Patent ID: 7811303
Filing Date: 2010-10-12
Classification: A61B

Abstract:
1. A dilation system for dilating bodily tissue, the dilation system comprising: an elongate first dilator comprising a tubular body having an exterior surface extending between a proximal end and an opposing distal insertion end, the body also having an interior surface bounding a passageway extending between the proximal end and the distal insertion end; a first mating member formed on the exterior surface of the first dilator at the distal insertion end; and an elongate second dilator comprising a tubular body having an exterior surface extending between a proximal end and an opposing distal insertion end, the body also having an interior surface bounding a passageway extending between the proximal end and the distal insertion end, the passageway of the second dilator being configured to receive the tubular body of the first dilator, the second dilator mechanically engaging with the first mating member such that the second dilator is forced to travel along a fixed path that prevents free rotation of the second dilator relative to the first dilator while at least a portion of the second dilator is being advanced over the first dilator, wherein the distal insertion end of the first dilator and the second dilator each terminate at a distal terminus, the second dilator mechanically disengaging from the first dilator when the distal terminus of the second dilator is at least substantially aligned with the distal terminus of the first dilator such that the second dilator is free to rotate about the first dilator.