Sector structure support used in stomach and preparation method thereof

Abstract

The invention discloses a sector structure support used in the stomach and a preparation method of the sector structure support. The sector structure support comprises an outer supporting frame and an inner supporting frame. The outer supporting frame and the inner supporting frame are combined and connected together to improve the overall structural strength of the structural support, so that when the structural support is placed in the stomach of a patient, part of the space of the stomach can be supported, and a partition is formed by combining the structure in the stomach; the stomach space of the part can be fully supported without being filled with food, so that the food intake of a patient can be reduced, a better weight losing effect is achieved, liquid such as gastric juice can conveniently flow downwards through the hollow inner cavity formed in the inner supporting frame, a hole is equivalently reserved in the bottom of the stomach, the gastric juice can be conveniently discharged out of the duodenum, and the weight losing effect is good. The stomach of the patient can be gradually contracted to the normal size along with the reduction of the food intake of the patient every time, so that the weight losing treatment can be fundamentally carried out on the patient.

Description

Technical Field

[0001] The present invention relates to a stent, in particular to a sector-structured stent used in the stomach and a preparation method thereof, belonging to the technical field of medical devices. Background Art

[0002] Obesity is a common metabolic syndrome. As a risk factor for many chronic diseases such as hypertension, diabetes, cardiovascular and cerebrovascular accidents and malignant tumors, obesity has been listed as one of the top ten risk factors leading to disease burden. Weight loss is very popular now. The commonly used surgical method is to perform weight loss surgery, remove 2 / 3 of the stomach, and make a sleeve gastrectomy. However, the operation is irreversible and risky. When using minimally invasive weight loss surgery, the patient first needs to swallow an uninflated balloon into the stomach, and then inject a labeled liquid into the balloon to inflate the balloon. This method can easily cause gastroptosis. Another treatment method is to insert an 80-150cm fully covered stent in the patient's duodenum to prevent food from contacting the duodenum, forming a barrier and affecting nutrient absorption. However, the capacity of the stomach is still normal. Once the stent is removed, it is easy to rebound.

[0003] In the prior art, there is an intragastric stent weight loss device disclosed in announcement number CN113057777A. After the gastric stent structure and the elastic filling ring are implanted through the intragastric stent weight loss device, the gastric stent structure can realize the positioning of the elastic filling ring in the patient's stomach to prevent the elastic filling ring from blocking food after displacement. At the same time, the elastic filling ring provides the patient with a sense of fullness, thereby reducing the patient's food intake to achieve the purpose of weight loss, and is safer. However, the gastric stent provided by the prior art needs to be combined with a special conveying mechanism to achieve the placement of the stent, that is, more supporting components are required, which greatly increases the production cost and medical cost. Secondly, the gastric stent provided by the prior art is achieved by placing the gastric stent structure and the elastic filling ring in the patient's stomach to form support for the stomach, but the elastic filling ring cannot be accurately placed at the bottom of the patient's stomach, that is, although it can form support in the patient's stomach to provide the patient with a sense of fullness, if there is a certain space at the bottom of the patient's stomach, and the food is blocked by the elastic filling ring, the bottom space cannot be filled, so it will still cause some discomfort to the patient. Therefore, in actual use, it cannot achieve a good use effect, and after use, it is not convenient to remove the stent. Summary of the invention

[0004] The purpose of the present invention is to provide a fan-shaped structure stent for use in the stomach and a preparation method thereof in order to solve at least one of the above technical problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions: a fan-shaped structure stent for use in the stomach, comprising an outer support frame and an inner support frame, wherein the outer support frame is sleeved and connected to the outer side of the inner support frame, and the inner side of the inner support frame is hollow;

[0006] The outer support frame includes a fan-shaped support net, which is composed of a plurality of annular bent metal wires, and the annular bent metal wires are arranged in upper and lower layers;

[0007] The inner support frame comprises a columnar support net and a metal ring. The metal rings are respectively connected to two ends of the columnar support net. The columnar support net is woven by a plurality of longitudinally bent metal wires.

[0008] As a further solution of the present invention: the outer support frame also includes a plurality of upper support metal wires and a plurality of lower support metal wires, one end of the upper support metal wire is connected to the upper end of the fan support net, and the other end of the upper support metal wire is connected to the metal ring body at the upper end of the inner support frame, one end of the lower support metal wire is connected to the lower end of the fan support net, the upper support metal wire and the lower support metal wire are both arc-shaped metal wires, and the other end of the lower support metal wire is connected to the metal ring body at the lower end of the inner support frame.

[0009] As a further solution of the present invention: the outer support frame also includes a plurality of inner support wires, the inner support wires are connected between the fan support mesh and the columnar support mesh, and the connection positions between two adjacent inner support wires and the fan support mesh are distributed in a triangular shape.

[0010] As a further solution of the present invention: the annular bent metal wire includes a bending portion and a bending node, and the bending node is located at the butt joint of two adjacent bending portions.

[0011] As a further solution of the present invention: the bending node includes a butt-jointed wire segment node and a first winding node, the butt-jointed wire segment node is located at the lower end butt-jointed node of two adjacent bending portions of the annular bent metal wire, the first winding node is located at the upper end butt-jointed node of two adjacent bending portions of the annular bent metal wire, and the first winding node arranged in a corresponding manner is wound around the butt-jointed wire segment node.

[0012] As a further solution of the present invention: the longitudinal bent metal wire is provided with a plurality of bending points, and two adjacent longitudinal bent metal wires are aligned and clamped together through the bending points.

[0013] As a further solution of the present invention: second winding nodes are provided at the upper and lower ends of the longitudinal bent metal wire, and the second winding nodes are wound around the ring body of the metal ring to form a firm connection between the longitudinal bent metal wire and the metal ring, thereby ensuring that the longitudinal bent metal wire can be deformed when the metal ring is pulled, that is, the tensile deformation of the inner support frame can be achieved.

[0014] As a further solution of the present invention: the material of the outer support frame and the inner support frame constituting the structural support includes but is not limited to memory nickel alloy material.

[0015] As a further solution of the present invention: "◇"-shaped diamond holes are formed between the upper and lower annular bent metal wires and between two adjacent longitudinal bent metal wires.

[0016] A method for preparing a fan-shaped structure stent for use in the stomach, comprising any fan-shaped structure stent, the method comprising the following steps:

[0017] A metal wire made of memory nickel alloy material is bent to form a layer of annular bent metal wire, and the metal wire is bent continuously to prepare another layer of annular bent metal wire, and a butt joint wire segment is set at the upper butt joint node of two adjacent bends of the annular bent metal wire, and a first winding node is set at the lower butt joint node of two adjacent bends of the annular bent metal wire, and the first winding node arranged in position is wound around the butt joint wire segment, so that the upper and lower annular bent metal wires are butt jointed by the characteristic butt joint method of the bending node, so as to realize the preparation of the fan support net;

[0018] The metal wire made of memory nickel alloy material is bent to form a longitudinal bent metal wire, and the metal wire is further bent to prepare another longitudinal bent metal wire. The two adjacent longitudinal bent metal wires are clamped at the bending points to form a stable connection, and the second winding nodes arranged at the upper and lower ends of the longitudinal bent metal wire are wound around the ring body of the metal ring to realize the preparation of the inner support frame;

[0019] The upper and lower ends of the fan support net are respectively connected to the upper and lower support wires, the inner support wire is connected to the inner side of the fan support net, and the other ends of the upper and lower support wires are respectively connected to the upper and lower metal rings of the inner support frame, and the other end of the inner support wire is connected to the longitudinally bent wire to form the overall preparation of the structural support;

[0020] By stretching the inner support frame, the longitudinal bent metal wire is elongated and straightened, and the connecting part can also move accordingly, thereby driving the fan-shaped support net to deform. That is, the outer support frame can also be stretched and deformed by cooperating with the upper support metal wire and the lower support metal wire. The angle between the two adjacent inner support metal wires changes when the inner support frame of the structural support is stretched, thereby ensuring that the fan-shaped support net can shrink when it is stretched and deformed, and thus the structural support can be more conveniently placed in the patient's stomach.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention is provided with an outer support frame and an inner support frame, and the outer support frame and the inner support frame can be combined and connected together to improve the overall structural strength of the structural support. Then, when the structural support is placed in the patient's stomach, part of the stomach space can be propped up and combined with the stomach structure to form a partition, that is, the stomach space of this part can be filled without filling food, so the patient's food intake can be reduced, achieving a better weight loss effect, and the hollow inner cavity of the inner support frame is provided to facilitate the downward flow of liquids such as gastric juice, which is equivalent to leaving a hole in the stomach fundus to facilitate the discharge of gastric juice from the duodenum, ensuring that the stomach actually has a sense of fullness, and as the patient's food intake decreases each time, the patient's stomach will gradually shrink back to its normal size, which can achieve a fundamental weight loss treatment for the patient;

[0023] 2. The external support frame provided in the present invention includes a fan-shaped support net, which is composed of a plurality of annular bent metal wires. The fan-shaped support net is provided to make the structural support have a fan-shaped appearance, so that it can better fit the shape of the patient's stomach fundus, that is, the structural support can be placed just on the inner wall of the stomach fundus, and the fan-shaped support net composed of a plurality of annular bent metal wires can have a certain shrinkage property, which can reduce the volume of the fan-shaped support net, so that the structural support can produce corresponding deformation when the patient's stomach contracts;

[0024] 3. The inner support frame provided in the present invention includes a columnar support mesh and a metal ring. The columnar support mesh is woven by a plurality of longitudinally bent metal wires. The metal ring can ensure that the inner side of the inner support frame is in a hollow state, thereby ensuring that the gastric juice can flow downward to be discharged from the duodenum. At the same time, the longitudinally bent metal wires provided can have certain deformation properties, and the outer support frame can be deformed by stretching the columnar support mesh, so as to facilitate the placement of the structural support in the patient's stomach. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0027] Figure 3 It is a schematic diagram of a partial cross-sectional structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of the annular bent metal wire of the present invention;

[0029] Figure 5 It is a schematic diagram of the bending node structure of the present invention;

[0030] Figure 6 This is a schematic diagram of the inner support frame structure of the present invention;

[0031] Figure 7 It is a schematic diagram of the partial structure of the columnar support net of the present invention;

[0032] Figure 8 It is a schematic diagram of the bending point docking structure of the longitudinally bent metal wire of the present invention;

[0033] Fig. 9 It is a schematic diagram of the connection structure of the longitudinally bent metal wire and the metal ring of the present invention.

[0034] In the figure: 1, outer support frame, 11, fan-shaped support net, 12, upper support wire, 13, lower support wire, 14, inner support wire, 15, ring-shaped bent wire, 151, bending portion, 152, bending node, 1521, docking segment node, 1522, first winding node, 2, inner support frame, 21, columnar support net, 211, longitudinally bent wire, 212, bending point, 213, second winding node, 22, metal ring. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Embodiment 1

[0037] like Figures 1 to 9 As shown, a fan-shaped structural support for the stomach comprises an outer support frame 1 and an inner support frame 2, wherein the outer support frame 1 is sleeved and connected to the outer side of the inner support frame 2, and the inner side of the inner support frame 2 is hollow. The outer support frame 1 and the inner support frame 2 can be combined and connected together to improve the overall structural strength of the structural support. When the structural support is placed in the patient's stomach, part of the stomach space can be propped up and a partition can be made in combination with the stomach structure, that is, the stomach space of this part can be filled up without filling food, thereby reducing the patient's food intake and achieving a better weight loss effect. In addition, the hollow inner cavity of the inner support frame 2 is provided to facilitate the downward flow of liquids such as gastric juice, which is equivalent to leaving a hole in the bottom of the stomach to facilitate the discharge of gastric juice from the duodenum, thereby ensuring that the stomach actually has a sense of fullness, and as the patient's food intake decreases each time, the patient's stomach will gradually shrink back to its normal size, thereby achieving a fundamental weight loss treatment for the patient.

[0038] The outer support frame 1 includes a fan-shaped support net 11, which is composed of a plurality of annular bent metal wires 15, and the annular bent metal wires 15 are arranged in layers up and down. The fan-shaped support net 11 is arranged so that the structural support has a fan-shaped appearance, which can better fit the shape of the patient's stomach fundus, that is, the structural support can be placed just on the inner wall of the stomach fundus, and the fan-shaped support net 11 composed of a plurality of annular bent metal wires 15 can have a certain shrinkage property, which can reduce the volume of the fan-shaped support net 11, so that the structural support can produce corresponding deformation when the patient's stomach contracts;

[0039] The inner support frame 2 includes a columnar support net 21 and a metal ring 22. The metal ring 22 is respectively connected to the two ends of the columnar support net 21. The columnar support net 21 is woven by a plurality of longitudinal bent metal wires 211. The metal ring 22 is arranged to ensure that the inner side of the inner support frame 2 is in a hollow state, thereby ensuring that the gastric juice can flow downward to be discharged from the duodenum. At the same time, the longitudinal bent metal wire 211 can have a certain deformation performance, and the outer support frame 1 can be deformed by stretching the columnar support net 21, so as to facilitate the placement of the structural support in the patient's stomach.

[0040] Embodiment 2

[0041] In addition to all the technical features of the first embodiment, this embodiment also includes:

[0042] The outer support frame 1 also includes a plurality of upper supporting wires 12 and a plurality of lower supporting wires 13, one end of the upper supporting wire 12 is connected to the upper end of the fan-shaped supporting net 11, and the other end of the upper supporting wire 12 is connected to the metal ring 22 on the upper end of the inner support frame 2, and one end of the lower supporting wire 13 is connected to the lower end of the fan-shaped supporting net 11, the upper supporting wire 12 and the lower supporting wire 13 are both arc-shaped wires, and the other end of the lower supporting wire 13 is connected to the metal ring 22 on the lower end of the inner support frame 2, so that the outer support frame 1 can be connected to the inner support frame 2 through the supporting wires arranged at the upper and lower ends, and sufficient gap space can be left between the outer support frame 1 and the inner support frame 2 to form a firm three-dimensional structure to ensure that a filling partition is formed in the patient's stomach, and the use of arc-shaped supporting wires can ensure that no sharp convex corners are formed at the connection to avoid pain to the patient due to squeezing in the patient's stomach.

[0043] The outer support frame 1 also includes a plurality of inner support wires 14, which are connected between the fan-shaped support mesh 11 and the columnar support mesh 21. The connection positions between two adjacent inner support wires 14 and the fan-shaped support mesh 11 are distributed in a triangular shape. The overall structural strength of the structural support can be further improved by connecting a plurality of inner support wires 14, and the connection distribution of two adjacent inner support wires 14 can change the angle when the inner support frame 2 of the structural support is stretched, thereby ensuring that the outer support frame 1 can also be stretched and deformed accordingly.

[0044] The annular bent metal wire 15 includes a bending portion 151 and a bending node 152. The bending node 152 is located at the docking node of two adjacent bending portions 151, so that the upper and lower annular bent metal wires 15 can be connected and docked through the bending node 152 when docking, and the mesh body structure of the fan-shaped support net 11 is formed through the bending portion 151.

[0045] The bending node 152 includes a docking wire segment node 1521 and a first winding node 1522. The docking wire segment node 1521 is located at the lower end docking node of two adjacent bending portions 151 of the annular bending metal wire 15, and the first winding node 1522 is located at the upper end docking node of two adjacent bending portions 151 of the annular bending metal wire 15. The first winding node 1522 is wound around the docking wire segment node 1521, so that the upper and lower annular bending metal wires 15 can be docked through the characteristic docking method of the bending node 152, thereby ensuring the firmness of the docking point. At the same time, since only one of the annular bending metal wires 15 needs to be twisted to form the first winding node 1522, the docking can be achieved, which makes it more convenient when preparing the external support frame 1.

[0046] Embodiment 3

[0047] In addition to all the technical features of the first embodiment, this embodiment also includes:

[0048] The longitudinal bent metal wire 211 is provided with a plurality of bending points 212, and two adjacent longitudinal bent metal wires 211 are aligned and clamped together through the bending points 212. When the inner support frame 2 is in an unstretched state, the two adjacent longitudinal bent metal wires 211 can form a stable connection through the alignment of the bending points 212, and cooperate with the upper and lower metal rings 22 to ensure the structural stability of the inner support frame 2. When the inner support frame 2 is in a stretched state, since the alignment of the bending points 212 is a movable connection, the connection part can move along with the longitudinal bent metal wire 211 when it is stretched and straightened, so that the inner support frame 2 can be better stretched.

[0049] The upper and lower ends of the longitudinal bent metal wire 211 are provided with a second winding node 213, and the second winding node 213 is wound around the ring body of the metal ring 22 so that the longitudinal bent metal wire 211 and the metal ring 22 form a firm connection, thereby ensuring that when the metal ring 22 is pulled, the longitudinal bent metal wire 211 can be driven to deform, that is, the tensile deformation of the inner support frame 2 can be achieved.

[0050] The materials of the outer support frame 1 and the inner support frame 2 constituting the structural support include but are not limited to memory nickel alloy material. The nickel alloy has the strongest supporting force at 37°, that is, the structural support can have the strongest supporting force at normal body temperature of the human body, thereby ensuring that the structural support has a better supporting effect.

[0051] "◇"-shaped diamond holes are formed between the upper and lower annular bent metal wires 15 and between the two adjacent longitudinal bent metal wires 211. When weaving, the metal wires only need to be bent, and there is no need to perform more deformation structures on the metal wires, and there is no need to set up structures such as annular fixing rings, which is convenient for processing and preparation.

[0052] Embodiment 4

[0053] A method for preparing a fan-shaped structure stent for use in the stomach, comprising any fan-shaped structure stent, the method comprising the following steps:

[0054] A metal wire made of memory nickel alloy material is bent to form a layer of annular bent metal wire 15, and the metal wire is bent continuously to prepare another layer of annular bent metal wire 15, and a docking wire segment 1521 is set at the upper end docking node of two adjacent bending parts 151 of the annular bent metal wire 15, and a first winding node 1522 is set at the lower end docking node of two adjacent bending parts 151 of the annular bent metal wire 15, and the first winding node 1522 arranged in position is wound around the docking wire segment 1521, so that the upper and lower annular bent metal wires 15 are docked in a characteristic docking manner of the bending node 152, so as to realize the preparation of the fan-shaped support net 11;

[0055] The metal wire made of memory nickel alloy material is bent to form a longitudinal bent metal wire 211, and the metal wire is further bent to prepare another longitudinal bent metal wire 211. The two adjacent longitudinal bent metal wires 211 are fixedly placed at the bending points 212 to form a stable connection, and the second winding nodes 213 set at the upper and lower ends of the longitudinal bent metal wire 211 are wound around the ring body of the metal ring 22 to achieve the preparation of the inner support frame 2;

[0056] The upper and lower ends of the fan-shaped support net 11 are respectively connected to the upper and lower ends of the support wire 12 and the lower support wire 13, and the inner support wire 14 is connected to the inner side of the fan-shaped support net 11. The other ends of the upper and lower support wires 12 and 13 are respectively connected to the upper and lower metal rings 22 of the inner support frame 2, and the other end of the inner support wire 14 is connected to the longitudinal bent wire 211 to form the overall preparation of the structural support;

[0057] By stretching the inner support frame 2, the longitudinal bent metal wire 211 is elongated and straightened, and the connecting part can also move accordingly, thereby driving the fan-shaped support mesh 11 to deform, that is, the outer support frame 1 can also be stretched and deformed in cooperation with the upper support wire 12 and the lower support wire 13. The angles of the two adjacent inner support wires 14 change when the inner support frame 2 of the structural support is stretched, thereby ensuring that the fan-shaped support mesh 11 can shrink when it is stretched, and thus the structural support can be more conveniently placed in the patient's stomach.

[0058] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0059] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A fan-shaped structure stent for use in the stomach, comprising an outer support frame (1) and an inner support frame (2), characterized in that: The outer support frame (1) is sleeved and connected to the outer side of the inner support frame (2), and the inner side of the inner support frame (2) is hollow; The outer support frame (1) comprises a fan-shaped support net (11), wherein the fan-shaped support net (11) is composed of a plurality of annular bent metal wires (15), and the annular bent metal wires (15) are arranged in upper and lower layers; The inner support frame (2) comprises a columnar support net (21) and a metal ring (22), wherein the metal ring (22) is respectively connected to two ends of the columnar support net (21), and the columnar support net (21) is woven from a plurality of longitudinally bent metal wires (211).

2. The fan-shaped structure stent for use in the stomach according to claim 1, characterized in that: The outer support frame (1) further comprises a plurality of upper support metal wires (12) and a plurality of lower support metal wires (13); one end of the upper support metal wire (12) is connected to the upper end of the fan support net (11), and the other end of the upper support metal wire (12) is connected to the metal ring (22) at the upper end of the inner support frame (2); one end of the lower support metal wire (13) is connected to the lower end of the fan support net (11); the upper support metal wire (12) and the lower support metal wire (13) are both arc-shaped metal wires, and the other end of the lower support metal wire (13) is connected to the metal ring (22) at the lower end of the inner support frame (2).

3. The fan-shaped structure stent for use in the stomach according to claim 2, characterized in that: The outer support frame (1) further comprises a plurality of inner support metal wires (14), wherein the inner support metal wires (14) are connected between the fan-shaped support net (11) and the columnar support net (21), and the connection positions between two adjacent inner support metal wires (14) and the fan-shaped support net (11) are distributed in a triangular shape.

4. The fan-shaped structure stent for use in the stomach according to claim 1, characterized in that: The annular bent metal wire (15) comprises a bent portion (151) and a bent node (152), wherein the bent node (152) is located at a butt joint between two adjacent bent portions (151).

5. The fan-shaped structure stent for use in the stomach according to claim 4, characterized in that: The bending node (152) includes a butt-jointed wire segment node (1521) and a first winding node (1522), wherein the butt-jointed wire segment node (1521) is located at the lower end butt-jointed node of two adjacent bending portions (151) of the annular bending metal wire (15), and the first winding node (1522) is located at the upper end butt-jointed node of two adjacent bending portions (151) of the annular bending metal wire (15), and the first winding node (1522) is arranged in a corresponding manner and is wound around the butt-jointed wire segment node (1521).

6. The fan-shaped structure stent for use in the stomach according to claim 1, characterized in that: The longitudinal bent metal wire (211) is provided with a plurality of bending points (212), and two adjacent longitudinal bent metal wires (211) are aligned and clamped together via the bending points (212).

7. The fan-shaped structure stent for use in the stomach according to claim 6, characterized in that: The upper and lower ends of the longitudinally bent metal wire (211) are both provided with second winding nodes (213), and the second winding nodes (213) are wound around the ring body of the metal ring (22).

8. The fan-shaped structure stent for use in the stomach according to claim 1, characterized in that: The material of the outer support frame (1) and the inner support frame (2) constituting the structural support includes, but is not limited to, memory nickel alloy material.

9. The fan-shaped structure stent for use in the stomach according to claim 8, characterized in that: A "◇"-shaped diamond hole is formed between the upper and lower annular bent metal wires (15) and between two adjacent longitudinal bent metal wires (211).

10. A method for preparing a fan-shaped stent for use in the stomach, comprising the fan-shaped stent for use in the stomach as claimed in any one of claims 1 to 9, characterized in that: The preparation method comprises the following steps: A metal wire made of a memory nickel alloy material is bent to form a layer of annular bent metal wire (15), and the metal wire is further bent to prepare another layer of annular bent metal wire (15), and a butt joint wire segment (1521) is arranged at the upper butt joint node of two adjacent bending portions (151) of the annular bent metal wire (15), and a first winding node (1522) is arranged at the lower butt joint node of two adjacent bending portions (151) of the annular bent metal wire (15), and the first winding node (1522) arranged in a corresponding position is wound around the butt joint wire segment (1521), so that the upper and lower annular bent metal wires (15) are butt jointed by a characteristic butt joint method of the bending node (152), so as to realize the preparation of a fan-shaped support net (11); A metal wire made of a memory nickel alloy material is bent to form a longitudinal bent metal wire (211), and the metal wire is further bent to prepare another longitudinal bent metal wire (211), and two adjacent longitudinal bent metal wires (211) are fixedly placed at a bending point (212) to form a stable connection, and second winding nodes (213) arranged at the upper and lower ends of the longitudinal bent metal wire (211) are wound around the ring body of the metal ring (22), so as to realize the preparation of the inner support frame (2); An upper supporting metal wire (12) and a lower supporting metal wire (13) are respectively connected to the upper and lower ends of the fan-shaped supporting net (11), an inner supporting metal wire (14) is connected to the inner side surface of the fan-shaped supporting net (11), and the other ends of the upper supporting metal wire (12) and the lower supporting metal wire (13) are respectively connected to the upper and lower metal rings (22) of the inner supporting frame (2), and the other end of the inner supporting metal wire (14) is connected to the longitudinally bent metal wire (211), so as to form the overall preparation of the structural support; By stretching the inner support frame (2), the longitudinal bent metal wire (211) is stretched and straightened, and the connection part can also move accordingly, thereby driving the fan-shaped support net (11) to deform, that is, the outer support frame (1) can also be stretched and deformed in cooperation with the action of the upper support wire (12) and the lower support wire (13). The angles of the two adjacent inner support wires (14) change when the inner support frame (2) of the structural support is stretched, thereby ensuring that the fan-shaped support net (11) can shrink when it is stretched and deformed, so that the structural support can be more conveniently taken in and placed in the patient's stomach.

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