Introducer sheath systems and methods

An introducer sheath system, comprising:

• a tubular sheath;
• a hub assembly connected to a proximal end of the tubular sheath, the hub assembly including a primary port and a secondary port;
• a dilator extending through the primary port, the hub assembly and the tubular sheath;
• the hub assembly including a housing and a hemostatic valve disposed therein;
• the hemostatic valve comprising a rigid valve body and a collapsible member, wherein the collapsible member closes when a space between the collapsible member and the rigid valve body is pressurized;
• a pressure regulator connected to the hub assembly and in fluid communication with the space between the collapsible member and the rigid valve body;
• and
• a sealed chamber including a closed-cell foam defined by the pressure regulator, the sealed chamber having an interior, wherein the interior of the sealed chamber is fluidly isolated from the space between the collapsible member and the rigid valve body.

An introducer sheath, comprising:

• a tubular sheath;
• a hub assembly connected to a proximal end of the tubular sheath;
• the hub assembly including a housing and a hemostatic valve disposed therein;
• a pressure regulator connected to the hub assembly and in fluid communication with the hemostatic valve;
• and
• a sealed chamber including a closed-cell foam defined by the pressure regulator, the sealed chamber having an interior, wherein the interior of the sealed chamber is filled with a gas that is fluidly isolated from the hemostatic valve.