Patent ID: 8512369
Filing Date: 2013-08-20
Classification: A61F,A61M

Abstract:
1. A combined rolling membrane-balloon catheter capable of expanding stenoses in bodily vessels, comprising: an outer shaft; and an inner shaft which is axially displaceable therein; an intermediate shaft situated between the inner and outer shafts which is likewise axially displaceable; a rolling membrane which is attached in a pressure-tight manner between a distal end of the outer shaft and a distal end of the inner shaft, and which may be displaced between a passive position within the outer shaft and an active position which is distally expanded from the outer shaft by the action of pressure; and a dilatable balloon which is attached in a pressure-tight manner between the distal end of the inner shaft and a distal end of the intermediate shaft, and which may be displaced between a passive position within the outer shaft and proximally in front of the rolling membrane, and an active position which is distally expanded from the outer shaft, within the rolling membrane, by the action of pressure.