Head fixation hood for nuclear magnetic resonance examinations

Abstract

The utility model relates to medical image auxiliary device field discloses a head fixing cover for nuclear magnetic resonance examination. The fixing cover includes fixed base, head cover, head fixing assembly, buffer gasket and neck support pillow, is equipped with the sliding slot on the fixed base, and the neck support pillow bottom and sliding slot sliding cooperation, the head cover is connected with the fixed base through the pivot, and is equipped with the buckle, the head cover top sets up head fixing assembly, including thread sleeve, threaded column, handle and elastic pressure cap, and the buffer gasket is attached in the head cover inner wall. All structures are made of nonmetal, nonmagnetic material. The structure can realize multidirectional stable positioning to the head, has good adjustability and MRI compatibility, and is suitable for the fixed support of head in the process of nuclear magnetic resonance examination.

Description

Technical Field

[0001] This utility model relates to the field of medical imaging auxiliary devices, and more specifically to a head fixation cover for MRI examination. Background Technology

[0002] Magnetic Resonance Imaging (MRI) is a non-invasive examination method that acquires images of human tissues based on the principle of magnetic resonance. It has significant advantages such as high resolution, wide imaging range, and no radiation, and is widely used in clinical examinations of the nervous system, brain, cervical spine, and other organs throughout the body.

[0003] In head MRI imaging, image clarity and stability are highly dependent on the patient's stillness throughout the scan. However, due to the long examination time and the requirement for a high degree of stillness, even slight tremors, respiratory movements, or involuntary head movements can lead to image artifacts and reduce diagnostic effectiveness. Therefore, head positioning and fixation are crucial auxiliary aspects of MRI examinations.

[0004] In existing technologies, head fixation devices mainly include foam pads, sponge support straps, and simple covers. Although these structures have a certain degree of flexible support, they generally suffer from the following problems: 1. The structural fixing method is simple, and most of them rely solely on static friction contact to cover the head, lacking positive restraining force and unable to effectively suppress vertical displacement; 2. Poor adaptability; lacks an effective adjustable structure and cannot provide precise support when facing patients with different head shapes, neck lengths, or body types. 3. Inconvenient to operate; some devices require manual insertion of the support pad or wrapping with straps, which is time-consuming and laborious, and is not suitable for high-frequency clinical use. 4. Some parts contain metallic or magnetic structural components, which are prone to magnetic field disturbances under strong magnetic field conditions, affecting not only image quality but also posing potential safety risks.

[0005] In addition, some products, although equipped with a top limiting structure, have complicated adjustment methods, are not easy to fix in position, or lack a good cushioning structure, which may cause local pressure discomfort and affect patient compliance.

[0006] Therefore, there is an urgent need to develop a head cover with a reasonable structural design, simple operation, multi-dimensional adjustment capabilities, and made of completely non-metallic and non-magnetic materials to meet the comprehensive requirements of high stability, high adaptability, and high safety in clinical MRI examinations. Utility Model Content

[0007] To address the problems existing in the prior art, this utility model provides a head fixation cover for MRI examination, which has the advantages of reasonable structure, convenient adjustment, and strong MRI compatibility.

[0008] To achieve the above objectives, this utility model provides a head fixation cover for nuclear magnetic resonance imaging (MRI) examination, comprising the following structure: The mounting base, serving as the basic support structure for the entire machine, is installed on the nuclear magnetic resonance equipment. Its upper part is provided with a sliding groove extending in the front-to-back direction to guide the installation of sliding components. The head cover is hinged to the fixed base on one side via a pivot, and has a buckle on the other side. The head cover is a semi-enclosed shell structure that fits the upper, sides and occipital area of ​​the head. The head fixing assembly, located at the top of the headgear, includes a threaded sleeve installed at the middle of the top, a threaded post that can be threadedly connected to the threaded sleeve, a handle located at the upper end of the threaded post, and an elastic pressure cap rotatably connected to the lower end of the threaded post and facing the inside of the headgear. The cushioning pad is attached to the inner wall of the headgear, and has a U-shaped structure, covering the back and sides of the head, with ear avoidance recesses on both sides. The neck support pillow has a sliding structure at the bottom that works with a sliding groove, allowing it to move back and forth along the direction of the groove to adjust its position. The bottom also has a limiting part that works with the positioning structure inside the sliding groove.

[0009] All of the above structural components are made of non-metallic, non-magnetic materials to ensure that they do not generate magnetic interference or safety hazards in the magnetic resonance imaging environment.

[0010] As can be seen from the above technical solution, compared with the prior art, the beneficial effects of this utility model are as follows: (1) Stable structure and reasonable support: Through the coordinated construction of the fixed seat, head cover and neck support pillow, a multi-point support structure for the patient's head is formed, which can effectively limit the movement of the head in all directions during the magnetic resonance imaging process and improve the positioning stability.

[0011] (2) Adjustable: The neck support pillow and the fixed seat are provided with a sliding guide structure, which can move and be positioned in the front and back direction to adapt to the cervical spine position needs of patients with different body types and heights, and enhance the adaptability.

[0012] (3) Reliable top limit: By setting the threaded sleeve, threaded post, handle and elastic pressure cap on the top of the headgear, a liftable limit component is constructed to provide flexible support for the top of the head and improve the overall stability of the head.

[0013] (4) Combining fit and comfort: The cushioning pad covers both sides and the back of the head, adopts a U-shaped structure, and is filled with flexible material to fit the contour of the human body, effectively relieving local pressure and improving comfort during the examination.

[0014] (5) Easy to load and unload: The head cover is connected to the fixed base through a rotating shaft, which can be flipped open and is equipped with a buckle structure, making it easy for patients to enter and exit the examination position, simplifying the operation process and improving the efficiency of clinical use.

[0015] (6) Fully MRI compatible: All components of this device are made of non-metallic and non-magnetic materials, which will not interfere with the magnetic resonance system. It is suitable for medical imaging examinations in high magnetic field environments and has strong safety and adaptability. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is a first-view perspective view of the three-dimensional structure of this utility model.

[0018] Figure 2 This is a second perspective view of the three-dimensional structure of this utility model.

[0019] 1-Fixed base, 101-Slide groove, 2-Head cover, 201-Rotating shaft, 202-Snap fastener, 3-Threaded sleeve, 301-Threaded post, 302-Handle, 303-Elastic pressure cap, 4-Buffer pad, 5-Neck support pillow. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example

[0022] A head-fixing cover for MRI scans, such as Figure 1 and Figure 2 As shown, the device includes a mounting base 1, a head cover 2, a head fixation assembly, a cushioning pad 4, and a neck support pillow 5. The entire device is made of non-metallic, non-magnetic materials and is suitable for magnetic resonance imaging environments.

[0023] The fixed base 1 is a bottom support structure, and its upper surface is provided with a sliding groove 101 extending in the front-to-back direction. The sliding groove 101 has a U-shaped cross-section to limit the movement path of the sliding component. The sliding groove 101 has a stepped or hole-type positioning structure inside.

[0024] The neck support pillow 5 has a sliding structure, such as a slider or a raised strip, at its bottom that matches the slide groove 101, and can slide back and forth longitudinally within the slide groove 101. After the neck support pillow 5 slides to the appropriate position, it can be fixed in the corresponding positioning hole by means of a buckle, pin, or knob, thereby improving overall stability. The neck support pillow 5 has an arc shape to conform to the lower contour of the neck.

[0025] The head cover 2 is a one-piece semi-enclosed structure with an arched top, an opening at the front, and ear recesses on both sides. The cover is hinged to the fixing base 1 via a pivot 201 and has a flip-up function to facilitate the insertion and removal of the patient's head. In the closed state, it is locked to the fixing base 1 by a buckle 202.

[0026] The top of the headgear 2 is equipped with a head-fixing assembly, including: Threaded sleeve 3 installed on the top of the cover; Insert the threaded post 301 into the threaded sleeve 3; A handle 302 is connected to the upper end of the threaded post 301; The elastic pressure cap 303 is installed at the lower end of the threaded post 301.

[0027] By rotating the handle 302, the threaded post 301 moves up and down within the threaded sleeve 3, thereby adjusting the elastic pressure cap 303 in the vertical direction. The elastic pressure cap 303 is connected to the threaded post 301 via a ball joint or flexible connection structure and is positioned towards the inside of the head cover 2, forming a spherical buffer structure.

[0028] The inner wall of the headgear 2 is fitted with cushioning pads 4, which are U-shaped and cover the sides and back of the head. The cushioning pads 4 are made of soft materials such as memory foam, and have recessed areas on both sides to avoid the patient's ear area, thus improving the fit.

[0029] In use, the operator adjusts the position of the neck support pillow 5 in the slide 101 according to the patient's height and head position, so that it supports the lower part of the patient's neck according to the curve of the neck, and locks the position through the slide positioning structure.

[0030] Subsequently, the head cover 2 is rotated around the pivot 201 to the closed position, and the structure is closed by the buckle 202 and the fixing seat 1. The patient's head is covered inside the head cover 2, with the front of the face exposed.

[0031] The operator rotates the handle 302 to raise or lower the threaded column 301 according to the height of the patient's head, so that the elastic pressure cap 303 contacts downward and applies a gentle vertical limiting force to form a top constraint.

[0032] The sides and back of the patient's head are covered and supported by cushioning pads 4, which fit snugly and securely. The ear avoidance area provides extra space to avoid pressure and interference.

[0033] Because all structures of this device are made of non-metallic, non-magnetic materials, it will not produce magnetic interference even when used in a strong magnetic field MRI environment, thus ensuring image quality and personnel safety.

[0034] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A headrest cover for nuclear magnetic resonance imaging (MRI) examination, characterized in that, Including: Fixed base (1), the fixed base is provided with a sliding groove (101) extending in the front-back direction; The head cover (2) is set on the fixed base. One side of the head cover is connected to the fixed base through a pivot (201), and the other side of the head cover (2) is provided with a buckle (202). The head fixing assembly includes a threaded sleeve (3), a threaded post (301), a handle (302), and an elastic pressure cap (303) fixed to the top of the head cover (2). The threaded post (301) is threadedly connected to the threaded sleeve (3), and the elastic pressure cap (303) is disposed at the lower end of the threaded post (301). The handle (302) is disposed at the upper end of the threaded post (301), and the elastic pressure cap (303) is rotatably connected to the lower end of the threaded post (301). The elastic pressure cap (303) is disposed facing the inside of the head cover (2). A cushioning pad (4) is attached to the inner wall of the headgear (2); A neck support pillow (5) is set on a fixed base (1). The bottom of the neck support pillow (5) slides in conjunction with the slide groove (101) and moves along the slide groove (101) to adjust the position of the pillow.

2. The head fixation cover for MRI examination according to claim 1, characterized in that: The neck support pillow (5) has a limiting part at the bottom and a matching positioning structure in the slide groove (101) to keep the neck support pillow (5) in a preset position.

3. The head fixation cover for MRI examination according to claim 1, characterized in that: The cushioning pad (4) is a detachable structure that covers the pillow and side areas of the inner wall of the hood.

4. The head fixation cover for MRI examination according to claim 1, characterized in that: The buffer pad (4) has a U-shaped structure with recessed areas on both sides.

5. The headrest cover for MRI examination according to any one of claims 1-4, characterized in that: The entire head cover is made of non-metallic, non-magnetic materials.

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