公开(公告)号：US06599420B2

公开(公告)日：2003-07-29

申请号：US09734013

申请日：2000-12-12

申请人： Nobuyuki Sugiyama ,  Kazuo Shiraiwa

发明人： Nobuyuki Sugiyama ,  Kazuo Shiraiwa

IPC分类号： B01D3500

CPC分类号： B01D29/111 ,  B01D29/27

摘要： A filter bag (1) comprises a first thin plastic film (22); a second thin plastic film (21) having substantially the same size with the first plastic film and sealed to the first plastic film at a first side-peripheral edge (2a), a second side-peripheral edge (2b) opposite to the first side-peripheral edge and a bottom peripheral edge (2d) thereof to provide an open-top interior, and a filter sheet (5) having a length substantially equal to the first and second plastic films and a width smaller than the first and second plastic films. The filter sheet has a first longitudinal edge (5a) interposed and sealed together between the first side-peripheral edges of the first and second plastic films and a second longitudinal edge (5b), opposite to the first longitudinal edge, sealed to the inside of the first plastic film at an intermediate position in width of the filter bag. The filter sheet is also sealed to the inside of the second plastic film, in vicinity to the first longitudinal edge, to provide a half-length seam (5c) extending from the open top edge halfway toward the bottom of the filter bag. A sample receiving section (3) of a larger volume is defined between the first and second plastic films and the filter sheet whereas a suspension collection section (4) of a smaller volume is defined between the first plastic film and the filter sheet. The first plastic film preferably includes a pull-tab (7) near the open top edge, between the second longitudinal edge and the half-length seam. The pull-tab is manually pulled down over a given length to provide a pipette-inserting window.

摘要翻译： 过滤袋（1）包括第一薄塑料膜（22）; 第二薄塑料膜（21），其具有与第一塑料膜基本相同的尺寸并且在第一侧周边边缘（2a）处密封到第一塑料膜，第二侧周边边缘（2b）与第一侧边相对 - 外周边缘和其底部周边边缘（2d）以提供开放顶部内部，以及具有基本上等于第一和第二塑料膜的长度的滤光片（5），并且具有小于第一和第二塑料膜的宽度 。 过滤片具有插入并密封在第一和第二塑料膜的第一侧边缘之间的第一纵向边缘（5a）和与第一纵向边缘相对的第二纵向边缘（5b），密封到第一纵向边缘 在过滤袋宽度的中间位置处的第一塑料膜。 过滤片也被密封到第二塑料膜的内部，靠近第一纵向边缘，以提供从打开的顶部边缘中途向过滤袋的底部延伸的半长的接缝（5c）。 在第一和第二塑料膜和过滤片之间限定较大体积的样品接收部分（3），而在第一塑料膜和过滤片之间限定较小体积的悬浮液收集部分（4）。 第一塑料膜优选地包括在开口顶边缘附近，在第二纵向边缘和半长度接缝之间的拉片（7）。 在特定长度上手动拉下拉片以提供移液管插入窗口。

公开(公告)号：US06443314B1

公开(公告)日：2002-09-03

申请号：US09792048

申请日：2001-02-26

申请人： Kazuo Shiraiwa ,  Shin-ichi Waku ,  Masamichi Tawara ,  Yuichi Nishimura

发明人： Kazuo Shiraiwa ,  Shin-ichi Waku ,  Masamichi Tawara ,  Yuichi Nishimura

IPC分类号： B01D6308

摘要： Disclosed is a membrane filter system comprising an integral plastic holder (1, 23) having a filter receiving section (2, 24) for receiving a membrane filter (3, 30) that collects target microorganism contained in sample solution, a funnel mount (9, 25) positioned at a level higher than the filter receiving section for carrying thereon a cup-shaped paper funnel (12, 33) adapted to receive the sample solution, and a drainage (7, 28) communicated with the filter receiving section. The funnel has a bottom sheet or a paper filter (14, 35) and a bottom peripheral flange (15, 36) surrounding the bottom sheet. Resin seal means (11, 22) is fitted to the funnel mount to provide liquid-tight engagement between the funnel and the holder. The bottom sheet of the funnel is positioned above the membrane filter and serves as a primary filter for collecting particles in the sample solution larger than the target microorganism before the sample solution reaches the membrane filter.