Method for forming expandable polymers having drugs or agents included therewith
    45.
    发明授权
    Method for forming expandable polymers having drugs or agents included therewith 失效
    形成含有药物或试剂的可发性聚合物的方法

    公开(公告)号:US06923927B2

    公开(公告)日:2005-08-02

    申请号:US10807709

    申请日:2004-03-23

    CPC分类号: A61F2/06

    摘要: The invention is directed to methods involving rewetting of expandable polymers with a wettable liquid to allow for enhanced expansion at or below room temperature without breakage, and in some cases, allows one to achieve a greater expansion ratio than that allowed at elevated temperatures using known methods. The wettable liquid can be formed of a drug and/or an agent, such that the resulting polymer contains and emits the drug upon positioning at a target location of a patient body. The expandable polymer can also have the drug or agent added to its structure at a polymer resin preparation stage, through use of an aqueous solution mixed with one or more fluoropolymers, or in a mixing stage. The present invention also allows one to achieve material with unique properties and handling characteristics. These properties included decreased material thickness, increased density, an altered node/fibril morphology, and a more consistent web in the case of flat material. This method is not limited to room temperature conditions and can be applied whenever the expandable polymer material is wet with a wettable liquid, and the expansion is performed at a temperature preferably below the vaporization or boiling points of that liquid.

    摘要翻译: 本发明涉及包括用可湿性液体再湿润可膨胀聚合物以允许在室温或低于室温下增强膨胀而不破裂的方法,并且在某些情况下允许使用已知方法获得比在升高的温度下更大的膨胀比 。 可湿性液体可以由药物和/或药剂形成,使得所得聚合物在定位在患者身体的目标位置时含有和释放药物。 可膨胀聚合物还可以通过使用与一种或多种含氟聚合物混合的水溶液,或在混合阶段中,在聚合物树脂制备阶段将药物或试剂加入到其结构中。 本发明还可以实现具有独特性质和处理特性的材料。 这些性质包括材料厚度减小,密度增加,节点/原纤维形态改变,以及在平坦材料情况下更一致的网。 该方法不限于室温条件,只要可膨胀聚合物材料用可湿性液体润湿,并且膨胀在优选低于该液体的蒸发或沸点的温度下进行。

    Application of a therapeutic substance to a tissue location using an expandable medical device
    50.
    发明授权
    Application of a therapeutic substance to a tissue location using an expandable medical device 有权
    使用可扩张医疗装置将治疗物质施用于组织位置

    公开(公告)号:US07947015B2

    公开(公告)日:2011-05-24

    申请号:US11804478

    申请日:2007-05-18

    IPC分类号: A61M37/00

    摘要: A non-polymeric or biological coating applied to radially expandable medical delivery device provides uniform drug distribution and permeation of the coating and any therapeutic agents mixed therewith into a targeted treatment area within the body. The delivery device is expanded using the pressure of an inflation fluid. After expanding the delivery device to a pre-determined size and shape, the inflation fluid weeps through the porous surface of the delivery device. The coating releases the delivery device and floats on the inflation fluid until bonding to the tissue due to its affinity for the tissue. Once the coating bonds or affixes to the tissue, through an absorption mechanism by the tissue cells of the coating material, the coating and any therapeutics contained therein are delivered to the tissue. The fluid can contain a therapeutic agent, or can be otherwise biocompatible and/or inert.

    摘要翻译: 应用于可径向扩张的医疗输送装置的非聚合物或生物涂层提供了涂层和与其混合的任何治疗剂的均匀的药物分布和渗透到体内的目标治疗区域。 输送装置使用充气流体的压力膨胀。 在将输送装置膨胀至预定尺寸和形状之后,充气流体通过输送装置的多孔表面而流失。 涂层释放输送装置并漂浮在充气流体上,直到由于其对组织的亲和力而结合到组织。 一旦涂层通过涂层材料的组织细胞通过吸收机制结合或固定到组织,涂层和其中包含的任何治疗剂被递送到组织。 流体可以含有治疗剂,或者可以以其他方式生物相容和/或惰性。