Title:
BIODEGRADABLE SHAPE MEMORY POLYMER
Document Type and Number:
Japanese Patent JP2007314797
Kind Code:
A
Abstract:
To provide a shape memory polymer composition which has biodegradability and can be reabsorbed in vivo, and to provide the use thereof in medical apparatuses.
The compositions include at least one hard segment and at least one soft segment. The glass transition point (Ttrans) of the hard segment is preferably between -30°C and 270°C. At least one of the hard or soft segments can contain a cross-linkable group, and the segments can be linked by formation of an interpenetrating network or a semi-interpenetrating network, or by physical interactions of the segments. Objects can be formed into a given shape at a temperature above the Ttransof the hard segment, and cooled to a temperature below the Ttransof the soft segment. If the object is subsequently formed into a second shape, the object can return to its original shape by heating the object above the Ttransof the soft segment and below the Ttransof the hard segment.
COPYRIGHT: (C)2008,JPO&INPIT
Inventors:
LANGER ROBERT S
LENDLEIN ANDREAS
SCHMIDT ANNETTE
GRABLOWITZ HANS
Application Number:
JP2007190922A
Publication Date:
December 06, 2007
Filing Date:
July 23, 2007
Assignee:
MASSACHUSETTS INST TECHNOLOGY
International Classes:
A61C7/00; A61B17/58; C08G81/00; A61F5/01; A61K47/30; A61L27/00; A61L27/14; A61L27/18; A61L27/50; A61L27/58; A61L29/00; A61L29/04; A61L29/14; A61L31/00; A61L31/04; A61L31/14; C08G18/42; C08G18/48; C08L101/00; C08L101/16
Attorney, Agent or Firm:
Yoshio Kawaguchi
Makoto Ono
Chihiro Watanabe
Kenkyo Kanayama
Katsuma Osaki
Mitsuaki Tsubokura
