Surgical suture from McGill University is slippery yet tough, reducing irritation to healing wounds.


  • Flexible
  • Stronger
  • Biocompatible


  • Medical treatment
  • Drug delivery

UN Sustainable Development Goals Addressed

  • Goal 3: Good Health & Wellbeing

The Challenge

Sutures are frequently used in surgical procedures, but mechanical incompatibility with tissues limits their efficiency . Moreover, existing modification techniques for sutures often weaken the material, leaving it vulnerable to rupture or deterioration.

Innovation Details

The surgical suture is a multifunctional, tough gel-sheathed (TGS) material. It consists of a series of fiber-based strands encompassed in a hydrogel sheath. The fibers reinforce the material by providing strength against tensile forces, while the sheath protects the fibers and adheres to the skin. The suture has high interfacial adhesion, but easily detaches without causing damage.

Biomimicry Story

Tendons are tough, fibrous, rope-like tissues that connect muscle to bone or other structures within the body. Each tendon is protected by a tendon sheath, a membrane-like structure that surrounds the tendon, separating it from the tissue around it and allowing the tendon to move freely inside the sheath.