Method for treating naturally obstructed paranasal sinuses

1. A method of treating a patient's paranasal sinus having an obstructed or narrowed naturally occurring bony and mucosal ostium or duct which does not have scar tissue or granulation tissue, the method comprising:

pushing a distal segment of a balloon catheter through the obstructed or narrowed naturally occurring bony and mucosal ostium or duct which does not have scar tissue or granulation tissue;

inflating a balloon of the balloon catheter in the obstructed or narrowed naturally occurring bony and mucosal ostium or duct which does not have scar tissue or granulation tissue to enlarge the naturally occurring bony and mucosal ostium or duct, the bony and mucosal ostium or duct being enlarged when the balloon is inflated; and

removing the balloon catheter from the now enlarged ostium or duct, which remains enlarged for a period of time effective to treat the obstructed ostium after the balloon catheter is removed.

2. The method of claim 1 , further comprising:

performing an ethmoidectomy.

3. The method of claim 1 , further comprising:

shifting a proximal segment of the balloon catheter to position the distal segment to enter from the patient's nasal cavity into the obstructed or narrowed naturally occurring ostium or duct which does not have scar tissue or granulation tissue.

4. The method of claim 1 , further comprising:

rotating a proximal segment of the balloon catheter to position the distal segment to enter from the patient's nasal cavity into the obstructed or narrowed naturally occurring ostium or duct which does not have scar tissue or granulation tissue.

5. The method of claim 1 , wherein the balloon catheter has sufficient stiffness and column strength that the distal segment can be pushed through the obstructed or narrowed naturally occurring ostium or duct which does not have scar tissue or granulation tissue.

6. The method of claim 1 , wherein the distal segment of the balloon catheter is at an angle of between about seventy degrees and about one hundred fifteen degrees to a proximal segment of the balloon catheter.

7. The method of claim 6 , wherein the angle is about ninety degrees.

8. The method of claim 1 , further comprising:

selecting the balloon catheter such that the distal segment, when the balloon is deflated, will fit snugly with the obstructed or narrowed naturally occurring ostium or duct which does not have scar tissue or granulation tissue.

9. The method of claim 1 , further comprising:

medially retracting the patient's middle turbinate.

10. The method of claim 1 , further comprising:

removing part of the patient's uncinate process.

11. The method of claim 1 , further comprising:

inflating the balloon to about nine atmospheres.

12. The method of claim 1 , further comprising:

deflating the balloon;

repositioning the balloon after said deflating; and,

inflating the balloon after said repositioning.

13. The method of claim 1 , wherein the distal segment of the balloon catheter is at an angle of between about one hundred thirty degrees and about one hundred eighty degrees to a proximal segment of the balloon catheter.

14. The method of claim 13 , wherein the angle is about one hundred eighty degrees.

15. The method of claim 1 , wherein the obstructed or narrowed naturally occurring ostium or duct which does not have scar tissue or granulation tissue is a nasofrontal duct.

16. The method of claim 1 , further comprising:

creating a prepared opening in a wall of the patient's paranasal sinus.

17. The method of claim 16 , further comprising:

pushing the distal segment of the balloon catheter through the prepared opening.

18. The method of claim 1 , further comprising:

inflating the balloon of the balloon catheter in an infundibulum.