Takiron Co., Ltd.

Biomaterials Universe, Inc.

Kaoru Tsuta

Yasuo Shikinami

Hidekazu Boutani

Masahiko Taniguchi

Yoshito Ikada

Suong-Hyu Hyon

Biodegradable and resorbable surgical materials of molded articles of poly(lactic acid) or copolymers of lactic acid and glycolic acid, characterized in that the articles are molecular-orientated, and having a bending strength of 1.6.times.10.sup.33 to 2.5.times.10.sup.3 kg/cm.sup.2, a bending modulus of 5.5.times.10.sup.2 to 24.0.times.10.sup.2 kg/cm.sup.2, a crystallinity, determined by density measurement, of 10 to 60%, and a viscosity average molecular weight measured after melt processing of not less than 200,000, and in that at least 80% of initial strength of the articles is maintained after dipping in a saline at 37.degree. C. for three months.

Biodegradable and resorbable surgical material and process for

A one-component system polyurethane gel and a coupler for ultrasonic diagnostic probes comprising the same are disclosed. The gel is obtained by reacting a polyol having a room temperature liquid alkylene oxide chain and/or a polyurethane polyol prepolymer having a room temperature liquid alkylene oxide chain with a polyurethane polyisocyanate prepolymer having a room temperature liquid alkylene oxide chain. The gel causes no bleeding or evaporation of a dispersion medium and is therefore excellent in safety to the human body and preservation stability.

Liquid segment polyurethane gel and couplers for ultrasonic diagnostic

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Osaka, Japan

Kaoru Tsuta