High planarity medical device stent

Abstract

The utility model aims at providing a kind of high flatness medical instrument support, for carrying circuit board, including body and snap ring, body integrally formed with protruding post, protruding post is provided with card station, snap ring integrally formed with inclined top portion, snap ring is set on protruding post, snap ring rotates with the axis of protruding post as center, to drive inclined top and card station abut, so that snap ring and body jointly clamp circuit board.Such, fundamentally, the problem such as that screw hits circuit board and causes electronic component soldering point to fall off, pin deformation, line fracture is eliminated, and the structure and functional integrity of circuit board and component are guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of medical devices, and in particular to a high-flatness medical device stent. Background Technology

[0002] In the field of modern medical devices, stents, as core load-bearing components, are widely used in various precision instruments such as ultrasound diagnostic instruments, electrocardiogram monitors, and in vitro diagnostic equipment. Their main function is to provide a stable mounting reference and structural support for key components such as circuit boards, sensors, and display modules. Because medical devices have extremely high requirements for operational accuracy, signal stability, and equipment reliability, stents not only need sufficient mechanical strength to withstand the weight of the components and minor vibrations during equipment operation, but also need to meet stringent high flatness requirements to ensure the precise mounting posture of components such as circuit boards. This avoids problems such as signal transmission interference, poor heat dissipation, or mechanical jamming caused by tilted mounting surfaces, thus ensuring the diagnostic accuracy and clinical safety of medical devices.

[0003] However, existing stents have the following shortcomings in practical use: Most mainstream high-flatness medical device stents on the market use screws for fastening circuit boards and other components. When using a screwdriver to tighten screws, it is difficult for operators to maintain absolute coaxiality between the screwdriver and the screw axis. During installation or removal, if there is a deviation in force, the screwdriver is prone to slippage or wobble, causing the screw to deviate from its intended installation trajectory under uneven force. Its end or side edge may directly impact the circuit board, which integrates numerous precision electronic components (such as resistors, capacitors, and chips) and delicate conductive lines, and most components are not designed to withstand impacts. The impact force from the screw can cause minor issues like solder joint detachment and pin deformation on the circuit board surface, or more serious issues like broken conductive lines and damaged chip packages, directly leading to circuit board malfunction. Therefore, this application proposes a high-flatness medical device stent. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-flatness medical device support that can prevent screws from hitting the circuit board due to uneven force during the screw-tightening process, thus avoiding the failure of the circuit board function.

[0005] The objective of this utility model is achieved through the following technical solution: A high-flatness medical device support for supporting circuit boards includes: The main body, integrally formed with a protruding post, has a retaining platform on the protruding post; and The retaining ring has an integrally formed sloping top and is sleeved on the protrusion. The retaining ring rotates around the axis of the protrusion so that when the sloping top abuts against the retaining platform, the retaining ring and the body together clamp the circuit board.

[0006] Optionally, the card platform has a positioning groove, and a positioning block is provided on the sloping top, the positioning block engaging with the positioning groove.

[0007] Optionally, the retaining ring has a through hole, the inner wall of the through hole includes two parallel portions and two arc-shaped portions, the two parallel portions are arranged opposite each other, the two arc-shaped portions are respectively located on both sides of the parallel portions, and the interval between the two parallel portions is the same as the diameter of the protrusion, and the interval between the two arc-shaped portions is greater than the diameter of the protrusion.

[0008] Optionally, the shape of the card platform is consistent with the shape of the perforation.

[0009] Optionally, the protruding post is provided with a right-angled portion, one side of the right-angled portion is close to the card table, and any one of the parallel portions is parallel to one side of the right-angled portion, so that the parallel portion abuts against the card table.

[0010] Optionally, the protrusion is further provided with a side groove, and the circuit board is provided with a side block, which is slidably engaged with the side groove.

[0011] Optionally, the body is also integrally formed with a number of intersecting reinforcing ribs.

[0012] Optionally, the body is also integrally formed with a plurality of back strips, each of which is parallel to each other and arranged continuously.

[0013] Compared with the prior art, the present invention has at least the following advantages: This utility model relates to a high-flatness medical device support, in which a retaining ring is fitted onto a protruding post through a perforation. Simply rotating the retaining ring around the axis of the protruding post causes the inclined top to gradually abut against the mounting platform. The inclined structure of the inclined top converts the rotational force into a clamping force on the circuit board, allowing the retaining ring and the main body to securely hold the circuit board. The entire process requires no additional tools such as screwdrivers, avoiding the risk of component impact caused by tool force deviations (such as screwdriver slippage or wobble). Simultaneously, the main body adopts a one-piece molded metal structure, coupled with crisscrossing reinforcing ribs and multiple triangular cross-section back strips, eliminating flatness deviations caused by splicing processes, enhancing bending and warping resistance, and providing a durable flat mounting benchmark for the circuit board. Thus, it fundamentally eliminates problems such as screw impacts on the circuit board causing solder joint detachment, pin deformation, and circuit breakage, ensuring the structural and functional integrity of the circuit board and components. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of a high-flatness medical device stent according to one embodiment of the present invention; Figure 2 A schematic diagram of the back strip setting position according to one embodiment of the present invention; Figure 3 This is a structural schematic diagram showing the location of the reinforcing ribs according to one embodiment of the present invention; Figure 4 for Figure 3 A magnified schematic diagram of the structure of part A in the diagram; Figure 5 A structural schematic diagram showing the location of the mounting holes according to one embodiment of this utility model; Figure 6 for Figure 5 A magnified schematic diagram of the partial structure of B in the diagram; Figure 7 This is a schematic diagram of a retaining ring sleeved on a protruding post according to one embodiment of the present invention; Figure 8 This is a schematic diagram of the cross-sectional structure of a protruding column according to one embodiment of the present invention; Figure 9 This is a schematic diagram of the retaining ring according to one embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of the parallel portion perpendicular to the third plane in one embodiment of the present invention; Figure 11 This is a schematic diagram of the structure of a parallel portion sliding along a first rounded corner in one embodiment of the present invention; Figure 12 This is a schematic diagram of the structure of the parallel part of one embodiment of the present invention being parallel to the third plane.

[0016] Explanation of reference numerals in the attached figures: 1. High-flatness medical device support; 10. Circuit board; 100. Mounting hole; 101. Side block; 20. Body; 21. Protruding column; 210. Locking platform; 211. Positioning groove; 212. Right angle part; 2120. First rounded corner; 213. Side groove; 214. Third plane; 215. Third arc surface; 22. Reinforcing rib; 23. Back strip; 30. Locking ring; 31. Sloping top; 311. Positioning block; 32. Perforation; 320. Parallel part; 321. Arc-shaped part. Detailed Implementation

[0017] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model.

[0018] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 the embodiments of 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.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," 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 communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0021] like Figures 1 to 12As shown, in one embodiment, a high-flatness medical device support 1 is used to support a circuit board 10. It includes a body 20 and a retaining ring 30. The body 20 is integrally formed with a protrusion 21 and a retaining platform 210. The retaining ring 30 is integrally formed with an inclined top 31. The retaining ring 30 is sleeved on the protrusion 21. The retaining ring 30 rotates around the axis of the protrusion 21 so that when the inclined top 31 abuts against the retaining platform 210, the retaining ring 30 and the body 20 together clamp the circuit board 10.

[0022] It should be noted that the main body 20 adopts a one-piece metal structure, which can effectively ensure the overall structural strength and flatness of the main body 20 and avoid flatness deviations caused by splicing and other processes. On one side of the main body 20, several protruding pillars 21 are integrally formed. On the end face of each protruding pillar 21 away from the main body 20, a retaining platform 210 is integrally formed. The diameter of the retaining platform 210 is larger than the diameter of the protruding pillar 21, so that the retaining platform 210 can extend evenly relative to the periphery of the protruding pillar 21, forming a structure similar to a "mushroom head". At the same time, the retaining ring 3 The bracket includes several retaining rings 30, each with an integrally formed sloping top 31 on one side. When mounting the circuit board 10 onto the bracket, the circuit board 10 is first placed on the side of the body 20 where the protrusions 21 are located. The end of each protrusion 21 furthest from the body 20 passes through the corresponding pre-drilled mounting hole 100 on the circuit board 10 and extends out from the other side of the circuit board 10 furthest from the body 20. Then, each retaining ring 30 is fitted onto the protrusion 21 extending from the circuit board 10, ensuring the retaining ring 30 is positioned on the circuit board 10. The position between the retaining ring 30 and the mounting plate 210 allows the retaining ring 30 to rotate freely around the axis of the protrusion 21. As the retaining ring 30 rotates, the angled top 31 on the retaining ring 30 gradually comes into contact with the mounting plate 210 at the end of the protrusion 21. With continued rotation of the retaining ring 30, the distance between the angled top 31 and the mounting plate 210 gradually increases, causing the side of the retaining ring 30 away from the angled top 31 to gradually press tightly against the side of the circuit board 10 away from the body 20. When the very top of the angled top 31 comes into contact with the mounting plate 210, the retaining ring 30 and the body 20... Together, they form a stable clamping state for the circuit board 10. This ensures that the bracket itself has a high degree of flatness, providing a flat mounting base for the circuit board 10, effectively preventing deformation of the circuit board 10 due to uneven mounting surfaces, and ensuring the normal operation of the components on the circuit board 10. At the same time, the retaining ring 30 and the protrusion 21 are clamped together through the rotatable inclined top 31 and the clamping table 210. This not only makes the operation simple and quick, without the need for additional fastening tools, but also improves the stability and flatness of the circuit board 10 after installation, and avoids the risk of electronic components being damaged.

[0023] like Figures 7 to 9 , Figures 11 to 12As shown, in one embodiment, the card holder 210 has a positioning groove 211, and a positioning block 311 is provided on the sloping top 31, which engages with the positioning groove 211.

[0024] It should be noted that a positioning groove 211 is provided in the middle of the side of the card holder 210 facing the main body 20. The positioning groove 211 can be circular, square, or other shapes that are compatible with the positioning block 311, and the edges of the groove are smoothed to facilitate the smooth insertion of the positioning block 311. The sloping top 31, as an integrally formed sloping protrusion, has a positioning block 311 at its top furthest point from the retaining ring 30 (i.e., the end that abuts against the card holder 210). The shape and size of the positioning block 311 are perfectly matched with the positioning groove 211 in the middle of the card holder 210, ensuring that the two can be stably engaged. When the retaining ring 30 is rotated to gradually bring the sloping top 31 against the card holder 210 until the very top of the sloping top 31 is completely in contact with the end face of the card holder 210, the positioning block 311 at the top of the sloping top 31 will be precisely aligned and engaged in the positioning groove 211 in the middle of the card holder 210, forming a tight engagement. At this point, if the retaining ring 30 is to be rotated in the opposite direction to release the circuit board 10, it is necessary to... Applying a greater force to the retaining ring 30 is necessary to overcome the frictional force between the positioning block 311 and the positioning groove 211, allowing the positioning block 311 to disengage from the positioning groove 211. This ensures that after the retaining ring 30 and the body 20 clamp the circuit board 10, they effectively resist various shaking and vibrations generated during equipment operation, preventing the inclined top 31 from rotating relative to the clamping platform 210 and disengaging due to shaking. This maintains a stable clamping force on the circuit board 10, preventing it from loosening or shifting on the bracket, further enhancing the stability and reliability of the bracket's installation of the circuit board 10. Simultaneously, the precise engagement of the positioning block 311 and the positioning groove 211 also serves as a positioning mechanism. When the positioning block 311 engages with the positioning groove 211, it indicates that the retaining ring 30 has rotated to the optimal tightening position, eliminating the need for operators to judge the tightening degree based on experience, reducing the difficulty of installation, and ensuring consistency and standardization in each installation.

[0025] like Figure 7 , Figures 9 to 12 As shown, in one embodiment, the retaining ring 30 has a through hole 32. The inner sidewall of the through hole 32 includes two parallel portions 320 and two arc-shaped portions 321. The two parallel portions 320 are arranged opposite each other, and the two arc-shaped portions 321 are located on both sides of the parallel portions 320. The spacing between the two parallel portions 320 is the same as the diameter of the protrusion 21, and the spacing between the two arc-shaped portions 321 is greater than the diameter of the protrusion 21.

[0026] It should be noted that the inner wall of the perforation 32 is composed of two parallel portions 320 and two arc-shaped portions 321. The two parallel portions 320 are straight and opposite to each other, maintaining a parallel relationship. The two arc-shaped portions 321 are respectively connected to the two ends of the two parallel portions 320, forming a closed hole wall structure with arc-shaped ends and a parallel straight line in the middle. Specifically, the two ends of one arc-shaped portion 321 are respectively connected to the same end of the two parallel portions 320, and the two ends of the other arc-shaped portion 321 are respectively connected to the other end of the two parallel portions 320, making the entire inner wall of the perforation 32 form a similar structure. The outline resembles a racetrack, and the spacing between the two parallel portions 320 is consistent with the diameter of the protrusion 21, while the spacing between the two arc-shaped portions 321 is greater than the diameter of the protrusion 21. Furthermore, the shape of the cross-section of the locking platform 210 is consistent with the shape of the through hole 32, so that the protrusion 21 can drive the locking platform 210 through the through hole 32 and extend from the side of the circuit board 10 away from the body 20. When the retaining ring 30 is fitted onto the protrusion 21 through the through hole 32, the two parallel portions 320 can form line contact with the outer peripheral wall of the protrusion 21, while the arc-shaped portions 321 leave a certain gap with the outer peripheral wall of the protrusion 21. For ease of description, since the shape of the card platform 210 is consistent with the shape of the perforation 32, the two parallel portions 320 of the perforation 32 are defined as the first plane and the second plane, respectively, and the two arc-shaped portions 321 are defined as the first arc surface and the second arc surface, respectively. The four sides of the card platform 210 are defined as the third plane 214, the third arc surface 215, the fourth plane, and the fourth arc surface, respectively. When the first plane and the second plane are parallel to the third plane 214 and the fourth plane, respectively, after the protrusion 21 passes through the perforation 32, there are gaps between the outer peripheral wall of the protrusion 21 and the first arc surface and the second arc surface, respectively.

[0027] It should be noted that, since the spacing between the first and second planes is consistent with the diameter of the protrusion 21, the first and second planes can rotate relative to the outer peripheral wall that clamps the protrusion 21 and along the outer peripheral wall. Furthermore, two inclined tops 31 are provided, with the two inclined tops 31 located on one side of the first and second planes respectively. When the retaining ring 30 drives the first and second planes to rotate and become parallel to the third arc surface 215 and the fourth arc surface respectively, the two inclined tops 31 gradually come into contact with the side walls of the third arc surface 215 and the fourth arc surface, thereby allowing the retaining ring 30 and the body 20 to clamp the circuit board 10 together.

[0028] like Figure 4 , Figures 7 to 8 , Figures 10 to 12 As shown, in one embodiment, the protruding post 21 is provided with a right-angled portion 212, one side of the right-angled portion 212 is close to the card table 210, and any parallel portion 320 is parallel to one side of the right-angled portion 212 so that the parallel portion 320 abuts against the card table 210.

[0029] It should be noted that two opposing right-angled portions 212 are integrally formed on the outer peripheral wall of the protruding post 21. Each right-angled portion 212 is formed by the intersection of two mutually perpendicular planes, causing the protruding post 21 to extend outward from the outer peripheral surface, forming two opposing right-angled edges (the included angle has the same curvature as the arc-shaped portion 321), and its cross-section tends to be rhomboid. Furthermore, the two opposing sides of the two right-angled portions 212 are parallel to the third plane 214 and the fourth plane, respectively, while the other two sides of the two right-angled portions 212 are parallel to the third arc surface 215 and the fourth arc surface of the mounting platform 210, respectively. Furthermore, the two sides of one right-angled portion 212 are parallel to the other right-angled portion 212. The connection points on both sides are rounded. For ease of description, the two rounded corner structures are defined as the first rounded corner 2120 and the second rounded corner, respectively. The diameter of the circle formed by the two rounded corners is consistent with the distance between the first and second planes. This allows the retaining ring 30 to rotate relative to the protrusion 21, enabling the first and second planes to slide tangentially along the surfaces of the first and second rounded corners, respectively. This makes the first and second planes parallel to the two right-angled portions 212 and abut against one side of the third and fourth arc surfaces, respectively, so that the first and second planes are perpendicular to the third and fourth planes, respectively. In this way, the sides of the two parallel portions 320 on the retaining ring 30 can engage with the two retaining platforms 210, causing the sloping tops 31 on the two parallel portions 320 to gradually abut against the sides of the two retaining platforms 210 closest to the body 20, thereby clamping the circuit board 10 together with the retaining ring 30 and the body 20.

[0030] like Figure 1 , Figures 3 to 8 , Figures 10 to 12 As shown, in one embodiment, a side groove 213 is also provided on the protrusion 21, and a side block 101 is provided on the circuit board 10, with the side block 101 slidingly engaging with the side groove 213.

[0031] It should be noted that the two opposite sides of the two right-angled portions 212 are connected to the third plane 214 and the fourth plane respectively, so that the two sides of the protrusion 21 form a plane respectively; and a side groove 213 is opened on each of the two planes, and the side groove 213 extends along the axial direction of the protrusion 21, with its two ends penetrating to the surface of the body 20 and the end face of the mounting plate 210 respectively, forming a complete channel extending from the body 20 to the mounting plate 210, and the end of the side groove 213 near the mounting plate 210 is processed into a rounded corner structure, and the edge of the groove is smoothly transitioned; in conjunction with this, the mounting holes 10 on the circuit board 10 are pre-set. Two side blocks 101 are symmetrically arranged on the inner sidewall of the circuit board 20. The shape and size of the side blocks 101 are perfectly matched with the side grooves 213, and their protrusion height matches the depth of the side grooves 213. When installing the circuit board 10, the mounting holes 100 of the circuit board 10 are aligned with the protrusions 21, so that the two side blocks 101 on the circuit board 10 are respectively aligned with the side grooves 213 on both sides of the protrusions 21. Then, the circuit board 10 is pushed along the axial direction of the protrusions 21, and the side blocks 101 will slide along the side grooves 213 from one side of the body 20 towards the mounting platform 210 until the circuit board 10 is in contact with the surface of the body 20, completing the initial positioning. This reduces the alignment difficulty during installation, and assembly can be completed smoothly even in poor visibility conditions. At the same time, the snap-fit ​​relationship between the side blocks 101 and the side grooves 213 restricts the circumferential rotation of the circuit board 10 relative to the protrusions 21, preventing the circuit board 10 from twisting or shifting during installation or equipment operation. Combined with the clamping action of the retaining ring 30, a multi-dimensional fixing effect is formed, further improving the stability of the circuit board 10 after installation.

[0032] like Figures 1 to 3 As shown, in one embodiment, the main body 20 is also integrally formed with a plurality of intersecting reinforcing ribs 22.

[0033] It should be noted that the main body 20 is also integrally formed with several crisscrossing reinforcing ribs 22. Each reinforcing rib 22 is made of the same metal material as the main body 20 and is connected to the main body 20 in an integral forming manner, without any splicing gaps. Among them, the longitudinal reinforcing ribs 22 are arranged at intervals along the length direction of the main body 20, and the transverse reinforcing ribs 22 are arranged at intervals along the width direction of the main body 20. The two are perpendicular to each other, forming a grid-like structure. The cross-section of the reinforcing ribs 22 is an isosceles trapezoid, and its top width is slightly narrower than its bottom width, which can ensure structural strength and reduce material usage. The crisscrossing reinforcing ribs 22 and the main body 20 form a stable overall structure. Through the integral forming process, the load-bearing capacity and deformation resistance of the main body 20 are further enhanced, effectively preventing the main body 20 from bending or warping when used for a long time or bearing the weight of the circuit board 10, thereby continuously ensuring the high flatness of the main body 20 and providing a flat mounting base for the circuit board 10.

[0034] like Figures 2 to 3As shown, in one embodiment, the main body 20 is also integrally formed with a plurality of back strips 23, and the back strips 23 are parallel to each other and arranged continuously.

[0035] It should be noted that the main body 20 is also provided with several back strips 23, each of which is integrally formed with the main body 20 as a metal structure. Each back strip 23 is located on the side of the main body 20 away from the mounting circuit board 10, and all back strips 23 are parallel to each other, arranged continuously along the length of the main body 20, forming a regular strip array. In cross-section, each back strip 23 is a triangular structure, with the base of the triangle completely attached to and fixedly connected to the surface of the main body 20, and the two waist sides protruding outward to form sharp apexes. Because the back strips 23 are parallel to each other and arranged continuously, the multiple triangular back strips 23 form a continuous angled overall shape on the back side of the main body 20, and the overall outline tends to be a regular wave shape. The structure, through its triangular cross-section and continuous wave-shaped arrangement, greatly increases the surface area of ​​the back side of the main body 20. The metal back strip 23 itself has good thermal conductivity, which can quickly dissipate the heat conducted through the main body 20 to the air when the circuit board 10 is working, significantly improving the heat dissipation efficiency of the bracket and effectively preventing the performance degradation or damage of components caused by long-term high-temperature operation of the circuit board 10. At the same time, the triangular cross-section of the back strip 23 can also enhance the structural strength of the main body 20. Especially when the main body 20 is under stress, the back strip 23 can play a supporting role similar to a "rib", further reducing the risk of bending and deformation of the main body 20. It complements the reinforcing ribs 22 on the main body 20 and together ensures the high flatness of the main body 20.

[0036] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A high-flatness medical device support for supporting a circuit board, characterized in that, include: The main body is integrally formed with a protruding post, and a locking platform is provided on the protruding post; and The retaining ring has an integrally formed sloping top and is sleeved on the protrusion. The retaining ring rotates around the axis of the protrusion so that when the sloping top abuts against the retaining platform, the retaining ring and the body together clamp the circuit board.

2. The high-flatness medical device stent according to claim 1, characterized in that, The card slot is provided with a positioning groove, and a positioning block is provided on the sloping top, and the positioning block is engaged with the positioning groove.

3. The high-flatness medical device stent according to claim 2, characterized in that, The retaining ring has a through hole. The inner wall of the through hole includes two parallel portions and two arc-shaped portions. The two parallel portions are arranged opposite each other, and the two arc-shaped portions are located on both sides of the parallel portions. The distance between the two parallel portions is the same as the diameter of the protrusion, and the distance between the two arc-shaped portions is greater than the diameter of the protrusion.

4. The high-flatness medical device stent according to claim 3, characterized in that, The shape of the card holder is consistent with the shape of the perforation.

5. The high-flatness medical device stent according to claim 3, characterized in that, The protruding post is provided with a right-angled portion, one side of which is close to the card table. Any one of the parallel portions is parallel to one side of the right-angled portion, so that the parallel portion abuts against the card table.

6. The high-flatness medical device stent according to claim 5, characterized in that, The protruding post is also provided with a side groove, and the circuit board is provided with a side block, which is slidably engaged with the side groove.

7. The high-flatness medical device stent according to claim 1, characterized in that, The main body is also integrally formed with several intersecting reinforcing ribs.

8. The high-flatness medical device stent according to claim 7, characterized in that, The main body is also integrally formed with a plurality of back strips, which are parallel to each other and arranged continuously.

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