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Stent for blood vessel

A blood vessel and stent fixation technology, which is applied in the field of medical devices, can solve the problems of easy rupture of plaques, and achieve the effects of reducing the incidence of acute thrombosis, avoiding thrombotic events, and avoiding rupture

Pending Publication Date: 2021-10-22
SHANGHAI MICROPORT MEDICAL (GROUP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a stent for blood vessels aiming at the existing technical problems of easy rupture of atherosclerotic plaque

Method used

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  • Stent for blood vessel
  • Stent for blood vessel

Examples

Experimental program
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Effect test

Embodiment 1

[0061] This embodiment provides a bracket for a blood vessel, such as figure 2 As shown, one end of the bracket is provided with two anchor 200, and there is a three anchor 200, and the two anchors 200 connected to the same end are connected by a shaped connector 300. Wherein, the material of the anchor 200 is a cobalt chromium alloy material, and the anchor 200 is cut by a laser to a corrugated shape, and the connector 300 is also formed on the anchor 200 by laser cutting. The coating film 100 is connected to a PCL (polycaprolactone) material between the different ends of the stent and adjacent two anchors 200, and the film cover 100 thickness is 20 microns. Electrostatic spinning made. A PLLA (L-polylactic acid) monofilament having an equidistant distribution is also provided between the different ends of the bracket and adjacent two anchors 200, that is, a support member 400. The PLLA monofilament is in the inside of the coating film 100, and the supporting film 100 is assisted...

Embodiment 2

[0063] This embodiment provides a bracket for a blood vessel, such as image 3 As shown, each of the two ends of the bracud for the blood vessel is provided with an injection molded polycarbonate anchor 200, and the two anchor 200 is connected between 50 μm, the thickness is 10 μm, and the material is nickel. Support 400 of titanium alloy. The support member 400 is re-welded to the weld anchor fixing 200 by a circle of an anchor 200. The shape of the support member 400 is a shape and along the axial distribution of the stent, and the length of the support member 400 is 5% to 20% higher than the anchor of the fixing member 200, so when the bracket is released, the support member 400 will slightly The outer protrusions are pulled, and the film 100 is tightened to avoid collapse.

Embodiment 3

[0065] This embodiment provides a bracket for a blood vessel, such as Figure 4 Design, two ends of the bracket are provided with three anchor 200, and two anchor 200 connected to the same end are fitted together. 4 bending supports 400 are also provided between the different ends of the bracket and the adjacent two anchors 200 are also provided. The support member 400 is engaged with the anchor 200 on the polylactic acid tube. A coating film 100 of a polylactic acid material is connected by a polylactic acid material between the different ends of the bracket and the adjacent two anchors 200. Among them, the polylactic acid molecular weight of the anchor 200 is more than 200,000, which is greater than the molecular weight of the polylactic acid used in the coating film 100, so it can provide sufficient support. A groove is engraved on the anchor 200 to increase the fixed force.

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Abstract

The invention relates to a stent for a blood vessel. The stent comprises a coating film and an anchoring piece which are connected with each other, the anchoring piece is used for fixing the coating film in the blood vessel; the coating film is used for covering the diseased region of the blood vessel. The anchoring piece of the stent is used for better attaching the coating film to the vascular intima and fixing the coating film at an expected implantation position when the stent is scoured by blood, the coating film can hold unstable plaques on the vascular intima and prevent the unstable plaques from being broken; meanwhile, the coating film can trigger foreign body reaction in a living body, so that vascular endothelial growth is stimulated. Unstable plaques grow into stable plaques, and the occurrence rate of acute thrombus is reduced. The stent can also be used for treating vascular tearing in the interventional process, and thrombus events caused by falling of the torn vascular wall are avoided.

Description

Technical field [0001] The present invention relates to the field of medical devices, and more particularly to a bracket for a blood vessel. Background technique [0002] Atcaise atherosclerosis is considered to be a chronic inflammatory disease, and the main lesions are characterized by the endometrium lipid deposition in certain parts of the artery, and has the proliferation of smooth muscle cells and fiber matrix components, and gradually develops atherosclerosis. Puzzle, thereby causing vascular lumen stenosis or thrombosis. Among them, plaques gradually expand as the chronic progression of lesions is divided into stability or unstable plaques. The instability plaque is characterized by a thin and unstable fiber cap, which is easy to rupture. Sudden rupture can cause thrombosis, which in turn leads to acute arterial symptoms, high risk. Conversely, the fiber cap of stabilizing plaque is thicker, not easy to rupture, and clinical manifestations are symptoms caused by physical ...

Claims

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Application Information

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IPC IPC(8): A61F2/90A61L31/08A61L31/10A61L31/14
CPCA61F2/90A61L31/08A61L31/10A61L31/14A61L31/148A61L31/16A61L2300/414A61L2300/426A61L31/146A61L31/06A61F2/07A61F2002/828A61F2002/8486C08L67/04
Inventor 王雪琴李杰朱京刘伟
Owner SHANGHAI MICROPORT MEDICAL (GROUP) CO LTD
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