Title:
医用液および生体液を濾過するシステム
Document Type and Number:
Japanese Patent JP4368423
Kind Code:
B2
Abstract:
A method and apparatus for filtering suspensions of medical and biological fluids, one aspect of which is separating a suspension comprising at least two types of particles which are differently sized or shaped and in which the first type of particle may be deformable at a relatively lower force and/or faster rate than the second type of particle. A filter member is provided having substantially precisely dimensioned pore sizes, with the pores being dimensioned to allow passage of the first type of suspended particle without distortion or only minimal distortion and passage of the second type of particle only with substantial distortion. Because the filter membrane has precisely dimensioned pores, with spacing between the pores being maintained despite the smaller interval between the pores, the porosity of the membrane may be much greater than nominal pore size membranes, allowing faster filtration rates and/or smaller membranes for a given filtration rate, while reducing the exposure time of the cells within the shear environment, and consequently reducing particle damage. Various methods for preventing clogging of the membrane are also disclosed.
Inventors:
Prince, Paul Earl
Pekka Linen, Michael Oh.
Bellamy, David Junior
Sternberg, Shmuel
Pekka Linen, Michael Oh.
Bellamy, David Junior
Sternberg, Shmuel
Application Number:
JP51585798A
Publication Date:
November 18, 2009
Filing Date:
September 22, 1997
Export Citation:
Assignee:
BAXTER INTERNATIONAL INCORP0RATED
International Classes:
B01D69/00; B01D39/16; B01D61/14; B01D61/22; B01D63/16; B01D65/08; B01D69/02; A61M1/26; A61M1/34
Domestic Patent References:
| JP64075015A | ||||
| JP1224324A | ||||
| JP59155758A |
Foreign References:
| US5543046 | ||||
| WO1988004184A1 | ||||
| WO1995013860A1 | ||||
| US4923608 | ||||
| US5464534 | ||||
| DE3631804A1 |
Attorney, Agent or Firm:
Hidesaku Yamamoto