Ultrastructural analysis of different-made staplers' staples

Area of Science:

• Materials Science
• Biomedical Engineering
• Surgical Technology

Background:

• Mechanical staplers are widely used in gastrointestinal surgery to reduce operative time.
• Chinese-made staplers offer a lower price point compared to American-made devices.
• Existing literature primarily compares clinical outcomes, with limited focus on structural differences.

Purpose of the Study:

• To conduct an ultrastructural analysis of surgical staples from different manufacturers.
• To identify structural differences that may explain price disparities.
• To assess if these differences impact clinical outcomes.

Main Methods:

• Morphological analysis of staples.
• Energy dispersive X-ray spectroscopy for elemental composition.
• Metal release assessment using inductively coupled plasma mass spectroscopy.
• Ageing tests in simulated body fluid and Aquaregia.

Main Results:

• Staple cross-sections varied (square vs. round).
• Titanium composition was confirmed, with one American brand using an alloy.
• Statistically significant differences in metal ion release were observed between samples.
• Roughness and chip presence were comparable, except for one American brand.

Conclusions:

• Ultrastructural differences exist among surgical staplers, unrelated to price.
• Further investigation is required to confirm these findings.
• The clinical relevance of observed ultrastructural variations needs to be determined.