This article introduces a specialized tester designed to evaluate frictional forces between catheters/guidewires and vascular access devices, critical for ensuring smooth navigation during minimally invasive procedures. The system measures both static and dynamic friction coefficients under simulated clinical conditions, complying with international medical device standards.

Applicable Standards

Main Parameters

• Friction Force Range: 0-20N (resolution 0.001N)
• Sliding Speed: 5-500 mm/min (programmable profiles)
• Cycle Repeats: 1-1000 passes (customizable)
• Data Output: Digital COF graphs with statistical analysis

Working Principle

The tester employs a motorized stage to drive catheter/guidewire movement across simulated vessel materials while a load cell measures frictional resistance. A high-precision encoder tracks displacement, enabling real-time calculation of coefficient of friction (COF). Temperature-controlled environments ensure consistent testing conditions.

Test Principles

1. Static Friction Testing: Measures initial resistance at movement onset
2. Dynamic Friction Analysis: Evaluates continuous sliding performance
3. Wear Simulation: Assesses surface degradation over repeated cycles

This integrated solution enables manufacturers to optimize device coatings and material combinations for enhanced lubricity, meeting FDA 510(k) submission requirements while improving clinician usability through precise friction characterization.