Devices to treat nasal airways
A device is described for treating a nasal airway by modifying a property of a nasal tissue of or near a nasal valve of the airway, without using a surgical incision or an implant, to decrease airflow resistance or perceived airflow resistance in the nasal airway. Various embodiments include an elongate shaft, a bipolar radiofrequency delivery member extending from one end of the shaft, and a handle attached to the elongate shaft at an opposite end from the radiofrequency delivery member. The radiofrequency delivery member is sized to be inserted into a nose and configured to at least temporarily deform the nasal tissue and deliver radiofrequency energy. The radiofrequency delivery member includes two rows of protruding electrodes disposed on a tissue contact surface, and the device is configured to deliver radiofrequency energy from one row of electrodes to the other row of electrodes.
1. A device for treating a nasal airway by modifying a property of a nasal tissue of or near a nasal valve of the airway, without using a surgical incision or an implant, to decrease airflow resistance or perceived airflow resistance in the nasal airway, the device comprising:
a handle;
only one elongate shaft extending from one end of the handle; and
only one treatment element extending from an end of the elongate shaft that is opposite the handle, wherein the treatment element is sized to be inserted into a nostril and configured to at least temporarily deform the nasal tissue and deliver radiofrequency energy to modify the property of the nasal tissue, and wherein the treatment element comprises:
a front, tissue contact surface having a convex shape configured to at least temporarily deform the nasal tissue into a concave shape;
a back surface;
two rows of protruding, bipolar, radiofrequency electrodes disposed along a length of the tissue contact surface, wherein the device is configured to deliver radiofrequency energy from one of the two rows of electrodes to the other of the two rows of electrodes; and
a heat sensor disposed on the tissue contact surface of the treatment element, between the two rows of electrodes.
2. A device as in claim 1 , wherein the radiofrequency electrodes are needle electrodes.
3. A device as in claim 1 , wherein the radiofrequency electrodes are protruding, non-penetrating electrodes.
4. A device as in claim 1 , wherein the handle comprises a connector for connecting the handle with a power source.
5. A device as in claim 1 , wherein the back surface of the treatment element varies in width along a length of the back surface.
6. A device as in claim 5 , wherein the back surface widens moving distally along a first, proximal portion of the treatment element, and then narrows towards a distal tip of the treatment element.
7. A device as in claim 1 , further comprising a tissue cooling member attached to the device at or near the radiofrequency delivery member.
8. A device as in claim 1 , wherein the heat sensor comprises a thermocouple that protrudes from the tissue contact surface of the treatment element between the two rows of electrodes.