Reagent Injection Apparatus Guide Wire Stabilization
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Solution Overview
Problem
Conventional reagent injection apparatuses face challenges in stabilizing the main tube within blood vessels, particularly when puncturing hard tissues, due to movement or rotation caused by reactive forces during needle insertion, which can lead to incomplete or inaccurate reagent delivery.
Innovation Solution
A reagent injection apparatus with a flexible main tube and two guide wires, where the second guide wire is supported by a branching support tube, allowing the reactive force to be distributed across the first guide wire, second guide wire, and support tube, eliminating the need for a balloon and reducing the apparatus's diameter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a balloon is provided on the main tube to ensure stable positioning inside the blood vessel, then the main tube can be stably positioned, but the diameter of the apparatus increases and insertion becomes more difficult
Solution Approach 1:
The invention removes the balloon component from the main tube, extracting the stabilizing function and replacing it with a guide wire support mechanism. The guide wire insertion section with support tube provides stability without requiring the balloon's radial expansion, thus reducing apparatus diameter while maintaining positioning stability.
Solution Approach 2:
The guide wire insertion section serves multiple functions: it supports the guide wire structurally, provides stabilization for the main tube, and enables precise positioning. This multi-functional design replaces the balloon's stabilizing role while adding guide wire support capability, eliminating the need for separate balloon inflation mechanism.
2Reliability
If the main tube is stabilized using a balloon, then puncturing of hard tissues can be achieved, but the apparatus complexity increases due to additional lumens and inflation mechanism
Solution Approach 1:
The invention merges the guide wire support function with the main tube stabilization function into a single integrated guide wire insertion section. This combination eliminates the need for separate balloon inflation mechanism and multiple lumens, reducing apparatus complexity while maintaining reliable puncturing capability through the combined support of guide wire and insertion section.
3Length of moving object
If the diameter of the main tube is reduced for easier insertion, then insertion becomes easier, but the ability to stabilize the main tube during puncturing of hard tissues is compromised
Solution Approach 1:
The invention segments the stabilization function into two components: the guide wire providing axial support and the guide wire insertion section providing structural rigidity. This segmentation allows the main tube to maintain smaller diameter for easy insertion while the combined guide wire and insertion section provide sufficient stability during puncturing of hard tissues.
Data Source
AI summary
A structure includes a main tube 2 that contains a needlelike tubular body lumen 10 through which a needlelike tubular body 3 is inserted, with a distal section 4 of the main tube 2 having a first guide wire insertion section 33 and second guide wire insertion section 35, respectively containing a first guide wire lumen 38 and second guide wire lumen 52 through which a first guide wire 32 and second guide wire 34 are inserted. This structure further has a support tube 62 whose tip remains a free end, wherein this support tube 62 accepts a part of the second guide wire 34 extending out of the second guide wire lumen 52 and thereby supports the second guide wire insertion section 35.