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    • 4. 发明申请
    • POROUS POLYMERIC ARTICLES
    • 多孔聚合物
    • WO2008005035A1
    • 2008-01-10
    • PCT/US2006/035610
    • 2006-09-12
    • AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCHYING, Jackie, Y.CHOW, Edwin Pei YongLOH, Jeremy Ming HokSCHUMACHER, Karl
    • YING, Jackie, Y.CHOW, Edwin Pei YongLOH, Jeremy Ming HokSCHUMACHER, Karl
    • C08J9/00A61P27/00
    • A61L27/56B33Y80/00
    • Porous polymeric articles, and more specifically, porous polymeric articles for tissue engineering and organ replacement, are described. In some embodiments, methods described herein include use of a polymer-solvent system (e.g., phase inversion) to generate porosity in a structure. The process may include formation of a structure precursor material including a first crosslinkable component and a second component that can be precipitated in a precipitation medium. The structure precursor material may be shaped into a three-dimensional shape by a suitable technique such as three- dimensional printing. Upon shaping of the structure precursor material, at least a portion of the first component may be crosslinked. The structure may then be contacted with a precipitation medium to remove the precursor solvent from the structure, which can cause the second polymer component to precipitate and form a porous structure containing a network of uniform pores. In some embodiments, the porous structure is constructed and arranged for use as a template for ultrafiltration, cell growth, and/or for forming complex, biomimetic, porous biohybrid organs, where living cells can be immobilized and perform their normal physiological functions.
    • 描述了多孔聚合物制品,更具体地说,用于组织工程和器官置换的多孔聚合物制品。 在一些实施方案中,本文所述的方法包括使用聚合物 - 溶剂体系(例如相转化)以在结构中产生孔隙。 该方法可以包括形成包含可在沉淀介质中沉淀的第一可交联组分和第二组分的结构前体材料。 结构前体材料可以通过诸如三维印刷的合适技术成形为三维形状。 在结构前体材料成型时,第一组分的至少一部分可以是交联的。 然后可以将结构与沉淀介质接触以从结构中除去前体溶剂,这可使第二聚合物组分沉淀并形成含有均匀孔网络的多孔结构。 在一些实施方案中,多孔结构被构造和布置用作超滤,细胞生长和/或形成复合物,仿生性,多孔生物杂交器官的模板,其中活细胞可以被固定并执行其正常的生理功能。
    • 5. 发明申请
    • THREE-DIMENSIONAL FABRICATION OF BIOCOMPATIBLE STRUCTURES IN ANATOMICAL SHAPES AND DIMENSIONS FOR TISSUE ENGINEERING AND ORGAN REPLACEMENT
    • 用于组织工程和组织替代的解剖形状和尺寸的生物化学结构的三维制造
    • WO2007106497A2
    • 2007-09-20
    • PCT/US2007/006346
    • 2007-03-13
    • AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCHYING, Jackie, Y.KAN, Shyi-herngLOH, Jeremy Ming HockSCHUMACHER, KarlHSIEH, James, Tseng-ming
    • YING, Jackie, Y.KAN, Shyi-herngLOH, Jeremy Ming HockSCHUMACHER, KarlHSIEH, James, Tseng-ming
    • A61L27/38A61L27/56C12N5/00
    • A61L27/38A61L27/56B33Y80/00C12N5/0068C12N2533/30
    • The present invention relates to methods and apparatuses involving biocompatible structures for tissue engineering and organ replacement and, more specifically, to methods and apparatuses involving biocompatible structures formed by three-dimensional fabrication for tissue engineering and organ replacement. In some embodiments, the biocompatible structures are scaffolds for cells that can be used as tissue engineering templates and/or as artificial organs. The structures may be three- dimensional and can mimic the shapes and dimensions of tissues and/or organs, including the microarchitecture and porosities of the tissues and organs. In some cases, a structure formed by three-dimensional fabrication comprises a wall defining a cavity and a plurality of pores in at least a portion of the wall. The pores may permeate the wall and enable exchange of a component (e.g., a molecule and/or a cell) between a portion interior to the cavity and a portion exterior to the cavity. For instance, pores may allow delivery of molecules, cell migration, and/or generation of connective tissue between the structure and its host environment. Structures of the invention can be implanted into a mammal, or alternatively and/or additionally, can be used ex vivo as bioartificial assist devices.
    • 本发明涉及包括用于组织工程和器官置换的生物相容结构的方法和装置,更具体地涉及涉及通过用于组织工程和器官置换的三维制造形成的生物相容性结构的方法和装置。 在一些实施方案中,生物相容性结构是可用作组织工程模板和/或作为人造器官的细胞的支架。 结构可以是三维的并且可以模拟组织和/或器官的形状和尺寸,包括组织和器官的微结构和孔隙率。 在一些情况下,通过三维制造形成的结构包括在壁的至少一部分中限定空腔和多个孔的壁。 孔可以渗透到壁上并且使得能够在空腔内部的部分和腔外部的部分(例如,分子和/或细胞)之间进行交换。 例如,孔可以允许在结构和其宿主环境之间传递分子,细胞迁移和/或结缔组织的产生。 本发明的结构可以植入哺乳动物,或者另外地和/或另外可以作为生物人造辅助装置离体使用。