Thrombectomy Catheter Balloon Isolation Suction
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Solution Overview
Problem
Current mechanical thrombectomy devices are inefficient in removing blood clots without the use of lytic agents and pose risks of bleeding and embolism due to the mechanical nature of clot removal.
Innovation Solution
A balloon catheter assembly comprising a balloon module and a suction module, where the balloons are used to occlude and isolate the clot, allowing for mechanical removal with reduced risk of embolism through controlled suction and fragmentation, eliminating the need for lytic agents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If mechanical thrombectomy devices are used without lytic agents, then the risk of bleeding complications is reduced, but the mechanical efficiency of clot removal is poor
Solution Approach 1:
The device segments the clot removal process into distinct functional zones: a fragmentation section with cutting elements that break the clot into smaller pieces, and a suction section that removes the fragmented clot material. This segmentation allows mechanical clot removal without requiring lytic agents, improving efficiency while minimizing bleeding risks.
Solution Approach 2:
The device introduces a mechanical intermediary (the catheter with fragmentation and suction elements) between the clot and the bloodstream, enabling controlled clot removal. The fragmentation elements act as intermediaries that break down the clot structure, while the suction system serves as an intermediary to remove debris without direct mechanical extraction that could cause embolism.
2Productivity
If mechanical thrombectomy devices are used, then clot removal is achieved, but there is potential for embolism when clot portions break off and migrate
Solution Approach 1:
The device performs controlled segmentation of the clot into small fragments within the isolation chamber, preventing large clot portions from breaking off and migrating. The fragmentation occurs in a contained environment where suction simultaneously removes the debris, eliminating the embolism risk associated with uncontrolled mechanical clot disruption.
Solution Approach 2:
The device extracts clot material through a controlled suction mechanism that removes fragmented clot pieces directly from the isolation chamber. This extraction process prevents clot portions from remaining in the bloodstream where they could migrate and cause embolism, while maintaining the ability to effectively remove the entire clot.
3Object-generated harmful factors
If balloons are used to occlude and isolate the clot, then mechanical removal with reduced embolism risk is achieved, but the device complexity increases
Solution Approach 1:
The device merges multiple functions into a single integrated catheter structure: the balloons for isolation, the fragmentation elements for clot breakdown, and the suction system for debris removal. This consolidation achieves effective clot removal with reduced embolism risk while managing device complexity through functional integration rather than separate components.
Solution Approach 2:
The catheter serves multiple functions simultaneously: it isolates the clot using balloons, fragments the clot using cutting elements, and removes debris using suction. This multi-functionality reduces the need for multiple separate devices or procedural steps, managing complexity while achieving comprehensive clot removal with minimized embolism risk.
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
The device effectively removes blood clots with improved mechanical efficiency and reduced risk of complications such as bleeding and embolism, enhancing clot removal efficacy without the use of lytic agents.
Implementation Method 1
a suction sheath module (200)
Implementation Method 2
two balloons positioned on exterior surfaces of respective catheters
Data Source
AI summary
A method for removing a clot using and inserting a catheter balloon assembly, having proximal and distal ends including a catheter carrying a remotely inflatable occlusion balloon and another catheter carrying a mechanical device for moving a clot, into patient on one side of clot; a balloon-collared sheath, having a collar sheath with proximal and distal ends, the collar sheath having an open interior, and sealing valve for sealing the interior of the collar sheath, and inflatable collar balloon, disposed on the exterior distal end of said collar sheath, inserted on other side of clot; a suction module, having a suction sheath having proximal and distal ends, the suction sheath having an open interior, and sized to be inserted in a vein, attachable to a suction device. The balloons are inflated and the mechanical device is positioned near the clot, toward the balloon collared sheath towards the suction device.