Introducer with expandable capabilities

An introducer sheath, comprising:

• a tubular member including a longitudinal axis, an inner surface, an outer surface defining a circular outer profile, and a wall extending therebetween;
• and
• a plurality of spine members;
• wherein each of the plurality of spine members are positioned radially inward of the outer surface of the tubular member;
• wherein each of the plurality of spine members are positioned radially outward of the inner surface of the tubular member;
• wherein the tubular member is designed to shift from a first configuration to a second configuration;
• wherein the wall has a first thickness in the first configuration and a second thickness in the second configuration,
• wherein the second thickness is smaller than the first thickness,
• wherein the wall has a third thickness in the second configuration,
• wherein the third thickness is located between adjacent spine members,
• wherein each of the plurality of spine members is positioned within the second thickness of the wall in the second configuration, and,
• wherein the third thickness is smaller than the second thickness.