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Related Experiment Video

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Multidirectional Pulley Maneuver Technique in Robotic Hepatectomy.

Ryota Ito1,2, Yoshihiro Ono3, Yoshinori Takeda2

  • 1Division of Hepatobiliary and Pancreatic Surgery, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Koto-ku, Tokyo, Japan.

Annals of Surgical Oncology
|March 24, 2025
PubMed
Summary

The novel multidirectional Pulley maneuver (MDPM) enhances robotic hepatectomy by offering adjustable liver traction. This technique improves control and comfort during liver resections, minimizing complications.

Keywords:
Minimally invasive hepatectomyPulley methodRobotic hepatectomyRobotic liver resectionTraction methodTraction technique

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Area of Science:

  • Surgical Innovation
  • Robotic Surgery
  • Hepatobiliary Surgery

Background:

  • Effective liver traction is vital for bleeding control in robotic hepatectomy.
  • Existing pulley-based traction methods have limitations in direction, force adjustment, and reusability.
  • The multidirectional Pulley maneuver (MDPM) was developed to address these limitations.

Purpose of the Study:

  • To introduce and describe the novel multidirectional Pulley maneuver (MDPM) for robotic hepatectomy.
  • To evaluate the feasibility and safety of the MDPM in clinical application.

Main Methods:

  • The MDPM involves suturing a rubber band with thread to the liver.
  • The thread is routed through a silicone ring and anchored to the peritoneum or diaphragm.
  • External adjustment of thread tension and direction allows for precise liver manipulation, avoiding excessive force.

Main Results:

  • The MDPM was successfully applied in five robotic hepatectomy cases.
  • Variable configurations of rubber bands and pulleys were used depending on the resection type.
  • Median blood loss was 150 mL, with no reported postoperative complications related to the MDPM.

Conclusions:

  • The MDPM provides effective and adjustable liver traction during robotic hepatectomy.
  • This technique facilitates a more controlled and comfortable liver resection process.
  • The MDPM represents a promising advancement in robotic liver surgery.