Abstract: An expandable introducer includes a hub having a distal end and a proximal end, and a sheath coupled to the hub and extending distally therefrom, the sheath defining a central lumen. The sheath is configured to radially expand from a radially unexpanded, folded state having a first diameter and to a radially expanded, unfolded state having a second diameter larger than the first diameter in response to a device passing through the central lumen. A wall of the sheath includes a thick wall region having a first wall thickness and a thin wall region having a second wall thickness smaller than the first wall thickness, wherein the thick wall region includes a coil embedded within the wall of the sheath.

Abstract: An advancer includes an advancer hub and an advancer shaft extending distally from the advancer hub. The advancer shaft includes a proximal end, a distal end, and a lumen extending from the proximal end to the distal end. The advancer shaft is configured to be disposed around an outer shaft of a delivery catheter, and includes a split line configured to enable splitting the shaft to enable removal of the shaft from the outer shaft. The advancer hub configured to be mounted on the outer shaft of the delivery catheter, and includes a parting line to enable splitting of the advancer hub.

Abstract: A prosthetic valve delivery assembly includes a dilator including a first tapered region extending along a dilator axis. The first tapered region includes a tapered shape with a first diameter at a distal end and a second diameter at a first central end. The second diameter is greater than the first diameter. A central region includes the second diameter that is substantially constant along a central length of the central region. A second tapered region includes a tapered shape with the second diameter at the second central end and a third diameter at a third central end. The third diameter is less than the second diameter. A proximal shaft region extends from the third central end. The proximal shaft region includes the third diameter such that a difference between the second diameter and the third diameter is within a French gauge range from about 3 Fr to about 5 Fr.