NDLI: Shape Memory Polymer Porous Structures for Mini-Invasive Surgical Procedures

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Nardo, Luigi De Cicco, Sabrina De Jovenitti, Matteo Maria, C. Tanzi Fare`, Silvia
Copyright Year	2006
Abstract	In the recent past, clinical procedures underwent huge modifications. Among them, mini-invasive surgery has modified the clinical practice and the quality of life of patients. All these evolutions are strictly correlated to the advancement in materials science. Shape Memory Polymers (SMPs), a novel class of stimuli-responsive materials, can be considered ideal candidates for the design of devices for mini-invasive surgery. Such devices can be inserted in a compact temporary shape and subsequently expanded at body temperature: a bone defect, e.g., could be filled by a filler made of SMPs. With the aim of promoting tissue integration and healing, these structures should present a suitable porosity. In this work two different processing techniques to obtain shape memory polymer scaffolds from Calo·MER™, a SMP, are presented. Porous structures were obtained by micro-extrusion, with different chemical expanding agents or by particulate leaching with salt. Morphology, thermo-mechanical and shape recovery properties of the SMP porous samples were investigated. The obtained foams show a well interconnected morphology, with a pore size in the range suitable for bone applications. Shape memory properties were not significantly affected by the transformation processes: a good ability of recovering the original shape was verified. Therefore, foams obtained from these materials could be used to fabricate devices for mini-invasive surgical procedures.
Starting Page	539
Ending Page	544
Page Count	6
File Format	PDF
ISBN	0791842495
DOI	10.1115/ESDA2006-95559
e-ISBN	0791837793
Volume Number	Volume 2: Automotive Systems, Bioengineering and Biomedical Technology, Fluids Engineering, Maintenance Engineering and Non-Destructive Evaluation, and Nanotechnology
Conference Proceedings	ASME 8th Biennial Conference on Engineering Systems Design and Analysis
Language	English
Publisher Date	2006-07-04
Publisher Place	Torino, Italy
Access Restriction	Subscribed
Subject Keyword	Mini-invasive procedures Shape memory polymers Bone repair Surgery Bone
Content Type	Text
Resource Type	Article

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