Nmr fixture for small pigs

Abstract

The utility model discloses a small pig nuclear magnetic resonance fixing device, include: the support plate of the top of being equipped with the limiting groove, leg part limiting subassembly, leg part limiting subassembly places in the top of support plate, leg part limiting subassembly includes the movable slide that can adjust and installs support plate outside, the top of movable slide is fixedly connected with the support groove, for placing and limiting pig leg, one side of support groove sets up extrusion fixed unit, for adaptive fixed pig leg, the beneficial effects of the utility model are: the support groove inclination of leg part limiting subassembly sets up, and can adjust and install through movable slide, can adjust support groove position according to the length of different pig body and the position of pig leg, ensure that pig leg is placed reasonably, extrusion fixed unit utilizes magic tape no.

Description

Technical Field

[0001] This utility model relates to the field of nuclear magnetic resonance fixation technology, specifically a small-scale pig nuclear magnetic resonance fixation device. Background Technology

[0002] Bama miniature pigs have important application value in experimental nuclear magnetic resonance (NMR) research. They are of moderate size and have physiological characteristics similar to humans. They have also shown unique advantages in the construction of various disease models and the verification of imaging technologies. In current experiments, pigs are often fixed to the mobile bed of the NMR equipment with bandages. The bandages rely on friction to maintain fixation. During long-term scans (such as fMRI task mode or dynamic contrast-enhanced scans), the fixation points are prone to slippage due to sweat secretion from the pig, loss of elasticity of the bandages, or operational errors, which will aggravate artifacts. Utility Model Content

[0003] The purpose of this invention is to provide a small porcine nuclear magnetic resonance fixation device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a small porcine MRI fixation device, comprising:

[0005] A support plate with a limiting groove at the top;

[0006] A leg limiting assembly is placed on top of the support plate. The leg limiting assembly includes a movable slide that is adjustablely installed on the outside of the support plate. A support groove is fixedly connected to the top of the movable slide for placing and limiting the pig leg. A compression fixing part is provided on one side of the support groove for adaptively fixing the pig leg.

[0007] A limiting plate is placed on top of the support plate. Velcro straps are provided on both sides of the limiting plate, and an airbag with an arc-shaped structure is installed on the top of the limiting plate.

[0008] A head limiting component is placed at the end of the support plate. The head limiting component includes a clamping block that can be adjusted to be mounted on the top of the support plate. An air bladder is fixed inside the clamping block for inflation and compression fixation.

[0009] Preferably, the movable slide is slidably mounted at both ends of the movable slide, and a slider that cooperates with the limiting groove is fixedly connected inside the movable slide. A fastening screw is threadedly connected to the bottom of the movable slide.

[0010] Preferably, the compression fixing part includes a Velcro strap and an airbag, with the Velcro strap placed on one side of the support groove and the airbag installed inside the support groove.

[0011] Preferably, the head limiting assembly further includes a fixing block fixed to the top of the support plate, a fastening screw three is threadedly connected to the middle of the fixing block, one end of the fastening screw three is rotatably connected to the clamping block, and the bottom of the clamping block is slidably connected to the support plate.

[0012] Preferably, there are two clamping blocks, and the two clamping blocks are symmetrical about the center of the support plate. The clamping blocks have a C-shaped structure.

[0013] Preferably, a base plate is fixedly connected to the bottom of the support plate, and connecting hook plates are fixedly connected to both ends of the base plate. The connecting hook plates have an L-shaped structure, and a fastening screw is threaded to one end of each connecting hook plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: the support groove of the leg limiting component is inclined and can be adjusted by moving the sliding seat, so that the position of the support groove can be adjusted according to the length of different pigs and the position of the pig legs to ensure that the pig legs are placed reasonably; the compression fixing part uses Velcro 1 and air bag 1. Velcro 1 wraps around the pig leg and is glued. Air bag 1 is inflated and expands so that the pig leg is in close contact with the Velcro under the compression action, realizing adaptive fixing of the pig leg and meeting the fixing needs of pig legs of different thicknesses; the limiting plate is made of plastic material and an arc-shaped air bag 2 is installed on the top. After placing the pig's back on top of the limiting plate, fasten the Velcro straps around the pig's belly. Then inflate the airbag to make it expand and fit against the pig's back. The Velcro straps tighten the pig after the airbag expands, which can well accommodate the backs of pigs of different sizes. The clamping block of the head limiting component can be adjusted and installed on the top of the support plate. By rotating the fastening screw, the clamping block moves towards the center to clamp the pig's head. Then inflate the airbag to compress and fix the pig's head. The two clamping blocks are symmetrically arranged and have a C-shaped structure, which can better wrap and fix the pig's head and can accommodate the fixation of pig heads of different sizes and shapes. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the support plate of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the fastening screw three of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the airbag three of this utility model;

[0019] Figure 5 This is a schematic diagram of the support groove of this utility model.

[0020] In the diagram: 1. Base plate; 2. Connecting hook plate; 3. Fastening screw one; 4. Support plate; 5. Limiting groove; 6. Moving slide; 7. Fastening screw two; 8. Supporting groove; 9. Airbag one; 10. Velcro one; 11. Limiting plate; 12. Airbag two; 13. Velcro two; 14. Clamping block; 15. Airbag three; 16. Fastening screw three. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1 , 2 As shown in Figures 3, 4, and 5, this utility model provides a technical solution: a small pig MRI fixation device, comprising: a support plate 4 with a limiting groove 5 at the top; a leg limiting component placed on the top of the support plate 4, the leg limiting component including a movable slide 6 adjustablely installed on the outside of the support plate 4, the top of the movable slide 6 being fixedly connected to an inclined support groove 8 for placing and limiting the pig leg, and a compression fixing part provided on one side of the support groove 8 for adaptively fixing the pig leg; a plastic limiting plate 11 fixedly connected to the top of the support plate 4, with Velcro 13 on both sides of the limiting plate 11, the corresponding surfaces of the Velcro 13 on both sides being hooked and roughened respectively, an arc-shaped airbag 12 installed on the top of the limiting plate 11, one end of the airbag 12 being connected to an inflation connector and a valve through a pipe; and a head limiting component placed at the end of the support plate 4, the head limiting component including a clamping block 14 adjustablely installed on the top of the support plate 4, with an airbag 15 fixedly connected inside the clamping block 14 for inflation compression fixation.

[0023] It should be noted that in this embodiment, the pig's back is placed on top of the limiting plate, and its four legs are placed in the support groove 8 and fixed. It is then fixed by squeezing the fixing part. Then, the Velcro 2 13 is wrapped around the pig's belly, and the hook side with the Velcro 2 13 on both sides is attached to the hair side. Then, the inside of the airbag 2 12 is punched, causing the airbag 2 12 to expand and expand. After the airbag 2 12 expands and fits against the pig's back, the Velcro 2 13 tightens it. The two clamping blocks 14 are moved towards the center, and the pig's head is clamped by the clamping blocks 14. The airbag 3 15 is inflated, and the expansion of the airbag 3 15 squeezes and fixes the pig's head, so that it can be used to fix pig heads of different sizes and shapes.

[0024] In one embodiment, the movable slide 6 is slidably mounted at both ends of the movable slide 6, and a slider that cooperates with the limiting groove 5 is fixedly connected inside the movable slide 6. The bottom of the movable slide 6 is threadedly connected with a fastening screw 7.

[0025] It should be noted that in this embodiment, the support plate 4, the support groove 8, and the clamping block 14 are all made of glass fiber reinforced plastic, and the movable slide 6 and the fastening screw 7 are both made of aluminum. By adjusting the tightness of the fastening screw 7 and the support plate 4, the position of the movable slide 6 can be adjusted so that the outer side of the support groove 8 can be adjusted according to the length of different pig bodies and the position of pig legs.

[0026] In one embodiment, the compression fixing part includes a Velcro 10 and an airbag 9, with the Velcro 10 placed on one side of the support groove 8 and the airbag 9 installed inside the groove of the support groove 8.

[0027] It should be noted that in this embodiment, the top of the support plate 4 is fixed with an air duct and valve that communicate with the airbag 9. The Velcro 10 has a hook side and a rough side on both sides. When fixing the pig leg, the pig leg is placed in the support groove 8, and the Velcro 10 is wrapped around the pig leg and then around the outside of the support groove 8, so that one side of the Velcro 10 is bonded to the other side. By inflating the airbag 9, the airbag 9 expands inside the support groove 8, so that the pig leg is in close contact with the Velcro 10 under the action of compression, thereby fixing the pig leg.

[0028] In one embodiment, the head limiting assembly further includes a fixing block fixed to the top of the support plate 4. The middle of the fixing block is threaded with a fastening screw 16. One end of the fastening screw 16 is rotatably connected to the clamping block 14. The bottom of the clamping block 14 is slidably connected to the support plate 4. There are two clamping blocks 14, and the two clamping blocks 14 are symmetrical about the center of the support plate 4. The clamping blocks 14 have a C-shaped structure.

[0029] It should be noted that in this embodiment, both the fastening screw 3 16 and the clamping block 14 are made of aluminum. The fastening screw 3 16 is rotatably connected to the clamping block 14. Under the threads of the fastening screw 3 16 and the clamping block 14, the clamping block 14 moves towards the center, thereby squeezing and fixing the pig head through the two clamping blocks 14. After the adjustment is completed, the airbag 3 15 is inflated, and the expansion of the airbag 3 15 squeezes and fixes the pig head between the two clamping blocks 14.

[0030] In one embodiment, a base plate 1 is fixedly connected to the bottom of the support plate 4, and a connecting hook plate 2 is fixedly connected to both ends of the base plate 1. The connecting hook plate 2 has an L-shaped structure, and a fastening screw 3 is threadedly connected to one end of the connecting hook plate 2.

[0031] It should be noted that in this embodiment, the base plate 1, the fastening screw 3, and the connecting hook plate 2 are all made of aluminum. One end of the base plate 1 is hooked to one end of the moving bed of the MRI machine, and the connecting hook plate 2 is hooked to the other end of the moving bed. By rotating the fastening screw 3, it is pressed against the end of the moving bed, thereby connecting and fixing the base plate 1 to the moving bed. The height and horizontal position of the base plate 1 are adjusted by the MRI machine.

[0032] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0033] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A small-scale porcine MRI fixation device, characterized in that: include: A support plate (4) with a limiting groove (5) is provided at the top; The leg limiting component is placed on the top of the support plate (4). The leg limiting component includes a movable slide (6) that is adjustablely installed on the outside of the support plate (4). The top of the movable slide (6) is fixedly connected to a support groove (8) for placing and limiting the pig leg. A squeezing and fixing part is provided on one side of the support groove (8) for adaptively fixing the pig leg. The limiting plate (11) is placed on the top of the support plate (4). Velcro straps (13) are provided on both sides of the limiting plate (11). An airbag (12) with an arc structure is installed on the top of the limiting plate (11). The head limiting component is located at the end of the support plate (4). The head limiting component includes a clamping block (14) that can be adjusted to install on the top of the support plate (4). An airbag (15) is fixed inside the clamping block (14) for inflation and compression fixation.

2. The miniature porcine MRI fixation device according to claim 1, characterized in that: The movable slide (6) is slidably installed at both ends of the movable slide (6). The movable slide (6) has a slider that cooperates with the limiting groove (5) fixed inside. The bottom of the movable slide (6) is threadedly connected to a fastening screw (7).

3. The miniature porcine MRI fixation device according to claim 1, characterized in that: The compression fixing part includes a Velcro 1 (10) and an airbag 1 (9). The Velcro 1 (10) is placed on one side of the support groove (8), and the airbag 1 (9) is installed inside the groove of the support groove (8).

4. The miniature porcine MRI fixation device according to claim 1, characterized in that: The head limiting assembly also includes a fixing block fixed to the top of the support plate (4), and a fastening screw three (16) is threadedly connected to the middle of the fixing block. One end of the fastening screw three (16) is rotatably connected to the clamping block (14), and the bottom of the clamping block (14) is slidably connected to the support plate (4).

5. The miniature porcine MRI fixation device according to claim 4, characterized in that: There are two clamping blocks (14), and the two clamping blocks (14) are symmetrical about the center of the support plate (4). The clamping blocks (14) are C-shaped.

6. The miniature porcine MRI fixation device according to claim 1, characterized in that: The bottom of the support plate (4) is fixedly connected to a base plate (1), and both ends of the base plate (1) are fixedly connected to a connecting hook plate (2). The connecting hook plate (2) has an L-shaped structure, and one end of the connecting hook plate (2) is threadedly connected to a fastening screw (3).

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