Disposable tangential flow filtration device holder
View Patent ↗Tangential flow filtration device is provided wherein liners are provided between the filtration element and the top and bottom holders or manifolds. The liners incorporate the flow channels and inlet and outlet ports that were previously present in the manifolds. The liners are made of an inexpensive material and therefore are disposable after a single use, making it more cost effective to dispose of them than to clean the conventional manifolds. In addition, the liners can be pre-sterilized.
1. A method of assembling a filtration apparatus, comprising:
providing a top plate devoid of a fluid flow path and having a grooveless substantially flat surface; a bottom plate devoid of a fluid flow path and having a grooveless substantially flat surface; a filtration member; a first disposable liner having a fluid inlet, a fluid outlet, a plurality of fluid inlet apertures, and a pattern of ribs on one side thereof; a second disposable liner having a fluid inlet, a fluid outlet, a plurality of fluid outlet apertures and a pattern of ribs on one side thereof;
bringing together said top plate, said first and second liners, said filtration member and said bottom plate such that said substantially flat surface of said top plate abuts against said pattern of ribs on said first disposable liner and said substantially flat surface of said bottom plate abuts against said pattern of ribs on said second disposable liner, and said filtration member is positioned between said first and second disposable liners, to form a filtration assembly; and
applying a clamping force to said filtration assembly, causing said respective patterns of ribs on said first and second liners to seal against the respective said grooveless substantially flat surfaces of said top and bottom plates.
2. The method of claim 1 , wherein each said pattern of ribs defines a grid pattern, each said grid pattern retaining a respective liner in a flat configuration when mated with the respective top and bottom plates and subjected to pressure.
3. The method of claim 1 , wherein said plurality of ribs on each respective liner are inter-engaging.
4. The method of claim 1 , wherein said plurality of ribs on each of said first and second disposable liners comprises a plurality of parallel latitudinal ribs and a plurality of parallel longitudinal ribs perpendicular to said plurality of latitudinal ribs.
5. The method of claim 4 , wherein said plurality of longitudinal ribs are equally spaced.