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    • 9. 发明授权
    • Method of closing a cell containment device with a wet seal
    • 用湿密封封闭电池容纳装置的方法
    • US06617151B1
    • 2003-09-09
    • US09515264
    • 2000-02-29
    • Steven C. NewmanBrian H. KramTerry A Hubbard
    • Steven C. NewmanBrian H. KramTerry A Hubbard
    • C12M100
    • A61K9/0024A61F2/022
    • A method is provided for closing a containment device that involves wetting at least a portion of a permeable polymeric membrane such as tubular membrane with a liquid such as a cell suspension or drug formulation the device is being filled with, and applying heat to at least a portion of a wetted thermoplastic polymer in association with the membrane to form a “wet seal” closure. The thermoplastic polymer melts at a lower temperature than the polymeric membrane and the melted polymer integrates with the membrane by flowing along surfaces and into available interstices of the membrane to form a cell-tight closure when the polymer cools below its melt temperature. The application of heat may be accompanied by slight pressure, and a heat sink may be applied to limit heat transfer beyond the closure region to the membrane. In association with melting of the polymer, the membrane/thermoplastic polymer combination may be twisted and/or elongated, and twisting may form a separation region which can be cut to form first and second devices. The membrane and thermoplastic polymer may be made of polytetrafluoroethylene and fluorinated ethylene propylene, respectively. The containment device may be directly implanted into a recipient in need of a treatment provided by contents of the device.
    • 提供了一种封闭容纳装置的方法,该容纳装置涉及用例如细胞悬浮液或装置所填充的药物制剂的液体润湿至少一部分可渗透的聚合物膜(例如管状膜),并将热量施加至至少一种 与膜结合的湿润热塑性聚合物的一部分以形成“湿密封”封闭。 热塑性聚合物在比聚合物膜低的温度下熔化,并且当聚合物冷却到低于其熔融温度时,熔融的聚合物通过沿着表面流动并进入膜的可用间隙而形成细胞密封的闭合物。 热的施加可能伴随着轻微的压力,并且可以施加散热器以限制超过封闭区域的热传递到膜。 与聚合物的熔融相关联,膜/热塑性聚合物组合可以被扭曲和/或伸长,并且扭转可以形成可以被切割以形成第一和第二装置的分离区域。 膜和热塑性聚合物可以分别由聚四氟乙烯和氟化乙烯丙烯制成。 容纳装置可以直接植入到需要由装置的内容物提供的处理的接收器中。