Dialysis Catheters with Fluoropolymer Additives
    1.
    发明申请
    Dialysis Catheters with Fluoropolymer Additives 审中-公开
    透析导管与含氟聚合物添加剂

    公开(公告)号:US20140276470A1

    公开(公告)日:2014-09-18

    申请号:US14220572

    申请日:2014-03-20

    IPC分类号: A61L29/06 A61M25/00

    摘要: A venous access catheter shaft and method of using and manufacturing such a catheter is provided. In one aspect of the invention, a catheter is provided comprising a base polymer having a Shore A durometer of 85A or lower, with 2.0% percent by weight of surface modifier, and a radiopaque filler comprising between 20-40 percentage by weight. In another aspect of the invention, a method reducing thrombus accumulation on a venous access catheter is provided wherein the catheter surface's resistance to thrombus formation is enhanced during indwell time by lowering the durometer rating of the base polymer of the catheter without increasing the amount of surface modifier additive. In another aspect of the invention, a method of manufacturing a catheter shaft is provided, wherein the shaft is formed comprising a base polymer having a Shore A durometer of 85A or lower, with 2.0% percent by weight of surface modifier, and a radiopaque filler comprising 30% by weight barium sulfate, and optionally a colorant of 0.2% weight.

    摘要翻译: 提供静脉通路导管轴以及使用和制造这种导管的方法。 在本发明的一个方面,提供一种导管,其包含具有85A或更低的肖氏A硬度计,2.0%重量百分比的表面改性剂的基础聚合物和包含20-40重量%的不透射线填料。 在本发明的另一方面,提供了减少静脉通路导管上的血栓积聚的方法,其中导管表面对血栓形成的抵抗力在静止时间期间通过降低导管的基础聚合物的硬度等级而增加,而不增加表面的量 改性剂添加剂。 在本发明的另一方面,提供了一种制造导管轴的方法,其中所述轴形成为包括具有85A或更低的肖氏A硬度计的基础聚合物,2.0重量%的表面改性剂和不透射线的填料 包含30重量%的硫酸钡和任选的0.2重量%的着色剂。

    DIALYSIS CATHETERS WITH FLUOROPOLYMER ADDITIVES
    2.
    发明申请
    DIALYSIS CATHETERS WITH FLUOROPOLYMER ADDITIVES 有权
    透析导管与荧光增白剂

    公开(公告)号:US20160228616A1

    公开(公告)日:2016-08-11

    申请号:US15132116

    申请日:2016-04-18

    摘要: A vascular access catheter is disclosed that has a catheter shaft with a distal end portion with a distal tip having a sloped face that is positioned at an acute angle from the distal tip relative to a longitudinal axis of the catheter shaft. A first, second, and third lumen extend longitudinally through the catheter shaft. The third lumen is configured for receiving a guidewire and may extend a partial length of the catheter or substantially the entire length of the catheter. The first lumen has an aperture located in the angled edge distal end portion of the catheter next to the distal tip and communicates with the first lumen. The second lumen has an aperture that is positioned in the outer surface of the catheter shaft that is in communication with the second lumen, and is spaced proximally from the first lumen aperture. The catheter includes a fluoropolymer additive with specific compositions and/or purity levels.

    摘要翻译: 公开了一种血管通路导管,其具有导管轴,该导管轴具有远端部分,远侧末端具有倾斜面,该倾斜面相对于导管轴的纵向轴线与远侧末端成锐角。 第一,第二和第三腔纵向延伸穿过导管轴。 第三腔构造成用于接收导丝,并且可延伸导管的部分长度或导管的整个长度。 第一管腔具有位于导管的邻近远侧末端的成角度的边缘远端部分中的孔,并且与第一管腔连通。 第二管腔具有定位在导管轴的与第二内腔连通的外表面中并且与第一管腔开口向近侧间隔开的孔。 导管包括具有特定组成和/或纯度水平的氟聚合物添加剂。

    Method of manufacture of porous inorganic structures
    9.
    发明授权
    Method of manufacture of porous inorganic structures 有权
    多孔无机结构的制造方法

    公开(公告)号:US07494614B2

    公开(公告)日:2009-02-24

    申请号:US10617358

    申请日:2003-07-11

    IPC分类号: B29C65/00

    摘要: A sintering schedule to allow the reliable formation of inorganic or ceramic materials, exemplified using porous calcium polyphosphate samples to be used for forming novel implants for bone interfacing applications. The key to the successful definition of the process was the determination of the factors affecting the crystallization temperature of the powders that are gravity sintered to form porous samples of desired density and with a pore size range suitable for the particular application. The method involves applying a sintering procedure to a packed amorphous inorganic powder which gives control over densification and includes choosing sintering temperatures and times sequentially that correspond to the inorganic material being amorphous but having a viscosity to develop significant sinter necks between adjacent powder particles by a viscous flow sintering mechanism while maintaining a desired open-pored structure, followed by a second temperature at which crystallization of the packed amorphous inorganic powder occurs and during which slower diffusion-related mechanisms control sinter neck growth and densification to give a substantially crystalline porous, inorganic structure. In addition, interpenetrating phase composites of biodegradable organic polymers throughout the porous calcium polyphosphate samples were formed and resulted in the development of novel composites with attractive strength and toughness. These materials hold promise for formation of biodegradable fracture fixation implants and degradable anchoring systems for temporary stabilization of bone-interfacing implants designed for fixation by bone ingrowth.

    摘要翻译: 烧结程序,以允许可靠地形成无机或陶瓷材料,例如使用多孔多磷酸钙样品用于形成用于骨接合应用的新型植入物。 成功确定该方法的关键是确定影响重结晶粉末的结晶温度的因素,以形成所需密度的多孔样品,并具有适合于特定用途的孔径范围。 该方法包括对填充的无定形无机粉末施加烧结程序,其对致密化进行控制,并且包括选择对应于无定形材料的无机材料的烧结温度和时间,但是具有粘性,以通过粘稠度在相邻粉末颗粒之间形成显着的烧结颈部 流动烧结机制,同时保持所需的开孔结构,随后是第二温度,在该第二温度下,发生包装的无定形无机粉末的结晶,并且其中较慢的扩散相关机制控制烧结颈部生长和致密化,得到基本上结晶的多孔,无机结构 。 此外,形成了生物可降解有机聚合物在整个多孔多磷酸钙样品中的互穿相复合材料,并且导致具有诱人的强度和韧性的新型复合材料的开发。 这些材料有望形成可生物降解的骨折固定植入物和可降解的锚定系统,用于临时稳定设计用于骨内向固定的骨界面植入物。

    Polymeric coupling agents and pharmaceutically-active polymers made therefrom
    10.
    发明授权
    Polymeric coupling agents and pharmaceutically-active polymers made therefrom 有权
    聚合偶联剂和由其制备的药物活性聚合物

    公开(公告)号:US08349309B2

    公开(公告)日:2013-01-08

    申请号:US12793475

    申请日:2010-06-03

    IPC分类号: A61K31/00

    摘要: A pharmaceutically-active polymeric compound of the general formula (I), Y-[Yn-LINK B-X]m-LINK B  (I) wherein (i) X is a coupled biological coupling agent of the general formula (II) Bio-LINK A-Bio  (II) wherein Bio is a biologically active agent fragment or precursor thereof linked to LINK A through a hydrolysable covalent bond; and LINK A is a coupled central flexible linear first segment of

    摘要翻译: 通式(I)Y- [Yn-LINK BX] m-LINK B(I)的药物活性聚合物,其中(i)X为通式(II)的偶联生物偶联剂,Bio-LINK A-Bio(II)其中Bio是通过可水解共价键与LINK A连接的生物活性剂片段或其前体; 并且LINK A是连接到每个所述Bio片段的<2000理论分子量的偶联中心柔性线性第一片段; (ii)Y是LINK B-OLIGO; 其中(a)LINK B是将一个OLIGO与另一个OLIGO和OLIGO与X或其前体连接的耦合的第二片段; 和(b)OLIGO是分子量小于5,000且包含少于100个单体重复单元的短长度的聚合物链段; (iii)m为1-40; 和(iv)n选自2-50。 该化合物可用作生物材料,特别是在体内提供抗菌活性。 还提供了可用作制备药物活性聚合物的中间体的生物偶联剂。