Biopolymer sponge tubes

Details Biopolymer sponge tubes Biopolymer sponge tubes

A - Human Necessities

61

B

A61B 17/03 (2006.01) A61B 17/064 (2006.01) A61B 17/068 (2006.01)

Patent

CA 2249788

The invention provides biopolymer sponge tubes closed at one end for use in surgery. The preferred biopolymer is collagen. The biopolymer sponge tubes are prepared by forming an aqueous dispersion of the biopolymer, introducing the dispersion into tube-shaped moulds, freezing the dispersion in the moulds to form a shaped, aqueous dispersion, followed by freeze-drying the frozen aqueous dispersion. The tubes are fitted over endoscopic surgical staplers to provide improved sealing of stapled tissues, especially for air-tight sealing in lung resections.

L'invention concerne des tubes en éponge biopolymère, fermés à une extrémité, destinés à être utilisés en chirurgie. Le biopolymère employé de préférence est le collagène. Pour fabriquer les tubes en éponge biopolymère, on prépare une dispersion aqueuse du biopolymère, on la verse dans des moules en forme de tube, puis on la congèle dans ces moules afin qu'elle en conserve la forme, et enfin, on la lyophilise. Les tubes ainsi obtenus sont montés sur des pinces agrafeuses employées en chirurgie endoscopique; ils sont destinés à former des sutures plus hermétiques, surtout dans le cas des résections du poumon.

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