Atherectomy, angioplasty and stent method and apparatus

A - Human Necessities – 61 – M

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Details

A61M 29/00 (2006.01) A61B 17/22 (2006.01) A61F 2/06 (2006.01) A61B 17/32 (2006.01)

Patent

CA 2233567

An atherectomy device for treating obstructions in vessels or small openings in the body, comprising a rotatable ablator tip (16) which is guided to the obstruction in a reduced diameter configuration, expanded and rotated to remove the obstruction, and contracted to remove the device from the body. The atherectomy device may be combined with a balloon (240) angioplasty device employing either a fixed or variable diameter rotatable abrasive burr and an angioplasty balloon (240) disposed on the distal end of the catheter (14) proximal to the atherectomy device. The atherectomy device may also be combined with a stent (230) implantation device employing either a fixed or variable diameter rotatable abrasive burr and a stent (230) with balloon catheter disposed on the distal end of its catheter (14) proximal to the atherectomy device.

L'invention se rapporte à un dispositif d'athérectomie servant à traiter les obstructions des vaisseaux ou des petits orifices du corps humain et comprenant une extrémité d'ablation rotative (16) qui est guidée vers l'obstruction, cette extrémité présentant un diamètre réduit, puis dilatée et mise en rotation afin de retirer l'obstruction, et qui est rétractée pour retirer le dispositif du corps. Ce dispositif d'athérectomie peut être combiné à un dispositif d'angioplastie à ballonnet (240) mettant en oeuvre une fraise abrasive rotative à diamètre fixe ou variable et un ballonnet d'angioplastie (240) placé sur l'extrémité distale du cathéter (14) proche du dispositif d'athérectomie. Le dispositif d'athérectomie peut être également combiné à un dispositif d'implantation d'extenseur (230) mettant en ouvre une fraise abrasive rotative à diamètre fixe ou variable et un extenseur (230) doté d'un cathéter à ballonnet placé sur l'extrémité distale du cathéter (14) proche du dispositif d'athérectomie.

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