JP2000210265A - Mri imaging room door and mri imaging room - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate fear of colliding with a person on opening /closing a door and to make a useless space unnecessary to improve utilization efficiency of the space by making the door disposed on an MRI imaging room equipped with an MRI imaging device a sliding door. SOLUTION: An operation room 15 equipped with an operation table 17 to operate an MRI device 13 is placed adjacent to an MRI imaging room 11 equipped with the MRI device 13. A sliding door 19 is disposed on a passage opening between the MRI imaging room 11 and the operation room 15. A door frame to support the sliding door 19 is formed of a stainless steel sheet and equipped with a door pocket part 200 to store the sliding door 19 and a drive part to open/close the sliding door. A transparent glass plate 291 is disposed on a part of the door pocket part 200 to enable the inside of the MRI imaging room to be viewed from the operation table 17 is the operation room 15. A U-shaped electromagnetic wave shield member abutting on both parts and the upper part of the closed sliding door 19 is attached to the door frame side. An electromagnetic wave shield member is also attached on the lower part of the sliding door 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an MRI (Magnetic Res
The present invention relates to a door of an MRI imaging room in which an onance imaging (magnetic resonance imaging) device is arranged and an MRI imaging room.

[0002]

2. Description of the Related Art In an MRI apparatus, the presence of high-frequency electromagnetic waves from the outside affects the obtained biological information, and high-frequency electromagnetic waves are also transmitted from the MRI apparatus. There is.

[0003] Accordingly, the MRI imaging room in which the MRI apparatus is arranged has an electromagnetic wave shielding (shielded) structure.
The user enters and exits the MRI imaging room through a manual hinged door provided in the MRI imaging room.

[0004]

However, the conventional MRI imaging room has the following problems. 1. When the door is opened from the MRI room side, if there is a person in the adjacent room side, the door may hit the person.

[0005] 2. The hinged door has a space (spac
e) is required, and the space cannot be used effectively. 3. Since the hinged door is manual, it is necessary to open and close the hinged door when the operator brings the subject into or out of the MRI room.

On the other hand, the hinged door has an electromagnetic wave blocking structure, so that it is heavy, and the operation of opening and closing the hinged door is heavy labor for the operator. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and a first object of the present invention is to provide an MRI imaging room door and an MRI imaging room that are safe and increase space utilization efficiency.

A second object is to reduce the work of the operator by using an MR.
I provide an imaging room. A third object is to provide an MRI imaging room with improved electromagnetic wave shielding efficiency.

[0008]

According to a first aspect of the present invention, there is provided an MRI imaging room door in which a door provided in an MRI imaging room in which an MRI apparatus is arranged is a sliding door. is there.

The invention according to claim 2 is an MRI imaging room in which an MRI apparatus is arranged, wherein the MRI imaging room is provided with a sliding door. By using the door as a sliding door, a collision with a person due to opening and closing of the door is eliminated, and useless space due to opening and closing of the door is not required, and safety and space use efficiency are improved.

According to a third aspect of the present invention, there is provided an MRI imaging room, wherein the sliding door is driven by a driving source. By driving the sliding door using the drive source, the operation of opening and closing the door when the subject is brought into the MRI imaging room and when the subject is carried out of the MRI imaging room is reduced. You.

According to a fourth aspect of the present invention, there is provided a first electromagnetic wave shielding member which abuts on an upper portion and both side portions of the sliding door in a closed state with the door frame supporting the sliding door according to the second or third aspect of the invention. And a second electromagnetic wave shielding member that abuts on the door frame is provided below the sliding door.
I shooting room.

A first electromagnetic wave shielding member is provided on a door frame supporting the sliding door to contact the upper portion and both side portions of the sliding door in a closed state, and a second electromagnetic member is provided at a lower portion of the sliding door to contact the door frame. The provision of the electromagnetic wave shielding member prevents electromagnetic waves from entering and leaking from the gap between the sliding door and the door frame in the closed state.

Here, if the first electromagnetic wave shielding member is always in contact with the sliding door and the second electromagnetic wave shielding member is always in contact with the door frame, the sliding resistance of the sliding door becomes large, and a large driving force for the sliding door is required. Become.

Therefore, when the sliding door is in a state other than the closed state,
The first electromagnetic wave shielding member on the door frame side is separated from the sliding door, the second electromagnetic wave shielding member on the door side is separated from the door frame, and when the sliding door is closed, the sliding door is pressed against the door frame,
It is desirable that the first electromagnetic wave shielding member on the door frame side be brought into contact with the first electromagnetic wave shielding member, and the second electromagnetic wave shielding member on the door side be brought into contact with the door frame.

It is desirable to fill the door frame or sliding door with a sound absorbing material in order to reduce the sound from inside the MRI imaging room.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to the drawings. 1. Overall Configuration of MRI Room The overall configuration of the MRI room will be described with reference to FIG. 1 which is a plan view of the MRI room of the embodiment.

An MRI apparatus 13 is arranged in the MRI imaging room 11. In an operation room 15 adjacent to the MRI imaging room 11, an operation console 17 for operating the MRI apparatus 13 is arranged.

An operation room 15 is provided in the MRI imaging room 11.
Sliding doors 19 are provided for carrying the subject into the MRI imaging room 11 from above, and for carrying the subject out of the MRI imaging room 11 to the operation room 15.

In the case of the MRI apparatus 13, the presence of high-frequency electromagnetic waves from the outside affects the obtained biological information. In addition, since high-frequency electromagnetic waves are transmitted from the MRI apparatus 3, the MRI apparatus 13 must be within the standards of the Radio Law. There is.

Therefore, the MRI imaging room 11 has an electromagnetic wave shielding structure. 2. Door Frame Next, FIG. 2 which is a view of the sliding door 19 viewed from the operation room 15 side (a view in the direction of arrow A in FIG. 1) and a view of the sliding door 19 viewed from the MRI imaging room 11 side (FIG. The door frame will be described with reference to FIG.

The door frame 100 supporting the sliding door 19 is formed by bending a thin plate of stainless steal. The door frame 100 has an opening 150.
And a door pocket 200 for storing the sliding door 19 and the opening 15
A driving unit 400 for moving the sliding door 19 between the door pocket 200 and the door pocket unit 200 is formed.

In this embodiment, a transparent glass (glass) 201 is provided in the door pocket 200 and the console 1 in the operation room 15 is provided.
7, the inside of the MRI imaging room 11 can be visually recognized.
Further, in the present embodiment, a pull bar 16 is provided on a surface of the sliding door 19 on the operation room 15 side. 3. Electromagnetic wave shielding structure The electromagnetic wave shielding structure of the door will be described with reference to FIGS.

When the sliding door 19 is in the closed state, the door frame 1
If there is a gap between 00 and the sliding door 19, electromagnetic waves leak through this gap. Accordingly, in the present embodiment, as shown in FIGS. 2 and 3, the U-shaped first electromagnetic wave shielding member 300 abutting on both sides and the upper portion of the sliding door 19 in the closed state is provided on the door frame 100 side. And a second electromagnetic wave shielding member 3 that abuts against the door frame 100 below the sliding door 19.
50 were provided.

As shown in FIG. 4 which is a cross-sectional view taken along a cutting line CC in FIG. 2, and FIG. 6 which is a cross-sectional view taken along a cutting line EE in FIG. 2, the first electromagnetic wave shielding member 300 includes two shield blocks. (sealed block) 301 and contact finger 303.

As shown in FIG. 6 which is a cross-sectional view taken along the section line EE in FIG. 2, and FIG. 5 which is a cross-sectional view taken along the section line DD in FIG. Shield block 351 and contact finger 35
It consists of three.

The shield blocks 301 and 351 are shown in FIG.
As shown in (a), a rubber core material 311 having a circular cross section is used.
Is wound around a mesh 313 made of a stainless steel wire.

The contact finger is formed by bending a long copper thin plate. As shown in FIG. 7 (b), the contact fingers 303 are subjected to bending on both sides in the cross section to impart elasticity, and an intermediate portion thereof is fixed to the door frame 100, and both sides contact the sliding door 19. is there.

As shown in FIG. 7 (c), one side of the contact finger 353 is bent to give elasticity, and the other end of the contact finger 353 is fixed to the sliding door 19 as shown in FIG. Abuts on the door frame 100.

As shown in FIGS. 4 and 5, the door frame 100
The inside of the member on the MRI imaging room side and the inside of the sliding door 19 are filled with a sound absorbing material (for example, glass wool) 103 for reducing the sound from inside the MRI imaging room 11. 4. Drive Unit 400 The drive unit 400 will be described with reference to FIGS.

Referring to FIG. 8 for explaining the drive unit 400, a motor 401 as a drive source is provided above the opening 150 of the door frame 100. A belt wheel 405 is attached to the output shaft 403 of the motor 401.

A shaft 409 rotatably provided near the motor 401 has a belt wheel 411 having a larger diameter than the belt wheel 405 and a belt wheel 4 having a smaller diameter than the belt wheel 411.
13 are fixed.

The belt wheel 4 of the output shaft 403 of the motor 401
The toothed belt 415 is wound around the shaft 05 and the belt wheel 411 of the shaft 409, and the rotation of the motor 401 is transmitted to the belt wheel 413.

At the top of the door pocket 200 of the door frame 100,
A shaft 433 provided with a belt wheel 431 having substantially the same diameter as the belt wheel 413 is rotatably provided. Belt wheel 413
The toothed belt 435 is wound around the belt wheel 431.

At the top of the sliding door 19, first and second brackets 451, 453 are mounted. The lower part of the toothed belt 435 includes the toothed belt 43.
A rail 461 is provided substantially in parallel with 5.

As shown in FIG. 5 and FIG. 6 which are sectional views taken along the cutting line DD in FIG.
A first upper rail 463 and a second upper rail 465
And a third lower rail 467.

The first bracket 451 includes a rail 46.
An upper wheel 471 rolling on the first upper rail 463
And a lower wheel 473 rolling on the lower rail 467, and the second bracket 453 is provided with a second wheel 461 of the rail 461.
An upper wheel 475 rolling on the upper rail 465 is provided.

First and second upper rails 4 of rail 461
61 and 463 extend obliquely upward from the main body 462 toward the operation room 5 side. That is, as shown in FIG. 8, the first and second upper rails 46 of the rail 461 extend obliquely upward in a direction away from the door frame 100.
Recesses 463a and 465a are formed in 3,465, respectively. The positions of these depressions 463a and 465a are such that when the sliding door 19 is in the closed state, the upper wheel 471 of the first bracket 451 falls into the depression 463a,
The upper wheel 475 of the second bracket 453 is recessed 465
The position is set so as to fall into a.

Therefore, when the sliding door 19 in the open state as shown in FIG. 9A is closed and closed, as shown in FIG. 9B, the upper wheel 471 is recessed in the upper rail 463 as shown in FIG.
And the upper wheel 475 is recessed in the upper rail 465.
The sliding door 19 falls diagonally downward toward the door frame 100.

On the other hand, in the present embodiment, the first electromagnetic wave shielding members 30 provided on both sides and the upper part of the door frame 100 are provided.
0 shield block 301, contact finger 30
3 is a shield of the second electromagnetic wave shielding member 350 provided below the sliding door 19 only when the sliding door 19 is in the closed state and the sliding door 19 is lowered obliquely downward toward the door frame 100. The block 351 and the contact finger 353 are attached so as to come into contact with the door frame 100 only when the sliding door 19 is closed and the sliding door 19 is lowered obliquely downward toward the door frame 100.

The second bracket 453 is provided with a connecting bracket 480 attached to the toothed belt 435. The upper part of the sliding door 19 is provided with a connecting bracket 48.
The lower part of the sliding door 19 is guided by the following configuration while being attached to and guided by the toothed belt 435 through the center 0.

As shown in FIG. 4 to FIG.
On r), rollers 501, 503, 505 are provided. On the other hand, the lower surface of the sliding door 19 is guided by providing a concave portion 490 fitted to the rollers 501, 503, 505.

Next, the operation of the above configuration will be described. The operator turns on a switch (not shown) to drive the drive unit 40.
When the motor 401 is driven, the pulley 405 rotates, and this rotation is performed via the toothed belt 415.
11. The belt wheel 413 rotates.

When the belt wheel 413 rotates, the toothed belt 435 moves, and the sliding door 19 moves between the door pocket 200 of the door frame 100 and the opening 150 via the connecting bracket 480.

According to the above configuration, since the door of the MRI imaging room 11 is the sliding door 19, collision with a person due to opening and closing of the door is eliminated, and useless space due to opening and closing of the door is not required. Use efficiency increases.

Sliding door 19 using motor 401 (drive source)
, The operation of opening and closing the door by the operator when the subject is carried into the MRI imaging room 11 and when the subject is carried out of the MRI imaging room 11 is reduced.

The sliding door 19 is closed, the sliding door 19 is lowered obliquely downward toward the door frame 100, and the shield block 301 of the first electromagnetic shielding member 300 of the door frame 100 and the contact finger 303 are positioned above the sliding door 19. When the shield block 351 and the contact finger 353 of the second electromagnetic wave shielding member 350 of the sliding door 19 abut against the door frame 100, electromagnetic waves from the gap between the sliding door 19 and the door frame 100 are brought into contact. Intrusion and leakage can be prevented.

Further, in the present embodiment, in a state other than the closed state, the first electromagnetic wave shielding member 300 provided on the door frame 200 is attached to the sliding door 19, and the second electromagnetic wave shielding member 350 provided on the sliding door 19 is attached to the sliding door 19. Since the sliding door 19 does not come into contact with the door frame 200, sliding resistance when opening and closing the sliding door 19 is reduced, and the motor 40
1 can be reduced in power consumption and downsized.

[0048]

According to the first and second aspects of the present invention, as described above.
According to the described invention, it is possible to realize a door for an MRI imaging room and an MRI imaging room that are safe and increase space use efficiency.

According to the third aspect of the present invention, it is possible to realize an MRI imaging room that reduces the work of the operator. According to the fourth aspect of the present invention, it is possible to realize an MRI imaging room in which the efficiency of blocking electromagnetic waves is improved.

[Brief description of the drawings]

FIG. 1 is a plan view of an MRI imaging room of an embodiment.

FIG. 2 is a view in the direction of arrow A in FIG. 1;

FIG. 3 is a view in the direction of arrow B in FIG. 1;

FIG. 4 is a sectional view taken along section line CC of FIG. 2;

FIG. 5 is a sectional view taken along section line DD in FIG. 2;

FIG. 6 is a sectional view taken along section line EE in FIG. 2;

FIG. 7 is an enlarged cross-sectional view of the shield block shown in FIGS. 4 to 6;

FIG. 8 is a diagram illustrating a driving unit.

FIG. 9 is a diagram illustrating an operation of moving in the door frame direction when the sliding door is in a closed state.

[Explanation of symbols]

 11 MRI imaging room 13 MRI equipment 19 Sliding door

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Etsio Yomoto 127-7 Asahigaoka 4-chome, Asanogaoka, Hino-shi, Tokyo Inside (72) Inventor Hideo Kawano 4-7-1 Asahigaoka, Hino-shi, Tokyo No. 127 GE Yokogawa Medical System Co., Ltd. (72) Inventor Fumiyoshi Sato 6-3-10 Minamishinagawa, Shinagawa-ku, Tokyo Fuso Electric Co., Ltd. F-term (reference) 4C096 AB46 AB48 FC04

Claims (4)

[Claims] 1. A door for an MRI imaging room, wherein a door provided in an MRI imaging room in which an MRI apparatus is arranged is used as a sliding door. 2. An MRI imaging room in which an MRI apparatus is arranged, wherein an MRI imaging room is provided with a sliding door. 3. The MRI imaging room according to claim 2, wherein the sliding door is driven by a driving source. 4. A door frame that supports the sliding door, a first frame contacting an upper portion of the sliding door and both side portions in a closed state.
The MRI imaging room according to claim 2, wherein an electromagnetic wave shielding member is provided, and a second electromagnetic wave shielding member that is in contact with the door frame is provided below the sliding door.