Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Carbohydrate doai
Reexamination Certificate
2007-08-07
2007-08-07
Lewis, Patrick (Department: 1623)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Carbohydrate doai
C536S123100, C536S123120
Reexamination Certificate
active
10476854
ABSTRACT:
The present invention concerns the preparation of composite biomaterials constituted by hyaluronic acid and the derivatives thereof in combination with polymers that have electrically conductive properties. In particular, the methods of preparing biomedical devices formed by a two- or three-dimensional polysaccharide matrix and by an electrically conductive membrane. The matrix is constituted by hyaluronic acid derivatives in the form of membranes, woven fabrics, nonwoven felts, meshes, gauzes, guide channels or sponges, while the electrically conductive membrane is constituted by a film of polypyrrole (polymer conductor) in combination with hyaluronic acid or a derivative thereof (doping agent).
REFERENCES:
patent: WO 89/03876 (1989-05-01), None
patent: WO 95/25751 (1995-09-01), None
patent: WO 96/04340 (1996-02-01), None
patent: WO 97/16545 (1997-05-01), None
Collier et al. Journal of Biomedical Materials Research (Jun. 2000), vol. 50, pp. 574-584.
Collier J H et al. : Journal of Biomedical Materials Research, vol. 50, No. 4, (Jun. 15, 2000), pp. 574-585, XP009001195.
Garner B et al. : Journal of Biomedical Materials Research, vol. 44, (Feb. 1999), pp. 121-129, XP000964695.
Abbati Gianluca
Crescenzi Vittorio
Panero Stefania
Renier Davide
Birch & Stewart Kolasch & Birch, LLP
Fidia Advanced Biopolymers S.R.L.
Lewis Patrick
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