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Eur J Cardiothorac Surg 2005;28:191-193
© 2005 Elsevier Science NL

Editorial

From the dis-covered stent to the valved stent: you learn from your mistakes!!

Académie Nationale de Médecine, Service de Chirurgie Thoracique et Cardiovasculaire, CNRS UMR 7054—Hôpital Henri Mondor, 51 avenue du Maréchal de Lattre de Tassigny, 94010 Créteil Cedex, France

^* Tel.: +33 1 49 81 25 51; fax: +33 1 49 81 25 52 (Email: daniel.loisance@wanadoo.fr).

The first 20% of the full text of this article appears below.

During the winter 1984, I received a call from Hans Wallsten, a Swedish engineer, retired in Switzerland, who had recently started a company (Medinvent) to develop new tools based on the concept of the ‘Chinese glove’: the longitudinal traction on the glove reduces the diameter of an expandable cylindric mesh, allowing a stronger prehension of the finger, permitting the progressive reduction of fractures (Fig. 1 ). Releasing the traction enlarges the diameter of the cylindric mesh, releasing then the radial forces. Based on this concept, a self-expandable intravascular coil was manufactured, first with metal wires, then with a polyester fabric. It could be bare, or covered by a silicone or polyurethane lining. S. Gogolewski, a creative polyurethan specialist was associated to the program. Deployment tools, based on the Swiss know-how in fine engineering, were designed and manufactured to permit a percutaneous introduction and the correct deployment of the coil.

View larger version (51K): [in this window] [in a new window]   Fig. 1. Drawings of the stents in the patent application.

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