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The Annals of Thoracic Surgery, Vol 58, 806-810, Copyright © 1994 by The Society of Thoracic Surgeons

ARTICLES

New approach to aortic dissection: development of an insertable aortic prosthesis

H Yoshida, K Yasuda and T Tanabe
Department of Cardiovascular Surgery, Hokkaido University, Sapporo, Japan.

We have developed a new aortic prosthesis with which we can replace or reinforce the aorta using a simple percutaneous technique. We have named the new prosthesis the shape-memory aortic prosthesis (SAP); it consists of a spiral-shaped nitinol stent and polyurethane tube. It can be compressed inside a 14F catheter at a low temperature and regain its original shape at above 30 degrees C. As a preliminary study, SAP sutureless grafting into the descending aorta was performed on 10 mongrel dogs. We found that when the proper diameter of SAP was applied, it functioned satisfactorily for 3 months or more. A percutaneous placement technique pertinent to the SAP also was developed and tried on 4 animals. Our procedure was applied to Stanford type B dissection models to close the entry point successfully. This newly developed SAP has potential to be applied to emergency cases of human aortic dissections.


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