Test apparatus and methods for performance evaluation of an artificial urinary sphincter

Area of Science:

• Biomedical Engineering
• Urology
• Medical Device Testing

Background:

• Artificial urinary sphincters are crucial for managing urinary incontinence.
• Standardized in vitro testing is essential for evaluating the performance and reliability of these devices.

Purpose of the Study:

• To design, construct, and validate an experimental apparatus for the in vitro performance assessment of an artificial urinary sphincter.
• To establish a reliable method for simulating physiological urinary tract conditions.

Main Methods:

• Developed a simulated urinary tract capable of delivering simulated urine at physiological pressures (0-93 cm H2O) and flow rates (0-830 ml/min).
• Utilized excised porcine or artificial urethras for testing.
• Employed transducers to measure inlet urine pressure, sphincter temperatures, urine flow, differential urethral pressure, and sphincter linear motion.
• Integrated a PC-based data acquisition system for real-time data recording and analysis.

Main Results:

• The simulated urinary tract effectively replicated physiological conditions for artificial sphincter testing.
• The data acquisition system accurately measured and recorded critical performance parameters.
• The apparatus demonstrated suitability for evaluating artificial urinary sphincter functionality.

Conclusions:

• The developed experimental apparatus and simulated urinary tract are adequate for in vitro performance testing of artificial urinary sphincters.
• The data acquisition system provides accurate and reliable data for assessing device performance.
• This system facilitates objective evaluation of artificial urinary sphincter technology.