Device for removal of intraluminal occlusions

Details Device for removal of intraluminal occlusions Device for removal of intraluminal occlusions

A - Human Necessities

61

B

A61B 17/22 (2006.01) A61B 17/00 (2006.01) A61B 17/32 (2006.01)

Patent

CA 2162881

This invention is a method and device for removal of intra-luminal occlusions which includes a catheter having a cutting head (16) in a distal end thereof. The cutting head (16), undergoes a simultaneous longitudinal and rotational movement by means of fluid pressure applied to a distal piston (7) to which the cutting head (16) is attached. The proximal end of the catheter includes a reciprocating pump (53) which applies the fluid pressure to the distal piston. The cutting head (16) is retractable to a sheathed or retracted position during insertion and movement in a patient. Material removed by the cutting head can either be collected in a chamber located between the distal piston and the cutting head or aspirated through the proximal end of the catheter.

Cette invention concerne une méthode pour enlever les occlusions endoluminales. Le dispositif utilisé comporte un cathéter ayant une tête coupante (16) à son extrémité distale. La tête coupante (16) subit simultanément un mouvement longitudinal et de rotation par l'effet de la pression d'un fluide appliquée à un piston distal (7) auquel la tête coupante (16) est fixée. A l'extrémité proximale du cathéter se trouve une pompe (53) à piston alternatif qui applique via le fluide une pression sur le piston distal. La tête coupante (16) peut être rétractée dans une position protégée ou de retrait pendant son insertion et son mouvement dans un patient. Les débris provenant de la tête coupante peuvent être recueillis dans une chambre située entre le piston distal et la tête coupante ou être aspirés par l'extrémité proximale du cathéter.

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