Systems and Methods for Sinus Access

Abstract

This application is generally related to systems and methods for accessing the paranasal sinuses and other passages of the nose, ear, and throat. The systems and methods generally employ devices capable of maintaining a fixed handle orientation with respect to the patient while generating the appropriate applicator deflection angle required to rotationally align or orient the applicator tip to the intended target tissue/anatomy for treatment. Methods are also described for deploying drug delivery devices within these body structures using the systems to treat medical conditions associated therewith.

1 - 20 . (canceled) 
     
     
         21 . An inflation and deflation device comprising:
 a housing;   a syringe barrel, having a fluid connection port, the fluid connection port configured to be in fluid communication with a second fluid connection port on a second device;   a plunger arranged to reversibly move a length within the syringe barrel; and   a locking mechanism configured to limit the length the plunger can depress within the syringe barrel.   
     
     
         22 . The device of claim  1 , wherein the locking mechanism comprises a pair of pawls configured to extend outward and physically interface with the housing. 
     
     
         23 . The device of claim  1 , wherein the second device is an applicator device comprising an expandable member. 
     
     
         24 . The device of claim  1 , wherein the syringe barrel comprises a window for visualizing a fluid in the syringe barrel. 
     
     
         25 . The device of claim  1 , wherein the locking mechanism comprises a mechanism for providing haptic feedback to a user to stop depressing the plunger. 
     
     
         26 . The device of claim  1 , wherein the locking mechanism comprises a mechanism for providing a click to indicate to a user to stop depressing the plunger. 
     
     
         27 . The device of claim  3 , wherein the device is configured to deliver fluid to expand the expandable member of the applicator device at a force of from about two atmospheres to about 16 atmospheres. 
     
     
         28 . The device of claim  3 , wherein the device is configured to deliver fluid to expand the expandable member of the applicator device at a force of from about two atmospheres to about 16 atmospheres.