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Does Variable Clamping Pressure Endanger Urologic Prosthetic Tubing?
Logan W Grimaud1, Jeremy A Kurnot1, Matthew Salvino1
1Duke University School of Medicine, Department of Urology, Durham, NC.
Urology
|June 30, 2025
Summary
Rubber-shod hemostat (RSH) clamp pressures do not compromise urologic prosthesis tubing (UPT) integrity. However, bare hemostats can cause surface damage and material loss in UPT.
Area of Science:
- Urology
- Biomaterials Science
- Surgical Instrumentation
Background:
- Urologic prosthesis tubing (UPT) is susceptible to mechanical damage during surgical procedures.
- Hemostats are commonly used to manipulate tubing, but their impact on UPT integrity is not fully understood.
Purpose of the Study:
- To investigate the effect of variable rubber-shod hemostat (RSH) clamp pressures on the structural integrity of urologic prosthesis tubing (UPT).
Main Methods:
- UPT segments were subjected to four clamping conditions: control, RSH one-click, RSH three-click, and bare hemostat one-click.
- Clamping duration was standardized at 60 seconds.
- Tubing was subjected to linear force until failure; force at failure, tear location, and leakage were recorded.
- Scanning electron microscopy (SEM) was used to assess surface damage.
Main Results:
- No significant differences in the force at failure (FF) were observed between control, RSH one-click, and RSH three-click groups.
- The bare hemostat group showed a significantly higher incidence of tearing at the point of intervention (60%) and leakage (20%).
- SEM analysis revealed surface damage exclusively in the bare hemostat group.
Conclusions:
- Variable clamp pressures from RSH devices do not significantly compromise UPT durability.
- Bare hemostats pose a risk of surface damage and material integrity loss to UPT.
