Implantable biocompatible immunoisolatory vehicle for delivery of selected therapeutic products
First Claim
1. A method of providing a biologically active molecule or metabolic or immunologic function to a patient, comprising implanting into the body of the patient at least one immunoisolatory vehicle comprising:
- (a) a core comprising a volume in excess of 1 μ
l and at least about 104 living cells dispersed in a biocompatible matrix formed of a hydrogel, said cells being capable of secreting a biologically active product or of providing a metabolic or immunologic function to the patient; and
(b) an external jacket surrounding said core, said jacket being greater than 5 microns thick, said jacket being formed from a hydrogel that does not ionically bond to a polymer of opposite charge on the core during formation of the jacket, said jacket being free of said cells projecting externally therefrom, said jacket being biocompatible and having a molecular weight cutoff permitting passage of molecules between the patient and the core through said jacket to provide said biologically active product or function.
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Accused Products
Abstract
A method of providing a biologically active molecule or metabolic or immunologic function to a patient, comprising implanting into the body of the patient at least one immunoisolatory vehicle comprising a core comprising a volume in excess of 1 μl and at least about 104 living cells dispersed in a biocompatible matrix formed of a hydrogel or extracellular matrix components, said cells being capable of secreting a biologically active product or of providing a metabolic or immunologic function to the patient; and an external jacket surrounding said core, said jacket being formed from a thermoplastic or hydrogel, said jacket being free of said cells projecting externally therefrom, said jacket being biocompatible and having a molecular weight cutoff permitting passage of molecules between the patient and the core through said jacket to provide said biologically active product of function.
164 Citations
33 Claims
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1. A method of providing a biologically active molecule or metabolic or immunologic function to a patient, comprising implanting into the body of the patient at least one immunoisolatory vehicle comprising:
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(a) a core comprising a volume in excess of 1 μ
l and at least about 104 living cells dispersed in a biocompatible matrix formed of a hydrogel, said cells being capable of secreting a biologically active product or of providing a metabolic or immunologic function to the patient; and(b) an external jacket surrounding said core, said jacket being greater than 5 microns thick, said jacket being formed from a hydrogel that does not ionically bond to a polymer of opposite charge on the core during formation of the jacket, said jacket being free of said cells projecting externally therefrom, said jacket being biocompatible and having a molecular weight cutoff permitting passage of molecules between the patient and the core through said jacket to provide said biologically active product or function. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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2. A method of providing a biologically active molecule or metabolic or immunologic function to a patient, comprising implanting into the body of the patient at least one immunoisolatory vehicle comprising:
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(a) a core comprising a volume in excess of 1 μ
l and at least about 104 living cells dispersed in a biocompatible hydrogel matrix, said cells being capable of secreting a biologically active product or of providing a metabolic or immunologic function to the patient; and(b) an external jacket surrounding said core, said jacket comprising a biocompatible thermoplastic, said jacket being immunoisolatory and having a molecular weight cutoff permitting passage of molecules between the patient and core through said jacket to provide the biologically active product or function. - View Dependent Claims (13, 14)
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3. A method of providing a biologically active molecule or metabolic or immunologic function to a patient, comprising implanting into the body of the patient at least one implantable and retrievable immunoisolatory vehicle comprising:
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(a) a core comprising a volume in excess of 1 μ
l and at least 104 cells capable of providing said biologically active molecule or metabolic or immunologic function, said cells being dispersed in biocompatible extracellular matrix components, and(b) a surrounding external jacket of a biocompatible thermoplastic or hydrogel free of said cells projecting externally thereof, said jacket having molecular weight cutoff permitting passage of molecules between the patient and the core through said jacket to provide said biologically active molecule or function. - View Dependent Claims (12)
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Specification