JPH10127624A - Examinee mounting device and medical x-ray device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control the flow of a contrast medium by improving a table mechanism to be used for a medical X-ray device and arbitrarily adjusting the inclination angle of a top board mounting an examinee. SOLUTION: A 1st leg member 22 is vertically installed on a floor 1, a 2nd leg member 30 is supported by the 1st leg member 22 so as to slide up and down, and the 2nd leg member 30 is reciprocatively driven up and down by a hydraulic cylinder 3 for lift. A top board part 34 is supported onto the 2nd leg member by an inclined supporting shaft 4 so as to be turned, and reciprocatively inclined in clockwise direction and counterclockwise direction in the figure by a hydraulic cylinder 36 for inclination. When inclining the examinee 6 to lower his head like a figure B, the 2nd leg member 30 is moved up and a bottom height dimension (h) of the top board part 34 from the floor is secured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable table for a medical X-ray apparatus on which a subject is placed for diagnosis and treatment, and to a medical X-ray apparatus having the movable table.

[0002]

2. Description of the Related Art While observing a patient using an X-ray apparatus, an IVR (Injection) for performing treatment by inserting a catheter into the patient is performed.
ter ventional Radiology)
Is rapidly becoming urgent because it has the advantages of reducing the pain given to a patient as compared with conventional surgical operations and of having low treatment costs. I above
In the VR, a contrast agent is used for positioning a treatment site and confirming a treatment effect.
A circulatory device capable of seeing in various directions in real time has been widely used in order to obtain a three-dimensional grasp.

FIG. 7 is a perspective view showing a state in which diagnosis and treatment are performed by a circulatory device generally used conventionally. The table 4 on which the subject (in the present invention, agrees with the patient) 6 is supine is supported by the legs 2 so as to be adjustable in height. X around the affected part of the subject 6
The arc tube 12 and the image receiving device 10 face each other,
Supported by The image receiving apparatus 10 includes an image intensifier for converting X-rays transmitted through the subject 6 into an electric signal, and a television camera. The arc-shaped arm 12 is supported by a carriage 14, which runs on a rail 16 fixed to a ceiling 18. The arc-shaped arm 12 is rotated around the vertical axis Z, or rotated in the circumferential direction as shown by reciprocating arrows ab to change the irradiation direction of the X-ray tube 8. The conventional circulatory device shown in FIG.
One X-ray tube 8 emits X-rays mainly from the side of the subject 6, while another X-ray tube mainly emits X-rays from above or below the subject (see FIG. (Not shown).

[0004]

The above-mentioned IVR is
It has been developed and researched in the form of trying treatment while examining a subject using a circulatory device, which is a diagnostic device as shown in Fig. 7. In addition, with the expansion of application cases, a function as an IVR dedicated machine has been required. As one of the requested functions, there is a request to change the posture between the supine position and the standing position without changing the relative position of the subject on the table. The reason is that, for example, when a transmission X-ray image of an occlusion situation is viewed using a contrast agent for a subject whose blood vessels are obstructed, the subject is in a horizontal supine position and in a standing position. Because it is different.

Considering from such a viewpoint, in the conventional circulatory apparatus shown in FIG. 7, fluoroscopic images at various angles can be obtained, but since the subject remains supine, the contrast medium cannot be used. You cannot control the flow.

The present invention has been made in view of the above circumstances, and has as its object to control the flow of a contrast agent by arbitrarily changing the inclination angle of a table on which a subject is placed. I do.

[0007]

The basic principle of the present invention created to achieve the above-mentioned object will be briefly described below with reference to FIG. 2 corresponding to one embodiment. That is, the first leg member 22 perpendicular to the floor 1
Is installed to support the second leg member 30 so as to be slidable in the vertical direction, and the second leg member 30 is reciprocated in the vertical direction by a hydraulic cylinder 38 for lifting and lowering as an actuator. The top plate 32 on which the subject is mounted is rotatably supported by the rotation support shaft 41 with respect to the second leg member 30, and reciprocates to the left and right in the figure by the rotation hydraulic cylinder 36 as an actuator. Tilt.
Based on the above-described principle, the configuration of the invention according to claim 1 includes a top plate portion on which a subject is mounted and a first leg which is erected substantially perpendicularly to a floor surface or a ceiling surface to be installed. Components,
A second leg member supported by the first leg member and movably mounted in the vertical direction of the floor surface, and supporting the top plate so as to be rotatable; and a second leg member. A first actuator that reciprocates in the vertical direction; a second actuator that connects and contracts the top plate and the second leg member to extend and contract; and a control mechanism that controls the respective actuators in a coordinated manner. It is characterized by having.

According to the first aspect of the present invention described above,
The tilt of the top plate changes by the expansion and contraction operation of the actuator that rotatably supports the top plate on which the subject is placed, so that the flow of the contrast agent can be controlled. However, simply tilting the top plate causes a problem in that the height on the floor near the affected part of the subject on the top plate changes, which is inconvenient. Therefore, the second leg supporting the top plate is not suitable. By driving the member in the vertical direction, the height above the floor in the vicinity of the affected part can be adjusted, and the flow of the contrast agent can be controlled without adversely affecting the diagnosis and treatment.

According to a second aspect of the present invention, in addition to the constituent features of the first aspect of the present invention, the second leg member and the supporting portion of the top plate are provided with the second leg member and the top plate. At least one of the plate portions is supported so as to be movable in the vertical direction, and the second leg member and the top plate portion are tiltably supported by at least one tilt support shaft,
And a lever having one end fixed to the tilt support shaft and the other end connected to the first leg member via a link member. The lever moves the top plate in the vertical direction. Alternatively, the tilt support shaft always holds the top plate in a horizontal posture with respect to the floor surface during tilting.

According to a third aspect of the present invention, there is provided a medical X-ray apparatus for irradiating a subject with X-rays and imaging internal information of the subject from the transmitted X-rays. The examiner-mounted device is the subject-mounted device according to claim 1 or 2.

[0011]

1A and 1B show a first embodiment of the present invention, wherein FIG. 1A is an external front view, and FIG. 1B is a schematic side external view drawn partially broken. It is. On the floor 1, a first leg member 22 is installed substantially vertically. In the present invention, "perpendicular" means not perpendicular to the surface of a building such as a floor, but perpendicular to the earth. Note that “up and down” in the following description is up and down when the first leg member is installed vertically. In the present embodiment (FIG. 1), as shown in the side view (B), the first leg members are provided with a pair of left and right as indicated by reference numerals 22a and 22b. In the front view (A), since the left and right first leg members overlap and show only one outline, the first leg members 22 are denoted by reference numerals without suffixes. This figure 1 (B)
, The components with the suffixes a and b are all in a pair, and the suffix is omitted because the components in each pair overlap each other in FIG.

Each of the pair of first leg members 22a, 22b is provided with a linear guide rail 24a, 24 in the vertical direction.
b is fixed. On the other hand, a pair of second leg members 30
a and 30b respectively have slide bearings 26a and 26b,
And the slide bearings 28a and 28b are fixed, and these slide bearings are vertically guided by the linear guide rails 24a and 24b. In this manner, the second leg members 30a, 30b are connected to the first leg members 22a, 22a.
2b and guided to expand and contract in the vertical direction. The second leg member is driven up and down by a lifting hydraulic cylinder 38 (not shown in FIG. 1B) as an actuator. In practicing the present invention, the first and second leg members are not necessarily limited to one pair, and a third leg member described later with reference to FIG.
In the embodiment, each one of the first and second leg members is provided. The pair of second leg members 30a, 30b
Supports both the left and right ends of one tilt support shaft 41 so as to be rotatable. A pair of top plate support bearing brackets 32a and 32b are fixed to the top plate portion 34, and are supported by the tilt support shaft 41 so as to be tiltable.

Reference numerals 36a and 36b shown in FIG. 1B denote tilting hydraulic cylinders as a pair of actuators, and both ends of the tilting hydraulic cylinder 36 as shown in FIG. Are rotatably mounted on the top plate portion 34 and the second leg member 30, respectively.

FIG. 2 is an explanatory view of the operation of the first embodiment shown in FIG. 1 described above. FIG. 2 (A) shows the subject standing upright by rotating the top plate clockwise in the figure. (B) shows a state in which the subject is similarly tilted counterclockwise to lower the head of the subject. When the tilting hydraulic cylinder 36 described with reference to FIG. 1 is contracted, the tilting hydraulic cylinder 36 tilts clockwise as shown in FIG. 2A, and when the tilting hydraulic cylinder 36 is extended, it counterclockwise as shown in FIG. 2B. Rotate around. As understood by comparing FIGS. 2A and 2B, FIG.
If the tilting hydraulic cylinder 36 is simply extended from the state of (A), the left end of the top plate 34 tilted to the left in the figure interferes with the floor 1, and therefore, as compared with FIG. In the figure, the lifting hydraulic cylinder 38 is extended, and the second leg member 30 is raised to maintain the minimum height h above the floor of the top plate 34. By raising the second leg member 30 in this manner, it is possible to prevent the interference between the top plate and the floor, and to prevent the affected part of the subject 6 from falling too low to make X-ray irradiation difficult. can do.

It is an important effect of the present invention that the top plate portion 34 on which the subject is placed can be inclined left and right in the front view as shown in FIG. 2, but the side surface shown in FIG. In the figure, it is inconvenient if the top plate 34 is inclined left and right. A pair of second leg members 3 as in the embodiment of FIG.
The structure in which the both ends of the tilt support shaft 41 are supported by Oa and 30b has an advantage that the tilt support shaft 41 can be horizontally supported with a relatively small force by a lightweight leg member. In order to obtain a practical value, the pair of second leg members 30a and 30b
You need to always be at the same height as each other. That is, the pair of second leg members 30a and 30b must be driven up and down by the same size at the same speed and at the same speed. (See FIG. 1B.) Both ends of the tilt support shaft 41 are
The levers 40a and 40b are fixed at positions close to both ends of the tilt support shaft 41, respectively. The shape of the lever is shown in FIG. However, FIG.
In FIG. 2, the vicinity of the free end of the lever 40 overlaps with the tip of the piston rod of the hydraulic cylinder 36 for tilting, and it is difficult to read the drawing. Bracket member 4 provided near the lower end of first leg member 22
4 and a free end of the lever 40 are connected by a link 42. As can be understood by comparing FIGS. 2A and 2B, when the second leg member 30 is raised, the lever 4 is moved.
0 is rotated clockwise, and when the second leg member 30 is lowered, the lever 40 is rotated counterclockwise.
(See FIG. 1B.) A pair of levers 40a and 40b are fixed to the same tilting support shaft 41, respectively, and move up and down together with the second leg members 30a and 30b. As described above, since the pair of levers 40a and 40b are always constrained to form the same angle, the pair of second leg members 30a and 30b is always constrained to be at the same height and moves up and down. Be moved. As a result, the tilt support shaft 41 is always horizontally supported. The tilt support shaft 41
Is always horizontal, the top plate 34 is tilted as shown in FIGS. 2A and 2B while maintaining a correct posture without tilting left and right in a side view (FIG. 1B). .

FIGS. 3A and 3B show a second embodiment different from FIGS. 1 and 2 described above, wherein FIG. 3A is a front view and FIG. 3B is a side view. In FIG. 3, components denoted by the same reference numerals as those in FIG. 1 are the same or similar components as those in the first embodiment (FIG. 1). Next, FIG. 3 will be described by extracting points different from FIG. 1 (first embodiment). In FIG. 1A, a top plate 3 on which a subject is placed is shown.
The tilt hydraulic cylinder 38 is disposed on the head side of the subject 6 in comparison with the position of the bearing bracket 32 supporting the subject 4, but in FIG. Hydraulic cylinder 48 is disposed. With this configuration, there is no possibility that the tilting hydraulic cylinder enters the X-ray fluoroscopic image.

FIG. 4 is a front view showing a third embodiment which is further different from the above-described FIGS. 1 to 3 and is partially cut away. The top plate 34 in the third embodiment,
The top plate support bearing bracket 32, the tilt support shaft 41, and the tilt hydraulic cylinder 48 are the same or similar components as those in the above-described second embodiment (FIG. 3). 52
Is a second leg member, which supports the tilt support shaft 41 via an arm 50. A first leg member 60 is fixed to the ceiling 72. The first leg member 60 supports the second leg member 52 concentrically via quadruple cylindrical members 58, 56, 54 fitted slidably, and guides up and down movement. I have. A member denoted by reference numeral 64 is a belt, the upper end of which is wound around the drum 68, and the lower end 62 of which is attached to the arm 50. In practicing the present invention, the belt may be a wire rope or a chain.

The drum 68 is rotationally driven by a motor 70 via a speed reducer 66. When the belt 64 is involved, the top 34 rises, and when the belt 64 is unwound, the top 34 descends.

FIG. 5 is a front view showing one embodiment of a medical X-ray apparatus constructed by applying the movable table shown in FIG. 1 described above. The components for supporting and driving the top plate 34 are similar or similar to those of the first embodiment (FIG. 1A). Arm 100 fixed to first leg member 22
However, an arc-shaped arm 98 is supported, and an X-ray tube 96 is attached to the arc-shaped arm 98. On the other hand, the support 104 is suspended via the rail 16 and the carriage 14 installed on the ceiling 18, and the image receiving device 10 attached to the lower end of the support 104 faces the X-ray tube 96. Figure 5
The medical X-ray apparatus according to the embodiment shown in (1) observes an X-ray fluoroscopic image near the affected part in real time while controlling the flow of the contrast agent by arbitrarily tilting and moving the top plate part 34, and It is possible to perform IVR treatment using a technique.

FIG. 6 is a schematic block diagram of a control mechanism for driving and controlling the lifting hydraulic cylinder and the tilt hydraulic cylinder in the first, second and third embodiments shown in FIGS. 1 to 4 described above. It is. The lifting hydraulic cylinder 38 is driven and controlled by a hydraulic drive control unit 82, and the tilt hydraulic cylinder 36 (or 48) is driven and controlled by a hydraulic drive control unit 86. The system controller 88 including the console 90 outputs control signals to the hydraulic drive controls 82 and 86. When the operator operates a switch (not shown) on the console 90, the system controller 88 sends a control signal to the hydraulic drive controllers 82 and 86,
The hydraulic cylinders for raising and lowering and tilting are driven.

[0021]

As described above, the structure and function of the embodiment of the present invention are clarified. As described above, the top is rotatably supported by the expansion and contraction operation of the actuator supporting the top plate on which the subject is placed. Since the inclination of the plate portion changes, the flow of the contrast agent can be controlled. But,
Simply tilting the top plate causes a problem in that the height on the floor near the affected part of the subject on the top plate changes, which is inconvenient. Therefore, the second leg member supporting the top plate The height of the floor in the vicinity of the affected area can be adjusted by driving the head in the vertical direction, and the flow of the contrast agent can be controlled without adversely affecting the diagnosis and treatment.

[Brief description of the drawings]

1A and 1B show a first embodiment of a subject-mounted device according to the present invention, wherein FIG. 1A is an external front view, and FIG. It is.

FIGS. 2A and 2B are explanatory views of the operation of the first embodiment shown in FIG. 1 above, wherein FIG. 2A shows a state in which a subject is turned upright by rotating a top plate part in a clockwise direction in the figure. (B) depicts a state in which the subject is similarly tilted counterclockwise to lower the subject's head.

FIGS. 3A and 3B show a second embodiment different from FIGS. 1 and 2 described above, wherein FIG. 3A is a front view and FIG. 3B is a side view.

FIG. 4 is a front view showing a third embodiment which is further different from the above-mentioned FIGS. 1 to 3, and is partially cut away.

FIG. 5 is a front view showing an embodiment of a medical X-ray apparatus configured by applying the movable table shown in FIG. 1 described above.

FIG. 6 is a schematic block diagram of a control mechanism that drives and controls the lifting hydraulic cylinder and the tilt hydraulic cylinder in the first, second, and third embodiments shown in FIGS. 1 to 4 described above.

FIG. 7 is a perspective view showing a state in which diagnosis and treatment are performed by a circulatory device generally used in the related art.

[Explanation of symbols]

1 floor, 2 legs, 4 top plate, 6 subject (patient)
8 X-ray tube, 10 image receiving device, 12 arc-shaped arm, 1
4 ... trolley, 16 ... rail, 18 ... ceiling, 22, 22a,
22b: first leg member, 24, 24a, 24b: linear guide rail, 26, 26a, 26b: slide bearing, 2
8, 28a, 28b ... slide bearing, 30, 30a, 3
0b: second leg member, 32, 32a, 32b: bearing bracket for supporting the top plate, 34: top plate portion, 36, 36a, 36
b: hydraulic cylinder for tilting, 28: hydraulic cylinder for lifting,
40, 40a, 40b: lever, 41: tilting support shaft, 4
2, 42a, 42b ... link, 44, 44a, 44b ...
Bracket member, 48, 48a, 48b: hydraulic cylinder for tilting, 50: arm, 52: second leg member, 54, 5
6, 58 ... cylindrical member fitted to telescopic, 60 ...
First leg member, 62: Belt mounting portion, 64: Belt, 6
6: reducer, 68: drum, 70: drive motor, 7
2 ... ceiling, 82, 86 ... hydraulic drive control unit, 88 ... system controller, 90 ... console, 96 ... X-ray tube, 98 ...
Arc-shaped arm, 100 ... arm, 104 ... post, ab
... Arrows indicating the operation of the arc-shaped arm 12, h: minimum height above the floor, Z: vertical axis representing the rotation center line of the arc-shaped arm.

Claims (3)

[Claims] 1. A top plate portion on which a subject is mounted, a first leg member standing upright substantially perpendicular to a floor or ceiling surface on which the subject is placed, and a first leg member supported by the first leg member, A second leg member attached to the floor so as to be movable in a vertical direction and supporting the top plate so as to be rotatable; and a first leg member for reciprocatingly driving the second leg member in the vertical direction. An object mounted, comprising: an actuator; a second actuator that connects and contracts the top plate portion and the second leg member to drive expansion and contraction; and a control mechanism that controls each of the actuators in cooperation with each other. apparatus. 2. The support portion of the second leg member and the top plate is supported such that at least one of the second leg member and the top plate is movable in the vertical direction. The second leg member and the top plate are tiltably supported by at least one tilt support shaft, and one end is fixed to the tilt support shaft, and the other end is connected to the first leg member. A lever connected via a link member, wherein the tilt support shaft always holds the top plate in a horizontal position with respect to the floor surface when the top plate moves or tilts in the vertical direction. The subject mounting apparatus according to claim 1, wherein 3. A medical X-ray apparatus for irradiating a subject with X-rays and imaging internal information of the subject from the transmitted X-rays, wherein the subject-mounted device for mounting the subject is a medical device. Item 1
A medical X-ray apparatus, which is the subject-mounted apparatus according to claim 2.