Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis
Patent
1993-07-21
1995-02-07
Green, Randall L.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
604 4, 604175, 424424, 2103216, A61F 202, A61F 200, A61M 3700, A61M 532
Patent
active
053872371
ABSTRACT:
An implantable bioartificial pancreas device having an islet chamber containing glucose responsive and insulin-secreting islets of Langerhans or similar hormone secreting cells, the islet chamber having baffle means inside thereof to assist in even distribution of the islets in the chamber, one or more vascularizing chambers open to surrounding tissue, a semi-permeable membrane between the islet and vascularizing chambers that allows passage of small molecules including insulin, oxygen and glucose and does not allow passage of agents of the immune system such as white cells and antibodies, the vascularizing chambers containing a growth factor soaked fibrous or foam matrix having a porosity of about 40 to 95%, the matrix providing small capillary growth and preventing the blood from clotting in the lower chamber.
REFERENCES:
patent: 4699141 (1987-10-01), Lamberton et al.
patent: 5002661 (1991-03-01), Chick et al.
patent: 5100392 (1992-03-01), Orth et al.
patent: 5116493 (1992-05-01), Chick et al.
patent: 5116494 (1992-05-01), Chick et al.
Fournier Ronald L.
Goldblatt Peter J.
Horner James M.
Sarver Jeffrey G.
Burke Elizabeth M.
Green Randall L.
The University of Toledo
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