the first embodiment at the time of cassette photographing.

FIG. 9 is a flowchart illustrating a flow of an operation performed when the cassette is photographed by the apparatus of the first embodiment.

FIG. 10 is a longitudinal sectional view and a plan view showing a configuration of a modified example of the cassette holding frame of the first embodiment.

FIG. 11 is a view showing a configuration for holding cassettes of various sizes in a cassette holding frame according to a modification of FIG. 10;

FIG. 12 is a perspective view illustrating a configuration of a modification in which the cassette holding frame of the first embodiment is detachably connected to the film carriage.

FIG. 13 is a longitudinal sectional view showing a configuration of a modified example around a film carriage and a magazine.

FIG. 14 is a partial plan view showing an arrangement of a main body case of the rapid-fire shooting device in the device of the second embodiment.

FIG. 15 is a longitudinal sectional view illustrating a configuration of a cassette holding frame and the like of the device of the second embodiment.

FIG. 16 is a plan view and a side view showing a configuration of a cassette holding frame and the like of the device of the second embodiment.

FIG. 17 is an explanatory diagram of an operation of the apparatus of the second embodiment at the time of cassette photographing.

FIG. 18 is an explanatory view of the operation of the apparatus of the second embodiment at the time of cassette photographing.

FIG. 19 is a flowchart illustrating a flow of an operation performed when the cassette is photographed by the apparatus of the second embodiment.

FIG. 20 is a plan view showing a configuration of a modification in which the cassette holding frame of the second embodiment is detachably connected to the film carriage.

[Explanation of symbols]

 3 Top plate 5 X-ray tube 6 Image intensifier 7 Rapid shooting device 14 Main case 15 Supply magazine 16 Storage magazine 17 Film carriage 18 Cassette holding frame 19 Cassette 26 Motor 27 Drive unit 62 Slide rail SA Loading position SB Standby position SC Shooting Position SD Standby area SE First save area SF Second save area

────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-60-159842 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G03B 42/02-42/04

Claims (3)

(57) [Claims] 1. A top plate on which a subject is placed, an X-ray tube and an image intensifier arranged at opposing positions sandwiching the top plate, and a rapid photography apparatus capable of cassette photography and cassette telephotography. In the X-ray fluoroscopic apparatus provided, the main body case of the flash photography apparatus is substantially parallel to a longitudinal direction of the top plate at a lower portion of the top plate including an X-ray transmission region through which X-rays from the X-ray tube pass. The main body case is provided with a film magazine for supplying / storing a film between the main body case and a film carriage for cassette photographing. And a standby position where the film carriage waits when the cassette is held while carrying the film between the position and the film magazine at the loading position. An imaging position is provided in the X-ray transmission area corresponding to a direction crossing the tabletop from the position,
A stand-by area for cassette photographing is provided on the back side from the photographing position, and a film carriage disposed so as to be able to reciprocate along a transfer path from the stand-by position through the photographing position to the stand-by area, A drive mechanism for reciprocating the film carriage in the transfer path so that the film carriage can be stopped at an appropriate stop position in the transfer path, so that the height of the film surface of the film carriage matches the height of the film surface of the cassette. A cassette holding frame for holding a cassette for cassette shooting is integrated with the film carriage,
An X-ray fluoroscope, wherein the X-ray fluoroscope is detachably connected to the cassette and moves the film carriage and a cassette holding frame connected to the film carriage from the standby position to the standby area during cassette photographing. Shooting equipment. 2. A top plate on which a subject is placed, an X-ray tube and an image intensifier arranged at opposing positions sandwiching the top plate, and a rapid photography apparatus capable of cassette photography and cassette telephotography. In the X-ray fluoroscopic apparatus provided, the main body case of the flash photography apparatus is substantially parallel to a longitudinal direction of the top plate at a lower portion of the top plate including an X-ray transmission region through which X-rays from the X-ray tube pass. The main body case is provided with a film magazine for supplying / storing a film between the main body case and a film carriage for cassette photographing. And a standby position where the film carriage waits when transporting the film between the film magazine at the loading position and a film carriage in the direction traversing the top plate from the standby position. An imaging position is provided in the X-ray transmission region, and a first evacuation region is provided on the back side from the imaging position, and a second evacuation region is provided on the back side from the first evacuation region. A film carriage disposed reciprocally along a transfer path from a standby position to the second evacuation area via the shooting position and the first evacuation area; and A drive mechanism for reciprocating in the transfer path so as to be able to stop at the stop position of the cassette, and holding the cassette for cassette photographing so that the height of the film surface of the film carriage matches the height of the film surface of the cassette. A cassette holding frame is integrally or detachably connected to the film carriage, and the cassette holding frame is sandwiched between the photographing position and the film carrier. X-ray fluoroscopic apparatus, characterized in that the coupleable constructed on the film carriage away from di. 3. The X-ray fluoroscopic apparatus according to claim 1, wherein the cassette holding frame is connected to the film carriage so as to be able to be stored and pulled out of the film carriage. Fluoroscopy equipment.