Surgical Simulation Training in VR

Overview

Surgical training traditionally relies on cadavers, animal models, or expensive physical simulators — each with significant limitations in accessibility, repeatability, and fidelity. This project developed a VR training platform for laparoscopic cholecystectomy (gallbladder removal) that provides physics-based interaction with organs and surgical tools, enabling trainees to practice the procedure in an immersive, risk-free environment.

Process & Approach

Working alongside a team of 3D artists and medical consultants, the project started with reference-gathering from actual surgical procedures. The organ models were sculpted to anatomical accuracy, then rigged with soft-body physics to respond realistically to tool interaction — grasping, cutting, and cauterization. I evaluated multiple CPU and GPU-based physics frameworks to find the optimal balance between simulation fidelity and VR frame-rate requirements. Fluid simulation was integrated for realistic bleeding and irrigation. Iterative usability testing with medical professionals guided refinements to tool ergonomics and visual feedback.

Key Features

• Physics-based soft body deformation for organ interaction
• Fluid simulation for bleeding and surgical irrigation
• Realistic laparoscopic tool mechanics (grasper, cauterizer, scissors)
• Performance-optimized for consistent VR frame rates
• Usability evaluation with medical training professionals

Technical Challenges

The primary challenge was achieving visually convincing soft-body deformation that could run within VR's strict frame-rate budget. GPU-based approaches offered better fidelity but introduced latency spikes; CPU-based solutions were more predictable but less detailed. Balancing surgical realism with interaction responsiveness required extensive profiling and a hybrid approach. Fluid simulation added another layer of computational expense that demanded careful LOD management.

Impact & Learnings

The platform demonstrated that consumer-grade VR hardware could deliver training experiences approaching the utility of dedicated surgical simulators at a fraction of the cost. Feedback from medical professionals validated the interaction fidelity as sufficient for early-stage procedural training, particularly for building spatial awareness and tool coordination skills.

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