JP2565428Y2 - Automatic cassette positioning device and bed for X-ray photography - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a cassette positioning device for positioning a film cassette at a predetermined position during X-ray photography regardless of the size of the film cassette, and an X-ray having such a device.
The present invention relates to a bed for radiography.

[0002]

2. Description of the Related Art Conventionally, a cassette positioning device of this type includes a device for positioning a cassette between two parallel guide bars which are pulled in opposite directions by a strong spring and at the same time, facing a corresponding end in the device. There is a device that moves a cassette on a loading plate by rollers driven by a motor. Further, the bed for X-ray imaging includes a device comprising a top plate on which a patient is placed, a case provided below the top plate, and a gantry on which a cassette is placed and moved on a rail in the case. And so on.

[0003]

In the above-described conventional cassette positioning apparatus, it is difficult to quickly and accurately position the cassette at a predetermined position, and an X-ray image is blurred due to a large distance between the patient and the cassette. And so on.
Further, in the above-mentioned conventional X-ray imaging bed, there is a risk that a photographed image may be blurred because the examinee is far away from the cassette, and that the cassette cannot be quickly attached or taken out.

In view of the above-mentioned problems, the present invention allows the film cassette to be quickly and accurately positioned at a predetermined position regardless of its size, and allows the film cassette to be quickly discharged to the insertion slot after the photographing is completed. Cassette positioning device to obtain a clear X-ray image, and a clear X
An object of the present invention is to provide an X-ray imaging bed which can obtain a radiographic image and can easily load and discharge the cassette.

[0005]

In order to achieve the above object, an automatic cassette positioning device of the upper end positioning type according to the present invention comprises a case body, a vertically moving device and a left and right moving device for the cassette. Are provided with cassette insertion ports on both the left and right sides, and the above-mentioned vertical transfer device is vertically moved at the same speed on both lower sides in the case body so that the upper end of the inserted cassette can be transferred to the upper end of the case body. A vertically movable carriage that moves is provided, and a supporting member of the cassette is provided between the two carriages. The left and right transfer device is configured to transfer the cassette transferred to the upper part of the case body to the center of the case body. The left and right moving carriages are provided on both upper sides of the case body, and the pushing pieces are provided on the outer side of the base plate so as to be able to protrude and retract from the surface of the base plate. It is configured by providing a moving distance detecting mechanism for controlling the so that.

Further, the center positioning type cassette automatic positioning apparatus according to the present invention comprises a case body, a front-rear transfer device for the cassette and a left-right transfer device. The above-mentioned front-rear transfer device reciprocates before and after the pushing piece is erected on the upper surface of the base plate at the front center of the case so that the inserted cassette can be transferred to the center of the case in the front-rear direction. A front-to-rear moving carriage is provided, and on the rear left and right sides,
The rear-side front and rear traveling carts that reciprocate back and forth at the same speed are provided respectively, and the supporting members of the cassette are erected across the both trucks. The left and right transfer device is provided so that the cassette transferred to the center in the vertical direction of the case can be transferred to the center in the left and right direction of the case. On both sides of the center of the
Left and right moving carriages that reciprocate at the same speed are provided on the left and right sides. Pushing pieces are provided on the outer side of the base plate so that they can protrude and retract from the surface of the base plate, and the back side has the same moving distance inward And a moving distance detecting mechanism for controlling the moving distance is provided.

The X-ray imaging couch according to the present invention comprises a couch frame, a slider, and an automatic cassette positioning device. The couch frame has a top plate having a width and a length on a top surface of which a patient can lie down. Along with the top plate, a pair of rails are provided in the longitudinal direction below the top plate, and the slider is formed so as to be slidable on the rails, and when the mounting table of the cassette automatic positioning device is lowered, There is provided an elevating device which is inclined several degrees with respect to the rail surface and is formed so as to be horizontal when ascending. The cassette automatic positioning device is provided with a cassette transfer device in the case body, and the inserted cassette is moved in the case body. Is formed so that it can be positioned at a predetermined position, and its bottom is fixed on the mounting table so that the upper surface thereof can approach the lower surface of the top plate when ascending.

[0008]

SUMMARY OF now to the upper end position type cassette positioning apparatus according to claim 1, the cassette positioning device
The holding tube can be moved up and down on the support standing upright on the base
Fixed to the front side of the holding tube of the X-ray imaging table
To use . When the cassette a is inserted into the case through the right insertion slot 2, the lower end of the cassette is placed on the support member 16 of the vertical transfer device 7, and the upper right side of the cassette is placed on the right-and-left movable carriage 51. At this time, both left and right
The pushing piece 35 of the movable cart 23 is inserted when the cassette is inserted.
It is immersed in the base plate so as not to disturb entry . When the sensors 38 and 39 detect that the cassette has been correctly inserted, the vertically movable trolley 10 operates to raise the supporting member 16 on which the cassette is mounted, but the upper end of the cassette is moved to the sensing plate 17 at the upper end of the case body. When the button is pressed, the micro switch 18 is operated, and the up-down moving carriage 10 stops. Thus, the pushing pieces 35 of the left and right moving carts 23 stand upright on the base plate at the same time, and the right and left moving carts 23 push the right side of the cassette with the pushing pieces 35, and the left and right moving carts 23 become empty. In this state, the carts move inward, and when the pushing pieces 35 of the left and right moving carts 23 hit the left side of the cassette, the carts 23 stop temporarily. Thus, since the right and left moving cart 23 moves while pressing the cassette, the moving distance is shorter than that of the left and right moving cart 23, so that the center of the cassette is slightly shifted to the right from the center of the case body. The right and left moving carts 23 are moved to the left by the moving distance detecting mechanism 33 until the moving distances of the two become the same, so that the center of the cassette coincides with the center of the case body. At the same time, the fact that the cassette has been correctly positioned is displayed on the front panel 6 of the lid. Then, the examinee presses the body against the surface of the case body and X
Since a line image is taken and the front surface of the cassette is very close to the back surface of the lid of the case body, a clear image can be obtained. When the X-ray sensor senses the end of the X-ray generation and the end of the X-ray generation, the cassette discharge starts. That is, the right and left trolley 23 moves toward the original position with the pushing piece 35 immersed, and at the same time, the left and right trolley 23 moves with the pushing piece 35
The cassette is moved to the right while pressing the cassette, and stops at a position where the right end of the cassette protrudes from the right insertion slot 2 by about 3 cm. Then, both up-and-down moving carts 10 descend and the supporting members 1
6 stops at the position where it has moved to the original position, and after the cassette is pulled out, the left and right moving carriage 23 moves to the original position. The above series of operations can be automatically controlled by the microcomputer of the electronic control unit 37. In the above case, the case where the cassette is inserted and ejected from the right insertion slot 2 has been described. However, the cassette may be inserted and ejected from the left insertion slot 2. Is the reverse of the above description. or,
Insert through the right slot and eject through the left slot or left
Insert from the side insertion slot and eject from the right insertion slot.
In some cases, initial settings are made in advance by the electronic control unit 37.
It is good. Thus, the pushing provided on each of the left and right moving carts 23
Either left or right insertion
The cassette can be automatically inserted and ejected from the mouth 2 as well .

Next, a description will be given of a center positioning type cassette automatic positioning apparatus according to a second aspect of the present invention. When the cassette is inserted into the case through the right insertion slot, the lower end of the cassette is placed on the support member 63 of the front-rear transfer device 50, and the upper right side of the cassette is placed on the right and left movable carriage 65.
At this time, the pushing pieces 67 of the both right and left moving carts 65 are
Immerse in the base plate so that it does not hinder insertion when inserting the te
Have . When the sensor detects that the cassette has been correctly supplied, the front longitudinal carriage 51 is empty, and the rear longitudinal carriage 61 simultaneously moves toward the center while pressing the cassette. Thus, when the front end of the cassette hits the pushing piece 53 of the front longitudinal carriage 51, the cassette temporarily stops, but the traveling distance detection mechanism 59 moves the rear longitudinal carriage 61 forward until the traveling distances of both carriages become the same. hand,
Align the center of the cassette in the front-back direction with the center of the case body. Next, the pushing pieces 67 of each of the left and right moving carts 65 stand upright on the base plate at the same time, while the right and left moving carts 65 push the right side of the cassette with the pushing pieces 67, and the left and right moving carts 65 are empty. When the pushing piece of the left and right moving carriage 65 hits the left side of the cassette, the two carriages temporarily stop, but the right and left and right moving carriages are moved by the moving distance detection mechanism until the moving distances of the both become equal. To the left so that the center of the cassette in the left-right direction matches the center of the case body. At the same time, the fact that the cassette has been accurately positioned at the center of the case body is displayed on the front panel 6 of the lid body. X-ray imaging is performed in a state where the examinee brings the body close to the surface of the lid of the case, and a clear image without blur is obtained because the surface of the cassette is close to the back of the lid. When the X-ray sensor senses the end of the X-ray generation, the ejection of the cassette starts. That is, the front and rear movable carts 51 and 61 are simultaneously moved outward to stop at the same time when the rear front and rear movable carriage 61 arrives at the original position, and the front front and rear movable cart 51 returns to the original position at the forefront and stops. next,
The right and left moving carriage 65 has a pushing piece 67 for discharging the cassette.
The trolley 65 is moved toward the original position in a state of being immersed in the base plate so as not to hinder the outgoing movement. At the same time, the left and right moving cart 65 moves to the right while pushing the left side of the cassette with the pushing piece 67, and the right side of the cassette Stop when the end protrudes about 5 cm from the right insertion slot. When the cassette is pulled out, the left and right moving carriage 65 moves to the original position. In the above case, the case where the cassette is inserted and ejected from the right insertion slot 2 has been described. However, the cassette may be inserted and ejected from the left insertion slot 2. Is the reverse of the above description. Also, right insertion slot
From the left insertion slot or the left insertion slot.
And eject it from the right slot.
It is only necessary to make initial settings in the electronic control unit 37 in advance.
No. Thus, the pushing piece 67 provided on each of the left and right moving carts 65 is
By being able to appear and disappear, from either the left or right insertion slot 2
The cassette can be inserted and ejected automatically .

The bed for X-ray imaging according to the third aspect will be described. A cassette a of a predetermined size is inserted into the case body 93 from the insertion opening 94 inclined by several degrees, and is accurately positioned. When confirmed, the cassette positioning device 92 is raised and leveled by the elevating device 76, and the upper surface thereof is held in a state of being close to the lower surface of the top plate 71. Conventionally,
A heavy and wide type such as the cassette positioning device 92
It is technically difficult to move up and down smoothly while keeping it horizontal
However, as in the present invention,
To keep it level when climbing
The cassette is loaded and the cassette is heavy and wide.
The placement device 92 can be raised and lowered smoothly . When the slider 73 is moved below the X-ray imaging part of the examinee on the top plate to perform X-ray imaging, the examinee and the cassette are very close to each other, so that a clear image is obtained. An image is obtained. When the X-ray irradiation is completed after the imaging, the elevating device 76
Is lowered to the original position, and the photographed cassette is automatically ejected from its insertion port 94. Thus, cassette positioning
The insertion opening of the device 92 is inclined several degrees with respect to the rail surface.
The insertion slot is easy to see and the heavy cassette
Insertion and discharge can be performed quickly with one hand .

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the accompanying drawings. Embodiment 1 FIGS. 1 to 6 show a cassette positioning device of an upper end positioning type suitable for use in a vertical or upright position. Sign 1
Is a rectangular case body, which is provided with insertion openings 2 for cassettes a on both left and right sides thereof, a transparent body 4 is formed on the upper surface except for the periphery, and a grid plate 5 is bonded to the back surface. The lid 3 is attached. Reference numeral 6 denotes a display panel indicating the type of cassette a loaded, STANDBY, READY, and the like.

Numeral 7 is a vertical transfer device for the cassette a,
Lower guide rails 8, 8 extending from the center to the lower end are laid on both left and right sides of the case body 1, respectively, and rack rails 9, 9 are arranged side by side with the guide rails 8 at a predetermined interval. . Reference numerals 10 and 10 denote respective up-and-down moving carts.
A motor 14 and a guide roller 15 to which the motor 3 is fixed are provided, and the spool gear 13 is engaged with the rack rail 9 and the guide roller 15 is engaged with the lower guide rail 8.
Reference numeral 16 denotes a support member having an L-shaped cross section for supporting the lower end portion of the cassette. The support member 16 is formed to have a length extending between the insertion ports 2 and 2 and extends over the vertically movable carts 10 and 10. The support member 16 reciprocates up and down as the vertically movable carts 10 and 10 move up and down. When the upper end of the cassette a pushes the sensing plate 17, the micro switch 18 is activated to activate the motor 14. To stop the cassette a
At the upper end of the case body 1 for a predetermined time.

Reference numeral 20 denotes a left and right transfer device for the cassette a. A pair of upper guide rails 21 are laid on the upper portion in the case body 1 and extend to both left and right end portions. Rails 22 are provided side by side. 2
Reference numerals 3 and 23 denote left and right movable carts, respectively. A contact surface 25 of the cassette a is formed on the surface of each base plate 24, guide rollers 26 are provided at four corners on the back surface, and a motor is provided at the center. 27, a spool gear 29 and a disk hub 30 having small holes 31 provided at regular intervals on a disk-shaped peripheral portion are fixed to a rotating shaft 28 thereof. Thus, the spool gear 29 of each of the left and right movable carts 23 is
The guide rollers 26 are respectively engaged with the guide rails 21 so that the guide rollers 26 can reciprocate a predetermined distance on the guide rails 21 left and right. Reference numeral 33 denotes a left-right moving cart 2
3 is a moving distance detecting mechanism provided for each of the carts 23, comprising the disk hub 30 and the photo sensor 32, and counting the number of light beams passing through the small holes 31 of the rotating disk hub 30 by the photo sensor 32. Can be detected, and the detection signals are sent to the electronic control unit 37 to be compared with each other.
3 can be automatically controlled so that the moving distance is the same. Reference numeral 35 denotes a pushing piece of the cassette a, the base of which is fixed to the rotating shaft of the rotary solenoid 36, and the tip end of which is formed in a through hole 3 provided on the outside of the base plate 24.
4, it can come and go from the base plate surface. In addition,
The pushing piece 35 is formed such that the protruding height thereof is lower than the thickness of the cassette a. In FIG. 4, reference numeral 37 denotes an electronic control unit, which is a micro switch 18, a photo sensor 32 of a moving distance detecting mechanism 33, cassette detecting sensors 38 and 39, and an X-ray detecting sensor (not shown).
The microcomputer 14 automatically controls the motors 14 and 27 of the movable carts 10 and 23 based on a signal from the microcomputer 40. Reference numeral 40 denotes a protection plate of the electronic control unit 37.

(Embodiment 2) FIG. 7 shows a center positioning type cassette automatic positioning apparatus, which can be used in a horizontal state with a vertical bear.
Although it is possible, a case in which it is used in a horizontal state will be described . Reference numeral 50 denotes a front-rear transfer device for the cassette a, in which a front-rear transfer truck 51 is provided at a front central portion in the case body 1 and rear-rear transfer trucks 61, 61 are provided on both right and left rear portions. is there. In the front-rear moving carriage 51, the pushing piece 53 of the cassette a is erected on the upper surface of the base plate 52, and the spool gear 5 is attached to the rotating shaft on the rear surface as shown in FIG.
4 and a motor 56 provided with a disk hub 55 and a guide roller 57 are provided.
The upper part can be moved in the front-back direction. Reference numeral 59 denotes a moving distance detecting mechanism of the carriage 51, and its configuration is the same as that of the first embodiment. Reference numeral 60 denotes a rack rail. In addition, the rear front-rear moving carts 61, 61
The upper carriage can be moved back and forth at the same speed, and a support member 63 of a cassette a formed in a length extending between the insertion ports 2 and 2 is mounted on both carriages 61, 61, and a lower end of the cassette a is provided. The part can be supported. In addition, each truck 61,
A moving distance detecting mechanism (not shown) is provided on the back surface of the front and rear movable carts 51 similarly to the front and rear movable carts 51, and the moving distances of the front and rear movable carts 51 and 61 are automatically set to be the same. Is controlled. Reference numeral 64 denotes a left and right transfer device for the cassette a disposed in the center of the case body 1 and has the same configuration as that of the first embodiment.
65 can be moved in the left-right direction along the guide rails 66, 66, and is automatically controlled so that the moving distance of each of the carts 65, 65 to the inside is the same. Note that 67
Indicates a pushing piece of the cassette a, and 68 and 69 indicate detection sensors of the cassette a. Thus, the case body 1
The cassette a inserted therein is automatically positioned at the center of the case body 1 by the front-rear transfer device 50 and the left-right transfer device 64. In the above embodiment, the horizontal position, that is, the lying position
Has been described, but as in the first embodiment,
It may be used in a standing position, in which case, before and after each
The transfer carts 51 and 61 will move in the vertical direction.
You.

(Embodiment 3) Next, FIGS. 9 to 11 show a bed for radiography according to the present invention. Reference numeral 70 denotes a bed frame, and a transparent resin top plate 71 having a width and a length on which the examinee b can be placed is provided on an upper surface thereof.
And a pair of rails 72, 72 are provided below the top plate 71 in the longitudinal direction. Reference numeral 73 denotes a slider that moves on the rail 72. Rollers 75 are provided at the corners of a rectangular box 74, and a pair of mounting bases 77, 77 are provided inside the box 74 on the upper side. Is fixed. The lifting device 76
The crossbars 79, 79 are respectively mounted on both ends of the support shaft 78, and the lower ends of the inner plates 84, 84 are respectively pivotally mounted 85 inside the box 74, and the upper ends thereof are mutually connected. The lower surface of the mounting plate 77 is slidable by a connection 86, and the upper ends of the outer plates 87, 87 are pivotally connected 88 to the lower surface of the mounting table 77, and the lower ends thereof are interconnected. 8
9 so that the upper surface of the box 74 can be slid. Thus, the shaft 78 and the shaft of the linear motor 81
82 via a crank mechanism 83 and a shaft
The crank rod 80 supports the support shaft 78 with the horizontal movement of 82.
So that the shaft 78 can be raised and lowered at the same time
I have. Therefore, each mounting base 77 moves up and down the support shaft 78.
It moves up and down with
Although it is inclined several degrees, it is horizontal when climbing.
ing. Reference numeral 90 denotes a stopper for the connecting rod 89, and reference numeral 91 denotes a microswitch for controlling the linear motor 81. Reference numeral 92 denotes a cassette a mounted on the mounting base 77.
In the automatic positioning device, a cassette a transfer device (not shown) having the same structure as that shown in the second embodiment is provided in the case body 93, and the cassette a inserted from the left or right insertion port 94 is provided. Can be automatically positioned at the center of the case body 92. Since the configuration is the same as that of the second embodiment, the detailed description is omitted. Thus, the automatic positioning device 92 is inclined about 6 degrees with respect to the surface of the rail 72 when the elevating device 76 is lowered, but becomes horizontal after ascending, and the upper surface thereof is placed on the top plate 7 of the bed frame 70.
1 can be approached. Reference numeral 95 denotes a stopper for temporarily fixing the slider 73 to the rail 72.

[0016]

[Effects of the Invention] The present invention has the following excellent effects. (1) According to the configuration of the first aspect, in the cassette automatic positioning device according to the present invention, cassettes of various sizes can be accurately and quickly positioned at the center of the upper end in the case body. Thus, X in the vertical, or standing, state
Radiography can be easily performed . (2) According to the configuration of the second aspect, in the cassette automatic positioning device according to the present invention, cassettes of various sizes can be accurately and quickly positioned at the center of the case body. Vertical, ie standing, and horizontal, ie supine
X-ray photography in the state can be easily performed together . (3) According to the configuration of the first or second aspect, in the cassette automatic positioning device according to the present invention, the surface of the inserted cassette can be brought very close to the examinee, so that a clear image can be obtained. (4) In the cassette automatic positioning device according to the first or second aspect of the present invention, the right and left movable carriage is provided.
Formed so that it can protrude and retract from the surface of the base plate.
To automatically insert and eject the cassette.
At the same time, insert and discharge work
It is useful for X-ray technicians to save labor in their work because they can be performed individually. (5) In the X-ray imaging bed according to the present invention, the upper surface of the cassette can be very close to the examinee, so that a clear image can be obtained. Also,
Heavy and wide cassette positioning with cassette loaded
It is possible to lift the order device Smoothing's, of various sizes
The cassette can be inserted and ejected quickly with one hand
In addition, there is an advantage that the insertion port is easy to see , and it is useful for labor saving of the X-ray technician.

[Brief description of the drawings]

FIG. 1 is a plan view of an automatic cassette positioning device according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a plan view showing a state in which a lid is removed.

FIG. 4 is a partial sectional view taken along line AA in FIG. 3;

FIG. 5 is a sectional view taken along line BB in FIG. 3;

FIG. 6 is a rear view of the left-right moving carriage.

FIG. 7 is a plan view of an automatic cassette positioning apparatus according to another embodiment with a lid removed.

FIG. 8 is a sectional view taken along line CC in FIG. 7;

FIG. 9 is a side view of the bed for X-ray imaging.

FIG. 10 is a plan view of a slider.

FIG. 11 is a sectional view taken along line DD in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case body 2 Insertion opening 7 Vertical transfer device 10 Vertical transfer trolley 16 Support member 20 Left and right transfer device 23 Left and right transfer trolley 33 Movement distance detection mechanism 35 Pushing piece 37 Electronic control device 50 Front and rear transferring device 51 Front side forward and backward moving trolley 53 Pushing piece 59 Moving distance detecting mechanism 61 Rear forward and backward moving carriage 63 Support member 64 Left and right transfer device 65 Left and right moving carriage 67 Pushing piece 70 Bed frame 71 Top plate 72 Rail 73 Slider 76 Elevating device 77 Mounting base 92 Cassette automatic positioning device 93 Case body 94 Insert mouth

Claims (3)

(57) [Scope of request for utility model registration] 1. A case body, comprising a cassette vertical transfer device and a left and right transfer device, wherein the case body is provided with cassette insertion openings on both left and right sides, and the vertical transfer device includes:
In order to transfer the upper end of the inserted cassette to the upper end of the case body, up and down moving carts are provided on both lower sides of the case body which move up and down at the same speed, and a supporting member of the cassette is erected over both carts. The left and right transfer device is
In order to transfer the cassette transferred to the upper end of the case body to the center part of the case body, left and right moving carts are provided on both upper sides in the case body, and a pushing piece is provided on the outer side of the board of both carts from the surface of the board. An upper end positioning type cassette automatic positioning apparatus, wherein a moving distance detecting mechanism for controlling the moving distance of both carriages to be the same is provided on a rear surface of the base plate so as to be able to protrude and retract. 2. A case body, a cassette front and rear transfer device and a left and right transfer device, wherein the case body is provided with cassette insertion ports on both left and right sides, and the front and rear transfer device is
As can transport the inserted cassette in the longitudinal direction central portion of the case body, the front central portion of the case body, the base plate upper surface
A front-rear moving carriage is provided for reciprocating before and after the pushing piece is erected, and rear-rear moving carriages for reciprocating back and forth at the same speed are provided on both left and right sides of the rear, respectively. Along with the supporting member, a moving distance detecting mechanism for controlling the moving distance to the inside to be the same is provided on the back side of the two front and rear moving carts, respectively. In order to transfer the cassette transferred to the center part in the front-rear direction to the center part in the left-right direction of the case body, a left-right moving carriage that reciprocates right and left at the same speed is provided on both sides of the center part in the case body. The center is characterized in that a pushing piece is provided on the outer side of the plate so as to be able to protrude and retract from the surface of the base plate, and a moving distance detecting mechanism for controlling the moving distance inward is the same on the back side. Positioning type Tsu Te automatic positioning device. 3. A couch frame, a slider and a cassette automatic positioning device, wherein the couch frame has a top plate having a width and a length on which an examinee can lie down, and a couch top provided below the couch top. Has a pair of rails in the longitudinal direction,
The slider is formed so as to be slidable on a rail, and provided with an elevating device formed such that the mounting base of the cassette automatic positioning device is inclined several degrees with respect to the rail surface when descending and is horizontal when ascending. The cassette automatic positioning device is provided with a cassette transfer device in the case body, formed so that the inserted cassette can be positioned at a predetermined position in the case body, and fixed with the bottom portion on the mounting table and raised. A bed for X-ray imaging, wherein an upper surface thereof can be made to approach a lower surface of the top plate.