Hydrophobic Drip Chamber Interior for Optical Imaging Accuracy
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Solution Overview
Problem
Drip chambers for infusion tubes face issues with fluid droplets forming on the interior surface, causing errors in imaging and measurement due to splashing and condensation, which affect the accuracy of optical imaging.
Innovation Solution
A drip chamber with a hydrophobic interior surface that repels liquids and allows light to refract through without scattering, enabling clear optical imaging by preventing droplet formation and maintaining undistorted light transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a standard interior surface is used in the drip chamber, then droplets form on the surface due to splashing and condensation, but this causes errors in imaging and measurement
Solution Approach 1:
The interior surface of the drip chamber is modified with a hydrophobic coating that changes the surface energy parameters. This coating has a contact angle greater than 90 degrees with respect to the infusate, preventing droplet formation by altering how the liquid interacts with the surface, thereby eliminating imaging errors caused by droplets while maintaining optical clarity
Solution Approach 2:
The drip chamber incorporates a composite structure combining the base wall material with a hydrophobic coating layer. This composite approach maintains the structural integrity of the drip chamber while adding the surface property that repels liquid, solving both the structural and imaging accuracy requirements simultaneously
2Reliability
If a hydrophobic coating is applied to the interior surface, then droplet formation is prevented, but light refraction may be affected
Solution Approach 1:
The hydrophobic coating is applied selectively to specific regions of the interior surface where droplet formation occurs most frequently, such as areas prone to splashing or condensation. This localized application maintains hydrophobic protection where needed while preserving optimal light transmission in other regions, balancing imaging accuracy with illumination requirements
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 hydrophobic surface allows for accurate and precise optical imaging by eliminating spurious droplets and ensuring high-resolution imagery, improving the measurement of fluid levels and flow control in infusion tubes.
Implementation Method 1
The hydrophobic portion of the interior surface repels liquid contacting the hydrophobic coating
Implementation Method 2
The hydrophobic portion of the interior surface enables light to refract through the hydrophobic portion and the wall in the same manner as is the case when the hydrophobic portion is not present on the interior surface
Data Source
AI summary
A drip chamber for an infusion tube, including: a first end including a drip tube; a second end including an exit port; and a wall connecting the first and second ends and including an interior surface with a hydrophobic portion. The drip chamber includes a space enclosed by the interior wall and the first and second ends. The hydrophobic portion of the interior surface repels liquid contacting the hydrophobic coating. The hydrophobic portion of the interior surface enables light to refract through the hydrophobic portion and the wall in the same manner as is the case when the hydrophobic portion is not present on the interior surface.