Knee joint buckling angle fixing tool for magnetic resonance scanning
By designing a knee flexion angle fixing tool for magnetic resonance scanning, using the right triangle structure and elastic band fixing method, it solves the problem that patients find it difficult to maintain appropriate knee flexion angle for a long time, and improves imaging quality and patient comfort.
Patent Information
- Application Number
- CN202323422936.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-15
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2033-12-15
AI Technical Summary
In magnetic resonance knee scans, it is difficult for patients to maintain appropriate knee flexion angles for a long time, resulting in poor imaging quality.
A magnetic resonance scanning knee flexion angle fixing tool is designed, including the thigh fixation area and the calf fixation area. Through a right-angle triangle structure with an acute angle of 7.5 degrees and the fixing method of elastic band, patients can maintain a 15-degree knee flexion angle.
It effectively helps patients maintain a 15-degree knee flexion angle, improves imaging quality, reduces patient discomfort, and is suitable for use with annular hard coil.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical imaging equipment, in particular to a tool for fixing the knee joint flexion angle during magnetic resonance scanning. Background Art
[0002] The knee joint refers to the bones and soft tissues of the knee. The soft tissues include meniscus, ligaments and other accessory structures. Knee MRI is very effective in diagnosing soft tissue diseases such as knee meniscus, cruciate ligament, medial and lateral collateral ligament injuries, and knee synovitis.
[0003] In the current clinical practice of cruciate ligament MRI examination, the commonly used method is to place the knee joint on the examined side in a circular hard coil or wrap it with a flexible coil, and the patient flexes the knee joint 15 degrees (i.e. the calf is bent downward, and the angle between the calf and the thigh plane is 15 degrees) to straighten the anterior cruciate ligament. In terms of improving imaging quality and scanning speed, the circular hard coil has greater advantages, so the circular hard coil is the first choice for cruciate ligament MRI examination.
[0004] During the examination, in order to make the cruciate ligament image clear, the patient needs to remain still in a 15-degree flexion position for 10-15 minutes. Movement of position and angle will result in unclear imaging. Currently, clinical practice mostly relies on the experience of imaging technicians, visually measuring the 15-degree angle and guiding the patient to position, but the patient's flexion angle is difficult to maintain for a long time. We urgently need a posture assist tool for magnetic resonance knee scanning that is of appropriate size to be used with a circular hard coil to help maintain a more comfortable flexion angle for the patient to complete the examination. Summary of the invention
[0005] In order to solve the above problems, the utility model provides a magnetic resonance scanning knee flexion angle fixing tool, which aims to provide an examination auxiliary tool with a suitable size for use with an annular hard coil and which can maintain a 15-degree flexion angle of the patient's knee joint.
[0006] To achieve the above-mentioned purpose, the utility model is implemented as follows: it includes a main body, which is divided into a thigh fixing area and a calf fixing area, the cross-section of the thigh fixing area and the calf fixing area is a right-angled triangle with an acute angle of 7.5 degrees and opposite acute angles, the thigh fixing area and the calf fixing area are connected at the top, and the angle between the hypotenuse of the bottom surface of the thigh fixing area and the calf fixing area is 165 degrees.
[0007] Furthermore, the tops of the thigh fixing area and the calf fixing area are convex arc-shaped, which fits the arc shape of the top of the annular hard coil.
[0008] The middle of the 7.5-degree acute angle between the thigh fixing area and the calf fixing area is a knee joint placement area, a knee joint fixing belt is provided on one side of the knee joint placement area, a Velcro is provided on the inner surface of the front end of the knee joint fixing belt, and an adhesive area that can be adhered to the Velcro is provided on the outer surface of the rear end of the knee joint fixing belt.
[0009] Furthermore, a popliteal support frame is provided on the knee joint fixation belt, and a sliding sleeve is provided on the popliteal support frame. The popliteal support frame can slide and move on the knee joint fixation belt through the sliding sleeve, and the included angle of the popliteal support frame is 165 degrees.
[0010] Furthermore, the popliteal fossa support frame is made of hard plastic material.
[0011] The bottom inclined surfaces of the thigh fixing area and the calf fixing area are inwardly concave arc-shaped, which fits the convex arc structure of the leg. Thigh fixing straps are provided on the left and right sides of the bottom acute angle of the thigh fixing area, and calf fixing straps are provided on the left and right sides of the bottom acute angle of the calf fixing area. One of the thigh fixing strap and the calf fixing strap is shorter and has a through hole at the top, and the other is longer and has a Velcro on the inner surface of the front end, and an adhesive area on the outer surface of the tail end that can be adhered to the Velcro.
[0012] Wherein, the knee joint fixing belt, thigh fixing belt and calf fixing belt are elastic belts.
[0013] Since the utility model adopts the above technology, the following beneficial effects are obtained: 1. The patient's knee joint is placed within the 165-degree angle formed by the utility model, and the patient's knee joint, thigh and calf are firmly fixed by the knee joint fixing belt, thigh fixing belt and calf fixing belt, so that the flexion angle is exactly 15 degrees; 2. The knee joint fixing belt, thigh fixing belt and calf fixing belt are all elastic belts, which fit various leg thicknesses and sizes and have strong versatility; 3. The top convex arc plane fits the annular hard coil, and the bottom concave arc inclined surface fits the leg. The structure is fine and compact, specially designed for the annular hard coil, and is convenient to put into the annular hard coil. The utility model can help patients complete magnetic resonance knee joint scanning comfortably and efficiently. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Attached Figure 1 It is a structural schematic diagram of the utility model.
[0015] Attached Figure 2 It is a schematic diagram showing that the bottom bevel angle formed by the thigh fixing area and the calf fixing area is 165 degrees.
[0016] Attached Figure 3 It is a schematic diagram of the structure of a knee joint fixation strap.
[0017] Attached Figure 4It is a schematic diagram of the thigh strap and the calf strap laid flat.
[0018] Attached Figure 5 It is a schematic diagram of the use of the utility model.
[0019] In the figure, 1. main body, 2. thigh fixing area, 3. calf fixing area, 4. knee joint placement area, 5. knee joint fixing strap, 6. Velcro, 7. sticking area, 8. popliteal fossa support frame, 81. sliding sleeve, 9. thigh fixing strap, 10. calf fixing strap, 11. through hole. Implementation
[0020] like Figure 1 As shown, a MRI scanning knee flexion angle fixation tool comprises a main body 1, the main body 1 is divided into a thigh fixation area 2 and a calf fixation area 3, the cross-section of the thigh fixation area 2 and the calf fixation area 3 is a right triangle with an acute angle of 7.5 degrees and opposite acute angles, the thigh fixation area 2 and the calf fixation area 3 are connected at the top, and the angle between the bottom hypotenuse of the thigh fixation area 2 and the calf fixation area 3 is 165 degrees, as shown in FIG. Figure 2 shown.
[0021] The tops of the thigh fixing area 2 and the calf fixing area 3 are convex arc-shaped, which fits the arc-shaped top of the annular hard coil.
[0022] The middle of the 7.5 degree acute angle between the thigh fixing area 2 and the calf fixing area 3 is a knee joint placement area 4, and a knee joint fixing belt 5 is provided on one side of the knee joint placement area 4. Figure 3 As shown, a Velcro 6 is provided on the inner surface of the front end of the knee joint fixing belt 5 , and a sticking area 7 which can be stuck to the Velcro 6 is provided on the outer surface of the rear end of the knee joint fixing belt 5 .
[0023] The knee joint fixing belt 5 is provided with a popliteal support frame 8, and the popliteal support frame 8 is provided with a sliding sleeve 81. The popliteal support frame 8 can slide and move on the knee joint fixing belt 5 through the sliding sleeve 81, and the included angle of the popliteal support frame 8 is 165 degrees.
[0024] The popliteal fossa support frame 8 is made of hard plastic.
[0025] The bottom slopes of the thigh fixing area 2 and the calf fixing area 3 are inwardly concave arc-shaped, which fits the convex arc structure of the leg. Thigh fixing belts 9 are provided on the left and right sides of the bottom acute angle of the thigh fixing area 2, and calf fixing belts 10 are provided on the left and right sides of the bottom acute angle of the calf fixing area 3. Figure 4 As shown, one of the thigh fixing strap 9 and the calf fixing strap 10 is shorter and has a through hole 11 at the top, while the other is longer and has a Velcro 6 on the inner surface of the front end and an adhesive area 7 on the outer surface of the rear end to which the Velcro 6 can be attached.
[0026] Among them, the knee joint fixing belt 5, the thigh fixing belt 9 and the calf fixing belt 10 are elastic belts.
[0027] The method of using the utility model is as follows: before the examination, the patient's knee joint is placed in the knee joint placement area 4, the bottom inclined surface of the thigh fixing area 2 fits the thigh, the bottom inclined surface of the calf fixing area 3 fits the calf, the knee joint fixing belt 5 goes around the patient's popliteal fossa downward and is placed on top of the main body 1, the position of the popliteal fossa support frame 8 is adjusted by sliding so that it is just stuck in the popliteal fossa, one hand fixes the popliteal fossa support frame 8, and the other hand tightens the knee joint fixing belt 5 to stick the Velcro 6 and the adhesive area 7 together; the thigh fixing belt 9 passes through the through hole 11 corresponding to the thigh fixing belt 2, and the other hand goes around the top surface of the thigh fixing area 2 upward, and then the thigh fixing belt 9 is tightened to stick its Velcro 6 and the adhesive area 7 together; the calf fixing belt 10 passes through the through hole 11 corresponding to the calf fixing belt 10, and the other hand goes around the top surface of the calf fixing area 3 upward, and then the calf fixing belt 10 is tightened to stick its Velcro 6 and the adhesive area 7 together. At this time, the knee joint flexion angle is exactly 15 degrees, and it can be kept fixed, such as Figure 5 As shown, after fixation, the patient's legs are placed in a circular hard coil for the next step of magnetic resonance examination.
[0028] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be 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 will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A tool for fixing the knee flexion angle during magnetic resonance scanning, characterized in that: The invention comprises a main body (1), wherein the main body (1) is divided into a thigh fixing area (2) and a calf fixing area (3), wherein the cross-section of the thigh fixing area (2) and the calf fixing area (3) is a right triangle with an acute angle of 7.5 degrees and opposite acute angles, wherein the thigh fixing area (2) and the calf fixing area (3) are connected at the top, and the angle between the bottom hypotenuses of the thigh fixing area (2) and the calf fixing area (3) is 165 degrees, and the middle of the 7.5-degree acute angle between the thigh fixing area (2) and the calf fixing area (3) is a knee joint placement area (4), and a knee joint fixing belt (5) is provided on one side of the knee joint placement area (4), and a magic ring is provided on the inner surface of the front end of the knee joint fixing belt (5). The knee joint fixing belt (5) has a sticking area (7) on its rear end that can be stuck to the Velcro (6), the bottom slopes of the thigh fixing area (2) and the calf fixing area (3) are inwardly concave arc-shaped, thigh fixing belts (9) are provided on the left and right sides of the bottom acute angle of the thigh fixing area (2), and calf fixing belts (10) are provided on the left and right sides of the bottom acute angle of the calf fixing area (3), one of the thigh fixing belt (9) and the calf fixing belt (10) is shorter and has a through hole (11) at the top, while the other is longer and has a Velcro (6) on the inner surface of the front end, and a sticking area (7) on the outer surface of the rear end that can be stuck to the Velcro (6).
2. The MRI scanning knee flexion angle fixation tool according to claim 1, characterized in that: The tops of the thigh fixing area (2) and the calf fixing area (3) are convex arc-shaped.
3. The MRI scanning knee flexion angle fixation tool according to claim 1, characterized in that: The knee joint fixing belt (5) is provided with a popliteal fossa support frame (8), the popliteal fossa support frame (8) is provided with a sliding sleeve (81), and the included angle of the popliteal fossa support frame (8) is 165 degrees.
4. The MRI scanning knee flexion angle fixation tool according to claim 3, characterized in that: The popliteal fossa support frame (8) is made of hard plastic material.
5. The MRI scanning knee flexion angle fixation tool according to claim 1, characterized in that: The knee joint fixing belt (5), the thigh fixing belt (9) and the calf fixing belt (10) are elastic belts.