摘要:
There is described a surgical fastener comprising a glycolide-rich blend of two or more polymers, one polymer being a high lactide content polymer and another being a high glycolide content polymer. The blend as a whole contains from about 65 to 85 weight percent polymerized glycolide, with the high glycolide content polymer constituting at least 50 weight percent of the blend.
摘要:
Block copolymers of glycolide and p-dioxanone are produced by reacting poly(p-dioxanone) that is substantially free of p-dioxanone monomer with glycolide.
摘要:
A sterile surgical suture comprising an absorbable, radiation sterilizable, normally solid polymer comprising a copolyester that comprises repeating divalent units of the formulas:(A) --O--CO--CH.sub.2 --O--CH.sub.2 CH.sub.2 --, and(B) --G--, and(C) --O--CO--CHR--O--.sub.m Ph--O--CHR--CO--O--wherein G represents the residue after removal of the hydroxyl groups of a dihydric alcohol, wherein Ph represents 1,2-, 1,3-, or 1,4-phenylene or alkyl- or alkoxy-substituted phenylene, wherein m represents a number having a value of 0 or 1, wherein R represents hydrogen or lower alkyl, and wherein the divalent units (A), (B), and (C) are bonded to each other through ester groups contained in said units.
摘要:
Novel copolymers of .epsilon.-caprolactone and glycolide useful in making surgical articles and particularly surgical sutures having Young's modulus of less than 250,000 psi. New and improved polymerization methods for producing the novel .epsilon.-caprolactone and glycolide copolymers.
摘要:
Absorbable, radiation sterilizable polymers, useful as sutures and other medical and surgical devices, are produced from polyesters of substituted benzoic acid, dihydric alcohols, and glycolide and/or lactide.
摘要:
Synthetic filaments composed of homopolymers and copolymers of poly(alkylene oxalates) are absorbable in animal tissue with minimal adverse tissue reaction. Polymers prepared by reacting a dialkyl oxalate with an alkylene diol are melt spun and drawn to obtain oriented fibers having good tensile properties and a high level of flexibility and softness. The filaments are particularly useful in the preparation of surgical prosthesis comprising woven or knitted fabrics and meshes. Other absorbable surgical devices including films and molded items may also be prepared from the disclosed polymer.
摘要:
Absorbable copolyoxalate polymers having isomorphic sequences are formulated with drugs and introduced into the body to provide a slow, sustained release of the drug over an extended period of time in accordance with the rate of absorption of the polymer. The copolyoxalate polymers are derived from mixtures of cyclic and linear diols, each having the same number of carbon atoms. The polymers are biodegradable in animal tissue and absorb with minimal adverse tissue reaction.
摘要:
Crystalline copolymer comprising the reaction product of: a) a predominant amount of a high molecular weight prepolymer of .epsilon.-caprolactone and glycolide, and b) the balance glycolide. A surgical device such as a surgical filament, in particular a surgical suture, prepared by injection molding or melt spinning the crystalline copolymer.