Adjustable knee joint fixing device for magnetic resonance examination

Abstract

The adjustable knee joint fixing device for the magnetic resonance examination comprises a base, two second sliding grooves are fixedly formed in the top of the base, sliding plates are installed in the two second sliding grooves in a sliding mode, and installation bases are fixedly installed at the tops of the two sliding plates. Connecting blocks are fixedly mounted on the two sides of the surfaces of the two mounting bases, a guide rail is fixedly mounted between the two connecting blocks, and a mounting block is fixedly mounted on the outer surface of the guide rail in a sleeving mode. By arranging the limiting block, the second knob and the fan-shaped bracket mechanism, the legs of a patient are supported by the fan-shaped bracket, and the legs of the patient are fixed by twisting the second knob and driving the fan-shaped bracket by the second knob, so that the legs with different thicknesses can be fixed, and magnetic resonance detection is facilitated; the knee joint of the patient cannot incline leftwards and rightwards, and errors of examination data are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic resonance examination, in particular to an adjustable knee joint fixing device for magnetic resonance examination. Background Art

[0002] Magnetic resonance imaging has the highest soft tissue contrast resolution, is non-invasive, has no radiation hazards, has a large amount of information, and can directly perform imaging in any orientation, which can achieve one-stop inspection. Clinical physicians use MRI images to diagnose patients' diseases. In addition to the physician's own clinical experience, it is also closely related to the amount of information contained in the image. High-quality MRI images should have the characteristics of high signal-to-noise ratio, high contrast, high resolution, and precise positioning. At the same time, the image should be free of artifacts, deformation, unevenness, and blur, and can accurately display anatomical structures and pathological changes, providing valuable information for clinical diagnosis.

[0003] In the prior art, during the MRI examination of the knee joint, the patient needs to lie flat on the MRI examination bed, follow the instructions of the medical staff, adjust the knee joint at various angles, and maintain the same position for a certain period of time. The patient's legs cannot be supported or limited, which may cause the patient's knee joint to shake and tilt, resulting in errors in the examination data. The overall applicability is poor, and it may also cause discomfort to the patient during use. Utility Model Content

[0004] The technical problem to be solved by the utility model is that during the MRI examination of the knee joint, the patient needs to lie flat on the MRI examination bed, follow the instructions of the medical staff, adjust the knee joint at various angles, and maintain the same state for a certain period of time. The patient's legs cannot be supported and limited, which may cause the patient's knee joint to shake and produce tilt displacement, resulting in errors in the examination data. The overall practicality is poor and it may also cause discomfort to the patient during use.

[0005] To solve the above technical problems, a technical solution adopted by the utility model is: to provide an adjustable knee joint fixation device for magnetic resonance examination, including a base, two second slide grooves are fixedly installed on the top of the base, slide plates are slidably installed inside the two second slide grooves, mounting seats are fixedly installed on the tops of the two slide plates, connecting blocks are fixedly installed on both sides of the surfaces of the two mounting seats, a guide rail is fixedly installed between the two connecting blocks, a mounting block is fixedly installed on the outer surface of the guide rail, a sliding block is slidably installed on the outer surface of the guide rail away from the mounting block, two first brackets are fixedly installed on the top of the mounting block, a second connecting column is fixedly installed between the two first brackets, a first supporting plate is rotatably installed on the outer surface of the second connecting column, two second brackets are fixedly installed on the top of the sliding block, a first connecting column is rotatably installed between the two second brackets, a second supporting plate is fixedly connected to the outer surface of the first connecting column, and a rotating shaft is rotatably connected between the second supporting plate and the first supporting plate; the angle of the patient's knee joint can be conveniently adjusted.

[0006] One side of the surface of the first support plate and the second support plate are fixedly connected with a fan-shaped bracket, and two first screw holes are provided on the surface of the two fan-shaped brackets. The inner walls of the two first screw holes are threadedly installed with second knobs, and one end of the two second knobs extends through the external rotation connection limited block of the fan-shaped bracket, so as to clamp the knee joints of different patients.

[0007] Preferably, two first slide grooves are provided on the top of the mounting seat, and a plurality of second screw holes are provided at the bottom of the two first slide grooves. Positioning blocks are slidably installed on the inner side walls of the two first slide grooves, and one surface side of the two positioning blocks is fixedly connected to one surface side of the slider. A screw is threadedly installed on the surface of the positioning block, and one end of the screw is threadedly installed into the corresponding second screw hole to fix the angle.

[0008] Preferably, a square slot is provided on the inner side wall of the skateboard, a first knob is rotatably installed on one side of the surface of the skateboard, one end of the first knob extends through and extends to the interior of the skateboard where a cam is fixedly installed, and two limit columns are slidably installed on the inner side wall of the square slot, which can control the two limit columns to move to both sides.

[0009] Preferably, a spring is fixedly installed between the two limit posts, so that the two limit posts can automatically move toward the middle.

[0010] Preferably, the inner side walls of the two second slide grooves are each provided with a plurality of positioning holes, and one end of the two limit columns is installed in the corresponding positioning holes to limit the position of the slide plate.

[0011] The beneficial effects of the utility model are as follows:

[0012] 1. The utility model provides a limit block, a second knob and a fan-shaped bracket mechanism, and uses the fan-shaped bracket to support the patient's legs. By twisting the second knob, the second knob drives the fan-shaped bracket to fix the patient's legs. Legs of different thicknesses can be fixed, which is convenient for magnetic resonance imaging, so that the patient's knee joint will not tilt left and right, avoiding errors in inspection data.

[0013] 2. The utility model sets up mechanisms such as sliders, guide rails and rotating shafts, uses the slider to drive the second support plate and the first support plate to move along the guide rails, and changes the angles of the second support plate and the first support plate through the rotating shaft. The knee joint can be adjusted to various angles at any time. Even if the patient's legs are inconvenient to move, the patient's legs can be supported to maintain the same state, which is more convenient for magnetic resonance imaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the appearance of an adjustable knee joint fixation device for magnetic resonance examination according to the utility model;

[0015] Figure 2 It is a partial stereoscopic diagram of an adjustable knee joint fixation device for magnetic resonance examination according to the utility model;

[0016] Figure 3 The utility model is a schematic diagram of the internal structure of a slide plate of an adjustable knee joint fixation device for magnetic resonance examination.

[0017] In the figure: 1, base; 2, second slide groove; 3, slide plate; 4, first knob; 5, mounting seat; 6, first slide groove; 7, second screw hole; 8, mounting block; 9, first bracket; 10, first support plate; 11, fan-shaped bracket; 12, limit block; 13, second knob; 14, rotating shaft; 15, second support plate; 16, first connecting column; 17, second connecting column; 18, connecting block; 19, guide rail; 20, slider; 21, positioning block; 22, screw; 23, spring; 24, cam; 25, limit column. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0019] See also Figure 1 and Figure 2, an adjustable knee joint fixation device for magnetic resonance examination, comprising a base 1, two second slide grooves 2 are fixedly installed on the top of the base 1, slide plates 3 are slidably installed inside the two second slide grooves 2, mounting seats 5 are fixedly installed on the tops of the two slide plates 3, connecting blocks 18 are fixedly installed on both sides of the surfaces of the two mounting seats 5, a guide rail 19 is fixedly installed between the two connecting blocks 18, a mounting block 8 is fixedly installed on the outer surface of the guide rail 19, a sliding block 20 is slidably installed on the outer surface of the guide rail 19 away from the mounting block 8, two first brackets 9 are fixedly installed on the top of the mounting block 8, a second connecting column 17 is fixedly installed between the two first brackets 9, a first supporting plate 10 is rotatably installed on the outer surface of the second connecting column 17, two second brackets are fixedly installed on the top of the sliding block 20, a first connecting column 16 is rotatably installed between the two second brackets, a second supporting plate 15 is fixedly connected to the outer surface of the first connecting column 16, and a rotating shaft 14 is rotatably connected between the second supporting plate 15 and the first supporting plate 10, so as to facilitate the adjustment of the angle of the patient's knee joint;

[0020] A fan-shaped bracket 11 is fixedly connected to one side of the surface of the first support plate 10 and the second support plate 15. Two first screw holes are provided on the surface of the two fan-shaped brackets 11. The inner walls of the two first screw holes are threadedly installed with second knobs 13. One end of the two second knobs 13 extends through the external rotation connection limit block 12 of the fan-shaped bracket 11, so as to clamp the knee joints of different patients.

[0021] like Figure 2 and Figure 3 As shown, a square notch is provided on the inner side wall of the slide plate 3, and a first knob 4 is rotatably installed on one side of the surface of the slide plate 3, and one end of the first knob 4 extends through and extends to the inside of the slide plate 3 and is fixedly installed with a cam 24, and the inner side wall of the square notch is slidably installed with two limit columns 25, which can control the two limit columns 25 to move to both sides, and the inner side walls of the two second slide grooves 2 are provided with a plurality of positioning card holes, and one end of the two limit columns 25 is installed in the corresponding positioning card holes to limit the position of the slide plate 3, and the top of the mounting seat 5 is provided with two first slide grooves 6, and the bottom of the two first slide grooves 6 is provided with a plurality of second screw holes 7, and the inner side walls of the two first slide grooves 6 are slidably installed with positioning blocks 21, and one side of the surface of the two positioning blocks 21 is fixedly connected to one side of the surface of the slider 20, and a screw 22 is threadedly installed on the surface of the positioning block 21, and one end of the screw 22 is threadedly installed in the corresponding second screw hole 7 to fix the angle, and a spring 23 is fixedly installed between the two limit columns 25, so that the two limit columns 25 can automatically move toward the middle.

[0022] When the utility model is in use, the mounting seat 5 is mounted on the slide plate 3, the patient lies on the base 1, and the first knob 4 is twisted to drive the cam 24 to rotate. At the same time, the spring 23 drives the limiting column 25 to move toward the middle, so that the mounting seat 5 can move in the second slide groove 2. The mounting seat 5 is adjusted to a position convenient for the patient to use. The first knob 4 is twisted again, and the first knob 4 drives the cam 24 to rotate. The cam 24 drives the limiting column 25 to move, so that the limiting column 25 is closely fitted with the inner wall of the second slide groove 2, and the mounting seat 5 is fixed. The patient's legs are placed inside the fan-shaped bracket 11, and the second knob 13 is twisted. The second knob 13 is driven The movable limit block 12 moves to clamp the patient's leg inside the fan-shaped bracket 11 and fix it firmly. The screw 22 is pulled out from the second screw hole 7 to push the slider 20. The slider 20 drives the spring 23 to move. The spring 23 drives the first connecting column 16 to move. The first connecting column 16 drives the second support plate 15 to rotate. The second support plate 15 drives the rotating shaft 14 to rotate. The rotating shaft 14 drives the first support plate 10 to rotate on the second connecting column 17, so that the patient's knee joint can be adjusted to a suitable angle for magnetic resonance imaging. After the angle adjustment is completed, the screw 22 is placed in the corresponding second screw hole 7 to fix the angle.

[0023] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An adjustable knee joint fixation device for magnetic resonance imaging, comprising a base (1), characterized in that: Two second slide grooves (2) are fixedly installed on the top of the base (1), and slide plates (3) are slidably installed inside the two second slide grooves (2). Mounting seats (5) are fixedly installed on the tops of the two slide plates (3). Connecting blocks (18) are fixedly installed on both sides of the surfaces of the two mounting seats (5). A guide rail (19) is fixedly installed between the two connecting blocks (18). A mounting block (8) is fixedly installed on the outer surface of the guide rail (19). A sliding block (20) is slidably installed on the outer surface of the guide rail (19) away from the mounting block (8). Two first brackets (9) are fixedly installed on the top of the block (8), a second connecting column (17) is fixedly installed between the two first brackets (9), a first support plate (10) is rotatably mounted on the outer surface of the second connecting column (17), two second brackets are fixedly installed on the top of the slider (20), a first connecting column (16) is rotatably mounted between the two second brackets, a second support plate (15) is fixedly connected to the outer surface of the first connecting column (16), and a rotating shaft (14) is rotatably connected between the second support plate (15) and the first support plate (10); A fan-shaped bracket (11) is fixedly connected to one side of the surface of the first support plate (10) and the second support plate (15), and two first screw holes are provided on the surface of the two fan-shaped brackets (11). The inner side walls of the two first screw holes are threadedly mounted with second knobs (13), and one end of the two second knobs (13) extends through and extends to the external rotation connection limit block (12) of the fan-shaped bracket (11).

2. The adjustable knee joint fixation device for magnetic resonance imaging according to claim 1, characterized in that: Two first slide grooves (6) are provided on the top of the mounting seat (5), and a plurality of second screw holes (7) are provided at the bottom of the two first slide grooves (6). Positioning blocks (21) are slidably installed on the inner side walls of the two first slide grooves (6), and one side of the surface of the two positioning blocks (21) is fixedly connected to one side of the surface of the slider (20). A screw (22) is threadedly installed on the surface of the positioning block (21), and one end of the screw (22) is threadedly installed in the corresponding second screw hole (7).

3. The adjustable knee joint fixation device for magnetic resonance imaging according to claim 2, characterized in that: The inner side wall of the slide plate (3) is provided with a square slot, a first knob (4) is rotatably mounted on one side of the surface of the slide plate (3), one end of the first knob (4) extends through and into the interior of the slide plate (3) and a cam (24) is fixedly mounted thereon, and two limit posts (25) are slidably mounted on the inner side wall of the square slot.

4. The adjustable knee joint fixation device for magnetic resonance imaging according to claim 3, characterized in that: A spring (23) is fixedly installed between the two limiting columns (25).

5. The adjustable knee joint fixation device for magnetic resonance imaging according to claim 4, characterized in that: The inner side walls of the two second sliding grooves (2) are each provided with a plurality of positioning holes, and one end of the two limiting columns (25) is installed in the corresponding positioning holes.

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