JPH03143431A - X-ray diagnostic apparatus - Google Patents

Abstract

PURPOSE:To simplify a constitution for moving a photographing apparatus, setting with high accuracy the photographing apparatus at a specified photographing position and to perform an X-ray photographing with good accuracy by substituting a movement of a top plate in the left and right direction for a movement of a photographing apparatus in the left and right direction. CONSTITUTION:A control apparatus is furnished with a detecting device 26 and a controlling part 27. The detecting device 26 detects the direction of a force in the left and right direction applied to a spot photographing 7 by an operator and it is set close to a handle of the photographing apparatus 7. namely, the handle is set so as to be movable in the left and right direction and when the operator performs a movement in the left and right direction with the handle, the detecting device 26 is actuated to detect the direction of the force applied to the handle. The controlling part 27 outputs a command to a driving circuit 28 receiving a signal from the detecting device 26 and controlling driving of a motor 18 for driving a top plate set on a bed 1 in the left and right direction so as to move the top plate 2 in the reverse direction to the direction of the force applied on the operator spot photographing apparatus 7.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a proximity operation type X-ray diagnostic apparatus.

(Prior Art) In a close-operation type X-ray diagnostic apparatus, a top plate on which a subject is placed is moved electrically, and an imaging device is manually moved by an operator.

The conventional configuration of this type of X-ray diagnostic apparatus will be explained with reference to FIG. A top plate 2 is provided on a bed 1 so as to be movable in the vertical and horizontal directions with respect to the subject placed on the top plate 2,
This top plate 2 is moved by an electric drive mechanism provided on the bed 1. Further, the bed 1 is provided with a vertically movable frame 3 for a photographing device so as to be movable in the vertical direction, and a horizontally movable frame 4 is movable horizontally on the vertically movable frame 3. A tower 5 is attached to one end of the left-right moving frame 4, and a lifter 6 is provided so as to be movable in the front-back direction.

The lifter 6 is provided with a spot photographing device 7 and an imaging device 8. The vertically movable frame 3, the horizontally movable frame 4, and the lifter 6 are manually moved by the operator. The X-ray tube (not shown) is on bed 1.
Provided for.

(Problem to be Solved by the Invention) In the X-ray diagnostic apparatus having such a configuration, in order to set the spot imaging device 7 at a predetermined imaging position during X-ray imaging, the vertical movement frame 3, the horizontal movement frame 4, and Although the lifter 6 is used to move the spot imaging device in each three-dimensional direction, as a result of the movement operation, the spot imaging device cannot be stopped at the desired imaging position with the required precision, making it difficult to perform accurate X-ray imaging. There were times when the device could not be used.

The present invention has been made based on the above-mentioned situation '11, and an object of the present invention is to provide an X-ray cutting device that simplifies the configuration for moving the imaging device and can move the imaging device with high precision.

[Structure of the Invention] (Means and Effects for Solving the Problems) The inventor of the present invention has repeatedly studied the movement of a spot imaging device in an X-ray diagnostic apparatus.

As a result, it has been found that the reason why the conventional apparatus is unable to move the photographing device to the photographing position with high precision is the following. That is, conventionally, in order to move the spot photographing device 7 in three-dimensional directions, the vertical movement frame 3,
The horizontal movement frame 4 and the lifter 6 are combined, and these three members support the loads of the spot photographing device 7 and the imaging device 8 and move in the respective directions.

Therefore, as each member moves in three directions, vibration occurs at the contact portion where each member movably contacts. The weight of the spot photographing device 7 and the imaging device 8 acts on the contact portions of each member, causing deflection.

Errors, vibrations, deflections, etc. that occur at each contact portion of each member accumulate in proportion to the number of contact portions and affect the transportation accuracy of the spot photographing device.

In particular, as shown in FIGS. 10 and 11, the left-right moving frame 4 supports the loads of the spot photographing device 7 and the imaging device 8 at its ends and moves by using a combination of many rollers 13 and rails 14. , is supported on the vertically movable frame 3, and since there are many contact parts with the vertically movable frame 3, the above-mentioned phenomenon is more likely to occur.

Therefore, the inventor determined that this problem occurs because there are many members used to move the spot imaging device in three-dimensional directions, and there are many contact points between the members. However, it has been found that the conventional problems can be solved by supporting the spot photographing device with a small number of members and moving it in three-dimensional directions.

As mentioned above, since problems often occur in the lateral movement frame, we believe that it is most effective to abolish the lateral movement frame, and from this point of view, we are considering realizing a configuration that eliminates the lateral movement frame. After much consideration.

From this, we focused on the fact that the top plate on which the subject is placed was moved left and right, and when it was necessary to move the suboto imaging device left and right, if we moved the top plate, it was cut into a large plate. We focused on the fact that the position of the subject can be changed relative to the spot imaging device, and the same effect as moving the spot imaging device left and right can be obtained. Movement of the top plate in the left-right direction is necessary for performing X-ray photography.

The X-ray diagnostic apparatus of the present invention includes a bed, a bed on which a subject is placed, a top plate left-right drive mechanism for moving the bed horizontally, a vertically moving body provided on the bed, and a vertically movable body provided on the bed. control for controlling the driving of the top plate left and right drive mechanism by detecting the direction of the horizontal force applied by the operator to the installed tower, the photographing device installed on the lifter installed on the tower, and the photographing device applied by the operator; The invention is characterized in that it comprises a device.

The control device also includes a detector that detects the direction of the force applied by the operator to the imaging device, and a detector that detects the direction of the force applied to the imaging device against the top left and right drive mechanism based on the signal from the detector. is equipped with a control section that outputs a command to move the top plate in the opposite direction.

In other words, when it is necessary to move the imaging device in the left-right direction, the direction of the force applied by the operator to the imaging device is detected by a detector in the control device, and the control unit receives a signal from this detector. In response to a command, the top plate left-right drive mechanism moves the Osaka in the opposite direction to the direction of the operator's force, so the position of the subject placed on the top plate can be changed relative to the imaging device.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

An embodiment of the X-ray diagnostic apparatus of the present invention will be described based on FIGS. 1 to 8.

The configuration of the X-ray diagnostic device will be explained.

The groove bottom of the entire device is shown in FIGS. 1 to 3, and the same parts in the figures as in FIG. 9 are given the same reference numerals. The bed 1 is provided with a top plate horizontal movement frame 15, and this top plate left and right movement frame 1 is provided.
A top plate 2 is provided on the upper surface of 5.

The top plate left-right moving frame 15 is provided so as to be movable in the left-right direction A, for example, by a combination of a rail 16 provided thereon and a roller 17 provided on the bed 1. The top plate left-right movement frame 15 is moved by a top plate left-right drive mechanism, as shown in FIGS. 6 and 7, for example. A motor 18 is installed on one side of the bed, and a chain wheel is installed on the other side. The connecting body 22 attached to the dynamic crusher 15 is connected.

When the motor 18 is driven to rotate the chain wheel 20, the chain 21 rotates at the same time, and the top plate left-right movement frame 15 moves in the left-right direction A via the connecting body 22. The top plate 2 moves integrally by the movement of the top plate left-right movement frame 15. Further, the top plate 2 is provided on the upper surface of the top plate horizontal movement frame 15 so as to be movable in the vertical direction B, and is moved in the vertical direction B by an electric top plate vertical drive mechanism (not shown).

The bed 1 is provided with a vertically movable frame 3, and as shown in FIGS. 4 and 5, this vertically movable frame 3 moves in the vertical direction B by a combination of rollers 23 provided on itself and rails 24 provided on the bed 1.
It is movable. A tower 5 is provided at one end of the vertically movable frame 3, and a lift rod is provided on the tower 5 so as to be movable in the front-rear direction C. The lifter 6 is provided with a spot photographing device 7 and an imaging device 8. The photographing device 7 is provided with a handle 25 for manual movement operation.

Next, the control device will be explained with reference to FIG.

This control device includes a detector 26 and a control section 27. The detector 26 detects the direction of the force in the left-right direction A applied to the spot photographing device 7 by the operator, and is provided close to the handle 25 of the photographing device 7, for example. That is, for example, if the needle 25 is provided so that it can be displaced in the left-right direction, and the operator moves the needle 25 in the left-right direction, the detector 26 will operate, and the direction of the force applied to the needle 25 will be detected. It shall be. The control unit 27 receives a signal (No. 5 from the detector 26) and controls a drive circuit 28 that controls the drive of the motor 18 for driving the top plate left and right provided on the bed 1, which is applied to the spot photographing device 7 by the operator. It outputs a command to move the top plate 2 in the opposite direction to the direction of the force.

The operation of the X-ray diagnostic apparatus configured in this way will be explained.

When performing X-ray photography, in order to place the spot imaging device 7 at a predetermined imaging position, the operator may
Holding the handle 25, the photographing device 7 is moved in the vertical direction B and the longitudinal direction C.

When it is necessary to move the spot photographing device 7 in the left-right direction A, when the operator holds the handle 25 provided on the photographing device 7 and applies a leftward or rightward force, the handle 2
5 moves in accordance with the direction of the operator's force, and a detector 26 provided close to the handle 25 operates. The detector 26 detects the direction of the force applied by the operator to the handle 25 and outputs a signal to the control unit 27 . The control unit 27 receives the signal from the detector 26 and controls the force applied by the operator to the spot photographing device 7 to a drive circuit 28 that controls the drive of the motor 18 for driving the top left and right provided on the bed 1. Top plate 2 in the opposite direction
Outputs a command to move the . When the drive circuit 28 drives the motor 18 based on the command from the control section 27, the top plate 2 moves in the opposite direction to the direction of the force applied to the handle 25 by the operator.

As a result, the position of the subject placed on the top plate 2 changes relative to the spot photographing device 7, resulting in the same state as when the photographing device 7 is moved in the required direction.

Incidentally, it goes without saying that the top plate 2 can be moved in the left-right direction independently of the photographing device 7.

Therefore, in this way, the left and right direction A of the spot photographing device 7 is
When it is necessary to change the position of the spot photographing device 7, the top plate 2 is moved without moving the photographing device 7, and the spot photographing device 7 is moved. Therefore, the horizontal movement frame for moving the spot imaging device 7 in the left-right direction is eliminated, and in order to move the imaging device 7 to a desired location, it is sufficient to provide only the vertical movement frame 3 and the lifter 6, which is different from the conventional device. Comparatively, it can be handled with fewer parts. Therefore, the number of contact portions that contact and support members for moving the imaging device 7 is reduced.

The vibration generated at each contact portion of each member due to the movement of the photographing device 7 can be significantly suppressed compared to the electric flux of the photographing device 7 and the imaging device 8. This allows for high movement accuracy in position.

It should be noted that the present invention is not limited to the embodiments described above, and can be applied in various forms. For example, the mechanism for detecting the direction of the force applied by the operator to the imaging device is not limited to the embodiment.

By replacing the left-right movement of the photographing device with the left-right movement of the top plate, the configuration for moving the photographing device can be simplified, and the photographing device can be set at a predetermined photographing position with high accuracy, resulting in highly accurate X-rays. Line photography can be performed.

[Brief explanation of the drawing]

1 to 8 show an embodiment of the present invention, FIGS. 1 to 3 are diagrams showing the configuration of an X-ray diagnostic apparatus, FIGS. 4 and 5 are diagrams showing a vertically moving frame, 1. Figures 6 and 7 show the top plate left and right movement mechanism, Figure 8 shows the control device, Figures 9 to 11 show the conventional example, and Figure 9 shows the X
FIGS. 10 and 11 are diagrams showing the configuration of the line diagnosis apparatus, and are diagrams showing vertical movement frames and horizontal movement frames. 1...Bed, 2...Top plate, 7...Photography device, 15
. . . Top plate left/right movement piece, 18 . . Motor, 26 . . . Detector, 27 . . . Control unit.

Claims (2)

[Claims] (1) A bed, a top plate on which the subject is placed, a top plate lateral drive mechanism that moves the top plate left and right, a vertically moving body provided on the bed, and a tower provided on this vertically moving body. , a photographing device installed on a lifter installed in this tower,
An X-ray diagnostic apparatus comprising: a control device that detects the direction of a force in the left and right direction applied to the imaging device by an operator and controls the drive of the top plate in the left and right directions. (2) The control device includes a detector that detects the direction of the force applied by the operator to the imaging device, and the direction of the force applied to the imaging device against the top left and right drive mechanism based on the signal from this detector. 2. The X-ray diagnostic apparatus according to claim 1, further comprising a control section that outputs a command to move the top plate in a direction opposite to that of the top plate.