KR20200033757A - 형상화된 와이어를 갖는 스텐트 - Google Patents
형상화된 와이어를 갖는 스텐트 Download PDFInfo
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- KR20200033757A KR20200033757A KR1020190115567A KR20190115567A KR20200033757A KR 20200033757 A KR20200033757 A KR 20200033757A KR 1020190115567 A KR1020190115567 A KR 1020190115567A KR 20190115567 A KR20190115567 A KR 20190115567A KR 20200033757 A KR20200033757 A KR 20200033757A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS 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
- A61F2/00—Filters 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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
- A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes
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- A—HUMAN NECESSITIES
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- A61F2/00—Filters 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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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- A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes
- A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
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- A—HUMAN NECESSITIES
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- A61F2/00—Filters 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
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- A61F2/00—Filters 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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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- A61F2/00—Filters 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
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- A—HUMAN NECESSITIES
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- A61F2/00—Filters 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
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- A61F2/00—Filters 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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
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- A61L31/022—Metals or alloys
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- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/14—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61F2/00—Filters 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
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- A—HUMAN NECESSITIES
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- A61F2/00—Filters 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
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- A61F2002/91525—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other within the whole structure different bands showing different meander characteristics, e.g. frequency or amplitude
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS 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
- A61F2/00—Filters 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
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- A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2210/0014—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol
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- A—HUMAN NECESSITIES
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
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- Animal Behavior & Ethology (AREA)
- Heart & Thoracic Surgery (AREA)
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- Cardiology (AREA)
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- Oral & Maxillofacial Surgery (AREA)
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- Surgery (AREA)
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Abstract
Description
도 1은 본 발명에 따른 스텐트의 3차원 사시도이다.
도 2a는 본 발명에 따른 확장 상태의 스텐트의 측면도이다.
도 2b는 본 발명에 따른 접힌 상태의 도 2a의 스텐트의 측면도이다.
도 3a는 본 발명에 따른 스텐트의 와이어의 2차원 도면이다.
도 3b는 본 발명에 따른 도 3a의 와이어의 3차원 도면이다.
도 3c는 도 3b에 도시된 와이어와 같은 스텐트의 와이어의 3차원 형상을 기술하기 위한 좌표계의 개략도이다.
도 4 내지 도 9는 본 발명에 따른 스텐트의 원주 둘레의 와이어들의 예시 배치를 도시하는 스텐트의 와이어들의 2차원 도면들이다.
도 10a 내지 도 10e는 본 발명에 따른 스텐트의 와이어에 대한 예시 파형 패턴들 또는 파동 패턴들을 도시한다.
도 11은 본 발명에 따른 스텐트의 예시 와이어 직조 패턴을 도시한다.
도 12a 내지 도 12d는 본 발명에 따른 가변적인 폭을 갖는 예시 와이어 세그먼트들을 도시한다.
Claims (26)
- 스텐트로서,
제1 개방 단부로부터 제2 개방 단부까지 측정되는 스텐트 길이;
각각이 3차원 진동 부분을 포함하는 둘 이상의 와이어들을 포함하고, 상기 진동 부분은:
z-축에 평행하게 측정되는 진동 부분 길이;
상기 z-축을 중심으로 360° 미만의 원호에 걸쳐 원주 상에서 연장되고, 상기 진동 부분의 길이를 연장시키고, 상기 진동 부분 길이에 걸쳐 상기 z-축으로부터 실질적으로 일정한 반경을 유지하는 곡률; 및
원주 상에서 진동하고, 상기 곡률의 상기 원호 내에 한정되고, 상기 진동 부분 길이에 걸쳐 연장되는 파형을 포함하고,
상기 진동 부분 길이는 상기 스텐트 길이의 대부분을 연장시키고,
하나 이상의 와이어들의 각각의 상기 진동 부분은 상기 하나 이상의 와이어들 중 모든 다른 와이어의 상기 진동 부분에 독립적으로 이동가능한, 스텐트. - 제1항에 있어서, 상기 둘 이상의 와이어들 중 제1 와이어를 상기 제1 개방 단부에 근접한 상기 둘 이상의 와이어들 중 제2 와이어에 부착하는 제1 결합부를 추가로 포함하고, 상기 제1 결합부는 상기 제1 와이어와 상기 제2 와이어 사이의 유일한 부착된 결합부인, 스텐트.
- 제1항에 있어서, 상기 둘 이상의 와이어들 중 제1 와이어는 상기 제1 와이어의 파형의 1 진동 주기 안에 상기 둘 이상의 와이어들 중 인접한 제2 와이어의 아래에서 교차하고, 위에서 교차하는, 스텐트.
- 제1항에 있어서, 상기 둘 이상의 와이어들의 각각은 상기 둘 이상의 와이어들 중 모든 다른 와이어로부터 독립적으로 형성된, 스텐트.
- 제1항에 있어서,
상기 제1 개방 단부에 인접하게 위치설정되고, 상기 제1 개방 단부와 상기 진동 부분 사이에서 연장되는 제1 단부 구조물; 및
상기 제2 개방 단부에 인접하게 위치설정되고, 상기 제2 개방 단부와 상기 진동 부분 사이에서 연장되는 제2 단부 구조물을 추가로 포함하는, 스텐트. - 제5항에 있어서, 상기 제1 단부 구조물 및 상기 제2 단부 구조물 각각은 비외상성 형상(atraumatic shape)을 포함하는, 스텐트.
- 제1항에 있어서, 상기 둘 이상의 와이어들의 각각은 하나 이상의 위치들에서 상기 둘 이상의 와이어들 중 원주 상에서 인접한 와이어에 결합되는, 스텐트.
- 제1항에 있어서, 상기 둘 이상의 와이어들의 와이어는 상기 스텐트의 길이를 따라 달라지는 폭을 갖는, 스텐트.
- 스텐트로서,
z-축에 평행하게 제1 개방 단부로부터 제2 개방 단부까지 측정되는 길이;
원주; 및
각각이 3차원 파형을 포함하는 둘 이상의 와이어들을 포함하고,
각각의 파형은 상기 z-축을 중심으로 하는 원호 내에서 원주 상에서 진동하고,
각각의 파형은 상기 스텐트의 길이의 대부분에 걸쳐 상기 z-축에 평행하게 연장되고,
각각의 파형은 상기 z-축으로부터 실질적으로 일정한 반경방향 거리를 유지하고,
상기 둘 이상의 와이어들의 각각은 상기 원주를 중심으로 원주 상에서 서로 인접하게 위치설정되고,
상기 둘 이상의 와이어들의 각각은 상기 스텐트의 길이의 대부분을 따라 상기 둘 이상의 와이어들 중 모든 다른 와이어에 독립적으로 이동가능한, 스텐트. - 튜브형 스텐트로서,
원주;
제1 단부로부터 제2 단부까지의 길이; 및
상기 원주 둘레에 위치설정된 복수의 와이어들을 포함하고,
각각의 와이어는 독립적으로 형성되고,
각각의 와이어는 원주 상에서 파동하여(undulate) 상기 튜브형 스텐트의 길이의 대부분에 걸쳐 연장되는 파도 패턴을 형성하고,
각각의 와이어는 반복되는 방식으로 상기 복수의 와이어들 중 인접한 와이어의 아래 및 위로 통과하면서, 상기 튜브형 스텐트의 길이의 대부분에 걸쳐 상기 인접한 와이어에 대하여 인접한 위치를 유지하고,
상기 복수의 와이어들은 원주 상에서 서로 얽혀 상기 튜브형 스텐트를 형성하는, 튜브형 스텐트. - 제10항에 있어서, 상기 복수의 와이어들의 각각은 원호를 따라 구부러진 사전 결정된 3차원 형상을 포함하는 메모리 형상 재료를 포함하고, 상기 3차원 형상은 상기 원호 내에서 파동하는 상기 파도 패턴을 포함하는, 튜브형 스텐트.
- 스텐트로서, 상기 스텐트의 길이의 대부분에 걸쳐 연장되는, 원주 상에 위치설정된 파동 와이어들을 포함하는 튜브형 구조물을 포함하고, 상기 와이어들 각각은 원주 상에서 진동하는 파동들을 포함하고, 상기 와이어들의 각각의 상기 파동들은 원주 상에서 인접한 와이어들의 파동들 내에서 원주 상에서 오목해져서(recessing) 상기 파동 와이어들의 원주 상 위치설정만이 상기 스텐트의 원주를 정의하도록 하는, 스텐트.
- 스텐트를 제조하기 위한 방법으로서,
탄성 튜빙(elastic tubing)을 제공하는 단계;
상기 튜빙을 절취하여 복수의 실질적으로 유사한 파도 패턴들을 형성하는 단계 - 각각의 파도 패턴은:
상기 튜빙의 원주 내의 원호에 걸쳐 원주 상에서 연장되는 진폭,
축 - 상기 축을 따라 상기 파도 패턴이 반복되고, 상기 축은 상기 튜빙의 길이의 적어도 일부분을 따라 연장됨 -, 및
상기 튜빙의 관강 표면으로부터 절취된 구부러진 내측 표면을 포함함 -;
상기 복수의 파도 패턴들의 각각을 상기 튜빙으로부터 분리하는 단계;
각각의 파도 패턴을 상기 스텐트의 길이의 대부분에 걸쳐 연장되도록 위치설정하는 단계;
모든 파도 패턴의 상기 구부러진 내측 표면들을 정렬하여 집합적으로 상기 스텐트의 원주를 형성하는 단계; 및
상기 복수의 파도 패턴들로부터 튜브형 스텐트 본체의 대부분을 형성하는 단계를 포함하는, 방법. - 제13항에 있어서, 각각의 파도 패턴을 상기 복수의 파도 패턴들 중 시계 방향으로 인접한 파도 패턴 및 상기 복수의 파도 패턴들 중 반시계 방향으로 인접한 파도 패턴과 서로 얽히게 하는 단계를 추가로 포함하는, 방법.
- 제13항에 있어서, 상기 복수의 파도 패턴들 중 제1 파도 패턴을 상기 튜브형 스텐트 본체의 단부에 근접한 상기 복수의 파도 패턴들 중 제2 파도 패턴에 결합하는 단계를 추가로 포함하는, 방법.
- 제13항에 있어서, 상기 탄성 튜빙은 메모리 형상 금속을 포함하는, 방법.
- 제13항에 있어서,
상기 튜빙을 절취하여 복수의 굴곡부들을 형성하는 단계 - 각각의 굴곡부는 상기 복수의 파도 패턴들 중 인접한 두 파도 패턴들을 결합시킴 -; 및
상기 복수의 굴곡부들이 각각 상기 튜브형 스텐트 본체의 제1 단부 또는 상기 튜브형 스텐트 본체의 제2 단부에 근접하게 위치설정되도록 각각의 굴곡부를 위치설정하는 단계를 추가로 포함하는, 방법. - 제17항에 있어서, 각각의 굴곡부는 비외상성 형상을 갖는, 방법.
- 스텐트를 제조하기 위한 방법으로서,
원주 및 길이를 포함하는 탄성 튜빙을 제공하는 단계;
상기 튜빙으로부터 개별 와이어들을 절취하여 각각의 와이어가 상기 원주의 일부분에 걸쳐 피크-투-피크로 진동하는 파도 패턴을 포함하도록 하는 단계; 및
상기 와이어들을 직조하여 튜브 형상을 형성하는 단계를 포함하는, 방법. - 제17항에 있어서, 상기 튜빙으로부터 개별 와이어들을 절취하는 단계는 상기 개별 와이어들이 서로 연결해제되도록 상기 튜빙으로부터 상기 와이어들을 분리하는 단계를 추가로 포함하는, 방법.
- 제17항에 있어서, 하나 이상의 위치들에서 상기 개별 와이어들 중 제1 와이어를 상기 개별 와이어들 중 제2 와이어에 결합하는 단계를 추가로 포함하는, 방법.
- 튜브형 구조물을 포함하는 스텐트로서,
상기 스텐트의 길이의 대부분에 걸쳐 연장되는 원주 상에 위치된 파동 와이어 세그먼트들 - 상기 와이어 세그먼트들 각각은 원주 상에서 진동하는 파동들을 포함하고, 상기 와이어 세그먼트들의 각각의 상기 파동들은 원주 상에서 인접한 와이어 세그먼트들의 파동들 내에서 원주 상에서 오목해져서 상기 파동 와이어들의 원주 상 위치설정만이 상기 스텐트의 원주를 정의하도록 함 -; 및
각각 상기 스텐트의 제1 단부 또는 제2 단부에 근접하게 위치설정된 비외상성 와이어 세그먼트들 - 상기 비외상성 와이어 세그먼트들은 원주 상에서 인접한 와이어 세그먼트들을 결합함 - 을 포함하는, 스텐트. - 제22항에 있어서, 상기 파동 와이어 세그먼트들과 상기 비외상성 와이어 세그먼트들의 조합은 연속적인 구조물을 형성하는, 스텐트.
- 제22항에 있어서, 상기 파동 와이어 세그먼트들과 상기 비외상성 와이어 세그먼트들의 조합은 연속적인 와이어를 형성하는, 스텐트.
- 제22항에 있어서, 상기 파동 와이어 세그먼트들 및 상기 비외상성 와이어 세그먼트들은 교번하는 방식으로 위치설정되어 상기 스텐트의 길이를 따라 종방향으로 둘을 엮는 연속적인 와이어를 형성하고 원주 상에서 상기 스텐트의 상기 원주를 형성하는, 스텐트.
- 제25항에 있어서, 상기 연속적인 와이어의 제1 단부에 근접하게 위치설정된 제1 비외상성 단부 구조물 및 상기 연속적인 와이어의 제2 단부에 근접하게 위치설정된 제2 비외상성 단부 구조물을 추가로 포함하는, 스텐트.
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