Paediatric Catheter Location via ECG Signal Analysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods for inserting central venous catheters in pediatric patients often result in incorrect placement, ineffective treatments, and physical injuries due to blind procedures and catheter migration, with existing ECG-based systems being unreliable, especially in newborns and young children where anatomical changes and heart rate variability pose significant challenges.
Innovation Solution
A data processing apparatus and method that utilizes ECG signal analysis to determine the location of a catheter tip by identifying R-wave and P-wave peaks, employing machine learning algorithms and normalization techniques to account for patient-specific and age-related variations, providing real-time feedback for accurate catheter placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ECG-based systems are used to determine catheter location, then measurement precision is improved, but reliability deteriorates in newborns and young children due to anatomical changes and heart rate variability
Solution Approach 1:
The system dynamically adjusts analysis parameters including time window durations, amplitude thresholds, and frequency bands based on detected heart rate and patient age. This allows the ECG analysis to adapt to the varying physiological characteristics of pediatric patients, maintaining measurement precision across different developmental stages while improving reliability.
Solution Approach 2:
The system implements dynamic adaptation by continuously monitoring heart rate and adjusting the ECG signal analysis parameters in real-time. The time windows for wave detection, amplitude thresholds for peak identification, and filtering parameters are automatically modified based on the current heart rate and patient characteristics, enabling the system to remain reliable across varying physiological conditions.
2Ease of operation
If blind catheter insertion procedures are used, then ease of operation is improved, but object-affected harmful factors increase due to incorrect placement and physical injury
Solution Approach 1:
The system provides real-time feedback during catheter insertion by continuously analyzing ECG signals and displaying catheter location information. This feedback loop allows operators to monitor catheter advancement and adjust insertion depth based on electrical signal changes, maintaining procedural simplicity while eliminating the harmful effects of blind insertion through immediate location verification.
Solution Approach 2:
The system replaces mechanical blind insertion with an electrical field-based guidance system. Instead of relying solely on physical landmarks and tactile feedback, the system uses ECG signal analysis to provide electrical field guidance for catheter placement, reducing physical injury risks while maintaining ease of operation through non-invasive monitoring.
3Device complexity
If conventional ECG analysis methods are used, then device complexity is reduced, but measurement precision deteriorates due to inability to account for patient-specific variations
Solution Approach 1:
The system performs preliminary characterization of patient-specific ECG patterns before catheter insertion and during the procedure. By establishing baseline parameters and patient-specific signal characteristics in advance, the system can maintain relatively simple processing algorithms while achieving high measurement precision through pre-acquired physiological data.
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 solution enables precise and accurate determination of catheter location, reducing the risk of misplacement and physical injuries by using ECG signal analysis and machine learning to account for individual and age-related variations, thereby improving treatment efficacy and safety in pediatric patients.
Implementation Method 1
receiving an electrocardiogram (ECG) signal from a tip of a catheter inserted in a paediatric patient
Data Source
Figure 1~2
Figure 3a
Figure 3b
AI summary
When inserting a catheter or other medical equipment into a child or adolescent or other paediatric patient, ECG signals may be recorded from the catheter and the location of the catheter determined by analysing the ECG signals. A signal processor and user interface may receive recorded signals in real-time from the catheter while the catheter is inserted into the paediatric patient. The signal processor may analyse the ECG signals to determine the location of the catheter in the paediatric patient. The user interface may display the location of the catheter and other pertinent information to a user while the user is inserting the catheter. One method for determining the location may include determining R-wave and P-wave peaks of the ECG signal and determining the location from an average location of the R-wave and P-wave peaks in the ECG signal.