Patent ID: 8961398
Filing Date: 2015-02-24
Classification: A61B,A61M

Abstract:
1. A method for enlarging an ostium of a paranasal sinus, the method comprising: (a) inserting an endoscopic guide system into a nasal cavity or paranasal sinus, wherein the endoscopic guide system comprises: (b) advancing the distal end of the tubular guide within the nasal cavity or paranasal sinus toward the ostium while viewing the tubular guide using the endoscope by maintaining an outer surface of the tubular guide within a field of view of the endoscope; (c) rotating the tubular guide relative to the endoscope and within the nasal cavity or paranasal sinus, about a longitudinal axis defined by the tubular guide, to thereby orient the distal opening of the distal tip toward the ostium; (d) advancing a balloon dilatation catheter though the lumen of the tubular guide and over a guidewire to position a balloon of the catheter in the ostium; and (e) inflating the balloon to enlarge the ostium.