JP2001104289A - X-ray fluoroscopic imaging equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide x-ray fluoroscopic imaging equipment in which movable parts of the equipment is automatically pulled back when it contacts with some matter and returned automatically to the contacted position by pushing reset switch. SOLUTION: The potentiometer encoder 12 outputs the position information to the data collection part 14 by moving the movable part 11 by operation lever 17. When the movable part 11 is contacted with some matter while moving, the touch sensor transmits the signal to the data collection part 14 and the CPU 15 pulls back and stops the movable part 11. The data collection part 14 memorizes the collected position information in the memory 16. After finishing the contacted matter, the movable part 11 returns to the contact position automatically by reading position information in the memory 16 by pushing the reset button WS 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an X-ray fluoroscopic apparatus, and more particularly to an operation of a movable section when the movable section of the apparatus detects any contact in an operable area.

[0002]

2. Description of the Related Art Among the X-ray fluoroscopy apparatuses, in particular, a circulatory organ diagnosis apparatus diagnoses arterial and vein of the whole body such as the blood vessels of the head and abdomen and lower limbs, mainly the arterial system, including the cardiovascular system.
In order to diagnose a patient by injecting a contrast agent into a blood vessel and observing a blood flow with an X-ray transmission image, it is necessary to be able to perform X-ray fluoroscopy and imaging of the whole body from various angles. The apparatus includes an X-ray tube, an image intensifier (referred to as II), an image receiving system including a TV camera, a holding device for holding them, a catheter bed, an X-ray high-voltage device, and a controller therefor. ing. In general, a circulatory organ diagnostic apparatus has a C-arm holding device so that the whole body can be seen through fluoroscopy from various angles, and is combined with a cantilevered catheter bed (examination table) to be inspected. It is possible to take a fluoroscopic position at any angle without moving the person.

FIG. 3 shows an X-ray fluoroscopic apparatus using a ceiling-suspended C-arm type holding device. From ceiling to ceiling traveling section 6
The C-shaped arm 3 is held by the C-shaped arm supporting portion 4 via the supporting portion 5 and the supporting portion 4a, and the supporting portion 4a of the C-shaped arm supporting portion 4 moves up and down on the supporting portion 5. Can be. An X-ray tube 1 is provided at both ends of the C-arm 3.
And the I.D. of the image receiving system facing the X-ray tube 1 via the mounting plate 3a. I. 2 and a TV camera 2a. X-ray tube 1 and C-shaped arm 3 with image receiving system
Slides in an arc shape in the channel of the C-shaped arm support portion 4, and the C-shaped arm support portion 4 attached to the support portion 4a moves the C-shaped arm The angle of the X-ray beam can be changed by rotating the arm 3 left and right. In addition, the I.V. I. 2 is a mounting plate 3a by a slide mechanism 3b.
You can slide up and down. I. I. 2 can be lowered to bring it closer to the subject and adhere to it. I. 2 can be raised to perform enlarged photographing. The examination table 8 (catheter bed) is composed of a bed 19 and a bed top 20. The bed 19 can adjust the height of the bed top 20. You can also move to

For example, when inspecting the head,
First, the subject is placed on the bed top 20. Next, the C-arm 3 is rotated so that the direction of the X-ray beam is adjusted to the direction of the part of the head to be subjected to fluoroscopic imaging. And I. I. 2 is brought closer to and closer to the head of the subject by the slide mechanism 3b. X-ray imaging is performed simultaneously with the injection of the contrast agent from a blood vessel such as an artery of the subject.

[0005]

The conventional X-ray fluoroscopic apparatus is constructed as described above. However, when performing fluoroscopic imaging, the target part of the imaging is rotated by rotating the C-arm 3 and moving the image receiving system. Approach the image receiving system to the subject,
Alternatively, the inspection is performed at a distance, but when the inspection site is the head or the chest (heart), it is necessary to take an image by closely contacting the image receiving system with the subject. For this reason, the X-ray tube 1 and the image receiving system (I.
I. 2) Move and approach, but when it detects that something has been touched in the original operable area, it automatically retreats the touched part linearly or retreats following the trajectory immediately before the touch. I have to. However, for example, if the target position for operating the movable part is a registered position in advance, it can be determined, but when it is operated manually, if it accidentally touches something and retreats, it moves the contact object etc. After the contact avoidance process described above, the manual operation to the desired position must be performed again. There is a problem that the user has to remember the complexity or the position where the operator has touched.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and when a movable part automatically retreats upon detection of contact, even if the operator does not need to remember the contact position, contact avoidance is possible. It is an object of the present invention to provide an X-ray fluoroscopic apparatus that can be similarly returned to an original position after taking a procedure.

[0007]

In order to achieve the above-mentioned object, an X-ray fluoroscopic apparatus according to the present invention comprises an X-ray tube and an X-ray detection system disposed opposite to the subject with the X-ray tube interposed therebetween. X-ray fluoroscopy that operates while holding, enables fluoroscopy and imaging from multiple directions, and automatically retracts the contacted part when the movable part of the device detects any contact in the operable area. In an imaging device, an operation lever for moving a movable portion of the device, a contact or non-contact sensor attached to the movable portion, and a position detection mechanism for detecting a position of the movable portion,
A data collection unit that collects position information from the sensor and the position detection mechanism; a memory that stores information from the data collection unit; and a position information from the position detection mechanism when the sensor is operated. A return switch for returning the movable portion to the original position. In addition,
As the position detection mechanism, for example, a potentiometer encoder can be used.

The X-ray fluoroscopic apparatus according to the present invention is configured as described above. By operating the operation lever of the apparatus, information on the position at which the movable portion is movable in the operable region is stored in a memory by a potentiometer encoder. When the movable part makes any contact and the sensor operates, the position is stored in the memory via the data collection unit. At that time, the movable part automatically retreats, but after taking the contact avoidance measure, by pressing the return switch, the movable part automatically follows the original trajectory again according to the position information stored in the memory, and Return to the specified position. And if you operate the operation lever,
It can move to the destination position.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of an X-ray fluoroscopic apparatus according to the present invention will be described with reference to FIGS. FIG.
FIG. 3 is a block diagram for explaining the operation of the X-ray fluoroscopic apparatus according to the present invention. This apparatus is a movable section 11 of a fluoroscopic table.
A potentiometer encoder 12, a touch sensor 13, a data collection unit 14 of a controller, a CPU 15,
It comprises a memory 16, an operation lever 17, and a return SW (return switch) 18. The movable unit 11 is located on the fluoroscopic table side, and includes an operation lever 17 provided on a control console 9a of the controller 9, a return SW (return switch) 18, and the like.
It is operated via the CPU 15. The movable section 11 of the fluoroscopic imaging table includes a movable section 11a that moves up and down by a slide mechanism 3b on a mounting plate 3a on which the image intensifier 2 is attached to the C-arm 3;
I. 2 and X-ray tube 1 attached to both ends
A movable part 11b that rotates in an arc along a channel of the mold arm support part 4, and a movable part in which the C-arm support part 4 holding the C-arm 3 rotates about the mounting axis of the support part 4a 11c and a movable portion 11d in which the support portion 4a moves up and down along the support portion 5.

The touch sensor 13 detects the obstacle by the movement of the movable part 11, particularly in the vicinity of the subject, so as to detect the front side of the image intensifier 2 and the front part of the X-ray tube 1 (examination). The touch sensor 13 is attached to that position because the table 8 side) and the like are to be contacted. The touch sensor 13 may be a contact type or a non-contact type. Information from the touch sensor 13 is input to the data collection unit 14 of the controller 9. Then, based on the signal, the CPU 15 automatically retreats the movable section 11 from the contact position along the approaching locus stored in the memory 16 and stops the movable section 11 at a predetermined distance.

The potentiometer encoder 12 is attached to each of the movable parts 11 (11a, 11b, 11c, 11d), and the position information of each movable part 11 is collected by the data collection part 14 of the controller 9, and the CPU 15 16 is stored. The trajectory of the movement of the X-ray tube 1 and the image intensifier 2 can be read from the position information from the potentiometer encoder 12 of each movable section 11 described above. The data collection unit 14 is provided with position information from a potentiometer encoder 12 attached to each movable unit 11, and contacts from a touch sensor 13 provided on the front side of the image intensifier 2 and the front of the X-ray tube 1. (Or non-contact) signals.

The CPU 15 reads the position information of each movable unit 11 from the data collection unit 14 and stores it in the memory 16. Further, the CPU 15 can read the trajectory of the movable section 11 based on the position information stored in the memory 16. The movable unit 11 receives a signal indicating that the touch sensor 13 has operated from the data collection unit 14.
Is automatically retracted from the contact position along the approaching locus stored in the memory 16 and stopped at a predetermined distance. The memory 16 stores the position information of the movable locus from the start of each movable unit 11 to the present. And return S
By the signal of W (return switch) 18, the CPU 15
The position information is read from the memory 16, and the position information is stored so that the movable portion 11 automatically retracted after the contact can be automatically returned to the original position along the same locus.

The operation lever 17 is provided on a control console 9a of the controller 9, and operates and rotates the operation lever 17 in the forward, backward, left, and right directions, and operates a push button and the like attached to the operation lever 17 so as to be operated. The movable part 11 can be operated.
By operating the operation lever 17, the movable part 11 is operated, and the front side of the image intensifier 2 or the front part of the X-ray tube 1 (on the examination table 8 side) is positioned near the subject. When the touch is made, the touch sensor 13 provided at that portion is operated, and a signal from the touch sensor 13 is input to the data collection unit 14, and the CPU 15 is stored in the memory 16 from the position where the movable unit 11 is touched. Automatically retreat along the approaching locus and stop at a predetermined distance.

When the touch sensor 13 is operated, the operator takes a contact avoidance measure such as moving a contact object, and then presses the return switch 18. , The stored trajectory position information of the movable portion 11 can be read out, and the movable portion 11 can be returned to the original contact position along the automatically stored trajectory. When the return switch 18 functions, an associated LED blinks.

Next, the operation of the present apparatus will be described with reference to the flowchart shown in FIG. First, the power of the apparatus is turned on to prepare each part at a predetermined position (operation standby). Then, the subject is placed on the examination table 8. The operator operates the control console 9a of the controller 9.
The upper operation lever 17 is gripped, and the front and rear, left and right, twist, push button and the like are operated (lever SW input) to move the movable part 11 (11a, 11b, 11c, 11d) of the fluoroscopic imaging table. At this time, if it is within the operable range (movable range), the movable section 11 moves to the target position (movable section operation). On the way,
If the touch sensor 13 operates (touch sensor ON),
The position information from the start of the movable unit 11 to the present time collected by the data collection unit 14 is stored in the memory 16 (the position information is stored in the memory). The movable section 11 automatically retracts and stops (automatic retract / stop). The operator presses the return switch 18 after taking contact avoidance measures such as moving a contact object (return switch 18).
-ON). The movable section 11 moves to the original position where the contact has been made according to the stored position information (moves to the contact position). The movable part 11 is moved to the target position by the operation lever 17 (target position) and stopped (stop). If the destination is registered, it will stop automatically.

In the above embodiment, when the return switch 18 is pressed, the movable unit 1 is automatically moved to the position where the touch sensor 13 is operated.
1 is set to return, but if the controller 9 can select a setting mode, for example, the touch sensor 13
If the mode in which the movable section 11 stops at the place without automatically retreating when the is operated is set, the operator can first select the mode and operate. The stored location information can be deleted or ignored in the settings.

In this embodiment, the case where the image intensifier 2 is used for the X-ray detection system has been described. However, even when a flat panel is used for the X-ray detection system instead of the image intensifier 2, The same can be done.

[0018]

The X-ray fluoroscopic apparatus according to the present invention is configured as described above. When the movable section (holding section) performs an automatic retreat operation during an operation or the like, immediately after treating a contact object, Then, the movable portion is returned to the original position, and the operation can be continued. In addition, even in the setting of the movable portion at a critical position where contact is expected, the trouble of the operator recognizing the automatic retreat and remembering and operating the position information one by one is eliminated. In particular, the present invention is useful for position setting using, for example, a one-handed manual operation handle, instead of fluoroscopy or imaging at a fixed position as in a routine inspection.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of an X-ray fluoroscopic apparatus according to the present invention.

FIG. 2 is a diagram showing an operation flowchart of the X-ray fluoroscopic apparatus of the present invention.

FIG. 3 is a diagram for explaining the operation of the X-ray fluoroscopic apparatus.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... X-ray tube 2 ... Image intensifier 3 ... C-arm 4 ... C-arm support part 5 ... Support part 6 ... Ceiling running part 7 ... Cable 8 ... Examination table 9 ... Controller 9a ... Control console 10 ... Monitor 11 movable part 12 potentiometer encoder 13 touch sensor 14 data collecting part 15 CPU 16 memory 17 operating lever 18 return switch

Claims (1)

[Claims] 1. An apparatus which operates while holding an X-ray tube and an X-ray detection system which is arranged opposite to a subject with the X-ray tube interposed therebetween. An operation lever for moving a movable part of the apparatus and an operation lever attached to the movable part in an X-ray fluoroscopic apparatus that automatically retracts the contacted part when it detects that the part has come into contact with something in the operable area. A contact or non-contact sensor, a position detection mechanism for detecting the position of the movable unit, a data collection unit for collecting position information from the sensor and the position detection mechanism, and a memory for storing information from the data collection unit An X-ray fluoroscopic apparatus, comprising: a return switch for reading out position information from a position detecting mechanism when the sensor operates from the memory and returning the movable portion to an original position.