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 inhibit a function of a nerve traveling to or from a kidney, comprising:
identifying an acoustic window at a back of a body of a patient through which a hilum of the kidney can be imaged;
transmitting a first energy through a skin of the patient from the back of the body of the patient;
imaging the hilum of the kidney using the transmitted first energy to obtain an image; and
applying a second energy to the hilum of the kidney that has been imaged.
2. The method of claim 1 , further comprising tracking the hilum of the kidney using the image created by the first energy.
3. The method of claim 1 , wherein the second energy is applied to at least partially inhibit the nerve traveling to or from the kidney.
4. The method of claim 1 , wherein the first energy comprises ultrasound energy.
5. The method of claim 1 , wherein the second energy comprises ultrasound energy.
6. A system to at least partially inhibit a function of a nerve traveling to or from a kidney, comprising:
a first energy source configured for transmitting a first ultrasound energy from a back of a body of a patient through a skin of the patient;
an imager configured for imaging a blood vessel using a transmitted first ultrasound energy to obtain an image; and
a second energy source configured to apply a second ultrasound energy to an adventitial region of the blood vessel region that has been imaged using the first ultrasound energy, the second ultrasound energy being focused ultrasound energy.
7. The system of claim 6 , further comprising a processing unit configured for tracking the blood vessel using the image created by the first ultrasound energy.
8. The system of claim 6 , further comprising a processing unit executing a modeling algorithm with an input and an output, the input comprising a three dimensional coordinate space and a representation of the second energy source.
9. The system of claim 8 , wherein the output of the modeling algorithm comprises an energy level.
10. The system of claim 9 , wherein the output of the modeling algorithm further comprises a direction of the second ultrasound energy.
11. The system of claim 6 , wherein the imager is configured to image an intravascular catheter.
12. The system of claim 6 , further comprising a processing unit configured to determine phase and power output for the second energy source in dependence on an image provided by the imager.
13. The system of claim 6 , further comprising a processing unit configured to receive an input regarding error in position of the focused ultrasound energy.
14. The system of claim 6 , further comprising a processing unit coupled to the second energy source, wherein the processing unit is configured to receive input regarding lesion size in an ablation zone.
15. The system of claim 6 , further comprising a processing unit configured to:
obtain an error variable;
use the error variable to create a representation of temperature and position, and their associated errors, and
use the representation to create a map.
16. The system of claim 6 , further comprising a processing unit configured to determine a baseline position for the energy source, and one or more positions of the blood vessel with respect to the baseline.
17. The system of claim 16 , wherein the processing unit is configured to update a target of the energy source in dependence on a difference between the one or more positions and the baseline position.
18. The system of claim 17 , wherein a frequency of the updates is greater than 50 Hertz.
19. The system of claim 16 , wherein the one or more positions of the blood vessel are determined using an intravascular targeting catheter.
20. The system of claim 6 , further comprising a processing unit executing a targeting algorithm for tracking the adventitial region of the blood vessel.