Method and apparatus for forming vascular prostheses

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/04 (2006.01) A61F 2/06 (2006.01) A61L 27/36 (2006.01) A61F 2/00 (2006.01) A61F 2/02 (2006.01)

Patent

CA 2240989

A vascular prosthesis (10) comprises pericardial, fascial, or other tissue (12) formed over a tubular support frame. A first exemplary tubular support frame comprises an inner helical member (16) and an outer helical member (14), where the tissue is rolled and captured therebetween. A second exemplary tubular support frame (60, 62) comprises a plurality of ring elements (64, 72) which are located alternately on the outside and on the inside of the rolled tissue. Other exemplary frames employ fasteners (84, 98) for penetrating the rolled tissue and attaching tissue to frame elements. The tissue is preferably obtained from the patient who is to receive the vascular prosthesis, with the tissue being mounted over the frame immediately prior to use.

L'invention concerne une prothèse vasculaire (10) constituée de tissus péricardique, facial ou autre (12) mis en forme sur un châssis de support tubulaire. Un premier exemple de ce châssis comprend une pièce hélicoïdale interne (16) et une pièce hélicoïdale externe (14), le tissu étant enroulé et maintenu entre ces pièces. Un deuxième exemple de ce type de châssis (60, 62) comprend une pluralité d'éléments annulaires (64, 72) situés alternativement à l'extérieur et à l'intérieur du tissu enroulé. D'autres exemples de châssis de soutien sont décrits, avec des éléments d'ancrage (84, 98) qui pénètrent dans le tissu enroulé et maintiennent le tissu attaché aux éléments du châssis. De préférence, le tissu est prélevé sur le patient qui doit recevoir la prothèse vasculaire, et il est mis en place sur le châssis immédiatement avant l'utilisation opérationnelle.

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