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公开(公告)号：US11939435B2
公开(公告)日：2024-03-26
申请号：US17329346
申请日：2021-05-25
摘要： The present disclosure provides poly(tetrafluoroethylene) (PTFE) microparticles with a Dv50 of about 20 μm to about 30 mm and a specific surface area (SSA) of at least about 3.0 m2/g when measured by a multipoint BET method of ISO 9277. Such PTFE microparticles can be obtained via a method including thermomechanically degrading scrap PTFE in the presence of air and/or oxygen and reducing the particle size of the resultant degraded PTFE.
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2.发明申请公开(公告)号：US20160289874A1
公开(公告)日：2016-10-06
申请号：US15069988
申请日：2016-03-15
IPC分类号： D04H1/728 , D01D5/00 , D01F6/12 , B32B27/32 , B32B5/02 , B32B5/26 , B32B27/08 , A61F2/07 , B32B1/08
CPC分类号： A61F2/07 , A61F2/04 , A61F2/06 , A61F2/92 , A61F2002/072 , A61F2210/0076 , A61F2240/001 , A61F2250/0067 , A61L27/26 , A61L27/507 , A61L31/041 , A61L31/048 , A61L31/06 , A61L31/129 , A61L31/146 , A61L2400/12 , A61L2400/18 , B01D39/1623 , B01D2239/025 , B01D2239/0631 , B32B1/08 , B32B5/022 , B32B5/18 , B32B5/26 , B32B7/04 , B32B27/08 , B32B27/322 , B32B2250/03 , B32B2250/20 , B32B2250/242 , B32B2262/0253 , B32B2266/025 , B32B2535/00 , B82Y5/00 , D01D5/003 , D01D5/0038 , D01D5/0076 , D01D5/0084 , D01D5/06 , D01F6/12 , D04H1/492 , D04H1/54 , D04H1/728 , D10B2321/042 , D10B2509/06 , F16L11/12 , Y10T428/31544 , Y10T442/66 , Y10T442/677 , C08L71/02 , C08L27/18
摘要： In accordance with certain embodiments of the present disclosure, a process of forming a prosthetic device is provided. The process includes forming a dispersion of polymeric nanofibers, a fiberizing polymer, and a solvent, the dispersion having a viscosity of at least about 50,000 cPs. A tubular frame is positioned over a tubular polymeric structure. Nanofibers from the dispersion are electrospun onto the tubular frame to form a prosthetic device. The prosthetic device is heated.
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3.发明申请公开(公告)号：US20160030154A1
公开(公告)日：2016-02-04
申请号：US14858619
申请日：2015-09-18
CPC分类号： A61F2/07 , A61F2/04 , A61F2/06 , A61F2/92 , A61F2002/072 , A61F2210/0076 , A61F2240/001 , A61F2250/0067 , A61L27/26 , A61L27/507 , A61L31/041 , A61L31/048 , A61L31/06 , A61L31/129 , A61L31/146 , A61L2400/12 , A61L2400/18 , B01D39/1623 , B01D2239/025 , B01D2239/0631 , B32B1/08 , B32B5/022 , B32B5/18 , B32B5/26 , B32B7/04 , B32B27/08 , B32B27/322 , B32B2250/03 , B32B2250/20 , B32B2250/242 , B32B2262/0253 , B32B2266/025 , B32B2535/00 , B82Y5/00 , D01D5/003 , D01D5/0038 , D01D5/0076 , D01D5/0084 , D01D5/06 , D01F6/12 , D04H1/492 , D04H1/54 , D04H1/728 , D10B2321/042 , D10B2509/06 , F16L11/12 , Y10T428/31544 , Y10T442/66 , Y10T442/677 , C08L71/02 , C08L27/18
摘要： In accordance with certain embodiments of the present disclosure, a process of forming a prosthetic device is provided. The process includes forming a dispersion of polymeric nanofibers, a fiberizing polymer, and a solvent, the dispersion having a viscosity of at least about 50,000 cPs. A tubular frame is positioned over a tubular polymeric structure. Nanofibers from the dispersion are electrospun onto the tubular frame to form a prosthetic device. The prosthetic device is heated.
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公开(公告)号：US20140205781A1
公开(公告)日：2014-07-24
申请号：US13827886
申请日：2013-03-14
IPC分类号： C08J9/42
CPC分类号： C08J9/42 , C08J2327/18 , C08J2483/04 , F16J15/348 , Y10T428/1376 , Y10T428/24802 , Y10T428/249958
摘要： The present disclosure provides a composite material comprising a silicone component and an electrospun, porous polymeric component and methods of producing such a composite material. The layers are preferably processed so as to result in some degree of penetration of the silicone component into the pores of the electrospun polymeric component. The composite materials can be tailored for use in a range of different applications.
摘要翻译： 本公开提供了一种复合材料，其包括硅氧烷组分和电纺丝多孔聚合物组分以及生产这种复合材料的方法。 这些层优选地被加工成导致硅氧烷组分在电纺聚合物组分的孔中的一定程度的渗透。 复合材料可以定制用于一系列不同的应用。
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公开(公告)号：US20210371602A1
公开(公告)日：2021-12-02
申请号：US17329346
申请日：2021-05-25
摘要： The present disclosure provides poly(tetrafluoroethylene) (PTFE) microparticles with a Dv50 of about 20 μm to about 30 mm and a specific surface area (SSA) of at least about 3.0 m2/g when measured by a multipoint BET method of ISO 9277. Such PTFE microparticles can be obtained via a method including thermomechanically degrading scrap PTFE in the presence of air and/or oxygen and reducing the particle size of the resultant degraded PTFE.
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公开(公告)号：US09856588B2
公开(公告)日：2018-01-02
申请号：US14636274
申请日：2015-03-03
IPC分类号： C08J3/05 , C08L27/18 , D04H1/728 , D01D5/00 , D01D10/02 , D01F6/12 , D01F6/48 , D04H1/42 , D04H1/4326 , D04H3/02 , B05D1/00 , B32B1/08 , B32B5/02 , B32B9/00 , B32B15/085 , B32B27/08 , D04H1/4318 , C08J3/00 , B29B13/02 , C08J9/232 , D06N7/00 , B29B11/06 , B29C55/04 , D04H1/4382 , D04H1/54 , D04H1/74 , C08F114/26 , D04H1/413 , B29K27/18 , B29L31/00 , B29K105/00
CPC分类号： D04H1/728 , B05D1/007 , B29B11/06 , B29B13/023 , B29C55/04 , B29K2027/18 , B29K2105/0094 , B29K2995/0063 , B29K2995/0077 , B29L2031/755 , B32B1/08 , B32B5/022 , B32B9/005 , B32B15/085 , B32B27/08 , C08F114/26 , C08J3/005 , C08J3/05 , C08J9/232 , C08J2327/18 , C08J2471/02 , D01D5/0007 , D01D5/003 , D01D5/0038 , D01D10/02 , D01F6/12 , D01F6/48 , D04H1/413 , D04H1/42 , D04H1/4318 , D04H1/4326 , D04H1/4382 , D04H1/54 , D04H1/74 , D04H3/02 , D06N7/00 , D10B2321/042 , Y10T428/1314 , Y10T428/1355 , Y10T428/1362 , Y10T442/60 , Y10T442/656 , Y10T442/674 , Y10T442/681
摘要： An improved process for forming a PTFE mat is described. The process includes providing a dispersion with PTFE, a fiberizing polymer and a solvent wherein said dispersion has a viscosity of at least 50,000 cP. An apparatus is provided which comprises a charge source and a target a distance from the charge source. A voltage source is provided which creates a first charge at the charge source and an opposing charge at the target. The dispersion is electrostatically charged by contact with the charge source. The electrostatically charged dispersion is collected on the target to form a mat precursor which is heated to remove the solvent and the fiberizing polymer thereby forming the PTFE mat.
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公开(公告)号：US20170096755A1
公开(公告)日：2017-04-06
申请号：US15209808
申请日：2016-07-14
IPC分类号： D04H1/728 , D01D10/02 , D04H1/413 , D04H1/42 , C08J3/00 , D04H1/4326 , D04H1/4382 , D04H1/54 , D04H1/74 , D04H3/02 , D01D5/00 , D04H1/4318
CPC分类号： D04H1/728 , B05D1/007 , B29B11/06 , B29B13/023 , B29C55/04 , B29K2027/18 , B29K2105/0094 , B29K2995/0063 , B29K2995/0077 , B29L2031/755 , B32B1/08 , B32B5/022 , B32B9/005 , B32B15/085 , B32B27/08 , C08F114/26 , C08J3/005 , C08J3/05 , C08J9/232 , C08J2327/18 , C08J2471/02 , D01D5/0007 , D01D5/003 , D01D5/0038 , D01D10/02 , D01F6/12 , D01F6/48 , D04H1/413 , D04H1/42 , D04H1/4318 , D04H1/4326 , D04H1/4382 , D04H1/54 , D04H1/74 , D04H3/02 , D06N7/00 , D10B2321/042 , Y10T428/1314 , Y10T428/1355 , Y10T428/1362 , Y10T442/60 , Y10T442/656 , Y10T442/674 , Y10T442/681
摘要： An improved process for forming a PTFE mat is described. The process includes providing a dispersion with PTFE, a fiberizing polymer and a solvent wherein said dispersion has a viscosity of at least 50,000 cP. An apparatus is provided which comprises a charge source and a target a distance from the charge source. A voltage source is provided which creates a first charge at the charge source and an opposing charge at the target. The dispersion is electrostatically charged by contact with the charge source. The electrostatically charged dispersion is collected on the target to form a mat precursor which is heated to remove the solvent and the fiberizing polymer thereby forming the PTFE mat.
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8.发明申请公开(公告)号：US20160331512A1
公开(公告)日：2016-11-17
申请号：US15069989
申请日：2016-03-15
IPC分类号： A61F2/07 , A61L27/26 , A61L27/50 , B32B27/32 , A61L31/14 , B32B5/18 , B32B7/04 , B32B27/08 , D01D5/00 , A61L31/04
CPC分类号： A61F2/07 , A61F2/04 , A61F2/06 , A61F2/92 , A61F2002/072 , A61F2210/0076 , A61F2240/001 , A61F2250/0067 , A61L27/26 , A61L27/507 , A61L31/041 , A61L31/048 , A61L31/06 , A61L31/129 , A61L31/146 , A61L2400/12 , A61L2400/18 , B01D39/1623 , B01D2239/025 , B01D2239/0631 , B32B1/08 , B32B5/022 , B32B5/18 , B32B5/26 , B32B7/04 , B32B27/08 , B32B27/322 , B32B2250/03 , B32B2250/20 , B32B2250/242 , B32B2262/0253 , B32B2266/025 , B32B2535/00 , B82Y5/00 , D01D5/003 , D01D5/0038 , D01D5/0076 , D01D5/0084 , D01D5/06 , D01F6/12 , D04H1/492 , D04H1/54 , D04H1/728 , D10B2321/042 , D10B2509/06 , F16L11/12 , Y10T428/31544 , Y10T442/66 , Y10T442/677 , C08L71/02 , C08L27/18
摘要： In accordance with certain embodiments of the present disclosure, a process of forming a prosthetic device is provided. The process includes forming a dispersion of polymeric nanofibers, a fiberizing polymer, and a solvent, the dispersion having a viscosity of at least about 50,000 cPs. A tubular frame is positioned over a tubular polymeric structure. Nanofibers from the dispersion are electrospun onto the tubular frame to form a prosthetic device. The prosthetic device is heated.
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9.发明申请公开(公告)号：US20160296351A1
公开(公告)日：2016-10-13
申请号：US14967597
申请日：2015-12-14
发明人： Robert L. Ballard , Bruce L. Anneaux , Sabrina D. Puckett , Joshua L. Manasco , David P. Garner
IPC分类号： A61F2/82 , A61L31/14 , D01F6/12 , D04H3/02 , D04H1/42 , D04H1/4326 , D04H1/728 , A61L31/10 , A61F2/07
CPC分类号： A61F2/82 , A61F2/07 , A61F2002/075 , A61F2210/0071 , A61F2240/00 , A61L31/041 , A61L31/10 , A61L31/146 , D01D5/0038 , D01D5/0084 , D01D10/02 , D01F6/12 , D01F6/48 , D04H1/42 , D04H1/4326 , D04H1/728 , D04H3/02
摘要： A stent or other prosthesis may be formed by encapsulating a scaffold or frame with a polymer coating. The polymer coating may consist of layers of electrospun polytetrafluoroethylne (PTFE). Electrospun PTFE of certain porosities may permit endothelial cell growth within the prosthesis. The stent may be applicable to stents designed for the central venous system, peripheral vascular stents, abdominal aortic aneurism stents, bronchial stents, esophageal stents, biliary stents, or any other stent.
摘要翻译： 可以通过用聚合物涂层包封支架或框架来形成支架或其他假体。 聚合物涂层可以由电纺聚四氟乙烯（PTFE）层组成。 某些孔隙度的电纺丝PTFE可能允许假体内皮细胞生长。 支架可适用于为中心静脉系统，外周血管支架，腹主动脉瘤支架，支气管支架，食管支架，胆管支架或任何其他支架设计的支架。
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公开(公告)号：US20150182668A1
公开(公告)日：2015-07-02
申请号：US14631909
申请日：2015-02-26
发明人： Robert L. Ballard , Bruce L. Anneaux , Sabrina D. Puckett , Joshua L. Manasco , David P. Garner
CPC分类号： A61F2/82 , A61F2/07 , A61F2002/075 , A61F2210/0071 , A61F2240/00 , A61L31/041 , A61L31/10 , A61L31/146 , D01D5/0038 , D01D5/0084 , D01D10/02 , D01F6/12 , D01F6/48 , D04H1/42 , D04H1/4326 , D04H1/728 , D04H3/02
摘要： A stent or other prosthesis may be formed by encapsulating a scaffold or frame with a polymer coating. The polymer coating may consist of layers of electrospun polytetrafluoroethylne (PTFE). Electrospun PTFE of certain porosities may permit endothelial cell growth within the prosthesis. The stent may be applicable to stents designed for the central venous system, peripheral vascular stents, abdominal aortic aneurism stents, bronchial stents, esophageal stents, biliary stents, or any other stent.
摘要翻译： 可以通过用聚合物涂层包封支架或框架来形成支架或其他假体。 聚合物涂层可以由电纺聚四氟乙烯（PTFE）层组成。 某些孔隙度的电纺丝PTFE可能允许假体内皮细胞生长。 支架可适用于为中心静脉系统，外周血管支架，腹主动脉瘤支架，支气管支架，食管支架，胆管支架或任何其他支架设计的支架。
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