A rotatable vascular stent system

Abstract

The application discloses a rotatable blood vessel stent system and belongs to the technical field of high-end equipment manufacturing, in particular to the technical field classified under the classification code B65D, more particularly to the technical field of medical catheters, and more particularly to the rotatable blood vessel stent system. The inventor sets the first developing belt and the second developing belt capable of covering the first developing ring and the second developing ring respectively on the balloon, judges the positions of the first developing ring and the second developing ring through the positions of the first developing belt and the second developing belt, drives the balloon system to rotate through the handle connected with the pressure charging port, drives the stent to rotate through the balloon system, thereby adjusts the positional relationship of the first developing ring and the second developing ring, releases the stent when the developing ring at the proximal end is located at the opposite side of the bifurcated blood vessel, thereby avoids that the developing ring at the proximal end on the stent is located at the bifurcated blood vessel port and blocks the blood vessel.

Description

Technical Field

[0001] This invention belongs to the field of high-end equipment manufacturing technology, specifically to the technical field of classification number B65D, more specifically to the field of medical catheter technology, and more particularly to a rotatable vascular stent system. Background Technology

[0002] Current biodegradable stent systems, due to the non-visible nature of the stent material itself, typically have visible markers installed at both ends of the stent. To ensure visibility, the projected area of ​​these markers is usually several times larger than the stent's waveguide. Patent application number 201721623478 discloses a visible vascular stent comprising a stent body, a visible structure, and an outer membrane. The stent body has a hollow tubular structure with a perforated mesh wall. The visible structure is located at both ends of the perforated mesh portion of the stent body. This visible structure allows the stent's position to be monitored by X-ray imaging while it is inside the body. However, during X-ray observation, the visible structure appears several times larger than the stent waveguide, a component of the stent body.

[0003] When using a stent to support a bifurcation lesion, X-ray imaging may reveal that the visualized structure is several times larger than the stent's main beam, making it difficult for operators to pinpoint the exact location of the stent's visible markers. This could result in the visualized structure being released at the bifurcation opening. When the visualized structure is released at the bifurcation opening, its larger area compared to the stent's main beam increases the risk of thrombosis and blockage of the branch vessel. Summary of the Invention

[0004] The purpose of this invention is to provide a rotatable vascular stent system to solve the problems mentioned in the background art regarding the use of existing vascular stent systems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rotatable vascular stent system, comprising:

[0006] A hollow columnar support includes several wave rods and a support beam connecting adjacent wave rods. The wave rods are wavy with repeated convex peaks and concave valleys. A first developing ring and a second developing ring are respectively provided between the wave rods at both ends of the support. The first developing ring and the second developing ring have a centrally symmetrical structure.

[0007] A balloon delivery system includes a balloon, a tip connected to one end of the balloon, an outer tube connected to the other end of the balloon, an inflation port connected to the other end of the outer tube, and an inner tube penetrating the inflation port, the outer tube, the balloon, and the tip. The inner tube, the tip, the balloon, and the outer tube form an inflation channel. The upper side of the balloon is provided with a first radiopaque band, and the lower side is provided with a second radiopaque band. When the support and the balloon are pressed together, the first radiopaque band covers the first radiopaque ring, and the second radiopaque band covers the second radiopaque ring.

[0008] A handle is connected to the pressurization port.

[0009] Preferably, the balloon includes a balloon body, a first connecting portion and a second connecting portion respectively connected to both ends of the balloon body, the first connecting portion being connected to the tip, the second connecting portion being connected to the outer tube, and the first and second imaging bands being disposed on the balloon body.

[0010] Preferably, the length of the second developing band is greater than the length of the first developing band.

[0011] Preferably, the thickness of the first developing band is 0.01-0.1 mm.

[0012] Preferably, the thickness of the second developing tape is 0.01-0.1 mm.

[0013] Preferably, the material of the first developing tape is selected from one or more alloy foils selected from platinum, iridium, tungsten, tantalum, barium, and bismuth.

[0014] Preferably, the material of the second developing tape is selected from one or more alloy foils selected from platinum, iridium, tungsten, tantalum, barium, and bismuth.

[0015] Preferably, the first developing ring includes a first connecting ring and a second connecting ring fixedly connected to the first connecting ring.

[0016] Preferably, the width of the first developing band is 0.5 mm.

[0017] Preferably, the width of the second developing band is 0.5 mm.

[0018] During stent implantation, once the balloon and stent reach the target location, the balloon is inflated to 2 atm through the inflation channel, slightly expanding the balloon and stent. The balloon delivery system is adjusted by rotating the proximal handle, causing the balloon delivery system to rotate the first and second contrast-enhancing rings of the stent. When X-rays show the first and second contrast-enhancing bands on the balloon body at their outermost edges on both sides, with the longer contrast-enhancing band located opposite the bifurcation opening, it indicates that the first and second contrast-enhancing rings of the stent are positioned at their outermost edges on both sides of the balloon, and the proximal contrast-enhancing ring is opposite the bifurcation opening. Once the contrast marker is confirmed to be opposite the bifurcation opening, the stent can be completely released. Otherwise, due to the large area of ​​the contrast-enhancing ring, it may block the bifurcation opening, reducing the lumen area of ​​the bifurcation opening.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The inventors have designed a first and a second contrast-enhancing band on the balloon to cover the first and second contrast-enhancing rings, respectively. The positions of the first and second contrast-enhancing bands are used to determine the positions of the first and second contrast-enhancing rings. By rotating the handle connected to the inflation port, the balloon system is rotated, which in turn rotates the stent, thereby adjusting the positional relationship between the first and second contrast-enhancing rings. When the proximal contrast-enhancing ring is on the opposite side of the bifurcation vessel, the stent is released, thus preventing the proximal contrast-enhancing ring on the stent from being located at the bifurcation vessel opening and blocking the vessel. Attached Figure Description

[0021] Figure 1 This is a partial structural diagram of a vascular stent system located in a bifurcation vessel.

[0022] Figure 2 This is a schematic diagram of the balloon body's deployment structure;

[0023] Figure 3 This is a schematic diagram of the unfolded hollow columnar support.

[0024] In the diagram: 1. Bifurcation vessel; 2. Second connecting part; 3. Outer tube; 4. Inner tube; 5. First contrast band; 6. Second contrast band; 7. First connecting part; 8. Tip; 9. Balloon body; 10. Support beam; 11. Wave rod; 12. Stent; 13. First contrast ring; 14. Second contrast ring; 15. Opposite side of the vessel bifurcation. Detailed Implementation

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

[0026] Please see Figure 1-3 The present invention provides a technical solution: a rotatable vascular stent system, comprising a hollow columnar stent 12, the stent 12 comprising a plurality of wave rods 11 and a support beam 10 connecting adjacent wave rods 11, the wave rods 11 being wave-shaped with repeated extensions of convex peaks and concave valleys, and a first radiopaque ring 13 and a second radiopaque ring 14 being respectively provided between the wave rods 11 at both ends of the stent, the first radiopaque ring 13 and the second radiopaque ring 14 having a centrally symmetrical structure;

[0027] A balloon delivery system includes a balloon, a tip 8 connected to one end of the balloon, an outer tube 3 connected to the other end of the balloon, an inflation port connected to the other end of the outer tube 3, and an inner tube 4 penetrating the inflation port, the outer tube 3, the balloon, and the tip 8. The inner tube 4, the tip 8, the balloon, and the outer tube 3 form an inflation channel. A first imaging band 5 is provided on the upper side of the balloon, and a second imaging band 6 is provided on the lower side. When the support 12 is pressed together with the balloon, the first imaging band 5 covers a first imaging ring 13, and the second imaging band 6 covers a second imaging ring 14. A handle is connected to the inflation port. The balloon includes a balloon body 9, a first connecting part 7 and a second connecting part 2 connected to both ends of the balloon body 9. The first connecting part 7 is connected to the tip 8, and the second connecting part 2 is connected to the outer tube 3. The first imaging band 5 and the second imaging band 6 are disposed on the balloon body 9. The length of the second imaging band 6 is greater than the length of the first imaging band 5. The thickness of the first imaging band 5 is 0.1 mm. The thickness of the second developing belt 6 is 0.1 mm. The material of the first developing belt 5 is platinum. The material of the second developing belt 6 is platinum. The first developing ring includes a first connecting ring and a second connecting ring fixedly connected to the first connecting ring. The width of the first developing belt is 0.5 mm, and the width of the second developing belt is 0.5 mm.

[0028] During stent implantation, once the balloon and stent 12 reach the target position, the balloon is inflated to 2 atm through the inflation channel, causing the balloon and stent 12 to expand slightly. The balloon delivery system is adjusted by rotating the proximal handle, which in turn causes the balloon delivery system to rotate the first radiopaque ring 13 and the second radiopaque ring 14 of the stent 12. When the first radiopaque band 5 and the second radiopaque band 6 on the balloon body 9 are seen to be at the outermost edge of the left and right sides of the balloon under X-ray, it indicates that the first radiopaque ring 13 and the second radiopaque ring 14 of the stent are at the outermost edge of the left and right sides of the balloon. The inventors have installed a first radiopaque band 5 and a second radiopaque band 6 on the balloon to cover the first radiopaque ring 13 and the second radiopaque ring 14 respectively. The positions of the first radiopaque band 5 and the second radiopaque band 6 are used to determine the positions of the first radiopaque ring 13 and the second radiopaque ring 14. By rotating the handle connected to the inflation port, the balloon system is rotated, and the balloon system drives the stent to rotate, thereby adjusting the positional relationship between the first radiopaque ring 13 and the second radiopaque ring 14. When the proximal radiopaque ring is on the opposite side 15 of the vascular bifurcation, the stent is released, thereby preventing the proximal radiopaque ring on the stent from being located at the bifurcation opening and blocking the blood vessel.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotatable vascular stent system, characterized in that: include: The support includes a hollow columnar support, which includes several wave rods and a support beam connecting adjacent wave rods. The wave rods are wavy with repeated convex peaks and concave valleys. A first developing ring and a second developing ring are respectively provided between the wave rods at both ends of the support. The first developing ring and the second developing ring are centrally symmetrical around the center point of the support. A balloon delivery system includes a balloon, a tip connected to one end of the balloon, an outer tube connected to the other end of the balloon, and an inflation port connected to the other end of the outer tube. A handle is connected to the inflation port, and an inner tube extends through the inflation port, the outer tube, the balloon, and the tip. The inner tube, the tip, the balloon, and the outer tube form an inflation channel. A first radiopaque band is provided on the upper side of the balloon, and a second radiopaque band is provided on the lower side. When the support and the balloon are pressed together, the first radiopaque band covers a first radiopaque ring, and the second radiopaque band covers a second radiopaque ring. The length of the second radiopaque band is greater than the length of the first radiopaque band.

2. The rotatable vascular stent system according to claim 1, characterized in that: The balloon includes a balloon body, a first connecting part and a second connecting part respectively connected to both ends of the balloon body, the first connecting part being connected to the tip, the second connecting part being connected to the outer tube, and the first and second imaging bands being disposed on the balloon body.

3. A rotatable vascular stent system according to claim 2, characterized in that: The thickness of the first developing tape is 0.01-0.1 mm.

4. A rotatable vascular stent system according to claim 2, characterized in that: The thickness of the second developing tape is 0.01-0.1 mm.

5. A rotatable vascular stent system according to claim 2, characterized in that: The material of the first developing tape is selected from one or more alloy foils selected from platinum, iridium, tungsten, tantalum, barium, and bismuth.

6. A rotatable vascular stent system according to claim 2, characterized in that: The material of the second developing tape is selected from one or more alloy foils selected from platinum, iridium, tungsten, tantalum, barium, and bismuth.

7. A rotatable vascular stent system according to claim 1, characterized in that: The first developing ring includes a first connecting ring and a second connecting ring fixedly connected to the first connecting ring.

8. A rotatable vascular stent system according to claims 1-7, characterized in that: The width of the first developing band is 0.3-0.8 mm.

9. A rotatable vascular stent system according to claim 1, characterized in that: The width of the second developing band is 0.3-0.8 mm.

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