Balloon dilation catheter for use in sinus passageways

A balloon dilation catheter for use in a sinus or sinus drainage pathway comprising:

• a handle configured to be gripped by an operator;
• an inner guide member extending longitudinally from the handle in a distal direction, the inner guide member formed from a substantially rigid metallic hypotube defining a first lumen, the substantially rigid metallic hypotube having a blunt distal end and a proximal end secured within the handle;
• a shaft slidably arranged over the inner guide member, wherein a distal portion of the shaft includes an inflatable balloon;
• a moveable shaft advancing member disposed in the handle and coupled to the shaft, the moveable shaft advancing member configured to be manipulated by a thumb of an operator of the balloon dilation catheter to advance the shaft over the inner guide member from a retracted state to an extended state;
• and
• wherein a length of the inner guide member projects distally from a distal-most portion of the inflatable balloon within the range of about 0.5 inch to about 2.0 inch in the retracted state.