-
公开(公告)号：US5059269A
公开(公告)日：1991-10-22
申请号：US491020
申请日：1990-03-09
申请人： Can B. Hu , Donald D. Solomon , Stanley C. Wells
发明人： Can B. Hu , Donald D. Solomon , Stanley C. Wells
CPC分类号： C08G18/61 , A61L33/068
摘要： An article has a blood-contacting hemocompatible surface layer of a urethane-siloxane copolymer on a thermoplastic polymeric base material. The copolymer has siloxane segments prepared from hydroxyalkyl terminated polysiloxane glycols. The article is prepared by coextrusion of the base material and the copolymer.
摘要翻译： 制品在热塑性聚合物基材上具有聚氨酯 - 硅氧烷共聚物的与血液接触的血液相容性表面层。 该共聚物具有由羟烷基封端的聚硅氧烷二醇制备的硅氧烷链段。 该制品通过共挤出基材和共聚物制备。
-
公开(公告)号：US4939007A
公开(公告)日：1990-07-03
申请号：US164948
申请日：1988-03-07
申请人： Can B. Hu , Donald D. Solomon , Stanley C. Wells
发明人： Can B. Hu , Donald D. Solomon , Stanley C. Wells
CPC分类号： C08G18/61 , A61L33/068
摘要： An article has a blood-contacting hemocompatible surface layer of a urethane-siloxane copolymer on a thermoplastic polymeric base material. The copolymer has siloxane segments prepared from hydroxyalkyl terminated polysiloxane glycols. The article is prepared by coextrusion of the base material and the copolymer.
-
3.发明授权Method for rendering a substrate surface antithrombogenic and/or anti-infective 失效用于使底物表面抗血栓形成和/或抗感染的方法
公开(公告)号：US5328698A
公开(公告)日：1994-07-12
申请号：US563653
申请日：1990-08-06
CPC分类号： A61L33/0029 , A61L27/54 , A61L29/16 , A61L33/0047 , A61L2300/404 , A61L2300/42 , A61L2300/606
摘要： A shaped medical article of a polymeric substrate is extrusion coated with a composition which includes a bioactive agent dispersed in a matrix polymer. Preferred bioactive agents are temperature sensitive agents which undergo thermal decomposition at a temperature above the processing temperature of the matrix polymer. Preferred matrix polymers have a melting point of about 100.degree. C. or lower.
摘要翻译： 聚合物基材的成形医疗制品用包含分散在基质聚合物中的生物活性剂的组合物进行挤出包衣。 优选的生物活性剂是在高于基质聚合物的加工温度的温度下进行热分解的温度敏感剂。 优选的基质聚合物的熔点为约100℃或更低。
-
4.发明授权Lubricious coatings, medical articles containing same and method for their preparation 失效润滑涂料，含有其的医药制品及其制备方法
公开(公告)号：US5084315A
公开(公告)日：1992-01-28
申请号：US473506
申请日：1990-02-01
CPC分类号： A61L29/14 , A61L29/085 , A61L33/068 , A61L2400/10
摘要： An article which becomes lubricious when wet includes a base polymer and a coating composition thereon. The composition includes a lubricating polymer and a matrix polymer which adheres to the base polymer and serves as a carrier for the lubricating polymer. The composition may also include a homogenizing polymer to enhance the compatibility of the matrix and lubricating polymer. The invention includes a method to make the article of the invention by coextruding the base polymer and the coating composition.
-
公开(公告)号：US5038708A
公开(公告)日：1991-08-13
申请号：US468037
申请日：1990-01-22
IPC分类号： B05B13/06
CPC分类号： B05B13/0627 , Y10S118/10
摘要： Apparatus designed to coat the internal surfaces of tubular structures, and particularly for coating small diameter tubular structures having porous walls with a controlled coating material which may be a polymer, for example. The arrangement includes structure for rotating the tube to be coated simultaneously with structure for moving a coating applicator apparatus longitudinally through the tube for imparting an evenly dispersed coating throughout the longitudinally extent thereof. The arrangement is such that the apparatus may, selectively, impart a water or other solvent spray against, the already formed coating for extraction of a solvent from the coating. The coating characteristics (i.e., uniformity, thickness and pattern) are controlled by the use of a sintered metal and/or porous applicator, together with a controlled pressurized source of coating material.
摘要翻译： 设计用于涂覆管状结构的内表面的装置，特别是用于涂覆具有多孔壁的小直径管状结构，其具有例如可以是聚合物的可控涂层材料。 该装置包括用于同时旋转待涂覆的管的结构，用于使涂布器纵向移动通过管的结构，用于在其纵向范围内赋予均匀分散的涂层。 该装置使得该装置可以选择性地将水或其它溶剂喷雾抵靠已经形成的涂层，用于从涂层中提取溶剂。 通过使用烧结金属和/或多孔施加器以及受控加压的涂覆材料源来控制涂层特性（即，均匀性，厚度和图案）。
-
公开(公告)号：US4952359A
公开(公告)日：1990-08-28
申请号：US227040
申请日：1988-08-01
申请人： Stanley C. Wells
发明人： Stanley C. Wells
CPC分类号： B29C47/003 , A61M25/0009 , A61M25/0668 , B29C47/0023
摘要： A method is provided for making a splittable introducer catheter by co-extruding two different polymers of differing solubilities, so that v-shaped strips are formed on each side of the catheter wall which may be easily stripped from the main catheter tube. This leaves an introducer catheter which is easily split along the narrowed v-shaped grooves on diametrically opposite walls of the catheter.
摘要翻译： 提供了一种用于通过共挤出两种不同溶解度的不同聚合物来制造可分离的导引器导管的方法，使得在导管壁的每一侧上形成V形条，其可以容易地从主导管剥离。 这导致导管导管容易地沿导管的径向相对的壁上的变窄的V形槽分裂。
-
公开(公告)号：US4776846A
公开(公告)日：1988-10-11
申请号：US11783
申请日：1987-02-06
申请人： Stanley C. Wells
发明人： Stanley C. Wells
CPC分类号： B29C47/003 , A61M25/0009 , A61M25/0668 , B29C47/0023
摘要： Disclosed is an apparatus and method for preparing a catheter tube which has a longitudinal line of weakness extending axially there along as a place of preferential splitting. The method includes co-extruding two materials into the tubular cross-sectional shape, one of the materials forms a surface line along the other which extends radially to a level wherein the thickness of the tubing cross-section there at is less. When the co-extruded extra material is moved a groove is in the surface of the tube which groove permits easy tearing there along. The product formed by this method is also disclosed and includes the co-extruded polymers configured into a hollow tube of uniform radial cross-section and thickness before the co-extruded portion is removed.
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.029 秒)