Anti-proliferative medical stent

Abstract

The application relates to the technical field of medical appliances, and discloses a hyperplasia-preventing medical support, which comprises a medical support body, a positioning assembly and a plug-in assembly. The medical support body comprises a first support, a second support and a third support. The positioning assembly is in two groups, and one end of the second support and one end of the first support are respectively provided with the positioning assemblies. The positioning assembly and the plug-in assembly are connected in a mode, so that the number of the first supports between the second support and the third support can be adjusted. The number of the first supports is increased or reduced according to the range of the diseased part of a patient, so that the first support, the second support and the third support are connected quickly without tools through the positioning assembly and the plug-in assembly, and the use demand of the patient at the diseased part is satisfied as accurately as possible.

Description

Technical Field

[0001] This application relates to the field of medical device technology, specifically to a medical stent for preventing hyperplasia. Background Technology

[0002] Medical stents, also known as esophageal stents, are medical devices used to treat esophageal strictures or fistulas. They are tubular devices placed in the esophagus under endoscopic or X-ray guidance, usually made of metal or plastic. Similar to the vascular stents used in heart bypass surgery, they can expand and support the esophagus. They are inserted through the mouth into the narrowed or blocked area of ​​the esophagus to open up the narrowed esophagus, restore the passage of food, relieve swallowing difficulties, improve nutritional status, and improve the patient's quality of life.

[0003] Nickel-titanium shape memory alloy wires are often used to fabricate esophageal stents, such as the covered esophageal stent, which is a self-expanding mesh stent made of nickel-titanium shape memory alloy wires. Nickel-titanium shape memory alloys have excellent biocompatibility and corrosion resistance.

[0004] Because esophageal stents are manufactured in several specific lengths, and the extent of the disease varies from patient to patient, the stent may be too short or too long for the patient's disease area, thus failing to accurately meet the patient's needs. Utility Model Content

[0005] The purpose of this application is to provide a medical stent for preventing hyperplasia, in order to solve the problem mentioned in the background art that the esophageal stent may be too short or too long for the affected area of ​​the patient, thus failing to accurately meet the patient's needs.

[0006] To achieve the above objectives, this application provides the following technical solution: This utility model provides a medical stent for preventing hyperplasia, comprising: a medical stent body, a positioning component, and a insertion component. The medical stent body includes a first stent, a second stent, and a third stent. The number of positioning components is two sets, with the two sets of positioning components respectively disposed at one end of the second stent and at one end of the first stent. The number of insertion components is two sets, with the two sets of insertion components respectively disposed at one end of the third stent and at the other end of the first stent.

[0007] By adopting the above technical solution, the support range of the stent can be adjusted according to the extent of the patient's lesion.

[0008] Preferably, the first, second, and third supports are made of nickel-titanium shape memory alloy wire, and the weaving density of the second and third supports is sparser than that of the first support.

[0009] By adopting the above technical solution, the sparser parts can be attached to the human body surface to avoid causing discomfort and thus preventing tissue hyperplasia.

[0010] Preferably, the positioning component includes a first fixing ring disposed at one end of the second bracket and one end of the first bracket.

[0011] By adopting the above technical solution, a fixed connection can be provided for subsequent structures.

[0012] Preferably, the positioning component further includes an L-shaped groove and a cylindrical groove formed on the first fixing ring.

[0013] By adopting the above technical solution, it is possible to provide a way for subsequent structures to be inserted into the interior for positioning and fixation.

[0014] Preferably, the plug-in assembly includes a second fixing ring disposed at one end of the third bracket and the other end of the first bracket, the second fixing ring having the same shape as the first fixing ring.

[0015] By adopting the above technical solution, the diameters of the No. 2 and No. 1 fixation rings are consistent with the diameters of the No. 1, No. 2, and No. 3 stents, which can reduce patient discomfort.

[0016] Preferably, the plug-in assembly further includes an L-shaped plug-in block and a plug-in post integrally formed on the outer wall of the second fixing ring, wherein the L-shaped plug-in block is made of an elastic metal material.

[0017] By adopting the above technical solution, the L-shaped plug-in block can be inserted into the L-shaped groove for fixation through its own elastic deformation.

[0018] Preferably, the L-shaped plug and the plug post are respectively disposed inside the L-shaped groove and the cylindrical groove.

[0019] By adopting the above technical solution, structural positioning and fixation can be achieved through plug-in connection.

[0020] In summary, this application includes at least one of the following beneficial effects: (1) By setting up a positioning component and a plug-in component, and the connection method of the positioning component and the plug-in component, the number of No. 1 stents between No. 2 stents and No. 3 stents can be adjusted. By increasing or decreasing the number of No. 1 stents according to the extent of the patient's lesion, the No. 1 stent, No. 2 stent and No. 3 stents can be quickly connected without the aid of tools through the positioning component and the plug-in component, so as to meet the patient's use needs at the lesion site as accurately as possible.

[0021] (2) By setting up No. 1, No. 2 and No. 3 stents, the No. 2 and No. 3 stents adopt a sparser weaving method compared with the No. 1 stent. While maintaining structural strength, the special weaving technology of the No. 2 and No. 3 stents will have a softer feel than the No. 1 stent located in the middle position, reducing the stimulation to the inner wall of the human body cavity, thereby achieving the prevention of tissue hyperplasia. Attached Figure Description

[0022] Figure 1 This is a three-dimensional top view of the structure of this application; Figure 2 This is a schematic diagram of the three-dimensional unfolded structure of this application; Figure 3 This is a schematic diagram of the unfolded structure of this application; Figure 4 This is a three-dimensional structural diagram of the positioning component and the plugging component of this application; Figure 5 This is a three-dimensional cross-sectional structural diagram of the positioning component and the plug-in component of this application.

[0023] In the diagram: 1. Support No. 1; 2. Support No. 2; 3. Support No. 3; 4. Positioning assembly; 401. Fixing ring No. 1; 402. L-shaped groove; 403. Cylindrical groove; 5. Plug-in assembly; 501. Fixing ring No. 2; 502. L-shaped plug-in block; 503. Plug-in post. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] The following is in conjunction with the appendix Figure 1-5 The embodiments of this application will be described in further detail.

[0026] Please see Figures 1-5 This embodiment provides a technical solution: a medical stent for preventing hyperplasia, comprising: a first stent 1, a second stent 2, a third stent 3, a positioning component 4, and a insertion component 5; The main body of the medical stent includes stent 1, stent 2, and stent 3. Stent 1, stent 2, and stent 3 are made of nickel-titanium shape memory alloy wire. The weaving density of stent 2 and stent 3 is relatively sparse compared to the weaving density of stent 1.

[0027] The number of positioning components 4 is two sets. The two sets of positioning components 4 are respectively set at one end of the second bracket 2 and at one end of the first bracket 1. The positioning component 4 includes a first fixing ring 401 set at one end of the second bracket 2 and one end of the first bracket 1, and an L-shaped groove 402 and a cylindrical groove 403 opened on the first fixing ring 401.

[0028] There are two sets of plug-in components 5. The two sets of plug-in components 5 are respectively set at one end of the third bracket 3 and at the other end of the first bracket 1. The plug-in component 5 includes a second fixing ring 501 set at one end of the third bracket 3 and the other end of the first bracket 1. The second fixing ring 501 has the same shape as the first fixing ring 401. An L-shaped plug-in block 502 and a plug-in post 503 are integrally formed on the outer wall of the second fixing ring 501. The L-shaped plug-in block 502 is made of elastic metal material. The L-shaped plug-in block 502 and the plug-in post 503 are respectively set inside the L-shaped groove 402 and the cylindrical groove 403.

[0029] The implementation principle of the anti-proliferative medical stent of this application is as follows: First, adjust the length of the assembled stent 1, stent 2, and stent 3 according to the extent of the patient's lesion. At this point, multiple sets of stent 1 can be added to meet the patient's required length, depending on the extent of the lesion.

[0030] Secondly, at this time, the positioning component 4 and the plugging component 5 can enable the first bracket 1, the second bracket 2 and the third bracket 3 to be quickly and stably fixedly connected without the aid of external tools.

[0031] Finally, the first fixing ring 401 and the second fixing ring 501 are fitted together, so that the L-shaped groove 402 and the cylindrical groove 403 on the first fixing ring 401 are aligned with the L-shaped insertion block 502 and the insertion post 503 on the second fixing ring 501, respectively. This makes the L-shaped insertion block 502 fixed in the L-shaped groove 402 and the insertion post 503 positioned inside the cylindrical groove 403.

[0032] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A medical stent for preventing hyperplasia, characterized in that, include: The main body of the medical stent includes a first stent (1), a second stent (2) and a third stent (3). Positioning component (4), the number of positioning components (4) is two sets, the two sets of positioning components (4) are respectively set at one end of the second bracket (2) and at one end of the first bracket (1); The number of plug-in components (5) is two sets, and the two sets of plug-in components (5) are respectively set at one end of the third bracket (3) and at the other end of the first bracket (1).

2. The anti-hyperplastic medical stent according to claim 1, characterized in that: The first bracket (1), the second bracket (2) and the third bracket (3) are made of nickel-titanium shape memory alloy wire. The weaving density of the second bracket (2) and the third bracket (3) is relatively sparse compared with the weaving density of the first bracket (1).

3. The anti-hyperplasia medical stent according to claim 1, characterized in that: The positioning component (4) includes a first fixing ring (401) disposed at one end of the second bracket (2) and one end of the first bracket (1).

4. The anti-hyperplasia medical stent according to claim 3, characterized in that: The positioning component (4) also includes an L-shaped groove (402) and a cylindrical groove (403) formed on the first fixing ring (401).

5. The anti-hyperplasia medical stent according to claim 1, characterized in that: The plug-in assembly (5) includes a second fixing ring (501) disposed at one end of the third bracket (3) and the other end of the first bracket (1), the second fixing ring (501) having the same shape as the first fixing ring (401).

6. The anti-hyperplasia medical stent according to claim 5, characterized in that: The plug-in assembly (5) also includes an L-shaped plug-in block (502) and a plug-in post (503) integrally formed on the outer wall of the second fixing ring (501). The L-shaped plug-in block (502) is made of elastic metal material.

7. The anti-hyperplasia medical stent according to claim 6, characterized in that: The L-shaped plug block (502) and plug post (503) are respectively disposed inside the L-shaped groove (402) and the cylindrical groove (403).

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