JPH04164437A - Traveling type x-ray diagnostic device - Google Patents

Abstract

PURPOSE:To eliminate any member interfering with the view field of an operator when the X-ray diagnostic device concerned is moved toward a patient to be inspected and reduce the weight of an elevating/sinking mechanism of an X-ray tube supporting part by equipping the spring balance function which exerts weight balancing for an X-ray source holding part. CONSTITUTION:Weight of an X-ray tube holding part 23 applied to an expanding/contracting pillar 22 is conducted to a cone pulley 28 via a rack 26 and pinion 27 installed to a component member 22b and balanced with the resilient force of a spring 29 in connection with a wire W wound into the pulley 28. Change in the weights of the pillar 22 and X-ray tube holding part 23 in the position where the pillar makes expansion/contraction can be compensated. The operator sinks the X-ray tube holding part 23 to a level which does not obstruct his own view field at least, and in this condition, this X-ray diagnostic device concerned is moved toward the patient. There is no fear that any obstacle remains within the view field of the operator, so that traveling between the patient and the device accommodation place can be done smoothly.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention provides a mobile The present invention relates to a radiation diagnostic device.

(Prior Art) Regarding such kind of conventional devices, FIGS.
This will be explained with reference to the figures. As shown in FIG. 4, the device has a main body 3 equipped with a handle 2 mounted on a trolley 1. This main unit is compatible with power supplies such as capacitor type and external power supply type.
It consists of a controller including a console that controls the tube voltage kV, tube current mA, irradiation timing, etc. based on the X-ray diagnostic conditions. Further, the cart 1 is provided with an upright column 4, and an X-ray tube holding portion 5 is provided on the column so as to be movably guided in a plurality of directions. That is, this X-ray tube holder can move horizontally (in the X direction), vertically (in the Y direction), and rotate (in the 2nd direction).
direction) is possible.

In the above configuration, a balance mechanism as shown in FIG. 5 is employed in order to enable manual movement of the X-ray tube holder 5 in the vertical direction.

That is, the X-ray tube holding portion 5 is engaged with a guide rail 6 provided within the column 4 via a support roller. In addition, within the pillar 4, a balance weight 8 is connected to a pair of pulleys 9 in order to balance the weight with respect to the X-ray tube holding part 5.
and is connected to the X-ray tube holder 5 via a wire 10.

The conventional device described above operates as follows. That is, the operator first operates the handle 2 to move the device to the vicinity of the patient waiting in the hospital room. Next, for example, when photographing the patient's leg, the X-ray tube holding section 5 is moved in each direction to position the X-ray tube supported thereon above the patient's leg. Thereafter, an X-ray film cassette is inserted between the patient's legs and the bed, and X-ray photography is performed under desired X-ray diagnostic conditions.

After completing the X-ray diagnosis, the operator moves the device back to its original storage location.

(Problems to be Solved by the Invention) In the conventional device described above, the X-ray tube holding section 5 is
Since the vertical movement is guided by the pillar 4 standing upright above, the pillar 4 always stands at the same height no matter where the X-ray tube holding part 5 is moved to any lower position other than the highest position. Become. Therefore, when moving the apparatus, even if the X-ray tube holder 5 is lowered to move away from the operator's field of view, the column 4 will still block the operator's view. Therefore, there is a drawback in that the operability of the operator in moving the device to the patient's position cannot be improved much.

In addition, since this device uses a balance weight 8 to balance the weight with respect to the X-ray tube holder 5, the weight of the entire device increases accordingly, and transportation and installation of the device are troublesome. It also had the disadvantage of being uneconomical.

This invention was made to solve the above problems,
The purpose of this is to create a mobile X-ray system that does not have any members that obstruct the operator's view when moving the device to the subject position.
To provide radio diagnostic equipment.

Another object of the present invention is that there is no member that obstructs the operator's view when moving the device to the subject position, and
An object of the present invention is to provide a mobile X-ray diagnostic device that can reduce the weight of a lifting mechanism for a ray tube support.

[Configuration of the Invention (Means for Solving the Problems) In order to achieve the above object, the present invention includes a cart that can run on a floor, and a power source, a controller, etc. placed on the cart. a main body, an extensible column member installed upright on the trolley, and an X-ray source holder that is supported by the column member and whose height position from the floor surface of the X-ray source is changed by the extension and contraction movement of the column member. This is a mobile X-ray diagnostic device characterized by comprising:

Further, the present invention is characterized in that the X-ray source holder includes a spring balance mechanism that performs a weight balance function.

(Function) When performing an X-ray diagnosis on a subject waiting in a hospital room, an operator first manually pushes down the X-ray source holder, for example. This simultaneously causes the column member to which it is attached to be retracted, removing the top of the column member from the operator's view. In this way, the operator can move the apparatus to the subject with a sufficiently open front field of view, thereby significantly improving the moving operation.

In addition, a spring balance is used in the balance mechanism that balances the weight of the X-ray source holder, which reduces the weight of the entire device, further improving the operability of moving the device. .

(Embodiment) The configuration of an embodiment of the present invention will be described with reference to FIGS. 1 and 2. As shown in FIG.
It is constructed by installing a telescopic column 22 (in the Y direction) so as to stand upright on a trolley 21 on which a main body 20 including a power source, a controller, etc. is mounted. This column will be described in detail later, but it includes a plurality of cylindrical members 22 a, each having a different diameter and directly connected to the pre-arrangement.
22 b, ..., all members are housed within the member 22a with the largest diameter at the shortest size of the column, and each member protrudes as much as possible from the adjacent connecting member at the longest size of the column. .

One end of the X-ray tube holder 23 is fixed to the upper end of the uppermost member 22c of the telescopic column 22. This X-ray tube holder is expandable and retractable in the horizontal direction (X direction), and has an X-ray tube attached to its tip.
4 is installed.

In addition, the X-ray tube holder 23 can rotate around the pillar 22 (
It is configured in two directions).

Next, the detailed structure of the telescopic column 22 will be explained with reference to FIG. 2. Figure 2 is an enlarged cross-sectional view of the telescopic column.
An example of five constituent members is shown. That is, the telescopic column 22 includes five cylindrical structural members 22a to 22e, each having a diameter of 22a>22b>22c>22d>2.
2e, and is configured such that the protruding lengths of the adjacent members can be freely changed by sliding on each other.

Three central components 22b of the telescopic column 22.

A pulley 25b is provided in the upper part of each of 22c and 22d.

Attach 25 c and 25 d. The lower end 22a1 of the lowermost component 22a and the center component 22c
The wire W1 connecting the lower end 22c1 of the component 2
It is suspended on pulley 25b of 2b. In addition, the component 22b
The wire W2 connecting the lower end 22b1 and the lower end 22dl of the component 22d is connected to the pulley 25c of the component 22c.
Suspended on. Furthermore, the lower end 22c of the component 22c
1 and the lower end 22e1 of the uppermost component 22e is suspended from the pulley 25d of the component 22d.

A rack 26 is attached to the lower end of the component 22b, and a cone pulley 28 is attached to the shaft of a binion 27 that engages with this rack.
Connect the axes of. A spring 27 having an elastic force commensurate with the weight of the X-ray tube holder 23 is connected to the wire W4 wound around this cone pulley. corn pulley 28
The amount of winding of the wire W4 wound around the cone pulley 28 is controlled by the vertical movement of the component unit 22b provided with the rack 26. As a result, the elastic force of the spring 29 is changed, and as a result, a change in the optimal weight balance due to the expansion and contraction movement of the column 22, that is, the vertical movement of the X-ray tube holder 23, is corrected.

Next, the operation of the above configuration will be explained with reference to FIG. Before moving the device to the bed position in the hospital room where a patient requiring an X-ray diagnosis is waiting, the operator may, for example, manually perform an
Push down the wire tube holding part 23. As a result, the pillar 22 is contracted, and the X-ray tube holding part 23 attached to the upper end thereof is
is lowered.

Here, the expansion and contraction operation of the pillar 22 will be explained in detail with reference to FIG. 2. When the operator pushes down the X-ray tube holder 23, the uppermost component 22 to which it is fixed
e is also pushed down. At this time, each pulley 25b,
Wires Wl, W suspended on 25 c, 25 d
2. When each of the constituent members 22b, 22c, and 22d is moved downward so that the respective left and right lengths of W3 maintain the same dimensional relationship as shown, the amounts of movement thereof are all equal.

On the other hand, each wire Wl, W2. When the dimensional relationship of W3 is lowered with the valve open -, each component 22b
22e are lowered by a distance commensurate with the size length, which changes from time to time.

Further, the weight balance of the X-ray tube holder 23 will be explained as follows. That is, the weight of the X-ray tube holder 23 applied to the telescopic column 22 is transmitted to the cone pulley 28 via the rack 26 and pinion 27 attached to the component 22b. The gravitational force propagated in this manner on the cone pulley 28 is balanced by the elastic force of the spring 29 connected to the wire W4 wound therein. At this time, the pillar 22 and the X-ray tube holding part 23
Cone pulley 28
can be compensated for by the existence of

Using the above-described mechanism, the operator lowers the X-ray tube holder 23 to at least a height that does not obstruct his/her own field of view. This state is shown in FIG. In this state, the operator only has to move the device to the patient's position. After that, the height position (Y
), rotational position (Z), and horizontal position CX), the X-ray tube position is determined, the X-ray film cassette is set at a predetermined position, and X-ray photography is performed.

After the imaging is completed, the X-ray tube holding section 23 is held at a predetermined height position again, and the apparatus is moved to its storage section. On this occasion,
Since the X-ray tube holding section 23 can be held at a low position, it is also possible to reduce the storage space of the apparatus.

[Effects of the Invention] As described above, according to the mobile X-ray diagnostic apparatus of the present invention, since the X-ray source holding section is supported on the trolley using a telescopic column member, X-ray Even when the source holder is lowered, there is no risk of obstacles remaining in the operator's field of vision, allowing for smooth movement between the patient and the device storage.

[Brief explanation of drawings]

Fig. 1 is an external view schematically showing the structure of an embodiment of the present invention, Fig. 2 is a diagram for explaining the structure of the main parts in the embodiment, and Fig. 3 is an illustration of the operation of the embodiment. FIG. 4 is a diagram for explaining the conventional example, and FIG. 5 is an explanatory diagram showing the configuration of the main part of the conventional example. 20...Main body 21...Dolly 22...
Telescoping column 23...X-ray tube holding section agent: Patent attorney Noriyuki Chika; agent: Patent attorney Takeda Kondo 111 Figure 3: 211

Claims (3)

[Claims] (1) A cart that can run on the floor, a main body including a power source, a controller, etc. placed on the cart, a telescopic column member installed upright on the cart, and the column. 1. A mobile X-ray diagnostic apparatus comprising: an X-ray source holder supported by a member and whose height from a floor surface is changed by expansion and contraction of the X-ray source holder. (2) The mobile X-ray diagnostic apparatus according to claim 1, further comprising a spring balance mechanism that performs a weight balance function for the X-ray source holder. (3) The mobile X-ray diagnostic apparatus according to claim 1 or 2, further comprising means for adjusting the elastic force of the spring according to the extension/contraction movement distance of the column member.