Medical Instrument Acceleration Sensor for Moving Tissue Navigation
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Solution Overview
Problem
In medical interventions on moving tissue, existing navigation and tracking systems face challenges in accurately determining the position of medical instruments due to involuntary movements caused by breathing and heartbeat, leading to imprecise navigation.
Innovation Solution
A device and method that incorporate an acceleration sensor to detect movements of the medical instrument caused by moving tissue, allowing for precise determination of the instrument's position by correcting position data using measured acceleration values, enabling accurate tracking and navigation despite tissue movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If navigation and tracking systems are used to determine the position of medical instruments in the body, then the position can be visualized on a display unit, but the determination becomes imprecise due to involuntary movements of the tissue caused by breathing and heartbeat
Solution Approach 1:
The system transitions from a static position detection approach to a dynamic one by incorporating acceleration sensors that continuously measure movements of the tissue and instrument. The system adapts to changing conditions by detecting and compensating for tissue movements caused by breathing and heartbeat in real-time, making the navigation reliable despite the dynamic environment
Solution Approach 2:
The system implements feedback by using acceleration sensors to detect tissue movements and instrument movements, then using this information to calculate compensation values that are applied to correct the position data. This closed-loop feedback mechanism continuously refines the position determination to maintain precision despite tissue motion
2Measurement precision
If acceleration sensors are added to detect tissue movements, then position precision can be maintained, but the device complexity increases
Solution Approach 1:
The acceleration sensors serve multiple functions: they detect tissue movements, detect instrument movements, and provide data for calculating compensation values. This multi-functionality reduces the need for separate systems and minimizes overall device complexity while maintaining position precision
Solution Approach 2:
The system uses the same acceleration sensors that detect tissue movements to also track instrument movements. The instrument's own movement data is used to compensate for tissue motion effects, making the system self-sufficient and reducing the need for additional separate measurement systems
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
Enables precise tracking and navigation of medical instruments within moving tissue by quantifying and accounting for tissue movements, improving the accuracy of instrument positioning and image overlay on preoperative images.
Implementation Method 1
at least one acceleration sensor for detecting at least one movement of the instrument caused by the moving tissue
Data Source
AI summary
The invention relates to a device for a medical intervention in or on moving tissue of a living being, said device having a medical instrument provided for the intervention, a position detection system by means of which the position of the medical instrument in the body of the living being can be determined, and at least one acceleration sensor for recording at least one movement of the instrument caused by the moving tissue. The invention also relates to a medical instrument for a medical intervention in or on moving tissue of a living being, said medical instrument having at least one acceleration sensor and a sensor of a position detection system, as well as to an operating method for the device.