Magnesium alloy anti-displacement support structure

Abstract

The utility model discloses a magnesium alloy prevents displacement support structure, including the telescopic unit of the radial telescopic of support opening and the support connecting rod between connecting in telescopic unit, telescopic unit possesses several mutually far away telescopic point when radial telescopic, interval selects part telescopic point as support function component mounting point, and the connecting position of support connecting rod and telescopic unit is on the telescopic point of support function component mounting point adjacent connection, the utility model discloses a function component is set up in telescopic unit, and function component includes support support arm etc, and the deformation of the region where function component is located and other areas of telescopic unit is controlled by the support connecting rod on the both sides of function component, thereby making the region where function component is located can with the process of support opening automatically to the outer surface of support contour convex, realizes the function such as the anti -displacement support or development of support.

Description

Technical Field

[0001] This utility model relates to the field of support technology, specifically to a magnesium alloy anti-displacement support structure. Background Technology

[0002] Biliary stents play an important role in treatment scenarios such as clogging and obstruction. For example, patients who develop biliary complications after liver transplantation often require one or more biliary stent placements via the duodenal papilla to relieve obstruction. Urethral stricture or obstruction is a common urinary system disease in clinical practice, and stent placement is an effective treatment method.

[0003] Currently, stents placed in clinical settings are either plastic or metallic. Plastic stents have poor biocompatibility and are prone to displacement and blockage, while metallic stents can easily cause intimal inflammation and hyperplasia, leading to restenosis and requiring multiple placements. Magnesium alloy, as a novel biomedical material, has good biodegradability and biocompatibility. Existing methods for preventing stent displacement often involve using shape memory alloys to create barbs or hooks on the stent. However, the state of these barbs is fixed and cannot be changed according to the specific placement channel, thus affecting the stent's positioning and displacement prevention effect. Utility Model Content

[0004] Technical objective: To address the shortcomings of existing supports, this utility model discloses a magnesium alloy anti-displacement support structure that can automatically extend and fix the support as it opens.

[0005] Technical solution: To achieve the above technical objectives, the present invention adopts the following technical solution:

[0006] A magnesium alloy anti-displacement support structure includes telescopic units that expand and contract radially along the support when it is opened, and support rods connecting the telescopic units. Each telescopic unit has several telescopic points that are far apart from each other during radial expansion and contraction. Some telescopic points are selected at intervals as mounting points for functional components of the support. The support rods are connected to the telescopic units at telescopic points adjacent to the mounting points of the functional components. When the support is opened, the support rods limit the displacement distance of the telescopic points located on both sides of the mounting points of the functional components. The structural deformation of the support at the mounting points of the functional components is greater than the deformation of the support at the other telescopic points. Under the tensile force of the deformation, the mounting points of the functional components move outward from the support, causing the corresponding functional components to protrude from the surface of the support contour.

[0007] Preferably, the functional components of this utility model include a stent support arm, a stent imaging point, or a stent drug release point.

[0008] Preferably, the telescopic unit of this utility model adopts a wave-shaped structure, with the peak of the waveform on one side where the functional component is located as the peak and the other side as the trough. The peak or trough position of the wave-shaped structure is used as the telescopic point to connect the functional component or the support rod.

[0009] Preferably, in this invention, the functional components on the bracket are installed in the same direction or opposite directions along the length of the bracket.

[0010] Preferably, in this invention, along the length of the support, the crests of the telescopic unit are staggered or correspond to each other in the circumferential direction.

[0011] Preferably, in this invention, when the crests of the telescopic unit are staggered in the circumferential direction, along the installation orientation of the functional component, the ends of the support connecting rods on both sides of the installation point of the same bracket functional component are connected to the troughs corresponding to the circumferential positions of the previous telescopic unit and the installation points of the bracket functional components.

[0012] Preferably, in this invention, when the crests of the telescopic unit correspond to each other in the circumferential direction, along the installation orientation of the functional component, the ends of the support rods on both sides of the installation point of the functional component of the same bracket are respectively connected to the two troughs of the previous telescopic unit adjacent to the functional component.

[0013] Preferably, the support link of this utility model adopts an arc-shaped structure.

[0014] Preferably, the surface of the scaffold of this invention is subjected to micro-arc oxidation treatment to form a bioactive oxide film on the surface of the scaffold.

[0015] Beneficial effects: The magnesium alloy anti-displacement bracket structure disclosed in this utility model has the following beneficial effects:

[0016] 1. This utility model sets up functional components in the telescopic unit, including support arms, etc. The support rods on both sides of the functional components control the deformation of the area where the functional components are located and other areas of the telescopic unit, so that the area where the functional components are located can automatically bulge outward from the outer surface of the support contour as the support opens, thereby realizing the functions of anti-displacement support or development of the support.

[0017] 2. The telescopic unit of this utility model adopts a wave-shaped structure, which better conforms to the physiological curvature of the bile duct, urethra and other usage scenarios, and reduces damage to the internal mucosa; at the same time, it can ensure that the deformation of each telescopic point is uniform in the natural telescopic state. Therefore, when the telescopic points on both sides of the mounting point of the functional component of the bracket are limited by the support rod, it can ensure that the deformation of the functional component is greater than that of other areas of the bracket, so as to make the functional component protrude from the surface of the bracket by utilizing the tensile force generated by the bracket.

[0018] 3. The functional components on the bracket of this utility model can be selected according to the requirements and set with corresponding installation positions. When the bracket support arm is installed facing away as a functional component, it can limit the bracket in both directions. The bracket support arm can also be added or removed according to the main displacement direction during the use of the bracket, or the bracket support arm can be set to the same direction.

[0019] 4. The surface of the stent of this utility model is subjected to micro-arc oxidation treatment to form a bioactive oxide film, which can improve the corrosion resistance of the stent, making it suitable for corrosive environments such as the urethra. It can also promote the adhesion and growth of urethral mucosal cells, further improving the biocompatibility of the stent.

[0020] 5. The support of this utility model is made of magnesium alloy, and the degradation products are magnesium ions that are harmless to the human body. These magnesium ions can inhibit the growth of bacteria to a certain extent and have a certain antibacterial effect. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0022] Figure 1 This is a schematic diagram of the overall structure of the bracket of this utility model;

[0023] Figure 2 This is a side view of the bracket in Embodiment 1 of this utility model;

[0024] Figure 3 This is a side view of the bracket in Embodiment 2 of this utility model;

[0025] Among them, 1-telescopic unit, 2-support link, 3-support arm, and 4-support developing point. Detailed Implementation

[0026] Reference will now be made in detail to embodiments of the present disclosure, one or more of which are set forth herein. Each embodiment and example is provided by way of explanation of the apparatus, composition, and materials of the present disclosure, and not by way of limitation. Rather, the following description provides convenient illustrations for implementing exemplary embodiments of the present disclosure. Indeed, it will be apparent to those skilled in the art that various modifications and variations can be made to the teachings of the present disclosure without departing from the scope or spirit of the present disclosure.

[0027] like Figure 1As shown, this utility model discloses a magnesium alloy anti-displacement bracket structure, including a telescopic unit 1 that expands and contracts radially along the bracket when the bracket is opened, and a support rod 2 connected between the telescopic units 1. The telescopic unit 1 has several telescopic points that are far apart from each other when expanding and contracting radially. Some telescopic points are selected at intervals as mounting points for bracket functional components. The connection position of the support rod 2 and the telescopic unit 1 is located at the telescopic points adjacent to the mounting points of the bracket functional components. When the bracket is opened, the support rod 2 restricts the displacement distance of the telescopic points located on both sides of the mounting points of the bracket functional components. The deformation of the bracket structure at the mounting points of the bracket functional components is greater than the deformation of the bracket at other telescopic points. Under the tensile force of the bracket deformation, the mounting points of the bracket functional components move outward of the bracket, causing the corresponding functional components to protrude from the bracket contour surface.

[0028] The main functional component of this invention is the stent support arm 3. Alternatively, a stent imaging point 4 or a stent drug release point can be added according to the functional requirements of the stent. Other components can also be attached to the stent based on its application scenario. During stent opening, the deformation of the stent functional component installation point differs from that of other expansion points, causing the stent functional component to protrude from the stent's contour surface and contact the wall of the corresponding implantation location. This achieves functions such as anti-displacement support, imaging, or drug release for the stent. Although this invention uses the stent for channel support in the biliary or urinary system, other types of stents based on the stent opening principle of this invention are not excluded from the protection scope of this invention due to changes in their application scenarios. For situations where the stent is prone to corrosion and accelerated degradation, micro-arc oxidation treatment can be applied to the stent surface to form a bioactive oxide film, improving the stent's corrosion resistance and promoting the adhesion and growth of mucosal cells.

[0029] like Figure 2 and Figure 3 As shown, this utility model provides two examples of brackets formed by telescopic units. In both embodiments, a wave-shaped structure is used as the telescopic unit. The peak of the wave on one side where the functional component is located is used as the peak, and the other side is used as the trough. The peak or trough of the wave-shaped structure is used as the telescopic point to connect the functional component or the support rod 2. This ensures that the deformation characteristics of each telescopic point are similar when there is no restriction on the connection of the support rod 2. Example

[0030] exist Figure 2In the embodiment shown, the functional components on the bracket are installed facing away from each other along the length of the bracket. The purpose of the bracket support arm 3 being set facing away from each other is to enable the bracket to provide anti-displacement force in both the left and right directions of the illustrated position. This structural form is suitable for situations where the force direction of the bracket is not unique, and the number of components can be increased as needed. In order to ensure that the overall force of the bracket is balanced, for brackets with functional components installed facing away from each other, the bracket can be set as a structure symmetrical about the central axis. Example

[0031] exist Figure 3 In the illustrated embodiment, the functional components on the support are installed in the same direction along the length of the support, thereby improving the support's load-bearing capacity in one direction.

[0032] Meanwhile, for the support structures of Embodiment 1 and Embodiment 2, the connection positions of the corresponding support rods 2 need to be changed accordingly depending on the arrangement of the telescopic units.

[0033] Along the length of the support, the crests of the telescopic unit 1 are staggered or correspond to each other in the circumferential direction, such as... Figure 2 As shown, when the crests of the telescopic unit 1 are staggered in the circumferential direction, along the installation orientation of the functional component, the ends of the support rods 2 on both sides of the installation point of the same bracket functional component are connected to the troughs corresponding to the circumferential positions of the previous telescopic unit and the installation points of the bracket functional components.

[0034] like Figure 3 As shown, when the crests of the telescopic unit 1 correspond to each other in the circumferential direction, along the installation orientation of the functional component, the ends of the support rods 2 on both sides of the installation point of the functional component of the same bracket are respectively connected to the two troughs of the previous telescopic unit adjacent to the functional component. In this connection state, in addition to limiting the displacement of the telescopic point during the opening of the bracket, the two support rods located at the trough of the waveform where the functional component is installed can also generate tension as the bracket opens, further increasing the deformation of the waveform where the functional component is located.

[0035] The use of this utility model stent, taking urethral stent implantation as an example, is explained as follows: Initially, the stent is in a retracted state, and medical staff can easily insert it into the urethra using instruments such as a urethroscope. Then, a balloon is used to support and deploy the stent. After the balloon drives the stent to deploy, under the action of the support link 2, the stent support arm 3 and the stent imaging point 4 are deployed outwards by the telescopic unit, slightly fitting with the urethral mucosa. The stent implantation position is controlled by the stent imaging point 4. Preferably, the stent imaging point 4 is set at both ends of the stent to display the overall position of the stent. To ensure the anti-displacement effect, a protrusion or barb can be set at the end of the stent support arm 3 to prevent the stent from shifting during urine flushing or human activity, thereby ensuring the stability of the implanted stent position and achieving a good therapeutic effect on the lesion site.

Claims

1. A magnesium alloy anti-displacement support structure, characterized in that, The system includes a telescopic unit (1) that expands and contracts radially along the support when the support is opened, and a support link (2) connecting the telescopic units (1). The telescopic unit (1) has several telescopic points that are far apart from each other when expanding and contracting radially. Some telescopic points are selected at intervals as mounting points for the functional components of the support. The connection position of the support link (2) and the telescopic unit (1) is located at the telescopic points adjacent to the mounting points for the functional components of the support. When the support is opened, the displacement distance of the telescopic points connected to each other on both sides of the mounting points for the functional components of the support is limited by the support link (2). The structural deformation of the support at the mounting point for the functional components of the support is greater than the deformation of the support at the other telescopic points. Under the tensile force of the deformation of the support, the mounting point for the functional components of the support moves outward of the support, so that the corresponding functional component protrudes from the surface of the support contour.

2. The magnesium alloy anti-displacement support structure according to claim 1, characterized in that, The functional components include a stent support arm (3), a stent imaging point (4), or a stent drug release point.

3. A magnesium alloy anti-displacement support structure according to claim 1 or 2, characterized in that, The telescopic unit (1) adopts a wave-shaped structure, with the peak of the waveform on one side of the functional component as the peak and the other side as the trough. The peak or trough of the wave-shaped structure is used as the telescopic point to connect the functional component or the support rod (2).

4. The magnesium alloy anti-displacement support structure according to claim 3, characterized in that, Along the length of the bracket, the functional components on the bracket are installed in the same direction or opposite directions.

5. A magnesium alloy anti-displacement support structure according to claim 3, characterized in that, Along the length of the support, the crests of the telescopic unit (1) are staggered or correspond to each other in the circumferential direction.

6. A magnesium alloy anti-displacement support structure according to claim 5, characterized in that, When the crests of the telescopic unit (1) are staggered in the circumferential direction, along the installation orientation of the functional component, the ends of the support rods (2) on both sides of the same bracket functional component installation point are connected to the troughs corresponding to the circumferential positions of the previous telescopic unit and the bracket functional component installation points.

7. The magnesium alloy anti-displacement support structure according to claim 5, characterized in that, When the crests of the telescopic unit (1) correspond to each other in the circumferential direction, along the installation orientation of the functional component, the ends of the support rods (2) on both sides of the installation point of the functional component of the same bracket are respectively connected to the two troughs of the previous telescopic unit adjacent to the functional component.

8. A magnesium alloy anti-displacement support structure according to any one of claims 4-5, characterized in that, The supporting link (2) adopts an arc-shaped structure.

9. The magnesium alloy anti-displacement support structure according to claim 1, characterized in that, The surface of the scaffold is subjected to micro-arc oxidation treatment to form a bioactive oxide film on the scaffold surface.

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