Head support for MRI examinations

Abstract

The utility model relates to MRI inspection technical field, concretely is a kind of MRI examination head support;The utility model MRI examination head support, including clamping plate, the opposite side of two groups of clamping plate is equipped with a group of first sliding slot, the first sliding slot is provided with sliding plate, the opposite side of two groups of sliding plate is provided with a group of second air bag pad;The utility model, by rotating second hand wheel and driving two groups of clamping plate to move inward, the head of patient is centered clamped, to ensure that the head of patient is in the process of MRI examination cranium median sagittal plane and the coil longitudinal axis of MRI machine keep consistent and perpendicular to bed surface, simultaneously using the self-locking of worm wheel and worm, the clamping stability of clamping plate can be guaranteed, make head keep stable in the process of examination, by rotating first hand wheel, the up-down position height of second air bag pad can be changed, the device can adapt to patient with different head size, make the avoidance groove can be more accurate to the ear of patient.

Description

Technical Field

[0001] This utility model relates to the field of MRI examination technology, specifically an MRI examination head support. Background Technology

[0002] MRI (Magnetic Resonance Imaging) is a non-invasive medical imaging technique used to examine the internal structures and functions of the human body. During a cranial MRI examination, the patient needs to lie supine with their head first, ensuring that the midsagittal plane of the skull is aligned as closely as possible with the longitudinal axis of the MRI coil and perpendicular to the bed surface, with the glabella centered on the transverse axis of the coil. Additionally, soft pads are placed on both sides of the patient's head to ensure stability during the examination. However, even with these pads, reliable head fixation is not guaranteed. This is because the patient may move their head during the examination, leading to blurred or distorted images. This not only affects diagnostic results but also increases examination time and cost.

[0003] To address this issue, various types of head immobilization devices have been disclosed in related technologies. These devices include adjustable headrests, immobilization rods, side immobilization straps, and top immobilization straps. While these devices offer relatively better head immobilization, they still have some drawbacks, such as poor adaptability to different patients, cumbersome head immobilization procedures, the risk of pressure injury to the head, and poor comfort. To address these issues, technological innovations are proposed based on existing MRI examination head supports. Utility Model Content

[0004] The purpose of this invention is to provide an MRI head support to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an MRI examination head support, comprising:

[0006] The clamping plates have a first sliding groove on each of the two sets of clamping plates, and a sliding plate is provided in the first sliding groove. A second airbag is provided on each of the two sets of sliding plates, and a clearance groove is provided on each of the two sets of second airbags. The top of the sliding plate has a mounting hole, and the inner wall of the mounting hole has an annular limiting groove. The top of the first sliding groove has a threaded hole, and a screw is provided in the mounting hole. The outer ring of the screw has a limiting ring, which is located in the annular limiting groove. The screw is screwed into the threaded hole.

[0007] Preferably, a first handwheel is provided at the top of the screw, the first handwheel is located above the clamping plate, and two sets of notches are evenly provided on the left side of the clamping plate, the notches penetrating the bottom of the clamping plate.

[0008] Preferably, a base plate is placed at the bottom of the two sets of clamping plates, and two sets of first airbags are evenly arranged on the top of the base plate, with the first airbags located within the notches of the clamping plates.

[0009] Preferably, a second sliding groove is provided through the top of the base plate, and fixing holes are uniformly provided through the top of the base plate. A bidirectional lead screw is provided in the second sliding groove, and two sets of internal thread sliders are uniformly screwed to the outer side wall of the bidirectional lead screw. The clamping plate is provided on the top of the internal thread sliders.

[0010] Preferably, the left side of the bidirectional lead screw passes through the left side of the base plate and is connected to a worm gear. A worm is engaged at the top of the worm gear, and a second handwheel is provided at the rear side of the worm.

[0011] Preferably, two sets of bearing seats are evenly arranged on the left side of the base plate, and the two sets of bearing seats are evenly arranged on the outer ring of the worm gear.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention improves the comfort of the patient's head when it contacts the base plate through the first airbag cushion, improves the comfort of the head when it is held by the clamping plate through the second airbag cushion, and prevents the second airbag cushion from squeezing the patient's ears through the avoidance groove.

[0014] By rotating the second handwheel, the two sets of clamping plates are moved inward to centrally clamp the patient's head. This ensures that the midsagittal plane of the patient's skull is aligned with the longitudinal axis of the MRI machine's coil and perpendicular to the bed surface during the MRI examination. At the same time, the self-locking property of the worm gear and worm shaft ensures the clamping stability of the clamping plates, keeping the head stable during the examination. By rotating the first handwheel, the vertical position of the second airbag can be changed, allowing the device to adapt to patients with different head sizes and enabling the clearance groove to be more accurately aligned with the patient's ear. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an MRI examination head support according to the present invention;

[0016] Figure 2 This is a rear view of an MRI examination head support according to the present invention.

[0017] Figure 3 This is a front sectional view of an MRI examination head support according to the present invention.

[0018] In the diagram: 1. Base plate; 11. First airbag cushion; 12. Fixing hole; 13. Clamping plate; 14. First handwheel; 15. Slide plate; 16. Second airbag cushion; 17. Clearance groove; 18. Screw; 19. Limiting ring; 2. Two-way lead screw; 21. Worm gear; 22. Worm; 23. Second handwheel; 24. Bearing seat; 3. Internal threaded slider. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-3An MRI head support includes clamping plates 13. Each of the two clamping plates 13 has a first sliding groove on its opposite sides. A sliding plate 15 is slidably disposed within the first sliding groove. Each of the two sliding plates 15 has a second airbag 16 on its opposite sides. Each of the two second airbag 16 has a clearance groove 17 on its opposite sides. A mounting hole is provided at the top of the sliding plate 15. An annular limiting groove is provided on the inner wall of the mounting hole. A threaded hole is provided through the top of the first sliding groove. A screw 18 is rotatably disposed within the mounting hole. A limiting ring 19 is fixedly disposed around the outer ring of the screw 18. The limiting ring 19 is rotatably disposed within the annular limiting groove. 8 is screwed into the threaded hole. A first handwheel 14 is fixedly installed on the top of the screw 18. By rotating the first handwheel 14, the screw 18 is driven to rotate. When the screw 18 rotates in the threaded hole of the clamping plate 13, it will pull the slide plate 15 upward through the limit ring 19, thereby driving the second airbag pad 16 on the outside of the slide plate 15 to move synchronously. The first handwheel 14 is located above the clamping plate 13. Two sets of notches are evenly opened through the left side of the clamping plate 13. The notches penetrate through the bottom of the clamping plate 13. A base plate 1 is placed at the bottom of the two sets of clamping plates 13. Two sets of first airbag pads 11 are evenly fixed on the top of the base plate 1. 11 is located within the notch of the clamping plate 13. A second sliding groove is formed through the top of the base plate 1. Fixing holes 12 are uniformly formed through the top of the base plate 1. Bolt holes are made in the MRI examination table, and plastic bolts are screwed through the fixing holes 12 and into the bolt holes to fix the base plate 1 to the MRI examination table. When the patient lies on the MRI examination table with their head on the base plate 1, the first airbag 11 can improve the comfort of the patient's head when in contact with the base plate 1. A bidirectional lead screw 2 is rotatably installed in the second sliding groove. Two sets of internally threaded sliders 3 are uniformly screwed onto the outer wall of the bidirectional lead screw 2. The clamping plate 13 is fixedly installed. At the top of the internal threaded slider 3, the left side of the bidirectional lead screw 2 passes through the left side of the base plate 1 and is connected to a worm wheel 21. The top of the worm wheel 21 is engaged with a worm 22. A second handwheel 23 is fixedly installed on the rear side of the worm 22. By rotating the second handwheel 23, the worm 22 is driven to rotate, which in turn drives the worm wheel 21 to rotate. The worm wheel 21 drives the two sets of internal threaded sliders 3 to move inward through the bidirectional lead screw 2, thereby driving the two sets of clamping plates 13 to move inward. Two sets of bearing seats 24 are evenly fixedly installed on the left side of the base plate 1. The two sets of bearing seats 24 are evenly rotated on the outer ring of the worm 22, supporting the rotation of the worm 22.

[0021] Working principle: Bolt holes are made in the MRI examination table, and plastic bolts are screwed through the fixing holes 12 to fix the base plate 1 to the MRI examination table. When the patient lies on the MRI examination table with the patient's head on the base plate 1, the first airbag cushion 11 can improve the comfort of the patient's head when in contact with the base plate 1. By rotating the second handwheel 23, the worm gear 22 is rotated, which in turn drives the worm wheel 21 to rotate. The worm wheel 21 drives the two sets of internal threaded sliders 3 to move inward through the bidirectional lead screw 2, which in turn drives the two sets of clamping plates 13 to move inward to clamp the patient's head in a centered position. This ensures that the midsagittal plane of the patient's head is aligned with the longitudinal axis of the MRI machine coil and perpendicular to the table surface during the MRI examination. Simultaneously, the self-locking property of the worm gear 21 and worm 22 ensures the clamping stability of the clamping plate 13, keeping the head stable during the examination. The second airbag 16 improves the comfort of the head when clamped by the clamping plate 13, and the clearance groove 17 prevents the second airbag 16 from squeezing the patient's ear. By rotating the first handwheel 14, the screw 18 is driven to rotate. When the screw 18 rotates in the threaded hole of the clamping plate 13, it will pull the slide plate 15 upward through the limit ring 19, thereby driving the second airbag 16 on the outside of the slide plate 15 to move synchronously. By changing the vertical position of the second airbag 16, the device can be adapted to patients with different head sizes, and the clearance groove 17 can be more accurately aligned with the patient's ear.

Claims

1. A head support for MRI examination, characterized in that, include: Clamping plates (13), each of the two sets of clamping plates (13) has a first sliding groove on its opposite side, a sliding plate (15) is provided in the first sliding groove, a second airbag cushion (16) is provided on its opposite side, a clearance groove (17) is provided on its opposite side, a mounting hole is provided on the top of the sliding plate (15), an annular limiting groove is provided on the inner side wall of the mounting hole, a threaded hole is provided through the top of the first sliding groove, a screw (18) is provided in the mounting hole, a limiting ring (19) is provided on the outer ring of the screw (18), the limiting ring (19) is provided in the annular limiting groove, and the screw (18) is screwed into the threaded hole.

2. The MRI head support according to claim 1, characterized in that: The screw (18) is provided with a first handwheel (14) at the top. The first handwheel (14) is located above the clamping plate (13). Two sets of notches are evenly opened on the left side of the clamping plate (13). The notches penetrate the bottom of the clamping plate (13).

3. The MRI head support according to claim 2, characterized in that: A base plate (1) is placed at the bottom of the two sets of clamping plates (13), and two sets of first airbag cushions (11) are evenly arranged on the top of the base plate (1). The first airbag cushions (11) are located in the notch of the clamping plate (13).

4. The MRI head support according to claim 3, characterized in that: The top of the base plate (1) is provided with a second sliding groove, and the top of the base plate (1) is provided with a fixing hole (12) evenly. A bidirectional lead screw (2) is provided in the second sliding groove, and two sets of internal thread sliders (3) are evenly screwed to the outer wall of the bidirectional lead screw (2). The clamping plate (13) is provided on the top of the internal thread slider (3).

5. The MRI head support according to claim 4, characterized in that: The left side of the bidirectional lead screw (2) passes through the left side of the base plate (1) and is connected to a worm gear (21). The top of the worm gear (21) is engaged with a worm (22), and a second handwheel (23) is provided on the rear side of the worm (22).

6. The MRI head support according to claim 5, characterized in that: Two sets of bearing seats (24) are evenly arranged on the left side of the base plate (1), and the two sets of bearing seats (24) are evenly arranged on the outer ring of the worm (22).

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