Building the Future of Advanced Suture Manufacturing

Heat Stiffening: Clean, Stable and Automatable

For more than two decades we have shown that the most reliable way to stiffen surgical sutures is with controlled heat. Glue‑based methods are messy, inconsistent and difficult to validate, whereas heat stiffening is clean, repeatable and stable. Once a program is validated, the output is always the same — independent of operators or batch changes.

• Minimal waste: our process produces only 1–2 m of scrap per full spool, saving cost on expensive fibers.
• Enables automation: a clean, predictable tip geometry is essential for automated processes; glue introduces sticky residue and variability.
• Stable and clean: no contamination risk, consistent quality and easy integration into cleanroom environments.

Four‑Blade Precision Cutting

Our machines employ a four‑blade scissor geometry, ensuring that every cut is clean and repeatable. This design eliminates fraying, even on complex or angled cuts, and provides long‑term mechanical stability for millions of cycles.

• No fraying: four blades shear the fiber cleanly, preventing tear or damage even on challenging materials.
• Consistent tip quality: combined with heat stiffening, the four‑blade system produces perfect, uniform tips every time.
• Durability: engineered for millions of cycles, our cutting assemblies deliver stable long‑term performance.

Sonderegger Engineering AG was founded in 1998 by Dr. Marcel Sonderegger, who introduced the first heat‑stiffening suture cutters to the global market. Since then, our machines have been continuously refined through deep technological expertise, decades of field experience and close collaboration with leading suture manufacturers.

We remain a family‑led, engineering‑driven company focused on creating high‑precision systems that run reliably for decades. Many of our earliest machines are still operating today — a testament to robust design and long‑term serviceability.

Our differentiation comes from:

• Deep expertise in suture manufacturing technology and process engineering.
• Advanced mechanical, electronic and software know‑how.
• Long‑term after‑sales support, with parts and service available worldwide.
• Machines designed for 10–20+ year lifecycles, engineered to be serviced and upgraded over time.