KR102536223B1 - 보철 판막 및 제조 방법 - Google Patents
보철 판막 및 제조 방법 Download PDFInfo
- Publication number
- KR102536223B1 KR102536223B1 KR1020197032315A KR20197032315A KR102536223B1 KR 102536223 B1 KR102536223 B1 KR 102536223B1 KR 1020197032315 A KR1020197032315 A KR 1020197032315A KR 20197032315 A KR20197032315 A KR 20197032315A KR 102536223 B1 KR102536223 B1 KR 102536223B1
- Authority
- KR
- South Korea
- Prior art keywords
- valve
- tubular member
- leaflet
- prosthetic valve
- longitudinal axis
- Prior art date
Links
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Images
Classifications
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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
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
- A61F2/2412—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body with soft flexible valve members, e.g. tissue valves shaped like natural valves
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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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- A61F2/2412—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body with soft flexible valve members, e.g. tissue valves shaped like natural valves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- A61F2220/0075—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
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- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/0082—Additional features; Implant or prostheses properties not otherwise provided for specially designed for children, e.g. having means for adjusting to their growth
Landscapes
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- Biomedical Technology (AREA)
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- Transplantation (AREA)
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- General Health & Medical Sciences (AREA)
- Public Health (AREA)
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Abstract
Description
도 2a 및 도 2b는 본 명세서에 설명된 바와 같은 보철 판막의 외부 표면 상에 길이방향 시임(화살표)을 각각 도시하는 사진이다.
도 3은 본 명세서에 설명된 바와 같이 보철 판막의 외부 표면 상에서 관형 부재(화살표)의 제2 단부를 폐쇄하는 시임을 도시하는 사진이다.
도 4a는 본 명세서에 설명된 바와 같은 보철 판막의 단부도(즉, 제1 단부로부터)를 도시하고, 3개의 관형 부재의 레이아웃 및 이들이 이음매를 형성하는 방법을 도시하는 개략도이다.
도 4b는 본 명세서에 설명된 바와 같은 보철 판막의 단부도(즉, 제1 단부로부터)를 도시하고, 판막엽 및 이음매의 상단 표면을 도시하는 사진이다.
도 5는 본 명세서에 설명된 바와 같은 보철 판막의 단부도(즉, 제2 단부로부터)를 도시하고, 본 명세서에 설명된 바와 같은 보철 판막의 고리 내에서 관형 부재(화살표)의 제2 단부를 폐쇄하는 시임을 도시하는 사진이다.
도 6은 본 명세서에 설명된 바와 같은 신규한 3-튜브 판막을 도시한다. (a)3개의 생물학적으로 가공된 튜브와 분해성 봉합사로 제조된 3-판막엽 판막의 구성을 도시하는 개략도. (b)봉합된 판막의 외부도. 신규한 3-튜브 판막(c)과 기존의 튜브-인-튜브 판막(d)의 비교, 튜브는 명확성을 위해 컬러 코딩되어 있고 이음매는 어떻게 이음매 상의 확장기 힘이 튜브-인-튜브 판막(c)의 경우에 연결 봉합사에 의해 전체적으로 생기고 3-튜브 판막(d)의 경우에 주로 튜브 재료에 의해 생기는 지의 비교를 용이하게 하도록 원으로 표시되어 있다.
도 7은 인장 기계적 특성의 비교를 나타낸다. 생물학적으로 가공된 튜브 매트릭스를 자생 양 폐 판막 판막엽(native sheep pulmonary valve leaflet) 및 Contegra™ 판막 판막엽과 (a)두께, (b)극한 인장 강도(Ultimate Tensile Strength)(UTS), 및 (c)모듈러스(n = 9)면에서 비교하였다. (d)는 탈세포화된 가공된 튜브의 3색 이미지를 도시한다. 스케일 바아 = 200 um. 쌍을 이루는 심볼은 p < 0.05에서 상당한 차이를 나타낸다.
도 8은 (a)판막의 이미지가 마모 시험기에 장착된 상태에서 판막의 가속 마모 시험을 보여주는 사진이다. 이미지는 12M 사이클 후에 튜브-인-튜브 판막(b)의 이음매에 대한 손상을 보여주고 3-튜브 판막(c)에 대해서는 손상이 없다. 시험기에 3-튜브 판막을 장착하는 것을 용이하게 하는 데에 사용되는 Remnant Dacron™ 봉합 커프(sewing cuff)는 (c)가 이음매의 1.2 mm 위쪽에 위치되어 이음매에 대해 무시할만한 구조적 지지를 제공한다는 점에서 명백하다.
도 9는 판막 성능 측정을 위한 펄스 복제기 시스템을 도시한다. (a)폐쇄 위치 및 (b)개방 위치에 장착된 판막의 도면 단부. (c)폐 판막 유량 조건 하에 판막의 3 사이클 동안 압력 및 유량 트레이스. 확장기 단계 동안, 저장조로부터 기계 판막을 통해 펌프로 이동하는 유체의 과정은, 유동 프로파일에서 알 수 있는 바와 같이 밸브를 가로지르는 압력을 균등화하여 양의 유동을 유도하는 압력 펄스를 초래한다.
도 10은 19 mm 3-튜브 판막을 어린 양에 이식한 것을 보여주는 사진이다. 수술 부위(a), 및 장축 도면(b)과 단축 도면(c)에서 확장기 동안 심외막 심장 초음파 검사 이미지(epicardial echocardiographic image). 화살표는 "판막엽"을 나타낸다. (d)수축기에서 판막 동안 컬러 도플러는 큰 판막 오리피스를 나타내고, (e)확장기는 역류가 나타나지 않는다.
Claims (22)
- 보철 판막(prosthetic valve)이며,
제1 단부, 제2 단부, 외부 표면, 및 환형 영역을 포함하고 길이방향 축을 획정하는 본체로서, 길이방향 축과 정렬되는 적어도 2개의 관형 부재를 포함하는, 본체를 포함하고,
각각의 관형 부재는, 맞닿는 관형 부재의 외부 표면의 부분이 본체의 벽을 원주방향으로 형성하도록 길이방향 축을 따른 방향으로 맞닿는 외부 표면을 따라 인접한 관형 부재에 고정 부착되고,
각각의 관형 부재는 제2 단부에서 고정식으로 폐쇄되고, 각각의 관형 부재의 관강내 표면(luminal surface)은 판막엽(leaflet)의 상단 표면을 획정하며, 본체의 벽을 형성하지 않는 맞닿는 관형 부재의 제1 단부에서 외부 표면의 부분이 이음매를 획정하는, 보철 판막. - 제1항에 있어서, 각각의 판막엽은 이음매 영역 및 환형 영역을 포함하는, 보철 판막.
- 제1항에 있어서, 각각의 판막엽은 본체의 환형 영역과 일체형인, 보철 판막.
- 제2항에 있어서, 각각의 판막엽의 이음매 영역과 환형 영역은 연속적 및 일체형인, 보철 판막.
- 제1항에 있어서, 상기 본체의 각각의 판막엽 및 대응하는 환형 영역은 각각의 관형 부재에 의해 형성되는, 보철 판막.
- 보철 판막이며,
일단부에서 밀봉된 적어도 2개의 맞닿는 관형 부재를 포함하는 본체를 포함하고, 각각의 밀봉된 관형 부재는 판막엽을 형성하는, 보철 판막. - 보철 판막이며,
길이방향 축을 획정하는 본체를 포함하고, 상기 본체는 적어도 2개의 판막엽을 포함하며, 각각의 판막엽은 길이방향 축과 정렬된 관형 부재에 의해 형성되고,
상기 관형 부재는 제1 단부, 제2 단부, 외부 표면, 및 관강내 표면을 포함하며; 관형 부재의 제1 단부는 개방되고 관형 부재의 제2 단부는 폐쇄되어 관형 부재의 관강내 표면이 판막엽의 상단 표면을 형성하는, 보철 판막. - 제1항 내지 제7항 중 어느 한 항에 있어서, 상기 본체는, 맞닿는 관형 부재의 외부 표면의 부분이 본체의 벽을 원주방향으로 형성하도록 길이방향 축을 따른 방향으로 맞닿는 외부 표면을 따라 인접한 관형 부재에 고정 부착되고 길이방향 축과 정렬되는 2개의 관형 부재를 포함하는, 보철 판막.
- 제1항 내지 제7항 중 어느 한 항에 있어서, 상기 본체는, 맞닿는 관형 부재의 외부 표면의 부분이 본체의 벽을 원주방향으로 형성하도록 길이방향 축을 따른 방향으로 맞닿는 외부 표면을 따라 인접한 관형 부재에 고정 부착되고 길이방향 축과 정렬되는 3개의 관형 부재를 포함하는, 보철 판막.
- 제1항 내지 제7항 중 어느 한 항에 있어서, 판막은 2-판막엽 판막인, 보철 판막.
- 제1항 내지 제7항 중 어느 한 항에 있어서, 판막은 3-판막엽 판막인, 보철 판막.
- 제1항에 있어서, 보철 판막은 승모 판막(mitral valve), 대동맥 판막(aortic valve), 삼천판 판막(tricuspid valve), 폐 심장 판막(pulmonary heart valve), 및 정맥 판막(vein valve)으로 이루어진 그룹으로부터 선택되는, 보철 판막.
- 판막 기능 부전 또는 기능 상실의 치료를 위해 사용되는 제1항 내지 제7항 및 제12항 중 어느 한 항에 따른 보철 판막.
- 보철 판막의 제조 방법이며,
적어도 2개의 관형 부재를 제공하는 단계로서, 각각의 관형 부재는 제1 단부, 제2 단부, 외부 표면, 및 관강내 표면을 포함하고 길이방향 축을 획정하는, 단계;
길이방향 축을 따라 적어도 2개의 관형 부재를 정렬시키는 단계;
인접한 관형 부재를 맞닿는 외부 표면을 따라 길이방향 축을 따른 방향으로 부착하여 본체를 형성하는 단계로서, 본체는 제1 단부, 제2 단부, 외부 표면, 및 환형 영역을 포함하고, 길이방향 축을 획정하며, 맞닿는 관형 부재의 외부 표면의 부분은 본체의 벽을 원주방향으로 형성하는, 단계; 및
각각의 관형 부재의 관강내 표면이 판막엽의 상단 표면을 획정하도록 제2 단부에서 각각의 관형 부재를 폐쇄하는 단계를 포함하고, 본체의 벽을 형성하지 않는 맞닿는 관형 부재의 제1 단부에서 외부 표면의 부분이 이음매를 획정하는, 방법. - 제14항에 있어서, 관형 부재 중 적어도 하나는 자생 조직 관형 부재, 생물학적으로 가공된 관형 부재, 또는 합성 관형 부재인, 방법.
- 제14항에 있어서, 상기 본체는 적어도 하나의 자생 조직 관형 부재, 적어도 하나의 생물학적으로 가공된 관형 부재, 또는 적어도 하나의 합성 관형 부재를 포함하는, 방법.
- 제14항에 있어서, 상기 부착은 스티치, 스테이플, 접착제 또는 열 융합에 의한 것인, 방법.
- 제14항에 있어서, 상기 폐쇄는 스티치, 스테이플, 접착제 또는 열 융합에 의한 것인, 방법.
- 제14항 내지 제18항 중 어느 한 항에 있어서, 2개의 관형 부재를 포함하는, 방법.
- 제14항 내지 제18항 중 어느 한 항에 있어서, 3개의 관형 부재를 포함하는, 방법.
- 제14항 내지 제18항 중 어느 한 항에 있어서, 판막은 2-판막엽 판막인, 방법.
- 제14항 내지 제18항 중 어느 한 항에 있어서, 판막은 3-판막엽 판막인, 방법.
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FI3606467T3 (fi) | 2023-09-08 |
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AU2018249598A1 (en) | 2019-10-10 |
EP3606467A4 (en) | 2021-06-23 |
AU2018249598B9 (en) | 2023-07-27 |
EP3606467B1 (en) | 2023-06-14 |
WO2018187714A1 (en) | 2018-10-11 |
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