Hybrid Physical-Virtual Reality Simulation for Clinical Training
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Solution Overview
Problem
Current simulation-based training methods for medical procedures, particularly peripheral nerve blockades, lack comprehensive and realistic feedback, leading to potential complications such as nerve injury and toxicity, due to limitations in physical or virtual models used for training.
Innovation Solution
A hybrid physical-virtual reality simulation system that combines a physical anatomic model with a virtual model derived from medical imaging data, incorporating spatial tracking and haptic feedback to simulate needle insertion and ultrasound guidance, providing realistic tactile and visual feedback based on tissue type and instrument location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If physical models are used for simulation training, then tactile feedback and realism are improved, but complexity and cost of the system increase
Solution Approach 1:
The patent merges physical anatomic models with virtual reality components to create a hybrid simulation system. The physical model provides tactile feedback and anatomical structure, while the virtual reality layer overlays interactive elements, tracking, and feedback mechanisms, resolving the contradiction by combining the strengths of both approaches rather than using either alone.
Solution Approach 2:
The system introduces intermediate components such as tracking devices, sensors, and computational algorithms that mediate between the physical model and the user. These intermediaries enable the physical model to receive and process user inputs while providing enhanced feedback, thereby maintaining realism without requiring the physical model alone to handle all system complexity.
2Adaptability or versatility
If virtual reality models are used for simulation training, then interactivity and feedback capability are improved, but tactile realism and physical interaction quality deteriorate
Solution Approach 1:
The patent combines virtual reality models with physical anatomic models to create a hybrid system. The virtual model provides comprehensive feedback capabilities including visual, auditory, and haptic feedback, while the physical model ensures tactile realism and quality physical interaction, thereby resolving the contradiction by integrating both virtual and physical components.
Solution Approach 2:
The system segments the simulation experience into distinct functional layers: the physical model handles tactile interaction and anatomical structure, while the virtual model handles feedback generation and interactivity. This segmentation allows each component to optimize for its specific function without compromising the other, resolving the contradiction between tactile realism and feedback capability.
3Reliability
If comprehensive feedback mechanisms are added to simulation systems, then training accuracy and safety are improved, but device complexity and cost increase
Solution Approach 1:
The patent merges multiple feedback mechanisms into a unified hybrid system where physical and virtual models work together. The physical model provides inherent anatomical feedback through tissue-like materials, while the virtual model adds layered feedback through sensors and actuators. This integration achieves comprehensive feedback for training safety without requiring all possible individual feedback systems to operate independently.
Solution Approach 2:
The system implements feedback loops where sensors track user interactions with the physical model, and the virtual model processes this information to generate appropriate feedback. This feedback mechanism continuously monitors training parameters and adjusts simulations to enhance learning while maintaining safety, achieving high reliability through systematic feedback rather than through adding more isolated complex components.
4Measurement precision
If physical models are used for nerve block training, then anatomical accuracy is improved, but ability to simulate varied clinical scenarios and tissue variations deteriorates
Solution Approach 1:
The patent introduces dynamic capabilities to the physical model through the virtual reality layer, allowing the simulation to adapt to different clinical scenarios. The system can dynamically adjust virtual overlays, feedback parameters, and simulation conditions while maintaining the same physical anatomical model, thereby achieving both anatomical accuracy and scenario versatility without requiring multiple physical models.
Solution Approach 2:
The hybrid system creates a universal training platform where a single physical model can support multiple clinical scenarios through virtual overlays and configuration changes. The physical model serves as a universal anatomical base, while the virtual reality layer provides multi-functionality for simulating different tissue variations, pathologies, and procedural scenarios, thereby resolving the contradiction between anatomical accuracy and scenario variation capability.
Data Source
AI summary
Systems and methods facilitating training in clinical procedures via mixed reality simulations are disclosed. Such a system can comprise a physical model and a virtual model of an anatomic region associated with the procedure, wherein the virtual model associates tissue types with locations in the physical model. The system can include a tracking component that tracks locations of at least one clinical instrument relative to the models, and an anatomic feedback component that can produce perceptible changes in the physical model based on the interaction between the instrument and virtual model. A clinical device interface can detect outputs of clinical devices like electrical signals, pressure or flow, wherein feedback to the physical model depends on the tracked position of a clinical device and output from the same or different clinical device. Another component can generate feedback effects to the clinical device. Aspects can simulate anesthesiology procedures like local nerve blockade.