Sinus Stent And Systems And Methods Of Deploying A Stent Within The Sinus Of A Patient

A disposable cartridge assembly for stenting a frontal sinus cavity with an applicator device, the disposable cartridge assembly comprising:

• a stent comprising:
• a flexible foam layer having a porosity of greater than 80%, the flexible foam layer comprising a polyurethane including amorphous segments, and crystalline segments formed via hydrogen bonding;
• an active agent within the flexible foam layer;
• a flexible film layer arranged in a stacked configuration and comprising a polymer which is structured to hydrogen bond with the crystalline segments of the flexible foam layer at a bond interface, wherein the flexible foam layer and the flexible film layer are configured to be furled to assume a cylindrical profile prior to insertion within the frontal sinus cavity such that the flexible foam layer at least partially defines an outer annular aspect of the stent and the flexible film layer at least partially defines an inner annular aspect of the stent;
• a tubular sheath comprising at least one sidewall defining a proximal end, a distal end opposite the proximal end, and a lumen extending between the proximal and distal ends and defining a sheath volume sized to receive an entirety of the furled stent between the proximal and distal ends;
• a cap portion coupled to the proximal end of the tubular sheath and comprising:
• a cap body defining an aperture in communication with the lumen of the tubular sheath with the aperture sized to receive a plunger element of the applicator device;
• a lip extending outwardly from the cap body to define a surface configured to abut a distal end of the applicator device when the disposable cartridge is coupled with the applicator device;
• and
• coupling features disposed on the cap body with the coupling features configured to removably engage complimentary coupling features of the applicator device.

A system for stenting a frontal sinus cavity, the system comprising:

• an applicator device comprising a housing defining a bore and adapted to be grasped with a single hand of a user, an actuator, and a drive member coupled to the actuator and with the drive member configured to be moved within the bore in response to one or both of the housing and the actuator receiving an input from the user;
• a disposable cartridge removably coupled to the housing and comprising a tubular sheath defining a lumen, and a cap portion coupled to the tubular sheath and removably coupled to the housing of the applicator device;
• and
• a stent comprising:
• a flexible foam layer having a porosity of greater than 80%, the flexible foam layer comprising a polyurethane including amorphous segments, and crystalline segments formed via hydrogen bonding;
• a flexible film layer arranged in a stacked configuration and comprising a polymer which is structured to hydrogen bond with the crystalline segments of the flexible foam layer at a bond interface;
• and
• an active agent within the flexible foam layer,
• wherein the stent is configured to be furled and inserted within the tubular sheath, the flexible film layer having a resilience sufficient to unfurl the stent when positioned in an unrestricted state in the frontal sinus cavity.