Auxiliary device for nuclear magnetic resonance head imaging

Abstract

The utility model discloses an auxiliary device for nuclear magnetic resonance head imaging, and relates to the technical field of nuclear magnetic resonance examination auxiliary equipment, the auxiliary device comprises a head supporting seat, a limiting rail groove and an auxiliary limiting assembly, the auxiliary limiting assembly is used for fixing and limiting the head of a patient; the auxiliary limiting assembly comprises a limiting unit and a locking unit; the limiting unit is used for limiting the jaw of the patient, so that the head of the patient cannot move; the locking unit is used for limiting and locking rotation and up-down movement adjustment of the limiting unit; the fixing unit is used for locking the horizontal movement of the limiting unit and providing power and limiting for the horizontal movement of the locking unit. By arranging the auxiliary limiting assembly, the jaw of a patient can be limited, so that the head of the patient is fixed, the operation is simple and convenient, the head area of the patient cannot be shielded, and head examination is clearer.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear magnetic resonance examination auxiliary equipment, in particular to an auxiliary device for nuclear magnetic resonance head imaging. Background Art

[0002] Magnetic resonance imaging (MR) is a biological magnetic spin imaging technology that utilizes the characteristics of atomic nucleus spin motion. In an external magnetic field, it generates signals after being stimulated by radio frequency pulses. The signals are detected by detectors and input into computers. After being processed and converted, images are displayed on the screen. It has great potential advantages in the diagnosis of diseases. It can directly produce tomographic images in cross sections, sagittal planes, coronal planes, and various oblique planes without producing artifacts found in CT detection. It has no ionizing radiation and has no adverse effects on the body. MR is very effective in detecting common brain diseases such as intracerebral hematoma, extracerebral hematoma, brain tumors, intracranial aneurysms, arteriovenous malformations, cerebral ischemia, intraspinal tumors, syringomyelia, and hydromyelia.

[0003] When performing an MRI examination of the head, it is usually necessary to keep the head still during the examination to facilitate better structural imaging. However, MRI examinations usually produce a lot of noise, which can cause discomfort to the human body and subconscious movement of the body, which can easily cause the head to move, and may require re-examination, seriously affecting the patient's treatment progress. Therefore, when examining the head, it is necessary to fix the patient's head with external auxiliary equipment. Based on this, an auxiliary device for MRI head imaging is provided. Utility Model Content

[0004] The purpose of the utility model is to provide an auxiliary device for nuclear magnetic resonance head imaging in order to solve the above-mentioned problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an auxiliary device for nuclear magnetic resonance head imaging, comprising a head support seat for supporting and positioning a patient's head, a limiting rail groove is provided on one side of the top of the head support seat, an auxiliary limiting assembly is provided on the inner side of the limiting rail groove, and the auxiliary limiting assembly is used to fix and limit the patient's head;

[0006] The auxiliary limiting assembly includes a limiting unit, a locking unit, and a fixing unit;

[0007] The limiting unit is used to limit the chin of the patient, so that the patient's head cannot move;

[0008] The locking unit is used to limit and lock the rotation and up and down movement adjustment of the limiting unit;

[0009] The fixing unit is used to lock the horizontal movement of the limiting unit and to provide power and limit the horizontal movement of the locking unit.

[0010] As a further solution of the utility model: the limiting unit includes a horizontal slide, a vertical hole slot, a rotating column, a limiting plate, and a chin positioning hole;

[0011] The horizontal slide is horizontally slidably connected to the inner side of the limit rail groove, the vertical hole groove is opened at one end of the top of the horizontal slide, the rotating column is vertically slidably and rotatably connected to the inner side of the vertical hole groove, the limit plate is fixed to the top of the rotating column and is distributed at a vertical angle to the rotating column, and the chin positioning hole passes through both ends of the outer wall of the limit plate;

[0012] When the patient lies flat with his head located inside the head support seat, the limiting plate rotates around the rotating column so that the chin positioning hole fits the patient's chin, thereby limiting the swing of the patient's head.

[0013] As a further solution of the utility model: the locking unit includes a vertical circular groove, a horizontal ring groove, a movable card seat, a rotating locking block, a lifting locking block, a trapezoidal pressure block, and a limit slider;

[0014] The vertical circular groove is vertically opened on the outer side of the rotating column, and the horizontal annular groove is horizontally opened on the outer side of the rotating column. The vertical circular groove and the horizontal annular groove penetrate each other and are vertically distributed;

[0015] The limit slider is fixed to the bottom of the movable card seat, the top of the horizontal slide seat is provided with a limit slide groove, the limit slide groove is distributed at one end of the vertical hole groove, the limit slider is slidably connected to the inner side of the limit slide groove, and the movable card seat is distributed on the upper surface of the horizontal slide seat;

[0016] The rotating locking block and the lifting locking block are fixed to one end of the movable base close to the rotating column, and the rotating locking block and the lifting locking block are vertically distributed to each other;

[0017] The rotating column moves horizontally along the track of the limiting slide groove through the limiting slider to approach the rotating column, so that the rotating locking block is engaged with the vertical circular groove, and the lifting locking block is engaged with the horizontal ring groove;

[0018] The rotation locking of the rotating column is achieved by the engagement of the rotating locking block with the vertical circular groove.

[0019] The up and down movement of the rotating column is locked by the clamping connection between the lifting locking block and the horizontal ring groove;

[0020] The trapezoidal pressing block is fixed to the top of one end of the rotating column away from the vertical hole groove.

[0021] As a further solution of the utility model: the fixing unit includes a threaded hole, a stud, and an extrusion knob;

[0022] The threaded hole is opened at the top of the horizontal slide and penetrates to the bottom of the horizontal slide, and the threaded hole is distributed at one end of the limiting slide away from the vertical hole groove;

[0023] The stud is threadedly connected to the inner side of the threaded hole, and the horizontal position of the horizontal slide is fixed by the close fit between the bottom of the stud and the bottom of the inner wall of the limiting rail groove;

[0024] The extrusion knob is fixed to the top of the stud and fits with the inclined end surface of the trapezoidal pressing block. The trapezoidal pressing block is squeezed by moving the extrusion knob downward to give it a horizontal thrust, which is used to provide power for the locking unit and the locking.

[0025] As a further solution of the utility model: a plurality of the vertical circular grooves are provided, and the plurality of the vertical circular grooves are evenly distributed in a circumference; a plurality of the horizontal annular grooves are provided, and the plurality of the horizontal annular grooves are evenly distributed along the vertical direction.

[0026] As a further solution of the utility model: the head support seat, the limiting rail groove, and the auxiliary limiting assembly are all made of non-metallic materials, the side of the chin positioning hole close to the human chin is a trumpet-mouth structure, and a soft breathable pad is pasted on the inner side of the chin positioning hole.

[0027] Compared with the prior art, the beneficial effects of the utility model are:

[0028] By setting an auxiliary limiting component, the patient's chin can be limited, thereby achieving a fixed operation on the patient's head. The operation is simple and convenient, and will not block the patient's head area, making the head examination clearer. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the utility model;

[0030] Figure 2 It is a structural schematic diagram of the state in which the limit plate of the utility model rotates to the front end of the head support seat;

[0031] Figure 3 This is a side structural sectional view of the head support seat of the utility model;

[0032] Figure 4 It is a cross-sectional exploded view of the auxiliary limiting component of the utility model.

[0033] In the figure: 1. head support seat; 2. limit rail groove; 3. auxiliary limit assembly; 301. horizontal slide seat; 302. vertical hole groove; 303. rotating column; 304. limit plate; 305. chin positioning hole; 306. locking unit; 3061. vertical circular groove; 3062. horizontal ring groove; 3063. movable card seat; 3064. rotating locking block; 3065. lifting locking block; 3066. trapezoidal pressure block; 3067. limit slider; 307. limit slide groove; 308. threaded hole; 309. stud; 310. extrusion knob. DETAILED DESCRIPTION

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

[0035] See also Figures 1 to 4 In an embodiment of the utility model, an auxiliary device for nuclear magnetic resonance head imaging includes a head support seat 1 for supporting and positioning a patient's head, a limiting rail groove 2 is provided on one side of the top of the head support seat 1, an auxiliary limiting assembly 3 is provided on the inner side of the limiting rail groove 2, and the auxiliary limiting assembly 3 is used to fix and limit the patient's head;

[0036] The auxiliary limiting assembly 3 includes a limiting unit, a locking unit 306, and a locking unit; the fixing unit is used to limit the chin of the patient, so that the patient's head cannot move; the locking unit 306 is used to limit and lock the rotation and up and down movement adjustment of the limiting unit; the fixing unit is used to lock the horizontal movement of the limiting unit and provide power and limit for the horizontal movement of the locking unit 306;

[0037] The limiting unit includes a horizontal slide 301, a vertical hole slot 302, a rotating column 303, a limiting plate 304, and a chin positioning hole 305;

[0038] The horizontal slide 301 is horizontally slidably connected to the inner side of the limiting rail groove 2, the vertical hole groove 302 is opened at one end of the top of the horizontal slide 301, the rotating column 303 is vertically slidably and rotatably connected to the inner side of the vertical hole groove 302, the limiting plate 304 is fixed to the top of the rotating column 303 and is distributed at a vertical angle to the rotating column 303, and the chin positioning hole 305 passes through both ends of the outer wall of the limiting plate 304; when the patient lies flat and his head is located inside the head support seat 1, the limiting plate 304 rotates around the rotating column 303 as the center so that the chin positioning hole 305 fits the patient's chin, thereby realizing the swing limit of the patient's head;

[0039] The locking unit 306 includes a vertical circular groove 3061, a horizontal annular groove 3062, a movable card seat 3063, a rotating locking block 3064, a lifting locking block 3065, a trapezoidal pressing block 3066, and a limiting slider 3067;

[0040] The vertical circular groove 3061 is vertically opened on the outer side of the rotating column 303, and the horizontal annular groove 3062 is horizontally opened on the outer side of the rotating column 303. The vertical circular groove 3061 and the horizontal annular groove 3062 are mutually interpenetrating and vertically distributed; the limiting slider 3067 is fixed to the bottom of the mobile card seat 3063, and the top of the horizontal slide 301 is provided with a limiting slide groove 307, and the limiting slide groove 307 is distributed at one end of the vertical hole groove 302. The limiting slider 3067 is slidably connected to the inner side of the limiting slide groove 307, and the mobile card seat 3063 is distributed on the upper surface of the horizontal slide 301; the rotating locking block 3064 and the lifting locking block 3065 are fixed to the mobile card seat 3063 near the rotating column 303 One end, and the rotation locking block 3064 and the lifting locking block 3065 are vertically distributed to each other; the rotation column 303 moves horizontally along the track of the limiting slide groove 307 through the limiting slider 3067 to approach the rotation column 303, so that the rotation locking block 3064 is engaged with the vertical circular groove 3061, and the lifting locking block 3065 is engaged with the horizontal ring groove 3062; the rotation locking of the rotation column 303 is achieved by the engagement of the rotation locking block 3064 with the vertical circular groove 3061, and the up and down movement locking of the rotation column 303 is achieved by the engagement of the lifting locking block 3065 with the horizontal ring groove 3062; the trapezoidal pressing block 3066 is fixed to the top of one end of the rotation column 303 away from the vertical hole groove 302;

[0041] The fixing unit includes a threaded hole 308, a stud 309, and a squeeze knob 310;

[0042] The threaded hole 308 is opened at the top of the horizontal slide 301 and passes through the bottom of the horizontal slide 301. The threaded hole 308 is distributed at the end of the limiting slide groove 307 away from the vertical hole groove 302; the stud 309 is threadedly connected to the inner side of the threaded hole 308, and the horizontal position of the horizontal slide 301 is fixed by the close fit between the bottom of the stud 309 and the bottom of the inner wall of the limiting rail groove 2; the squeezing knob 310 is fixed to the top of the stud 309 and fits with the inclined end face of the trapezoidal pressure block 3066. The trapezoidal pressure block 3066 is squeezed by moving the squeezing knob 310 downward to give it a horizontal thrust, which is used to provide power for the locking unit 306 and the locking.

[0043] In this embodiment: it should be supplemented that: the head support seat 1 is placed and fixed on the MRI examination bed. When the patient lies flat on the examination bed, the patient's head is located inside the head support seat 1. The arc structure inside the head support seat 1 makes the patient's head located in the middle of the head support seat 1.

[0044] After the patient lies down, the limit plate 304 can be rotated to the front end of the head support seat 1 (it should be supplemented that: at this time, the stud 309 is not completely tightened, and the squeezing knob 310 does not squeeze the trapezoidal pressing block 3066, that is, at this time, the horizontal slide 301 and the movable clamping seat 3063 can easily move horizontally, and the movable clamping seat 3063 will not lock the up and down movement and rotation of the rotating column 303). At this time, the limit plate 304 will drive the rotating column 303 to rotate synchronously. When the limit plate 304 is close to the patient's chin, the height of the limit plate 304 can be adjusted according to the patient's chin height, so that the chin positioning hole 305 is aligned with the patient's chin;

[0045] It should be supplemented that: when the limiting plate 304 rotates to the front end of the head support seat 1, the chin positioning hole 305 is exactly located on the central axis of the head support seat 1, and the patient's head is located in the middle of the head support seat 1, so at this time, the chin positioning hole 305 is aligned with the patient's chin in the horizontal direction;

[0046] Then, the horizontal slide 301 is pushed to move horizontally, so that the limit plate 304 is close to the patient's chin, and finally, the chin positioning hole 305 is sleeved on the outer side of the patient's chin;

[0047] After that, the squeezing knob 310 is turned, and the squeezing knob 310 drives the stud 309 to rotate and tighten, and the stud 309 moves downward along the threaded hole 308 and fits tightly with the bottom of the inner wall of the limiting rail groove 2, so as to fix the horizontal slide seat 301. At the same time, the squeezing knob 310 moves downward synchronously to squeeze the trapezoidal pressing block 3066, and the trapezoidal pressing block 3066 moves horizontally under this squeezing force, and pushes the moving clamping seat 3063 to move toward the rotating column 303, and finally the end face of the moving clamping seat 3063 fits with the outer side of the rotating column 303, and at this time, the rotating locking block 3064 is engaged with the vertical circular groove 3061, and the lifting locking block 3065 is engaged with the horizontal annular groove 3062, so that the rotating column 303 cannot be rotated and moved up and down, that is, the position of the limiting plate 304 is fixed, so that the patient's head is fixed;

[0048] If the fixation of the patient's head needs to be released, it is only necessary to reversely loosen the stud 309, and then rotate the limit plate 304 away from the patient. It should be noted that the end surfaces of the rotation locking block 3064 and the lifting locking block 3065 are both arc-shaped structures, so they will not affect the rotation of the rotating column 303;

[0049] Through the coordination of the above multiple parts, the patient's chin can be limited, thereby achieving a fixed operation on the patient's head. The operation is simple and convenient, and will not block the patient's head area, making the head examination clearer.

[0050] Please refer to Figures 1 to 4There are multiple vertical circular grooves 3061, which are evenly distributed in a circle. There are multiple horizontal annular grooves 3062, which are evenly distributed in the vertical direction.

[0051] In this embodiment: this structure can realize the position locking of the rotating column 303 at different rotation angles and heights, so that the position of the limiting plate 304 can adapt to the chin position of different patients, making the device more versatile.

[0052] Please refer to Figures 1 to 4 The head support seat 1, the limiting rail groove 2, and the auxiliary limiting component 3 are all made of non-metallic materials. The side of the chin positioning hole 305 close to the human chin is a trumpet-shaped structure, and a soft breathable pad is pasted on the inner side of the chin positioning hole 305.

[0053] In this embodiment: this structure ensures that the device as a whole will not interfere with the MRI examination, thereby ensuring the safety of the examination. At the same time, the trumpet-mouth structure of the chin positioning hole 305 can adapt to chins of different sizes, and the comfort is ensured by the soft breathable pad. It should also be noted that a soft breathable pad is also pasted on the inner side of the head support seat 1.

[0054] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An auxiliary device for magnetic resonance imaging of the head, comprising a head support seat (1) for supporting and positioning a patient's head, characterized in that: A limiting rail groove (2) is provided on one side of the top of the head support seat (1), an auxiliary limiting assembly (3) is provided on the inner side of the limiting rail groove (2), and the auxiliary limiting assembly (3) is used to fix and limit the patient's head; The auxiliary limiting assembly (3) comprises a limiting unit, a locking unit (306), and a fixing unit; The limiting unit is used to limit the chin of the patient, so that the patient's head cannot move; The locking unit (306) is used to perform limit locking for the rotation and up and down movement adjustment of the limit unit; The fixing unit is used to lock the horizontal movement of the limiting unit and to provide power and limit the horizontal movement of the locking unit (306); The limiting unit comprises a horizontal slide seat (301), a vertical hole slot (302), a rotating column (303), a limiting plate (304), and a chin positioning hole (305); The horizontal slide seat (301) is horizontally slidably connected to the inner side of the limiting rail groove (2); the vertical hole groove (302) is opened at one end of the top of the horizontal slide seat (301); the rotating column (303) is vertically slidably and rotatably connected to the inner side of the vertical hole groove (302); the limiting plate (304) is fixed to the top of the rotating column (303) and is distributed at a vertical angle to the rotating column (303); and the chin positioning hole (305) passes through both ends of the outer wall of the limiting plate (304); When the patient lies flat with his head inside the head support seat (1), the limiting plate (304) rotates around the rotating column (303) so that the chin positioning hole (305) fits the patient's chin, thereby limiting the swing of the patient's head; The locking unit (306) comprises a vertical circular groove (3061), a horizontal annular groove (3062), a movable clamping seat (3063), a rotating locking block (3064), a lifting locking block (3065), a trapezoidal pressing block (3066), and a limiting sliding block (3067); The vertical circular groove (3061) is vertically opened on the outer side of the rotating column (303), and the horizontal annular groove (3062) is horizontally opened on the outer side of the rotating column (303). The vertical circular groove (3061) and the horizontal annular groove (3062) penetrate each other and are vertically distributed. The limit slider (3067) is fixed to the bottom of the movable card seat (3063), the top of the horizontal slide seat (301) is provided with a limit slide groove (307), the limit slide groove (307) is distributed at one end of the vertical hole groove (302), the limit slider (3067) is slidably connected to the inner side of the limit slide groove (307), and the movable card seat (3063) is distributed on the upper surface of the horizontal slide seat (301); The rotating locking block (3064) and the lifting locking block (3065) are fixed to one end of the movable clamping seat (3063) close to the rotating column (303), and the rotating locking block (3064) and the lifting locking block (3065) are arranged perpendicularly to each other; The rotating column (303) is horizontally moved along the track of the limiting sliding groove (307) by the limiting sliding block (3067) to approach the rotating column (303), so that the rotating locking block (3064) and the vertical circular groove (3061) and the lifting locking block (3065) and the horizontal annular groove (3062) are engaged; The rotation locking of the rotating column (303) is achieved by engaging the rotating locking block (3064) with the vertical circular groove (3061). The vertical movement locking of the rotating column (303) is achieved by the clamping connection between the lifting locking block (3065) and the horizontal ring groove (3062); The trapezoidal pressing block (3066) is fixed to the top of one end of the rotating column (303) away from the vertical hole groove (302); The fixing unit comprises a threaded hole (308), a stud (309), and a pressing knob (310); The threaded hole (308) is opened at the top of the horizontal slide seat (301) and penetrates to the bottom of the horizontal slide seat (301), and the threaded hole (308) is distributed at one end of the limiting slide groove (307) away from the vertical hole groove (302); The stud (309) is threadedly connected to the inner side of the threaded hole (308), and the horizontal position of the horizontal slide seat (301) is fixed by the close fit between the bottom of the stud (309) and the bottom of the inner wall of the limiting rail groove (2); The squeezing knob (310) is fixed to the top of the stud (309) and fits with the inclined end surface of the trapezoidal pressing block (3066). The squeezing knob (310) is moved downward to squeeze the trapezoidal pressing block (3066) to give it a horizontal thrust, which is used to provide power for the locking unit (306) and the locking.

2. The auxiliary device for MRI head imaging according to claim 1, characterized in that: A plurality of the vertical circular grooves (3061) are provided, and the plurality of the vertical circular grooves (3061) are evenly distributed in a circumference; a plurality of the horizontal annular grooves (3062) are provided, and the plurality of the horizontal annular grooves (3062) are evenly distributed in a vertical direction.

3. The auxiliary device for magnetic resonance imaging of the head according to claim 2, characterized in that: The head support seat (1), the limiting rail groove (2), and the auxiliary limiting assembly (3) are all made of non-metallic materials. The side of the chin positioning hole (305) close to the human chin is in a trumpet-shaped structure, and a soft breathable pad is pasted on the inner side of the chin positioning hole (305).

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