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Smart surgical sutures using soft artificial muscles.

Phuoc Thien Phan1, Trung Thien Hoang1, Mai Thanh Thai1

  • 1Graduate School of Biomedical Engineering, Faculty of Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia.

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Researchers developed novel smart sutures using soft hydraulic artificial muscles for flexible endoscopic surgery. These sutures offer programmable tension and self-tightening knots or anchors, improving wound closure.

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Area of Science:

  • Biomedical Engineering
  • Soft Robotics
  • Surgical Technology

Background:

  • Flexible endoscopic surgery presents challenges in wound closure.
  • Existing smart sutures aim to monitor wounds or simplify knot tying.
  • Developing soft robotic sutures with self-tightening capabilities remains difficult.

Purpose of the Study:

  • To introduce a new concept of smart sutures for flexible endoscopic surgery.
  • To enable programmable, uniform tension distribution for wound closure.
  • To provide self-tightening knots or automatically deploying anchors.

Main Methods:

  • Utilized soft hydraulic artificial muscles capable of elongation and contraction.
  • Integrated a pressure locking mechanism for state holding and self-shrinking.
  • Examined puncturing and holding forces of sutures with anchors.
  • Conducted ex-vivo experiments on porcine stomach and colon.

Main Results:

  • Demonstrated the feasibility of smart sutures with programmable tension control.
  • Validated the functionality of self-tightening knots and deployed anchors.
  • Confirmed the usefulness of the smart sutures in ex-vivo surgical models.

Conclusions:

  • The novel smart sutures offer a promising solution for wound closure in endoscopic procedures.
  • This technology has the potential to advance surgical techniques, training, and commercialization.
  • Further development is expected to enhance their application in the surgical field.