Bioerodible polymeric semi-interpenetrating network alloys for internal fixation devices and bone cements
    2.
    发明授权
    Bioerodible polymeric semi-interpenetrating network alloys for internal fixation devices and bone cements 有权
    用于内固定装置和骨水泥的生物可降解聚合物半互穿网络合金

    公开(公告)号:US06486232B1

    公开(公告)日:2002-11-26

    申请号:US09663612

    申请日:2000-09-18

    IPC分类号: A61L2408

    摘要: A bioerodible polymeric material, and in particular a semi-interpenetrating network (“semi-IPN”) alloy, is disclosed. A beneficial end use of this material is in the form of internal fixation devices (IFDs) (such as bone supports, plates, and pins) and as cured bone cements for bone repair. A multi-part bioerodible cement system, which, upon mixing of the system parts, forms a cured bioerodible cement, includes, in one part, a first bioerodible polymer (e.g., PLGA) capable of producing acidic products upon hydrolytic degradation, and, in another part, a second bioerodible scaffolding polymer (e.g., PPF) which upon crosslinking provides a biopolymeric scaffolding or internal reinforcement for the cured cement. In another aspect, a bone cement system of the invention includes a bioerodible scaffolding polymer (such as PPF), which when polymerized provides a hardened bone cement, the cement system further including a gas generating agent in stabilized form for providing the cured bone cement with pores for facilitating inward cell migration.

    摘要翻译: 公开了一种生物可腐蚀的聚合物材料,特别是半互穿网络(“半IPN”)合金。 这种材料的有益的最终用途是内固定装置(IFD)(例如骨支撑件,板和销)以及用于骨修复的固化骨水泥的形式。 多部分生物可腐蚀水泥体系,其在系统部件混合后形成固化的生物可侵蚀水泥,其中一部分包括能够在水解降解时产生酸性产物的第一生物可腐蚀聚合物(例如PLGA) 另一部分,第二生物可蚀解脚手架聚合物(例如,PPF),其在交联时为固化的水泥提供生物聚合物脚手架或内部增强。 在另一方面,本发明的骨水泥系统包括生物可蚀解脚手架聚合物(例如PPF),当聚合时提供硬化的骨水泥,所述水泥系统还包括稳定形式的气体发生剂,用于提供固化的骨水泥, 用于促进内向细胞迁移的孔。

    Continuous-flow method for preparing microparticles
    3.
    发明申请
    Continuous-flow method for preparing microparticles 审中-公开
    用于制备微粒的连续流动方法

    公开(公告)号:US20050037086A1

    公开(公告)日:2005-02-17

    申请号:US10758970

    申请日:2004-01-16

    摘要: The invention is based on the discovery of a method for scalable, continuous flow production of a nucleic acid-containing microparticle that maintains the structural integrity of the associated nucleic acid and results in a microparticle having a purity suitable for introduction into an animal (e.g., human) host. Microparticles prepared according to the continuous flow processes described herein can be used for delivery of a nucleic acid for gene therapy, antisense therapy, vaccination, treatment of autoimmune disease, and either specific or non-specific modulation of an immune response (e.g., via cytokine regulation). The microparticles can additionally be used to deliver nucleic acid encoding a protein or peptide useful in any type of therapy.

    摘要翻译: 本发明基于发现用于可维持连续流生产含核酸微粒的方法,其维持相关核酸的结构完整性并产生具有适于引入动物的纯度的微粒(例如, 人)主持人。 根据本文所述的连续流程制备的微粒可用于递送用于基因治疗,反义治疗,疫苗接种,治疗自身免疫疾病的核酸,以及免疫应答的特异性或非特异性调节(例如通过细胞因子 规)。 微粒可另外用于递送编码可用于任何类型治疗的蛋白质或肽的核酸。