Surgery – Blood drawn and replaced or treated and returned to body – Constituent removed from blood and remainder returned to body
Reexamination Certificate
2009-07-24
2010-12-14
Kim, John (Department: 1797)
Surgery
Blood drawn and replaced or treated and returned to body
Constituent removed from blood and remainder returned to body
C210S643000, C210S645000, C210S646000, C210S767000, C210S805000, C604S004010, C604S005010, C604S006090, C604S006110, C604S006160
Reexamination Certificate
active
07850633
ABSTRACT:
The present invention is directed to devices, systems and methods for removing undesirable materials from a sample fluid by contact with a second fluid. The sample fluid flows as a thin layer adjacent to, or between, concurrently flowing layers of the second fluid, without an intervening membrane. In various embodiments, a secondary separator is used to restrict the removal of desirable substances and effect the removal of undesirable substances from blood. The invention is useful in a variety of situations where a sample fluid is to be purified via a diffusion mechanism against an extractor fluid. Moreover, the invention may be used for the removal of components from a sample fluid that vary in size. When blood is the sample fluid, for example, this may include the removal of ‘small’ molecules, ‘middle’ molecules, macromolecules, macromolecular aggregates, and cells, from the blood sample to the extractor fluid.
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Leonard Edward F.
Shapley Nina C.
Tang Zhongliang
West Alan C.
Catan Mark A.
Kim John
Miles & Stockbridge P.C.
The Trustees of Columbia University in the City of New York
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