AR Wound Simulation with Dynamic Haptic Feedback
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Solution Overview
Problem
Current medical training simulations lack realism and hands-on experience due to static and purely virtual wound models, which limit the immersive and tactile feedback necessary for effective casualty care training, especially in military and civilian contexts.
Innovation Solution
An augmented reality system that combines physical and virtual elements, using wearable AR headsets to simulate dynamic wounds with tactile feedback, including embedded actuators for realistic haptic effects and sensors for responsive visual and physiological simulations, allowing trainees to interact with wounds that change based on treatment and manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If static moulage and fake blood are used for wound simulation, then the setup is simple and easy to prepare, but the realism and dynamic response of the wound is poor
Solution Approach 1:
The patent transforms static moulage into dynamic wound models by integrating actuators that can change the physical state of the wound simulation in real-time. The wound model can now pulse, bleed, change color, and respond to trainee actions, providing dynamic feedback that enhances realism while maintaining the physical tactile experience of hands-on training.
Solution Approach 2:
The patent replaces purely mechanical static moulage with a hybrid system that incorporates sensors, actuators, and computer graphics. This substitution enables the wound model to respond dynamically to trainee actions through a closed-loop system that combines physical manipulation with visual and haptic feedback, achieving higher realism without sacrificing ease of setup.
2Reliability
If purely virtual wound models are used, then the realism can be enhanced through computer graphics, but the tactile feedback and hands-on experience are lost
Solution Approach 1:
The patent merges virtual wound models with physical moulage to create a hybrid system that preserves both the visual realism of computer-generated wounds and the tactile feedback of physical structures. The physical wound model serves as the foundation for hands-on manipulation while embedded sensors and actuators add virtual-like responsive behaviors, creating a unified training experience that satisfies both requirements.
3Productivity
If simple static wound presentations are used, then the preparation time is short, but the training quality and hands-on practice opportunity are limited
Solution Approach 1:
The patent implements pre-programmed wound responses and physiological parameters that are prepared in advance through software configuration. The wound model comes pre-loaded with response protocols for various treatments and conditions, allowing trainees to immediately engage with high-quality simulation scenarios without lengthy setup procedures. This preliminary preparation of virtual control logic enables rapid deployment of comprehensive training scenarios.
4Loss of time
If field training with simple presentations is used, then the training schedule can be compressed, but the hands-on practice in realistic settings is limited
Solution Approach 1:
The patent creates a portable, self-contained wound simulation system that replicates realistic training scenarios in a compact form factor. The system includes integrated sensors, actuators, and display components that can be deployed in field environments without requiring extensive infrastructure. This portable copying of realistic training conditions enables compressed schedules while maintaining high-quality hands-on practice opportunities through replicated physiological responses and interactive wound behavior.
Data Source
AI summary
An anatomical feature simulation unit is a physical device designed to help simulate an anatomical feature (e.g., a wound) on an object (e.g., a human being or human surrogate such as a medical manikin) for instructing a trainee to learn or practice treatment skills. For the trainee, the simulation looks like a real body part when viewed using an Augmented Reality (AR) system. Responsive to a change in the anatomic state of the object (e.g., bending a knee or raising of an arm) not only the spatial location and orientation of the anatomical feature stays locked on the object in the AR system, but the characteristics of the anatomical feature change based on the physiologic logic of changing said anatomical state (e.g., greater or less blood flow, opening or closing of a wound).