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    • 5. 发明申请
    • Fabrication of vascularized tissue using microfabricated two-dimensional molds
    • 使用微细二维模具制造血管化组织
    • US20070148139A1
    • 2007-06-28
    • US11591984
    • 2006-11-02
    • Joseph VacantiJeffrey BorensteinHomer PienBrian Cunningham
    • Joseph VacantiJeffrey BorensteinHomer PienBrian Cunningham
    • A61K35/14A61K9/70
    • A61L27/3604A61K35/12A61K35/44A61L27/38B33Y70/00C12N5/0671C12N5/0697C12N2502/14C12N2502/28C12N2535/10
    • A method and materials to create complex vascularized living tissue in three dimensions from a two-dimension microfabricated mold has been developed. The method involved creating a two dimensional surface having a branching structure etched into the surface. The pattern begins with one or more large channels which serially branch into a large array of channels as small as individual capillaries, then converge to one or more large channels. The etched surface serves a template within a mold formed with the etched surface for the circulation of an individual tissue or organ. Living vascular cells are then seeded onto the mold, where they form living vascular channels based on the pattern etched in the mold. Once formed and sustained by their own matrix, the top of the mold is removed. The organ or tissue specific cells are then added to the etched surface, where they attach and proliferate to form a thin, vascularized sheet of tissue. The tissue can then be gently lifted from the mold using techniques such as fluid flow and other supporting material, as necessary. The tissue can then be systematically folded and compacted into a three-dimensional vascularized structure. This structure can then be implanted into animals or patients by directly connecting the blood vessels to flow into and out of the device. Immediate perfusion of oxygenated blood occurs, which allows survival and function of the entire living mass.
    • 已经开发了从二维微加工模具在三维中产生复杂血管化活组织的方法和材料。 该方法涉及创建具有蚀刻到表面中的分支结构的二维表面。 该模式从一个或多个大的通道开始,该通道串行地分支成与单个毛细管一样小的通道的大阵列,然后收敛到一个或多个大通道。 被蚀刻的表面在形成有蚀刻表面的模具内形成模板,用于各个组织或器官的循环。 然后将活的血管细胞接种到模具上,基于在模具中蚀刻的图案形成活血管通道。 一旦通过自己的矩阵形成并维持,模具的顶部被移除。 然后将器官或组织特异性细胞加入到蚀刻的表面中,在那里它们附着和增殖以形成薄的,血管化的组织片。 然后可以根据需要使用诸如流体流动和其它支撑材料的技术从模具中轻轻地提起组织。 然后可以将组织系统地折叠并压实成三维血管结构。 然后可以通过直接连接血管流入和流出装置将该结构植入动物或患者体内。 发生氧合血液的立即灌注,这允许整个生物体的存活和功能。