Head limiting structure

Abstract

The utility model discloses a head limiting structure, including the positioning frame, the top of positioning frame is provided with the pillow groove, and the both sides of positioning frame's top are rotatably connected with the buckle frame, the inner surface of two buckle frames all is provided with the accommodation slot, and the sliding connection of nesting of two accommodation slots all has the compression frame, and two accommodation slots inner wall all is provided with the thread groove, two compression frames all are rotatably connected with the screw rod, and two screw rods and two thread grooves are corresponding thread connection, the one end of positioning frame and two buckle frames all is fixedly connected with the top end frame, and one buckle frame is provided with the buckle belt. In the utility model, through the setting of positioning frame, pillow groove, two buckle frames etc. structure, can combine and constitute a stable head limiting structure, like this can carry out a stable positioning effect to the head of patient, and cooperate the setting of buckle belt, positioning buckle, positioning buckle block, can make whole limiting structure can be stably positioned.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a head limiting structure. Background Technology

[0002] Nuclear magnetic resonance (NMR) is the physical process by which atomic nuclei with non-zero magnetic moments undergo Zeeman splitting of their spin energy levels under the influence of an external magnetic field, resonating and absorbing radio frequency radiation of a certain frequency. NMR spectroscopy is a branch of spectroscopy, and its resonance frequency is in the radio frequency band. The corresponding transition is a transition of nuclear spin at the nuclear Zeeman energy level. During NMR, patients need to lie on a bed and keep their bodies still. However, many traditional NMR bed frames use a single headrest structure for patient head positioning. While this allows for precise head positioning, it lacks a stable restraint structure. Patients often shake their heads or move their bodies during the test, causing head displacement, which can affect the test results and makes the system unstable. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a head-limiting structure.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a head limiting structure, including a positioning frame, a pillow groove on the top of the positioning frame, and buckles rotatably connected to both sides of the top of the positioning frame. A storage groove is provided on the inner surface of each of the two buckles, and a pressing frame is nested and slidably connected within each of the two storage grooves. A threaded groove is provided on the inner wall of each of the two storage grooves. A screw is rotatably connected to each of the two pressing frames, and the two screws are threadedly connected to the two threaded grooves. A top bracket is fixedly connected to one end of the positioning frame and one end of each buckle. A buckle strap is provided on one of the buckles, and a positioning buckle is provided on the buckle strap. A positioning buckle block is provided on the other buckle, and the positioning buckle and the positioning buckle block are fastened together.

[0005] As a further description of the above technical solution:

[0006] Each of the positioning frame and the two buckles is fixedly connected to a set of rotating blocks, and the two sets of rotating blocks are rotatably connected by a rotating shaft.

[0007] As a further description of the above technical solution:

[0008] The inner wall of the pillow groove and the inner surfaces of the two buckle frames are each provided with a protective pad 1, and the outer surfaces of the two clamping frames are each provided with a protective pad 2.

[0009] As a further description of the above technical solution:

[0010] Guide blocks are fixedly connected to both clamping frames, and guide grooves are provided on the inner walls of both storage slots. The two guide blocks and the two guide grooves are arranged in a corresponding nested sliding fit.

[0011] As a further description of the above technical solution:

[0012] One end of one of the buckles is fixedly connected to a positioning block, and one end of the other buckle is provided with a positioning groove. The positioning block and the positioning groove are nested together.

[0013] As a further description of the above technical solution:

[0014] One end of the buckle is fixedly connected to one of the buckle frames by a rivet.

[0015] As a further description of the above technical solution:

[0016] The buckle, positioning buckle, and positioning block structure are provided in two sets.

[0017] This utility model has the following beneficial effects:

[0018] This head-limiting structure, through the design of a positioning frame, a pillow groove, and two buckles, can be combined to form a stable head-limiting structure, providing a stable positioning effect for the patient's head. Combined with the buckle, positioning buckle, and positioning block, the entire limiting structure can be stably positioned. The structure can also be easily disassembled and opened, making it simple to operate and flexible to use. Through the inclusion of a storage slot, a clamping frame, a screw, and a threaded groove, after the buckle covers the patient's face, the clamping frame can be adjusted to fit the patient's forehead, thus providing auxiliary head positioning. Furthermore, this structural design can accommodate patients with different head circumferences, greatly improving the overall flexibility of the structure. Attached Figure Description

[0019] Fig. 1 This is a schematic diagram of the overall structure of a head limiting structure proposed in this utility model;

[0020] Fig. 2 This is a side view of a head-limiting structure proposed in this utility model.

[0021] Legend:

[0022] 1. Positioning frame; 2. Pillow groove; 3. Buckle frame; 4. Rotating block; 5. Rotating shaft; 6. Protective pad one; 7. Storage groove; 8. Pressing frame; 9. Protective pad two; 10. Threaded groove; 11. Screw; 12. Guide block; 13. Guide groove; 14. Top frame; 15. Positioning block; 16. Positioning groove; 17. Rivet; 18. Buckle strap; 19. Positioning buckle; 20. Positioning buckle block. Detailed Implementation

[0023] 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.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0025] Reference Figs. 1-2This utility model provides an embodiment of a head positioning structure, including a positioning frame 1. The top of the positioning frame 1 has a pillow groove 2. The positioning frame 1 is typically fixedly installed at one end of an MRI examination bed. The pillow groove 2 is the positioning position for the patient's head. Buckles 3 are rotatably connected to both sides of the top of the positioning frame 1. A set of rotating blocks 4 are fixedly connected to both the positioning frame 1 and the two buckles 3. The two sets of rotating blocks 4 are rotatably connected via a rotating shaft 5. The buckles 3 are arc-shaped, allowing them to cover the patient's head and provide auxiliary positioning. The buckles 3 can be easily rotated and opened for convenient positioning examinations. The inner surfaces of both buckles 3 have storage grooves 7. A clamping frame 8 is nested and slidably connected within each of the two storage grooves 7. The clamping frame 8 is positioned near one end of the buckle 3 and its function is to adjust it to fit the patient's forehead, thus providing auxiliary positioning. The inner walls of both storage grooves 7 have threaded grooves 10. A set of rotating blocks 10 is rotatably connected to each of the two clamping frames 8. The screws 11 and two threaded grooves 10 are connected by corresponding threads. One end of the positioning frame 1 and the two buckle frames 3 are fixedly connected to the top frame 14. The top frame 14 can block one end of the occipital groove 2, which is the blocking and positioning position of the top of the patient's head. One buckle frame 3 is provided with a buckle 18. One end of the buckle 18 is fixedly connected to one buckle frame 3 by a rivet 17. The buckle 18 is provided with a positioning buckle 19. The other buckle frame 3 is provided with a positioning buckle block 20. The positioning buckle 19 and the positioning buckle block 20 are fastened together. The positioning buckle 19 and the positioning buckle block 20 can be conventional snaps, which can be fastened together by pressing and can also be easily disassembled and opened. There are two sets of buckle 18, positioning buckle 19 and positioning buckle block 20. By fastening the positioning buckle 19 and the positioning buckle block 20 together, the two buckle frames 3 can be connected together. The entire positioning frame 1 and buckle frame 3 can be made of carbon fiber material, so as not to affect the normal use of the MRI equipment.

[0026] The inner wall of the pillow groove 2 and the inner surface of the two buckle frames 3 are provided with protective pad 1 6, and the outer surface of the two clamping frames 8 are provided with protective pad 2 9. The protective pad structure can play an auxiliary protective role when the patient's head is positioned.

[0027] Guide blocks 12 are fixedly connected to both clamping frames 8, and guide grooves 13 are provided on the inner walls of both storage slots 7. The two guide blocks 12 and the two guide grooves 13 are nested and slidably fitted. This structure allows the clamping frames 8 to be moved smoothly when the screw 11 rotates, in conjunction with the threaded groove 10.

[0028] One end of one of the fasteners 3 is fixedly connected to a positioning block 15, and the other end of the fastener 3 is provided with a positioning groove 16. The positioning block 15 and the positioning groove 16 are nested together. This structure can enhance the stability of the positioning after the two fasteners 3 are rotated and docked together.

[0029] Working principle: When using the head limiting structure, the patient's head is placed in the pillow groove 2, and the two buckle frames 3 are rotated to cover the patient's face. The positioning buckle 19 on the buckle 18 is fastened to the positioning buckle block 20, which fixes the two buckle frames 3 together. Rotating the screw 11, the screw 11 can drive the clamping frame 8 to move down through the cooperation of the threaded groove 10. When the clamping frame 8 is in contact with the patient's forehead, it can play a stable auxiliary positioning and fixation role.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A head-limiting structure, comprising a positioning frame (1), characterized in that: The top of the positioning frame (1) is provided with a pillow groove (2), and both sides of the top of the positioning frame (1) are rotatably connected with buckles (3). The inner surfaces of the two buckles (3) are provided with storage grooves (7). The two storage grooves (7) are nested and slidably connected with pressing frames (8). The inner walls of the two storage grooves (7) are provided with threaded grooves (10). The two pressing frames (8) are rotatably connected with screws (11). The two screws (11) and the two threaded grooves (10) are connected with corresponding threads. One end of the positioning frame (1) and the two buckles (3) are fixedly connected with a top frame (14). One buckle (3) is provided with a buckle strap (18). The buckle strap (18) is provided with a positioning buckle (19). The other buckle (3) is provided with a positioning buckle block (20). The positioning buckle (19) and the positioning buckle block (20) are fastened together.

2. The head-limiting structure according to claim 1, characterized in that: The positioning frame (1) and the two buckles (3) are each fixedly connected with a set of rotating blocks (4), and the two sets of rotating blocks (4) are rotatably connected by a rotating shaft (5).

3. The head-limiting structure according to claim 1, characterized in that: The inner wall of the pillow groove (2) and the inner surfaces of the two buckle frames (3) are provided with protective pads one (6), and the outer surfaces of the two clamping frames (8) are provided with protective pads two (9).

4. The head-limiting structure according to claim 1, characterized in that: Guide blocks (12) are fixedly connected to both clamping frames (8), and guide grooves (13) are provided on the inner walls of both storage slots (7). The two guide blocks (12) and the two guide grooves (13) are configured to be nested and slidably fitted.

5. The head-limiting structure according to claim 1, characterized in that: One end of one of the buckles (3) is fixedly connected to a positioning block (15), and one end of the other buckle (3) is provided with a positioning groove (16). The positioning block (15) and the positioning groove (16) are nested together.

6. The head-limiting structure according to claim 1, characterized in that: One end of the buckle (18) is fixedly connected to one of the buckle frames (3) by a rivet (17).

7. The head-limiting structure according to claim 1, characterized in that: The buckle (18), positioning buckle (19), and positioning buckle block (20) are provided in two sets.

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