JPH037142A - Framing for ct - Google Patents

Abstract

PURPOSE:To omit use of a flapper and suppress the manufacturing cost for a framing cover by allowing a stand or a power cylinder to rise while inclined to or against the tilting frame side from a sensing bottom constituent member. CONSTITUTION:A stand 3 is raised while inclined against the tilting frame 9 side from a framing bottom constituent member 1, which lowers the occupied space on the front cover 11a side below the stand 3, so that the lower part of the front cover 11a on the stand 3 side does not collide with the upper part of the stand 3 even without provision of any flapper or the like at the time of tilting in the direction in which the tilting frame 9 rises. In the same manner, a power cylinder 5 is raised while inclined to the tilting frame 9 side from the framing bottom constituent member 1, and thus the under part of a back face cover 11b on the power cylinder 5 side does not collide with the under part of the power cylinder 5 even without provision of flapper, etc., at the time of tilting in the direction in which the tilting frame 9 descends. This allows omission of a flapper to lead to reduction of the manufacturing cost for a framing cover 11.

Description

Detailed Description of the Invention [Objective of the Invention] (Industrial Application Field) The present invention provides a CT system equipped with a tilt mechanism that tilts a mount in order to perform tomography at various angles with respect to the body axis of a subject.
The present invention relates to a frame-building device for commercial use, and particularly relates to improvements in the tilt mechanism and structure of the frame housing.

(Prior Art) Currently, X-ray CT apparatuses equipped with a tilt mechanism are in practical use.

This tilt mechanism allows the mount to be placed upright and photographed in a plane perpendicular to the patient's body axis when inserted into the imaging space formed on the mount. By tilting it to the side.

Tomography is performed at various angles with respect to the subject's body axis.

As this tilt mechanism, a mechanism as shown in FIG. 4 is used. In this Im, the pedestal bottom component 1
a stand 3 that can be raised up from the stand 3; a telescopic power cylinder 5 that can be raised up from the bottom component 1 of the stand while its lower end is pivoted; a rotating member 7 having an upper end pivoted and having the stand 3 pivoted at the other end;
and.

The rotating member 7/) is provided with a tilting frame 9 fixed to the end portion of the side on which the power cylinder 5 is pivoted and tilted by the rotation of the rotating member 7.

In this tilt mechanism, the tilting frame 9 is shown in FIG.
) and FIG. 4(b), the rotation of the rotating member 7 due to the contraction or expansion of the bown ring 5 causes the tilting to the right or left in the paper of FIG. 4, respectively. Due to this tilting, the pedestal cover 11 fixed to the tilting frame 9 and other members provided within the pedestal cover 11 also tilt.

With such arrangement of each member, the tilting frame 9
when tilting to the right or left.

The lower part of the pedestal cover 11 is the pedestal bottom component 1
It collides with the power cylinder 5 or the lower part of the stand 3, which is vertically raised from the ground.

Therefore, the flappers 13a and 13b are connected to the stand cover 11.
The lower part of the frame is connected by hinges 15a and 15b, and when the pedestal cover 11 is tilted, the pedestal cover 11 and the stand 3 or the power cylinder 5 are connected.
The stand 3 or the power cylinder 5 is surrounded by flappers 13a and 13b.

(Problem to be Solved by the Invention) However, in order to provide the flappers 13a and 13b to the pedestal cover 11, when manufacturing the pedestal cover 11, it is necessary to mold a flat part with a predetermined portion removed or to remove a predetermined portion. It takes a lot of man-hours to fit the flappers 13a and 13b formed in other steps into the parts, and the cost involved cannot be ignored.

The present invention has been made in consideration of the problems of the prior art, and it is an object of the present invention to provide a CT frame apparatus that can omit the flapper and reduce the manufacturing cost of the frame cover.

C Configuration of the Invention] (Means for Solving the Problems) In order to achieve the above object, the CT racking device according to the present invention is arranged in the depth direction of the rack and rotates around one end. a freely movable rotating member; a tilting frame fixed to the other end opposite to the one end of the rotating member;
a telescoping power cylinder whose one end is pivoted to the tilting frame side end of the rotating member and whose other end is pivoted to the bottom component of the gantry, and whose upper end is attached to the rotating member; The present invention further comprises: a stand that is pivoted to an end on the rotational axis side and whose lower end is raised from the gantry bottom component so as to be tilted from the tilting frame side in the rotational axis direction. It is said that

Another aspect of the present invention provides a rotating member that is disposed in the depth direction of the pedestal and is rotatable about one end.

a tilting frame fixed to the other end of the rotating member facing the one end; a telescoping power cylinder whose lower end is pivoted to the gantry bottom component member so as to tilt toward the tilting frame; and whose upper end is pivoted to the end of the rotating shaft of the rotating member The present invention further comprises a stand whose lower end is erected from the gantry bottom component.

(Function) According to the above-described configuration, the following effects are achieved. That is, by tilting and standing up the stand or the power cylinder from the bottom component of the gantry toward the opposite side of the tilting frame or towards the tilting frame, the space occupied by the gantry cover below the stand or the gantry cover below the power cylinder is raised. By reducing the space occupied by the stand side or the power cylinder side, even if the stand cover is flat and does not have a flapper, when the tilting frame is tilted in the upward or downward direction, the space under the stand cover on the stand side or power cylinder side can be reduced. Since the side portions do not collide with the stand or the lower portion of the power cylinder, the flapper can be omitted and the manufacturing cost of the gantry cover can be reduced.

(Example) Hereinafter, an example of the CT frame construction apparatus according to the present invention will be described with reference to FIGS. 1 and 3.

In FIG. 1 showing an embodiment of a CT frame apparatus according to the present invention (for example, an X-ray CT frame apparatus), inside this frame apparatus there is an X-ray tube with an imaging space (not shown) in between. 21 and a detector 23 are arranged facing each other. This X-ray tube 2
1 is a detector 2 that rotates around the center assumed in the aircraft space and also rotates around the center;
3, X-rays are irradiated in a fan shape.

The signal obtained by the detection fi 23 is subjected to processing such as amplification, integration, digital conversion, and single image reconstruction, and the contents of the processing results are displayed as images on a monitor such as a CRT (not shown).

The X-ray CT and its gantry having such a configuration are equipped with a tilt mechanism in order to perform tomography at various angles with respect to an opposite axis of a subject (not shown).

This tilt mechanism includes a gantry bottom component 1, a stand 3, which has the same function as each component shown in Ueda's Figure 4.
．． A power cylinder 51, a rotating member 7, a tilting frame 9, a front cover 11a, a rear cover 11b, etc. that constitute the pedestal cover 11 are used.

In this gantry device, the stand 3 is tilted up from the gantry bottom component member 1 to the side opposite to the tilting frame, and the power cylinder 5
is tilted upward from the gantry bottom tank member 1 toward the tilting frame 9 side.

That is, as shown in FIG. 2, the stand 3 and the bown cylinder 5 are arranged so as to be released upward from each other, and the power cylinder 5 is oriented vertically so that the expanding and contracting part is on the lower side. On the contrary, it is housed in the upper end, and the telescopic drive motor 25 is housed in the upper end.
Its lower end is raised from the gantry bottom component 1 through an opening 27 provided in the side of the tilting frame Qllll of the stand 3.

In this way, by tilting and raising the stand 3 from the gantry bottom component 1 to the opposite side of the tilting frame 9, the front cover 11 below the stand 3. Since the space occupied by a[ll is reduced, as shown in FIG. Even if it is not provided, it will not collide with the lower part of the stand 3.
Similarly, the power cylinder 5 is attached to the base bottom component 1.
By tilting and standing up toward the tilting frame 9 side, the occupied space on the rear cover 11b side below the power cylinder 5 is reduced, so that the direction in which the tilting frame 9 descends is When tilting to
Even if a flapper or the like is not provided, the lower part of the side rear cover 11t will not collide with the lower part of the power cylinder 5.

With such a structure, the flapper can be omitted, and by omitting the flapper, the mount device is provided with a flap collar. The manufacturing cost of the pedestal cover 11 can be reduced by the second method.

Furthermore, the reliability of the device can be improved due to the low RvA of one part. Moreover, the pedestal cover can be made to have a neat appearance and design.

[Effects of the Invention] As explained in detail above, in the CT frame apparatus according to the present invention, the stand or the power cylinder is moved from the frame bottom component to the opposite side of the tilting frame or to the tilting frame side. By standing it up at an angle, that is, by lowering the space occupied by the pedestal cover below the stand or by lowering the space occupied by the pedestal cover below the power stand, it is possible to use a flat pedestal cover without a flapper. Even if the tilting frame is tilted in the upward or downward direction, the lower part of the stand cover on the stand or power cylinder side will not collide with the lower part of the stand or power cylinder. Therefore, the production cost of the pedestal cover can be reduced by omitting the flapper.

[Brief explanation of drawings]

FIG. 1 is an explanatory view showing the main part configuration of an embodiment of a CT frame apparatus according to the present invention, FIG. 2 is a perspective view showing an embodiment of a stand and a power cylinder in a standing state,
Figures (a) and (b) are main part sectional views explaining the operating state of the tilt mechanism in the gantry shown in Figure 1, and Figure 4 (a).
) and (b) are sectional views of main parts of a conventional gantry device. 1... Frame bottom component 3... Stand 5...
Power cylinder 7...Rotating member 9...Tilt frame 11a, llb...Base cover 21/X-ray tube 23...Detector

Claims (2)

[Claims] (1) A rotating member disposed in the depth direction of the frame and rotatable around one end; a tilting frame fixed to the other end of the rotating member that faces the one end; A telescoping power cylinder has one end pivoted to the tilting frame side end of the movable member, and the other end pivoted to the gantry bottom component member to stand up; and a stand whose lower end is raised from the gantry bottom component so as to be pivoted to the shaft side end of the frame and tilted from the tilting frame side in the direction of the axis of rotation. CT mount device. (2) a rotating member disposed in the depth direction of the frame and rotatable about one end; a tilting frame fixed to the other end of the rotating member that faces the one end; and an upper end. is pivoted to the end of the rotating member on the side of the tilting frame, and its lower end is pivoted to the bottom component of the gantry and raised so as to be tilted toward the tilting frame from the axial direction of the rotation. a telescoping power cylinder; a stand having an upper end pivotally attached to a rotating shaft side end of the rotating member and a lower end erected from the gantry bottom component;
A CT mount device comprising: