Distally-Facing Side Port Catheter Adapter Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Catheter assemblies experience fluid stagnation and turbulence due to dead spaces, leading to fluid accumulation and potential bacterial growth, which necessitates frequent removal and replacement.
Innovation Solution
A catheter assembly with a distally-facing side port lumen and a deflector that directs fluid towards the septum, reducing dead spaces by facilitating flushing and preventing fluid stagnation, and an optional deflector with a protrusion to enhance fluid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fluid flows through the PIVC assembly, then fluid infusion and blood collection functions are achieved, but fluid stagnation and turbulence occur in dead spaces leading to bacteria accumulation
Solution Approach 1:
The patent removes the traditional proximal-facing side port configuration that creates dead spaces. By extracting this problematic structural element and replacing it with a distally-facing side port, the design eliminates the stagnation zones where fluid accumulation and bacterial growth occur, while preserving the catheter's infusion and collection functions
Solution Approach 2:
The patent inverts the conventional orientation of the side port lumen from proximal-facing to distally-facing. This reversal changes the fluid flow dynamics, allowing flush solution to effectively clear the entire lumen including areas near the catheter tip, thereby preventing dead space formation and bacterial accumulation
2Ease of operation
If the side port lumen is proximal-facing, then fluid can be infused through the side port, but fluid becomes trapped proximate the distal face of the septum creating dead space
Solution Approach 1:
The patent extracts the problematic proximal-facing side port configuration that traps fluid. By removing this design element and implementing a distally-facing side port, the system maintains side port infusion capability while eliminating the dead space where fluid becomes trapped
Solution Approach 2:
The patent changes the spatial orientation of the side port lumen from a proximal-facing configuration to a distally-facing configuration. This dimensional reorientation allows flush solution to flow in a direction that clears all lumen areas, preventing fluid trapping while maintaining infusion functionality
3Productivity
If fluid flow is non-laminar in the PIVC assembly, then fluid can be infused, but fluid separation and turbulence lead to stagnation and bacteria accumulation
Solution Approach 1:
The patent inverts the conventional side port orientation to distally-facing, which fundamentally changes the flow pattern. This inversion creates more uniform laminar flow throughout the lumen, preventing the turbulence and fluid separation that lead to stagnation and bacterial accumulation, while maintaining infusion productivity
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 solution effectively reduces fluid stagnation and bacterial growth by ensuring smooth fluid flow, reducing the need for frequent catheter replacement and minimizing infection risks.
Implementation Method 1
the lumen of the side port may be distally-facing, which may facilitate flushing of fluid trapped proximate a distal face of the septum
Implementation Method 2
the catheter adapter may include a deflector that may be configured to direct fluid flowing into the lumen of the catheter adapter from the side port towards the septum
Data Source
AI summary
A catheter assembly may include a catheter adapter, which may include a distal end, a proximal end, a lumen extending between the distal end and the proximal end, and a side port. A septum may be disposed within the lumen of the catheter assembly. The side port may include a lumen in fluid communication with the lumen of the catheter adapter. The lumen of the side port may be distally-facing, which may facilitate flushing of fluid trapped proximate a distal face of the septum. The catheter assembly may include a catheter secured within the catheter adapter and extending distally from the catheter adapter.