Blood Flow Guide Delivery Markers for Visual Release Positioning
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Solution Overview
Problem
Existing blood flow guide devices lack effective visual tracking and positioning methods, particularly for the release and retrieval control of retrievable devices.
Innovation Solution
A blood flow guide device conveying system with a push guide wire, support spring, friction gasket, and radiographic markers that allow visual tracking and positioning, using markers to indicate release and retrieval stages, and a friction gasket for stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If radiographic markers are added to enable visual tracking, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent applies radiographic markers (distal marker, proximal marker, complete release marker) that are visible under contrast imaging to enable visual tracking of the blood flow guide device during conveying, release, and retrieval processes. These markers allow operators to precisely determine device position and release status through imaging systems, directly improving measurement precision while accepting increased device complexity.
2Manufacturing precision
If multiple markers and components are added for precise positioning, then manufacturing precision is improved, but ease of manufacture deteriorates
Solution Approach 1:
The patent segments the blood flow guide device into multiple functional components with specific positioning functions: distal marker, distal spring, blood flow guide device, proximal marker, friction gasket, complete release marker, and support spring. Each component has precise dimensional specifications (e.g., gap of 1mm to 5mm between markers and components) that enable accurate positioning and control during the release process, thereby improving manufacturing precision through modular design.
3Reliability
If the friction gasket is made harder for better stabilization, then reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The patent specifies that the friction gasket should have a hardness of 30D to 40D, which provides optimal balance between stabilization during conveying and controllability during release. This parameter optimization ensures the friction gasket can reliably stabilize the device in the microcatheter cavity while still allowing controlled release when needed, resolving the contradiction between reliability and ease of operation.
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
Enables accurate and reliable visual control of the release and retrieval process, improving operation convenience and precision.
Implementation Method 1
the distal spring, the distal marker, the blood flow guide device, the proximal marker and the complete release marker are made of a radiographic material under contrast imaging
Implementation Method 2
the friction gasket is used for stabilizing the conveying of the blood flow guide device pushed by the push guide wire in the microcatheter cavity
Data Source
AI summary
A blood flow guide device conveying system comprises a blood flow guide device, a push guide wire, a support spring, a distal spring, a friction gasket, a distal marker, a proximal marker, and a complete release marker. The distal spring is provided at a distal end of the push guide wire. The distal marker is provided at a proximal end of the distal spring and configured to indicate a start state or completion state. The blood flow guide device is pre-mounted between the distal marker and the complete release marker. The friction gasket is provided on a distal end of the complete release marker. The proximal marker is provided on a distal end of the friction gasket. The friction gasket is used for stabilizing the blood flow guide device by pushing the push guide wire. The complete release marker is provided at a distal end of the support spring.