Method of making a medical device having a thin wall tubular...

Details Method of making a medical device having a thin wall tubular... Method of making a medical device having a thin wall tubular...

A - Human Necessities

61

F

A61F 2/06 (2006.01) A61F 2/24 (2006.01)

Patent

CA 2485285

The present invention relates to a medical device and method for making the medical device. In particular, the present invention relates to membrane covered structural frame, and to a method of forming a tubular membrane on a structural frame. In one aspect, a polymeric tube is provided having a first diameter and a first tube wall thickness. A radially expandable and contractible structural frame is radially contracted, and inserted into at least a portion of the structural frame. The radially contracted structural frame then expands to expand the polymeric tube to a second diameter, wherein the second diameter is greater than the first diameter. As the polymeric tube radially expands, the tube wall thickness becomes thinner, so that the polymeric tube becomes a thin walled tubular membrane. The polymeric tube and structural frame are then mechanically attached to each other.

L'invention concerne un dispositif médical et un procédé de fabrication de celui-ci. Elle concerne en particulier un support structural recouvert d'une membrane, et un procédé de formation de membrane tubulaire sur un support structural. Dans un aspect de l'invention, un tube polymère prévu présente un premier diamètre et une première épaisseur de paroi de tube. Un support structural, qui peut se déployer et se contracter radialement, est contracté radialement et inséré dans au moins une partie du support structural. Le support structural radialement contracté se déploie ensuite pour déployer le tube polymère à un deuxième diamètre, supérieur au premier. A mesure que le tube polymère se déploie, l'épaisseur de la paroi du tube s'amincit, de sorte que le tube polymère devient une membrane tubulaire à paroi mince. Le tube polymère et le support structural sont ensuite attachés mécaniquement entre eux.

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