公开(公告)号：US20030055447A1

公开(公告)日：2003-03-20

申请号：US09957526

申请日：2001-09-19

申请人： Advanced Cardiovascular systems, Inc.

发明人： Jeong S. Lee ,  Edwin Wang ,  Roseminda J. White

IPC分类号： A61M029/00

CPC分类号： A61M25/0045 ,  A61L29/085 ,  A61M25/0009 ,  A61M25/104 ,  C08L77/12 ,  C08L75/04 ,  C08L79/08

摘要： A catheter having an multilayered shaft section with a first layer formed of a polyimide first material and a second layer formed of a second material. In a presently preferred embodiment, the polyimide material is a thermoset polyimide. However, in alternative embodiments, a thermoplastic polyimide is used. The thermoset polyimide has a very high glass transition temperature (Tg) of approximately 400null C. (as measured by differential scanning calorimetry), and excellent dimensional stability at the processing temperature of polyamides commonly used in catheter components. As a result, during formation and assembly of the catheter, production of a thin polyimide layer with controlled dimensions is facilitated. The polyimide has a high modulus and provides a thin walled yet highly pushable shaft section, while the second layer provides kink resistance. In one embodiment, the second material is selected from the group consisting of a polyamide material and a polyurethane material.

公开(公告)号：US20030055449A1

公开(公告)日：2003-03-20

申请号：US09957354

申请日：2001-09-19

申请人： Advanced Cardiovascular Systems, Inc.

发明人： Jeong S. Lee ,  Edwin Wang ,  Roseminda J. White ,  Jose A. Romero

IPC分类号： A61M029/00

CPC分类号： A61F2/95 ,  A61B2090/3954 ,  A61L29/106 ,  A61L29/126 ,  A61L29/18 ,  A61M25/10 ,  A61M25/1029 ,  A61M25/104 ,  A61M2025/1031 ,  A61M2025/1075 ,  A61M2025/1079

摘要： Medical devices or components thereof, and particularly intracorporeal devices for therapeutic or diagnostic uses, which are formed at least in part of a polymeric material and a ferromagnetic or paramagnetic material, so that the medical device or component thereof is visible on magnetic resonance imaging (MRI) scans. In one embodiment, the medical device is a balloon catheter having an MRI visible balloon. In a presently preferred embodiment, there is an insufficient amount of the ferromagnetic or paramagnetic material within a wall of the balloon or coated onto a wall of the balloon to make the balloon radiopaque.

摘要翻译： 医疗器械或其组件，特别是用于治疗或诊断用途的体内器件，其至少部分地由聚合物材料和铁磁性或顺磁性材料形成，使得医疗器械或其组件在磁共振成像（MRI） ）扫描。 在一个实施例中，医疗装置是具有MRI可见气囊的气囊导管。 在目前优选的实施方案中，在球囊的壁内存在不足量的铁磁性或顺磁性材料，或涂覆在气球的壁上，以使气球不透射线。