JP2007117584A - Structure for making x-ray apparatus travel on ceiling - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable an apparatus for X-ray apparatus to be easily driven and moved without the upsizing of a moving section. <P>SOLUTION: A fixed rail is provided on the ceiling of an examination room, and a movable rail is provided on the fixed rail in such a manner as to be movable in a direction orthogonal to the longitudinal direction of the rail. A supporting member 3 is provided on the movable rail in such a manner as to be movable in the direction orthogonal to the longitudinal direction of the rail, and a support 4 is provided in a vertically expandable/contractible manner on the supporting member 3. A winding device 9 is provided on the ceiling at each of the four corners of the examination room or on each of indoor peripheral walls, and each of the winding devices 9 and a corner part of the supporting member 3 are connected together via a wire 10, so that the supporting member 3 can be positionally driven and shifted in a horizontal two-dimensional direction by winding and unwinding the wire 10. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  In the present invention, a support member is provided on the ceiling of an examination room for X-ray imaging of a subject so as to be movable in a two-dimensional horizontal direction. The support member includes an X-ray tube, an X-ray tube, and an X-ray detector. The present invention relates to a ceiling traveling structure of an X-ray imaging apparatus provided with devices for X-ray imaging apparatuses such as a C-arm and an X-ray image monitor.

Conventionally, the following are known as this type.
A. First Conventional Example A fixed rail is provided on the ceiling of the examination room, and a movable rail is provided on the fixed rail so as to be movable in a direction perpendicular to the longitudinal direction of the rail. A ceiling suspension device is provided on the moving rail so as to be movable in a direction orthogonal to the longitudinal direction of the rail, and a support column is provided on the ceiling suspension device so as to be extendable in the vertical direction.
The X-ray tube apparatus is attached to the support via an attachment block, and the X-ray tube apparatus is thereby configured to be movable in the horizontal two-dimensional direction.

An operation panel is provided on the X-ray tube apparatus, and an operation switch group is provided on the operation panel.
In the operation switch group, “X-direction movement unlocking for overhead traveling”, “Y-direction movement unlocking for ceiling traveling”, “Up / down movement unlocking”, “Unlocking around the vertical axis of the X-ray tube device”, Switches such as “unlocking around the horizontal axis of the X-ray tube device” are provided.

With the above-described configuration, the X-ray tube apparatus can be set in an appropriate imaging direction when the subject is placed on a horizontal imaging stand or when the subject is placed on a standing imaging stand.
In other words, when the subject is placed on the horizontal imaging table, select “Unlock movement in the X direction for ceiling travel”, “Release movement lock in the Y direction for ceiling travel”, or “Unlock vertical movement lock”. Then, the ceiling suspension device is caused to travel, and the struts are expanded and contracted to fix the X-ray tube device toward the imaging region of the subject. Furthermore, “unlock around the vertical axis of the X-ray tube device” and “unlock around the horizontal axis of the X-ray tube device” are pushed, and the movable diaphragm of the X-ray tube device is directed toward the imaging region of the subject. Position and fix with aiming device. These operations are repeated to aim accurately and perform X-ray imaging.

  On the other hand, when the subject is standing on the standing position imaging stand, select “X-direction movement lock release for ceiling travel”, “Y-direction movement lock release for ceiling travel”, and “Vertical movement unlock”. The X-ray tube apparatus is positioned and fixed at the same height apart from the subject by extending and contracting the struts and pushing the ceiling suspension apparatus. In addition, press “Unlock X-ray tube device about vertical axis” and “Unlock X-ray tube device about horizontal axis” to make the X-ray tube device vertical and cover the movable aperture of the X-ray tube device. It is positioned and fixed by an aiming device toward the examiner's imaging region. These operations are repeated to accurately aim and perform X-ray imaging (see Patent Document 1).

B. Second Conventional Example A ceiling rail is provided on the ceiling surface, and an inner rail is provided on the ceiling rail so as to be movable in a direction perpendicular to the longitudinal direction of the rail. A plurality of rollers provided on the carriage are provided on the inner rail so as to be movable in a direction perpendicular to the rail longitudinal direction of the inner rail, and a support is provided on the carriage so as to be rotatable about a vertical axis.
A C-shaped arm is slidably provided on the slide support provided on the column, and an X-ray irradiation unit comprising an X-ray tube device and an aperture device is supported and fixed at one end of the C-shaped arm, and an image is captured at the other end. An X-ray imaging unit composed of a tensiifier and a TV camera is supported and fixed.

Each of the carriage and the inner rail is configured to be movable by a linear movement drive mechanism. As the linear movement drive mechanism, for example, a structure in which a rack is attached to the fixed side and a pinion is attached to a servo motor shaft provided on the movement side so as to be movable by driving the servo motor is adopted. An encoder is incorporated in each of the servo motor for the carriage and the internal rail, the encoder is connected to the attitude controller, and the controller is connected to the attitude controller. Based on the information stored in advance, an instruction from the operator The movement of the C-shaped arm is controlled (see Patent Document 2).
JP 2005-21470 A Japanese Patent Laid-Open No. 9-140689

However, the conventional example described above has the following drawbacks.
a. Disadvantages of the first conventional example The support and the X-ray tube apparatus are moved manually, and there is a disadvantage that the apparatus weight is large and the burden on the operator is large.
b. Disadvantages of the second conventional example A servo motor is incorporated in each of the carriage and the inner rail itself, which has a disadvantage that it is inconvenient when the structure is complicated and the moving part is enlarged and the space of the examination room is narrow. It was.

  The present invention has been made in view of the circumstances as described above, and it is an object of the present invention to make it possible to easily drive and move the apparatus for an X-ray imaging apparatus without increasing the size of the moving part.

The invention according to claim 1 has the following configuration in order to achieve the above-described object.
That is, in a ceiling traveling structure of an X-ray imaging apparatus in which a support member is provided so as to be movable in a horizontal two-dimensional direction on a ceiling in a room for X-ray imaging of a subject, and an X-ray imaging apparatus device is provided on the support member. It has a cable-like body of the support member attached at three or more positions, a winding device that winds and unwinds the cable-like body, and a drive mechanism that drives the winding device. It is a feature.

(Action / Effect)
According to the structure of the ceiling traveling structure of the X-ray imaging apparatus according to the first aspect of the present invention, the winding device provided at three or more positions on the ceiling or the peripheral wall of the room is driven by the drive mechanism, thereby winding the winding device. A support member connected to the apparatus via a cord-like body is driven and moved in a two-dimensional horizontal direction, and the apparatus for the X-ray imaging apparatus provided on the support member is moved to a desired position.
Therefore, since the X-ray imaging apparatus device can be driven and moved to a desired position without using manual operation, it can be easily moved with less burden on the operator.
In addition, since the winding device is provided not on the moving support member side but on the ceiling or the peripheral wall of the room, the apparatus for X-ray imaging apparatus can be driven and moved without increasing the size of the moving part.
In addition, since it is only necessary to connect the winding device and the support member, which is a moving part, with a cord-like body, it can be easily applied to an existing manual type and can be improved to a drive type. Useful.

  Further, the invention according to claim 2 is the overhead traveling structure of the X-ray imaging apparatus according to claim 1, wherein the feeding length measuring means is provided in the winding device and measures the feeding length of the cord-like body; A fixed position setting means for setting a fixed target position in a horizontal two-dimensional plane of the support member, and the cord-like body necessary for the winding device based on the fixed target position set by the fixed position setting means. Driving length calculating means for calculating the feeding length, and driving so that the feeding length of the cord measured by the feeding length measuring means becomes the feeding length calculated by the feeding length calculating means And a control means for driving the mechanism.

(Action / Effect)
According to the structure of the ceiling traveling structure of the X-ray imaging apparatus according to the second aspect of the present invention, the fixed length setting means sets the fixed target position in the horizontal two-dimensional plane with the fixed position setting means, thereby the feeding length calculating means. Calculate the required feeding length of the cable in the winding device, and drive the drive mechanism so that the feeding length of the cable measured by the feeding length measuring means becomes the calculated feeding length. Thus, the support member can be automatically moved to the fixed target position.
Therefore, the movement to the fixed target position can be performed easily and accurately.

According to the structure of the ceiling traveling structure of the X-ray imaging apparatus according to the first aspect of the present invention, the winding device provided at three or more positions on the ceiling or the peripheral wall of the room is driven by the drive mechanism, thereby winding the winding device. A support member connected to the apparatus via a cord-like body is driven and moved in a two-dimensional horizontal direction, and the apparatus for the X-ray imaging apparatus provided on the support member is moved to a desired position.
Therefore, since the X-ray imaging apparatus device can be driven and moved to a desired position without using manual operation, it can be easily moved with less burden on the operator.
In addition, since the winding device is provided not on the moving support member side but on the ceiling or the peripheral wall of the room, the apparatus for X-ray imaging apparatus can be driven and moved without increasing the size of the moving part.
In addition, since it is only necessary to connect the winding device and the support member, which is a moving part, with a cord-like body, it can be easily applied to an existing manual type and can be improved to a drive type. Useful.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a partially omitted overall perspective view showing a first embodiment of a ceiling traveling structure of an X-ray imaging apparatus according to the present invention. A fixed rail 1 is provided on a ceiling of an examination room, A moving rail 2 is provided so as to be movable in a direction perpendicular to the rail longitudinal direction. A support member 3 is provided on the moving rail 2 so as to be movable in a direction orthogonal to the longitudinal direction of the rail, and a support column 4 is provided on the support member 3 so as to be extendable in the vertical direction.

  An attachment block 5 is provided at the tip of the support column 4 so as to be rotatable around a vertical axis P1 and an X-ray tube 6 is provided on the attachment block 5 so as to be rotatable around a horizontal axis P2. An operation panel 7 is provided integrally with the X-ray tube 6, and an operation handle 8 is attached to the operation panel 7.

  Although not shown, the operation panel 7 includes an “up / down movement unlocking” switch, an “unlocking around the vertical axis of the X-ray tube device” switch, and an “unlocking around the horizontal axis of the X-ray tube device” switch. Is provided. The column 4 is expanded and contracted by selecting and pressing the “up / down movement unlocking” switch, and the X-ray tube 6 is positioned at the same height away from the subject H by a predetermined distance. By selecting and pressing the “unlock around the vertical axis of the X-ray tube device” switch and the “unlock around the horizontal axis of the X-ray tube device” switch, the movable diaphragm of the X-ray tube 6 is examined. It is positioned by an aiming device toward the imaging region of H.

  As shown in the schematic plan view of FIG. 2, a winding device 9 is provided at each of the ceilings of the four corners of the examination room or the peripheral wall of the room, and each winding device 9 and a corner portion of the support member 3 connect the wire 10. And the wire 10 is wound and unwound so that the position of the support member 3 can be moved in the horizontal two-dimensional direction.

As shown in the plan view of the winding device in FIG. 3, an electric motor 11 as a drive mechanism for driving the winding device 9 is linked to the winding device 9, and the support member 3 is driven by the driving of the electric motor 11. It can be moved easily in the horizontal two-dimensional direction.
Each electric motor 11 is provided with a rotary encoder 12 as a feeding length measuring means, and the feeding length of the wire 10 is measured by the number of rotations of the motor shaft.

  As shown in the block diagram of FIG. 4, each rotary encoder 12 is connected to the controller 13, each electric motor 11 is connected to the controller 13, and the fixed target position of the support member 3 in the horizontal two-dimensional plane The fixed position setting means 14 for setting is connected to the controller 13.

The controller 13 is provided with a feeding length calculation means 15 and a control means 16.
The feeding length calculation means 15 calculates the feeding length of the wire 10 necessary for each winding device 9 based on the fixed target position set by the fixed position setting means.

  For example, as shown in the plan view of the xy coordinate system in FIG. 5, the feeding ends of the wires 10 of the four winding devices 9 are (0, 0), (1000, 0), (0 , 650), (1000, 650), and the size of the support member 3 is 100 in the x direction and 150 in the y direction. Based on these values, the wire 10 of one winding device 9 is used as a fixed target position. When the connecting end of the winding member 9 to the support member 3 is (xn, yn) (n is a positive integer), the feeding lengths a1, b1, c1, d1 of the wires 10 of the winding devices 9 are as follows. [See FIG. 2 (a)].

That is,
(A1) ² = (xn) ² + [650− (yn + 150)] ²
(B1) ² = [1000− (xn + 100)] ² + [650− (yn + 150)] ²
(C1) ² = (xn) ² + (yn) ²
(D1) ² = [1000− (xn + 100)] ² + (yn) ²
Further, as shown in the schematic plan view of FIG. 2B, when changing the fixed target position, the feeding lengths a2, b2, and the like of the wire 10 of each winding device 9 are the same as described above. Each of c2 and d2 is obtained.

  The control means 16 has a rotation speed calculation means 17 corresponding to each winding device 9, and the rotation speed calculation means 17 in each rotation speed calculation means 17 based on the feed length of the wire 10 input from the rotary encoder 12. The difference between the required length of the wire 10 calculated by the length calculation means 15 is obtained, and the number of rotations of the motor necessary for winding the wire 10 by the length corresponding to the difference (not an integer number of rotations). ), Or the number of rotations of the motor necessary for feeding out is calculated, and a drive signal for driving and rotating by the obtained number of rotations is output to the electric motor 11.

  With the above configuration, the fixed position setting means 14 sets the fixed target position in the horizontal two-dimensional plane of the support member 3, and the feed length calculation means 15 causes the wire 10 necessary for each winding device 9 to be fed. The electric motor 11 is driven to automatically move the support member 3 to the fixed target position so that the length of the wire 10 measured by the rotary encoder 12 becomes the calculated length. Can do. The winding device 9 is stopped by a brake of the electric motor 11 itself.

  For example, as shown in FIG. 1, it corresponds to the case where the subject H is placed on the horizontal photographing stand 18, or the case where the subject is placed on the standing photographing stand 19 as shown in FIG. The position of the support member 3 is set in advance, the X-ray tube 6 is easily moved to the set position by the electric motor 11, and then the movable diaphragm of the X-ray tube 6 is moved in the direction of the imaging region of the subject H. Aiming and positioning with an aiming device, X-ray imaging can be performed with precise aiming.

FIG. 7 is a schematic plan view showing the second embodiment of the ceiling traveling structure of the X-ray imaging apparatus according to the present invention. The differences from the first embodiment are as follows.
That is, the winding device 9 is provided in each of three places on the ceiling of the examination room or the peripheral wall in the room, each of the two winding devices 9 and the corner portion of the support member 3, and one winding device 9 and the support member. 3 is connected to each other via a wire 10 so that the position of the support member 3 can be moved in a horizontal two-dimensional direction by winding and unwinding the wire 10. Other configurations are the same as those of the first embodiment, and the description is omitted by giving the same reference numerals.

  In the said Example, although the winding device 9 and the supporting member 3 are connected via the wire 10, as this invention, it replaces with the wire 10 and uses the rope etc. which incorporated the reinforcement wire, for example. Well, they are collectively called cords

  Moreover, in the said Example, although the X-ray imaging apparatus which provided the X-ray tube 6 in the supporting member 3 was shown, as this invention, for example, the C-type arm provided with the X-ray tube and the X-ray detector, The present invention can also be applied to an X-ray imaging apparatus in which an X-ray image monitor or the like is provided on the support member 3, and these are collectively referred to as X-ray imaging apparatus equipment.

  Moreover, in the said Example, although it comprised so that all the winding devices 9 might be driven with the electric motor 11, only one of the some winding devices 9 is like a winding spring etc., for example. The urging mechanism may be configured to always urge toward the winding side. In this case, the remaining winding device 9 is moved to the fixed target position based on the feeding length of the wire 10.

  In addition, the present invention is not limited to the configuration in which the support member 3 is automatically driven to the fixed target position set in advance as described above. For example, a lever capable of pushing and pulling is provided. A pressure sensor may be provided in the circumferential direction, and the electric motor 11 may be automatically driven according to the sensing direction as the pressure is sensed by the pressure sensor.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially omitted perspective view showing a first embodiment of a ceiling traveling structure of an X-ray imaging apparatus according to the present invention. It is a schematic plan view. It is a top view of a winding device. It is a block diagram. It is a top view shown with an xy coordinate system. It is a partially-omitted whole perspective view which shows the state corresponding to the standing position imaging stand. It is a schematic plan view which shows Example 2 of the ceiling running structure of the X-ray imaging apparatus which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Fixed rail 2 ... Moving rail 3 ... Support member 6 ... X-ray tube (X-ray imaging apparatus apparatus)
9 ... Winding device 10 ... Wire (cord)
11 ... Electric motor (drive mechanism)
12. Rotary encoder (feeding length measuring means)
DESCRIPTION OF SYMBOLS 14 ... Fixed position setting means 15 ... Feeding length calculating means 16 ... Control means H ... Subject

Claims (2)

  In a ceiling traveling structure of an X-ray imaging apparatus in which a support member is provided on an indoor ceiling for X-ray imaging of a subject so as to be movable in a horizontal two-dimensional direction, and the apparatus for X-ray imaging apparatus is provided on the support member. It is provided with a cord-like body of the support member attached at the above position, a winding device that winds and feeds the cord-like body, and a drive mechanism that drives the winding device. A ceiling traveling structure of an X-ray imaging apparatus. The ceiling traveling structure of the X-ray imaging apparatus according to claim 1, wherein a feeding length measuring means provided in the winding device for measuring a feeding length of the cord-like body, and a support member in a horizontal two-dimensional plane. A fixed position setting means for setting a fixed target position, and a feed length calculation for calculating a feed length of the cord-like body necessary for the winding device based on the fixed target position set by the fixed position setting means And control means for driving the drive mechanism so that the feeding length of the cord-like body measured by the feeding length measuring means becomes the feeding length calculated by the feeding length calculating means. The ceiling traveling structure of the X-ray imaging apparatus.

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