Multiple-layer, formed-in-place immunoisolation membrane structures for
implantation of cells in host tissue
    3.
    发明授权
    Multiple-layer, formed-in-place immunoisolation membrane structures for implantation of cells in host tissue 失效
    用于在宿主组织中植入细胞的多层形成的免疫隔离膜结构

    公开(公告)号:US6060640A

    公开(公告)日:2000-05-09

    申请号:US446210

    申请日:1995-05-19

    摘要: A permeable structure forms a chamber to hold living cells. The structure includes a first permeable region surrounding at least a portion of the chamber having a conformation that, when implanted in host tissue, substantially blocks penetration of host cells into the chamber while permitting solute transport. The structure also includes a second permeable region overlying the first permeable region having a conformation that, when implanted in host tissue, forms a permeable interface with host tissue that permits solute transport. A third permeable region is located between the first and second permeable regions. The third region comprises a solution of polymer material formed in place between the first and second permeable regions. The third permeable region bonds the first and second permeable regions together. The third permeable region also has a conformation that, when implanted in host tissue, permits solute transport between the first and second permeable regions. The third, formed-in-place region bonds the first and second permeable regions together, providing a robust, laminated structure that resists delamination during implantation caused by cellular infiltration into discontinuous spaces between the first and second regions. The third, formed-in-place region can also have a conformation providing an immunoisolation effect. Furthermore, the permeability of the third, formed-in-place membrane is sufficient high that it does not adversely effect the permeability value desired for the overall multiple layer membrane structure.

    摘要翻译: 可渗透结构形成容纳活细胞的室。 所述结构包括围绕所述腔室的至少一部分的第一可渗透区域,其具有当植入宿主组织时基本上阻挡宿主细胞渗入所述腔室同时允许溶质运输的构象。 该结构还包括覆盖第一可渗透区域的第二可渗透区域,其具有当植入宿主组织中时形成允许溶质运输的宿主组织的可渗透界面的构象。 第三可渗透区域位于第一和第二可渗透区域之间。 第三区域包括在第一和第二可渗透区域之间形成的聚合物材料溶液。 第三可渗透区域将第一和第二可渗透区域结合在一起。 第三可渗透区域还具有当植入宿主组织时允许溶质在第一和第二可渗透区域之间传输的构象。 第三个就地区域将第一和第二可渗透区域结合在一起,提供坚固的层压结构,其抵抗由于细胞浸润到第一和第二区域之间的不连续空间而在植入过程中的分层。 第三个就地区域也可以具有提供免疫隔离作用的构象。 此外,第三成形膜的渗透性足够高,使得其不会对整个多层膜结构所期望的渗透性值产生不利影响。

    Closed porous chambers for implanting tissue in a host
    5.
    发明授权
    Closed porous chambers for implanting tissue in a host 失效
    用于在组织中植入组织的封闭多孔室

    公开(公告)号:US5653756A

    公开(公告)日:1997-08-05

    申请号:US300173

    申请日:1994-09-02

    摘要: Improved Implant assemblies and methodologies provide immuno-protection for implanted allografts, xenografts, and isografts. The assemblies and methodologies establish an improved chamber for holding the implanted cells. The chambers include first and second wall elements and an intermediate sealing element. The first and second wall elements overlie an open area in the sealing member to form a chamber for holding cells for implantation. A sealed region is created between the wall elements and the sealing element body to close the chamber. In one arrangement, the sealed region is created by means of a sonic weld made while the implanted cells are present in the chamber. In another arrangement, the sealed region is created by means of applying an external force to compress the peripheral edges of the wall elements and the sealing element together while the implanted cells are present in the chamber.

    摘要翻译: 改进的植入物组件和方法为植入的同种异体移植物,异种移植物和同种移植物提供免疫保护。 组件和方法建立了用于保持植入细胞的改进室。 这些室包括第一和第二壁元件和中间密封元件。 第一和第二壁元件覆盖在密封构件中的开放区域以形成用于保持用于植入的细胞的室。 在壁元件和密封元件主体之间产生密封区域以关闭室。 在一种布置中,通过在植入的细胞存在于腔室中时进行的声波焊接来产生密封区域。 在另一种布置中,通过施加外力来将密封区域产生,以将壁元件和密封元件的周边边缘压缩在一起,同时植入的电池存在于腔室中。

    Closed porous chambers for implanting tissue in a host
    6.
    发明授权
    Closed porous chambers for implanting tissue in a host 失效
    用于在组织中植入组织的封闭多孔室

    公开(公告)号:US5344454A

    公开(公告)日:1994-09-06

    申请号:US861952

    申请日:1992-04-01

    摘要: Improved Implant assemblies and methodologies provide immuno-protection for implanted allografts, xenografts, and isografts. The assemblies and methodologies establish an improved chamber for holding the implanted cells. The chambers include first and second wall elements and an intermediate sealing element. The first and second wall elements overlie an open area in the sealing member to form a chamber for holding cells for implantation. A sealed region is created between the wall elements and the sealing element body to close the chamber. In one arrangement, the sealed region is created by means of a sonic weld made while the implanted cells are present in the chamber. In another arrangement, the sealed region is created by means of applying an external force to compress the peripheral edges of the wall elements and the sealing element together while the implanted cells are present in the chamber.

    摘要翻译: 改进的植入物组件和方法为植入的同种异体移植物,异种移植物和同种移植物提供免疫保护。 组件和方法建立了用于保持植入细胞的改进室。 这些室包括第一和第二壁元件和中间密封元件。 第一和第二壁元件覆盖在密封构件中的开放区域以形成用于保持用于植入的细胞的室。 在壁元件和密封元件主体之间产生密封区域以关闭室。 在一种布置中,通过在植入的细胞存在于腔室中时进行的声波焊接来产生密封区域。 在另一种布置中,通过施加外力来产生密封区域,以在腔室中存在植入的细胞的同时将壁元件和密封元件的周边边缘压缩在一起。

    Device to Indicate Priming of an Infusion Line
    8.
    发明申请
    Device to Indicate Priming of an Infusion Line 有权
    指示灌注线灌注的装置

    公开(公告)号:US20100063445A1

    公开(公告)日:2010-03-11

    申请号:US12555606

    申请日:2009-09-08

    IPC分类号: A61J1/18 A61M39/00 G08B21/00

    摘要: A priming indicator for a fluid infusion system includes a luer cap or other component of the infusion system having an indicator surface covered by a membrane. The membrane exhibits a first visual characteristic, such as being opaque, when dry and exhibits a second characteristic, such as becoming less opaque, when wet. Once the membrane becomes wet, indicia on the surface, which may be provided on a rod at least partially covered by the membrane, becomes visible, thereby indicating an intravenous tube to which the luer cap is secured has been primed or is nearly primed. The indicator may alternately be employed at an upstream end of an infusion set, such as at the port of a medical bag providing a supply of fluid, to indicate a low level of fluid in the medical bag.

    摘要翻译: 用于流体输注系统的起动指示器包括输注系统的路厄帽或其他组件,其具有由膜覆盖的指示器表面。 当膜干燥时,膜呈现第一视觉特征,例如不透明的,并且当湿时呈现第二特性,例如变得不透明。 一旦膜变湿,可以设置在至少部分地被膜覆盖的杆上的表面上的标记变得可见,从而指示固定有鲁尔帽的静脉内管已经被引发或几乎被引发。 可以在输液器的上游端(例如在提供流体供应的医疗袋的端口处)使用指示器,以指示医疗袋中的低水平的流体。

    Device to indicate priming of an infusion line
    10.
    发明授权
    Device to indicate priming of an infusion line 有权
    指示灌注线灌注的装置

    公开(公告)号:US08398590B2

    公开(公告)日:2013-03-19

    申请号:US12555606

    申请日:2009-09-08

    IPC分类号: A61M5/00

    摘要: A priming indicator for a fluid infusion system includes a luer cap or other component of the infusion system having an indicator surface covered by a membrane. The membrane exhibits a first visual characteristic, such as being opaque, when dry and exhibits a second characteristic, such as becoming less opaque, when wet. Once the membrane becomes wet, indicia on the surface, which may be provided on a rod at least partially covered by the membrane, becomes visible, thereby indicating an intravenous tube to which the luer cap is secured has been primed or is nearly primed. The indicator may alternately be employed at an upstream end of an infusion set, such as at the port of a medical bag providing a supply of fluid, to indicate a low level of fluid in the medical bag.

    摘要翻译: 用于流体输注系统的起动指示器包括输注系统的路厄帽或其他组件,其具有由膜覆盖的指示器表面。 当膜干燥时,膜呈现第一视觉特征,例如不透明的,并且当湿时呈现第二特性,例如变得不透明。 一旦膜变湿,可以设置在至少部分地被膜覆盖的杆上的表面上的标记变得可见,从而指示固定有鲁尔帽的静脉内管已经被引发或几乎被引发。 可以在输液器的上游端(例如在提供流体供应的医疗袋的端口处)使用指示器,以指示医疗袋中的低水平的流体。