Medical apparatus and instruments for renal denervation, treating and reducing hypertension, controlling blood pressure, and treating arrhythmia, heart failure, chronic kidney disease, atrial fibrillation, end stage renal disease, myocardial infarction, anxiety, contrast nephropathy, diabetes, metabolic disorder and insulin resistance; Medical device systems consisting of medical devices for renal denervation, treating and reducing hypertension, controlling blood pressure, and treating arrhythmia, heart failure, chronic kidney disease, atrial fibrillation, end stage renal disease, myocardial infarction, anxiety, contrast nephropathy, diabetes, metabolic disorder and insulin resistance; ultra-sound-emitting catheters used to perform denervation in human beings; medical devices for treating hypertension, arrhythmia, heart failure, chronic kidney disease, atrial fibrillation, end stage renal disease, myocardial infarction, anxiety, contrast nephropathy, diabetes, metabolic disorder and insulin resistance; medical devices used to perform denervation; medical device systems consisting of devices used in a medical setting to perform intravascular denervation; Medical device systems for use in renal denervation and other forms of neuromodulation of the autonomic nervous system, consisting of medical devices, catheters, electrical generators, glass cartridges for medical fluids, plastic cartridges for medical fluids, connection cables, carts, guiding catheters, medical guidewires, medical introducers, and remote controls for medical devices for use in performing denervation of human beings; ultrasound renal denervation systems consisting of medical devices for renal denervation; energy emitting catheter-based systems consisting of medical devices and devices for medical procedures in the nature of neuromodulation and denervation of the autonomic nervous system for use in treating a variety of medical conditions, including hypertension, arrhythmia, heart failure, chronic kidney disease, atrial fibrillation, end stage renal disease, myocardial infarction, anxiety, contrast nephropathy, diabetes, metabolic disorder and insulin resistance, among other medical conditions and also consisting of catheters, electrical generators, glass cartridges for medical fluids, plastic cartridges for medical fluids, connection cables, carts, guiding catheters, medical guidewires, medical introducers, and remote controls for medical devices used in connection with the preceding systems and devices; medical devices for sensing nerve activity and for performing denervation; guiding catheters; ultrasound technology, namely, medical ultrasound apparatus