Implanted tube and external interface for saline or drug delivery to the paranasal sinuses

A system for delivery of a therapeutic substance to a user's sinus cavity comprising:

• an implantable tube having a first branch configured to extend into an ethmoidal sinus cavity of the user and the implantable tube also having a second branch configured to extend into a maxillary sinus cavity of the user, wherein the first and second branches of the implantable tube are further configured to transmit the therapeutic substance to the user's sinus cavity;
• an external delivery component having a reservoir coupled to a delivery tube configured to extend into the user's nasal passage, wherein the external delivery component is configured to deliver the therapeutic substance through the delivery tube and into the implantable tube for delivery into the user's sinus cavity;
• and
• an interface between the implantable tube and the external delivery component configured to guide and lock the implantable tube to the external delivery component.

A method for delivery of a therapeutic substance to a user's sinus cavity comprising:

• delivery of an implantable tube to the user's sinus cavity using a delivery catheter;
• deploying the implantable tube into the user's sinus cavity;
• coupling the implantable tube to an external delivery component filled with the therapeutic substance;
• locking the implantable tube to the external delivery component;
• dispensing the therapeutic agent from the external delivery device through the implantable tube to the user's sinus cavity;
• and
• uncoupling the external delivery device from the implantable tube.