Disclosed herein are introducer sheaths and methods of using the same. The sheaths (40) minimize trauma to the patient's vasculature by including an introducer (100) sized and configured to be received within an expandable sheath. The
system includes a
coupling mechanism (200) for releasably
coupling the introducer to the expandable sheath. Engaging the
coupling mechanism allows the expandable sheath to move from a first configuration, in which the expandable sheath has a first outer
diameter, to a collapsed / narrowed configuration in which the expandable sheath has a second, smaller, outer
diameter due to the axially directed force exerted on the expandable sheath by the introducer and / or coupling mechanism as the introducer is advanced within the central lumen of the expandable sheath.