MRI-Compatible Cannula and Sheath Kit for Single-Session Intervention
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Solution Overview
Problem
Interventional procedures under MRI are limited by the lack of suitable tools, requiring multiple patient visits and multiple imaging modalities, which affect accuracy and increase costs and time to treatment.
Innovation Solution
Development of medical devices and kits for use under MRI, including cannulas and sheaths, with MRI-compatible materials and markers for precise positioning and dilation, enabling single-session procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple imaging modalities and multiple patient visits are used, then comprehensive diagnosis and treatment can be achieved, but the time to treatment increases and costs increase
Solution Approach 1:
The patent combines MRI imaging with interventional tools and real-time guidance systems into a single integrated system. This allows visualization, biopsy, and treatment to be performed during a single patient visit rather than requiring multiple separate visits across different modalities, thereby reducing time to treatment while maintaining diagnostic accuracy
Solution Approach 2:
The medical device system is designed with multi-functionality, incorporating imaging capabilities, biopsy functions, and treatment delivery within a single platform. This universal system eliminates the need for patients to undergo multiple specialized visits and enables comprehensive care in one session
2Ease of operation
If software fusion of MRI with ultrasound is used, then guidance for biopsy can be provided, but image overlay issues and compression shifting occur
Solution Approach 1:
The patent replaces software-based image fusion with direct real-time MRI guidance. Instead of using computational methods to overlay and fuse images from different modalities, the system uses direct MRI visualization to guide the biopsy procedure, eliminating software-related image overlay issues and compression shifting artifacts
Solution Approach 2:
The patent introduces real-time MRI imaging as an intermediary guidance mechanism between the diagnostic imaging phase and the biopsy intervention. This real-time MRI guidance serves as a mediator that provides continuous, accurate anatomical reference without the computational artifacts inherent in post-processing software fusion
3Reliability
If multiple patient visits are required for visualization, biopsy, and treatment, then each procedure can be performed with appropriate preparation, but the overall treatment cost increases
Solution Approach 1:
The patent merges visualization, biopsy, and treatment procedures into a single integrated intervention performed under real-time MRI guidance. By combining these previously separate steps into one procedure, the system reduces the total number of visits and associated costs while maintaining the quality and reliability of each individual procedure through specialized equipment and real-time monitoring
Data Source
AI summary
Example medical devices for performing treatment under magnetic resonance imaging and related methods are described. An example medical device includes a cannula and a plug. The cannula has a proximal end, a distal end, a first portion, a second portion, and a main body that defines a lumen and a passageway. The first portion extends from the distal end toward the proximal end. The second portion extends from the first portion toward the proximal end. The first portion is formed of first material. The second portion is formed of a second material that is different than the first material. The plug is disposed within the passageway and has a main body that defines a passageway in fluid communication with the lumen defined by the cannula. The plug is formed of a third material that is different than the second material.