stapleline

A staple line, or stapleline, is the seal created along a tissue edge when a surgical stapler applies rows of staples to close a wound or create an anastomosis. The device folds tissue and deposits metal or absorbable staples, forming a continuous line of closure along the intended margin.

It is widely used in gastrointestinal surgery (segmental resection, bowel anastomosis, gastric bypass), thoracic surgery (lung resections, lobectomies), gynecologic procedures, and urologic surgeries; linear staplers create long staple lines, while circular staplers can create an end-to-end anastomosis with a circular line.

Materials and reinforcement: Staples are commonly made from stainless steel or titanium; some systems use absorbable polymers. In some contexts, the staple line is reinforced with buttressing materials (e.g., collagen, polyglycolic acid sheets) or sealants to reduce leakage and bleeding.

Complications: Despite improvements, staple lines can dehiscence or leak, leading to leaks, hemorrhage, or strictures; poor tissue quality, tension, ischemia, or technical errors can increase risk. Postoperative monitoring and, if needed, imaging or surgical revision are used for management.