Safety and Efficacy Study of Extracorporeal Shockwave Therapy in the Treatment of Patients With Resistant Hypertension

Inclusion Criteria: * Subjects who have provided written informed consent. * Age ≥18 and ≤80 years old. * Office systolic blood pressure that remains ≥160 mmHg (≥150 mmHg for patient with type 2 diabetes) despite the stable use of ≥3 antihypertensive medications concurrently at maximally tolerated doses, of which one is a diuretic (unless there is a tolerance or a contraindication for a diuretics). * Able and willing to comply with the required follow-up schedule. Exclusion Criteria: * Subjects who have participated in a clinical study involving another investigational drug or device within 4 weeks prior to Screening. * Have hypertension secondary to an identifiable and treatable cause or take medication that can raise the BP. * Prior renal artery intervention (balloon angioplasty or stenting). * Pregnancy. * Uncompensated heart failure. * Chronic Liver Disease. * Patients with skin wound / infection at the treatment area. * Subjects who take oral anti-coagulants. * Local tumor of treatment area.