3D Position Tracking for Injection Training Models
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Solution Overview
Problem
The lack of standardized training and certification for injectors leads to inconsistent expertise and increased risks of complications during medical injections, as current training methods rely on limited live models and do not account for diverse anatomical features or internal procedures.
Innovation Solution
A system utilizing two cameras to track the three-dimensional position of a testing tool within an anatomically accurate training model, which includes optically transmissive layers to simulate tissue and an opaque outer skin layer, allowing for accurate tracking of injection depths and angles without the need for camera calibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If classroom-based training with live models is used, then hands-on experience is provided, but the availability and diversity of training scenarios are limited
Solution Approach 1:
The patent creates a virtual copy of the human body with anatomically accurate three-dimensional representation of internal organs, tissues, and structures. This virtual model replicates the appearance and internal anatomy of real human bodies, allowing trainees to practice injection procedures on unlimited virtual patients with diverse anatomical features without requiring multiple live models.
Solution Approach 2:
The system transitions from two-dimensional images or physical models to a fully three-dimensional virtual environment. This enables realistic depth perception, accurate spatial relationships, and multi-angle viewing of anatomical structures, providing a more immersive and accurate training experience that closely mimics real clinical conditions.
2Measurement precision
If multiple cameras are used to track three-dimensional position, then measurement accuracy is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical calibration systems with an optical-based solution. The system uses the natural optical properties of the transparent training model and refraction principles to determine three-dimensional positions. By substituting mechanical calibration with optical tracking and mathematical calculations based on refraction indices, the system achieves accurate 3D positioning without requiring complex calibration procedures.
Solution Approach 2:
The training model itself serves as the calibration reference by incorporating transparent layers with known optical properties. The system uses the model's own structure and the refraction of light through its layers to automatically determine positions, eliminating the need for external calibration equipment or procedures. The model essentially calibrates itself through its optical characteristics.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This system enhances training by providing accurate three-dimensional location data of injection tools, improving the realism and effectiveness of injection training, reducing the risk of complications and enhancing patient safety by allowing for diverse anatomical simulations and internal procedure practice.
Implementation Method 1
the training model including one or more resilient layers configured to receive a tip of a testing tool and a rigid innermost layer, the one or more resilient layers and rigid innermost layer being optically transmissive
Implementation Method 2
a first camera mounted within the cavity, the first camera having a first central viewing axis; a second camera mounted within the cavity, the second camera having a second central viewing axis extending at an angle offset from the first central viewing axis, the first and second cameras each having fields of view configured to detect light emitting from the tip of the testing tool
Data Source
AI summary
A system for determining a three-dimensional position of a tip of a testing tool in an anatomic training model can be used for injection training. The system can include first and second cameras positioned in the anatomic training model. The first and second cameras can each detect an area of light emitted from the tip of the testing tool. The system can also include a processing unit configured to trace the emitted light away from a location of a centroid of the area of emitted light in the first camera and a location of a centroid of the area of emitted light in the second camera respectively, and calculate a three-dimensional position of the distal tip of the testing tool based on the locations of the centroids. The calculation can take into account refraction of the emitted light through an innermost layer of the training model.