Device for Repair Surgery of Cylindrical Organs, Particularly Ruptured Tendons

摘要

A device for repair surgery of cylindrical organs, particularly ruptured tendons, is configured as a tubular sheath (T) made of a biocompatible and biodegradable polymer. The tubular sheath comprises an elastic fiber mesh formed by electrospinning of said polymer and has an inner wall surface and an outer wall surface substantially parallel thereto. One of said wall surfaces is comparatively rough (WR) and the other one of said wall surfaces is comparatively smooth (WS), with the tubular sheath having a Young elasticity modulus of about 2 to about 5 MPa and an elongation at break of about 50 to about 1,000%. Preferably, the polymer is a biodegradable polyester urethane block copolymer with poly-hydroxy-butyrate as a hard 10 segment and ε-caprolactone as a soft segment.

主权项

1. A device for repair surgery of cylindrical organs, particularly ruptured tendons, configured as a tubular sheath (T) made of a biocompatible and biodegradable polymer, characterized in that said tubular sheath comprises an elastic fiber mesh formed by electrospinning of said polymer, said tubular sheath having an inner wall surface and an outer wall surface substantially parallel thereto, wherein one of said wall surfaces is comparatively rough (WR) and the other one of said wall surfaces is comparatively smooth (WS), said tubular sheath having a Young elasticity modulus of about 2 to about 15 MPa and an elongation at break of about 50 to about 1,000%, wherein said polymer is a biodegradable polyester urethane block copolymer with poly-hydroxy-butyrate as a hard segment and c-caprolactone as a soft segment, characterized in that said soft segment has an average molecular weight of about 950 g/mol to about 1,200 g/mol and wherein the relative content of said soft segment is about 70 to about 75 parts by weight whereas the relative content of said hard segment is about 25 to about 30 parts by weight.