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1. WO2022007560 - COVERED STENT

Publication Number WO/2022/007560
Publication Date 13.01.2022
International Application No. PCT/CN2021/098313
International Filing Date 04.06.2021
IPC
A61F 2/07 2013.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
2Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
02Prostheses implantable into the body
04Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
06Blood vessels
07Stent-grafts
A61F 2/90 2013.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
2Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
82Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
86Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure
90characterised by a net-like or mesh-like structure
Applicants
  • 深圳市先健畅通医疗有限公司 SHENZHEN LIFETECH ENDOVASCULAR MEDICAL CO., LTD. [CN]/[CN]
Inventors
  • 肖本好 XIAO, Benhao
  • 方毅 FANG, Yi
Agents
  • 北京辰权知识产权代理有限公司 BEIJING CHEN QUAN INTELLECTUAL PROPERTY LAW FIRM
Priority Data
202010641395.906.07.2020CN
202011607899.529.12.2020CN
Publication Language Chinese (zh)
Filing Language Chinese (ZH)
Designated States
Title
(EN) COVERED STENT
(FR) STENT RECOUVERT
(ZH) 覆膜支架
Abstract
(EN) A covered stent (100A), comprising a mesh-shaped support structure, and further comprising a first section (10A), and a second section (20A) connected to a proximal end and/or a distal end of the first section, wherein the first section comprises a plurality of first corrugated rings (11A) and a first covering film (12A), which covers surfaces of the first corrugated rings; the second section comprises a plurality of second corrugated rings (21A), with two adjacent second corrugated rings being fixedly connected to each other; and a plurality of windows (201A) are formed between the plurality of second corrugated rings, and the plurality of first corrugated rings and the plurality of second corrugated rings form the support structure. The second section of the covered stent will not block an opening of a branch vessel (400), and thus it is not necessary to reduce the length of the covered stent in a main branch vessel, such that the covered stent has a sufficiently long anchoring zone in the main branch vessel so as to ensure that the covered stent has sufficient anchoring force and thus prevent the displacement or internal leakage of the distal end of the covered stent, thereby ensuring a good closure effect.
(FR) L'invention concerne un stent recouvert (100A), comprenant une structure de support en forme de maille, et comprenant en outre une première section (10A), et une seconde section (20A) reliée à une extrémité proximale et/ou à une extrémité distale de la première section, la première section comprenant une pluralité de premières bagues ondulées (11A) et un premier film de recouvrement (12A), qui recouvre les surfaces des premières bagues ondulées ; la seconde section comprend une pluralité de secondes bagues ondulées (21A), deux secondes bagues ondulées adjacentes étant reliées de manière fixe l'une à l'autre ; et une pluralité de fenêtres (201A) sont formées entre la pluralité de secondes bagues ondulées, et la pluralité de premières bagues ondulées et la pluralité de secondes bagues ondulées forment la structure de support. La seconde section du stent recouvert ne bloque pas une ouverture d'un vaisseau ramifié (400), et il n'est donc pas nécessaire de réduire la longueur du stent recouvert dans un vaisseau ramifié principal, de sorte que le stent recouvert a une zone d'ancrage suffisamment longue dans le vaisseau ramifié principal de façon à assurer que le stent recouvert ait une force d'ancrage suffisante et empêcher ainsi le déplacement ou la fuite interne de l'extrémité distale du stent recouvert, ce qui assure un bon effet de fermeture.
(ZH) 一种覆膜支架(100A),包括网状型的支撑结构,覆膜支架还包括第一部段(10A)和与第一部段的近端和/或远端连接的第二部段(20A),第一部段包括多个第一波圈(11A)和覆盖在第一波圈的表面的第一覆膜(12A),第二部段包括多个第二波圈(21A),相邻两个第二波圈之间固定相连;多个第二波圈之间形成多个窗口(201A),且多个第一波圈和多个第二波圈构成支撑结构。覆膜支架的第二部段不会对分支血管(400)的开口造成遮挡,因此,无需减小覆膜支架在主分支血管中的长度,从而使覆膜支架在主分支血管中具有足够长的锚定区,以保证覆膜支架具有足够的锚定力,进而避免覆膜支架远端发生移位或者内漏,由此保证良好的封堵效果。
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