Catheter Micro-Textured Surface Capillary Adhesive Spread
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Solution Overview
Problem
The existing methods for securing intravenous catheters to patients are time-consuming, cumbersome, and pose an increased risk of infection due to the need for manual application of adhesive strips or lengthy curing times of liquid tissue adhesives.
Innovation Solution
A catheter assembly with a micro-textured surface that utilizes capillary action to spread and form a thin film or micro-droplets of liquid tissue adhesive, facilitating quicker adhesion and reducing the time required for securement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If liquid tissue adhesive is dispensed in large drops, then adhesion strength is achieved, but curing time is prolonged
Solution Approach 1:
The catheter hub incorporates a porous foam material that absorbs liquid tissue adhesive through capillary action, distributing it throughout the porous structure. This increases the surface area for adhesion while reducing the volume of adhesive needed, thereby maintaining bond strength while significantly reducing curing time from minutes to seconds
Solution Approach 2:
The invention changes the physical state and distribution of the adhesive by absorbing it into the foam matrix, transforming large drops into a distributed network of adhesive throughout the porous structure. This parameter change enables faster curing while maintaining adequate adhesion strength
2Reliability
If adhesive strips are manually applied by clinician, then catheter is secured to patient skin, but process is time-consuming and increases infection risk
Solution Approach 1:
The catheter hub with integrated foam material performs self-securing by absorbing the liquid tissue adhesive and bonding directly to the patient's skin. This eliminates the need for manual application of separate adhesive strips by the clinician, reducing securement time and infection risk while maintaining reliable attachment
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 micro-textured surface significantly reduces the time needed for the adhesive to achieve bond strength, enhancing security and reducing infection risk by promoting faster curing and increased adhesion strength.
Implementation Method 1
the second portion of the external surface including a micro-textured surface configured to spread drops of a liquid tissue adhesive across the second portion of the external surface by capillary action to form a thin film and/or form micro-droplets of the liquid tissue adhesive
Data Source
AI summary
A catheter assembly and a method of manufacturing are described. A catheter assembly comprises a catheter body comprising a proximal end, a distal end, and a lumen formed by an inner wall of the catheter body that extends between the proximal end and the distal end along a longitudinal axis. A device may include the catheter body further comprising an external surface that extends between the proximal end and the distal end, the external surface comprising a first portion and a second portion. A device may include the second portion of the external surface including a micro-textured surface configured to spread drops of a liquid tissue adhesive across the second portion of the external surface by capillary action to form a thin film and/or micro-droplets of the liquid tissue adhesive to achieve faster curing and hence adhesion between catheter to skin.