Method and apparatus to prevent esophageal damage

1. A method of adjusting the curvature of the esophagus of a human being during a therapeutic procedure in a treatment area outside of the esophagus, comprising:

positioning within the esophagus an elongate body having a distal tip, a controlled curvature section having a length that is less than the length of the thoracic portion of the esophagus, a first flexible section proximal to the controlled curvature section, a second flexible section distal to the controlled curvature section, and a telescoping section distal to the controlled curvature section;

anchoring a distal portion of the telescoping section within the esophagus;

withdrawing the controlled curvature section proximally to extend the telescoping section from within the second flexible section to place at least a portion of the controlled curvature section within the thoracic esophagus; and

adjustably controlling the curvature of the controlled curvature section to increase the distance between the esophagus and a treatment area outside of the esophagus without adjustably controlling the curvature of the first flexible section and second flexible section.

2. The method of adjusting the curvature of the esophagus according to claim 1 further comprising: engaging the interior wall of the esophagus with the outer wall of the controlled curvature section.

3. The method of adjusting the curvature of the esophagus according to claim 1 further comprising: cooling the interior wall of the esophagus with the controlled curvature section.

4. The method of adjusting the curvature of the esophagus according to claim 1 , the anchoring the distal portion of the telescoping section within the esophagus step comprising: positioning a bulb on the telescoping section within the esophageal sphincter.

5. The method of adjusting the curvature of the esophagus according to claim 4 wherein positioning a bulb into the esophageal sphincter comprises: deploying the bulb to engage with the esophageal sphincter.

6. The method of adjusting the curvature of the esophagus according to claim 1 the adjustably controlling step further comprising: increasing the distance between the esophagus and an ablation site.

7. The method of adjusting the curvature of the esophagus according to claim 1 the adjustably controlling step further comprising: creating an anterior posterior curvature within the esophagus.

8. The method of adjusting the curvature of the esophagus according to claim 1 the adjustably controlling step further comprising: creating a lateral medial curvature within the esophagus.

9. The method of adjusting the curvature of the esophagus according to claim 1 the adjustably controlling step further comprising: controlling the curvature of the controlled curvature section by adjusting a mechanism on a handle attached to the elongate body.

10. The method of adjusting the curvature of the esophagus according to claim 1 the adjustably controlling step further comprising: using a locking device to lock the position of the controlled curvature section.

11. The method of adjusting the curvature of the esophagus according to claim 1 the adjustably controlling step further comprising: controlling the curvature of the controlled curvature section by adjusting a bendable element disposed within the controlled curvature section.

12. The method of claim 1 , wherein the controlled curvature section is configured to assume a plurality of different curvatures, and wherein adjustably controlling the curvature comprises adjusting the curvature to one curvature of the plurality of different curvatures.