Biodegradable shape memory polymeric sutures

US8303625B2 · kind B2 · utility

Assignee

• Helmholtz-Zentrum Geesthacht Zentrum für Material- und Küstenforschung GmbH

Inventors

• Andreas Lendlein · Berlin, DE
• Robert S. Langer · Newton, US

Key dates

• Filing date: Apr 18, 2003
• Grant date: Nov 6, 2012
• Expiry date: Nov 18, 2026

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61L2400/16
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Described herein are a group of degradable, thermoplastic polymers, which are able to change their shape after an increase in temperature. Their shape memory capability enables bulky implants to be placed in the body through small incisions or to perform complex mechanical deformations automatically. The shape memory polymers are preferably biocompatible and can be biodegradable or non-degradable polymers. Preferably, the biodegradable polymer has a linear degradation rate. In a specifically preferred embodiment, the suture is formed of biodegradable polymer capable of forming a self-tightening knot. In a most preferred embodiment, the suture is used to close a wound or body scission.