Patent ID: 7691137
Filing Date: 2010-04-06
Classification: A61F,A61M

Abstract:
1. A medical device comprising: a catheter, the catheter having a catheter shaft and a medical balloon positioned thereon, the balloon being expandable from an pre-expansion state to an expanded state; a primary guidewire, wherein the catheter shaft defines a primary guidewire lumen for passage of the primary guidewire therethrough; a secondary guidewire; a rotatable assembly, the rotatable assembly comprising a sheath, the sheath being disposed about the balloon in both the pre-expansion state and in the expanded state, the sheath being rotatable about the balloon in the pre-expansion state, the sheath comprising an inner layer and an outer layer, the inner layer being in rotatable contact with the balloon, the outer layer being disposed about the inner layer, the inner layer being at least partially constructed of at least one material having a durometer value greater than that of the outer layer, wherein the sheath is longitudinally fixed relative to the balloon in the pre-expansion state; and a secondary guidewire housing defining a lumen for passage of the secondary guidewire therethrough, wherein the secondary guidewire is moveable relative to the lumen of the secondary guidewire housing, at least a portion of the secondary guidewire housing being fixedly engaged to an exterior portion of the sheath.