FEATURES TO ENHANCE GRIP OF BALLOON WITHIN AIRWAY

摘要

A dilation assembly (8) includes a shaft (12) and a dilator (18, 118, 218, 318, 418, 518, 618, 718, 818, 918, 1018, 118) coupled with the distal end of the shaft. The dilator includes a proximal end, a distal end, and a center portion positioned between the proximal end and the distal end. The center portion dilates from a first configuration to a second configuration. The center portion has a larger diameter than the proximal end and the distal end when the center portion is in the second configuration. At least one gripping feature (126, 226, 326, 426, 526, 626, 726, 826) is positioned on at least a portion of the exterior surface of the center portion. The gripping feature provides friction between the center portion and a bodily lumen when the center portion is in the second configuration.