Namassivaya Doddi, Charles C Versfelt, David Wasserman: Synthetic absorbable surgical devices of poly-dioxanone. Ethicon, Wayne R Eberhardt, October 11, 1977: US04052988 (254 worldwide citation)

Synthetic absorbable sutures and other surgical devices are prepared from polymers of p-dioxanone and 1,4-dioxepan-2-one, and alkyl substituted derivatives thereof. Monofilament sutures of oriented fibers are characterized by good tensile and knot strength and a high level of flexibility and softnes ...

David Wasserman, Charles C Versfelt, Dowon Hahn, Michael P Wachter: Absorbable polymer-drug compounds and method for making same. Ethicon, May 4, 1982: US04328204 (26 worldwide citation)

Drugs with active hydrogen containing groups are reacted with .alpha.-polyester homopolymers and copolymers to form compounds which slowly absorb and release the drug when implanted in animal tissue.