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.
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ASME 8th Biennial Conference on Engineering Systems Design and Analysis
July 4–7, 2006
Torino, Italy
ISBN:
0-7918-4249-5
PROCEEDINGS PAPER
Shape Memory Polymer Porous Structures for Mini-Invasive Surgical Procedures
Luigi de Nardo,
Luigi de Nardo
Politecnico di Milano, Milano, Italy
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Sabrina De Cicco,
Sabrina De Cicco
Politecnico di Milano, Milano, Italy
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Matteo Jovenitti,
Matteo Jovenitti
Politecnico di Milano, Milano, Italy
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Maria C. Tanzi,
Maria C. Tanzi
Politecnico di Milano, Milano, Italy
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Silvia Fare`
Silvia Fare`
Politecnico di Milano, Milano, Italy
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Luigi de Nardo
Politecnico di Milano, Milano, Italy
Sabrina De Cicco
Politecnico di Milano, Milano, Italy
Matteo Jovenitti
Politecnico di Milano, Milano, Italy
Maria C. Tanzi
Politecnico di Milano, Milano, Italy
Silvia Fare`
Politecnico di Milano, Milano, Italy
Paper No:
ESDA2006-95559, pp. 539-544; 6 pages
Published Online:
September 5, 2008
Citation
de Nardo, L, De Cicco, S, Jovenitti, M, Tanzi, MC, & Fare`, S. "Shape Memory Polymer Porous Structures for Mini-Invasive Surgical Procedures." Proceedings of the ASME 8th Biennial Conference on Engineering Systems Design and Analysis. Volume 2: Automotive Systems, Bioengineering and Biomedical Technology, Fluids Engineering, Maintenance Engineering and Non-Destructive Evaluation, and Nanotechnology. Torino, Italy. July 4–7, 2006. pp. 539-544. ASME. https://doi.org/10.1115/ESDA2006-95559
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