Bioreactor design and process for engineering tissue from cells
First Claim
1. A bioreactor, comprising:
- (a) a housing having an inner side comprising;
a gas introduction means integral to the housing; and
a gas expiration means integral to the housing;
(b) a plurality of modules of hollow fibers, residing within the housing, each module comprising;
(i) at least three coaxially arranged hollow fibers, each hollow fiber having an inner side and an outer side, including an innermost hollow fiber and an outermost hollow fiber;
(ii) at least three compartments, comprising;
a first compartment defined by an inner side of an innermost hollow fiber and at least two compartments defined by a respective annular space between adjacent fibers of the at least three coaxially arranged hollow fibers; and
(c) an outermost compartment defined by a space within the inner side of the housing which is not occupied by the plurality of modules;
in which at least one compartment is charged with a gaseous nutrient substantially free of non-gaseous fluids.
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Accused Products
Abstract
A scaled-up multi-coaxial fiber bioreactor, and variations of this bioreactor. The device is characterized by a hollow housing and an array of from about 20 to about 400 modules of hollow fibers, where each module includes at least three coaxial semipermeable hollow fibers. The innermost fiber provides a boundary for an innermost compartment which is connected to inlet and outlet ports. Arranged coaxially around the central hollow fiber are several other hollow fibers with their respective compartments, each compartment defined by a respective annular space between adjacent fibers and each including inlet and outlet ports. An outermost compartment for permitting integral aeration is the space between the outer side of the outermost fibers and the inner side of the housing, and has inlet and outlet ports. The hollow housing has inlet and outlet manifolds and flow distributors for each of the compartments. In a preferred embodiment the bioreactor is used as an extracorporeal liver. Liver cells, are introduced into one or more annular compartments and media and aeration are provided in others. Plasma from an ailing patient is introduced into another compartment for biotransformation of blood-borne toxins and biosynthesis of proteins, lipids, and other metabolic products.
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Citations
37 Claims
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1. A bioreactor, comprising:
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(a) a housing having an inner side comprising;
a gas introduction means integral to the housing; and
a gas expiration means integral to the housing;(b) a plurality of modules of hollow fibers, residing within the housing, each module comprising; (i) at least three coaxially arranged hollow fibers, each hollow fiber having an inner side and an outer side, including an innermost hollow fiber and an outermost hollow fiber; (ii) at least three compartments, comprising;
a first compartment defined by an inner side of an innermost hollow fiber and at least two compartments defined by a respective annular space between adjacent fibers of the at least three coaxially arranged hollow fibers; and(c) an outermost compartment defined by a space within the inner side of the housing which is not occupied by the plurality of modules; in which at least one compartment is charged with a gaseous nutrient substantially free of non-gaseous fluids. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A serially-linked bioreactor, comprising a plurality of bioreactor subunits, each bioreactor subunit comprising:
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(a) a housing having an inner side comprising;
a gas introduction means integral to the housing; and
a gas expiration means integral to the housing;(b) a plurality of modules of hollow fibers, residing within the housing, each module comprising; (i) at least three coaxially arranged hollow fibers, each hollow fiber having an inner side and an outer side, including an innermost hollow fiber and an outermost hollow fiber; (ii) at least three compartments, comprising;
a first compartment defined by an inner side of an innermost hollow fiber; and
at least two compartments defined by a respective annular space between adjacent fibers of the at least three coaxially arranged hollow fibers; and(c) an outermost compartment defined by a space within the inner side of the housing which is not occupied by the plurality of modules; and (d) at least one compartment of one bioreactor subunit linked serially to at least one compartment of at least one other bioreactor subunit; in which at least one compartment is charged with a gaseous nutrient substantially free of non-gaseous fluids. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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Specification