CVAD Securement Assembly With Wrapped Tubing and Protective Lid
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Solution Overview
Problem
Conventional securement methods for central venous access devices (CVADs) and surgical drains fail to adequately protect patients from infections, dislodgement, catheter thrombosis, occlusion, and skin erosion, and are uncomfortable, especially for pediatric patients, due to improper securing of external ports and tubing.
Innovation Solution
A securement assembly comprising a base and lid with a central post, adhesive layer, and clips to stabilize and retain the external portion of CVADs and surgical drains, preventing dislodgement and infection, while being comfortable and easy to use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional securement methods are used for CVADs, then the device can be initially secured, but the external port and tubing are left dangling and insecure, increasing risk of dislodgement and infection
Solution Approach 1:
The securement device is divided into distinct functional segments: a base portion with adhesive for skin attachment, a central post for catheter wrapping, and a lid that encloses the assembly. This segmentation allows each component to perform its specific function optimally - the base provides stable anchoring, the post secures the catheter, and the lid protects the external port while preventing dangling tubing.
Solution Approach 2:
The catheter is wrapped around the central post and enclosed within the cavity formed by the base and lid, creating a nested configuration. The external port is positioned within the enclosed space, and the tubing is routed through the securement structure rather than hanging freely. This nesting ensures the catheter remains firmly secured and protected.
2Reliability
If conventional dressings are changed frequently to check for infection, then monitoring can be performed, but patient comfort decreases and skin irritation increases
Solution Approach 1:
The lid is made of transparent or translucent material, allowing visual inspection of the catheter and exit site through the dressing without requiring removal or frequent changes. This transparency enables continuous monitoring of the site for signs of infection while maintaining a secure, comfortable coverage that protects the patient's skin.
3Device complexity
If the external port is left unsecured and dangling, then the device structure remains simple, but the risk of catching on objects and dislodgement increases
Solution Approach 1:
The securement device utilizes three-dimensional spatial arrangement by enclosing the catheter and port within a structured assembly that has height, width, and depth. The lid creates a protective overhead cover, the base provides foundational support, and the central post establishes vertical anchoring. This dimensional structure prevents the port from dangling in a single plane and eliminates catching hazards.
Data Source
AI summary
A securement assembly for supporting and stabilizing a vascular access device, such as a tunneled central venous access devices (CVAD) or a surgical drain, is provided herein. The securement assembly may comprise a base and a lid. The base may include a central post about/around which the external portion of the access device or surgical drain may be wrapped. The lid may extend from the base and may be configured to cover the external portion of the access device or surgical drain (when installed). In various embodiments, the base and the lid collectively define an annular chamber around the central post of the base.