New and Emerging Artificial Urinary Sphincters for Male Stress Urinary Incontinence: From Gold Standard to Next...

Area of Science:

• Urology
• Biomedical Engineering
• Medical Devices

Background:

• The AMS-800 artificial urinary sphincter (AUS) has been the clinical standard for male stress urinary incontinence (SUI) for over 40 years.
• Despite its efficacy, the AMS-800 has limitations including suboptimal continence rates, fixed pressure, manual operation, and risks of urethral complications.
• These limitations have driven the development of a new generation of AUS devices.

Purpose of the Study:

• To review current, emerging, and discontinued AUS devices.
• To analyze how novel AUS designs address the shortcomings of previous devices, particularly the AMS-800.
• To highlight innovations in AUS technology for male SUI treatment.

Main Methods:

• Comprehensive literature search of PubMed, Embase, and clinical trial registries.
• Inclusion of regulatory materials, manufacturer information, and abstracts.
• Focus on device design and reported outcomes.

Main Results:

• Current innovations include adjustable pressure, stress-responsive systems, simplified designs, remote controls, and electromechanical compression.
• Emerging AUS devices show promising early data, but often based on limited cohort, safety, or preclinical studies.
• Direct comparative data against the AMS-800 is scarce.

Conclusions:

• New AUS designs offer potential advantages over the AMS-800.
• Further long-term clinical data is essential to validate improvements in continence, safety, durability, and usability.
• The ultimate impact of these innovations on revision rates and patient outcomes requires extended evaluation.