MRI Compatible Intrabody Fluid Transfer Device
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Solution Overview
Problem
Current medical procedures for aspirating or delivering substances to deep brain structures are invasive, costly, and time-consuming, requiring multiple transports between surgical rooms and imaging scanners, increasing the risk of infection and inefficiency.
Innovation Solution
Development of MRI-compatible fluid transfer devices and systems, including a semi-rigid polymeric cannula body and guide sheath with measurement indicia, allowing for precise aspiration or delivery procedures within an MRI scanner without the need for multiple room transfers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional surgical resection is performed for deep brain structures, then complete removal of the structure can be achieved, but the procedure becomes highly invasive and potentially not feasible
Solution Approach 1:
The patent extracts only the fluid content from the intracranial structure through aspiration, rather than removing the entire structure surgically. This allows debulking the structure to relieve pressure while avoiding the high invasiveness of surgical resection, particularly for deep brain structures
Solution Approach 2:
The patent introduces an MRI-compatible aspiration device as an intermediary tool that enables fluid removal without direct surgical intervention. The device includes MRI-compatible components such as a stylet, guide sheath, and adapter that allow the procedure to be performed under MRI guidance with minimal invasiveness
2Reliability
If multiple transports between surgical room and CT scanner are performed, then debulking can be monitored and adjusted, but the procedure becomes time-consuming and increases infection risk
Solution Approach 1:
The patent merges the aspiration procedure and imaging monitoring into a single location by performing both steps within the MRI scanner. The MRI-compatible device allows real-time imaging during the procedure, eliminating the need for separate transports to CT scanner and reducing both time and infection risk while maintaining monitoring capability
Solution Approach 2:
The patent enables continuous monitoring and adjustment of the aspiration procedure without interruption by performing both steps in one location. The MRI scanner allows real-time imaging while the aspiration device remains in place, maintaining continuous useful action rather than interrupting for transport
3Adaptability or versatility
If MRI-compatible polymeric components are used, then the procedure can be performed within the MRI scanner, but the device complexity increases
Solution Approach 1:
The patent segments the aspiration device into multiple MRI-compatible polymeric components including a stylet, guide sheath, adapter, and cannula. Each component is separately designed and assembled, which manages the complexity by breaking down the overall device into manageable segments that can be individually manufactured and sterilized
Data Source
AI summary
Systems and methods for transferring fluid to or from a subject use a set of MRI compatible components that can aspirate intrabody structure and/or fluids. The components include a device guide, a semi-rigid guide sheath configured to slidably extend through the device guide, a stylet releasable coupled to the guide sheath and extending a fixed distance out of a distal end thereof, and a cannula coupled to flexible tubing that is releasably interchangeably held in the guide sheath in lieu of the stylet.