Procedures & Treatments

SNS Nerve Stimulators

Sacral neuromodulation (SNS) uses a small implanted device to deliver mild electrical pulses to the sacral nerves, which regulate bladder and bowel function. When medications fail to control overactive bladder, urge incontinence, or urinary retention, SNS offers long-term, adjustable relief. Dr. Hamoui implants both the Medtronic InterStim and Axonics systems.

Procedure illustration — image coming soon

How It Works

Lead placed near the S3 sacral nerve; neurostimulator implanted under the skin
Gentle electrical pulses modulate abnormal bladder nerve signals
Trial phase (1–2 weeks, external device) confirms benefit before permanent implant
Settings adjusted wirelessly via remote or smartphone app
Fully reversible — device can be removed if needed

Who Is a Candidate

OAB with urge incontinence not controlled by medications
Non-obstructive urinary retention
Urgency/frequency significantly impacting daily life
Failed or cannot tolerate anticholinergic or beta-3 agonist medications
Fecal urgency or incontinence (strong clinical evidence)

Medtronic InterStim vs. Axonics

InterStim Micro — rechargeable, 15-year battery; 1.5T full-body / 3T head MRI compatible
Axonics — rechargeable, 15+ year battery; full-body 3T MRI; smaller profile
Equivalent clinical outcomes; choice based on anatomy and preference
Permanent implant is outpatient; same-day discharge
Long-term success rates 75–85% in appropriately selected patients

Learn more from the manufacturers Medtronic InterStim → Axonics →