Noise reduction earplug for magnetic resonance examination

Abstract

The utility model relates to the technical field of noise reduction equipment, and discloses a noise reduction earplug for magnetic resonance examination, which comprises two groups of earplug shells, one side of each earplug shell is provided with a circular groove; according to the utility model, through the arrangement of the circular groove, the movable block, the rotating block and the threaded rod, when the fixed block is rotated, the internal threaded block drives the threaded rod to rotate and move along the interior of the earplug shell during rotation, and then the movable block is driven to move along the inner wall of the circular groove as a whole; when the movable block moves to be separated from the interior of the circular groove, the spring drives the rotating block to rotate by taking the joint of the rotating shaft and the movable block as the center under the condition of elastic reset, so that the clamping and fixing of the clamping block are relieved, and the whole rubber sound insulation cylinder can be replaced at the moment; therefore, the in-ear end of the earplug can be replaced more quickly and conveniently.

Description

Technical Field

[0001] This utility model relates to the technical field of magnetic resonance imaging (MRI) auxiliary equipment, and in particular to a noise-canceling earplug for MRI examination. Background Technology

[0002] Magnetic resonance imaging (MRI) is a medical imaging technique that utilizes the principle of magnetic resonance to convert the patient's internal structures into images for doctors' reference. MRI technology can be used to examine the heart, brain, and blood vessels, helping doctors detect lesions that are difficult to detect. It is of great significance for the early screening of tumors and cardiovascular and cerebrovascular diseases. However, current MRI machines require patients to be pushed into the machine for examinations that last about half an hour. During this process, the MRI machine emits noise. Being in a closed and continuously noisy environment for a long time can cause psychological stress for patients, thus affecting their physical and mental health.

[0003] Hospitals typically provide patients with earplugs or noise-canceling headphones before an MRI scan to reduce noise exposure. However, since these earplugs need to be inserted deep into the ear, the earplugs must be completely replaced before reuse to ensure hygiene and prevent cross-infection.

[0004] Existing technology, such as patent document CN202320564202.3, discloses a noise-canceling earphone for magnetic resonance imaging (MRI) examination. In use, a rubber earplug is inserted into the patient's ear, a rubber sound-isolating tube is located inside the ear canal, and an external rubber block blocks the entrance to the ear canal. The noise generated by the MRI equipment is isolated by the sound-insulating material. However, in the aforementioned noise-canceling earphone, the external rubber block, the rubber sound-isolating tube, and the rubber earplug are integrated into one unit, making the earplug inconvenient to replace and hindering reuse; its structure needs improvement. To facilitate faster and more convenient replacement of the noise-canceling earplug, we propose a noise-canceling earplug for MRI examination. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a noise-canceling earplug for magnetic resonance imaging (MRI) examination, which has the advantage of allowing for faster and more convenient replacement of the earplug's in-ear end.

[0006] According to a first aspect of the present invention, a noise-canceling earplug for magnetic resonance imaging (MRI) is characterized in that it comprises:

[0007] The earplug shells are in two sets, and a circular groove is provided on one side of each earplug shell.

[0008] The replacement mechanism, located inside the earbud shell, includes a threaded rod that is threadedly connected to the inner surface of the earbud shell. An internal threaded block is threadedly fitted onto the outer surface of the threaded rod, and the internal threaded block is rotatably connected to the earbud shell. A movable block is fixedly connected to one end of the threaded rod. Several sets of grooves are formed on the movable block, and a rotating shaft is rotatably connected inside the grooves. A rotating block is fixedly fitted onto the outer surface of the rotating shaft, and a spring is fixedly connected between the movable block and the rotating block.

[0009] The noise-canceling earplug for magnetic resonance imaging according to the present invention has at least the following beneficial effects: by setting a circular groove, a movable block, a rotating block, and a threaded rod, when the fixed block is rotated, the internal threaded block will drive the threaded rod to move along the inside of the earplug shell while rotating, thereby driving the movable block to move along the inner wall of the circular groove. When the movable block moves to the point of disengagement from the inside of the circular groove, the spring will elastically reset and drive the rotating block to rotate around the connection between the rotating shaft and the movable block, thereby releasing the locking block. At this time, the rubber soundproof tube can be replaced, thereby achieving a faster and more convenient replacement of the earplug's in-ear end, which is beneficial for secondary use.

[0010] According to some embodiments of this utility model, a rubber sound insulation cylinder is provided between several sets of rotating blocks. The interior of the rubber sound insulation cylinder is filled with sound insulation material. One end of the rubber sound insulation cylinder is fixedly connected to a locking block. The rotating block abuts against the locking block. A sound insulation cotton sleeve is fixedly fitted onto the outer surface of the rubber sound insulation cylinder.

[0011] According to some embodiments of this utility model, a fixing block is fixedly connected to the outer surface of the internal thread block.

[0012] According to some embodiments of this utility model, a connecting rope is fixedly connected between the two sets of earplug shells, and two sets of fixing sleeves are movably connected to the outer surface of the connecting rope.

[0013] According to some embodiments of this utility model, an ear loop is fixedly connected to one end of the fixing sleeve.

[0014] According to some embodiments of the present invention, one end of the threaded rod is fixedly connected to a limiting block.

[0015] According to some embodiments of this utility model, the sound insulation cotton cover is made of memory foam.

[0016] According to some embodiments of this utility model, the number of fixing blocks is two sets, and the two sets of fixing blocks are arranged opposite to each other.

[0017] According to some embodiments of this utility model, the ear hook is made of a flexible material.

[0018] According to some embodiments of this utility model, the flexible material is deformable rubber.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a schematic diagram of the structure of a noise-canceling earplug for magnetic resonance imaging according to an embodiment of the present invention.

[0022] Figure 2 This is a partial structural schematic diagram of a noise-canceling earplug for magnetic resonance imaging according to an embodiment of the present invention.

[0023] Figure 3 This is a partial cross-sectional view of the noise-canceling earplug for magnetic resonance imaging according to an embodiment of the present invention.

[0024] Figure 4 for Figure 3 A magnified structural diagram of part A in the middle.

[0025] Figure 5 This is an exploded view of the structure of a noise-canceling earplug for magnetic resonance imaging according to an embodiment of the present invention.

[0026] Figure 6 for Figure 5 A magnified structural diagram of section B.

[0027] 1. Earplug shell; 2. Circular groove; 3. Threaded rod; 4. Movable block; 5. Rotating shaft; 6. Rotating block; 7. Spring; 8. Internal threaded block; 9. Fixing block; 10. Limiting block; 11. Rubber sound insulation tube; 12. Locking block; 13. Sound insulation cotton sleeve; 14. Ear hook; 15. Fixing sleeve; 16. Connecting rope. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0031] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0032] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 6 As shown, the noise-canceling earplug for magnetic resonance imaging according to an embodiment of the present invention includes:

[0033] Earplug shell 1, there are two sets of earplug shell 1, and a circular groove 2 is provided on one side of the earplug shell 1;

[0034] The replacement mechanism is located inside the earplug shell 1 and includes a threaded rod 3. The threaded rod 3 is threadedly connected to the inside of the earplug shell 1. An internal threaded block 8 is threadedly fitted onto the outer surface of the threaded rod 3. The internal threaded block 8 is rotatably connected to the earplug shell 1. A movable block 4 is fixedly connected to one end of the threaded rod 3. Several sets of grooves are provided on the movable block 4. A rotating shaft 5 is rotatably connected inside the grooves. A rotating block 6 is fixedly fitted onto the outer surface of the rotating shaft 5. A spring 7 is fixedly connected between the movable block 4 and the rotating block 6.

[0035] In actual use, by setting up a circular groove 2, a movable block 4, a rotating block 6, and a threaded rod 3, when the fixed block 9 is rotated, the internal threaded block 8 will drive the threaded rod 3 to move along the inside of the earplug shell 1 while rotating, thereby driving the movable block 4 to move along the inner wall of the circular groove 2. When the movable block 4 moves out of the inside of the circular groove 2, the spring 7 will drive the rotating block 6 to rotate around the connection between the rotating shaft 5 and the movable block 4 under elastic reset, thereby releasing the locking of the locking block 12. At this time, the rubber soundproof tube 11 can be replaced as a whole, thereby achieving a faster and more convenient replacement of the earplug in-ear end, which is beneficial for secondary use.

[0036] Specifically, when the internal threaded block 8 rotates, the threaded rod 3 will move left and right along the inside of the earplug shell 1 while rotating, thereby driving the movable block 4 to move as a whole. Due to the setting of the circular groove 2, when the movable block 4 moves into the inside of the circular groove 2, the inner wall of the circular groove 2 will squeeze several sets of rotating blocks 6, thereby driving the rotating blocks 6 to rotate around the connection between the rotating shaft 5 and the movable block 4, thereby gripping and fixing the object on one side of the movable block 4.

[0037] In some specific embodiments of this utility model, it may also have the following additional technical features: a rubber sound insulation cylinder 11 is provided between several sets of rotating blocks 6, the inside of the rubber sound insulation cylinder 11 is filled with sound insulation material, a locking block 12 is fixedly connected to one end of the rubber sound insulation cylinder 11, the rotating block 6 abuts against the locking block 12, and a sound insulation cotton sleeve 13 is fixedly sleeved on the outer surface of the rubber sound insulation cylinder 11.

[0038] In some specific embodiments of this utility model, it may also have the following additional technical features: the sound insulation cotton cover 13 is made of memory foam.

[0039] Due to the setting of the locking block 12, when the rotating block 6 clamps, the locking block 12 will be gripped and fixed, thereby fixing the rubber sound insulation tube 11 as a whole. Due to the setting of the sound insulation cotton sleeve 13, it will be easy to adapt to ear canals of different sizes.

[0040] In some specific embodiments of this utility model, it may also have the following additional technical features: a fixing block 9 is fixedly connected to the outer surface of the internal thread block 8. Due to the setting of the fixing block 9, it is more convenient to rotate the internal thread block 8.

[0041] In some specific embodiments of this utility model, it may also have the following additional technical features: the number of fixing blocks 9 is two sets, and the two sets of fixing blocks 9 are arranged opposite to each other.

[0042] In some specific embodiments of this utility model, it may also have the following additional technical features: a connecting rope 16 is fixedly connected between the two sets of earplug shells 1, and two sets of fixing sleeves 15 are movably connected to the outer surface of the connecting rope 16. Due to the setting of the connecting rope 16, the two sets of earplug shells 1 are connected, thereby preventing the earplugs from being lost.

[0043] In some specific embodiments of this utility model, it may also have the following additional technical features: an ear hook 14 is fixedly connected to one end of the fixing sleeve 15.

[0044] In some specific embodiments of this utility model, it may also have the following additional technical features: the ear hook 14 is made of a flexible material, which is deformable rubber.

[0045] The ear hook 14 prevents the earplugs from falling out, and its material makes it easy to fit different ear sizes.

[0046] In some specific embodiments of this utility model, it may also have the following additional technical features: a limiting block 10 is fixedly connected to one end of the threaded rod 3. Due to the setting of the limiting block 10, the movement distance of the threaded rod 3 is limited.

[0047] By setting up the ear hook 14, the fixing sleeve 15 and the connecting rope 16, when the earplug is worn, the ear hook 14 is clipped to the auricle and adjusted to a suitable shape. Then, the distance from which the connecting rope 16 is pulled out of the fixing sleeve 15 is adjusted and the sound insulation cotton sleeve 13 is inserted into the ear canal, thereby preventing the earplug from falling off when worn.

[0048] Working principle and usage process of this utility model:

[0049] When the earplug needs to be replaced, the rotating fixing block 9 drives the internal threaded block 8 to rotate, which in turn drives the threaded rod 3 to move along the inside of the earplug shell 1 while rotating. At this time, the movable block 4 will move along the inner wall of the circular groove 2 under the drive of the threaded rod 3. When the movable block 4 moves out of the inside of the circular groove 2, the spring 7 will drive the rotating block 6 to rotate around the connection between the rotating shaft 5 and the movable block 4 as the midpoint, thereby releasing the locking block 12. At this time, the rubber soundproof tube 11 can be replaced. When it is necessary to fix the replaced rubber soundproof tube 11, the fixing block 9 is rotated in the opposite direction. At this time, the threaded rod 3 will drive the movable block 4 to gradually move into the inside of the circular groove 2 while rotating. At this time, the inner wall of the circular groove 2 will squeeze the rotating block 6, thereby gripping and fixing the locking block 12. This achieves a faster and more convenient replacement of the earplug in the ear, which is beneficial for reuse and more hygienic.

[0050] When wearing the earplugs, the ear hook 14 is clipped onto the auricle and adjusted to a suitable shape. Then, the distance from which the connecting rope 16 is pulled out of the fixing sleeve 15 is adjusted, and the sound-absorbing cotton sleeve 13 is inserted into the ear canal to prevent the earplugs from falling off during wear.

[0051] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A noise reducing earplug for magnetic resonance examinations, characterized in that Including: Earplug shell (1), the number of earplug shell (1) is two groups, one side of the earplug shell (1) is provided with a circular groove (2); The replacement mechanism is arranged in the earplug shell (1), including a threaded rod (3), the threaded rod (3) is screwed with the inner thread sleeve of the earplug shell (1), the outer surface of the threaded rod (3) is screwed with an inner threaded block (8), the inner threaded block (8) is rotatably connected with the earplug shell (1), one end of the threaded rod (3) is fixedly connected with a movable block (4), a plurality of grooves are formed in the movable block (4), a rotating shaft (5) is rotatably connected in the groove, a rotating block (6) is fixedly sleeved on the outer surface of the rotating shaft (5), the movable block (4) and the rotating block (6) are fixedly connected with a spring (7).

2. The noise-reducing earplug for magnetic resonance examinations according to claim 1, characterized in that A plurality of rotating blocks (6) are provided with rubber soundproof cylinders (11), the inside of the rubber soundproof cylinder (11) is filled with sound insulation material, one end of the rubber soundproof cylinder (11) is fixedly connected with a clamping block (12), the rotating block (6) abuts on the clamping block (12), the outer surface of the rubber soundproof cylinder (11) is fixedly sleeved with a sound insulation cotton sleeve (13).

3. A noise reducing earplug for magnetic resonance examinations according to claim 2, characterized in that The outer surface of the inner threaded block (8) is fixedly connected with a fixed block (9).

4. A noise reducing earplug for magnetic resonance examinations according to claim 3, characterized in that Two groups of earplug shells (1) are fixedly connected with a connecting rope (16), the outer surface of the connecting rope (16) is movably connected with two groups of fixed sleeves (15).

5. A noise reducing earplug for magnetic resonance examinations according to claim 4, characterized in that One end of the fixed sleeve (15) is fixedly connected with an ear hook (14).

6. A noise reducing earplug for magnetic resonance examinations as claimed in claim 5, characterized in that One end of the threaded rod (3) is fixedly connected with a limiting block (10).

7. A noise reducing earplug for magnetic resonance examinations as claimed in claim 6, characterized in that The material of the sound insulation cotton sleeve (13) is memory cotton.

8. A noise reducing earplug for magnetic resonance examinations according to claim 7, characterized in that The number of the fixed block (9) is two groups, and the two groups of fixed blocks (9) are oppositely arranged.

9. A noise reducing earplug for magnetic resonance examinations as claimed in claim 8, characterized in that The ear hook (14) is made of flexible material.

10. A noise reducing earplug for magnetic resonance examinations according to claim 9, characterized in that The flexible material is deformable rubber. The flexible material is deformable rubber.

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