External autonomic modulation
In some embodiments, nerves surrounding arteries or leading to organs are targeted with energy sources to correct or modulate physiologic processes. In some embodiments, different types of energy sources are utilized singly or combined with one another. In some embodiments, bioactive agents or devices activated by the energy sources are delivered to the region of interest and the energy is enhanced by such agents.
1. A method to stimulate or to at least partially inhibit a function of a nerve traveling to or from a kidney, comprising:
identifying an acoustic window at a back of a torso of a patient through which an arterial region can be imaged;
transmitting a first energy through a skin of the patient from the back of the torso of the patient;
imaging the arterial region using the transmitted first energy to obtain an image; and
applying a second energy to an arterial adventitia in the arterial region that has been imaged.
2. The method of claim 1 , further comprising tracking the arterial region using the image created by the first energy.
3. The method of claim 1 , wherein the second energy is applied to stimulate the nerve traveling to or from the kidney.
4. The method of claim 1 , wherein the second energy is applied to at least partially inhibit the nerve traveling to or from the kidney.
5. A method to locate a position of a blood vessel in a body of a patient, comprising:
applying a first wave of ultrasound, from a first direction, to a region of an intact blood vessel from outside of the patient;
detecting a first return signal that is that is associated with a reflection of the first wave of ultrasound;
comparing the applied first wave and the first return signal;
simultaneously, or sequentially, applying a second wave of ultrasound from a second direction to the region of the blood vessel, wherein the second direction is different from the first direction;
detecting a second return signal that is associated with a reflection of the second wave of ultrasound;
using the first and second return signals to determine a position, in a three dimensional coordinate reference, of the region of the blood vessel to track the position of the region of the blood vessel.
6. The method of claim 5 , further comprising controlling a therapeutic ultrasound transducer to apply energy to the position of the blood vessel.
7. The method of claim 6 , wherein the energy is applied to stimulate a nerve outside the blood vessel.
8. The method of claim 6 , wherein the energy is applied to at least partially inhibit a function of a nerve outside the blood vessel.
9. A system for stimulating or to at least partially inhibiting a function of a nerve traveling to or from a kidney, comprising:
an energy source configured for transmitting a first energy from a back of a torso of a patient through a skin of the patient; and
an imager configured for imaging an arterial region using the transmitted first energy to obtain an image;
wherein the energy source is also configured for applying a second energy to an arterial adventitia in the arterial region that has been imaged.
10. The system of claim 9 , further comprising a processor configured for tracking the arterial region using the image created by the first energy.
11. The system of claim 9 , wherein the energy source is configured to apply the second energy at a level sufficient to stimulate the nerve traveling to or from the kidney.
12. The system of claim 9 , wherein the energy source is configured to apply the second energy at a level sufficient to at least partially inhibit the nerve traveling to or from the kidney.
13. A system for locating a position of a blood vessel in a body of a patient, comprising:
a first energy source configured for applying a first wave of ultrasound, from a first direction, to a region of an intact blood vessel from outside of the patient;
a first detector configured for detecting a first return signal that is associated with a reflection of the first wave of ultrasound;
a second energy source configured for applying a second wave of ultrasound from a second direction to the region of the blood vessel, wherein the second direction is different from the first direction;
a second detector configured for detecting a second return signal that is associated with a reflection of the second wave of ultrasound; and
a processor configured to use the first and second return signals to determine a position, in a three dimensional coordinate reference, of the region of the blood vessel to track the position of the region of the blood vessel.
14. The system of claim 13 , further comprising a therapeutic ultrasound transducer configured to apply energy to the position of the blood vessel.
15. The system of claim 14 , wherein the therapeutic ultrasound transducer is configured to apply the energy at a level sufficient to stimulate a nerve outside the blood vessel.
16. The system of claim 14 , wherein the therapeutic ultrasound transducer is configured to apply the energy at a level sufficient to at least partially inhibit a function of a nerve outside the blood vessel.