Interactive Surgical Liver Phantom for Cholecystectomy Training

TL;DR

This paper introduces an interactive surgical phantom designed for cholecystectomy training, enabling realistic manipulation and cutting of synthetic tissue, with force modeling based on retraction demonstrations.

Contribution

It presents a novel interactive phantom that accurately mimics tissue behavior and supports surgical training for robot-assisted procedures.

Findings

Force-displacement model matches ex-vivo tissue behavior

Enables realistic surgical task simulation

Supports safe, effective training environments

Abstract

Training and prototype development in robot-assisted surgery requires appropriate and safe environments for the execution of surgical procedures. Current dry lab laparoscopy phantoms often lack the ability to mimic complex, interactive surgical tasks. This work presents an interactive surgical phantom for the cholecystectomy. The phantom enables the removal of the gallbladder during cholecystectomy by allowing manipulations and cutting interactions with the synthetic tissue. The force-displacement behavior of the gallbladder is modelled based on retraction demonstrations. The force model is compared to the force model of ex-vivo porcine gallbladders and evaluated on its ability to estimate retraction forces.