Trocars with advanced fixation

A - Human Necessities – 61 – B

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A61B 17/34 (2006.01)

Patent

CA 2632176

A trocar fixation device includes a cannula and an elongate tube mounted onto and coupled to the exterior surface of the cannula with the distal end of the cannula extending distally beyond the distal end of the elongate tube. The elongate tube includes a plurality of slits cut at an angle to a longitudinal axis of the elongate tube. The trocar fixation device is activated by rotating the proximal-end region of the elongate tube in a first direction and is deactivated by rotating the proximal-end region of the elongate tube in a second direction, opposite to the first direction . Activation of the trocar fixation device compresses the material positioned between adjacent slits and forces the material radially outwardly, away from the exterior surface of the cannula, thereby forming ridges. Deactivation of the trocar fixation device returns the exterior surface of the elongate tube to a substantially smooth condition.

Un dispositif de fixation de trocart contient une canule et un tube allongé monté sur et couplé à la surface extérieure de la canule, l~extrémité distale de la canule s~étendant distalement au-delà de l~extrémité distale du tube allongé. Le tube allongé comprend une pluralité de fentes découpées selon un angle donné par rapport à un axe longitudinal du tube allongé. Le dispositif de fixation de trocart est activé par rotation de la région d~extrémité proximale du tube allongé dans une première direction et est désactivé par rotation de la région d~extrémité proximale du tube allongé dans une seconde direction, opposée à la première direction. L~activation du dispositif de fixation de trocart comprime le matériau positionné entre des fentes adjacentes et repousse le matériau radialement vers l~extérieur, en l~écartant de la surface extérieure de la canule, pour former ainsi des crêtes. La désactivation du dispositif de fixation de trocart ramène la surface extérieure du tube allongé dans une condition sensiblement lisse.

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