Catheter Securement Device Lock Tab Housing Mechanism
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Solution Overview
Problem
Conventional catheter securement units, such as tapes, patches, and sutures, fail to properly secure catheter assemblies to the skin, leading to undesirable movement, complications like dislodgment, phlebitis, extravasation, and bloodstream infections.
Innovation Solution
A catheter securement device featuring a base with lock tabs and a housing with lock handles, which securely encloses the catheter assembly, preventing movement and ensuring stable attachment to the skin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional catheter securement units (tapes, patches, sutures) are used to secure the catheter assembly to the skin, then the catheter assembly can be attached to the skin, but the catheter assembly experiences undesirable movement and instability during use
Solution Approach 1:
The securement device is divided into distinct functional segments: a base portion for skin attachment, a housing portion for catheter engagement, and lock tabs for securing the housing to the base. This segmentation allows each component to perform its specific function optimally, with the base providing stable skin attachment and the housing providing firm catheter engagement, thereby resolving the contradiction between stability and reliability.
Solution Approach 2:
The housing portion is designed to receive and enclose the catheter assembly within its internal cavity, creating a nested structure where the catheter is protected and stabilized by the housing. This nesting arrangement prevents undesirable movement of the catheter while maintaining secure attachment to the skin through the base, thus improving both stability and reliability simultaneously.
2Ease of manufacture
If conventional securement units are used, then the catheter assembly can be attached to the skin, but complications such as dislodgment, phlebitis, extravasation, and bloodstream infections occur
Solution Approach 1:
The securement device acts as an intermediary between the catheter assembly and the skin, providing a controlled interface that eliminates direct contact between the catheter and skin while ensuring secure attachment. The base portion with adhesive provides stable skin attachment without requiring sutures, and the housing portion protects the catheter insertion site, thereby reducing infection risk and complications while maintaining ease of manufacture.
Solution Approach 2:
The securement device is designed as a disposable single-use component that is discarded after a specific period or when no longer needed. This eliminates the risk of long-term complications such as infections associated with reusable securement methods, while the simple design keeps manufacturing costs low. The disposable nature ensures that each patient receives a sterile, clean securement device, reducing infection risk without complicating the manufacturing process.
3Stability of the object's composition
If the catheter assembly is secured tightly to prevent movement, then stability is improved, but the device complexity increases with additional components
Solution Approach 1:
The securement device merges multiple functions into a single integrated unit: the base portion combines skin attachment functionality with structural support, while the housing portion combines catheter engagement with protection of the insertion site. The lock tabs serve dual purposes by both securing the housing to the base and providing a mechanism for easy release. This merging of functions achieves stable catheter secment without excessive structural complexity.
Solution Approach 2:
The securement device is designed with universal applicability, where the base portion can be attached to various skin surfaces and the housing portion can accommodate different catheter types. The lock tab mechanism provides both securement and release functions, and the overall design works with various catheter assemblies. This multi-functionality achieves stable catheter secment without requiring complex, specialized components for each specific application.
Data Source
AI summary
A catheter securement device (100) for use with a catheter assembly (10) includes abase (110) configured to be removably secured to a skin (20) of a user (22), a plurality of lock tabs (140) fixedly attached to the base (110) and extending from a first major surface (112) of the base (110), and a housing (160) configured to be placed on the first major surface (112) of the base (110). The housing (160) and the first major surface (112) of the base (110) at least partially enclose the catheter assembly (10) there-between. The housing (160) includes a plurality of lock handles (162). Each lock handle (162) from the plurality of lock handles (162) defines an aperture (164) therethrough. Each lock tab (140) is configured to be received through the aperture (164) of a corresponding lock handle (162) from the plurality of lock handles (164). Furthermore, each lock tab (140) is configured to be detachably attached to the first major surface (112) of the base (110), such that the housing (160) is removably secured to the base (110).