Non-invasive treatment of bronchial construction
Devices, systems and methods are disclosed for treating bronchial constriction related to asthma, anaphylaxis or chronic obstructive pulmonary disease. The treatment comprises transmitting impulses of energy non-invasively to selected nerve fibers that are responsible for smooth muscle dilation. The transmitted energy impulses, comprising magnetic and/or electrical, mechanical and/or acoustic, and optical and/or thermal energy, stimulate the selected nerve fibers.
1. A method of treating a disease or disorder in a patient, the method comprising:
positioning a surface of a housing in contact with an outer skin surface of a neck of the patient, wherein the housing is coupled to a power supply and the housing comprises an energy transmitter located within an interior of the housing; and
applying sufficient energy to the energy transmitter via the power supply to generate an electrical impulse at or near a vagus nerve of the patient, wherein the electrical impulse is sufficient to modulate afferent fibers of the vagus nerve and stimulate a release of catecholamines within the patient to treat the disease or disorder.
2. The method of claim 1 , wherein the catecholamines comprise endogenous B-agonists, epinephrine or norepinephrine.
3. The method of claim 1 , wherein the disease or disorder comprises bronchoconstriction and the electrical impulse is sufficient to cause a release of the catecholamines into a circulation of the patient at concentrations sufficient to produce bronchial smooth muscle relaxation.
4. The method of claim 1 , wherein the energy transmitter comprises a magnetic coil and the sufficient energy comprises a magnetic field.
5. The method of claim 4 , wherein the magnetic coil comprises a toroid.
6. The method of claim 1 , wherein the energy transmitter comprises an electrode and the sufficient energy comprises an electric current.
7. The method of claim 1 , wherein the electrical impulse comprises a frequency from about 15 to about 50 Hz.
8. The method of claim 1 , wherein the electrical impulse comprises a pulsed-on-time from about 50 to about 500 microseconds.
9. The method of claim 1 , wherein the housing comprises a volume of electrically conducting fluid within the interior of the housing, wherein the energy transmitter is at least partially surrounded by and in contact with a portion of the electrically conductive fluid.
10. The method of claim 9 , wherein the electrically conductive fluid comprises an electrically conductive gel.
11. The method of claim 1 , wherein the energy transmitter is a first energy transmitter and the housing further comprising a second energy transmitter.
12. The method of claim 11 , wherein each of the first energy transmitter and the second energy transmitter is an electrode.
13. The method of claim 1 , wherein the electrical impulse is a first electrical impulse and further comprising a second electrical impulse.
14. A device for treating a disease or a disorder in patient, the device comprising:
a power source;
a housing coupled to the power source and having an interior, and an outer contact surface, wherein the outer contact surface is configured to contact an outer skin surface of a neck of a patient;
an energy transmitter positioned within the interior of the housing; and
wherein the power source is configured to supply energy to the energy transmitter and the energy is sufficient to generate an electrical impulse at a vagus nerve of the patient when the outer contact surface of the housing is in contact with the outer skin surface of the neck of the patient, wherein the electrical impulse is sufficient to modulate afferent fibers of the vagus nerve and stimulate a release of catecholamines within the patient to treat the disease or disorder.
15. The device of claim 14 , wherein the catecholamines comprise endogenous B-agonists, epinephrine or norepinephrine.
16. The device of claim 14 , wherein the disease or disorder comprises bronchoconstriction and the electrical impulse is sufficient to cause a release of the catecholamines in a circulation of the patient at concentrations sufficient to produce bronchial smooth muscle relaxation.
17. The device of claim 14 , wherein the power source is located within the interior of the housing.
18. The device of claim 14 , wherein the energy transmitter comprises a magnetic coil and the energy comprises a magnetic field.
19. The device of claim 14 , wherein the interior of the housing is at least partially filled with an electrically conductive fluid that is in contact with, and at least partially surrounds, the energy transmitter.
20. The device of claim 19 , wherein the electrically conductive fluid comprises ferromagnetic particles.
21. The device of claim 19 , wherein the electrically conductive fluid comprises a magnetorheological fluid.
22. The device of claim 14 , wherein the energy transmitter comprises an electrode and the energy comprises an electric current.
23. The device of claim 14 , wherein the electrical impulse comprises a frequency from about 15 to about 50 Hz.
24. The method of claim 14 , wherein the energy transmitter is a first energy transmitter and the housing further comprising a second energy transmitter.
25. The method of claim 24 , wherein each of the first energy transmitter and the second energy transmitter is an electrode.
26. The method of claim 14 , wherein the electrical impulse is a first electrical impulse and further comprising a second electrical impulse.