JP2007313254A - X-ray diagnosis device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an X-ray diagnosis device, easily capable of securing standing space for people and arranging space for equipment around a top plate in simple constitution. <P>SOLUTION: The device comprises the top plate 1 on which a sample is placed, an X-ray generating part 3 to radiate an X-ray to the sample, a first arm 31 to support the X-ray generating part 3, and a support 5 to support the first arm 31. It is also provided with a support movable mechanism 6 to make the support 5 movable lengthwise of the top plate 1 separately from the X-ray generating part 3. As the support 5 is made movable lengthwise of the top plate 1 separately from the X-ray generating part 3, the position of the X-ray generating part 3 to the sample can be held while the support 5 can be solely moved lengthwise of the top plate in accordance with the need of operation. The standing space for people and arranging space for various kinds of equipment can thus be secured around the sample with a high degree of freedom. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an X-ray diagnostic apparatus having a top plate on which a subject is placed and supporting an X-ray generation unit using a support. In particular, the present invention relates to an X-ray diagnostic apparatus that can move a column independently of an X-ray generation unit and is suitable for interventional radiology (IVR).

  In recent years, IVR procedures have been widely performed in which treatment is performed simultaneously with fluoroscopy. In IVR, multiple people such as doctors, nurses, and technicians are involved in the procedure, and various devices such as endoscopes, monitors, and ultrasonic diagnostic equipment need to be placed around the subject. There is. Therefore, it is important to secure a human standing position and arrangement space for various devices around the subject with a high degree of freedom.

  For such IVR, an X-ray fluoroscopic imaging table having a top plate on which a subject is placed is often used. As this imaging stand, there is an apparatus described in Patent Document 1. This apparatus includes a top plate on which the subject is placed, an X-ray generation unit that irradiates the subject with X-rays, and an X-ray detection unit that detects X-rays transmitted through the subject. The X-ray generation unit and the X-ray detection unit are arranged to face each other with the top plate interposed therebetween, and are supported by the support via the arm. The positions of the X-ray generation unit and the X-ray detection unit relative to the subject can be changed by moving the column in the longitudinal direction of the top plate (in the body axis direction of the subject).

  On the other hand, there is also an apparatus described in Patent Document 2 as a so-called ceiling-mounted X-ray fluoroscopic imaging table. This apparatus also has a top plate on which the subject is placed, and has an X-ray generation unit that irradiates the subject with X-rays, and an X-ray detection unit that detects X-rays transmitted through the subject. However, the X-ray generation part in this apparatus is the structure suspended from the ceiling.

Japanese Patent Laid-Open No. 2003-52675 JP 2004-160263 A FIG.

  However, in the apparatus according to Patent Document 1, there is a problem that the support pillars obstruct the operation, and the standing position of the person and the arrangement position of the device around the top plate are greatly restricted. Since the support supports heavy objects such as an X-ray generation unit and an X-ray detection unit, and the drive unit of the support is provided around the support column, the size including the drive unit is considerably large. For example, there is a case where the support protrudes from the side edge of the top plate to the side by about 40 to 50 cm. Moreover, when performing a procedure, the X-ray generation unit and the X-ray detection unit need to be held at specific positions with respect to the subject, but these generation unit and detection unit can only be integrated with the column. Since it cannot move in the longitudinal direction of the plate, it is impossible to move only the support column in the longitudinal direction of the top plate while maintaining the positions of the generation unit and the detection unit. As a result, the standing position of people around the top board and the location of the equipment are greatly restricted.

  On the other hand, in the apparatus according to Patent Document 2, although it is easy to secure a standing position of a person around the top plate and to secure a device arrangement space, the X-ray generation unit is suspended so as to be movable in the XY direction from the ceiling. A ceiling rail that is considerably large is required. As a result, if the ceiling of the installation space of the X-ray apparatus is low, the ceiling-suspended X-ray apparatus may not be introduced.

  The present invention has been made in view of the above circumstances, and one of its purposes is to provide an X-ray diagnostic apparatus that can easily secure a person's standing position and an arrangement space for a device around the top board with a simple configuration. It is to provide.

  The present invention achieves the above object by enabling the X-ray generator and the column to be driven individually.

  An X-ray diagnostic apparatus according to the present invention includes a top plate on which a subject is placed, an X-ray generator that irradiates the subject with X-rays, a first arm that supports the X-ray generator, and the first arm. It has a supporting column and an X-ray detection unit that is arranged opposite to the X-ray generation unit and detects X-rays transmitted through the subject. And in this apparatus, this invention is provided with the support | pillar moving mechanism which enables the said support | pillar to move to the longitudinal direction of a top plate independently of an X-ray generation part.

  In this manner, by making the support column movable in the longitudinal direction of the top plate independently of the X-ray generation unit, only the support column is maintained while maintaining the position of the X-ray generation unit with respect to the subject according to the convenience of the operation. Can be moved in the longitudinal direction of the top plate. Accordingly, it is possible to secure a standing position of a person and an arrangement space for various devices around the subject with a high degree of freedom.

  In the device of the present invention, a specific example of the support moving mechanism includes a configuration including a generator slider, a base guide, and a base slider. The generator slider holds the first arm slidably in the longitudinal direction of the top plate with respect to the support. The base guide is provided immovably with respect to the installation location of the X-ray diagnostic apparatus. And a base slider hold | maintains a support | pillar slidably to a top plate longitudinal direction with respect to a base guide.

  With such a column moving mechanism, the column is slid with respect to the base guide that is stationary with respect to the installation location of the X-ray diagnostic apparatus. In addition, the support slider can be slid with respect to the first arm that supports the X-ray generator by the generator slider. Therefore, if the column is slid with respect to the base guide and is also slid with respect to the first arm, the X-ray generating unit can be prevented from moving in conjunction with the sliding of the column, and the column can be securely connected to the X-ray generating unit. Can be operated independently.

  The generator slider is preferably connected to the first arm and slides along a generator guide provided along the longitudinal direction of the top plate. As a more specific configuration example of the generator slider, the generator includes a fitting portion that is fitted to the guide for the generator, and a rotating body that is in contact with the guide and is integral with the fitting portion. By doing so, it is possible to make the fitting part slidable along the guide. Examples of the rotating body include rollers and gears. When a gear is used as the rotating body, the generator guide may be provided with a pinion that meshes with the gear. Further, it is preferable to use a motor for driving the rotating body.

  The base guide is a member serving as a track for moving the support column itself in the top plate longitudinal direction. Usually, the top plate of the X-ray diagnostic apparatus is supported by a leg portion installed on the floor surface, but it is preferable to provide a base guide integrally with the leg portion. With such a base guide, the base guide can be fixed with respect to the floor of the room by installing the X-ray diagnostic apparatus in a predetermined room.

  The base slider can use the same configuration as the generator slider. As a specific example thereof, a fitting portion that fits into the base guide, and a rotating body that is in contact with the base guide and that is integral with the fitting portion, and the rotating portion is rotated to rotate the fitting portion along the base guide. One example is making it slidable.

  Moreover, in the X-ray diagnostic apparatus of this invention, it is preferable to provide the operation switch which operates the movement / stop of a support | pillar as a support | pillar moving mechanism. In this case, it is preferable that the operation switch is provided on the side surface of the support column.

  By providing the operation switch on the side surface of the column, a person who is located near the column and wants to move the column can immediately operate the movement of the column. For example, it is preferable that the column is moved to the left when the operation switch on the right side of the column is pressed, and the column is moved to the right when the operation switch on the left side of the column is pressed. What is necessary is just to implement | achieve, for example by pressing an operation switch again, to stop the support | pillar in movement.

  In the X-ray diagnostic apparatus of the present invention, an X-ray detection unit is provided that detects X-rays that are disposed opposite to the X-ray generation unit and pass through the subject. It is preferable that the X-ray detection unit is also configured to move in the longitudinal direction of the top plate independently of the support column. For example, the apparatus of the present invention is provided with a second arm that supports the X-ray detector. And the support | pillar moving mechanism should just be provided with the slider for detection parts which hold | maintains a 2nd arm slidably with respect to a support | pillar to a top plate longitudinal direction.

  With this configuration, the column can be operated in the longitudinal direction of the top plate independently of the X-ray generation unit and the X-ray detection unit.

  The detection unit slider is preferably connected to the second arm and slides along the detection unit guide provided along the longitudinal direction of the top plate, and has the same configuration as the generation unit slider and the base slider. Is available. As a specific example thereof, a fitting portion that fits into the detection portion guide, a rotating body that is in contact with the detection portion guide and that is integral with the fitting portion, and the fitting portion is rotated by rotating the rotation body. It is possible to make it slidable along the detection unit guide.

  In addition, a configuration having an X-ray tube that generates X-rays and an X-ray diaphragm that limits the irradiation field of X-rays can be suitably used for the X-ray generation unit. For the X-ray detection unit, a combination of an image intensifier and a TV camera, an FPD (Flat Panel Detector), or the like can be suitably used.

  According to the X-ray diagnostic apparatus of the present invention, the following effects can be obtained.

  (1) By making the support column movable in the longitudinal direction of the top plate independently of the X-ray generation unit, only the support column is maintained while maintaining the position of the X-ray generation unit with respect to the subject according to the convenience of the operation. It can be moved in the longitudinal direction of the top plate. Accordingly, it is possible to secure a standing position of a person and an arrangement space for various devices around the subject with a high degree of freedom.

  (2) Since the apparatus of the present invention is not a so-called ceiling-suspended apparatus, it is not necessary to perform ceiling work for installing the X-ray generator.

  (3) Providing an operation switch for operating the movement / stop of the column on the column allows the movement / stop of the column to be operated very easily.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
<Device configuration>
As shown in FIG. 1, the X-ray diagnostic apparatus of the present invention includes a top board 1, legs 2, an X-ray generator 3, an X-ray detector 4, a column 5 and a column drive mechanism 6.

  A subject is placed on the top 1. The top plate 1 is supported via legs 2 installed on the floor surface, and can be moved up and down by a drive mechanism (not shown).

  The X-ray generation unit 3 irradiates the subject placed on the top 1 with X-rays. The generation unit 1 includes an X-ray tube that generates X-rays and an X-ray diaphragm that restricts an irradiation range of the generated X-rays. The X-ray generator 3 is supported on the upper end side of the support column 5 via a first arm 31 extending in the width direction of the top plate 1 (direction perpendicular to the longitudinal direction of the top plate). Be positioned.

  The X-ray detection unit 4 detects X-rays that have passed through the subject, converts them into image data, and outputs them. Here, an FPD is used as the X-ray detection unit 4. The X-ray detection unit 4 is supported on the lower end side of the column 5 via a second arm 41 extending in the width direction of the top plate 1, and is disposed opposite the X-ray generation unit 3 below the top plate 1. Image data output from the FPD is subjected to predetermined image processing by an image processing device (not shown) and then displayed as a captured image on a display unit such as a monitor.

  The support column 5 supports the X-ray generation unit 3 and the X-ray detection unit 4 as described above, and is slidable in the longitudinal direction of the top plate 1 independently or integrally with the generation unit 3 and the detection unit 4. It is configured. This sliding operation is performed by a column driving mechanism 6 described below.

  Details of the column drive mechanism 6 will be described with reference to FIG. In FIG. 2, a top plate and legs are omitted. The column drive mechanism 6 includes a base guide 61, a base slider 62, a generator guide 63, a generator slider 64, a detector guide 65, and a detector slider 66. Any of the sliders 62, 64, 66 is configured to be slidable along the guides 61, 63, 65 in the longitudinal direction of the top plate.

  The base guide 61 is a track for supporting the column 5 and sliding the column 5 in the top plate longitudinal direction. As shown in FIG. 2, the base guide 61 used here comprises a horizontal rail 61A extending in the longitudinal direction of the top plate, and a support member 61B that supports the horizontal rail 61A at both ends. Although simplified in FIG. 2, the base guide 61 is configured integrally with the leg 2 that supports the top plate 1, and when the X-ray diagnostic apparatus is installed on the floor surface, the base guide 61 also moves relative to the floor surface. Therefore, it can be regarded as being fixed to the floor surface.

  The support column 5 is slidably held by a base slider 62 with respect to the horizontal rail 61A of the base guide. The base slider 62 has a fitting portion 621 that is fitted to the horizontal rail 61A between the generating portion slider 64 and the detecting portion slider 66, as will be described later. The fitting portion 621 can slide in the longitudinal direction of the horizontal rail 61A by covering the three outer peripheral surfaces of the horizontal rail 61A having a rectangular cross section and covering a part of the remaining one surface, but in other directions. It is configured so that it will not come off.

  A more detailed configuration of the base slider 62 will be described with reference to FIG. FIG. 3 shows the internal structure of the base slider 62 as viewed from above. As shown in this figure, a motor 622 and a drive gear 623 are built in the fitting portion 621. The motor 622 is driven / stopped by operation of an operation switch described later. The drive shaft of the motor 622 rotates the drive gear 623 via the power transmission gear 624. The drive gear 623 is engaged with a pinion (not shown) attached to one surface of the horizontal rail 61A, and the base slider 62 can be moved along the horizontal rail 61A by rotating the drive gear 623. . Further, a bearing 625 is provided at a position facing the horizontal rail 61A in the fitting portion 621, and friction between the fitting portion 621 and the horizontal rail 61A is reduced to enable smooth movement of the base slider 62.

  On the other hand, the generating unit guide 63 and the generating unit slider 64, and the detecting unit guide 65 and the detecting unit slider 66 are also mechanically coupled by the same configuration as the base guide 61 and the base slider 62. The generator guide 63 is integrated with the first arm 31 in the orthogonal direction, and the detector guide 65 is integrated with the second arm 41 in the orthogonal direction. Similarly to the base slider 62, each of the generator slider 64 and the detector slider 66 is fitted with fitting portions 641, 661, motors 642, 662, drive gears 643, 663, power transmission gears 644, 664, and power transmission gears 644, 664. It has bearings 645,665. Each guide 63, 65 has a pinion that meshes with each drive gear 643, 663.

  Such an operation of the column moving mechanism is performed using the operation switch 7. As shown in FIG. 4, the operation switch 7 includes a total of three types of switches 71, 72, 73, first to third. The first switch 71 is provided on the side edge of the top plate 1 on the side where the support column 5 is not disposed. In the first operation switch 71, a pair of triangular buttons are arranged with the apexes facing left and right. The second operation switch 72 is provided on the side surface of the column 5. Here, a pair of button-type switches are provided at positions where the right side surface and the left side surface of the column 5 face each other. The third operation switch 73 is a pair of button-type switches, and is provided on the right end surface and the left end surface of the generator guide 63, respectively. For any of the switches 71, 72, 73, the movement of at least one of the X-ray generation (detection) unit 3 (4) and the support column 5 is started by pressing the button, and the moving operation is stopped by pressing the button again. The

<Operation procedure and operation>
The following operations can be performed by the apparatus of the present invention described above.

  (1) The X-ray generation unit and the X-ray detection unit are moved in the longitudinal direction of the top plate together with the support (whole movement).

  This overall drive is performed using the first operation switch 71. When the button on the right side of the first operation switch 71 in FIG. 4 is pressed, the X-ray generation unit 3 and the X-ray detection unit 4 are moved to the right together with the support column 5, and when the button on the left side of the first operation switch 71 is pressed, X The line generation unit 3 and the X-ray detection unit 5 are moved to the left together with the column 5. The first operation switch 71 composed of triangular buttons can recognize the moving direction of the moving object at first glance, and can perform the moving operation of the moving object quickly and accurately.

  During this moving operation, only the motor 622 of the base slider 62 in FIGS. 2 and 3 is driven, and the motors 642 and 662 of the generator slider 64 and the detector slider 66 are not driven. Therefore, the column 5 moves along the base guide 61, and the X-ray generation unit 3 and the X-ray detection unit 4 are moved along with the movement.

  (2) Move only the column in the longitudinal direction of the top plate while maintaining the positions of the X-ray generation unit and the X-ray detection unit with respect to the subject (column movement).

  This generation (detection) part movement is performed using the second operation switch 72. When the button on the right side of the column in FIG. 4 is pressed, only the column 5 is moved to the left while maintaining the positions of the X-ray generation unit 3 and the X-ray detection unit 4, and when the button on the left side of the column 5 is pressed, Only the column 5 is moved to the right while maintaining the positions of the X-ray generator 3 and the X-ray detector 4. If there is an operation switch on the side of the column, it is only necessary to push the button in the direction in which the column 5 is to be retracted, so that the moving operation of the column 5 can be performed extremely intuitively, quickly and accurately. In particular, since a person located near the column 5 can operate the second operation switch 72 while observing the movement of the column 5, the safety when driving the column can be greatly improved.

  During this moving operation, all the motors 622, 642, 662 of the base slider 62, the generator slider 64, and the detector slider 66 are driven. However, the motor 622 of the base slider and the motors 642 and 662 of the generator slider and the detector slider 642 and 662 rotate in opposite directions. For example, in FIGS. 2 and 3, the X-ray generation unit 3 and the X-ray detection unit 4 are about to be moved to the right together with the column 5 by the rotation of the motor 622 of the base slider 62. However, at this time, since the motors 642 and 662 of the generator slider 64 and the detector slider 66 are rotated in the opposite direction to the motor 622 of the base slider 62, the X-ray generator 3 and the X-ray detector 4 are connected to the column 5 Is moved to the left with respect to the generator slider 64 and the detector slider 66 by the amount of movement relative to the base guide 61. As a result, the positions of the X-ray generation unit 3 and the X-ray detection unit 4 with respect to the top plate 1 are maintained, and only the support column 5 is moved in the top plate longitudinal direction.

  (3) While maintaining the position of the support column, only the X-ray generation unit and the X-ray detection unit are moved in the top plate longitudinal direction (generation (detection) unit movement).

  This generation (detection) part movement is performed using the third operation switch 73. When the right button of the third operation switch 73 in FIG. 4 is pressed, the X-ray generation unit 3 and the X-ray detection unit 4 are moved to the left with respect to the column 5, and when the left button of the third operation switch 73 is pressed. The X-ray generator 3 and the X-ray detector 4 are moved to the right with respect to the column 5. If there are operation switches on both end faces of the generator guide, it is only necessary to push the button in the direction in which the generator guide 63 is to be retracted. Therefore, it is possible to perform the moving operation of the struts extremely intuitively, quickly and accurately. In particular, since the X-ray generator and the X-ray detector can be moved in the longitudinal direction with the X-ray generator and the X-ray detector facing each other, the X-ray generator and X-ray detector can be easily aligned with respect to the subject.

  During this moving operation, only the motors 642 and 662 of the generator slider 64 and the detector slider 66 in FIGS. 2 and 3 are driven, and the motor 622 of the base slider 62 is not driven. Therefore, the support column 5 is not moved in the top plate longitudinal direction, and only the X-ray generation unit 3 and the X-ray detection unit 4 are moved in the top plate longitudinal direction.

  In the above example, a switch is provided for each of the overall movement, the column movement, and the generation (detection) part movement. However, the number of operation switches is one or two, and a changeover switch corresponding to each movement operation is provided. Also good. For example, a single operation switch is provided, and a separate switch is provided. With this switch, the type of movement of the entire movement, support column movement, and generation (detection) section movement is selected, and the selected operation is performed by the operation switch. It may be.

  As described above, when the apparatus of the present invention is used, the X-ray generator and the X-ray detector can be moved together with the support in the longitudinal direction of the top plate in the same manner as the conventional apparatus. It can be operated independently of the part. For example, as shown in FIG. 5A, when the X-ray generator 3 and the support column 5 are arranged in the same straight line in the top plate width direction, the support column 5 becomes an obstacle, and therefore the subject P is sandwiched between them. The operator D cannot face the both sides of the top board 1 to secure the standing position. However, as shown in FIG. 5 (B), if only the column 5 is slid in the right direction of the top board, the operator D is opposed to both sides of the top board 1 with the subject P interposed therebetween to secure a standing position. Can do. Of course, the standing position of the operator D may be utilized as an installation space for various devices.

  The X-ray diagnostic apparatus of the present invention can be used for taking an image with X-rays or for fluoroscopy. In particular, it can be suitably used as an X-ray diagnostic apparatus for performing IVR.

BRIEF DESCRIPTION OF THE DRAWINGS The schematic diagram of the apparatus which concerns on Embodiment 1 of this invention is shown, (A) shows the state before operation | movement of a support | pillar, (B) shows the state after operation | movement of a support | pillar. 3 is a schematic configuration diagram illustrating a support column moving mechanism according to Embodiment 1. FIG. It is a schematic block diagram of the slider which comprises a support | pillar moving mechanism. FIG. 6 is an explanatory diagram illustrating positions of operation switches in the device according to the first embodiment. It is explanatory drawing which shows the standing position of the person around the apparatus at the time of utilizing this invention apparatus, (A) shows the state before support | pillar movement, (B) shows the state after support | pillar movement.

Explanation of symbols

1 Top plate 2 Leg 3 X-ray generator 4 X-ray detector 5 Strut
31 First arm 41 Second arm
6 Prop drive mechanism
61 Base guide 62 Base slider 63 Generator guide
64 Generator slider 65 Detector guide 66 Detector slider
61A Horizontal rail 61B Support member
621,641,661 Mating part 622,642,662 Motor 623,643,663 Drive gear
624,644,664 Power transmission gear 625,645,665 Bearing
7 Operation switch 71 First operation switch 72 Second operation switch
73 Third operation switch
P Subject D Operator

Claims (4)

A top plate on which the subject is placed, an X-ray generator that irradiates the subject with X-rays, a first arm that supports the X-ray generator, a support that supports the first arm, and an X-ray generator An X-ray diagnostic apparatus having an X-ray detection unit that detects X-rays that are arranged opposite to each other and pass through a subject,
An X-ray diagnostic apparatus comprising a support column moving mechanism that enables the support column to be moved in the longitudinal direction of the top board independently of the X-ray generator. The strut moving mechanism is
A generator slider for holding the first arm slidably in the longitudinal direction of the top plate with respect to the support;
A base guide that is stationary with respect to the installation location of the X-ray diagnostic apparatus;
The X-ray diagnostic apparatus according to claim 1, further comprising a base slider that slidably holds the column in the longitudinal direction of the top plate with respect to the base guide. The strut moving mechanism includes an operation switch for operating the strut moving / stopping,
The X-ray diagnostic apparatus according to claim 1, wherein the operation switch is provided on a side surface of the support column. A second arm for supporting the X-ray detector;
The X-ray diagnostic apparatus according to claim 2, wherein the strut moving mechanism includes a detection unit slider that slidably holds the second arm in the longitudinal direction of the top plate with respect to the strut.

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