Body surface positioning device special for magnetic resonance lymphatic vessel imaging

Abstract

The invention relates to the technical field of body surface positioning equipment, and discloses a special body surface positioning device for magnetic resonance lymphatic vessel imaging, comprising: a positioning tube body, which is elastic and hollow; the multiple positioning columns are located in the positioning pipe body, and the multiple positioning columns are elastic and are arranged at intervals; and the fixing belts are used for fixing the deformed positioning pipe body. According to the device, the hollow positioning tube body is arranged, the positioning columns are arranged in the positioning tube body and filled with the magnetic resonance developing liquid, the positioning columns change local liquid distribution, signal points or lines different from the main body of the tube body are formed in an image, and a doctor can mark the position relative to the lymphatic vessel in the image; the body surface layer where the lymphatic vessel is located can be determined, and the positioning accuracy of the lymphatic position during magnetic resonance lymphatic vessel imaging is improved.

Description

Technical Field

[0001] This invention relates to the field of body surface positioning equipment technology, specifically a body surface positioning device for magnetic resonance lymphatic vessel imaging. Background Technology

[0002] Magnetic resonance lymphangiography is currently the core imaging technique for the clinical diagnosis of lymphatic diseases (such as lymphatic obstruction, lymphorrhea, lymphoma, etc.). It clearly presents the course, morphology and functional status of lymphatic vessels by acquiring magnetic resonance signals of contrast agents within the lymphatic vessels. Since magnetic resonance images are tomographic images, the scanning area needs to be marked by a body surface positioning device to ensure that doctors can accurately correspond the lymphatic vessel tomography in the image with the actual anatomical location of the human body, thereby improving diagnostic accuracy.

[0003] A search revealed a patent, CN209864076U, which discloses a special water strip for magnetic resonance imaging (MRI) surface positioning. The water strip body includes a row of spaced-apart positioning water strips, with adjacent water strips connected by a movable buckle. The buckle includes a connector plug installed at the upper end of the water strip and a connector seat installed at the lower end. This invention can be placed in locations where it is difficult to lay flat, such as the psoas muscle. Each positioning water strip is detachable, allowing the number of water strips to be used to accommodate patients of different body types. The connection between the water strips is achieved through the movable buckle, giving the device a shape-changing effect. Furthermore, the water strip body can be restrained by binding, increasing positioning stability. During detection, the location of lesions can be quickly identified, leading to rapid confirmation of treatment plans. This convenient and efficient method is worthy of promotion.

[0004] The aforementioned patents have significant beneficial effects, but in practical application, they still have the following shortcomings: The aforementioned comparative documents improve the accuracy of the correspondence between the lymphatic vessel cross-section in the image and the actual anatomical location of the human body by setting positioning water strips. However, in reality, the volume of the filling liquid is small, and the signal intensity generated in the magnetic resonance magnetic field is weak, resulting in blurred imaging of the positioning element in the scanned image, or even broken images. Doctors find it difficult to accurately identify the positioning boundary, and the effect of this body surface positioning device still needs to be improved. Therefore, there is an urgent need in the field to improve the body surface positioning device for magnetic resonance lymphatic vessel imaging, so as to solve the defects of the existing technology. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a dedicated surface positioning device for magnetic resonance lymphatic vessel imaging, which improves the accuracy of lymph node location during magnetic resonance lymphatic vessel imaging.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dedicated surface positioning device for magnetic resonance lymphatic vessel imaging, comprising: Positioning tube: The positioning tube is elastic and hollow; Positioning posts: There are several positioning posts located inside the positioning tube, and each of the positioning posts is elastic and spaced apart; Fixing straps: There are several fixing straps used to fix the deformed positioning tube body.

[0007] Preferably, the positioning tube body includes several positioning combination tubes, and the several positioning combination tubes are elastic and can be connected end to end.

[0008] Preferably, the two ends of the positioning combination tube are respectively provided with a first connecting ring and a second connecting ring, the first connecting ring and the second connecting ring are threaded together and are sealed, and a one-way valve body is fixedly installed at the ends of both positioning combination tubes.

[0009] Preferably, a plurality of elastic fixing rods are fixedly connected to both sides of the positioning post, and the elastic fixing rods are elastic.

[0010] Preferably, the positioning assembly tube has two limiting grooves, which are adapted to the elastic fixing rod.

[0011] Preferably, the fixing belt has several arc-shaped snap rings on its side, and the arc-shaped snap rings are adapted to the positioning combination tube.

[0012] Preferably, the fixing strap has Velcro straps that fit on both sides, and the fixing strap is elastic and the two ends are connected by Velcro straps.

[0013] Preferably, the positioning posts have different shapes or have graphic structures on their sides, and the graphic structures on the sides of the positioning posts are different for each of them. The graphic structures include scale marks, letter marks, number marks or geometric marks.

[0014] Preferably, the side of the arc-shaped snap ring is fixedly connected to a snap post, and the fixing band is provided with snap holes that are adapted to the snap post, and the number of snap holes is several.

[0015] Preferably, both the first connecting ring and the second connecting ring are provided with sealing rings on their sides, and the sealing rings are elastic.

[0016] To address the shortcomings of existing technologies, this invention provides a dedicated surface positioning device for magnetic resonance lymphatic vessel imaging, overcoming the deficiencies of existing technologies. The beneficial effects of this invention are as follows: In this invention, a hollow positioning tube is provided, which contains several positioning columns and is filled with magnetic resonance imaging fluid. The positioning columns change the local fluid distribution and form signal points or lines in the image that are different from the main body of the tube. By marking the relative position of the lymphatic vessels in the image, the doctor can clearly identify the surface layer where the lymphatic vessels are located, thus improving the accuracy of lymphatic vessel location during magnetic resonance lymphatic vessel imaging.

[0017] In this invention, by setting several positioning posts of different shapes or having graphic structures on their sides, and by setting several positioning posts of different shapes or having different graphic structures on their sides, it is easy to quickly identify the layers and further improve the positioning effect of the positioning device.

[0018] In this invention, a positioning tube body is formed by connecting a first connecting ring and a second connecting ring. Positioning tube bodies of different lengths can be combined according to the detection situation, thereby improving the applicability of the positioning device.

[0019] In this invention, an elastic fixing rod is set and engaged in the limiting groove to limit the positioning column within the positioning assembly tube, which facilitates the installation of the positioning column and subsequent disassembly and maintenance.

[0020] In this invention, by setting an arc-shaped snap ring to snap onto the side of the positioning assembly tube, and by inserting the arc-shaped snap ring into the snap hole at the appropriate position on the fixing belt through a snap pin, the positioning assembly tube can be fixed at different positions, thereby improving the applicability of the positioning device.

[0021] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0023] Figure 1 This is a schematic diagram of the positioning tube body in this invention; Figure 2 This is a partial cross-sectional view of the positioning tube body in this invention. Figure 3 This is a partial cross-sectional structural schematic diagram of several positioning combination tubes in this invention; Figure 4 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 5 for Figure 2Enlarged structural diagram at point B; Figure 6 This is a schematic diagram of the structure of several positioning posts with different shapes in this invention.

[0024] In the diagram: 1. Positioning tube body; 2. Positioning post; 3. Fixing strap; 4. Positioning combination tube; 5. First connecting ring; 6. Second connecting ring; 7. Elastic fixing rod; 8. Limiting groove; 9. Arc-shaped snap ring; 10. Snap post; 11. Snap hole; 12. Sealing ring. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1-6 A surface positioning device for magnetic resonance lymphatic vessel imaging includes: a positioning tube 1, which is elastic and hollow; positioning posts 2, which are a plurality of which are located inside the positioning tube 1, and are elastic and spaced apart; and a fixing strap 3, which is a plurality of which is used to fix the deformed positioning tube 1, with Velcro straps on both ends of the fixing strap 3, and the fixing strap 3 is elastic and connected to the two ends by Velcro straps.

[0027] Specifically, the positioning tube 1 is a flexible tubular structure. Both the positioning tube 1 and the positioning column 2 are made of medical-grade silicone or polyvinyl chloride (PVC). Both materials are magnetically compatible, free from magnetic field interference, and resistant to disinfection and highly flexible. The inner diameter of the positioning tube 1 is 8-12 mm, preferably 10 mm, or approximately 1 cm. The positioning tube 1 is hollow inside to contain the magnetic resonance imaging liquid, preferably sterile distilled water or 0.9% physiological saline. Both liquids have high signal intensity and clear imaging in T2-weighted magnetic resonance images, and are biocompatible with human tissues with no risk of allergies. When performing magnetic resonance lymphatic vessel imaging on the patient's leg, the positioning tube 1 is secured using a fastening strap 3 with Velcro. Figure 1 As shown, the positioning tube is fixed on both sides of the patient's legs. After the patient enters the MRI machine, the distilled water in the positioning tube 1 generates a high signal in the T2-weighted image, forming a clear linear image. The positioning column 2 changes the local fluid distribution, forming signal points or lines in the image that are different from the main body of the tube, corresponding to markers such as "L1-L10". By observing the relative position of the markers in the image with the lymphatic vessels, the doctor can clearly identify the surface level where the lymphatic vessels are located, thus improving the accuracy of lymphatic vessel location during MRI lymphatic vessel imaging.

[0028] As a technical optimization of the present invention, the positioning tube body 1 includes a plurality of positioning combination tubes 4. The plurality of positioning combination tubes 4 are elastic and can be connected end to end. The two ends of the positioning combination tubes 4 are respectively provided with a first connecting ring 5 and a second connecting ring 6. The first connecting ring 5 and the second connecting ring 6 are threaded together and are sealed. A one-way valve body 13 is fixedly installed at the ends of the two positioning combination tubes 4. The sides of the first connecting ring 5 and the second connecting ring 6 are provided with sealing rings 12, which are elastic.

[0029] Specifically, according to the patient's required detection location, an appropriate number of positioning combination tubes 4 are selected and connected. An elastic sealing ring 12 is embedded at the opposite ends of two adjacent positioning combination tubes 4 to ensure the sealing effect after several positioning combination tubes 4 are connected. The first connecting ring 5 and the second connecting ring 6 are threaded to connect two adjacent positioning combination tubes 4. The ends of the positioning combination tubes 4 located at both ends of the positioning tube body 1 are fixedly connected to the one-way valve body 13. Magnetic resonance imaging liquid is added into the positioning tube body 1 through the one-way valve body 13.

[0030] As a technical optimization of the present invention, several elastic fixing rods 7 are fixedly connected to both sides of the positioning post 2. The elastic fixing rods 7 are elastic. Two limiting grooves 8 are opened in the positioning combination tube 4. The limiting grooves 8 are adapted to the elastic fixing rods 7. When installing the positioning post 2, the positioning post 2 is inserted into the positioning combination tube 4 and continuously pushed into the positioning combination tube 4. After the several elastic fixing rods 7 are engaged in the limiting grooves 8, the positioning post 2 is positioned and fixed. When the positioning post 2 needs to be disassembled, the positioning post 2 is pushed with force to deform the elastic fixing rods 7, and the positioning post 2 can be pushed out, which facilitates the installation of the positioning post 2 and subsequent disassembly and maintenance.

[0031] As a technical optimization of the present invention, the fixing band 3 is provided with a plurality of arc-shaped locking rings 9 on its side. The arc-shaped locking rings 9 are adapted to the positioning combination tube 4. The side of the arc-shaped locking rings 9 is fixedly connected with locking posts 10. The fixing band 3 is provided with locking holes 11 adapted to the locking posts 10. There are a plurality of locking holes 11. By locking the positioning tube 1 with a plurality of locking posts 10, and connecting the two ends of the fixing band 3, the positioning tube 1 can be positioned and fixed. Moreover, according to the position to be detected by the patient, the locking hole 11 with the appropriate position can be selected, and the locking post 10 can be inserted into the locking hole 11 to position the positioning tube 1, thereby improving the applicability of the positioning device.

[0032] As a technical optimization of the present invention, several positioning posts 2 have different shapes or have graphic structures on their sides, such as... Figure 6As shown, several positioning posts 2 can be set as different circles, rectangles or triangles, etc. Several positioning posts 2 of different shapes can be set in a cycle. Several positioning posts 2 can also be set with different distinguishable graphic structures on their sides. The graphic structures on the sides are different. The graphic structures include scale marks, letter marks, number marks or geometric marks. It is preferred to combine marks, such as setting a circular scale line every 5cm, and marking the letters "L1-L10" or the numbers "1-10" next to the scale line. At the same time, at key positions such as the two ends and the midpoint, triangular or square geometric shapes are set to facilitate quick identification of the layer and further improve the positioning effect of the positioning device.

[0033] Finally, it should be noted that in the description of this invention, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 invention.

[0034] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A surface positioning device for magnetic resonance lymphatic vessel imaging, characterized in that, include: Positioning tube (1): The positioning tube (1) is elastic and hollow; Positioning post (2): There are several positioning posts (2) located inside the positioning tube (1), and the several positioning posts (2) are elastic and spaced apart; Fixing strap (3): The number of fixing straps (3) is several and they are used to fix the deformed positioning tube (1).

2. The surface positioning device for magnetic resonance lymphatic vessel imaging according to claim 1, characterized in that, The positioning tube body (1) includes several positioning combination tubes (4), and the several positioning combination tubes (4) are elastic and can be connected end to end.

3. The surface positioning device for magnetic resonance lymphatic vessel imaging according to claim 2, characterized in that, The positioning combination tube (4) is provided with a first connecting ring (5) and a second connecting ring (6) at both ends. The first connecting ring (5) and the second connecting ring (6) are threaded together and sealed. One-way valve bodies (13) are fixedly installed at both ends of the two positioning combination tubes (4).

4. The surface positioning device for magnetic resonance lymphatic vessel imaging according to claim 2, characterized in that, The positioning column (2) has several elastic fixing rods (7) fixedly connected to both sides, and the elastic fixing rods (7) are elastic.

5. The surface positioning device for magnetic resonance lymphatic vessel imaging according to claim 4, characterized in that, The positioning combination tube (4) has two limiting grooves (8) inside, and the limiting grooves (8) are adapted to the elastic fixing rod (7).

6. The surface positioning device for magnetic resonance lymphatic vessel imaging according to claim 1, characterized in that, The fixing belt (3) has several arc-shaped snap rings (9) on its side, and the arc-shaped snap rings (9) are adapted to the positioning combination tube (4).

7. The surface positioning device for magnetic resonance lymphatic vessel imaging according to claim 1, characterized in that, The fixing strap (3) has Velcro straps that fit on both sides at both ends. The fixing strap (3) is elastic and the two ends are connected by Velcro straps.

8. The surface positioning device for magnetic resonance lymphatic vessel imaging according to claim 1, characterized in that, The positioning posts (2) are of different shapes or have graphic structures on their sides. The graphic structures on the sides of the positioning posts (2) are different from each other. The graphic structures include scale marks, letter marks, number marks or geometric marks.

9. The surface positioning device for magnetic resonance lymphatic vessel imaging according to claim 6, characterized in that, The arc-shaped snap ring (9) is fixedly connected to a snap post (10) on its side. The fixing band (3) is provided with snap holes (11) that are adapted to the snap post (10). The number of snap holes (11) is several.

10. The surface positioning device for magnetic resonance lymphatic vessel imaging according to claim 3, characterized in that, Both the first connecting ring (5) and the second connecting ring (6) are provided with sealing rings (12) on their sides, and the sealing rings (12) are elastic.

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