Segmented Thrombectomy Net Overlapping Subsections
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Solution Overview
Problem
Existing thrombectomy devices with segmented designs face challenges in ensuring rapid recanalization of occluded blood vessels due to thrombi easily escaping from gaps between sections.
Innovation Solution
A thrombectomy device with a segmented design featuring a thrombectomy net with slope, thrombectomy, and gathering sections, where the thrombectomy section is divided into independent subsections connected in an overlapping manner to form double-layer net structures, preventing thrombi from escaping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the thrombectomy device is designed with segmented sections for independent radial expansion, then the attachment to vascular wall is improved, but thrombi can escape from gaps between sections
Solution Approach 1:
The thrombectomy device is divided into multiple sections that can expand radially independently, allowing each section to attach to the vascular wall separately while maintaining overall structural integrity for reliable attachment
Solution Approach 2:
Adjacent thrombectomy sections are connected in an overlapping manner where one section partially overlaps with the adjacent section, creating a nested configuration that prevents thrombus escape while preserving independent expansion capability
2Object-generated harmful factors
If overlapping connections are added between sections to prevent thrombus escape, then thrombus containment is improved, but device complexity increases
Solution Approach 1:
The overlapping connection design integrates the containment function directly into the structural connection between sections, where the same overlapping elements that join sections also create the barrier against thrombus escape, thereby avoiding additional complex components
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 prevents thrombi from escaping during radial expansion and withdrawal, improving the success rate of thrombectomy and ensuring quick recanalization of occluded blood vessels.
Implementation Method 1
the thrombectomy net is a tubular hollow self-expanding net capable of automatically expanding radially, which is contracted after being compressed radially, and expands radially after a constraint of radial compression is released
Data Source
AI summary
Disclosed is a thrombectomy device with segmented design, and the device includes a thrombectomy net and a push rod fixedly connected with a proximal end of the thrombectomy net, where the thrombectomy net is a tubular hollow self-expanding net capable of automatically expanding radially, which is contracted after being compressed radially, and expands radially after a constraint of radial compression is released. The thrombectomy net includes a slope section, a thrombectomy section, and a gathering section which are sequentially connected from the proximal end to a distal end, where the thrombectomy section includes at least two thrombectomy subsections which are sequentially connected from the proximal end to the distal end and are relatively independent, and two adjacent thrombectomy subsections are locally connected, so that the two adjacent thrombectomy subsections are relatively independent during radial expansion.