KR20140057357A - 생분해성 탄성 호일과 치료제로 피복된 클래드 방사선 불투과성 섬유로 이루어진 자체-팽창형 생분해성 스텐트 및 이들의 제조 방법 - Google Patents
생분해성 탄성 호일과 치료제로 피복된 클래드 방사선 불투과성 섬유로 이루어진 자체-팽창형 생분해성 스텐트 및 이들의 제조 방법 Download PDFInfo
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- KR20140057357A KR20140057357A KR1020147007892A KR20147007892A KR20140057357A KR 20140057357 A KR20140057357 A KR 20140057357A KR 1020147007892 A KR1020147007892 A KR 1020147007892A KR 20147007892 A KR20147007892 A KR 20147007892A KR 20140057357 A KR20140057357 A KR 20140057357A
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Abstract
- 상기 중합체 코어 섬유에 균일하게 분산된 엑스선 불투과성 물질을 제공받거나, 또는
- 중합체 코어 섬유가 엑스선 불투과성 물질이 균일하게 분산된 중합체로 코팅되며,
- 스텐트의 완전한 기본 구조를 형성하는 꼬여 있는 섬유들은 또한 엑스선 불투과성 필러의 분산물 및 중합체로 코팅되고, 상기 코팅은 스텐트의 기본 구조 상에 제공된 생분해성 호일을 형성하여 활성 물질을 캡슐화하고, 상기 활성 물질은 의약, 단백질, 효소, 유전자, 줄기세포 또는 종양의 국소 치료에 사용되는 방사선 활성 물질을 포함하는 물질의 군으로부터 선택된다.
자체-팽창형 생분해성 스텐트의 제조 방법으로서, 상기 방법은 엑스선 불투과성 필러를 함유하는 코어 중합체 섬유를 추가의 중합체로 피복하는 단계, 또는
- 중합체 코어 섬유에 엑스선 불투과성 물질이 균일하게 분산되는 단계, 또는
- 중합체 코어 섬유를 엑스선 불투과성 물질이 균일하게 분산된 중합체로 코팅하는 단계,
- 이어서 스텐트의 기본 구조에 생분해성 호일을 제공하기 위하여 엑스선 불투과성 필러의 분산물 및 중합체로 스텐트의 완전한 기본 구조를 형성하는 꼬여 있는 섬유들을 코팅하며, 호일 안에 활성 물질이 캡슐화되고, 이 단계에서 엑스선 불투과성 필러가 제공된 스텐트가 열 처리를 거치며, 이어서 제1 의약을 함유하는 엑스선 불투과성 섬유로 이루어진 생분해성 탄성 호일로 코팅되고, 이 방식으로 제조된 후, 스텐트는 두 번째의 열 처리를 거치고, 상이한 제2 의약을 함유하는 추가의 더 얇은 생분해성 호일로 다시 코팅하는 단계를 포함한다.
Description
도 1은 본 발명에 따른 스텐트를 도시한다.
도 2는 분리된 블랭크 부분과 코팅된 부분을 가진 스텐트를 상세히 도시한다.
Claims (5)
- 꼬여 있는 생분해성 섬유들로 구성된 베이스 구조를 포함하는 자체-팽창형 생분해성 스텐트로, 엑스선 불투과성 필러를 함유하는 코어 중합체 섬유가 추가의 중합체로 피복되거나, 또는
- 상기 중합체 코어 섬유에 엑스선 불투과성 물질이 균일하게 분산되거나, 또는
- 중합체 코어 섬유가 엑스선 불투과성 물질이 균일하게 분산된 중합체로 코팅되며,
- 스텐트의 완전한 기본 구조를 형성하는 꼬여 있는 섬유들은 또한 엑스선 불투과성 필러의 분산물 및 중합체로 코팅되고, 상기 코팅은 스텐트의 기본 구조 상에 제공된 생분해성 호일을 형성하며, 호일 안에 활성 물질이 캡슐화되고, 상기 활성 물질은 의약, 단백질, 효소, 유전자, 줄기세포 또는 종양의 국소 치료에 사용되는 방사선 활성 물질을 포함하는 물질의 군으로부터 선택되는 것을 특징으로 하는 자체-팽창형 생분해성 스텐트.
- 꼬여 있는 생분해성 섬유들로 구성된 베이스 구조를 가진 자체-팽창형 생분해성 스텐트의 제조 방법으로서, 상기 방법은 엑스선 불투과성 필러를 함유하는 코어 중합체 섬유를 추가의 중합체로 피복하는 단계, 또는
- 중합체 코어 섬유에 엑스선 불투과성 물질이 균일하게 분산되는 단계, 또는
- 중합체 코어 섬유를 엑스선 불투과성 물질이 균일하게 분산된 중합체로 코팅하는 단계,
- 이어서 스텐트의 기본 구조에 생분해성 호일을 제공하기 위하여 엑스선 불투과성 필러의 분산물 및 중합체로 스텐트의 완전한 기본 구조를 형성하는 꼬여 있는 섬유들을 코팅하며, 호일 내부에는 활성 물질이 캡슐화 되어 있고, 이 단계에서 엑스선 불투과성 필러를 제공 받은 스텐트가 열 처리를 거치며, 이어서 제1 의약을 함유하는 엑스선 불투과성 섬유로 이루어진 생분해성 탄성 호일로 코팅되고, 이 방식으로 제조된 후, 스텐트는 두 번째의 열 처리를 거치고, 상이한 제2 의약을 함유하는 추가의 더 얇은 생분해성 호일로 다시 코팅하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 2 항에 있어서, 상기 스텐트가 여러 종류의 분해가능한 중합체를 포함하는 섬유로부터 제조되는 것을 특징으로 하는 자체-팽창형 생분해성 스텐트의 제조 방법.
- 제 2 항에 있어서, 상기 스텐트는 스텐트의 존재에 대한 조직 반응의 제어를 유지케 하는 것을 가능하게 하는 캡슐화된 의약을 함유하는 중합체 물질로 코팅되는 것을 특징으로 하는 자체-팽창형 생분해성 스텐트의 제조 방법.
- 제 2 항 내지 제 4 항 중 어느 한 항에 있어서, 상기 스텐트가 코팅 심축에 배치되고,
- 저장소의 병이 중합체 용액으로 채워지고,
- 중합체의 분리된 양이 도포할 코팅의 바람직한 두께에 따라서 계량 장치에 의해서 선택되고,
- 이후 용액이 좁은 구멍을 통해서, 바람직하게 정해진 속도로 수평 방향으로 움직이는 바늘에 의해서 스텐트 위에 놓여지고,
- 스텐트가 연속 방식으로 또는 불연속 방식으로 호일로 코팅될 수 있고,
- 심축 상에 형성되어 상기 용액으로 코팅된 후, 상기 스텐트는 노 안에 배치되며, 여기서 중합체가 건조되고, Tm - 10℃의 온도에서 스텐트의 표면에 막이 형성되고,
- 호일이 다음의 형상 중 하나를 취할 수 있는데, 그것은 스텐트의 전체 표면을 피복할 수 있거나, 스텐트의 근위부와 원위부는 블랭크로 남기고 스텐트의 중간 부분을 피복할 수 있거나, 또는 상이한 두께 및 길이를 가진 가변적인 수의 횡단방향 또는 길이방향 스트립을 형성할 수 있는 것을 특징으로 하는 자체-팽창형 생분해성 스텐트의 제조 방법.
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Application Number | Priority Date | Filing Date | Title |
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PCT/CZ2011/000079 WO2013029571A1 (en) | 2011-08-26 | 2011-08-26 | Self-expandable biodegradable stent made of clad radiopaque fibers covered with biodegradable elastic foil and therapeutic agent and method of preparation thereof |
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KR20210070230A (ko) * | 2019-12-04 | 2021-06-14 | 주식회사 엠아이텍 | 방사선 불투과성 기능을 포함하는 생분해성 이중구조체 |
KR20210074236A (ko) * | 2019-12-11 | 2021-06-21 | 주식회사 엠아이텍 | 방사선 불투과성 물질이 포함된 생분해성 튜브 |
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- 2011-08-26 EP EP11785279.8A patent/EP2747800A1/en not_active Withdrawn
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KR20210074236A (ko) * | 2019-12-11 | 2021-06-21 | 주식회사 엠아이텍 | 방사선 불투과성 물질이 포함된 생분해성 튜브 |
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