ECG-Based Catheter Positioning Adapter
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Solution Overview
Problem
Current methods for positioning endovascular devices, such as central venous catheters, lack precision and rely heavily on chest X-rays, which are not always accurate for discriminating between specific locations in the cardiovascular system, and remote monitoring of heart conditions is limited by complex signal acquisition and communication challenges.
Innovation Solution
A computer-based method using electrocardiogram (ECG) signals to accurately position endovascular devices by processing ECG waveforms to calculate P-wave amplitudes and spectral powers, determining the device's location based on these calculations, and displaying the information to the user, thereby reducing the need for chest X-rays and enhancing remote monitoring capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If chest X-ray is used for confirming catheter tip location, then location confirmation is achieved, but radiation exposure increases and real-time guidance is not available
Solution Approach 1:
The patent replaces the mechanical/radiological system (chest X-ray) with an electrical signal-based system (ECG guidance). The ECG guidance system uses electrical potentials generated by the heart to determine catheter tip location, eliminating the need for ionizing radiation while providing real-time feedback during the procedure.
Solution Approach 2:
The patent introduces ECG signals as an intermediary to indirectly determine catheter tip location. Instead of directly imaging the catheter tip with X-rays, the system uses the heart's electrical activity as a mediator to infer the catheter's position based on characteristic ECG waveform changes at different anatomical locations.
2Speed
If electromagnetic guiding systems are used, then real-time guidance is provided, but accuracy in discriminating specific locations is limited
Solution Approach 1:
The patent utilizes changes in ECG waveform parameters (amplitude, morphology, electrical potentials) that occur as the catheter moves through different anatomical locations. By monitoring these parameter changes in real-time, the system achieves both rapid guidance and precise location discrimination, overcoming the limitations of electromagnetic systems that rely on fixed reference points.
3Adaptability or versatility
If ECG-based systems are used for remote monitoring, then monitoring capability is enhanced, but signal acquisition complexity increases
Solution Approach 1:
The patent makes the ECG system multi-functional by using the same ECG guidance technology for both real-time catheter positioning during the procedure and for post-procedure remote monitoring. This universal application reduces overall system complexity compared to having separate specialized systems for each function.
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 method improves the accuracy of endovascular device placement and reduces the reliance on chest X-rays, providing real-time guidance and enabling more effective remote monitoring of heart conditions by utilizing ECG signals to determine precise locations within the cardiovascular system.
Implementation Method 1
The electrical conduction system of the heart creates specific electrical signals, electrical energy distributions and behaviors thereof which are indicative of specific locations in the thoracic cavity and/or of specific heart functions or conditions.
Implementation Method 2
The heart's electrical activity produces currents that radiate through the surrounding tissue to the skin. When electrodes are attached to the skin, they sense these electrical currents and transmit them the electrocardiograph.
Data Source
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AI summary
An adaptor for endovascular electrocardiography, comprising: a member having a first end, a second end, and an inner lumen, the first end connectable to a luer of a catheter and the second end connectable to a syringe, such that fluid from the syringe is flushed into the catheter through the inner lumen; and a metal insert, in particular a metal ring, disposed along the inner lumen of the member and located inside the member, the metal ring connecting through a sealed electrical connection to an outer side of the member. An assembly for endovascular electrocardiography, comprising: the adaptor; and a connector separate from the member of the adaptor coupled to the metal ring.