Bent Gas Conduit Applicator Tip for Uniform Fluid Mixing
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Solution Overview
Problem
Existing medical devices for spraying two components that react rapidly are ineffective when used in close proximity to a target surface, leading to incomplete coverage and irregularities in the sprayed area.
Innovation Solution
An applicator tip with a geometric design featuring two fluid conduits and two gas conduits, where the distal gas tubes are bent at an angle relative to the fluid conduits, allowing for efficient mixing and spraying of fluids like thrombin and fibrinogen from a short distance, ensuring complete coverage and uniformity of the target area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If spraying is carried out in close proximity to the target surface using conventional devices, then the amount of material required is reduced, but the coverage becomes incomplete and irregular
Solution Approach 1:
The gas flow is divided into multiple streams through separate gas conduits, each directing gas at different angles toward the target surface. This segmented gas flow pattern creates better fluid dynamics for spray dispersion, enabling complete and uniform coverage even at close spraying distances where conventional single-stream gas flow fails
Solution Approach 2:
Different regions of the spray tip provide different functions: the bent distal gas tubes provide localized gas flow at specific angles (15°-35°) to achieve optimal spray dispersion at the target location, while the overall tip geometry is optimized for close-proximity application. This local optimization of gas flow angles enables uniform coverage without requiring distant spraying
2Manufacturing precision
If the distal gas tubes are bent at an angle relative to the proximal gas tubes, then the spray dispersion and coverage are improved, but the device complexity increases
Solution Approach 1:
The distal gas tubes are bent at angles of 15°-35° relative to the proximal gas tubes, creating a curved geometry that optimizes gas flow direction toward the target surface. This curvature enables the gas to disperse the spray components uniformly across the target area, achieving superior mixing and coverage patterns that straight tubes cannot provide
Solution Approach 2:
The gas conduits feature asymmetric geometry with bent distal sections at specific angles, creating non-uniform gas flow distribution that enhances spray dispersion. This asymmetric design, where distal tubes are angled differently from proximal tubes, optimizes the spray pattern for close-proximity application while maintaining manufacturability through standard bending processes
3Manufacturing precision
If the gas opening diameter is increased to improve material dispersion, then the mixing efficiency improves, but the device dimensions increase
Solution Approach 1:
Instead of increasing gas opening diameter in one dimension, the solution uses bent distal gas tubes that change the directional dimension of gas flow. The angled tubes (15°-35°) direct gas flow more effectively toward the target, improving spray dispersion and mixing efficiency through optimized flow direction rather than increased opening size, thus maintaining compact tip dimensions
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 applicator tip enables superior mixing and homogeneous coverage of the target area with a thinner, more uniform fibrin layer, reducing the amount of fibrin sealant required and improving targeting precision, even at close distances and challenging angles.
Implementation Method 1
at least two gas conduits for carrying a gas volume
Data Source
AI summary
The invention relates to an applicator tip for spraying and/or mixing at least two fluids that react together, the tip comprising: at least two fluid conduits for carrying the at least two fluids, each conduit having at least one outlet opening, the openings are positioned substantially on a same plane; at least two gas conduits for carrying a gas volume, each gas conduit comprises a proximal gas tube and a distal gas tube, each distal gas tube is bent as compared to the position of the proximal gas tube, and each distal gas tube has one gas opening positioned distal from the plane of the outlet openings; and a housing for accommodating the at least two fluid conduits and the at least two gas conduits. The device allows efficient spraying in close proximity to a surface.