Sound insulation earmuff for nuclear magnetic resonance detection

Abstract

The utility model discloses a sound insulation earmuff for nuclear magnetic resonance detection, which comprises a head-mounted part and earmuff parts arranged at two ends of the head-mounted part, each earmuff part comprises a fixing block fixedly connected with the two ends of the head wearing part, an earmuff body arranged on the side, close to the head, of the fixing block, and a rear cover arranged on the side, away from the head, of the fixing block. The first adjusting assembly is arranged between the earmuff body and the fixing block and used for adjusting the distance between the earmuff body and the fixing block; and the second adjusting assembly is arranged between the rear cover and the fixing block and used for adjusting the distance between the rear cover and the fixing block. The distance between the earmuff bodies at the two ends can be adjusted through the first adjusting assembly and the second adjusting assembly, and therefore adjustment can be conducted according to the sizes of the heads of different patients, and the fixing frame can effectively fix the heads of the patients during nuclear magnetic resonance examination.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a soundproof earmuff for nuclear magnetic resonance detection. Background Art

[0002] Magnetic resonance imaging is the latest new medical imaging technology that uses the principle of nuclear magnetic resonance. It has excellent diagnostic capabilities for solid organs such as the brain, thyroid, liver, gallbladder, spleen, kidney, pancreas, adrenal glands, uterus, ovaries, prostate, as well as the heart and large blood vessels. Magnetic resonance imaging has become one of the routine examinations, and more and more patients need to undergo MRI examinations. When doing a head MRI examination, the head posture must be kept unchanged for a period of time. If there is any change, the image scanned by the MRI machine will cause inaccurate detection, resulting in wrong judgment by the doctor, which is not conducive to the treatment of the patient; therefore, the position of the patient's head needs to be constrained during the examination. In addition, the MRI equipment will generate a lot of noise during operation, which has a great impact on patients entering the MRI equipment. Therefore, patients will be provided with soundproof earmuffs before the examination to reduce the impact of noise. However, some hospitals are still using old-style MRI machines whose head restraint is a rectangular frame with a fixed structure. In order to accommodate patients with different head sizes, the rectangular frame is designed to be larger. For patients with larger heads, the rectangular frame can have a better restraining effect, but for patients with smaller heads, there will be a large gap after entering the rectangular frame, and the restraining effect is not good. Therefore, in order to cooperate with the rectangular frame of the old-style MRI machine to better restrain patients with different head sizes, we proposed a pair of soundproof earmuffs for MRI detection. Utility Model Content

[0003] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a soundproof earmuff for nuclear magnetic resonance detection, which can adjust the distance between the earmuff and the rectangular frame according to the size of the patient's head so as to restrain the patient's head.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is: it includes a head-mounted part and an earmuff part arranged at both ends of the head-mounted part, the earmuff part includes a fixing block connected to the two ends of the head-mounted part, an earmuff body arranged on the side of the fixing block close to the head, and a back cover arranged on the side of the fixing block away from the head, the earmuff part also includes a first adjustment component arranged between the earmuff body and the fixing block for adjusting the distance between the earmuff body and the fixing block, and a second adjustment component arranged between the back cover and the fixing block for adjusting the distance between the back cover and the fixing block.

[0005] Furthermore, the first adjustment component includes a first rotating cylinder rotatably connected to the fixing block on a side close to the earmuff body, and the earmuff body is threadedly connected in the first rotating cylinder.

[0006] Furthermore, the fixing block is provided with a first truncated cone on one side close to the earmuff body, a first annular groove is formed on one side of the first truncated cone close to the fixing block, and a first clamping ring sleeved in the first annular groove is provided on the inner side of the first rotating cylinder;

[0007] The inner wall of the first rotating cylinder has a first internal thread, the outer wall of the earmuff body close to the first rotating cylinder has a first external thread matched with the first internal thread, and the earmuff body and the first rotating cylinder are threadedly connected through the first internal thread and the first external thread.

[0008] Furthermore, a first prism is provided on one side of the fixing block close to the earmuff body, and a first prism groove for inserting the first prism is provided on one end of the earmuff body close to the fixing block.

[0009] Furthermore, the second adjustment assembly includes a second rotating cylinder rotatably connected to the fixed block on a side close to the rear cover, and the rear cover is threadedly connected in the second rotating cylinder.

[0010] Furthermore, a second truncated cone is provided on a side of the fixed block close to the rear cover, a second annular groove is formed on a side of the second truncated cone close to the fixed block, and a second clamping ring sleeved in the second annular groove is provided on the inner side of the second rotating cylinder;

[0011] The inner wall of the second rotating cylinder has a second internal thread, the outer wall of the rear cover close to the second rotating cylinder has a second external thread matched with the second internal thread, and the rear cover is threadedly connected to the second rotating cylinder through the second internal thread and the second external thread.

[0012] Furthermore, a second prism is provided on one side of the fixing block close to the rear cover, and a second prism groove for inserting the second prism is provided on one end of the rear cover close to the fixing block.

[0013] Furthermore, the inner wall of the earmuff body is provided with a mounting tube, and an earplug is slidably connected in the mounting tube.

[0014] Furthermore, a spring is arranged in the installation tube, and the spring is located on a side of the earplug close to the fixing block.

[0015] Furthermore, an anti-collision cover is provided on the top of the head-mounted part.

[0016] The utility model provides a soundproof earmuff for nuclear magnetic resonance detection. When a patient needs to undergo nuclear magnetic resonance detection, the earmuff is first worn on the head through a head-mounted part. The distance between the earmuff body and the fixing block can be adjusted by rotating a first rotating cylinder, thereby adjusting the distance between the two earmuff bodies. The distance between the back cover and the fixing block can be adjusted by rotating a second rotating cylinder. Therefore, when the patient puts the head into a rectangular frame in a nuclear magnetic resonance head fixing device, the distance between the earmuff bodies on both sides can be adjusted according to the size of the head, so that the two sides of the earmuff part are tightly against the two side walls of the rectangular frame, thereby not only being able to fix the heads of different patients, but also having a soundproofing effect, and being convenient for performing nuclear magnetic resonance detection on the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0018] Figure 2 It is a side structural schematic diagram of an embodiment of the utility model.

[0019] Figure 3 It is a schematic diagram of the explosion structure of one embodiment of the utility model.

[0020] Figure 4 This is an embodiment of the utility model Figure 3 A magnified schematic diagram of center A.

[0021] Figure 5 This is an embodiment of the utility model Figure 3 A magnified schematic diagram of point B in the middle.

[0022] The meanings of the symbols in the accompanying drawings are:

[0023] Head-mounted part 1; anti-collision cover 11; connecting hole 12; earmuff part 2; fixing block 21; first cone 212; first annular groove 2121; first prism 213; second cone 214; second annular groove 2141; second prism 215; earmuff body 22; first external thread 221; first prism groove 222; back cover 23; second external thread 231; second prism groove 232; first adjustment component 3; first rotating cylinder 31; first retaining ring 311; first internal thread 312; second adjustment component 4; second rotating cylinder 41; second retaining ring 411; second internal thread 412; connecting rod 5; mounting cylinder 6; earplug 61; spring 62. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings:

[0025] See also Figure 1 and Figure 2The utility model discloses a soundproof earmuff for nuclear magnetic resonance detection, comprising a head-mounted part 1 and earmuff parts 2 arranged at both ends of the head-mounted part 1, the earmuff parts 2 comprising fixing blocks 21 fixedly connected to both ends of the head-mounted part 1, an earmuff body 22 arranged at a side of the fixing block 21 close to the head, a back cover 23 arranged at a side of the fixing block 21 away from the head, a first adjusting component 3 arranged between the earmuff body 22 and the fixing block 21 for adjusting the distance between the earmuff body 22 and the fixing block 21, and a second adjusting component 4 arranged between the back cover 23 and the fixing block 21 for adjusting the distance between the back cover 23 and the fixing block 21. When the patient puts on the earmuffs and puts the head into the rectangular frame of the MRI head fixing device, if the patient's head is too small and the earmuffs are not completely in contact with the two inner sides of the rectangular frame, the distance between the earmuff bodies 22 on both sides can be adjusted by the first adjustment component 3, and at the same time, the spacing between the back covers 23 on both sides can be adjusted by the second adjustment component 4 so that the back covers 23 on both sides are tightly in contact with the inner wall of the head fixing frame, so that the heads of patients with different head sizes can be fixed. It can also achieve the effect of sound insulation, making it easier to perform MRI examinations on patients. It should be noted that since metal will interfere with the examination during MRI examinations, in this embodiment, all structures are made of non-metallic materials.

[0026] Please continue to see Figure 3 When in use, the earmuffs are first worn on the head through the head-mounted part 1. An anti-collision cover 11 is provided on the top of the head-mounted part 1. The anti-collision cover 11 can protect the head from impact when in use. In order to facilitate the adjustment of the angle of the fixing block 21 so that it can better fit the patient's ears, connection holes 12 are provided at both ends of the head-mounted part 1, and perforations corresponding to the connection holes are provided in the fixing block 21 (not shown in the figure). The fixing block 2 is vertically installed at both ends of the head-mounted part 1 through the connecting rod 5. The angle of the fixing block 2 can be freely rotated during use, thereby adjusting the angle of the earmuff body 22 to make it more closely fit the patient's ears.

[0027] Please continue to see Figure 4When the patient's head enters the rectangular frame of the fixing device and does not abut against the two inner sides of the rectangular frame, the distance between the earmuff body 22 and the fixing block 21 can be adjusted to reduce the distance between the earmuff body 22 and the inner wall of the rectangular frame. In this embodiment, the first adjustment component 3 includes a first rotating cylinder 31 rotatably connected to the fixing block 21 on the side close to the earmuff body 22, and the earmuff body 22 is threadedly connected in the first rotating cylinder 31. Specifically, a first truncated cone 212 is provided on the side close to the earmuff body 22 of the fixing block 21, and a first annular groove 2121 is formed on the side close to the fixing block 21 of the first truncated cone 212, and a first clamping ring 311 sleeved in the first annular groove 2121 is provided on the inner side of the first rotating cylinder 31. The inner wall of the first rotating cylinder 31 has a first internal thread 312, and the outer wall of the earmuff body 22 close to the first rotating cylinder 31 has a first external thread 221 adapted to the first internal thread 32, and the earmuff body 22 and the first rotating cylinder 31 are threadedly connected through the first internal thread 312 and the first external thread 221. When in use, the first rotating cylinder 31 is rotated so that the first rotating cylinder 31 and the first truncated table 212 are idling, and the earmuff body 22 is fixed by hand at the same time. At this time, the earmuff body 22 will move under the action of the first external thread 221 and the first internal thread 312 during the rotation of the first rotating cylinder 31. Since the width of a person's head is constant, the first rotating cylinder 31 will move to both sides during the rotation process. At this time, the earmuff body 22 can increase the distance between the fixed block 21, thereby increasing the distance between the two earmuff parts 2 at both ends, so that the earmuff parts 2 can abut against the two inner sides of the rectangular frame. If it is necessary to reduce the distance between the earmuff body 22 and the fixed block 21, the first rotating cylinder 31 can be rotated in the opposite direction in the same way.

[0028] In a preferred embodiment, a first prism 213 may be provided on one side of the fixed block 21 close to the earmuff body 22, and a first prism groove 222 for inserting the first prism 213 may be provided at one end of the earmuff body 22 close to the fixed block 21, and the earmuff body 22 is slidably connected to the first prism 213 through the first prism groove 222. Since the first prism groove 222 is slidably connected to the first prism 213, and the earmuff body 22 is threadedly connected to the first rotating cylinder 31, when the first rotating cylinder 31 is rotated, the first prism groove 222 is stuck by the first prism 213, so that the earmuff body 22 cannot rotate with the first rotating cylinder 31. During the rotation of the first rotating cylinder 31, a certain horizontal force is applied to the earmuff body 22, so that the earmuff body 22 can be driven to move parallel to the first prism 213. This embodiment allows the detection personnel to automatically move the earmuff body 22 without holding it by hand, and the use process is simpler. In this embodiment, the first prism 213 is a hexagonal prism, and the first prism groove 222 is a hexagonal groove matched with the first prism 213. In order to reduce the influence of noise after the patient wears the earmuff body 22, the inner wall of the earmuff body 2 is provided with a mounting tube 6, and an earplug 61 is slidably connected in the mounting tube 6. In order to allow the earplug 61 to slide in the mounting tube 6 as the earmuff body 22 moves, a spring 62 is provided in the mounting tube 6, and the spring 62 is located on the side of the earplug 61 close to the fixing block 21. In the process of the movement of the earmuff body 22, the earplug 61 can slide in the mounting tube 6 due to the contraction and reset of the spring 62.

[0029] Please continue to see Figure 5 , when the distance between the earmuff body 22 and the fixing block 21 is adjusted, if there is still a gap between the earmuff body 22 and the rectangular frame of the fixing device, the distance between the rear cover 23 and the fixing block 21 can be adjusted by the second adjustment component 4 so that the rear cover 23 abuts against both sides of the rectangular frame. In this embodiment, the second adjustment component 4 includes a second rotating cylinder 41 rotatably connected to the side of the fixing block 21 close to the rear cover 23, and the rear cover 23 is threadedly connected in the second rotating cylinder 41. A second truncated cone 214 is provided on the side of the fixing block 21 close to the rear cover 23, and a second annular groove 2141 is formed on the side of the second truncated cone 214 close to the fixing block 21, and a second clamping ring 411 sleeved in the second annular groove 2141 is provided on the inner side of the second rotating cylinder 41. The inner wall of the second rotating cylinder 41 has a second internal thread 412, and the outer wall of the rear cover 23 close to the second rotating cylinder 41 has a second external thread 231 adapted to the second internal thread 412, and the rear cover 23 and the second rotating cylinder 41 are threadedly connected through the second internal thread 412 and the second external thread 231. When in use, the second rotating cylinder 41 and the second truncated table 214 are idled by rotating the second rotating cylinder 41 while holding the rear cover 23 by hand. Meanwhile, the rear cover 23 moves due to the second outer thread 231 and the second inner thread 412 during the rotation of the second rotating cylinder 41 .

[0030] Similarly, in a preferred embodiment, a second prism 215 can be provided on one side of the fixed block 21 close to the rear cover 23, and a second prism groove 232 for inserting the second prism 215 is provided on one end of the rear cover 23 close to the fixed block 21. Specifically, since the second prism groove 232 is slidably connected to the second prism 215, and the rear cover 23 is threadedly connected to the second rotating cylinder 4, when the second rotating cylinder 4 is rotated, the rear cover 23 cannot rotate with the second rotating cylinder 4 due to the action of the second prism 215 and the second prism groove 232. During the rotation of the second rotating cylinder 4, a certain horizontal force will be applied to the rear cover 23, so that the rear cover 23 can be driven to move parallel to the second prism 215, so that the distance between the rear cover 23 and the fixed block 21 can be increased. Similarly, in this embodiment, the second prism 215 is a hexagonal prism, and the second prism groove 232 is a six-sided groove adapted to the second prism 215.

[0031] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the utility model.

Claims

1. A soundproof earmuff for nuclear magnetic resonance detection, comprising a head-mounted portion and earmuff portions arranged at both ends of the head-mounted portion, characterized in that: The earmuff part includes a fixing block connected to both ends of the head-mounted part, an earmuff body arranged on the side of the fixing block close to the head, and a back cover arranged on the side of the fixing block away from the head. The earmuff part also includes a first adjustment component arranged between the earmuff body and the fixing block for adjusting the distance between the earmuff body and the fixing block, and a second adjustment component arranged between the back cover and the fixing block for adjusting the distance between the back cover and the fixing block.

2. The soundproof earmuff for nuclear magnetic resonance detection according to claim 1, characterized in that: The first adjustment component includes a first rotating cylinder rotatably connected to a side of the fixing block close to the earmuff body, and the earmuff body is threadedly connected in the first rotating cylinder.

3. The soundproof earmuff for nuclear magnetic resonance detection according to claim 2, characterized in that: A first truncated cone is provided on one side of the fixing block close to the earmuff body, a first annular groove is formed on one side of the first truncated cone close to the fixing block, and a first clamping ring sleeved in the first annular groove is provided on the inner side of the first rotating cylinder; The inner wall of the first rotating cylinder has a first internal thread, the outer wall of the earmuff body close to the first rotating cylinder has a first external thread matched with the first internal thread, and the earmuff body and the first rotating cylinder are threadedly connected through the first internal thread and the first external thread.

4. The soundproof earmuff for nuclear magnetic resonance detection according to claim 3, characterized in that: A first prism is arranged on one side of the fixing block close to the earmuff body, and a first prism groove for inserting the first prism is opened on one end of the earmuff body close to the fixing block.

5. The soundproof earmuff for nuclear magnetic resonance detection according to claim 1, characterized in that: The second adjustment assembly includes a second rotating cylinder rotatably connected to a side of the fixing block close to the rear cover, and the rear cover is threadedly connected in the second rotating cylinder.

6. The soundproof earmuff for nuclear magnetic resonance detection according to claim 5, characterized in that: The fixing block is provided with a second truncated cone on one side close to the rear cover, a second annular groove is formed on the second truncated cone on one side close to the fixing block, and a second clamping ring sleeved in the second annular groove is provided on the inner side of the second rotating cylinder; The inner wall of the second rotating cylinder has a second internal thread, the outer wall of the rear cover close to the second rotating cylinder has a second external thread matched with the second internal thread, and the rear cover is threadedly connected to the second rotating cylinder through the second internal thread and the second external thread.

7. The soundproof earmuff for nuclear magnetic resonance detection according to claim 5, characterized in that: A second prism is arranged on one side of the fixing block close to the rear cover, and a second prism groove for inserting the second prism is opened on one end of the rear cover close to the fixing block.

8. The soundproof earmuff for nuclear magnetic resonance detection according to claim 1, characterized in that The inner wall of the earmuff body is provided with a mounting tube, and an earplug is slidably connected inside the mounting tube.

9. The soundproof earmuff for nuclear magnetic resonance detection according to claim 8, characterized in that : A spring is arranged in the mounting tube, and the spring is located on the side of the earplug close to the fixing block.

10. The soundproof earmuff for nuclear magnetic resonance detection according to claim 1, characterized in that: An anti-collision cover is arranged on the top of the head-mounted part.

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