Arm positioning sleeve for nuclear magnetic resonance

Abstract

The utility model provides a kind of arm positioning sheath for nuclear magnetic resonance, belong to medical instrument technical field.It solves how to realize the problem of the quick adjustment of patient arm posture while ensuring scanning imaging effect.This arm positioning sheath for nuclear magnetic resonance includes two L-shaped shields, two The shield is spliced and internally formed into a hollow accommodating cavity, two The shield is connected with the limiting component for preventing patient arm rotation, two The limiting component is close to the middle part of the accommodating cavity and is set, two The limiting component is inserted into the accommodating cavity and position is opposite.This arm positioning sheath for nuclear magnetic resonance can be quickly adjusted while ensuring scanning imaging effect for patient arm posture.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology and relates to an arm positioning sleeve for MRI. Background Technology

[0002] Magnetic resonance imaging (MRI) is one of the most important diagnostic tools in modern clinical medicine. It is suitable for examining various parts of the body. During the examination, medical staff need the patient to lie on the examination bed and then work through the scanning sheath. The patient's body needs to remain relatively still throughout the process. However, the requirements for scanning images of different parts are often different. When scanning the arm, the patient's arm generally needs to be straight with the palm facing up.

[0003] However, due to the difference between patients' perception and that of medical staff, allowing patients to adjust their posture at will may not ensure the accuracy of their arm posture. Therefore, before the scan, medical staff usually need to enter the examination room to manually adjust the patient's arm posture. The whole process is time-consuming. Furthermore, during the scan, patients may unconsciously rotate their arms, causing a difference between the posture of the humerus above the elbow and the actual needs, resulting in deviations in the scan image. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing an arm positioning sleeve for MRI. The technical problem this invention aims to solve is: how to achieve rapid adjustment of the patient's arm posture while ensuring the quality of the scanning imaging.

[0005] The purpose of this utility model can be achieved through the following technical solution: an arm positioning sleeve for MRI, comprising two L-shaped protective plates, characterized in that the two protective plates are spliced ​​together and form a hollow receiving cavity inside, and each of the two protective plates is connected with a limiting component for preventing the patient's arm from rotating, and both sets of the limiting components are located close to the middle of the receiving cavity, and both sets of the limiting components extend into the receiving cavity and are positioned opposite each other.

[0006] This arm positioning sleeve is used to stabilize the patient's arm during MRI examinations. It consists of two L-shaped plates. Before the MRI, medical staff join the two plates together to form a cavity to accommodate the patient's arm. Notably, the cavity formed when the two plates enclose the arm is also L-shaped, with the longer end accommodating the arm and the shorter end covering the shoulder joint. This ensures proper accommodation of the arm from the shoulder to the wrist. Limiting components that extend into the cavity are located on both plates. It is important to emphasize that while the orientation of the radius and ulna in the upper limb can be controlled by the hand bones, the patient's arm is positioned with the palm facing upwards before the examination. Therefore, if the orientation of the radius and ulna is incorrect during the examination... Medical staff can promptly inform patients of the correct hand position. The challenge in adjusting arm position lies in the humerus, the bone of the upper limb. Even subtle movements by the patient can cause displacement or rotation of the humerus, which cannot be corrected through hand bone control. Therefore, this application incorporates two sets of limiting components. One set rests on the inner skin of the patient's elbow joint, while the other rests on the outer skin. The cooperation of these two sets of limiting components restricts the upward movement of the patient's elbow joint, preventing errors in humeral posture. This restricts the patient's arm position, ensuring the accuracy of the scanning image. Furthermore, before the examination (i.e., when wearing this positioning sleeve), the two sets of limiting components and the inner wall of the receiving cavity allow for direct adjustment of the patient's arm position, eliminating the need for time-consuming and laborious manual adjustments by medical staff, making pre-examination preparation quicker and more convenient.

[0007] In the aforementioned MRI arm positioning sleeve, each of the sleeve plates has a perforation communicating with the receiving cavity. Each set of limiting components includes a base plate and a threaded sleeve. One side of the base plate has a limiting pad made of elastic material, and the center of the other side has a screw. The screw passes through the perforation and is screwed into the threaded sleeve. Specifically, each set of limiting components uses the base plate as a carrier. The limiting pad, which is imaged on one side of the plate, contacts the patient's skin. Due to the elasticity of the limiting pad, discomfort from hard contact is avoided. At the same time, the screw passes through the perforation and is screwed into the threaded sleeve, thereby maximizing the confinement of the limiting component within the perforation. This ensures that the limiting pads on both sets of limiting components always abut against the inner and outer skin of the patient's elbow joint, ensuring the confinement of the patient's elbow joint.

[0008] In the aforementioned MRI arm positioning sleeve, the perforation is elongated and arranged along the length of the sleeve. A receiving groove is formed on the outer wall of the sleeve, surrounding the perforation, and the threaded sleeve is embedded in the receiving groove. Different patients have different arm lengths, and therefore different elbow positions. Medical staff can slide and adjust the position of the locking component within the perforation according to the actual situation, ensuring that the locking component is always aligned with the elbow joint. Furthermore, the receiving groove ensures that the threaded sleeve is effectively contained, preventing excessive protrusion that would cause the arm positioning sleeve to lie flat on the scanning table.

[0009] In the aforementioned arm positioning sleeve for MRI, one set of the limiting components has a planar limiting pad surface, while the other set has a spherical groove on its limiting pad surface. This ensures that both sets of limiting components better conform to the human body structure. The planar limiting pad corresponds to the inner side of the elbow joint, while the limiting pad with the spherical groove corresponds to the outer side of the elbow joint. The two work together to effectively limit the elbow joint on both sides. Alternatively, the outer wall of the planar limiting pad can be designed to be an outwardly convex spherical surface.

[0010] In the aforementioned MRI arm positioning sleeve, two protective plates are hinged together on one side. One protective plate has several fasteners along its length on the other side, and the other protective plate has several latches along its length on the other side. The fasteners and latches are positioned opposite each other and locked in place. This ensures ease of assembly and disassembly of the two protective plates. The hinge method for the two protective plates in this application is diverse; it can employ known hinges or a plastic strip with high bending resistance, heat-fused to the two protective plates.

[0011] In the aforementioned arm positioning sleeve for MRI, each of the sleeve plates has a notch on its rear outer wall, and two notches together form a clearance opening that connects to the receiving cavity. This notch design ensures that the armpit area is properly positioned for the patient during wear, preventing interference and discomfort.

[0012] In the aforementioned MRI arm positioning sleeve, a soft pad made of elastic material is fixed to one side of each of the two protective plates. This soft pad wraps around the patient's arm within the receiving cavity, improving comfort and providing some degree of restraint.

[0013] In the aforementioned MRI arm positioning sleeve, a level is fixedly attached to the outer wall of one of the sleeve plates. This allows personnel to determine whether the patient's arm is positioned correctly using the level.

[0014] Compared with existing technologies, this MRI arm positioning sleeve has the following advantages:

[0015] 1. The cavity formed by the splicing of two protective plates accommodates the patient's arm. Limiting components installed on the two protective plates extend into the cavity to press against the inside and outside of the patient's elbow joint. While the two protective plates and two sets of limiting components enable rapid adjustment of the patient's arm posture, they also ensure that the patient's arm is limited, thus ensuring the accuracy of the scanning image.

[0016] 2. The limiting component can slide in the perforations in the guard plate according to the patient's arm length, ensuring that its position is aligned with the elbow joint position for patients with different arm lengths, making it suitable for higher-end fitting. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the arm positioning sleeve used for nuclear magnetic resonance imaging.

[0018] Figure 2 This is a front view of the arm positioning sleeve used for MRI.

[0019] Figure 3 yes Figure 2 A sectional view taken along the AA direction.

[0020] Figure 4 This is a structural diagram of one of the protective plates.

[0021] Figure 5 This is a structural diagram of another protective plate.

[0022] Figure 6 This is a structural diagram of one of the limiting components.

[0023] Figure 7 This is a structural diagram of another set of limiting components.

[0024] In the diagram, 1 is the protective plate; 11 is the perforation; 12 is the receiving groove; 13 is the buckle plate; 14 is the buckle; 15 is the notch; 16 is the soft pad; 17 is the level; 2 is the receiving cavity; 3 is the limiting component; 31 is the base plate; 311 is the limiting pad; 312 is the screw; 32 is the threaded sleeve; and 4 is the clearance opening. Detailed Implementation

[0025] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0026] like Figure 1 , Figure 4 , Figure 6 as well as Figure 7As shown, the MRI arm positioning sleeve includes two L-shaped protective plates 1, which are hinged together on one side. One protective plate 1 has several buckles 13 along its length on the other side, and the other protective plate 1 has several latches 14 along its length on the other side. The two protective plates 1 can rotate and open around the hinge. In the assembled state, each buckle 13 and each latch 14 can lock and fix them, so that the two protective plates 1 together form a receiving cavity 2 for accommodating the patient's arm.

[0027] The longer end of each of the two protective plates 1 is the front end, and the shorter end is the rear end. A level 17 is fixed on the outer side wall of the front end of one of the protective plates 1, preferably at the middle of the front end of the protective plate 1. Both protective plates 1 have notches 15 at their rear ends, and the two notches 15 together form a relief opening 4 that connects to the receiving cavity 2. When the user wears the protective plate, the relief opening 4 can prevent pressure on the patient's armpit area and avoid discomfort.

[0028] Combination Figure 3 as well as Figure 5 Both protective plates 1 have elongated perforations 11 along their length on the outer walls of their front ends. These perforations 11 are connected to the receiving cavity 2. Each protective plate 1 is connected to a limiting component 3 that extends into the cavity through the perforation 11 and is positioned opposite to the other. Specifically, each limiting component 3 includes a threaded sleeve 32 and a base plate 31. A limiting pad 311 made of rubber or silicone material is integrally formed on one side of the base plate 31, and a screw 312 is formed at the center of the other side of the base plate. The screw 312 passes through the perforation 11. It is screwed to the threaded sleeve 32, so that the substrate 31 is locked on the inner wall of the protective plate 1. In addition, a receiving groove 12 is provided around the through hole 11 on the outer wall of the protective plate 1. The threaded sleeve 32 is embedded in the receiving groove 12 to prevent it from protruding too much and causing the MRI arm positioning sleeve to be unable to be placed flat on the scanning bed. It is worth mentioning that in the two sets of limiting components 3, the limiting pad 311 in one set of limiting components 3 has a flat surface, and the limiting pad 311 in the other set of limiting components 3 has a spherical groove on its surface.

[0029] On one side of the two protective plates 1, there is a soft pad 16 made of elastic materials such as sponge and silicone. In order to ensure that the position of the limiting component 3 can slide, the soft pad 16 has an opening at the corresponding perforation 11 to allow the limiting pad 311 to pass through. Since this MRI arm positioning sleeve is mainly used for MRI examination, components such as threaded sleeve 32 and screw 312 can be made of non-magnetic metals such as copper and aluminum.

[0030] Operating principle: After the patient lies on the examination bed, the arm is placed in one of the guard plates 1. Then, the medical staff is responsible for closing the two guard plates 1 together. With the cooperation of the buckle 14 and the fastener 13, the two guard plates 1 form a receiving cavity 2, which accommodates the patient's arm. The soft pad 16 is used to ensure the patient's arm is comfortable. The limiting component 3 slides in the perforation 11 to adjust its position, ensuring that it always corresponds to the patient's elbow position. The limiting pad 311 of one set of limiting components 3 is pressed against the inner skin of the patient's elbow, and the limiting pad 311 of the other set of limiting components 3 is pressed against the outer skin of the patient's elbow, thereby limiting the humerus of the patient's arm.

[0031] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0032] Although this document frequently uses terms such as protective plate 1, perforation 11, receiving groove 12, buckle plate 13, snap fastener 14, notch 15, soft pad 16, level 17, receiving cavity 2, limiting component 3, base plate 31, limiting pad 311, screw 312, threaded sleeve 32, and clearance opening 4, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A positioning sleeve for an arm used in nuclear magnetic resonance imaging, comprising two L-shaped protective plates (1), characterized in that, The two protective plates (1) are spliced ​​together and form a hollow receiving cavity (2) inside. Both protective plates (1) are connected with limiting components (3) to prevent the patient's arm from rotating. Both sets of limiting components (3) are set close to the middle of the receiving cavity (2). Both sets of limiting components (3) extend into the receiving cavity (2) and are positioned opposite each other.

2. The arm positioning sleeve for nuclear magnetic resonance imaging according to claim 1, characterized in that, Each of the protective plates (1) has a through hole (11) that communicates with the receiving cavity (2). Each set of limiting components (3) includes a base plate (31) and a threaded sleeve (32). One side of the base plate (31) has a limiting pad (311) made of elastic material, and the center of the other side has a screw (312). The screw (312) passes through the through hole (11) and is screwed to the threaded sleeve (32).

3. The arm positioning sleeve for nuclear magnetic resonance imaging according to claim 2, characterized in that, The perforation (11) is long and arranged along the length of the guard plate (1), and a receiving groove (12) is provided on the outer side wall of the guard plate (1) around the perforation (11), and the threaded sleeve (32) is embedded in the receiving groove (12).

4. The MRI arm positioning sleeve according to claim 2 or 3, characterized in that, The limiting pad (311) of one set of the limiting components (3) has a planar surface, while the limiting pad (311) of the other set of the limiting components (3) has a spherical groove on its surface.

5. The MRI arm positioning sleeve according to claim 1, 2, or 3, characterized in that, The two guard plates (1) are hinged together on one side. One guard plate (1) has several buckles (13) along its length on the other side, and the other guard plate (1) has several buckles (14) along its length on the other side. The buckles (13) and buckles (14) are positioned opposite each other and locked together.

6. The arm positioning sleeve for nuclear magnetic resonance imaging according to claim 5, characterized in that, Each of the protective plates (1) has a notch (15) on its rear outer wall, and the two notches (15) together form a clearance opening (4) that connects to the receiving cavity (2).

7. The arm positioning sleeve for nuclear magnetic resonance imaging according to claim 6, characterized in that, The two protective plates (1) are fixed with a soft pad (16) made of elastic material on one side of their opposite surfaces.

8. The arm positioning sleeve for nuclear magnetic resonance imaging according to claim 7, characterized in that, A level (17) is fixedly connected to the outer wall of one of the guard plates (1).

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