Vascular Access Device with Local Reception Coil for MR Tracking
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Solution Overview
Problem
Magnetic resonance-guided interventions face challenges in tracking vascular access due to insufficient local information provided by magnetic resonance imaging, necessitating the use of additional imaging modalities like ultrasound or x-ray.
Innovation Solution
Incorporating a local reception coil element, either on the fixing portion or within a plaster, that is inductively coupled to an external magnetic resonance imaging device's coil, enhancing image quality and allowing better signal-to-noise ratio for magnetic resonance imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If magnetic resonance imaging is used for tracking during vascular access procedures, then non-ionizing radiation and better soft tissue contrast are achieved, but insufficient local information and tracking precision are obtained
Solution Approach 1:
A local reception coil element is introduced as an intermediary component between the magnetic resonance imaging system and the body region of interest. This coil element is positioned at the vascular access site to locally amplify and receive magnetic resonance signals, thereby enhancing the signal-to-noise ratio and providing sufficient tracking precision while maintaining the advantages of magnetic resonance imaging
Solution Approach 2:
Instead of relying on uniform whole-body magnetic resonance imaging with insufficient local detail, a local reception coil is placed specifically at the vascular access site to provide enhanced local signal reception. This creates a localized zone of high-resolution imaging capability that maintains overall system safety while achieving precise tracking where needed
2Measurement precision
If additional imaging modalities like ultrasound or x-ray are added for tracking, then tracking precision is improved, but device complexity and procedure time increase
Solution Approach 1:
The local reception coil element is integrated with the vascular access device itself, merging the vascular access function with the magnetic resonance signal reception function. This eliminates the need for separate additional imaging modalities and reduces overall system complexity while maintaining tracking precision
Solution Approach 2:
The vascular access device is enhanced to serve multiple functions: it provides vascular access and simultaneously acts as a local magnetic resonance signal receiver for tracking. This multi-functionality eliminates the need for separate dedicated tracking devices and reduces procedural complexity
3Measurement precision
If a local reception coil element is added to the vascular access device, then magnetic resonance signal reception and tracking precision are improved, but device complexity increases
Solution Approach 1:
The local reception coil element is pre-integrated into the vascular access device during manufacturing, so that when the device is applied to the patient, the coil is already in its optimal position. This preliminary integration eliminates the need for separate coil placement steps and reduces the operational complexity despite adding functional components
Solution Approach 2:
The local reception coil element is designed as a disposable component that is integrated with the single-use vascular access device. This approach allows for enhanced functionality without the need for expensive, reusable complex coil systems, as the coil's sole purpose is to provide local signal enhancement during the procedure and then be discarded
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 solution combines the vascular access device with a local reception coil, providing improved image guidance and tracking during magnetic resonance-guided procedures, reducing the need for additional imaging modalities and ensuring accurate positioning of the access site.
Implementation Method 1
the local reception coil element is configured to receive magnetic resonance signals from a body region, in particular comprising the access site and the vessel into which the vascular cannula is inserted
Implementation Method 2
a local reception coil element, either on the fixing portion or within a plaster, that is inductively coupled to an external magnetic resonance imaging device's coil
Data Source
Figure 1
Figure 2~3
AI summary
Vascular access device (1), comprising a vascular cannula (2) having a catheter portion (3) for insertion into a blood vessel, in particular a vein, of a patient and a fixing portion (4) for fixing the vascular cannula (2) to a skin of a patient, wherein the fixing portion (4) and/or a plaster (13) used to fix the fixing portion (4) to the skin comprises at least one local reception coil element (14, 14a, 14b) for receiving magnetic resonance signals.