CN-122004980-A - Vascular rivet for plugging

Abstract

The invention discloses a vascular rivet for plugging, which belongs to the technical field of medical appliances and comprises a netlike rivet ring body formed by winding metal wires, wherein the rivet ring body axially comprises a first rivet body and a second rivet body which are connected, and cilia are arranged on the surface of the first rivet body. The invention solves the problems that the existing covered stent can block branch blood vessels by a covered section, and blood can not enter the branch blood vessels, thereby causing a plurality of complications such as ischemia of other organs and the like.

Inventors

• XIANG HUA
• LI HAIXU

Assignees

• 湖南微介科技有限公司

Dates

Publication Date

20260512

Application Date

20260318

Claims (10)

1. 1. The vascular rivet for plugging is characterized by comprising a netlike rivet ring body formed by winding metal wires, wherein the rivet ring body comprises a first rivet body and a second rivet body which are connected along the axial direction of the rivet ring body; cilia are arranged on the surface of the first rivet body.
2. 2. The vascular rivet for plugging as set forth in claim 1, wherein the first rivet body has a diameter larger than that of the second rivet body, and the first rivet body and the second rivet body are coaxially connected in an axial direction to form a stepped structure with a thin proximal end and a thick distal end.
3. 3. The vascular rivet for plugging as defined in claim 2, wherein the first rivet body has a large-diameter disc-shaped net-shaped winding structure, and cilia are radially distributed on the outer peripheral surface of the first rivet body; The second rivet body is of a small-diameter disc-shaped reticular winding structure and is fixedly connected with one side end surface of the first rivet body in a coaxial way.
4. 4. A vascular rivet as defined in claim 2, wherein the first rivet body and the second rivet body are integrally formed by heat setting.
5. 5. A vascular rivet for occlusion according to claim 2, wherein the first rivet body has a diameter of 0.5-40mm and a thickness of 1.0-15mm; the diameter of the second rivet body is 0.5-10mm, and the thickness is 0.5-10mm.
6. 6. The vascular rivet for plugging as set forth in claim 2, wherein said first rivet body and said second rivet body are each of a multi-layer spirally wound circular ring array structure, and gaps are left between adjacent wound layers, said cilia protruding radially from an outer peripheral surface of said first rivet body along said gaps.
7. 7. A vascular rivet for plugging as defined in claim 1, wherein the rivet ring body is formed by winding one or more metal wires of platinum-tungsten alloy, platinum, tungsten, gold, silver, tantalum, nickel-titanium alloy, cobalt-chromium alloy or platinum-iridium alloy.
8. 8. A vascular rivet for occlusion according to claim 1, wherein the cilia material is one or more of polyester fiber, polyamide fiber, polyglycolide-lactide or resin.
9. 9. A vascular rivet for occlusion according to claim 1, wherein the distal end of the rivet collar is provided with a rounded bulb.
10. 10. A vascular rivet for occlusion according to claim 1, wherein the wire constituting the rivet body has a diameter of 0.01-0.2mm.

Description

Vascular rivet for plugging Technical Field The invention relates to the technical field of medical instruments, in particular to a vascular rivet for plugging. Background With the rising incidence of cardiovascular diseases such as hypertension, the incidence of acute aortic diseases such as aortic dissection and aneurysm is also significantly increased. Wherein, the acute Stanford A-type aortic dissection and other diseases are extremely dangerous, and if surgical intervention or interventional intervention is not performed in time, the death rate is extremely high. Endovascular interventional exclusion is an important minimally invasive approach to treating such diseases today, typically by implanting a stent graft to isolate blood flow from the diseased vessel wall. However, for lesions involving important branch vessels, when the traditional covered stent is used for blocking a breach, the risk of ischemia caused by covering the opening of the branch vessel exists, and once the opening of the branch vessel is blocked by the covered section of the covered stent, blood cannot enter the branch vessel, so that a plurality of complications such as the risk of ischemia of other organs can be caused. In view of this, the present invention provides a new solution to the above-mentioned problems. Disclosure of Invention The invention aims to provide a vascular rivet for plugging, which solves the problem that the existing covered stent is easy to cover the orifice of a branch blood vessel, and solves the problem that the vascular rupture is accurately plugged. The technical purpose of the invention is achieved by the following technical scheme. A vascular rivet for plugging comprises a netlike rivet ring body formed by winding metal wires, wherein the rivet ring body comprises a first rivet body and a second rivet body which are connected along the axial direction of the rivet ring body; cilia are arranged on the surface of the first rivet body. It is further preferable that the diameter of the first rivet body is larger than that of the second rivet body, and the first rivet body and the second rivet body are coaxially connected in an axial direction to form a stepped structure with a thin proximal end and a thick distal end. Further preferably, the first rivet body is a large-diameter disc-shaped net-shaped winding structure, and cilia are radially distributed on the outer peripheral surface of the first rivet body; The second rivet body is of a small-diameter disc-shaped reticular winding structure and is fixedly connected with one side end surface of the first rivet body in a coaxial way. It is further preferred that the first rivet body and the second rivet body are formed into an integral structure by heat setting. It is further preferred that the first rivet body has a diameter of 0.5-40mm and a thickness of 1.0-15mm; the diameter of the second rivet body is 0.5-10mm, and the thickness is 0.5-10mm. It is further preferable that the first rivet body and the second rivet body are of multi-layer spirally wound circular ring array structures, gaps are reserved between adjacent winding layers, and cilia protrude out of the outer peripheral surface of the first rivet body along the radial direction of the gaps. It is further preferable that the rivet ring body is formed by winding one or more metal wires of platinum tungsten alloy, platinum, tungsten, gold, silver, tantalum, nickel titanium alloy, cobalt chromium alloy or platinum iridium alloy. It is further preferred that the cilia material is one or more of polyester fiber, polyamide fiber, polyglycolide or resin. It is further preferable that the distal end of the rivet ring body is provided with a round ball head. It is further preferable that the diameter of the wire constituting the rivet ring body is 0.01 to 0.2mm. In summary, the invention has the following beneficial effects: the vascular rivet for plugging comprises a net-shaped rivet ring body formed by winding metal wires, wherein the rivet ring body comprises a first rivet body and a second rivet body which are connected with each other along the axial direction of the rivet ring body, and cilia are arranged on the surface of the first rivet body. After implantation of the vascular rivet, the ciliated first rivet body is precisely located inside the vessel wall interlayer or the lacerations. Cilia greatly increases the surface area and packing density of the area, can rapidly induce platelet aggregation and fibrin deposition, and forms rapid and stable thrombus at the local part of the target rupture, thereby realizing high-efficiency plugging. The second rivet body positioned in the true lumen of the blood vessel greatly reduces the risk of thrombus formation in a normal blood flow environment because the surface of the second rivet body is smooth and bare metal. The device effectively avoids serious complications of thrombotic stenosis or occlusion of a target blood vessel or a downstream branc