Lower limb diffusion tensor imaging scanning fixing device

Abstract

The utility model relates to the technical field of nuclear magnetic resonance imaging, in particular to a lower limb diffusion tensor imaging scanning fixing device which comprises a scanning frame provided with a conical through hole and a fixing plate, the scanning frame is detachably connected with the fixing plate, a foot supporting plate is arranged on the fixing plate, an elastic band used for fixing a foot is arranged on the foot supporting plate, and the lower limb diffusion tensor imaging scanning fixing device is arranged on the elastic band. A rotating mechanism enabling the foot supporting plate to rotate is arranged on the fixing plate. By arranging the foot supporting plate and the elastic band, the two feet of a patient and the foot supporting plate are fixed, motion artifacts are effectively reduced, the image quality is improved, meanwhile, muscles of the two lower limbs of the patient are always kept in a relaxed state during resting in the scanning process, and therefore the integrity of muscle fibers in the state is determined; the rotating mechanism is arranged on the fixing plate, the foot supporting plate is rotated through the rotating mechanism, the two feet of the patient can conduct foot dorsal bending or foot dorsal stretching correspondingly, the tension degree of muscle fibers is increased, and the storage function of the muscle fibers can be evaluated.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear magnetic resonance imaging, in particular to a lower limb diffusion tensor imaging scanning and fixing device. Background Art

[0002] Magnetic resonance diffusion tensor imaging is the development and deepening of diffusion-weighted imaging. It is currently the only non-invasive examination method that can effectively observe and track brain white matter fiber bundles. By 2015, it was mainly used for the observation and tracking of the brain, especially white matter bundles, the study of brain development and brain cognitive function, the pathological changes of brain diseases, and the preoperative planning and postoperative evaluation of brain surgery. At present, diffusion tensor imaging is also gradually used to evaluate the damage of lower limb muscle fibers in patients with lower limb arteriosclerosis or diabetic foot.

[0003] Currently, there is no component to support or fix the patient's feet during the diffusion tensor imaging scanning process. For patients with lower limb arteriosclerosis or diabetic foot, it is difficult to complete the entire scanning process on their own. During the scanning process, the feet or lower limbs may shake, resulting in motion artifacts in the scanned image, that is, the scan failed, and then the scanning process needs to be repeated, wasting medical resources and increasing the patient's discomfort. Utility Model Content

[0004] The purpose of the utility model is to provide a lower limb diffusion tensor imaging scanning fixation device in view of the deficiencies of the prior art, so as to solve the problem in the prior art that it is difficult for patients with lower limb arteriosclerosis or diabetic foot to adhere to the entire scanning process by themselves, and the feet or lower limbs may shake during the scanning process, resulting in motion artifacts in the scanned image, i.e., scanning failure, and then the scanning process needs to be repeated, which wastes medical resources and increases the discomfort of the patients.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A lower limb diffusion tensor imaging scanning and fixing device comprises a scanning frame with a conical through hole and a fixing plate, wherein the scanning frame and the fixing plate are detachably connected, a foot support plate is provided on the fixing plate, an elastic band for fixing the foot is provided on the foot support plate, and a rotating mechanism for rotating the foot support plate is provided on the fixing plate.

[0007] Furthermore, the scanning frame is formed by casting anti-magnetic gel material.

[0008] Furthermore, the rotating mechanism includes a worm and a rotating rod which are respectively rotatably connected to the fixed plate, a worm wheel is fixedly sleeved on the rotating rod, the worm is transmission-connected to the worm wheel, the rotating rod is fixedly connected to the foot support plate, and a rotating handle is connected to the worm.

[0009] Furthermore, a boss is provided on the fixing plate, and a groove corresponding to the boss is provided on the scanning frame.

[0010] Furthermore, a strap groove is provided on the entrance side of the scanning frame, and a strap for fixing the lower limbs is provided in the strap groove.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model fixes the patient's feet to the foot support board by arranging a foot support board and an elastic band, thereby effectively reducing motion artifacts, improving image quality, avoiding repeated scanning, and reducing the waste of medical resources. At the same time, the patient's lower limb muscles are always kept in a relaxed state at rest during the scanning process, so as to clarify the integrity of the muscle fibers in this state; and a rotating mechanism is provided on the fixing plate, and the foot support board is rotated by the rotating mechanism. The patient's feet will follow the rotation of the foot support board to perform dorsiflexion or dorsiflexion of the foot accordingly, so as to increase the tension of the muscle fibers, and the reserve function of the muscle fibers can be evaluated.

[0013] In addition, by setting up a worm gear transmission mechanism, the staff can adjust the rotation direction and angle of the patient's feet according to the condition of each patient's lower limbs, so as to keep the patient in a comfortable state for scanning as much as possible and reduce the patient's discomfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a lower limb diffusion tensor imaging scanning and fixing device provided by the utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure of the back side of a lower limb diffusion tensor imaging scanning and fixing device provided by the utility model.

[0016] Wherein, the accompanying drawings are marked as follows:

[0017] 1. Scanning frame; 2. Fixing plate; 3. Through hole; 4. Foot support plate; 5. Elastic band; 6. Worm; 7. Rotating rod; 8. Worm wheel; 9. Rotating handle; 10. Boss; 11. Groove; 12. Strap groove. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0020] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0022] For easier understanding, see Figure 1 to Figure 2 The present embodiment provides a lower limb diffusion tensor imaging scanning and fixing device, comprising a detachably connected scanning frame 1 and a fixing plate 2, wherein the scanning frame 1 is cast by a diamagnetic material, such as acrylic gel. There are two conical through holes 3 in the scanning frame 1, and the side with a larger diameter of the through hole 3 is the entrance side. When the patient is in a right side lying position, the lower limbs of the patient can be respectively inserted into the two through holes 3 of the scanning frame 1 and extended from the side with a smaller diameter of the through hole 3. The fixing plate 2 is provided with two foot support plates 4 for placing the patient's feet, and the foot support plates 4 are provided with elastic bands 5 for fixing the patient's feet. The fixing plate 2 is provided with a rotating mechanism for rotating the foot support plates 4. After the patient extends both lower limbs from the smaller side of the through hole 3 of the scanning frame 1, the two feet are respectively abutted on the foot support plates 4 of the fixing plate 2. The staff uses the elastic bands 5 to fix the patient's feet to the foot support plates 4, and then connects the fixing plate 2 to the scanning frame 1. By fixing the patient's feet, motion artifacts can be effectively reduced, image quality can be improved, repeated scanning can be avoided, and the waste of medical resources can be reduced. At the same time, the patient's lower limb muscles can always maintain a relaxed state at rest during the scanning process, thereby clarifying the integrity of the muscle fibers in this state. The foot support plate 4 is rotated by the rotating mechanism, and the patient's feet will follow the rotation of the foot support plate 4 to perform dorsiflexion or dorsiflexion of the foot, which is used to increase the tension of the lower limb muscle fibers and evaluate the reserve function of the muscle fibers.

[0023] The rotating mechanism includes a worm 6 and a rotating rod 7 which are respectively connected to the fixed plate 2 in rotation. The worm 6 and the rotating rod 7 are arranged in a vertical direction. A worm wheel 8 is fixedly sleeved on the rotating rod 7. The teeth on the worm 6 and the worm wheel 8 are meshed and connected for transmission. Two foot support plates 4 are fixedly connected to the rotating rod 7. The worm 6 penetrates through the wall of the fixed plate 2 and is connected to the rotating handle 9. When the staff rotates the rotating handle 9, the worm 6 drives the worm wheel 8 to rotate, and the worm wheel 8 then drives the two foot support plates 4 fixed on the rotating rod 7 to rotate in one direction at the same time, so that the patient's feet will follow the rotation of the foot support plate 4 to perform dorsiflexion or dorsiflexion of the foot. The staff can adjust the rotation direction and rotation angle according to the lower limb condition of each patient, so as to keep the patient in a comfortable dorsiflexion and extension state for scanning as much as possible, thereby reducing the patient's discomfort.

[0024] A boss 10 is provided on the fixing plate 2, and a groove 11 corresponding to the boss 10 is provided on the scanning frame 1. After the patient's foot is fixed on the foot support plate 4, the boss 10 of the fixing plate 2 is inserted into the groove 11 of the scanning frame 1, and the fixing plate 2 can be connected to the scanning frame 1. A strap groove 12 is provided on the entrance side of the through hole 3 of the scanning frame 1, and a strap is wound in the strap groove 12. The staff can use the strap to fix the upper part of the patient's lower limb according to the actual situation of the patient, further reduce motion artifacts, and improve image quality. The strap can also be directly removed when not needed.

[0025] Although the present invention has been described using the above preferred embodiments, it is not intended to limit the scope of protection of the present invention. Any person skilled in the art may make various changes and modifications to the above embodiments without departing from the spirit and scope of the present invention, and the changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A lower limb diffusion tensor imaging scanning fixation device, characterized in that: The invention comprises a scanning frame (1) provided with a conical through hole (3) and a fixing plate (2), wherein the scanning frame (1) and the fixing plate (2) are detachably connected, a foot support plate (4) is provided on the fixing plate (2), an elastic band (5) for fixing the foot is provided on the foot support plate (4), and a rotating mechanism for rotating the foot support plate (4) is provided on the fixing plate (2).

2. The lower limb diffusion tensor imaging scanning fixation device according to claim 1, characterized in that: The scanning frame (1) is formed by casting anti-magnetic gel material.

3. The lower limb diffusion tensor imaging scanning fixation device according to claim 1, characterized in that: The rotating mechanism comprises a worm (6) and a rotating rod (7) which are respectively rotatably connected to the fixed plate (2); a worm wheel (8) is fixedly sleeved on the rotating rod (7); the worm (6) is transmission-connected to the worm wheel (8); the rotating rod (7) is fixedly connected to the foot support plate (4); and a rotating handle (9) is connected to the worm (6).

4. The lower limb diffusion tensor imaging scanning fixation device according to claim 1, characterized in that: The fixing plate (2) is provided with a boss (10), and the scanning frame (1) is provided with a groove (11) corresponding to the boss (10).

5. The lower limb diffusion tensor imaging scanning fixation device according to claim 1, characterized in that: The entrance side of the scanning frame (1) is provided with a binding belt slot (12), and a binding belt for fixing the lower limbs is arranged in the binding belt slot (12).

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