Integrated Catheter Dressing with Flushing Mechanism
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Solution Overview
Problem
The current standard catheter placement and flush methodology is complex, non-sterile, and prone to sterility breaches, leading to increased catheter infections and frequent replacements due to the difficulty in maintaining sterility during the process.
Innovation Solution
A sterile catheter-dressing system with an integrated saline flush mechanism that simplifies the catheter insertion process by using a needle containment device as both a handle and a means to inject sterile saline directly into the catheter, allowing for a reproducible, fully sterile, and durably sealed dressing placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate sequential steps are used for catheter insertion and flushing with non-sterile gloves, then the procedure can be performed with standard equipment, but sterility is compromised and device complexity increases
Solution Approach 1:
The patent combines the needle containment device, flushing mechanism, and hub cap device into an integrated assembly. The hub cap device includes a腔 chamber for receiving the needle and a port for fluid injection, merging multiple functions (needle containment, flushing, and hub protection) into a single device that maintains sterility while simplifying the procedure
Solution Approach 2:
The hub cap device serves multiple functions: it contains the needle after insertion, provides a port for saline flushing, and seals the hub. This multi-functional design eliminates the need for separate devices and manual manipulation steps, reducing procedural complexity while maintaining sterility
2Ease of operation
If multiple one-handed maneuvers are performed at multiple time points, then the procedure can be completed with basic equipment, but the risk of sterility breach increases and time consumption increases
Solution Approach 1:
The hub cap device is pre-assembled with the needle containment chamber and flushing port before the procedure. The saline flush is prepared in advance within the device, eliminating the need for separate syringe preparation and attachment steps. This preliminary preparation reduces the number of manual maneuvers required during the procedure
3Reliability
If a non-sealing dressing is used to cover the catheter hub, then the catheter can be secured, but sterility cannot be maintained over time leading to infections
Solution Approach 1:
The hub cap device acts as an intermediary sealing barrier between the sterile catheter system and the external environment. It includes a seal that circumferentially seals around the catheter hub, maintaining sterility more effectively than traditional non-sealing dressings. The dressing is applied over this sealed hub cap device, ensuring continuous sterility maintenance
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
This integrated system simplifies the catheter insertion and dressing process, maintains sterility, reduces the risk of infection, and eliminates the need for multiple awkward maneuvers, enabling routine use of sterile gloves and durable sealing of the catheter site.
Implementation Method 1
transferring a volume of an injectable agent into an inner lumen of the implantable catheter
Implementation Method 2
The circumferential seal blocks the backflow of blood into the catheter hub
Data Source
AI summary
Methods and devices are disclosed herein that generally involve a sterile catheter-dressing system that allows for integrated injection of fluids, e.g., a saline flush, during the process of catheter insertion and sterile dressing placement. Such methods and devices can be used as a fully integrated catheter insertion system, or to convert existing catheter insertion devices and methods into integrated flush and sterile sealing catheter-dressing systems. Such methods and devices can greatly simplify the catheter insertion process, and can allow the reproducible placement of a fully sterile and flushed vascular catheter, as well as the placement of a durably sterile circumferentially sealing and securing dressing.