Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1991-12-23
1994-08-23
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
424 7826, 424 7827, 424 7837, 424422, 424426, 525411, 525937, C08L 6700, C08L 6900, C08L 7700, A61F 200
Patent
active
053408497
ABSTRACT:
A biodegradable polymer is provided for use in providing syringeable, in-situ forming, solid biodegradable implants for animals. The polymer is placed into the animal in liquid form and cures to form the implant in-situ. A thermoplastic system to form said implant comprises the steps of dissolving a non-reactive polymer in biocompatible solvent to form a liquid, placing the liquid within the animal, and allowing the solvent to dissipate to produce the implant. An alternative, thermosetting system comprises mixing together effective amounts of a liquid acrylic ester terminated, biodegradable prepolymer and a curing agent, placing the liquid mixture within an animal and allowing the prepolymer to cure to form the implant. Both systems provide a syringeable, solid biodegradable delivery system by the addition of an effective level of biologically active agent to the liquid before injection into the body.
REFERENCES:
patent: 4408023 (1983-10-01), Gould et al.
patent: 5077049 (1991-12-01), Dunn et al.
Cowsar Donald R.
Dunn Richard L.
English James P.
Vanderbilt David D.
Atrix Laboratories, Inc.
Merriam Andrew E. C.
Michl Paul R.
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