Neurosurgical patties: adhesion and damage mitigation

Area of Science:

• Neurosurgery
• Biomaterials Science
• Tissue Engineering

Background:

• Neurosurgical patties are crucial for protecting brain tissue and managing fluid during operations.
• Emerging evidence suggests neurosurgical patties may adhere to brain tissue, causing damage upon removal.
• Quantifying this adhesion is essential for improving surgical safety.

Purpose of the Study:

• To characterize and quantify the adhesion between neurosurgical patties and brain tissue.
• To assess the resulting neural tissue damage caused by patty adhesion.
• To identify factors influencing patty-brain tissue adhesion.

Main Methods:

• Utilized a custom peel apparatus for 90° peel tests on five neurosurgical patty products.
• Evaluated adhesion under four conditions: wet/dry patties, wet brain tissue, and varying peel speeds (5 mm/sec, 20 mm/sec).
• Analyzed patty-tissue interaction using peel-force traces and histological examination.

Main Results:

• Significant differences in adhesion strength were observed across patty products and experimental conditions (p < 0.001).
• Delicot patties exhibited the highest adhesion strength in both wet and dry conditions.
• Irrigation reduced mechanical adhesion by up to 550%, with damage correlating to fiber contact.

Conclusions:

• Both mechanical and liquid-mediated adhesion between neurosurgical patties and neural tissue result in damage.
• Delicot patties demonstrated the strongest adhesion.
• Regular irrigation during neurosurgery is recommended to minimize patty adhesion and neural tissue damage.