Magnetic Catheter Localization for Vascular Access
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Solution Overview
Problem
Current methods for establishing vascular access and aortic occlusion in emergency settings are complex, require significant expertise, and often fail due to environmental, patient, and equipment limitations, leading to complications and high mortality rates from hemorrhagic shock.
Innovation Solution
A system comprising a vessel cannulation device with a pressure sensor and expandable sheath, an occlusion catheter with magnetic tip localization, and a localizer for non-invasive detection, allowing for rapid, safe, and easy deployment of endovascular occlusion by inexperienced personnel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional vascular access methods are used, then expertise and experience are required, but the procedure becomes complex and time-consuming
Solution Approach 1:
The system pre-loads the sheath and catheter components in a sterile, ready-to-deploy configuration before patient contact. The sheath is pre-assembled with the catheter system, and all components are pre-positioned for immediate insertion, eliminating the need for complex intra-procedural assembly and reducing dependency on operator expertise.
Solution Approach 2:
The system enables non-expert operators to successfully perform vascular access and aortic occlusion by providing self-guiding features and automated deployment mechanisms. The magnetic tip localization and external tracking system guide the catheter automatically, reducing the skill barrier and allowing inexperienced personnel to achieve reliable results.
2Reliability
If traditional aortic occlusion methods are used, then significant expertise is required, but deployment time increases and mortality rates remain high
Solution Approach 1:
The occlusion catheter is pre-loaded within the sheath in a ready-to-deploy state before patient contact. The balloon is pre-inflated and positioned, allowing immediate occlusion upon sheath insertion. This pre-positioning eliminates the time required for intra-procedural catheter navigation and balloon deployment, enabling rapid response to hemorrhagic shock.
Solution Approach 2:
The system replaces complex manual mechanical manipulation with magnetic field-based guidance and tracking. The magnetic tip localization and external tracking system provide automated navigation, substituting the need for expert manual dexterity and reducing deployment time while maintaining high reliability.
3Measurement precision
If advanced equipment like ultrasound guidance is used, then measurement precision improves, but equipment cost and complexity increase
Solution Approach 1:
The system introduces a magnetic field as an intermediary for localization and tracking. Instead of using complex ultrasound or fluoroscopic equipment, the patent employs simple magnetic sensors and magnetic markers that provide accurate catheter tip localization through external tracking, eliminating the need for expensive and complex imaging equipment.
Solution Approach 2:
The system creates a magnetic field-based copy or representation of the catheter's position and orientation. The magnetic tip localization system generates a magnetic signature that can be tracked externally, providing accurate spatial information without requiring direct visual imaging equipment.
4Device complexity
If simple tools are used for venous cut down, then equipment complexity is reduced, but the procedure requires expertise and time
Solution Approach 1:
The system performs functions that would normally require expert skill automatically. The magnetic guidance and automated deployment mechanisms enable non-experts to successfully complete vascular access and aortic occlusion procedures that traditionally required significant training and experience, making the system self-sufficient regarding operator expertise.
Solution Approach 2:
The system replaces complex manual manipulation techniques with magnetic field-based automation. Instead of requiring operators to manually navigate catheters through complex anatomical pathways, the magnetic guidance system automates the positioning and deployment processes, significantly easing the operational difficulty.
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
Significantly reduces mortality related to traumatic hemorrhage by facilitating quick and safe vascular access and aortic occlusion, even in resource-limited environments, and can be used by non-experts.
Implementation Method 1
a pressure sensor coupled to the pressure chamber; a guidewire advancing member configured for advancing a guidewire, wherein the guidewire advancing member is operably coupled to the pressure sensor
Implementation Method 2
one or more magnetic field detectors mounted on a support, wherein the device is configured for placement on the outside of a patient's body proximate to the target area of the catheter tip, wherein the one or more magnetic field detectors are capable of detecting the magnetic field emitted by the magnetic catheter tip inside the body of a patient
Data Source
AI summary
The present invention provides for devices and methods for providing endovascular therapy, including facilitating establishment of vascular access, placement of endovascular sheaths, catheter tip localization, and administration of vascular occlusion. The inventions includes a vessel cannulation device, an expandable sheath, an occlusion catheter, and a localizer each of which may be provided separately or used as part of a system.