Head-mounted noise reduction protection device for nuclear magnetic resonance examination

Abstract

The invention discloses a head-mounted noise reduction protection device for nuclear magnetic resonance examination, and relates to the technical field of medical equipment, the head-mounted noise reduction protection device comprises an arc-shaped head top plate, and the rear end of the arc-shaped head top plate is movably connected with a first threaded rod. According to the device disclosed by the invention, two T-shaped plates I can be driven to move forwards through mutual cooperation of a worm I, a worm gear I, a threaded rod I and the threaded rod I; in the process of driving two first T-shaped plates to move forwards, two sliding blocks can be driven to get close to each other under the mutual cooperation of a sliding frame, a first fixing shaft, a second fixing shaft, a third fixing shaft, a square block and a second fixing rod; two head clamping plates can be driven to get close to each other under the action of a second connecting plate through mutual approaching of two sliding blocks until the head of the patient is clamped and fixed, and at the moment, the wearing process of the device can be achieved.

Description

Technical Field

[0001] The invention relates to a noise reduction and protection device for nuclear magnetic resonance examination, and in particular to a head-mounted noise reduction and protection device for nuclear magnetic resonance examination. Background Art

[0002] Magnetic resonance imaging is the latest medical imaging technology that uses the principle of nuclear magnetic resonance. It has the advantages of multiple imaging parameters, fast scanning speed, high tissue resolution and clearer images. It can help doctors "see" early lesions that are difficult to detect. It has become a powerful tool for early screening of tumors, heart disease and cerebrovascular disease. However, the process of nuclear magnetic resonance imaging will generate a lot of noise. If it is not handled in time, it can easily cause adverse effects on the patient's hearing and physical health.

[0003] At present, there are still some defects and deficiencies in the use of noise reduction protection devices for nuclear magnetic resonance examinations. The specific areas that need to be improved are as follows:

[0004] 1. Most of the existing noise reduction protection devices for MRI examinations are directly installed on the MRI examination bed, which makes it inconvenient for patients to lie on the examination bed during the MRI examination and is also inconvenient for medical staff to operate.

[0005] 2. Existing noise reduction protection devices for nuclear magnetic resonance examination mostly directly block the patient's ears through earplugs when in use. This noise reduction method is single and has poor noise reduction effect.

[0006] 3. The existing noise reduction protection device for nuclear magnetic resonance examination is not convenient to carry and store after use, and the device is inconvenient to adjust during use. Summary of the invention

[0007] The object of the present invention is to provide a head-mounted noise reduction and protection device for magnetic resonance imaging examination, so as to solve the problem that the existing noise reduction and protection devices for magnetic resonance imaging examination proposed in the above-mentioned background technology are mostly directly installed on the magnetic resonance imaging examination bed, which makes it inconvenient for patients to lie on the examination bed during the magnetic resonance imaging examination and is also inconvenient for medical staff to operate.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a head-mounted noise reduction protective device for nuclear magnetic resonance examination, comprising an arc-shaped head top plate, a threaded rod 1 is movably connected to the rear end of the arc-shaped head top plate, the threaded rod 1 is threadedly connected to a threaded block 1, the left and right ends of the threaded block 1 are fixedly connected to a T-shaped plate 1, the two T-shaped plates 1 are respectively movably connected to the rear sides of two head fixing components, the relatively close sides of the two head fixing components are respectively fixedly connected to the left and right ends of the arc-shaped head top plate, and the relatively far sides of the two head fixing components are respectively fixedly connected to the left and right ends of the arc-shaped head top plate. The two sides are fixedly connected with a noise reduction protection component and a T-shaped plate 2, and the upper ends of the two head fixing components are relatively close to the sides and are movably connected to a rotating sleeve with two guide grooves provided inside. The left side of the rotating sleeve is fixedly connected with a bevel gear 1, and the bevel gear 1 is meshed with the bevel gear 2 for transmission. The bevel gear 2 is fixedly connected to the lower end of the rotating shaft 1, and the rotating shaft 1 is movably connected to an L-shaped plate 1 with a connecting hole provided inside the upper end. The lower end of the L-shaped plate 1 is fixedly connected to the upper end of the concave frame, and the front end of the concave frame is fixedly connected to the rear end of the arc-shaped head top plate.

[0009] As a preferred technical solution of the present invention, the concave frame is movably connected to the rear end of the threaded rod one through a connecting hole opened inside the rear end thereof, a worm gear one is fixedly connected to the rear side smooth rod position of the threaded rod one, the worm gear one is meshingly transmitted with the worm one, a rotating handle one is provided at the upper end of the worm one, support plates are movably connected to the smooth rod parts on the upper and lower sides of the worm one, the right ends of the two support plates are fixedly connected to the left end of the concave frame, and a rotating handle three is provided at the upper end of the rotating shaft one.

[0010] As a preferred technical solution of the present invention, the left and right ends of the rotating sleeve are movably connected with L-shaped plates 2, and the relatively close ends of the two L-shaped plates 2 are respectively fixedly connected to the left and right ends of the concave frame, and the upper and lower ends of the threaded block 1 are fixedly connected with sliders, and the two sliders are respectively movably connected to the inside of the slide grooves opened on the upper and lower side surfaces inside the concave frame, and the rear end of the concave frame is fixedly connected with a handle, and the two T-shaped plates 2 are respectively threadedly connected to the two threaded rods 2 through the threaded holes opened inside the relatively distant ends thereof, and the upper ends of the two threaded rods 2 are respectively provided with rotating handles 2, and the lower ends of the two threaded rods 2 are respectively movably connected to the upper ends of the two L-shaped bottom plates, and the upper ends of the two L-shaped bottom plates are fixedly connected with two T-shaped limiting rods 1, and the four T-shaped limiting rods are movably connected to the two T-shaped plates 2 with two circular holes opened inside in groups of two.

[0011] As a preferred technical solution of the present invention, the two head fixing assemblies each include a head clamp, the relatively distant ends of the two head clamps are fixedly connected to two fixing rods one, the four fixing rods one are grouped in pairs and movably connected to two sliding plates each having two circular holes provided inside, the relatively distant ends of the two sliding plates are respectively fixedly connected to the relatively close sides of the two noise reduction protection assemblies, the upper ends of the two sliding plates are fixedly connected to an L-shaped plate three, the two L-shaped plates three are respectively threadedly connected to two threaded rods three through threaded holes provided inside the rear ends thereof, and the two threaded rods three are movably connected to an L-shaped plate four at the middle light rod position.

[0012] As a preferred technical solution of the present invention, the lower ends of the two L-shaped plates four are respectively fixedly connected to the upper ends of the two sliding blocks, and the two sliding blocks are movably connected to the four fixing rods two through the two circular holes opened therein, the four fixing rods two are grouped in twos, and their relatively close ends are respectively fixedly connected to the left and right ends of the arc-shaped head top plate, the four fixing rods two are grouped in twos, and their relatively far ends are respectively fixedly connected to the relatively close ends of the two square blocks, and the relatively far ends of the two square blocks are respectively fixedly connected to the relatively close ends of the two T-shaped plates two, the upper ends of the two square blocks are fixedly connected with a fixing shaft one, the two fixing shafts one are respectively movably connected to the front ends of the two hinged rods one, the rear ends of the two hinged rods one are movably connected with a fixing shaft two, the lower ends of the two fixing shafts two are respectively fixedly connected to the upper ends of the two sliding frames, and the two sliding frames are respectively movably connected to the two T-shaped plates one.

[0013] The lock is located at the bottom of the two guide rails, and the two guide rails are connected with the two guide rails at the bottom to the upper and lower ends of the two guide rails, and the two guide rails are connected with the two guide rails at the bottom to the lower ends of the two guide rails.

[0014] As a preferred technical solution of the present invention, the two noise reduction protection components each include a fixed plate, the relatively close ends of the two fixed plates are respectively fixedly connected to the relatively distant ends of the two sliding plates, the front ends of the two fixed plates are movably connected with threaded rods four, the front ends of the two threaded rods four are each provided with rotating handles four, the two threaded rods four are respectively threadedly connected to the two threaded blocks two, the relatively close ends of the two threaded blocks two are respectively fixedly connected to the relatively distant ends of the two mounting plates, the relatively close ends of the two mounting plates are both fixedly connected with sleeve rods, the two sleeve rods are respectively movably connected to the two sliding sleeves, and the relatively close ends of the two sleeve rods are both fixedly connected with plug-in blocks.

[0015] As a preferred technical solution of the present invention, the two plug-in blocks are each provided with a soundproofing earplug through a plug-in groove opened inside the relatively close end thereof, the two sliding sleeves are respectively fixedly connected to the two soundproofing earmuffs having circular holes opened inside the relatively distant ends, the relatively close ends of the two soundproofing earmuffs are each provided with a protective cushion, the upper ends of the two soundproofing earmuffs are each fixedly connected to an L-shaped tooth plate, the two L-shaped tooth plates are respectively meshed with two gears for transmission, the two gears are respectively fixedly connected to the front ends of the two rotating shafts two, and the middle positions of the two rotating shafts two are each movably connected to an L-shaped plate five.

[0016] As a preferred technical solution of the present invention, the relatively distant ends of the two L-shaped plates five are respectively fixedly connected to the relatively close ends of the two mounting plates, and the upper ends of the two mounting plates are fixedly connected with L-shaped plates six. The two L-shaped plates six are movably connected to the upper side light rod parts of the two worm gears two through the connecting holes opened inside the upper ends thereof, and the upper ends of the two worm gears two are respectively provided with rotating handles five. The two worm gears two are respectively meshed with the two worm wheels two for transmission, and the two worm wheels two are respectively fixedly connected to the rear ends of the two rotating shafts two, and the two mounting plates are respectively movably connected to the four T-shaped limiting rods two through the two circular holes opened inside them.

[0017] As a preferred technical solution of the present invention, the four T-shaped limiting rods are grouped in pairs, and their relatively close ends are respectively fixedly connected to the relatively distant ends of the two sound insulation earmuffs, and the lower sides of the relatively distant ends of the two mounting plates are fixedly connected with limiting blocks, and the two limiting blocks are respectively movably connected to the two T-shaped limiting rods three, and the rear ends of the two T-shaped limiting rods three are respectively fixedly connected to the front ends of the two mounting plates, and the upper sides of the front ends of the two mounting plates are respectively fixedly connected with L-shaped plates seven, and the two L-shaped plates seven are respectively movably connected to the front side smooth rod parts of the two threaded rods four through the connecting holes opened inside the front ends thereof.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention can drive two T-shaped plates 1 to move forward through the mutual cooperation between the arranged worm screw 1, worm wheel 1, threaded rod 1 and threaded rod 1. In the process of driving the two T-shaped plates 1 to move forward, the mutual cooperation between the arranged sliding frame, fixed shaft 1, fixed shaft 2, fixed shaft 3, square block and fixed rod 2 can drive the two sliding blocks to approach each other. Through the mutual approach between the two sliding blocks, the two head splints can be driven to approach each other under the action of the arranged connecting plate 2 until the clamping and fixing effect of the patient's head is achieved, and the wearing process of the device can be realized at this time.

[0020] 2. The present invention can drive the mounting plate to move in the front-to-back direction after the device is worn through the mutual cooperation between the threaded rod four and the threaded block two. The movement of the mounting plate can drive the soundproof earmuffs and the soundproof earplugs to move accordingly under the mutual cooperation between the sleeve rod, the sliding sleeve, the plug-in block and the T-shaped limiting rod three, so that the device can adjust the positions of the soundproof earmuffs and the soundproof earplugs according to the different positions of the patient's ears, thereby increasing the flexibility and adaptability of the device during use. The mutual cooperation between the T-shaped limiting rod three and the limiting block can limit the movement direction of the mounting plate.

[0021] 3. The present invention can drive the rotating sleeve to rotate after the device is fixed on the patient's head through the mutual cooperation between the rotating shaft 1, the bevel gear 1 and the bevel gear 2. The rotation of the rotating sleeve can drive the two sliding plates to approach each other under the mutual cooperation of the threaded rod 3 and the L-shaped plate 3. The mutual approach of the two sliding plates can drive the two soundproofing earplugs to approach each other under the mutual cooperation of the mounting plate, the fixing plate, the sleeve rod, the plug-in block, the limiting block and the T-shaped limiting rod 3 until the two soundproofing earplugs are respectively inserted into the patient's ears. At this time, the preliminary noise reduction protection effect can be achieved for the patient during the magnetic resonance imaging examination.

[0022] 4. The present invention can drive the two rotating shafts 2 to rotate after the two soundproofing earplugs are respectively inserted into the patient's ears through the mutual cooperation between the arranged worm gear 2 and the arranged worm gear 2. The rotation of the two rotating shafts 2 can drive the two soundproofing earmuffs to approach each other under the mutual cooperation between the arranged gears and the L-shaped toothed plate until the two soundproofing earmuffs respectively cover the patient's ears. At this time, the noise reduction protection effect of the device on the patient during the magnetic resonance imaging examination can be further increased.

[0023] 5. The present invention can drive the L-shaped bottom plate to move downward by cooperating with each other through the T-shaped plate 2, the threaded rod 2 and the T-shaped limiting rod 1, so that when the patient lies on the examination bed for examination, the lower ends of the two L-shaped bottom plates can overlap the upper end of the examination bed, thereby providing a certain support for the device, effectively reducing the burden on the patient's head when the patient wears the device for magnetic resonance imaging. The device can be conveniently carried and moved through the provided handle, thereby making the device portable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention;

[0025] Figure 2 It is a right-side stereoscopic structural schematic diagram of the present invention;

[0026] Figure 3 It is a rear-view stereoscopic structural schematic diagram of the present invention;

[0027] Figure 4 It is a left-side stereoscopic structural schematic diagram of the arc-shaped head top plate of the present invention;

[0028] Figure 5 It is a schematic diagram of the main three-dimensional structure of the head fixing assembly of the present invention;

[0029] Figure 6 It is a left-side stereoscopic structural schematic diagram of the head fixing assembly of the present invention;

[0030] Figure 7 It is a right-side perspective structural diagram of the noise reduction and protection assembly of the present invention;

[0031] Figure 8 This is a schematic diagram of the main three-dimensional structure of the noise reduction protection component of the present invention;

[0032] Fig. 9 It is a left-side stereoscopic structural schematic diagram of the noise reduction and protection component of the present invention.

[0033] In the figure: 1 arc-shaped head top plate, 2 rotating sleeve, 3 bevel gear 2, 4 bevel gear 1, 5 L-shaped plate 2, 6 head fixing component, 61 sliding plate, 62 vertical plate, 63 fixed rod 1, 64 spring, 65 head clamp, 66 connecting plate, 67 fixed rod 2, 68 L-shaped plate 4, 69 hinged rod 1, 610 fixed shaft 2, 611 L-shaped plate 3, 612 threaded rod 3, 613 hinged rod 2, 614 sliding frame, 615 fixed shaft 3, 616 square block, 617 fixed shaft 1, 618 sliding block, 7 noise reduction protection component, 71 protective cushion, 72 plug-in block, 73 sound insulation ear plug, 74 L-shaped tooth plate, 75 sound insulation earmuff, 76 L-shaped Plate five, 77 rotating shaft two, 78 gear, 79 threaded rod four, 710 L-shaped plate seven, 711 T-shaped limiting rod three, 712 fixing plate, 713 T-shaped limiting rod two, 714 mounting plate, 715 worm gear two, 716 L-shaped plate six, 717 worm two, 718 sliding sleeve, 719 threaded block two, 720 limiting block, 721 sleeve rod, 8 rotating shaft one, 9 L-shaped plate one, 10 T-shaped plate one, 11 L-shaped bottom plate, 12 T-shaped limiting rod one, 13 threaded rod two, 14 T-shaped plate two, 15 concave frame, 16 slider, 17 worm gear one, 18 threaded block one, 19 handle, 20 threaded rod one, 21 support plate, 22 worm one, 23 slide groove. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figure 1-9As shown, the present invention provides a technical solution: a head-mounted noise reduction protection device for nuclear magnetic resonance examination, comprising an arc-shaped head top plate 1, a threaded rod 20 is movably connected to the rear end of the arc-shaped head top plate 1, the threaded rod 20 is threadedly connected to a threaded block 18, and the left and right ends of the threaded block 18 are fixedly connected with a T-shaped plate 10, the two T-shaped plates 10 are respectively movably connected to the rear sides of two head fixing components 6, the relatively close sides of the two head fixing components 6 are respectively fixedly connected to the left and right ends of the arc-shaped head top plate 1, and the relatively far sides of the two head fixing components 6 are fixedly connected with a noise reduction protection component 7 and a T-shaped plate 14, and the rotation of the threaded rod 20 can drive the two T-shaped plates 10 to move under the action of the set threaded block 18. The two head fixing components 6 are moved forward, and then move closer to each other between the two head fixing components 6, so that the wearing process of the device can be realized. In the process of driving the two head fixing components 6 closer to each other, the two noise reduction protection components 7 can be driven to move a certain distance accordingly. The two noise reduction protection components 7 can achieve the noise reduction protection effect of the patient during the nuclear magnetic resonance examination. The relatively close sides of the upper ends of the two head fixing components 6 are movably connected to the rotating sleeve 2 with two guide grooves arranged inside. The left side of the rotating sleeve 2 is fixedly connected with a bevel gear 4, which meshes with the bevel gear 2 3 for transmission. The bevel gear 2 3 is fixedly connected to the lower end of the rotating shaft 8, and the rotating shaft 8 is connected to the L-shaped plate 9 with a connecting hole arranged inside the upper end. The L-shaped plate 19 is movably connected, and the lower end of the L-shaped plate 19 is fixedly connected to the upper end of the concave frame 15. The L-shaped plate 19 is provided to support the rotating shaft 8. The rotation of the rotating shaft 8 can achieve the effect of driving the rotating sleeve 2 to rotate under the cooperation of the bevel gear 23 and the bevel gear 14. The rotation of the rotating sleeve 2 can continue to drive the two noise reduction protection components 7 to approach each other under the action of the two head fixing components 6, thereby realizing the preliminary noise reduction protection process for the patient. The front end of the concave frame 15 is fixedly connected to the rear end of the arc-shaped head top plate 1, and the concave frame 15 is movably connected to the rear end of the threaded rod 20 through the connecting hole opened inside the rear end thereof. The rear side light rod position of the threaded rod 20 is fixedly connected with The worm wheel 17 is meshed with the worm 22 for transmission. The upper and lower polished rod parts of the worm 22 are movably connected with support plates 21. The right ends of the two support plates 21 are fixedly connected to the left end of the concave frame 15. The support plates 21 can support the worm 22. The rotation of the worm 22 can achieve the effect of driving the threaded rod 20 to rotate under the action of the worm wheel 17. The concave frame 15 can support the threaded rod 20. The left and right ends of the rotating sleeve 2 are movably connected with L-shaped plates 25. The relatively close ends of the two L-shaped plates 25 are fixedly connected to the left and right ends of the concave frame 15 respectively. The upper and lower ends of the threaded block 18 are fixedly connected with sliders 16.The two sliders 16 are movably connected to the inside of the slide grooves 23 provided on the upper and lower side surfaces inside the concave frame 15, and the rear end of the concave frame 15 is fixedly connected with a handle 19. The two T-shaped plates 14 are respectively threadedly connected to the two threaded rods 13 through the threaded holes provided inside the relatively far ends thereof, and the lower ends of the two threaded rods 13 are respectively movably connected to the upper ends of the two L-shaped bottom plates 11, and the upper ends of the two L-shaped bottom plates 11 are fixedly connected to two T-shaped limiting rods 12, and the four T-shaped limiting rods 12 are movably connected to the two T-shaped plates 14 with two circular holes provided inside in a group of two, and the L-shaped plate 25 can play a supporting role for the rotating sleeve 2, and the L-shaped plate 25 can play a supporting role for the rotating sleeve 2. The cooperation between the slider 16 and the slide groove 23 can limit the movement direction of the threaded block 18. The handle 19 can be used to carry the device after use. After the device is worn, the two threaded rods 13 can be rotated to drive the two L-shaped bottom plates 11 to move downward under the action of the T-shaped limiting rod 12, until the lower ends of the two L-shaped bottom plates 11 overlap the upper end of the examination bed. At this time, the device can play a certain supporting role in the process of the patient wearing the device for nuclear magnetic resonance examination, thereby effectively reducing the burden on the patient's head caused by the patient wearing the device for a long time during the nuclear magnetic resonance examination.

[0036] The two head fixing components 6 each include a head clamping plate 65, the relatively remote ends of the two head clamping plates 65 are fixedly connected to two fixing rods 1 63, four fixing rods 1 63 are grouped in pairs and are movably connected to two sliding plates 61 each having two circular holes provided therein, the relatively remote ends of the two sliding plates 61 are respectively fixedly connected to the relatively close sides of the two noise reduction protection components 7, the upper ends of the two sliding plates 61 are fixedly connected to an L-shaped plate 3 611, the two L-shaped plates 3 611 are respectively threadedly connected to two threaded rods 3 612 through threaded holes provided inside their rear ends, the middle light rod positions of the two threaded rods 3 612 are movably connected to an L-shaped plate 4 68, the lower ends of the two L-shaped plates 4 68 are respectively fixedly connected to the upper ends of the two sliding blocks 618, and the two sliding The blocks 618 are movably connected to the four fixing rods 67 through the two circular holes opened inside them. The four fixing rods 67 are grouped in pairs, and their relatively close ends are fixedly connected to the left and right ends of the arc-shaped head top plate 1 respectively. The four fixing rods 67 are grouped in pairs, and their relatively far ends are fixedly connected to the relatively close ends of the two square blocks 616 respectively. The relatively far ends of the two square blocks 616 are fixedly connected to the relatively close ends of the two T-shaped plates 14 respectively. The upper ends of the two square blocks 616 are fixedly connected to the fixing shafts 617. The two fixing shafts 617 are movably connected to the front ends of the two hinged rods 69 respectively. The rear ends of the two hinged rods 69 are movably connected to the fixing shafts 610. The lower ends of the two fixing shafts 610 are fixedly connected to the two sliding frames respectively. The upper end of the frame 614, the two sliding frames 614 are movably connected to the two T-shaped plates 10 respectively, and the two sliding frames 614 are movably connected to the rear ends of the two hinged rods 2 613 respectively through another fixed shaft 2 610 set at the lower end thereof. The front ends of the two hinged rods 2 613 are movably connected with the fixed shaft 3 615, and the upper ends of the two fixed shafts 3 615 are respectively fixedly connected to the lower ends of the two sliding blocks 618. The four fixed rods 1 63 are sleeved with springs 64. The four fixed rods 1 63 are grouped in pairs, and their relatively far ends are respectively fixedly connected to the relatively close ends of the two vertical plates 62. The relatively far ends of the two head clamps 65 are fixedly connected with connecting plates 66. The rear ends of the two connecting plates 66 are respectively fixedly connected to the front ends of the two sliding blocks 618. The threaded rod three 612 is movably connected to the rotating sleeve 2 with two guide grooves provided inside the same threaded rod through two guide blocks provided on the relatively close sides thereof. In the process of driving the two T-shaped plates 10 to move forward, the two sliding frames 614 can be driven to approach each other under the cooperation between the provided square block 616, the fixed shaft 1 617 and the hinged rod 1 69. The two sliding frames 614 can be driven to approach each other under the action of the provided fixed shaft 2 610, the hinged rod 2 613 and the fixed shaft 3 615. The two sliding blocks 618 can be driven to approach each other under the action of the provided two connecting plates 616.Thus, the wearing process of the device is realized. The cooperation between the fixed rod 2 67 and the square block 616 can limit the movement direction of the sliding block 618. The rotation of the rotating sleeve 2 can drive the two threaded rods 3 612 to rotate. The rotation of the two threaded rods 3 612 can drive the two sliding plates 61 to approach each other under the action of the two L-shaped plates 3 611, thereby achieving the effect of driving the two noise reduction protection components 7 to approach each other. The L-shaped plate 4 68 can support the threaded rod 3 612. The cooperation between the vertical plate 62, the fixed rod 1 63, the connecting plate 66, the head clamp 65 and the sliding block 618 can limit the movement direction of the sliding plate 61.

[0037] The two noise reduction protection components 7 each include a fixed plate 712, the relatively close ends of the two fixed plates 712 are respectively fixedly connected to the relatively far ends of the two sliding plates 61, the front ends of the two fixed plates 712 are movably connected with threaded rods 79, the two threaded rods 79 are respectively threadedly connected to the two threaded blocks 719, the relatively close ends of the two threaded blocks 719 are respectively fixedly connected to the relatively far ends of the two mounting plates 714, the relatively close ends of the two mounting plates 714 are both fixedly connected with sleeve rods 721, the two sleeve rods 721 are respectively movably connected to the two sliding sleeves 718, the relatively close ends of the two sleeve rods 721 are both fixedly connected with plug-in blocks 72, and the two plug-in blocks 72 are both installed with sound insulation ears through the plug-in grooves opened inside the relatively close ends thereof. The two sliding sleeves 718 are respectively fixedly connected to the two relatively far ends of the soundproof earmuffs 75 with circular holes in the inside, and the relatively close ends of the two soundproof earmuffs 75 are provided with protective cushions 71. The rotation of the threaded rod 479 can drive the mounting plate 714 to move in the front-to-back direction under the action of the set threaded block 2719, so that the positions of the soundproof earmuffs 75 and the soundproof earplugs 73 can be properly adjusted according to the different positions of the patient's ears during use, thereby increasing the flexibility of the device during use. The detachable mounting method is adopted between the plug-in block 72 and the soundproof earplug 73, so that the device can conveniently replace the soundproof earplug 73 after use. The mutual proximity of the sliding plates 61 can drive the two plug-in blocks 72 and the two sound-isolating earplugs 73 to approach each other under the cooperation between the arranged threaded block 2 719, the threaded rod 4 79, the mounting plate 714 and the sleeve rod 721, until the two sound-isolating earplugs 73 are respectively inserted into the patient's ears, thereby achieving a preliminary noise reduction protection effect for the patient during the MRI examination. The upper ends of the two sound-isolating earmuffs 75 are fixedly connected with L-shaped tooth plates 74, and the two L-shaped tooth plates 74 are respectively meshed with two gears 78 for transmission. The two gears 78 are respectively fixedly connected to the front ends of the two rotating shafts 2 77, and the middle positions of the two rotating shafts 2 77 are movably connected with L-shaped plates 5 76. The relatively distant ends of the two L-shaped plates 5 76 are respectively fixedly connected to The relatively close ends of the two mounting plates 714 are fixedly connected with L-shaped plates 6 716 at their upper ends. The two L-shaped plates 6 716 are movably connected with the upper side light rod parts of the two worm gears 717 through the connection holes opened inside the upper ends. The two worm gears 717 are meshed with the two worm wheels 715 for transmission. The two worm wheels 715 are fixedly connected with the rear ends of the two rotating shafts 77. The two mounting plates 714 are movably connected with the four T-shaped limiting rods 713 through the two circular holes opened inside the two mounting plates 714. The four T-shaped limiting rods 713 are grouped in pairs and their relatively close ends are fixedly connected to the relatively far ends of the two soundproof earmuffs 75. The lower sides of the relatively far ends of the two mounting plates 714 are fixedly connected with limiting blocks 720.The two limiting blocks 720 are movably connected to the two T-shaped limiting rods 3 711 respectively, and the rear ends of the two T-shaped limiting rods 3 711 are fixedly connected to the front ends of the two mounting plates 714 respectively. The upper sides of the front ends of the two mounting plates 714 are fixedly connected with L-shaped plates 710. The two L-shaped plates 710 are movably connected to the front side light rod parts of the two threaded rods 4 79 through the connecting holes opened inside the front ends thereof. By rotating the two worm gears 2 717, the two rotating shafts 2 77 can be driven to rotate under the action of the two worm gears 2 715. By rotating the two rotating shafts 2 77, the two gears 78 and the L-shaped toothed plate 74 can be driven to rotate. The soundproof earmuffs 75 are moved closer to each other until the two soundproof earmuffs 75 cover the patient's ears respectively. At this time, the noise reduction protection effect of the device on the patient's ears during the MRI examination can be further increased. The mutual cooperation between the sleeve rod 721 and the sliding sleeve 718 can support the soundproof earmuffs 75. The mutual cooperation between the T-shaped limiting rod 2 713 and the mounting plate 714 can increase the stability of the soundproof earmuffs 75 during movement. The mutual cooperation between the T-shaped limiting rod 3 711 and the limiting block 720 can limit the movement direction of the mounting plate 714.

[0038] The operating steps of the present invention are:

[0039] When the device is used to reduce noise for the patient's ears, the patient is first made to lie on the MRI examination bed, and then the front end of the arc-shaped head top plate 61 is made to be close to the top of the patient's head, and then the worm 22 is rotated. The rotation of the worm 22 can drive the threaded rod 20 to rotate under the action of the worm wheel 17, and the rotation of the threaded rod 20 can drive the threaded block 18 to move forward under the cooperation of the slider 16 and the slide groove 23. In the process of driving the threaded block 18 to move forward, the two T-shaped plates 10 can be driven to move forward. At this time, when the threaded block 18 is driven forward, the two T-shaped plates 10 can be driven forward. The cooperation between the fixed shaft 2 610, the square block 616, the fixed shaft 1 617 and the hinge rod 1 69 can drive the two sliding frames 614 to approach each other, and the two sliding blocks 618 can be driven to approach each other under the action of the fixed shaft 2 610, the hinge rod 2 613 and the fixed shaft 3 615 through the mutual approach between the two sliding frames 614, and the two head clamps 65 can be driven to approach each other under the action of the two connecting plates 616 through the mutual approach between the two sliding blocks 618, thereby realizing the wearing process of the device;

[0040] After the device is fixed on the patient's head, the two threaded rods 79 are rotated according to the different positions of the patient's ears, and then the two mounting plates 714 can be driven to move in the front-to-back direction under the action of the threaded block 719, the limiting block 720 and the T-shaped limiting rod 711. Through the front-to-back movement of the two mounting plates 714, the positions of the soundproof earmuffs 75 and the soundproof earplugs 73 can be adjusted under the action of the T-shaped limiting rod 713, the sleeve rod 721, the sliding sleeve 718 and the plug-in block 72;

[0041] After the positions of the soundproof earmuffs 75 and the soundproof earplugs 73 are adjusted, the rotating shaft 1 8 drives the bevel gear 2 3 to rotate. The rotation of the bevel gear 2 3 can drive the rotating sleeve 2 to rotate under the action of the provided bevel gear 1 4. The rotation of the rotating sleeve 2 can drive the two threaded rods 3 612 to rotate. The rotation of the two threaded rods 3 612 can drive the two sliding plates 61 to approach each other under the action of the provided two L-shaped plates 3 611. In the process of the two sliding plates 61 approaching each other, the two soundproof earplugs 73 can be driven to approach each other under the cooperation between the provided mounting plate 714, the limiting block 720, the T-shaped limiting rod 3 711, the sleeve rod 721 and the plug-in block 72 until the two soundproof earplugs 73 are respectively inserted into the patient's ears, at which time the preliminary noise reduction protection effect for the patient can be achieved.

[0042] After the two soundproofing earplugs 73 are respectively inserted into the patient's ears, the two worm gears 717 are rotated to drive the two worm gears 715 to rotate. The rotation of the two worm gears 715 can drive the two rotating shafts 77 to rotate. The rotation of the two rotating shafts 77 can drive the two soundproofing earmuffs 75 to move closer to each other under the cooperation between the gears 78 and the L-shaped toothed plate 74, until the two soundproofing earmuffs 75 cover the patient's ears respectively, and at this time, the noise reduction protection effect on the patient during the MRI examination can be further increased;

[0043] After the two soundproof earmuffs 75 cover the patient's ears respectively, the two threaded rods 13 are rotated to drive the two L-shaped base plates 11 to move downward under the action of the T-shaped limiting rod 12, until the lower ends of the two L-shaped base plates 1 are overlapped on the upper end of the MRI examination bed, at which time the device worn on the patient's head can be supported, thereby effectively reducing the burden on the patient caused by the device being worn on the patient's head during the MRI examination.

[0044] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A head-mounted noise reduction protective device for nuclear magnetic resonance examination, comprising an arc-shaped head top plate (1), characterized in that: The rear end of the arc-shaped head top plate (1) is movably connected with a threaded rod (20), and the threaded rod (20) is threadedly connected to a threaded block (18). The left and right ends of the threaded block (18) are fixedly connected with a T-shaped plate (10). The two T-shaped plates (10) are movably connected to the rear sides of the two head fixing components (6), respectively. The relatively close sides of the two head fixing components (6) are fixedly connected to the left and right ends of the arc-shaped head top plate (1), respectively. The relatively far sides of the two head fixing components (6) are fixedly connected with a noise reduction protection component (7) and a T-shaped plate (14). The two The upper end of the head fixing component (6) is relatively close to the side thereof and is movably connected to a rotating sleeve (2) having two guide grooves therein; the left side of the rotating sleeve (2) is fixedly connected to a bevel gear 1 (4); the bevel gear 1 (4) is meshed with a bevel gear 2 (3) for transmission; the bevel gear 2 (3) is fixedly connected to the lower end of a rotating shaft 1 (8); the rotating shaft 1 (8) is movably connected to an L-shaped plate 1 (9) having a connecting hole therein at the upper end; the lower end of the L-shaped plate 1 (9) is fixedly connected to the upper end of a concave frame (15); and the front end of the concave frame (15) is fixedly connected to the rear end of the arc-shaped head top plate (1).

2. The head-mounted noise reduction protective device for nuclear magnetic resonance examination according to claim 1, characterized in that: The concave frame (15) is movably connected to the rear end of the threaded rod (20) through a connecting hole provided inside the rear end thereof; a worm wheel (17) is fixedly connected to the rear side smooth rod position of the threaded rod (20); the worm wheel (17) is meshed with a worm (22) for transmission; support plates (21) are movably connected to the smooth rod parts on the upper and lower sides of the worm (22); the right ends of the two support plates (21) are fixedly connected to the left end of the concave frame (15).

3. The head-mounted noise reduction protective device for nuclear magnetic resonance examination according to claim 1, characterized in that: The left and right ends of the rotating sleeve (2) are movably connected to L-shaped plates (5), and the relatively close ends of the two L-shaped plates (5) are fixedly connected to the left and right ends of the concave frame (15), respectively. The upper and lower ends of the threaded block (18) are fixedly connected to sliders (16), and the two sliders (16) are movably connected to the inside of the slide grooves (23) provided on the upper and lower side surfaces inside the concave frame (15), and the rear end of the concave frame (15) is fixedly connected to a handle (19). The two T-shaped plates (14) are respectively threadedly connected to the two threaded rods (13) through threaded holes opened inside the relatively far ends thereof, the lower ends of the two threaded rods (13) are respectively movably connected to the upper ends of the two L-shaped bottom plates (11), the upper ends of the two L-shaped bottom plates (11) are respectively fixedly connected to two T-shaped limiting rods (12), and the four T-shaped limiting rods (12) are respectively movably connected to the two T-shaped plates (14) each having two circular holes opened inside thereof in a group of two.

4. The head-mounted noise reduction protective device for nuclear magnetic resonance examination according to claim 1, characterized in that: The two head fixing components (6) each include a head clamp (65), the relatively remote ends of the two head clamps (65) are fixedly connected to two fixing rods (63), four fixing rods (63) are respectively movably connected to two sliding plates (61) each having two circular holes therein, the relatively remote ends of the two sliding plates (61) are respectively fixedly connected to the relatively close sides of the two noise reduction protection components (7), the upper ends of the two sliding plates (61) are fixedly connected to an L-shaped plate (611), the two L-shaped plates (611) are respectively threadedly connected to two threaded rods (612) through threaded holes therein at their rear ends, and the two threaded rods (612) are movably connected to an L-shaped plate (68) at the middle light rod position.

5. The head-mounted noise reduction protective device for nuclear magnetic resonance examination according to claim 4, characterized in that: The lower ends of the two L-shaped plates (68) are respectively fixedly connected to the upper ends of the two sliding blocks (618); the two sliding blocks (618) are respectively movably connected to the four fixing rods (67) through two circular holes provided therein; the four fixing rods (67) are arranged in pairs, and their relatively close ends are respectively fixedly connected to the left and right ends of the arc-shaped head top plate (1); the four fixing rods (67) are arranged in pairs, and their relatively far ends are respectively fixedly connected to the relatively close ends of the two square blocks (616); the relatively far ends of the two square blocks (616) are respectively fixedly connected to the relatively close ends of the two square blocks (616). They are respectively fixedly connected to the relatively close ends of the two T-shaped plates (14); the upper ends of the two square blocks (616) are fixedly connected to a fixed shaft (617); the two fixed shafts (617) are respectively movably connected to the front ends of the two hinged rods (69); the rear ends of the two hinged rods (69) are movably connected to a fixed shaft (610); the lower ends of the two fixed shafts (610) are respectively fixedly connected to the upper ends of the two sliding frames (614); the two sliding frames (614) are respectively movably connected to the two T-shaped plates (10).

6. The head-mounted noise reduction protective device for nuclear magnetic resonance examination according to claim 5, characterized in that: The two sliding frames (614) are movably connected to the rear ends of the two hinged rods (613) through another fixed shaft (610) arranged at the lower ends thereof, and the front ends of the two hinged rods (613) are movably connected to the fixed shaft (615), and the upper ends of the two fixed shafts (615) are respectively fixedly connected to the lower ends of the two sliding blocks (618). The four fixed rods (63) are sleeved with springs (64), and the four fixed rods (63) are grouped in pairs, and their relatively far ends are respectively fixedly connected to the relatively close ends of the two vertical plates (62). The relatively far ends of the two head clamps (65) are fixedly connected to the connecting plates (66), and the rear ends of the two connecting plates (66) are respectively fixedly connected to the front ends of the two sliding blocks (618). The two threaded rods (612) are movably connected to the rotating sleeve (2) with two guide grooves provided inside through the two guide blocks arranged on the relatively close sides thereof.

7. The head-mounted noise reduction protective device for nuclear magnetic resonance examination according to claim 4, characterized in that: The two noise reduction protection components (7) each include a fixed plate (712), the relatively close ends of the two fixed plates (712) are respectively fixedly connected to the relatively far ends of the two sliding plates (61), the front ends of the two fixed plates (712) are movably connected with threaded rods four (79), the two threaded rods four (79) are respectively threadedly connected to two threaded blocks two (719), the relatively close ends of the two threaded blocks two (719) are respectively fixedly connected to the relatively far ends of the two mounting plates (714), the relatively close ends of the two mounting plates (714) are both fixedly connected with sleeve rods (721), the two sleeve rods (721) are respectively movably connected to the two sliding sleeves (718), and the relatively close ends of the two sleeve rods (721) are both fixedly connected with plug-in blocks (72).

8. The head-mounted noise reduction protective device for nuclear magnetic resonance examination according to claim 7, characterized in that: The two plug-in blocks (72) are both provided with soundproof earplugs (73) through the plug-in slots provided inside the relatively close ends thereof; the two sliding sleeves (718) are respectively fixedly connected to the soundproof earmuffs (75) provided with circular holes inside the relatively far ends; the relatively close ends of the two soundproof earmuffs (75) are both provided with protective cushions (71); the upper ends of the two soundproof earmuffs (75) are both fixedly connected to L-shaped toothed plates (74); the two L-shaped toothed plates (74) are respectively meshed with two gears (78) for transmission; the two gears (78) are respectively fixedly connected to the front ends of two rotating shafts (77); and the middle positions of the two rotating shafts (77) are both movably connected to L-shaped plates (76).

9. The head-mounted noise reduction protective device for nuclear magnetic resonance examination according to claim 8, characterized in that: The relatively far ends of the two L-shaped plates five (76) are respectively fixedly connected to the relatively close ends of the two mounting plates (714), and the upper ends of the two mounting plates (714) are fixedly connected with L-shaped plates six (716). The two L-shaped plates six (716) are movably connected to the upper side light rod parts of the two worm gears two (717) through the connecting holes opened inside the upper ends thereof, and the two worm gears two (717) are respectively meshed with the two worm wheels two (715) for transmission, and the two worm wheels two (715) are respectively fixedly connected to the rear ends of the two rotating shafts two (77), and the two mounting plates (714) are movably connected to the four T-shaped limiting rods two (713) through the two circular holes opened inside them.

10. The head-mounted noise reduction protective device for nuclear magnetic resonance examination according to claim 9, characterized in that: The four T-shaped limiting rods (713) are arranged in pairs, and their relatively close ends are fixedly connected to the relatively far ends of the two soundproof earmuffs (75). The lower sides of the relatively far ends of the two mounting plates (714) are fixedly connected with limiting blocks (720). The two limiting blocks (720) are movably connected to the two T-shaped limiting rods (711). The rear ends of the two T-shaped limiting rods (711) are fixedly connected to the front ends of the two mounting plates (714). The upper sides of the front ends of the two mounting plates (714) are fixedly connected with L-shaped plates (710). The two L-shaped plates (710) are movably connected to the front side light rod parts of the two threaded rods (79) through the connection holes opened inside the front ends.

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