Electromagnetic Positioning Guidance for Enteral Tube Insertion
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Solution Overview
Problem
Existing electromagnetic positioning guidance systems for enteral feeding tube insertion face challenges in maintaining accuracy due to subject movement and dynamic environments, requiring calibration and lacking real-time reliability.
Innovation Solution
An electromagnetic positioning guidance system that includes an electromagnetic field generator, a plate sensor, a reference sensor, and a registration sensor, along with processing circuitry to generate a 3D anatomic map, allowing for accurate tracking of the insertion device's position and orientation independent of subject movement and field generator deviations, facilitating successful medical procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electromagnetic positioning guidance systems are used for enteral feeding tube insertion, then real-time tracking capability is provided, but reliability is difficult to obtain due to subject movement and dynamic environment
Solution Approach 1:
The system dynamically adapts to subject movement by continuously updating the coordinate transformation matrices based on real-time sensor data from multiple anatomical locations. The tracking system maintains reliability by adjusting to changing environmental conditions and subject positions without requiring recalibration, making the system both reliable and adaptable to dynamic clinical environments.
2Measurement precision
If electromagnetic positioning guidance systems are used, then real-time tracking is achieved, but calibration is required which delays the procedure
Solution Approach 1:
The system performs preliminary coordinate system registration by placing sensors on multiple anatomical landmarks (sternum, xiphoid process, iliac crest) before the insertion procedure begins. This preliminary setup establishes the transformation matrices needed for accurate tracking throughout the procedure, enabling real-time positioning accuracy without requiring time-consuming calibration steps during the actual insertion process.
3Measurement precision
If multiple sensors are positioned on the subject to define coordinate systems, then positioning accuracy independent of subject movement is achieved, but device complexity increases
Solution Approach 1:
The system segments the anatomical reference framework into multiple independent sensor positions placed at key anatomical landmarks (sternum, xiphoid process, iliac crest). Each sensor independently contributes to defining the coordinate system, and the processing circuitry integrates these segmented measurements to achieve high positioning accuracy while maintaining manageable system complexity through modular sensor placement.
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
The system ensures reliable and accurate real-time tracking of the insertion device, enhancing the precision and safety of enteral feeding tube placement by providing a dynamic and calibration-free solution.
Implementation Method 1
an electromagnetic field generator configured to generate an electromagnetic field covering a treatment area
Implementation Method 2
read signals obtained from the plate sensor, the reference sensor and the registration sensor, calculate a position and orientation
Data Source
AI summary
There is provided herein a system and a method for an insertion device positioning guidance system comprising: an electromagnetic field generator configured to generate an electromagnetic field covering a treatment area; a plate sensor configured to be positioned within the treatment area in a location defining an orientation of a subject; a reference sensor configured to be positioned, within the treatment area, on the subject's torso, the reference sensor is configured to define a reference coordinate system representing the position and orientation of the subject's torso relative to said field generator; a registration sensor configured to mark at least a first and a second anatomic locations relative to the reference coordinate system; and a processor configured to operate said field generator, read signals obtained from said the plate sensor, said reference sensor and said registration sensor, calculate a position and orientation thereof relative to said field generator, generate a 3D anatomic map representing the torso of the subject and the first and second anatomic locations, said processor is further configured to facilitate visualization on the 3D anatomic map of a position, orientation and/or path of a tip sensor, located in a distal tip section of the insertion device, with respect to the first and second anatomic locations, independent of the subject's movement and independent of deviations in the position and/or orientation of said field generator, thus determination of a successful medical procedure is facilitated.