JP2537163Y2 - X-ray fluoroscope - Google Patents

Description

[Detailed description of the invention]

[0001]

This invention provides an X-ray tube at one end of a C-arm and an image intensifier and an X-ray imaging device at the other end to perform X-ray fluoroscopy and X-ray imaging. The present invention relates to an X-ray fluoroscopic apparatus.

[0002]

2. Description of the Related Art The structure of a conventional X-ray fluoroscopic apparatus of this type will be described with reference to FIGS. FIG. 3 is an overall side view of the X-ray fluoroscopic apparatus in which a C-shaped arm is suspended from a ceiling, and FIG. 4 is a front view thereof. As shown in the figure, a base end of the suspension arm 1 is supported on the ceiling so as to be rotatable around the Y axis, and a distal end of the suspension arm 1 is provided with a C-shaped arm support member that is rotatable around the X axis. 2 are supported. A C-arm 3 is mounted on the C-arm support member 2 and is arranged on the X-axis and is rotatable about a Z-axis orthogonal to the X-axis. An X-ray tube 4 is attached to the front of one end of the C-arm 3. An image intensifier moving unit 6 for moving the image intensifier 5 in the Y-axis direction is attached to the front surface of the other end of the C-shaped arm 3. The image intensifier moving unit 6 has an image intensifier moving unit 6. An image intensifier 5 is attached via a fire support member 7 so as to face the X-ray tube 4. The image intensifier moving unit 6 is provided with, for example, a pinion that is rotated by transmitting the rotation of a motor (not shown) via a speed reducer, and a rack that meshes with the pinion is mounted in the Y-axis direction. By rotating the motor forward and backward, the image intensifier 5 is moved in the Y-axis direction via the image intensifier support member 7.
Further, between the image intensifier moving section 6 and the image intensifier 5, a film changer movement for moving a film changer 8, which is one of the X-ray imaging apparatuses, between an imaging position SP and a standby position TP. A section 9 is provided, and a film changer 8 is attached to the film changer moving section 9 via an L-shaped arm 10. The film changer moving unit 9 includes, for example,
A pinion, which is rotated by transmitting the rotation of a motor (not shown) via a speed reducer, is mounted, and a disc-shaped gear meshing with the pinion is mounted around an axis X ′ parallel to the X axis. The film changer 8 is moved between the photographing position SP and the standby position TP via the L-shaped arm 10 by rotating the motor forward and backward.

However, the X-ray fluoroscopic apparatus having the above-described configuration has the following problems. That is, the image intensifier 5 is attached to the front side of the end of the C-shaped arm 3 with the image intensifier moving unit 6 and the film changer moving unit 9 interposed therebetween. X-ray tube 4
C-arm 3
The effective length of the C-arm 3 for rotating the arm around the Z axis is shorter on the image intensifier 5 side (IL) than on the X-ray tube 4 side (XL). Therefore, in FIG.
When the mold arm 3 is rotated counterclockwise around the Z-axis, there is a problem that the operability of the apparatus is reduced.

Therefore, an X-ray fluoroscopic apparatus as shown in FIGS. 5 and 6 has been proposed. In this apparatus, in order to solve the above-described problem, the line CL connecting each end of the C-shaped arm 3 is shifted in the Z-axis direction from each end of the C-shaped arm 3 by a predetermined offset length OL. The X-ray tube 4, the image intensifier 5, and the film changer 8 are arranged to face each other. With this configuration, the effective length IL on the image intensifier 5 side
Can be made substantially the same as the effective length XL on the X-ray tube 4 side, so that C
The restriction on the rotation of the mold arm 3 around the Z axis can be eliminated. The C-arm support member 2 is supported by a drawer arm 11 attached to the suspension arm 1 so as to be rotatable around the X-axis. It is designed to be rotated around the X axis.

[0005]

However, the prior art having such a configuration has the following problems. That is, the X-ray tube 4 and the image intensifier 5 are shifted from each end of the C-arm 3 in the Z-axis direction by a predetermined offset length OL with respect to a line CL connecting each end of the C-arm 3. In this case, when the C-arm 3 is rotated around the X axis, the C-arm 3 interferes with the floor surface as shown in FIG. Will get up. This means that when the subject is sandwiched between the X-ray tube 4, the image intensifier 5, and the film changer 8 and X-ray fluoroscopy is performed, the operator inserts a catheter into the subject. This is because the position at which the C-arm 3 is arranged in the space must be lowered to some extent in order to facilitate the operation.

Therefore, a mechanism for moving the entire C-arm 3 up and down is incorporated in the device having such a configuration.
When rotating the C-type arm 3 around the X axis,
By moving the mold arm 3 upward, interference between the C-arm 3 and the floor surface is avoided. However, such an increase in extra operations not only complicates the configuration of the device, but also reduces the operability of the device. In addition, for the subject, the time during which the catheter or the like is inserted is prolonged, and the subject is given extra pain.

The present invention has been made in view of such circumstances, and has a simple structure that does not reduce the operability of the apparatus while reducing the restriction on the rotation of the C-arm about the Z-axis. An object of the present invention is to provide a fluoroscopic apparatus.

[0008]

The present invention has the following configuration to achieve such an object. That is, in the present invention, at least the C-shaped arm supporting member is rotatable around one horizontal axis (referred to as X axis), and the C-shaped arm supporting member is rotated around an axis (referred to as Z axis) orthogonal to the X axis. An X-ray tube is provided at one end of a C-arm rotatably mounted on the arm, and an image intensifier and X-ray imaging are provided at the other end of the C-arm so as to face the X-ray tube. In the X-ray fluoroscopic apparatus provided with a device, the C-arm is arranged on the X-axis, an X-ray tube is attached to the front of one end of the C-arm, and the front of the other end of the C-arm is mounted. Image intensifier moving means for bringing the image intensifier into and out of contact with the X-ray tube. The image intensifier is connected to the X-ray tube via connecting means. The connecting means has a mounting surface on the side opposite to the image intensifier moving means with the image intensifier interposed therebetween, and the mounting surface of the connecting means includes the X-ray imaging apparatus. Characterized in that an X-ray imaging device moving means for moving the X-ray between an imaging position and a standby position is attached.

[0009]

The operation of the present invention is as follows. That is, the X-ray tube is attached to the front of one end of the C-arm, and an image intensifier and an X-ray imaging device are provided so as to face the X-ray tube.
When the C-arm is rotated around the X-axis via the C-arm support member as in a conventional apparatus in which an image intensifier and an X-ray imaging apparatus are mounted shifted from both ends of the C-arm in the Z-axis direction. In addition, the disadvantage that the C-arm interferes with the floor surface is avoided. Therefore, there is no need to provide an extra mechanism such as moving the C-arm up and down, and the apparatus does not become complicated. In addition, the operation at the time of X-ray fluoroscopy and X-ray imaging does not involve an extra operation such as moving the entire C-arm up and down, so that the operability is not reduced.

The image intensifier moving means is C
It is attached to the front of the other end of the mold arm, but is attached to the attachment surface of the connecting means provided on the side opposite to the image intensifier moving means with the image intensifier in between.
Since the X-ray imaging apparatus moving means is attached, the X-ray imaging apparatus moving means does not exist between the image intensifier and the image intensifier moving means, and the end side for attaching the image intensifier to the C-arm. The effective length of the rotation of the C-arm can be increased by the amount that the X-ray imaging apparatus moving means is not provided, and the limitation on the rotation of the C-arm can be reduced.

Further, since the image intensifier moving means and the X-ray imaging apparatus moving means are disposed to face each other with the image intensifier interposed therebetween, the weight of the image intensifier moving means and the X-ray imaging The balance between the weight of the device moving means and the image intensifier is improved to some extent, the center of gravity of the C-arm approaches the center of the C-arm, and the C-arm moves around the X-axis via the C-arm support member. It is possible to reduce the driving energy when rotating in the first direction.

Moreover, the X-ray imaging apparatus moving means is mounted on the mounting surface of the connecting means for connecting the image intensifier to the image intensifier moving means.
The X-ray imaging device connected to the X-ray imaging device moving means can be moved toward and away from the X-ray tube.

[0013]

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an overall side view of an X-ray fluoroscopic apparatus according to an embodiment of the present invention, and FIG. 2 is an overall front view thereof. In this embodiment, an X-ray fluoroscopic apparatus in which a C-shaped arm is suspended from a ceiling will be described as an example. Note that FIG.
4 are the same as those in the conventional example,
The detailed description here is omitted.

The configuration of the vicinity of the end of the C-arm 3 on the side where the image intensifier 5 is attached, which is a main part of the present invention, will be described below. An image intensifier moving unit 6 is attached to the front of this end of the C-arm 3. An image intensifier holding frame 20 holding the image intensifier 5 is attached to the image intensifier moving unit 6, and the image intensifier holding frame 20 is attached to the image intensifier moving unit. 6, the image intensifier 5 is moved in the Y-axis direction by being moved in the Y-axis direction. The image intensifier 5 is held by the image intensifier holding frame 20 so as to face the X-ray tube 4.

The image intensifier holding frame 20 has a mounting surface FH on the opposite side of the image intensifier moving section 6 with the image intensifier 5 held therebetween. On the mounting surface FH of the image intensifier holding frame 20, a film changer moving section 9 as an X-ray imaging apparatus moving means is mounted.

The operation of the apparatus having the above-described configuration will be described below. When the suspension arm 1 rotates about the Y axis with respect to the ceiling, the entire C-arm 3 rotates about the Y axis, and the C-arm support member 2 moves the X-axis with respect to the suspension arm 1.
By rotating around the axis, the entire C-arm 3 rotates around the X axis. Further, the C-arm 3 rotates about the Z-axis with respect to the C-arm support member 2 so that the X-ray tube 4 attached to each end of the C-arm 3, the image intensifier 5, It rotates around the Z axis while facing the film changer 8. At this time, the film changer moving unit 9 is mounted on the mounting surface FH of the image intensifier holding frame 20 provided on the opposite side of the image intensifier moving unit 6 with the image intensifier 5 interposed therebetween. Since there is no film changer moving unit 9 between the image intensifier 5 and the image intensifier moving unit 6,
The length between the end of the C-shaped arm 3 and the image intensifier 5 can be increased by the absence of the film changer moving unit 9, and the effective length IL on the image intensifier 5 side is It can be made longer than in the conventional example shown in FIGS. Therefore, the restriction on rotation about the Z axis can be reduced.

The image intensifier 5 and the film changer 8 are moved in the Y-axis direction via the image intensifier holding frame 20 by the movement of the image intensifier moving section 6 in the Y-axis direction. The film changer 8 is moved by the film changer moving unit 9 between the photographing position SP and the standby position TP.

Further, in the above embodiment, the image intensifier moving unit 6 and the film changer moving unit 9 are used.
Are arranged to face each other with the image intensifier 5 interposed therebetween, so that the weight of the image intensifier moving unit 6 and the weight of the film changer moving unit 9 are well balanced to some extent across the image intensifier 5. That is, the center of gravity of the entire C-shaped arm 3 approaches the center O of the C-shaped arm 3, and the driving energy for rotating the C-shaped arm 3 around the X and Y axes can be reduced.

In the above embodiment, the X-ray fluoroscope in which the C-arm is suspended from the ceiling has been described as an example. However, the X-ray fluoroscope has the C-arm fixed to the floor. The same can be applied to the above.

[0020]

As is clear from the above description, according to the present invention, the X-ray tube is mounted on the front of one end of the C-arm, and the image intensifier and the X-ray tube are opposed to the X-ray tube. Since the X-ray imaging device is provided, the X-ray tube, the image intensifier, and the X-ray imaging device are attached to the C-type arm support member as in the conventional device which is displaced in the Z-axis direction from both ends of the C-type arm. When the C-arm is rotated around the X-axis via the intervening member, the disadvantage that the C-arm interferes with the floor surface is avoided. Therefore, there is no need to provide an extra mechanism such as moving the C-arm up and down, so that the apparatus is not complicated, and the operation of X-ray fluoroscopy and X-ray imaging can be performed by moving the entire C-arm up and down. It does not involve extra operations such as causing the operability, and does not lower the operability.

The image intensifier moving means is attached to the front of the other end of the C-shaped arm.
Since the X-ray imaging apparatus moving means is mounted on the mounting surface of the connecting means provided on the side opposite to the image intensifier moving means with the image intensifier interposed therebetween, the X-ray imaging apparatus moving means has the image intensifier and the image intensifier. The effective length of the rotation of the C-arm on the end side where the image intensifier is not provided between the intensifier moving means and the image intensifier is attached to the C-arm is increased by the amount that the X-ray imaging apparatus moving means is not provided. As a result, the limitation on the rotation of the C-arm can be reduced.

Further, since the image intensifier moving means and the X-ray imaging apparatus moving means are disposed opposite to each other with the image intensifier interposed therebetween, the weight of the image intensifier moving means and the X-ray imaging The balance between the weight of the device moving means and the image intensifier is improved to some extent, the center of gravity of the C-arm approaches the center of the C-arm, and the C-arm moves around the X-axis via the C-arm support member. In this case, the driving energy required for the rotation can be reduced.

Also, since the X-ray imaging apparatus moving means is mounted on the mounting surface of the connecting means for connecting the image intensifier to the image intensifier moving means, the X-ray imaging apparatus moving means is moved by the image intensifier moving means. An X-ray imaging device connected to the means can be moved toward and away from the X-ray tube.

[Brief description of the drawings]

FIG. 1 is an overall side view of an X-ray fluoroscopic apparatus according to an embodiment of the present invention.

FIG. 2 is an overall front view of the embodiment device.

FIG. 3 is an overall side view of an X-ray fluoroscopic apparatus according to a first conventional example.

FIG. 4 is an overall front view of the first conventional example device.

FIG. 5 is an overall side view of a second conventional example device.

FIG. 6 is an overall front view of a second conventional example device.

FIG. 7 is a diagram showing a problem of the second conventional example device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Suspended arm 2 ... C-arm support member 3 ... C-arm 4 ... X-ray tube 5 ... Image intensifier 6 ... Image intensifier moving part (image intensifier moving means) 8 ... Film changer (X-ray) 9) Film changer moving section (X-ray photographing apparatus moving section) 20 ... Image intensifier holding frame (connecting means) FH ... Mounting surface

Claims (1)

(57) [Scope of request for utility model registration] At least a C-shaped arm supporting member is horizontal.
One end side of a C-arm that is rotatable about an axis (referred to as X-axis) and is rotatably attached to the C-arm support member about an axis (referred to as Z-axis) orthogonal to the X-axis. An X-ray fluoroscope, wherein an X-ray tube is provided at the other end of the C-arm and an image intensifier and an X-ray imaging device are provided at the other end of the C-shaped arm so as to face the X-ray tube. The C-arm is arranged on an axis, an X-ray tube is attached to the front of one end of the C-arm, and the image intensifier is connected to and separated from the X-ray tube at the front of the other end of the C-arm. Image intensifier moving means for causing the image intensifier to be mounted on the image intensifier moving means so as to face the X-ray tube via connecting means. A mounting surface on the opposite side of the image intensifier moving means with respect to the image intensifier, for moving the X-ray imaging apparatus between an imaging position and a standby position on a mounting surface of the connecting means. An X-ray fluoroscopic apparatus to which an X-ray apparatus moving means is attached.