Methods and devices to treat nasal airways
Methods and devices for treating nasal airways are provided. Such devices and methods may improve airflow through an internal and/or external nasal valve, and comprise the use of mechanical re-shaping, energy application and other treatments to modify the shape, structure, and/or air flow characteristics of an internal nasal valve, an external nasal valve or other nasal airways.
1. A method of reshaping a nasal airway of a nose, the method comprising:
applying mechanical pressure to a nasal wall from inside a nostril with a reshaping element, to reshape a portion the nasal airway;
inserting multiple radiofrequency needle electrodes of a treatment element through an external skin surface of the nose into nasal tissue adjacent the reshaped portion of the nasal airway; and
applying radiofrequency energy to the nasal tissue by activating the multiple radiofrequency needle electrodes.
2. The method of claim 1 , wherein the reshaping element comprises a convex surface to reshape the portion of the nasal airway in a concave shape.
3. The method of claim 1 , wherein a portion of each of the multiple radiofrequency needle electrodes is coated with an insulating material.
4. The method of claim 1 , wherein the multiple radiofrequency needle electrodes comprise an array of electrodes disposed along a surface of the treatment element.
5. The method of claim 1 , wherein the multiple radiofrequency needle electrodes comprise bipolar electrodes.
6. The method of claim 1 , wherein the multiple radiofrequency needle electrodes comprise monopolar electrodes.
7. The method of claim 1 , wherein applying the radiofrequency energy comprises applying the radiofrequency energy for a time period of between 15 seconds and 1 minute.
8. The method of claim 1 , wherein applying the radiofrequency energy comprises:
using at least one of the multiple radiofrequency needle electrodes as an active electrode; and
using a remainder of the multiple radiofrequency needle electrodes as return electrodes.
9. The method of claim 8 , further comprising switching which of the multiple radiofrequency needle electrodes is used as the active electrode.
10. The method of claim 1 , wherein applying the radiofrequency energy comprises:
using at least one of the multiple radiofrequency needle electrodes as an active electrode; and
using a surface electrode applied to the external skin surface as a return electrode.
11. The method of claim 1 , wherein applying the radiofrequency energy comprises applying the radiofrequency energy in multiple zones, wherein each of the multiple zones corresponds to one of the multiple radiofrequency needle electrodes, and wherein each of the multiple zones is smaller than a distance between adjacent ones of the multiple radiofrequency needle electrodes.
12. The method of claim 1 , further comprising:
measuring at least one parameter during application of the radiofrequency energy, the at least one parameter being selected from the group consisting of radiofrequency current, radiofrequency voltage, radiofrequency power, and tissue impedance; and
adjusting an amount of radiofrequency energy applied to the nasal tissue, at least in part based on the at least one measured parameter.
13. The method of claim 1 , further comprising cooling at least one of nasal mucosa or the external skin surface while applying the radiofrequency energy.
14. The method of claim 1 , wherein applying the radiofrequency energy heats the nasal tissue to a temperature in a range from 50 degrees Celsius to 70 degrees Celsius.
15. The method of claim 1 , further comprising:
measuring a temperature of at least one of the external skin surface or nasal mucosa while applying the radiofrequency energy; and
adjusting an amount of the radiofrequency energy applied, at least in part due to the temperature.
16. A device for reshaping a nasal airway of a nose, the device comprising:
a reshaping element configured to be inserted into a nostril and apply pressure to a nasal wall to reshape a portion the nasal airway;
a treatment element comprising multiple radiofrequency needle electrodes configured to be inserted through an external skin surface of the nose into nasal tissue adjacent the reshaped portion of the nasal airway;
at least a first shaft coupled with the treatment element; and
a handle coupled with the first shaft.
17. The device of claim 16 , wherein the reshaping element comprises a convex surface to reshape the portion of the nasal airway in a concave shape.
18. The device of claim 16 , wherein a portion of each of the multiple radiofrequency needle electrodes is coated with an insulating material.
19. The device of claim 16 , wherein the multiple radiofrequency needle electrodes comprise an array of electrodes disposed along a surface of the treatment element.
20. The device of claim 16 , wherein the multiple radiofrequency needle electrodes comprise bipolar electrodes.
21. The device of claim 16 , wherein the multiple radiofrequency needle electrodes comprise monopolar electrodes.
22. The device of claim 16 , further comprising a second shaft coupled with the reshaping element.
23. The device of claim 22 , wherein the first shaft and the second shaft are both attached to the handle, and wherein the handle, the first shaft, and the second shaft are configured to act as a clamp.
24. The device of claim 16 , further comprising a cable coupled with the handle for attaching the device to a source of radiofrequency energy.
25. The device of claim 16 , further comprising at least one sensor coupled with at least one of the reshaping element or the treatment element, wherein the at least one sensor is configured to sense at least one parameter selected from the group consisting of radiofrequency current, radiofrequency voltage, radiofrequency power, and tissue impedance.
26. The device of claim 25 , wherein the at least one sensor comprises at least one thermocouple.
27. The device of claim 16 , further comprising a cooling member coupled with at least one of the reshaping element or the treatment element.