Catheter Assembly ECG Confirmation
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Solution Overview
Problem
Current catheter placement methods lack effective means to confirm the precise positioning of the catheter tip within the vasculature, particularly near heart nodes, and to detect any subsequent movement, which can lead to improper drug delivery and patient safety risks.
Innovation Solution
A catheter assembly with integrated conductive pathways that allow for the detection of ECG signals from the heart, enabling initial placement confirmation and subsequent reconfirmation of the catheter tip's position, utilizing both intravascular and skin-based ECG signals to ensure accurate positioning and prevent undesired repositioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional catheter placement methods are used, then the placement process is simple, but the precision of catheter tip positioning is insufficient
Solution Approach 1:
The patent combines multiple conductive pathways (first and second conductive pathways) within a single catheter assembly, integrating both intravascular ECG detection and skin-based ECG reference detection capabilities into one device. This merging allows precise catheter tip positioning through comparative ECG signal analysis while maintaining a unified catheter structure.
Solution Approach 2:
The catheter assembly serves multiple functions: it delivers medication or fluids through its lumen, positions itself within the vasculature, and simultaneously detects ECG signals through integrated conductive pathways. The conductive pathways enable both initial placement confirmation and subsequent reconfirmation of catheter tip position, making the device multi-functional rather than requiring separate devices for each function.
2Reliability
If no confirmation method is used, then the device complexity is low, but the reliability of catheter placement is poor
Solution Approach 1:
The patent implements feedback mechanisms where ECG signals detected by the conductive pathways are analyzed to provide real-time information about catheter tip position. The system continuously monitors ECG signals and provides feedback to confirm proper catheter placement near heart nodes, allowing for adjustment if positioning is incorrect. This feedback loop significantly improves placement reliability.
Solution Approach 2:
The catheter assembly is equipped with conductive pathways that enable preliminary confirmation of catheter tip placement before actual use. By detecting ECG signals during the placement process itself, the system allows clinicians to verify correct positioning in advance, preventing improper drug delivery and ensuring patient safety before the catheter is fully utilized.
3Measurement precision
If ECG signal detection is implemented, then the measurement precision of catheter position is improved, but the device complexity increases
Solution Approach 1:
The patent uses ECG signals as an intermediary to indirectly determine catheter tip position. Rather than requiring direct mechanical or optical measurement systems within the catheter, the conductive pathways detect electrical signals from the heart that serve as a mediator to infer catheter location. This intermediary approach achieves precise positioning without requiring complex internal sensing mechanisms.
Solution Approach 2:
The patent replaces potential mechanical positioning systems with an electrical field-based detection method. Instead of using mechanical sensors, moving parts, or complex optical systems to determine catheter position, the invention uses electrical conduction pathways to detect ECG signals, substituting a simpler electrical measurement approach for what would otherwise require complex mechanical or optical positioning 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
The catheter assembly effectively assists in placing the catheter tip near desired heart nodes and ensures that it remains in the correct position, enhancing the accuracy of drug delivery and reducing patient safety risks by using ECG signals for real-time monitoring.
Implementation Method 1
The conductive pathways are configured to assist with initial placement of the catheter assembly into the vasculature or other suitable location of the patient by enabling ECG signals emanating from the heart of the patient to be detected
Data Source
AI summary
A catheter assembly including one or more conductive pathways to assist with placement of the catheter assembly into a patient's vasculature by enabling ECG signals emanating from the patient's heart to be detected, and a method for reconfirming an initial position of a distal end of a catheter tube of the catheter assembly. The conductive pathways can be configured to reconfirm via ECG signal detection proper placement of the catheter tube at a time subsequent to initial catheter placement into the vasculature. The catheter assembly can include an outer conductive pathway deposited on an outer surface of the catheter tube. The outer conductive pathway can have a distal end located distal to a portion of the catheter tube at a skin insertion site when the catheter tube is inserted into a patient.