JP2576949Y2 - Overhead traveling X-ray tube suspension - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overhead traveling X-ray tube suspension for X-ray photography, and more particularly to a position in which the X-ray center of an X-ray generator is aligned with the imaging center of an X-ray imaging apparatus. Related to the detection mechanism.

[0002]

2. Description of the Related Art The construction of a conventional overhead traveling type X-ray tube suspension will be described with reference to FIGS. FIG. 6 is an overall front view of the overhead traveling type X-ray tube suspension, and FIG. 7 is a side view thereof. In the figure, reference numeral 1 denotes a fixed rail fixed along the ceiling in the X direction.
As shown in FIG. 7 (a cross-sectional view taken along the line AA in FIG. 7), the roller 2 provided on the movable rail support member 3 causes the movable rail support member 3 to move along the fixed rail 1, that is, in the X direction. It is freely supported. This moving rail support member 3
A moving rail 4 is supported so as to be orthogonal to the fixed rail 1. FIG. 9 (BB of FIG. 6)
As shown in an arrow sectional view), the suspension portion support member 6 is moved by the roller 5 provided on the suspension portion support member 6.
, That is, movably supported in the Y direction. A suspension portion 7 configured to be extendable and contractible is attached to the suspension portion support member 6 in a state of being suspended from a ceiling. A support shaft 19 is attached to the tip of the suspension unit 7. FIG. 10 (FIG. 7)
As shown in the cross-sectional view taken along the line C-C, the rotation shaft 32 is loosely inserted into the support shaft 19 by a plurality of rollers 33 so as to be freely rotatable. Further, an X-ray generator 22 composed of an X-ray tube 20 and a collimator 21 is attached to one end of the rotating shaft 32, and an operation unit 23 is attached to the other end. .

[0003] As shown in FIGS. 8 and 9, the fixed rails 1 above, sections M3 indicating the imaging center C _X in the X direction of the X-ray imaging apparatus is fixed with screws. A micro switch M1 indicating the center of the X-ray in the X direction of the X-ray generator 22 is attached to the moving rail 4 via an L-shaped detector support member 12. The microswitch M1 is mounted such that its operating piece contacts the section M3. Further, the moving rail 4 described above has a Y
Sections M4 showing the shooting center C _Y direction is fixed with screws. A microswitch M2 indicating the center of the X-ray in the Y direction of the X-ray generator 22 is attached to the suspension unit 7 via an L-shaped detector support member 17. The microswitch M2 is mounted so that the operating piece thereof contacts the section M4.

The operation unit 23 is configured as shown in FIG. The operator pushes, pulls, raises, lowers, or rotates an operation handle 24 provided on the operation unit 23 to rotate the X-ray generator 22 in the X and Y directions.
The X-ray generator 2 by moving the
2 can be moved up and down, and the rotating shaft 32 can be rotated to move the X-ray irradiation direction of the X-ray generator 22. Usually, movement in each direction is performed by a braking mechanism in each direction. Movement is deterred. The moving direction selection switches 25 to 30 for releasing these braking mechanisms are provided by the operation unit 2.
3.

[0005] A switch 25 is a switch for releasing the braking of the X-direction movement braking mechanism.
This is a switch for releasing the braking of the Y-direction movement braking mechanism. The switch 27 is a switch for releasing the braking of the vertical movement braking mechanism, the switch 28 is a switch for releasing the braking of the rotary braking mechanism, and the switch 29 is a switch for releasing the braking of all the braking mechanisms. Is a switch for canceling. Further, the switch 30 is a switch for releasing the braking of the X and Y direction movement braking mechanisms performed by a detector described later.

The structure of the above-described braking mechanism in each direction is as follows. Since these braking mechanisms have the same configuration, an X-direction movement braking mechanism will be described as an example. The X-direction movement braking mechanism is provided in the movement rail support member 3 as shown in FIG. 11, and its specific configuration is that of the rod 34 that expands and contracts when the solenoid SOL ₁ is turned “OFF” or “ON”. One end of a lever 36 that swings around a swing fulcrum 35 is connected to the distal end, and the lever 3
6, a braking member 37 having a high friction coefficient such as rubber.
Is connected to the base end of the braking shaft 38 attached to the front end. The distal end of the rod 34 is urged by a tension coil spring 39. Solenoid SOL ₁
Is turned “ON”, the rod 34 contracts, and the lever 36
Is rocked, and the braking shaft 38 is pulled in the direction opposite to the fixed rail 1, whereby the braking member 37 pressed by the fixed rail 1 is released from contact with the fixed rail 1, so that the braking member 37 is moved in the X direction. The movement braking is released. Further, when the solenoid SOL ₁ is "OFF", the rod 34 is tensioned Hikitsu by the tension coil spring 39, by swinging the lever 36, by pushing the brake shaft 37 to the fixed rail 1 direction, the braking member 37 is fixed The rail 1 is pressed to apply braking.

The operator sets the X-ray center of the X-ray generator 22 to the imaging center C of an X-ray imaging device (not shown) installed on the floor.
_In order to match _X and C _Y , while pressing the movement direction selection switches 25 to 30 in the direction in which the X-ray generator 22 is to be moved (while releasing the braking in that direction), the operation handle 2 is pressed.
4 is pushed or pulled to move the X-ray generator 22. Movement in the X direction, microswitch M1 showing an X-ray center sections M3 indicating the imaging center C _X in the X direction of the X direction of the X-ray generator 22 of the X-ray imaging apparatus is braked as detected. Similarly, the movement in the Y direction is braked when the microswitch M2 indicating the center of the X-ray in the Y direction detects a slice M4 indicating the imaging center C _Y in the Y direction. As described above, after the X-ray center coincides with the imaging center, X-ray imaging is performed by irradiating the subject with X-rays.

[0008]

However, the prior art having such a configuration has the following problems. That is, in order to match the X-ray center of the X-ray generation device 22 with the imaging centers C _X and C _Y of the X-ray imaging device, the operator manually moves the X-ray generation device 22. At this time,
Depending on the speed at which the X-ray generator 22 is moved, the microswitch M1 (M2) operates to operate the braking mechanism, and the X-ray generator 2 is stopped before the X-ray generator 22 is completely stopped.
2 moves a considerable distance, so that there is a problem that a "displacement" easily occurs between the imaging center of the X-ray imaging apparatus and the X-ray center of the X-ray generation apparatus 22. When a "deviation" occurs between the imaging center of the X-ray imaging apparatus and the X-ray center of the X-ray generation apparatus 22, the irradiation field of the X-ray irradiated on the X-ray film is shifted,
Some parts are not shot. The limit of the part that is not photographed is specified by the Pharmaceutical Affairs Law and must be kept within a certain range.

A section M3 and a section M4 indicating the imaging centers C _X and C _Y of the X-ray imaging apparatus are fixed to the fixed rail 1 and the moving rail 4 by screws or the like. The positions of the slice M3 and the slice M4 indicating the imaging center are determined by, for example, moving the X-ray imaging apparatus relative to the relative position between the ceiling traveling X-ray tube suspension and the X-ray imaging apparatus. If it is different, you need to change it. However, section M3
And the section M4 are fixed with screws or the like, and changing their positions involves a complicated operation of making new screw holes in the fixed rail 1 and the moving rail 4 and fixing them with screws.

The present invention has been made in view of such circumstances, and an overhead traveling X-ray capable of reducing the "displacement" between the imaging center of the X-ray imaging apparatus and the X-ray center of the X-ray generation apparatus. The purpose is to obtain a pipe suspension.

Another object of the present invention is to make it possible to easily change the position of an indicator which indicates the imaging center of the X-ray imaging apparatus.

[0012]

The present invention has the following configuration to achieve such an object. That is, the ceiling traveling type X-ray tube suspension according to the present invention attaches an X-ray generator to a suspension portion suspended horizontally so as to be able to move horizontally along a rail provided on the ceiling.
When aligning the center of the line with the imaging center of the X-ray imaging apparatus installed on the floor, the operator operates the moving direction selection switch provided on the operation unit disposed on the suspension unit, thereby setting the suspension unit. An overhead traveling X-ray that performs braking by releasing the braking that inhibits horizontal movement and moving the suspension unit, and detecting a center indicator that indicates the center of X-ray imaging with a detector that moves with the X-ray generator. In the tube suspension device, a range indicator that indicates an appropriate range in the movement direction including the center indicator, a range detector that moves with an X-ray generator and detects the range indicator, and the range indicator A warning device for issuing a warning upon detection is provided, and the center indicator and the range indicator are each detachably installed.

[0013]

The operation of the present invention is as follows. That is, when the range detector detects the range indicator while the X-ray generator is moving, a warning is issued from the warning device. This allows the operator to know that the user has approached the imaging center, and thus reduces the moving speed of the X-ray generator. Then, when the center detector detects the center indicator, the braking mechanism operates and the X-ray imaging apparatus stops immediately.

[0014]

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a front view of a position detecting mechanism provided in an overhead traveling type X-ray tube suspension according to an embodiment of the present invention, FIG. 2 is a side view of the position detecting mechanism, and FIG. FIG. 4 is a perspective view for explaining a positional relationship between a photosensor serving as a position detector and an indicator. In this embodiment, the configuration is the same as that of the overhead traveling X-ray tube suspension shown in FIGS. 6 to 12 described in the conventional example, except for the configuration of the position detection mechanism which is a main part of the present invention. The description here is omitted.

In the figure, reference numeral 1 denotes a fixed rail, on which a reflecting plate 8 indicating an X-direction imaging center _CX of an X-ray imaging apparatus (not shown) installed on the floor is fixed via an adhesive tape. ing. A reflector 9 is similarly fixed below the reflector 8 in an appropriate range in the X direction including the photographing center _CX . Then, the reflection type photo sensors 10 and 11
The light emitting and receiving surface is attached to the moving rail 4 via an L-shaped detector indicating member 12 so as to face the reflection plates 8 and 9 (see FIGS. 1 and 2).

Further, a reflecting plate 13 indicating an imaging center C _Y in the Y direction of the X-ray imaging apparatus is fixed to the moving rail 4 via an adhesive tape. Below the said reflecting plate 13, the reflecting plate 1 to the appropriate range of the Y direction including the imaging center C _Y
4 (hereinafter, referred to as a range reflector) is similarly fixed. Then, the reflection type photosensors 15 and 16 are attached to the suspension unit 7 via the L-shaped detector indicating member 17 with the light emitting and receiving surfaces facing the reflection plates 13 and 14 (FIG. 1). (See FIG. 2).

The above-mentioned reflection type photo sensor 10 (15),
11 (16), the imaging center C _X (C _Y ) of the X-ray imaging apparatus and the indicator 18 (reflector 8 (13) and range reflector 9 (1)
The relationship between the position detection mechanisms 4) and 4) will be described with reference to FIG. A reflecting plate 8 (13) is provided on a C _X (C _Y ) line, which is the imaging center of the X-ray imaging apparatus. C _X which is the center of this shooting
(C _Y ), the X below the reflection plate 8 (13).
Range reflector 9 longer than reflector 8 (13) in (Y) direction
(14) is provided. Reflection type photo sensor 10 (15)
Is a distance (for example, 5) at which the reflection plate 8 (13) can be detected.
mm), and the reflection type photosensor 11 (1
6) is similarly provided. In addition, the reflection type photo sensor 1
0 (15) and 11 (16) are provided at a distance (for example, 10 mm) that does not interfere with each other.

Next, the operation when the switches 25 to 30 of the operation unit 23 are pressed will be described with reference to the circuit diagram of FIG. These switches 25 to 30 are constituted by switches (momentary switches) that are maintained in the “ON” state only while the switches are being pressed.
F "state.

[0019] and press the switch 25, only the relay R ₁ while pressing becomes "ON" state (FIG. (A)). Then, while the reflective photosensor 10 is in the “OFF” state (X
While) the reflective photosensor 10 of the reflector 8 showing the shooting center C _X direction does not detect, since the relay R ₅ which is connected to the output terminal is "ON" state, the solenoid SOL ₁ is " ON state (FIG. 6B). When you release the switch 25, the relay R ₁ is in the "OFF" state,
Solenoid SOL ₁ is in the "OFF" state. As described above, the solenoid SOL ₁ is a component constituting the X-direction movement braking mechanism, and the solenoid SOL ₁ is turned “ON”.
In this state, braking in the X direction is released, and in the "OFF" state, braking is applied.

When the switch 26 is pressed, similarly to the switch 25, while the reflection type photosensor 15 is in the "OFF" state (the reflection type photosensor 15 detects the reflection plate 13 indicating the photographing center C _Y in the Y direction). SOL) is the solenoid SOL
₂ is turned on, the braking in the Y direction is released, and when the switch 26 is released, the relay R ₂ is turned off, the solenoid SOL ₂ is turned off, and braking is performed in the Y direction. Take it.

When the switches 27 and 28 are pressed, the relays R ₃ and R ₄ are turned on only while the switches 27 and 28 are pressed, the solenoids SOL ₃ and SOL ₄ are operated, and the upper and lower braking mechanism of the X-ray generator and The rotation braking mechanism is released. And
When the switches 27 and 28 are released, each braking mechanism operates. When the switch 29 is pressed, the relays R _{1 to} R ₄ are held only while the switch 29 is pressed.
Are all in the “ON” state, and the solenoids SOL _{1 to} SO
L ₄ is all set to "OFF" state. However, solenoid S
With respect to OL ₁ and solenoid SOL ₂ , the reflection type photo sensor 10 uses the reflection plate 8 indicating the photographing center C _X in the X direction.
Further, only when the reflection type photosensor 15 does not detect the reflecting plate 13 indicating the imaging center C _Y in the Y direction (when the X-ray imaging center does not coincide with the X-ray center).

The switch 30 is used by simultaneously pressing the switch 25 or the switch 26. That is, while pressing the switch 25 (26) to move the X-ray generator 22, the reflection type photosensor 10 (11) detects the reflection plate 8 is an imaging center (13), the relay R ₅ (R ₆₎ is When the state becomes “OFF”, the solenoid SOL ₁ (SOL
₂ ) becomes "OFF" state, and braking is performed. Then, for example, after the X-ray imaging, in order to release the braking to move the X-ray generator 22 from this state, the switch 25 (26) and the switch 30 are simultaneously pressed, and the relay R ₁ (R ₂ ) is turned on. Set both the relay R ₇ to the “ON” state,
The solenoid SOL ₁ (SOL ₂ ) is turned on.

Next, the operator selects the moving direction of the X-ray generator 22 in the X direction so that the X-ray center of the X-ray generator 22 coincides with the imaging center C _X (C _Y ) of the X-ray imaging apparatus. An operation of moving the X-ray generator 22 by pushing or pulling the operation handle 24 while pressing the switch 25 (the movement direction selection switch 26 in the Y direction) (while releasing the braking in that direction) will be described.

First, when the switch 25 (26) is pressed, the relay R ₁ (R ₂ ) is turned on and the solenoid S
OL ₁ (SOL ₂ ) is in the “ON” state. Thus, the braking is released, and the moving rail 4 (suspended portion 7) is pushed toward the X-ray imaging center C _X (C _Y ) by the operator's hand. Reflection type photosensor 11 (16) as range detector
Detects the range reflector 9 (14), the buzzer BZ1 (BZ2) connected to the output terminal of each photosensor emits a warning sound. When the operator hears the warning sound, the operator decreases the pressing force to reduce the speed. Then, further movement rail 4 (suspension portion 7) approaches the X-ray imaging center C _X (C _Y), reflective photosensor 10 a reflector 8 (13) showing the X-ray imaging center C _X (C _Y) When (15) is detected, the relay R ₅ (R ₆ ) connected to the output terminal is turned off. Thereby, the buzzer BZ1 (BZ
2) is silenced when the relay R ₅ (R ₆ ) is turned “OFF”, the solenoid SOL ₁ (SOL ₂ ) is turned “OFF”, and braking is performed. In this manner, the X-ray center of the X-ray generation device 22 can be accurately matched with the imaging center C _X (C _Y ) of the X-ray imaging device.

Next, operations required when the positional relationship between the X-ray imaging apparatus and the X-ray generation apparatus 22 differs due to the movement of the X-ray imaging apparatus will be described. First, the X (Y) direction reflector 8 (13) and the range reflector 9 (14), which are fixed to the fixed rail 1 (moving rail 4) via an adhesive tape, are peeled off. Next, the peeled-off reflector is fixed to the imaging centers C _X and C _Y of the moved X-ray imaging apparatus again.

In this embodiment, the reflection plate 8 (13)
Is fixed at a position that coincides with the imaging center C _X (C _Y ) of the X-ray imaging apparatus, but need not necessarily be fixed at the coincident position. For example, when the reflection plate 8 (13) is fixed at a position separated by a distance D from the imaging center C _X (C _Y ) of the X-ray imaging apparatus, the photo sensor 10 (15) attached to the moving rail 4 and the suspension unit 7 ) May be shifted from the X-ray center of the X-ray generator 22 by the distance D in the same direction.

The position detecting mechanism described above can be variously modified without being limited to this embodiment. FIG.
(A) is an indicator 18a in which the reflector 8 (13) and the range reflector 9 (14) are integrated. FIG.
(B), the detector is a reflection type photo sensor 10 (15),
11 (16) instead of the transmission type photo sensor 10b (15
b) and 11b (16b). Indicator 18
b is a T-shaped light shielding plate 8b (13b) and a range light shielding plate 9b
(14b).

The indicator 18 may be fixed by a magnet instead of the adhesive tape. Further, the detector can be constituted by a magnetic sensor instead of the photo sensor.

[0029]

As is apparent from the above description, according to the present invention, the range indicator indicating an appropriate range in the moving direction including the photographing center is detected, and the warning device warns near the photographing center. Since the sound is emitted, the operator can determine that the shooting center is close. This allows the operator to adjust the force applied to push the X-ray generator, so that when the indicator indicating the center of imaging is detected and braking is applied, the X-ray generator stops immediately and the X-ray center is stopped. "Deviation" hardly occurs with the center of X-ray imaging. Further, the indicator indicating the center of the X-ray imaging and the range indicator indicating the vicinity thereof are detachably installed, so that their positions can be easily changed.

[Brief description of the drawings]

FIG. 1 is a front view of a position detecting mechanism provided in an overhead traveling X-ray tube suspension according to an embodiment of the present invention.

FIG. 2 is a side view of a position detection mechanism provided in the overhead traveling X-ray tube suspension according to one embodiment of the present invention.

FIG. 3 is a perspective view for explaining a positional relationship between a photosensor as a position detector and an indicator.

FIG. 4 is a perspective view showing a modified example of the indicator and a modified example of the indicator and the detector.

FIG. 5 is a diagram showing a circuit configuration of a braking mechanism.

FIG. 6 is an overall front view of an overhead traveling type X-ray tube suspension.

FIG. 7 is an overall side view of an overhead traveling X-ray tube suspension.

8 is a cross-sectional view of the conventional device shown in FIG.

9 is a cross-sectional view of the conventional device of FIG.

FIG. 10 is a sectional view taken along the line CC of FIG. 7;

FIG. 11 is a diagram showing a configuration of a braking mechanism.

FIG. 12 is an external view of an operation unit.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Fixed rail 4 ... Moving rail 7 ... Suspended part 8,13 ... Reflector 9,14 ... Range reflector 10, 11, 15, 16 ... Reflective photo sensor _CX ... X direction imaging center of X-ray imaging apparatus C _Y ... Y direction shooting X-ray imaging apparatus center SOL ₁ ~SOL ₄ ... solenoid R ₁ to R ₇ ... relay

Claims (1)

(57) [Scope of request for utility model registration] 1. An X-ray generator is attached to a suspension portion suspended horizontally so as to be movable along a rail provided on a ceiling,
When aligning the X-ray center of the X-ray imaging apparatus with the imaging center of the X-ray imaging apparatus installed on the floor, the operator operates a moving direction selection switch provided on an operation unit provided on the suspension unit. The brake which suppresses the horizontal movement of the suspension unit is released by operating the suspension unit, and the suspension unit is moved. The detection is performed by the detector which moves the X-ray generator along with the center indicator indicating the center of X-ray imaging, and the braking is performed. A range indicator indicating an appropriate range in the moving direction including the center indicator, and a range detector that moves with an X-ray generator and detects the range indicator. And a warning device that issues a warning by detecting the range indicator, and wherein the center indicator and the range indicator are each detachably installed. vessel.