Expandable introducer sheath to preserve guidewire access

摘要

An introducer sheath. The introducer sheath includes a tubular body. The tubular body extends from a distal end toward a proximal end. The tubular body includes a lumen. The lumen is defined at least partially by a wall. The tubular body includes a secondary channel. The secondary channel is disposed within the wall. The secondary channel is configured to receive a guidewire.

主权项

1. An introducer sheath comprising:
a tubular body extending from a distal end to a proximal end, the tubular body having a substantially non-circular outer cross-section that includes only one axis of symmetry, the tubular body, along its length, comprising:
a device receiving lumen defined at least partially by an exterior wall of the tubular body;a secondary channel disposed within and defined at least partially by another portion of the exterior wall; anda first deformable expandable portion formed in and extending from an exterior surface of the exterior wall through the exterior wall the device receiving lumen and forming a portion of the device receiving lumen, the first deformable expandable portion having two preferentially deformable and separable overlapping portions, each overlapping portion extending from a first side of the tubular body on one side of the one axis of symmetry to a second side of the tubular body on an opposite side of the one axis of symmetry from the one side, each overlapping portion having a base on the one side of the tubular body and a free, unattached end on the opposite side, the overlapping portions being separatable to form an aperture extending from the exterior surface of the exterior wall through to the device receiving lumen.