Multi-Lumen IV Extension for In-Line Patency Checks
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Solution Overview
Problem
IV devices can experience patency issues while in use, leading to blockages that require replacement and cause patient trauma and medical complications.
Innovation Solution
A multi-lumen extension system with a fluidic and non-fluidic channel, incorporating a patency instrument housed within the non-fluidic channel, allows for periodic patency checks without disturbing the IV device, enabling blood draws and fluid infusions through the fluidic channel while maintaining the patency instrument in a sealed environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the IV device is removed to check or clear blockages, then patency issues can be addressed, but patient trauma increases and the IV site is compromised
Solution Approach 1:
A patency instrument is introduced through a separate access point (such as a hub or extension set) rather than removing the IV catheter from the blood vessel. This intermediary approach allows the catheter to remain in place while enabling patency checks and blockage clearance through the introduced instrument, thereby maintaining patient trauma-free access.
Solution Approach 2:
The IV access system is divided into separate functional components: the IV catheter remains implanted in the blood vessel for continuous access, while a separate patency instrument can be introduced through an access hub or extension set to perform patency checks. This segmentation allows independent operation of each function without compromising the other.
2Reliability
If the IV device is manipulated to clear blockages, then patency can be improved, but the IV site becomes compromised and trauma increases
Solution Approach 1:
Instead of manipulating the IV catheter directly at the insertion site, a patency instrument is introduced through an intermediary access point (hub or extension set) to clear blockages. This maintains the stability of the IV site while enabling effective patency management.
3Device complexity
If a single-lumen system is used, then the device is simple, but it cannot simultaneously provide fluidic access and patency checking
Solution Approach 1:
The system is divided into separate lumens: a first lumen for fluidic access (blood draws, infusions) and a second lumen for patency instrument delivery. This segmentation allows each lumen to be optimized for its specific function while enabling both functions to operate simultaneously without interference.
Solution Approach 2:
The IV access system is designed with multi-functionality by incorporating both a fluidic lumen for clinical procedures and a separate lumen for patency checks. This universal design allows a single device to perform multiple functions that would traditionally require separate equipment.
4Reliability
If the IV device is frequently replaced to maintain patency, then blockages are cleared, but patient trauma increases and medical complications arise
Solution Approach 1:
Patency instruments can be used to clear blockages and maintain patency before they become critical issues. This preliminary maintenance approach allows the IV catheter to remain in place longer, reducing the frequency of replacements and associated medical complications.
Solution Approach 2:
By introducing patency instruments through an access hub or extension set rather than removing the catheter, the system enables maintenance of IV patency without the trauma of frequent reinsertion and the associated medical complications.
Data Source
AI summary
A multi-lumen extension system may include a first lumen forming a fluidic channel within the multi-lumen extension system; a second lumen forming a non-fluidic channel within the multi-lumen extension system; a patency instrument housed within the second lumen; a seal between the first lumen and the second lumen to prevent fluid from entering the second lumen from the first lumen; and a grip formed along the second lumen and operatively coupled to the patency instrument housed within the second lumen to selectively advance the patency instrument along the second lumen.