US Patent No. 10,456,519

APPARATUS AND METHOD FOR IRRIGATING SINUS CAVITY


Patent No. 10,456,519
Issue Date October 29, 2019
Title Apparatus And Method For Irrigating Sinus Cavity
Inventorship Don Q. Ngo-Chu, Irvine, CA (US)
Assignee Acclarent, Inc., Irvine, CA (US)

Claim of US Patent No. 10,456,519

1. A device comprising a catheter having a proximal end and a distal end, wherein at least a portion of the catheter is sized to pass through a nasal cavity and through a sinus ostium to enter a paranasal sinus cavity, the catheter comprising:(i) a dilator disposed at the distal end, wherein the dilator is configured to transition between a non-expanded configuration and an expanded configuration, wherein the dilator is configured to fit the ostium in the non-expanded configuration, and wherein the dilator is configured to dilate the ostium in the expanded configuration,
(ii) an occluding balloon disposed at the distal end, wherein the occluding balloon is configured to transition between a non-expanded configuration and an expanded configuration, wherein the occluding balloon is configured to fit in the ostium in the non-expanded configuration, and wherein the occluding balloon is configured to sealingly engage the ostium in the expanded configuration while the dilator is in the non-expanded configuration,
(iii) a plurality of irrigation ports disposed in a sidewall at the distal end, wherein the occluding balloon is located proximal to the irrigation ports,
(iv) a suction port disposed on a distal face of the distal end, proximate to the irrigation ports, wherein the occluding balloon is located proximal to the suction port, and
(v) a plurality of lumens, the plurality of lumens including:
(i) a first lumen in fluid communication with the dilator,
(ii) a second lumen in fluid communication with the occluding balloon,
(iii) a third lumen in fluid communication with the irrigation ports, and
(iv) a fourth lumen in fluid communication with the suction port,
wherein the first, second, third, and fourth lumens are in fluid isolation relative to each other.