JPH0245453B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides an X
The present invention relates to a compression device for a medical X-ray device that uses a protruding column with a radiation source attached to it (overtable tube method), and particularly relates to a compression device for a medical X-ray device that is safe and does not interfere with the work of a practitioner. .

[Prior Art] Compression devices in medical X-ray apparatuses are often used to compress and deform the stomach, particularly when performing X-ray imaging of the stomach.

Conventional overtable tube method medical X
The compression device of the X-ray device has an X-ray source attached to the upper end, and a lift that moves up and down along the pillar that is installed upright so as to protrude above the top plate on which the patient is placed. A common configuration is that the elevator is provided with a lifting rod that projects almost horizontally from the elevator, and a compressor that compresses the area to be examined is removably attached to the tip of the lifting rod. . In this case, the elevating rod and the compressor are moved up and down in the axial direction of the column by the elevation of the elevator driven by the drive mechanism, and along with the vertical movement, the elevating rod and the compressor are moved from the top plate side surface of the column to the top plate side. It remains almost horizontal between the position where it protrudes almost horizontally (insertion position) and the position where it becomes almost parallel to the longitudinal direction of the top plate from the protruding position (retracted position).
It moves while turning at an angle of 90 degrees, and in the lowered position (compression position) that protrudes almost horizontally toward the top plate, the
It is designed to compress the subject's area to be examined located at the center of the irradiation field on the radiation receiving surface. After the imaging is completed, the lifting rod and the compressor are moved upward to release the compression, and along with the upward movement, the compressor, etc. is rotated in the longitudinal direction of the top plate, and the compressor, etc. is moved upward. It is designed to be evacuated from the board.

[Problems to be Solved by the Invention] In the conventional compression device, when the elevating rod and the compressor are retracted from the top plate to a position where they are approximately parallel to the longitudinal direction of the top plate, the retracted position There is a problem that the compressor etc. on the top board interferes with the operator's work when palpating the patient on the tabletop or assisting the physically disabled person in need of care. In order to keep the compressor etc. out of the way of the practitioner, it is necessary to increase the stroke of vertical movement, resulting in a problem that the structure becomes large and uneconomical, making it impractical.

In addition, in recent years, overtable tube type medical X-ray devices have been developed that allow for oblique angle photography by tilting the column, and devices that connect the X-ray source and the X-ray imaging device as one unit and Mobile devices are becoming popular. In such a device, the support is tilted with respect to the top plate or the support is moved in the longitudinal direction of the top plate, so when the compressor etc. are in the retracted state as in the conventional compression device,
If the column is tilted or moved, there is a risk of collision and injury to the patient on the tabletop or the practitioner near the column, and there is also a risk of collision between the compressor and the tabletop support. In order to prevent this, there was a problem in that the angle of oblique entry was limited to a small value.

In view of the above-mentioned problems of the prior art, the present invention does not obstruct the work of the practitioner, and is safe even if the support column tilts or moves during oblique angle photography. It is an object of the present invention to provide a compression device for a medical X-ray apparatus that can increase the angle of the corner.

[Means for Solving the Problems] In order to achieve the above object, the compression device for a medical X-ray apparatus of the present invention includes a support arm mechanism in which a compressor is attached to a column that supports an X-ray tube above the top plate. I support you,
The support arm mechanism is driven by a drive source, and the compressor is moved between a retracted position set outside the X-ray irradiation field, an insertion position located at the center of the X-ray irradiation field, and the subject on the top plate. In a compression device for a medical X-ray apparatus that is moved between a compression position and a compression position, the support arm mechanism includes a first arm having a compressor attached to one end thereof, and an X-ray rod for compressing the support arm mechanism. a moving member provided movably along a central axis; a second arm rotatably attached to the moving member with one end as a fulcrum and rotatably supporting the first arm at the other end; Both the first arm and the second arm are rotated to fold or open by the driving force of the driving source, and the compressor is moved between the retracted position along the side surface of the support column and the inserted position. The structure includes an arm opening/closing mechanism that opens and closes the arm.

The opening and closing operations of the first arm and the second arm may be performed within a plane including the axis of the support and the center axis of the X-ray cone.

[Operation] By configuring the compression device as described above, the first arm has a compressor attached to one end, and the first arm is rotatably attached to the movable member using one end as a fulcrum, and the first arm is rotated to the other end. A second movably supporting arm moves up and down in the axial direction of the column along the central axis of the X-ray cone, and at the same time moves the compressor away from the irradiation field of the X-ray image receiving surface and stores it along the column. This enables a folding operation in which the compressor is folded as shown in FIG. Each of these operations is performed between a retracted position outside the X-ray imaging field where the compressor is stored along the column by the arm opening/closing mechanism and an insertion position where the compressor is located at the center of the irradiation field. In this case, in the folded state of the compressor, etc., the folded compression device is stored within the width dimension of the strut (usually at the center of the width), with no portion protruding outside the width dimension.

By configuring the arm opening/closing operations of the first arm and the second arm to be performed within a plane including the axis of the column and the central axis of the X-ray cone, the opening/closing operations are always performed within the constant It is performed within a plane and with a constant stroke, and even if the column is tilted or moved, there will be no part that protrudes outside the width of the column, and it will not interfere with the practitioner's work or cause damage to the patient or patient. Problems such as the risk of colliding with a practitioner near the pillar can be prevented.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. Fig. 1 is an overall perspective view of the compression device, Fig. 2 is a partially sectional side view of the compression device to explain the configuration, Fig. 3 is a partially sectional front view of the compression device to explain the configuration, and Fig. 4 is a simplified diagram of Figure 2, which is an explanatory diagram of the operation of the compression device, and Figure 5 is a simplified diagram of the compression device for medical use.
It is a figure which shows the state mounted|worn with the line apparatus.

First, in FIG. 5, 18 is a top plate on which the subject is placed, 17 is a column that stands upright above the top plate 18, and has an X-ray source 16 attached to its upright upper end.
An X-ray imaging device is arranged below the top plate 18. Next, in Figures 1 to 3, 11
is a base that is fixed along the axial direction of the support 17 on the surface of the support 17 on the top plate 18 side, and a guide rail 21 having a channel-shaped cross section is installed on the surface of the base 11 on the top plate 18 side. , 22 are arranged opposite to each other.
The guide rail 21 has a notch 21 slightly above it.
There is one point A (see Figure 3). 12
2 is a support stand that moves up and down in the direction of the arrow shown in the figure using guide rails 21 and 22 as guides, and as shown in FIG. As shown in FIG.
6, 27, 28 are provided respectively, and the support stand 12
is adapted to move up and down by the rolling of these rollers. 13, the proximal end is attached to the support base 12 with the shaft 5
The arm has a hollow cross section and is supported by 1, and is rotatable in the vertical direction about the shaft 51 in the same plane as the vertical movement plane of the support base 12. Reference numeral 14 denotes a substantially L-shaped arm whose base end is connected to the distal end of the arm 13 by a shaft 52, and is rotatable in the vertical direction within the same plane as the arm 13 using the shaft 52 as a fulcrum. Reference numeral 15 denotes a compressor for compressing the examined part of the patient, whose handle is removably attached to the tip of the arm 14 by a knob 53 with a screw shaft, and is integrated with the arm 14 with the shaft 52 as a fulcrum. It can be rotated in the direction of the arrow shown in FIG.

31 is a sheave supported on a stand 33 fixed to the upper part of the base 11; 32 is a sheave supported by a stand 34 fixed to the lower part of the base 11;
Reference numeral 5 denotes a sheave fixed to one end of a shaft 36 supported by the side plates 23, 24 of the support base 12 via bearings, and the same rope 37 is wound around the sheaves 31, 32, 35.

A motor 38 is fixed to the back wall of the base 11, and a pulley 39 is attached to the output shaft of the motor 38. 41 is the base 1 slightly below the motor 38
The shaft 42 of the worm 46 in the worm reducer 41 is fixed to the back wall of the worm reducer 1.
A pulley 44 is fixed to the shaft end of the pulley 44, and the pulley 44 and the pulley 39 are connected by a belt 48. Further, a sheave 47 is fixed to the shaft end of the shaft 43 supporting the worm wheel 45, and the sheave 47 has the sheaves 31, 32, 3
Similarly to 5, a rope 37 is wound around it.

Reference numeral 55 denotes a band-like link disposed within the arm 13, and a band-like link 6 is placed above it.
5 is fixed in a lattice shape to form an L-shaped link, and the L-shaped link is supported by a shaft 66 provided on the support base 12, and the arm 1 is supported with the shaft 66 as a fulcrum.
It is possible to rotate in the same direction as 3. 62 is a shaft 6 supported at the upper part of the link 55.
3, a link 64 is connected to the link 62 via a shaft 63',
A link 64 is fixed to the shaft 36. 56
is a link whose one end is connected to the lower end of the link 55 via a shaft 57, and the other end of the link 56 is connected to the lower end of the link 55.
It is connected to the arm 14 via 8. A link 59 has one end connected to the links 55 and 56 via the shaft 57, and the other end connected to the arm 13 via the shaft 61.

67 is a pinion attached to the end of the shaft 36, 68 is a sector gear that meshes with the pinion 67, the sector gear 68 is rotatably attached to the shaft 66, and a roller 69 is attached to the side of the sector gear 68. It is being

71 is a weight rotatably provided on a bearing 73 attached to the lower part of the back wall of the base 11 via a shaft 72; 74 is a sheave supported on a shaft 75 fixed to the weight 71; 76; is multiple rods 7
A support plate fixed to the base 11 via 7,
Sheaves 78 and 79 are provided on the support plate 76. The rope 37 has one end fixed to the sheave 47, passes through the sheaves 78, 74, 32, and is wound around the sheave 35.
4 and 79, and the other end is fixed to the sheave 47.

Next, the operation will be explained with reference to FIG. When the motor 38 is driven while the compression device shown in FIG. The sheave 47 is rotated through the worm 46 and the worm wheel 45, and the rope 37 is moved in the direction of arrow C.
move in the direction. The movement of the rope 37 causes the sheave 35 to rotate around the shaft 36 in the direction of arrow D (in this case,
At the same time, the link 64 fixed to the shaft 36 also rotates by the same amount in the direction of arrow D. As the link 64 rotates, the link 62 is pulled upward through the shaft 63', and at the same time, the link 65, which is fixedly formed in an L shape, and the link 55 are pulled upwardly through the shaft 63'.
3 about the shaft 66 in the direction of arrow E. When the link 65 and the link 55 rotate in the direction of the arrow E, the link 56 is pulled upward via the shaft 57, and the shaft 58 connecting the link 56 and the arm 14 is rotated around the shaft 52. Rotate in the direction of arrow F. At the same time, the link 59 is pulled upward and rotated around the shaft 61 in the direction of arrow G, while pushing the arm 13 in the direction of pushing out the arm 13 via the shaft 61. This push causes arm 13
is rotated around the axis 51 in the direction of arrow H,
At the same time, the arm 14 and the compressor 15 are connected to the shaft 5.
2 in the direction of arrow J, the compressor 15 is projected forward of the base 11 to a position (insertion position) where the compressor 15 is approximately horizontal at the center of the X-ray irradiation field.

On the other hand, when the rope 37 is moved in the direction of arrow C until the ejection of the compressor 15 and the like is finished, the pinion 6 attached to the shaft 36 that rotates together with the sheave 35 is shown in FIGS. 2 and 3.
7 also rotates to rotate the sector gear 68 and the roller 69 attached to the sector gear 68 around the shaft 66 (clockwise in this case), and the roller 69 is rotated through the notch 21 provided in the guide rail 21.
A to unlock the vertical movement of the support stand 12, and then move the roller 69 to the guide rail 21.
the side without the notch 21A. This contact stops the pinion 67 and sector gear 68 from rotating. By releasing the lock, the support base 12 can be moved down. That is, if the motor 38 continues to rotate in the direction of arrow A in this state, the rope 37 will pull down the sheave 35 in the direction of arrow C, and the support base 12 will move in the compression direction, compressing it to a predetermined position. The child 15 and the like are lowered to press the subject on the top plate 18.

The compression force of the compressor 15 on the subject increases as the tension on the winding side of the rope 37 in the sheave 74 increases due to the pressure of the compressor 15, and the weight 71
rotates around the shaft 72, the rotated weight 7
1 operates a switch (not shown) to stop the motor 38 and stop the downward movement of the support base 12 to prevent overpressure from increasing further, and also prevents the rotation of the weight 71. A switch is provided that operates to compress a coil spring (not shown) and stop the motor 38 due to the compression, and by adjusting the amount of compression of the coil spring, the operating position of the switch is changed to adjust the compressor. Compression force adjustment means may be provided.

When the compression work is finished, the motor 38 is rotated in the opposite direction. In this case, since the roller 69 rolls along the guide rail 21, the rotation of the pinion 67 and the sector gear 68 is stopped, and the compressor 15 and the like move upward together with the support base 12 while remaining in the protruding state. When the support base 12 reaches the top by this movement, the roller 69 is fitted into the notch 21A of the guide rail 21 and locked at this position, stopping the upward movement. At the same time as this stop, the compressor 15 etc. are folded into the state shown in FIG. stored along.

The above action is always performed within a plane that includes both the axis of the support 17 and the line connecting the focal point of the X-ray source 16 and the center of the irradiation field of the X-ray image receiving surface of the X-ray image capturing device, In addition, since the compression is performed with a constant stroke, even if the column 17 is tilted, the compression device can
Even if there is relative movement between the support 17 and the top plate 18, there is no part that protrudes outside the width dimension of the support 17,
Therefore, it does not interfere with the practitioner's work,
In addition, it is safe because there is no risk of collision with the subject or the practitioner standing near the pillar 17.

[Effects of the Invention] Since the present invention is configured as described above, the compression device of a medical Even if there is a tilting of the column or movement of the column, it can be made safe without any danger. Furthermore, the oblique angle can be made larger than in a medical X-ray apparatus equipped with a conventional compression device.

[Brief explanation of drawings]

The drawings are all explanatory diagrams of one embodiment of the present invention, and FIG. 1 is an overall perspective view of the compression device, FIG. 2 is a side view of the compression device partially cut away to explain the configuration, and FIG.
The figure is a partially sectional front view of the compression device for explaining the configuration, FIG. 4 is a simplified diagram of FIG. 2 and is an illustration of the operation of the compression device, and FIG. FIG. 12... Support stand, 13, 14... Arm, 15
...Compressor, 16...X-ray source, 17...Strut, 1
8...Top plate, 21, 22...Guide rail, 21
A... Notch, 37... Rope, 38... Motor, 55, 56, 59, 62, 64, 65... Link.

Claims (1)

[Scope of Claims] 1. A compressor is supported by a support arm mechanism on a column that supports an X-ray tube above a top plate, and the support arm mechanism is driven by a drive source, and the compressor is Compressing medical X-ray equipment that moves the patient between a retracted position set outside the X-ray irradiation field, an insertion position located at the center of the X-ray irradiation field, and a compression position that compresses the subject on the top plate. In the apparatus, the support arm mechanism includes a first arm having a compressor attached to one end thereof, a movable member movable along the central axis of the X-ray cone for compressing the support arm; a second arm that is rotatably attached to the movable member with one end as a fulcrum and rotatably supports the first arm at the other end; The medical device is characterized by comprising an arm opening/closing mechanism that rotates both sides of the arm to fold or open the compressor to open and close the compressor between the retracted position along the side surface of the support column and the inserted position. Compression device of X-ray machine. 2. The medical X-ray apparatus according to claim 1, wherein the arm opening/closing operations of the first arm and the second arm are performed within a plane including the axis of the support and the central axis of the X-ray cone. Compression device.