Humanoids improve setup for robot-assisted laparoscopic surgery tasks
Humanoids for Robot-Assisted Surgery: Bimanual Base Placement and Tool-Mount Optimization via Capability Maps
Robotics
Summary
Robotic humanoid helpers could assist surgeons in minimally invasive operations, but only if they can reach all necessary spots efficiently. This paper explains how researchers tested where to place humanoid robots and their tools to cover the surgical work area best. They showed that carefully optimizing both the robot’s position and tool angles greatly improves the robot’s reach in many types of surgeries. Some surgeries are easier for robots to cover because their surgical areas are smaller or less overlapping. This work shows promising cases where humanoids can help soon and where challenges remain for broader use.
What this means in practice
- •For medical device engineers: Design robot-assisted surgery setups by jointly optimizing humanoid base and tool mount positioning to increase surgical tool reachability.
- •For robotics integrators: Improve deployment plans for humanoid robots in laparoscopic procedures by quantitatively assessing workspace coverage and positioning constraints.
Authors
Peihan Zhang, Zekai Liang, Florian Richter, Nikita Thareja, Ryan Broderick, Shanglei Liu, Michael Yip
Abstract
Rapid advances in humanoid robotics have motivated growing interest in the application of humanoids for healthcare and clinical tasks. However, it remains unclear how close contemporary humanoids are to meeting the kinematic demands of robot-assisted laparoscopic surgery. In this work, we address the question of optimal robot positioning through a quantitative analysis of workspace and robot setup configurations. We present a capability-map-based robot setup framework that optimizes humanoid base placement and tool mounting orientation to maximize bimanual humanoid reachability while accounting for tool-tip kinematics and remote-center-of-motion (RCM) constraints. We evaluate three humanoid platforms spanning different body dimensions and kinematic redundancy on workspace reachability for three representative general surgery procedures: cholecystectomy, inguinal hernia repair, and sleeve gastrectomy. The proposed joint optimization of base placement and tool mounting consistently outperforms base-only optimization and heuristic baselines. For cholecystectomy and inguinal hernia repair, which are characterized by relatively small and minimally overlapping workspaces, humanoid reachability approached 90%. For the larger, overlapping multi-port arm workspace of sleeve gastrectomy, humanoids yield substantially lower coverage. These results quantify the near-term promise of humanoids for selected laparoscopic procedures and clarify key limitations that must be addressed for broader deployment.