JP2003126058A - Soundproof and voice providing device for mri, sound proof and voice providing equipment for mri, and mri apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a soundproof and voice providing device for a MRI apparatus which can reduce noise and can provide voice effectively. SOLUTION: Each of the soundproof and voice providing device 10a, 10b for the MRI apparatus has a main part 12b for containing the ear, a part 12a for enclosing the ear which protrudes from the periphery of the main part 12b for containing the ear and is made of a deformable and soundproof material, and an ear containing part 12 where the ear of the subject, who receives a diagnosis through the MRI apparatus, is contained at a recessed part 12r formed by surfaces of the part 12a for enclosing the ear and of the main part 12b. A screw 18a of a movement controlling part 18 passes through a penetrating screw hole 26a at a fixation supporting part 26, screws in a screw hole 16a at a supporting part 16 for the ear containing part, and secures the supporting part 16 for the ear containing part to the fixation supporting part 26. Since the supporting part 16 moves by corresponding to the rotations of the screw 18a, the ear containing parts 12, 12 where the both ears of the subjects are contained can be moved closer or further. No noise gets inside the recessed part 12r when the ear containing parts 12, 12 approach the ears closely. An operator's voice is transmitted to the subject from a voice transmitting tube 20 with an earplug 22 attached to the end.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to (nuclear magnetic resonance diagnosis).
MRI equipment and MRI soundproofing for MRI equipment
The present invention relates to a voice provider and an MRI soundproof / voice providing device.

[0002]

2. Description of the Related Art An MRI apparatus is an apparatus for diagnosing a diseased part of a patient by using a nuclear magnetic resonance phenomenon, and it has been pointed out that noise is large at the time of the diagnosis, particularly when a gradient coil is driven. The magnitude of the noise depends on the configuration and scale of the MRI apparatus, but is, for example, 100 to 120 dB.
It is said to reach the level.

As a countermeasure against such noise, the simplest method is to use a well-known earplug made of a sponge or the like which is deformed when heat and stress are applied. That is,
A subject sleeping on the bed of the MRI apparatus or a subject sitting on a chair (hereinafter, abbreviated as subject) deforms the earplugs according to the shape and size of his / her own ear and puts it in the ear hole. Mounting. However, even if such earplugs are used, the level of noise received by the subject is said to be reduced only to about 80 to 90 dB, for example. The way people feel about noise depends on the subject, but MR is
It is said that some examinees are concerned about noise during diagnosis by the I device.

Such a high noise level means, for example, that the operator of the MRI apparatus gives the subject a diagnosis-related situation,
Even if you try to give instructions by voice, it may not be delivered correctly. Therefore, MR
From the viewpoint of I diagnosis, it is desired to further reduce the noise level.

Diagnosis by the MRI apparatus is carried out in the bore of the MRI apparatus. However, since the bore is relatively narrow, it is pointed out that some examinees may feel a sense of pressure when entering the bore. . In addition, it has been pointed out that the high noise level may make some subjects feel uneasy about being diagnosed by the MRI apparatus.

As a method for reducing the noise level, in particular, as a method for gradually reducing the noise level as compared with the above-mentioned method using earplugs, for example, the earmuff 100 illustrated in FIGS. 5A to 5D is used. A method has been proposed. In FIG. 5A, the subject sleeps on his back and the earmuffs 10
5 is a view from the side of a state in which 0 is worn and undergoes MRI diagnosis, FIG. 5 (B) is a view from above of the state of FIG. 5 (A), and FIG. It is the figure which partially expanded the illustration of B), and Drawing 5 (D) is an enlarged view of ear muff 100. The ear muffs 10 illustrated in FIGS.
Reference numeral 0 denotes an arm 110, a pair of earmuff main bodies 102 provided on both sides of the arm 110 in accordance with both ears of the subject, and fixed to the earmuff main body 102 to accommodate the subject's ears. An ear pad 104 made of a material such as a sponge that can be easily deformed, a high-elastic rubber earphone 106 that is provided at the bottom of the ear pad 104 and inserted into an ear hole of a subject, and an earphone. And a voice transmission tube 108 for guiding sound to 106. The ear muff 100 has a shape similar to a known headphone used when listening to music.

MR using such ear muff 100
When performing the I diagnosis, the head of the subject lying on the back in the MRI apparatus is fixed by the head fixing belt 200, and the ear pad 104 arranged on both sides of the arm 110 from above.
To the ear of the subject so that the earphone 106 is inserted into the ear hole of the subject. From the voice transmission tube 108, for example, an instruction from the operator of the MRI apparatus or the like is transmitted to the subject.

[0008]

The ear muffs 1 described above are to be solved.
When 00 is used, the degree of adhesion to the head of the subject is arm 1
10, the arm 110 is not adjustable according to the size and shape of the subject's head, so the ear muff 100 may not be adjusted depending on the size and shape of the subject's head. It may not fit and the desired soundproofing effect may not be achieved.

Since the earphones 106 are arranged in a fixed position, when the ear pad 104 is applied to the subject, the earphones 106 may not be inserted in the subject's ears in a fitted state. In addition, a highly elastic rubber earphone 106, which is not easily deformed, is often not sufficiently inserted into the ear hole of the subject, and since the earphone 106 is fixed, the subject may move when the subject moves his or her head. It is easy to get out of the person's ear. Further, the ear pad 104 cannot cover the subject's ear in a sealed state, and noise may leak into the ear pad 104, causing the subject to feel a considerable amount of noise. In such cases, you will encounter the same problems as with regular earplugs.

Although fixing the head with the head fixing belt 200 is advantageous from the viewpoint of diagnosis, if the head is always fixed during the diagnosis and the subject cannot move, the subject will be injured. May cause mental distress.

The present invention solves the above-mentioned problems, can further reduce the noise level, can adapt to the size and shape of the head of the subject, and the subject feels an uncomfortable feeling of wearing. It is an object of the present invention to provide an MRI soundproofing / sound providing device and an MRI soundproofing / sound providing device that do not perform the operation. Another object of the present invention is to provide an MRI apparatus capable of providing an appropriate sound to a subject undergoing MRI diagnosis by using the MRI soundproofing / voice providing apparatus and the MRI soundproofing / voice providing apparatus.

[0012]

According to a first aspect of the present invention, there is a deformable and soundproof effect which is arranged so as to project from an ear housing main body and a peripheral edge of one surface of the ear housing main body. An ear enclosure made of a certain material, and a recess formed by the protruding ear enclosure and the surface of the ear accommodating main body lying on a bed to be diagnosed by the MRI apparatus. An ear accommodation means capable of accommodating an ear of an examiner or a subject (examinee) sitting in a chair, and an ear accommodation means penetrating through a hole formed in the ear accommodation main body of the ear accommodation means. Holding / moving means for holding the voice transmitting means and the ear housing means held by the holding means for holding the MRI soundproofing / voice providing device, and moving the holding means so as to move away from the holding means or approach the holding means. There is provided an MRI soundproofing / voice providing device comprising:

[0013] Preferably, there is further provided an earplug detachably attached to the tip of the sound transmitting means on the ear housing main body side of the ear housing means.

[0016] Preferably, the ear enclosure part made of a deformable and soundproof material, which is disposed so as to project on the peripheral edge of one surface of the ear housing body of the ear housing means, holds and moves. When the MRI apparatus is pressed in the vicinity of the subject's ear by the means, the subject's ear is deformed according to the shape around the subject's ear to accommodate the subject's ear in the recess, and the ear It is configured to prevent sound from entering the recess from the outside of the accommodating means.

[0015] Preferably, the MRI soundproofing / audio providing device further includes an ear housing part support portion provided on the ear housing body side of the ear housing means. The ear housing support section,
The sound transmission includes a first hole communicating with a hole formed in the ear housing body of the ear housing and a second hole for drawing the sound transmitting means to the outside of the ear housing support. The means is introduced from the second hole of the ear housing support portion and introduced into the ear housing support portion, and the first hole of the ear housing support portion and the ear housing body of the ear housing means. It is provided in a loosely fitted state by penetrating the hole formed in.

[0016] Preferably, the holding means is a fixed support portion arranged upright on the head mounting portion of the MRI apparatus,
The holding / moving means is provided with a movement operation part having a screw at a tip thereof, an axial hole provided in the ear housing support part, a screw hole for receiving a screw of the movement operation part, and the fixed support part provided with the screw hole. And a through-screw hole formed so that a screw provided in the movement operation portion can be screwed into and penetrated. The moving operation part is rotated to screw the screw of the moving operation part into a through screw hole formed in the fixed support part so as to pass through the through screw hole, and the moving operation is performed with the fixed support part sandwiched therebetween. Through the fixed supporting portion, the ear accommodating portion supporting portion holding the ear accommodating means and the moving operation portion by being screwed into a screw hole of the ear accommodating portion supporting portion placed at a position opposed to the portion. The connection between the fixed support portion and the ear housing portion support portion can be changed according to the rotation of the movement operation portion.

Further preferably, the holding means is MRI.
The holding and moving means is a fixed supporting portion arranged upright on the head mounting portion of the device, and the holding and moving means includes a moving operation portion having a screw at the tip and an end portion of the ear housing supporting portion. A shaft that is connected and provided with a screw hole for receiving a screw of the movement operation unit, a spring that is arranged around the shaft, and a screw that is provided in the movement operation unit is screwed into the fixed support unit. A through-screw hole formed so as to penetrate therethrough. By rotating the movement operation part, the screw of the movement operation part is screwed into the through-screw hole formed in the fixed support part, the through-screw hole is further penetrated, and the fixed support part is sandwiched. By screwing into the screw hole of the shaft placed at a position facing the movement operation part, the ear accommodation part support part for holding the ear accommodation means and the movement operation part are fixed support part and the shaft. The spring, which is coupled via the shaft and is located around the shaft and between the fixed support portion and the ear accommodation portion support portion, is applied with a pressure in a direction from the ear accommodation means toward the fixed support portion. When it does, it contracts and expands in a free state where no pressure is applied to change the distance between the fixed support portion and the ear housing portion support portion.

According to a second aspect of the present invention, the headrest device and the head rest portion of the MRI apparatus near the position where the headrest device is disposed are disposed at a predetermined interval. An MR including a pair of fixed supporting means and an MRI soundproofing / sound providing device having a pair of MRI soundproofing / sound providing means provided corresponding to the pair of fixed supporting means.
An I-device is provided. The headrest device includes a headrest portion on which a subject's head is placed, and first and second height adjusting portions that vertically support the headrest portion and that adjust the height of the headrest portion. Have and.
The MRI soundproof / voice providing device is composed of a pair of MRI soundproof / voice providing devices. The MRI soundproofing / speech provider can take the above-described forms.

Preferably, the MRI apparatus is connected to the MRI main control means and is connected to the MRI main control means, and sends a sound to the voice transmitting means of the MRI voice providing apparatus in response to a command from the MRI main control means. And sound generating means.

More preferably, the sound generating means sends a sound related to MRI diagnosis to the voice transmitting means in response to a command from the MRI main control means.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION An MRI soundproof / voice providing device, an MRI soundproof / voice providing device and an MR using the same according to the present invention.
An embodiment of the I device will be described with reference to the accompanying drawings.

First Embodiment Referring to FIGS. 1 and 2, the MRI of the first embodiment of the present invention.
Soundproofing / voice providing device, MRI soundproofing / voice providing device and M
The RI device will be described. FIG. 1 (A) is a front view of an MRI soundproofing / sound providing device, an MRI soundproofing / sound providing device, and a headrest device according to a first embodiment of the present invention as viewed from the direction of the head of a subject sleeping on a bed. It is a figure. FIG. 1 (B) is shown in FIG.
(A) MRI soundproofing / voice provider, MR as seen from arrow A
It is a side view of an I soundproofing / sound provision device and a headrest device. FIG. 1C is a partially enlarged view of the MRI soundproofing / voice providing device. FIG. 1D is a diagram illustrating a method of connecting the moving operation unit, the fixed support unit, and the ear accommodation unit support unit to move the ear accommodation unit support unit with respect to the fixed support unit. Figure 2
(A), (B) is a plan view and a front view showing a state before the subject wears the MRI soundproofing / voice providing device,
2C and 2D are a plan view and a front view showing a state after the subject wears the MRI soundproofing / voice providing apparatus 10.

The MRI soundproof / voice providing device 10 is usually
It is composed of a pair of MRI soundproofing / speech providers 10a and 10b used for both ears of a subject to be diagnosed by the MRI apparatus. The MRI soundproof / voice providing devices 10a and 10b are substantially the same, and one of the MRI soundproof / voice providing devices 10a will be exemplified below, and the MRI soundproof / voice providing devices 10a and 10b will be exemplified.
b and the MRI soundproof / voice providing apparatus 10 will be described.

The MRI soundproofing / voice providing device 10a includes an ear housing portion 12, an ear housing portion support portion 16, a movement operation portion 18,
It has a sound transmission tube 20 and an earplug 22. Although the fixed support portion 26 is included in the MRI apparatus in this specification,
It is not included in the RI soundproofing / voice providing devices 10a and 10b. However, the fixed support portion 26 is replaced with the MRI soundproof / voice providing device 10.
May or may not be included.

The ear accommodating portion 12 comprises an ear enclosing portion 12a and an ear accommodating main body portion 12b, and the ear enclosing portion 12a is arranged so as to project to the peripheral edge of the ear accommodating main body portion 12b. The ear housing main body 12b is made of, for example, resin and is formed into a substantially flat shape or a slightly recessed shape. In addition, the ear housing body 12b may have a flat central portion and a protruding peripheral edge, as illustrated in FIG. As shown in FIG. 2 (A), when the ear housing body 12b has a protruding peripheral edge, the ear enclosure 12a can be thin. The recess 12r defined by the surface of the ear housing body 12b and the ear enclosure 12a that is provided so as to project from the periphery of the ear housing body 12b is formed to have a size that accommodates the ear of the subject. There is. When the ear surround portion 12a hits a portion around the ear of the subject pressed against the profile of the subject, the ear surrounding portion 12a conforms to the shape of the portion around the ear of the subject and is deformed, and the ear is recessed. 1
It is made of a deformable material that is completely contained within 2r. Furthermore, when the ear of the subject is housed in the recess 12r, the ear surrounding portion 12a does not allow the sound around the ear housing 12 to reach the subject's ear in the recess 12r. The material is made of a soundproof material so that no sound enters the recess 12r. As such a material, for example, a sponge with a high soundproofing effect and a material and a shape that are deformable and have a high soundproofing property such as a known earphone for listening to music are manufactured. There is. In the ear housing body 12b, at the center of the recess 12r,
A hole 12h is formed so as to penetrate the sound transmission tube 20. The ear surround 12a and the ear housing main body 12b are manufactured separately, but for example, a sponge ear surround 12a is fixed to the periphery of the resin ear housing main body 12b with an adhesive.

The ear housing support 16 is not indispensable for the MRI soundproofing / audio providing apparatus of the present invention, but the ear housing 12 is fixed to the fixed support 26 so that the ear housing 12 can be attached to the ear of the subject. It is provided so that it can be moved. The ear housing supporting portion 16 is made of, for example, the same resin as the ear housing main body 12b. The ear housing portion 12 and the ear housing portion support portion 16 are manufactured separately, but are integrally formed by bonding with an adhesive.

As shown in FIG. 1D, the ear housing supporting portion 16 has a first portion for allowing the sound transmission tube 20 to pass therethrough.
Hole 16b and second hole 16c, and screw hole 16
a is provided. Ear housing body 12 of ear housing 12
A hole 12h is provided in the central portion of the recess 12r of b. The first hole 16b of the ear housing support 16 is preferably formed at a position communicating with the hole 12h located in the recess 12r of the ear housing 12 in order to allow the sound transmission tube 20 to be taken in and out. Second hole 16 of ear housing support 16
The c is formed on the lower wall surface of the ear housing support 16 so as not to hinder the movement of the ear housing 12. First
The hole 16b and the second hole 16c communicate with each other. The sound transmission tube 20 is inserted into the hole 12h of the ear housing main body portion 12b and the first and second holes 16b and 16c of the ear housing portion support portion 16 in a loosely fitted state and freely inserted and removed. In this way, the sound transmission tube 20 is inserted in and out of the holes 12h, 16b, 16c so that the sound transmission tube 20 can be taken out of one of the ear housing portion 12 and the ear housing supporting portion 16. This is because it is possible to adjust the length of the sound transmission tube 20 exposed from the ear enclosing portion 12a of the ear housing 12 by taking it out to the outside of the other. In addition, the voice transmission tube 20 is provided with a hole 12h,
It is inserted in 16b and 16c in a loosely fitted state with a certain degree of airtightness so that external noise does not leak into the recess 12r of the ear housing 12 through these holes and the sound transmission tube 20. This is because

The recess 12 of the ear housing 12 of the voice transmission tube 20
An earplug 22 is detachably attached to the end portion where r is desired. The earplug 22 is made of a material that is deformable so that it can be inserted into the ear canal of the subject, for example, a sponge that is deformed by heat and pressure like a commonly used earplug. However, a hole into which the sound transmission tube 20 is inserted is formed in the center of the earplug 22. The earplug 22 is connected to the voice transmission tube 20.
This is because the earplugs 22 are detachably attached to each subject, so that the earplugs 22 can be exchanged and used for each subject, as in the case of the current diagnosis by the MRI apparatus. However, earplugs 2
If the 2 is not frequently replaced, the earplug 22 should be connected to the sound transmission tube 2
It is not necessary to make it removable with respect to 0, and it may be fixed at all times. In the present embodiment, the voice transmission tube 2
It is not intended to replace 0 with each patient.

The sound transmission tube 20 to which the earplug 22 is attached at its tip can be freely inserted into and removed from the second hole 16c, the first hole 16b, and the hole 12h provided on the lower wall surface of the ear housing support 16. Moreover, since the insertion is performed in a loosely fitted state, the subject pulls out the voice transmission tube 20 on the recess 12r side of the ear housing 12 by a length that is easy to operate and deforms the earplug 22 to deform the earplug 22. Insert it inside your ear. When the earplug 22 is inserted into one's own ear and the subject pulls the sound transmission tube 20 on the side of the second hole 16c of the ear housing support 16, the extra sound transmission tube 20 causes the extra sound transmission tube 20 to move. 12 does not remain in the recess 12r.

As illustrated in FIG. 1D, the screw hole 1 is axially provided on the side of the ear housing support 16 which is desired by the fixed support 26.
6a is formed. Fixed support portion 2 of movement operation portion 18
A screw 18a is provided on the side where 6 is desired. The fixed support portion 26 is provided with a through screw hole 26a. The moving operation part 18 is rotated to screw the screw 18a into the through screw hole 26a of the fixed support part 26, and the through screw hole 26a is further penetrated. Then, the fixed support part 26 is sandwiched between the moving operation part 18 and the opposite side. The screw 18a is screwed into the screw hole 16a of the ear accommodating portion support portion 16 at the innermost position. This allows the screw 1
8a is pivotally supported in the through screw hole 26a of the fixed support portion 26,
The ear operation part support part 16 is held by the movement operation part 18 via the fixed support part 26. Since the ear housing part 12 is connected to the ear housing part support part 16, the ear housing part 12 is held by the movement operation part 18 together with the ear housing part support part 16. Screw 1
8a is manufactured to have a sufficient length, and the through screw hole 26a
The length d is a length in which a gap d is formed between the fixed support portion 26 and the ear accommodation portion support portion 16 after penetrating through and reaching the innermost portion of the screw hole 16a. When the moving operation portion 18 is further rotated, for example, rightward with the screw 18a screwed in at the deepest portion of the screw hole 16a, the end surface of the ear housing portion support portion 16 on the screw hole 16a side is fixed to the fixed support portion 26. approach. On the contrary, the movement operation unit 18
Is rotated to the left, for example, the ear housing support 1
The end surface of 6 on the screw hole 16 a side is separated from the fixed support portion 26. In this way, by rotating the movement operation portion 18, the ear housing portion support portion 16 and the ear housing portion 12 can be moved toward or away from the fixed support portion 26. A pair of M
MRI is provided between the RI soundproof / voice providers 10a and 10b.
Since there is an ear on the face of the subject who is to be diagnosed by the device, by rotating the two movement operation units 18, the two ear housings 12 are separated from each other with respect to both ears of the subject. , Can be approached. That is, by rotating the pair of movement operation units 18 and 18, the distance between the pair of ear housing units 12 facing each other with the subject's face sandwiched therebetween is adjusted according to the size of the subject's face. be able to. in this way,
Moving operation part 18, fixed support part 26, ear housing part support part 16
Constitute the holding / moving means of the present invention.

The above-mentioned pair of MRI soundproofing / voice providing device 10
a, 10b, method of assembling the MRI soundproofing / sound providing device 10, moving operation part 18, fixed support part 26
A method of moving the ear housing 12 by the ear housing support 16 will be described. (1) The one in which the ear housing 12 and the ear housing support 16 are integrally formed has a through screw hole 2 inside the fixed support 26.
It is located near 6a. (2) The screw 18a of the movement operating portion 18 is fitted into the through screw hole 26a of the fixed support portion 26, and the screw 18a of the movement operating portion 18 is inserted until the screw 18a penetrates through the through screw hole 26a.
Rotate a. (3) When the subject further holds the ear accommodating portion 12 and the ear accommodating portion supporting portion 16 integrally formed with one hand and further rotates the movement operation portion 18, the penetration screw hole 26a is penetrated. The screw 18a is the screw hole 16a of the ear housing support 16
Screw into. Screw 1 until it abuts the bottom of the screw hole 16a.
Rotate 8a. When the rotation of the screw 18a is stopped, the moving operation unit 1 is moved by the screw 18a through the fixed support unit 26.
It shows that 8 and the ear housing support 16 are integrally assembled. Even when the screw 18a is in contact with the bottom of the screw hole 16a, the integrated body of the ear accommodating portion support 16 and the ear accommodating portion 12 is rotatable about the axis of the screw 18a.
The reason is that when the ear housing portion support portion 16 and the ear housing portion 12 rotate together with the rotation of the screw 18a, the direction of the recess 12r of the ear housing portion 12 changes, and the sound transmission tube 20 moves around the ear housing portion support portion 16. This is to prevent entanglement. The above operation is an assembling operation at the time of initial setting of the MRI apparatus.

The following operations are operations to be performed according to the subject at the time of normal diagnosis. (4) Between the inner surface of the fixed support portion 26 and the ear housing portion support portion 16, there is a gap d for moving the ear housing portion support portion 16 horizontally with the lower surface 28. As described above, the length of the screw 18 a is the same as the through screw hole 26 a of the fixed support portion 26.
Is a length that causes the maximum gap d in a state where the maximum clearance d is obtained in a state where the maximum clearance d is passed through and is screwed to the bottom of the screw hole 16a. (5) In this state, rotate the moving operation unit 18 to rotate the screw 18
When a is rotated, the screw 18a moves in the through screw hole 26a of the fixed support portion 26, so that the ear accommodation portion 12 and the ear accommodation portion support portion 16 can be moved in the horizontal direction. The amount of movement of one of the MRI soundproofing / voice providing device 10a or 10b is, for example, 0 to 5 cm.

Fixed supporting portions 26, 26 disposed so as to face each other.
The headrest device 30 is disposed between the two. The headrest device 30 supports the headrest portion 32 on which the subject's head is placed, and the first headrest portion 32 that supports the headrest portion 32 and is disposed on the lower surface 28 to adjust the height of the headrest portion 32.
The height adjusting unit 34 and the second height adjusting unit 36. First height adjusting unit 34 and second height adjusting unit 36
As illustrated in FIG. 1B, a screw hole 28a into which the screw 34a of the first height adjusting portion 34 and the screw 36a of the second height adjusting portion 36 are screwed is inserted in the lower surface 28 where ,
28b is provided. The first height adjusting portion 34 and the second height adjusting portion 36 adjust the height and the inclination of the headrest portion 32 by rotating the screws 34a and 36a provided on the shaft portions thereof. be able to. First height adjusting unit 34 and second height adjusting unit 36
The height adjustable range of is, for example, 0 to 5 cm.

Hereinafter, a pair of MRI soundproofing / voice providing device 10
A method of operating the MRI soundproofing / audio providing apparatus 10 and the headrest apparatus 30 including a and 10b will be described. (A) As illustrated in FIGS. 2A and 2B, a pair of M
The RI soundproofing / sound providing device 10 has a pair of fixed supporting portions 26, 26 arranged opposite to each other, and an integral body of the ear housing supporting portion 16 and the ear housing 12 is fixed by the moving operation portion 18. In this case, the head of the subject is placed on the headrest portion 32 so that it is easy to insert the face of the subject between the pair of ear accommodating portions 12 and 12 so that the two moving operation units 1 can be easily inserted.
The screws 18a and 18a of Nos. 8 and 18 widen the gap between the ear housings 12 and 12 of the pair of MRI soundproofing / audio providing devices 10a and 10b. (B) Next, the heights of the first height adjusting portion 34 and the second height adjusting portion 36 of the headrest device 30 are adjusted to adjust the height and inclination of the headrest portion 32, and the ears facing each other. Adjustments are made to match the positions of the accommodating portions 12, 12 in the height direction. (C) The subject undergoing MRI diagnosis is headrest part 32
Put your head on top of. At this time, the ear housings 12 and 12 of the pair of MRI soundproofing / voice providing devices 10a and 10b are sufficiently spaced from the face of the subject. (D) The subject grasps the earplug 22 by hand, deforms the sponge earplug 22 by heat and pressure, and inserts it into his or her ear. When the earplug 22 is picked, the sound transmission tube 20 has a hole 12h,
Since it is inserted in the first hole 16b and the second hole 16c in a loosely fitted state and is expandable and contractible, the recess 12 of the ear accommodating portion 12 is formed.
Since it extends from r, the earplug 22 deformed with the sound transmission tube 20 loosened can be easily inserted into the ear.

(F) As illustrated in FIGS. 2 (C) and 2 (D), after the earplugs 22 are inserted into both ears, the operator of the MRI apparatus or the subject himself / herself moves the movement operation unit 18 , 18 are respectively rotated so that the ear surrounding portion 12a abuts around the ear of the subject, and the ear surrounding portion 12a is further deformed so that external sound does not enter the concave portion 12r. The surrounding portions 12a and 12a are brought close to each other. It should be noted that the rotation operation of one movement operation unit 18 may be performed and the rotation operation of the other movement operation unit 18 may be sequentially repeated.
The 8 and 18 may be rotated simultaneously. (G) As described above, both ears of the subject are located in the recess 12r, and moreover, the ears are sufficiently housed in the recess 12r to block external sound. Moreover, since the earplug 22 is properly inserted into the ear of the subject, and the sound transmission tube 20 is in a state of being freely inserted and taken out, the earplug 22 can be moved if the subject slightly moves his or her face. Does not fall out of your ears or come loose. (H) If the sound transmission tube 20 that has been pulled out when the earplug 22 is inserted into the ear protrudes from the recess 12r, pull the sound transmission tube 20 on the side of the first hole 16b of the ear housing support 16 slightly. The sound transmission tube 20 slackened in the recess 12r is pulled out from the first hole 16b, and the sound transmission tube 20 is not loosened.

(I) In this state, diagnosis is performed by the MRI apparatus. Since both ears of the subject are accommodated in the recess 12r in a sufficiently soundproof state, even if there is a high noise due to the operating noise of the gradient coil of the MRI apparatus, for example, the subject's ears are sufficiently soundproofed. I don't mind the noise. For example, it has been found that when the MRI soundproofing / audio providing apparatus 10 according to the present embodiment is used, noise of about 100 to 120 dB around the ear housing 12 is reduced to about 50 to 60 dB in the recess 12r. Further, since the earplug 22 reduces the noise to the ear, the noise actually felt by the subject can be further reduced.

In such a state, when the operator of the MRI apparatus gives a voice explanation of the condition of diagnosis, a diagnosis instruction, etc. through the voice transmission tube 20, the subject can fully hear.

When the diagnosis by the MRI apparatus is completed, M
The operator of the RI apparatus rotates the moving operation sections 18, 18 to move the ear housing sections 12, 12 to the fixed support section 26 side. As a result, the space between the opposed ear housings 12, 12 is widened, and the ear housings 12, 12 are separated from the face of the subject.
The subject pulls out the earplugs 22 from the ears to remove the headrest portion 3
You can stand up from 2 and get up.

MRI soundproofing / voice providing device and M of the present invention
In the first embodiment of the RI soundproofing / voice providing device,
Since the height and inclination of the headrest portion 32 of the headrest device 30 are adjusted according to the head of the subject, and the MRI soundproof / voice providers 10a and 10b are adjusted and used as described above, the MRI soundproofing is performed.・ Voice providers 10a, 10b
Can be adjusted easily and accurately. Unlike the head fixing belt 200, the headrest device 30 does not completely fix the head of the subject, so that stress such as a feeling of oppression of the subject can be reduced.

The above-described embodiment is configured to be widely applicable to various subjects. However, for example, since the subjects have a large difference in adjustment range between adults and children, for example It is desirable that the person is divided into an adult and a child, and the installation intervals of the fixed support portions 26, 26 facing each other, the movement range by the movement operation portion 18, the height of the headrest portion 32, and the tilt adjustment range are different.

Second Embodiment With reference to FIGS. 3A to 3D, an MRI soundproofing / voice providing apparatus and an MRI apparatus according to a second embodiment of the present invention will be described. The headrest device 30 is the same as that of the first embodiment. MRI soundproofing / voice providing device 10a of the second embodiment
In the a, 10bb and the MRI soundproof / voice providing device 10A, an example using the shaft 17 and the spring 19 is shown as a main element of the holding / moving means of the present invention. Ear housing support 16
Although the shaft 17 can be directly connected to the ear housing 12 by omitting it, in the present embodiment, the ear housing supporting portion 16 is provided.
Describes the case that exists. The ear surrounding portion 12a and the ear housing body portion 12b of the ear housing portion 12 have the shapes illustrated in FIG. 2A, that is, the ear housing body portion 12b.
An example in which the peripheral edge of the ear is high and the thin ear envelope 12a is provided on the peripheral edge is shown.

The shaft 17 is screwed and fixed to the ear accommodating portion supporting portion 16, for example, as illustrated in FIG. 3 (D),
A screw hole 17a into which a screw 18a of the movement operation portion 18 is screwed
Is provided. Therefore, it is not necessary to provide the screw hole 16a illustrated in FIG. In the second embodiment, the through hole 26b formed in the fixed support portion 26 does not need to be a screw hole like the through screw hole 26a described above, but is a hole 26b through which the screw 18a penetrates. Therefore, referring to the screw 18a, the hole 2
6b only passes, so the root need not be a screw. The spring 19 is arranged around the shaft 17 in FIG.
As illustrated in (A), the fixed support portion 26 and the ear housing portion support portion 16 are arranged in a state in which the fixed support portion 26 and the ear housing portion support portion 16 are in contact with each other and are prevented from extending therebetween. It compresses or expands between the part support part 16. The other components are the same as those in the first embodiment.

A method of assembling the MRI soundproofing / voice providing devices 10aa and 10bb and the MRI soundproofing / voice providing apparatus 10A and a method of moving the ear housing 12 of the second embodiment will be described. (A) The ear housing 12 and the ear housing support 16 are integrally formed as a through hole 26 b inside the fixed support 26.
Located near the. (B) The screw 18a of the movement operation part 18 is passed through the through hole 26b of the fixed support part 26. (C) The screw 18 penetrating the through hole 26b by rotating the movement operation part 18 while holding the ear housing part 12, the ear housing part support part 16 and the shaft 17 integrally formed with one hand.
A is screwed into the screw hole 17a of the shaft 17. Screw hole 17a
The screw 18a is rotated until it abuts the bottom of the. Screw 18
When the rotation of a is stopped, the fixed support portion 26, the screw 18
It shows that the moving operation portion 18 and the ear housing portion support portion 16 are integrally assembled via a and the screw hole 17a.
In this case, there is a sufficient distance between the fixed support portion 26 and the ear housing portion support portion 16, the spring 19 is in a naturally expanded state in which it is not compressed, and the MRI soundproofing / voice providing device 10a facing the MRI soundproofing / voice providing device 10a
The distance between the ear housings 12 and 12 of a and 10bb is narrower than the width of the head of the subject. (D) With the assistance of the operator of the MRI apparatus, the subject opens the opposing ear housings 12, 12 against the spring force of the spring 19 and heads between the opposing ear housings 12, 12. Fit the part. At this time, the earplugs 22 and the sound transmission tube 20 are sufficiently pulled out. (E) The subject is one of the MRI soundproofing / voice providing device 10a
A is separated from the face by hand, the earplug 22 is picked up by hand, the sponge earplug 22 is deformed by heat and pressure, and the earplug 22 is inserted into one's own ear. When the earplug 22 is picked up, the sound transmission tube 20 is inserted into the hole 12h of the ear housing body 12b, the first hole 16b and the second hole 16c of the ear housing support 16 in a loosely fit state and is expandable. Therefore, since it easily extends from the recess 12r, the deformed earplug 22 can be inserted into the ear while the sound transmission tube 20 is loosened. After inserting the earplug 22 into the ear, while pulling out the audio transmission tube 20 from the second hole 16c side of the ear housing supporting portion 16, the MRI soundproofing / audio providing device 1
Release 0aa from your hand. (F) The above operation is also performed for the other MRI soundproofing / voice providing device 10bb. (G) A pair of MRI soundproofing / speech providers 10aa, 10b
In b, the spring force of the springs 19 and 19 presses the ear enclosures 12a and 12a of the pair of ear housings 12 and 12 around the patient's ears. As a result, the flexible and soundproof ear surround 12a is prevented from being deformed and external sound is prevented from entering the recess 12r into which the ear is inserted. As described above, both ears of the patient are located in the recesses 12r and 12r, and are sufficiently accommodated in the recesses 12r and 12r to block external sound. Moreover, the earplug 22 is properly inserted into the ear of the subject. (H) In this state, diagnosis is performed by the MRI apparatus.

Similar to the first embodiment, when the MRI soundproofing / voice providing devices 10aa and 10bb of the second embodiment are used, both ears of the subject are accommodated in the recesses 12r and 12r in a sufficiently soundproof state. Therefore, even if there is a high noise due to the operating noise of the gradient coil of the MRI apparatus, the noise is sufficiently prevented and the noise is not a concern. For example, the second
MRI soundproofing / voice providing devices 10aa and 10b according to the embodiment
When b (MRI soundproofing / voice providing apparatus 10A) was used, the same noise reduction effect as in the first embodiment was obtained. further,
Since the earplug 22 reduces the noise to the ear, the noise to the subject can be further reduced.

In this state, as in the first embodiment, when the operator of the MRI apparatus gives a voice explanation to the subject through the voice transmission tube 20 and gives a diagnosis instruction to the subject. , The subject was able to hear enough.

When the diagnosis by the MRI apparatus is completed,
The examinee has two MRI soundproofing / voice providing devices 10aa, 10
The head is pulled out from the MRI soundproofing / voice providing devices 10aa, 10bb with the distance between the ear housings 12, 12 opposed to each other against the spring force of the springs 19, 19 widened. At this time, the sound transmission tube 20 also extends with the earplugs 22 and 22 attached to the ears. Then, the earplugs 22, 22 are taken out from the ears.

The spring force of the springs 19 and 19 is, as described above, due to the spring force, the ear enclosing portion 12 of the ear housings 12 and 12.
a and 12a are deformed to be closely attached to the periphery of the patient's ear without causing an unpleasant feeling to the subject to enhance the soundproofing effect, while facing the ear surrounds 12a before and after the diagnosis by the MRI apparatus, 12a is set to a value that makes it easy to widen.

Third Embodiment FIG. 4 illustrates an embodiment of the MRI apparatus of the present invention. The MRI apparatus 60 of the present embodiment has the MRI main control means 40, the sound generation means 50, and the MRI soundproofing / voice providing apparatus 10 or 10A of the above-described first or second embodiment. The MRI main control unit 40 is a device that controls the entire MRI apparatus, and operates according to the management and instructions of the operator. The sound generation means 50 generates a sound according to the command from the MRI main control means 40 and sends it to the voice transmission tube 20 of the first or second embodiment, and the earplug 22 is put on. A sound signal corresponding to a command from the MRI main control means 40 can be sent to the examiner. Therefore, MR
The subject who has been diagnosed by the I-device can listen to the sound emitted from the sound generating means 50. Also, MRI soundproofing
In addition to the sound from the sound generating means 50, a sound from the operator of the MRI apparatus 60 may be sent to the sound transmitting tube 20 of the sound providing apparatus 10 or 10A to convey the diagnosis status.

The sound is generated by the sound generating means 50 based on the command of the MRI main control means 40. For example, the sound is generated so as to stabilize the spirit of the subject being diagnosed, and the sound is generated according to the brain diagnosis. Is generated. MRI soundproofing / voice providing devices 10a, 10 according to the first and second embodiments of the present invention.
By using b: 10aa and 10bb, the noise can be greatly reduced for the subject, and the above-mentioned sound is transmitted from the voice transmission tube 20 to the earplug 22 that is sufficiently inserted in the subject's ear. Since it can be sent, it is possible to provide a sound that is less affected by noise.

MRI soundproofing / voice providing apparatus, MRI of the present invention
The implementation of the soundproofing / voice providing apparatus and the MRI apparatus is not limited to the above-described exemplary embodiments. For example, the materials that make up the MRI soundproofing / voice provider are
The material is not limited to the above as long as it is non-magnetic. For example, the moving operation unit 18, the fixed support unit 26, the ear housing unit support unit 16, the ear housing body 12b, and the like are not limited to resin, and may be made of aluminum. Other than the above-mentioned sponge and headphones, the ear surround 12a can be made of various other materials, materials that are deformable, have a restoring force, and have a high soundproof effect. Of course, earplugs 2
Various materials can also be used for the material of 2.

In the above-mentioned embodiment, the subject lying on the bed is described. However, since the MRI diagnosis can be performed while sitting on a chair, the MRI diagnosis can be performed while sitting on such a chair. The present invention can also be applied to a subject. Therefore, when a subject is referred to in the present invention,
It is meant to include both the subject sleeping on the bed and the subject sitting on the chair.

[0052]

According to the present invention, an MRI soundproofing / voice providing device which has a high soundproofing effect, is easy to adjust and is easy to operate, and M
An RI soundproofing / voice providing device can be provided.

Further, according to the present invention, it is possible to provide an MRI apparatus which can provide an appropriate sound to a subject without noise by using the MRI soundproofing / voice providing device and the MRI soundproofing / voice providing apparatus.

[Brief description of drawings]

1A to 1D are diagrams illustrating a first embodiment of an MRI soundproofing / voice providing apparatus, an MRI soundproofing / voice providing apparatus, and an MRI apparatus according to the present invention, and FIG. ) Is the MRI soundproofing / voice providing device, MR of the first embodiment of the present invention.
FIG. 1B is a front view of the soundproofing / voice providing device and the headrest device as seen from the direction of the patient's head, and FIG.
(A) MRI soundproofing / voice provider, MR as seen from arrow A
I is a side view of the soundproofing / voice providing device and the headrest device, FIG. 1 (C) is a partially enlarged view of the MRI soundproofing / voice providing device, and FIG. 1 (D) is a moving operation part and a fixed support part. It is the figure which illustrated the method of connecting with an ear accommodation part support part, and moving an ear accommodation part support part with respect to a fixed support part.

2A to 2D are diagrams illustrating a method of using the MRI soundproofing / voice providing device and the MRI soundproofing / voice providing device illustrated in FIG. 1, and FIGS. ) Is a plan view and a front view showing a state before the patient wears the MRI soundproofing / voice providing device, and FIGS. 2C and 2D show a state after the patient wears the MRI soundproofing / voice providing device. It is the top view and front view which show a state.

3 (A) to 3 (D) are diagrams illustrating a second embodiment of the MRI soundproofing / voice providing device, the MRI soundproofing / voice providing device, and the MRI device of the present invention, and FIG. ) Is the MRI soundproofing / voice providing device, MR of the second embodiment of the present invention.
FIG. 3B is a front view of the soundproofing / voice providing device and the headrest device as viewed from the direction of the patient's head, and FIG.
FIG. 3 (C) is a side view of the MRI soundproofing / voice providing device and the headrest device as seen from the arrow A in FIG.
FIG. 3D is a partially enlarged view of the soundproofing / voice providing device, and FIG.
It is a figure which shows the state which couple | bonds a RI soundproofing and a sound provider.

FIG. 4 is a configuration diagram of a first embodiment of the MRI apparatus of the present invention.

5 (A) to (D) are diagrams illustrating a conventional MRI soundproofing / voice providing apparatus and its usage pattern.

[Explanation of symbols]

10, 10A ··· MRI soundproofing / voice providing device 10a, 10b: 10aa, 10bb ··· MRI soundproofing ·
Voice provider 12, ear housing 12a, ear enclosure 12b, ear housing main body 12h, hole 16, ear housing support, 16a, screw hole 17, shaft 17a, screw hole 18 ・ ・ Movement operation part, 18a ・ ・ Screw 19 ・ ・ Spring 20 ・ ・ Voice transmission tube 22 ・ ・ Earplugs 26 ・ ・ Fixed support part 30 ・ ・ Headrest device 32 ・ ・ Headrest part 34 ・ ・ First height Adjustment unit 36. second height adjustment unit 40 .. MRI main control unit 50 .. sound generation unit 60 .. MRI device

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Naoki Hirata             127, 4-7 Asahigaoka, Hino City, Tokyo             GE Yokogawa Medical System Co., Ltd.             Within F-term (reference) 4C096 AA18 AB46 AB47 AD19 AD23                       FC10 FC20

Claims (15)

[Claims] 1. An ear accommodating main body portion, and an ear surrounding portion made of a deformable and soundproof material, which is disposed so as to project on a peripheral edge of one surface of the ear accommodating main body portion, Ear accommodating means for accommodating the ear of a subject sleeping on a bed or a subject sitting on a chair in a recess formed by the protruding ear surrounding portion and the surface of the ear housing body. An audio transmitting unit disposed through a hole formed in the ear housing main body of the ear housing unit, and a holding unit holding the ear housing unit for holding the MRI soundproofing / audio providing device. An MRI soundproofing / voice providing device comprising a holding / moving means for moving the holding means so as to move away from the holding means or approach the holding means. 2. The MRI soundproofing / voice providing device according to claim 1, further comprising an earplug detachably attached to a tip of the voice transmitting means on the ear containing body side of the ear containing means. 3. The ear enclosing portion, which is formed of a deformable and soundproof material and is disposed so as to project on the peripheral edge of one surface of the ear accommodating main body portion of the ear accommodating means, holds and moves. When pressed to the vicinity of the ear of the patient to be diagnosed by the MRI apparatus by the means, the bed is deformed according to the shape around the ear of the subject sleeping on the bed or the subject sitting on the chair. The ear of the subject sleeping on the chair or the subject sitting on the chair is housed in the recess, and sound is prevented from entering the recess from the outside of the ear housing means. The MRI soundproofing / voice providing device according to claim 1 or 2. 4. The MRI soundproofing / audio providing device further comprises an ear housing part supporting portion provided on the ear housing body side of the ear housing means, and the ear housing part supporting portion comprises the ear housing means. A first hole communicating with the hole formed in the ear housing body and a second hole for pulling out the sound transmitting means to the outside of the ear housing supporting portion, wherein the sound transmitting means is It is introduced from the second hole of the ear housing supporting section and introduced into the ear housing supporting section, and is formed in the first hole of the ear housing supporting section and the ear housing body of the ear housing. The MRI soundproofing / voice providing device according to claim 3, wherein the MRI soundproofing / voice providing device is provided so as to penetrate the hole and be loosely fitted. 5. The holding means is a fixed support portion arranged upright on a head mounting portion of the MRI apparatus, and the holding / moving means includes a movement operating portion having a screw at a tip thereof. A screw hole that is axially provided in the ear accommodating portion support portion and receives a screw of the movement operation portion; and a screw provided in the movement operation portion is screwed into and penetrates the fixed support portion. And a through screw hole, and by rotating the movement operating part, the screw of the movement operating part is screwed into the through screw hole formed in the fixed support part to penetrate the through screw hole, The ear accommodating part support part for holding the ear accommodating means by screwing into a screw hole of the ear accommodating part support part placed at a position facing the moving operation part with the fixed support part interposed therebetween and the moving operation. Part of the moving operation part is connected via the fixed support part. In response, the fixed distance between the support portion and the ear accommodating portion supporting portion may change, MRI soundproofing and sound provider of claim 4, wherein. 6. The holding means is a fixed support portion arranged upright on a head mounting portion of the MRI apparatus, and the holding / moving means includes a movement operation portion having a screw at a tip thereof. A shaft provided with a screw hole for receiving a screw of the moving operation part, connected to an end of the ear housing supporting part, a spring arranged around the shaft, and the moving part to the fixed supporting part. And a through-screw hole formed so that a screw provided in the operation portion can be screwed into and penetrated, and the screw of the movement operation portion is formed in the fixed support portion by rotating the movement operation portion. The screw is inserted into the through screw hole, the through screw hole is further penetrated, and the screw is inserted into the screw hole of the shaft placed at a position facing the movement operation unit with the fixed support portion interposed therebetween, and the ear The fixed support is provided between the ear accommodating portion support portion holding the accommodating means and the movement operation portion. A portion that is coupled via the shaft and the shaft, and that is located around the shaft and between the fixed support part and the ear housing part support part is in the direction from the ear housing means to the fixed support part. Contracts when a pressure is applied to it and expands in a free state where no pressure is applied,
The MRI soundproofing / audio providing device according to claim 4, wherein a distance between the fixed support portion and the ear housing portion support portion is changed. 7. A pair of the fixed support portions are provided at a predetermined interval, and each of the pair of MRI soundproofing / speech providers is provided with the one pair.
The MRI soundproofing / voice providing apparatus according to claim 4, which is held by each of the pair of fixed supporting portions. 8. A headrest device, and an MR in the vicinity of a position where the headrest device is disposed.
A pair of fixed support means arranged on the head mounting portion of the apparatus I at a predetermined interval, and a pair of MRI provided corresponding to the pair of fixed support portions.
An MRI soundproof / voice providing device having a soundproof / voice providing means, wherein the headrest device mounts a headrest of a subject sleeping on a bed or a subject sitting on a chair. A headrest portion in a vertical direction, and a first height adjusting portion and a second height adjusting portion for adjusting the height of the headrest portion. The sound providing means has an ear housing body, and an ear enclosure made of a deformable and soundproof material that is arranged so as to project on the peripheral edge of one surface of the ear housing body. The recess formed by the surface of the ear housing portion projectingly arranged and the ear housing body is MR
Ear accommodation means capable of accommodating an ear of a subject sleeping on the bed of the apparatus I or a subject sitting on a chair, and an ear accommodation for supporting the ear accommodation body of the ear accommodation means Section support part, voice transmitting means arranged through a hole formed in the ear housing body of the ear housing means, and the fixing for holding the ear housing means to the MRI soundproofing / sound providing device. An MRI apparatus comprising: a holding / moving unit that moves the fixed supporting unit to move away from the fixed supporting unit or approach the fixed supporting unit while being held by the supporting unit. 9. The MRI apparatus according to claim 8, further comprising an earplug detachably attached to a tip of the sound transmitting means on the side of the ear housing main body side of the ear housing means. 10. An ear enclosure part made of a deformable and soundproof material, which is disposed so as to project from the peripheral edge of one surface of the ear housing body of the ear housing means, is provided with the holding / moving means. When pressed near the ear of the patient to be diagnosed by the MRI apparatus by the above, the ear of the patient is deformed according to the shape around the ear of the patient to accommodate the ear of the patient in the recess, and the outside of the ear accommodation means. The MRI apparatus according to claim 8 or 9, wherein the MRI apparatus is configured to prevent sound from entering the concave portion. 11. The MRI soundproofing / sound providing means further has an ear housing part supporting portion provided on the ear housing body side of the ear housing means, and the ear housing part supporting portion comprises the ear housing means. A first hole communicating with the hole formed in the ear housing body and a second hole for pulling out the sound transmitting means to the outside of the ear housing supporting portion, wherein the sound transmitting means is It is introduced from the second hole of the ear housing supporting section and introduced into the ear housing supporting section, and is formed in the first hole of the ear housing supporting section and the ear housing body of the ear housing. The MRI apparatus according to claim 10, wherein the MRI apparatus is provided so as to penetrate the hole and be loosely fitted. 12. The holding / moving means includes a movement operating portion having a screw at a tip thereof, a screw hole provided in the ear accommodating portion support portion in an axial direction, and receiving a screw of the movement operating portion, And a through-screw hole formed so that a screw provided in the movement operation portion is screwed into and penetrated through the fixed support portion, and the movement operation portion is rotated to fix the screw of the movement operation portion. A screw hole of the ear accommodating part support part that is screwed into a through screw hole formed in the support part to penetrate the through screw hole and is located at a position facing the movement operation part with the fixed support part interposed therebetween. The ear housing portion support portion holding the ear housing means and the movement operation portion are coupled to each other via the fixed support portion, and the fixed support portion is rotated according to the rotation of the movement operation portion. The distance between the ear and the accommodating portion support portion can be changed. 1 MRI device as claimed. 13. The holding / moving means is provided with a moving operation portion having a screw at a tip thereof, and a screw hole connected to an end portion of the ear accommodating portion supporting portion and receiving a screw of the moving operation portion. A shaft, a spring arranged around the shaft, and a through-screw hole formed so that the screw provided in the movement operation part is screwed into and penetrates the fixed support part, By rotating the movement operation part, the screw of the movement operation part is screwed into the through screw hole formed in the fixed support part, further penetrates the through screw hole, and the movement is performed with the fixed support part sandwiched therebetween. The ear accommodating part support part that holds the ear accommodating part by screwing into the screw hole of the shaft placed at a position facing the operation part, and the moving operation part, via the fixed support part and the shaft. Around the shaft and between the fixed support and the earpiece. The spring is located between the parts supporting portion, the fixed pressing in the direction towards the supporting portion is contracted when it is applied, and extends in a free state not applied pressed from the ear accommodating means,
The MRI apparatus according to claim 11, wherein a distance between the fixed support section and the ear housing section support section is changed. 14. An MRI main control means, and a sound generation means which is connected to the MRI main control means and sends a sound to the voice transmission means of the MRI soundproof / voice providing device in response to a command from the MRI main control means. The MRI apparatus according to any one of claims 8 to 13, further comprising: 15. The MRI apparatus according to claim 14, wherein the sound generation means sends a sound related to MRI diagnosis to the voice transmission means in response to a command from the MRI main control means.