Catheter Securing Device With Closed Perimeter Grooves
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Solution Overview
Problem
Existing devices for securing peripheral venous catheters are ineffective in preventing unintentional decoupling under cross tensile loads due to open channels and incomplete compression, leading to inadequate retention.
Innovation Solution
A device with tubular-shaped fastening extremities and a connecting section forming a closed perimeter outline, featuring longitudinal grooves and a tongue-and-groove joint to securely compress and immobilize the catheter, preventing decoupling and sliding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the catheter is retained in a U-shaped channel with locking closures, then the catheter is fastened in a curved arrangement, but the catheter can come out through the grooves formed between the locking closures under cross tensile loads
Solution Approach 1:
The clamp body is divided into two separate clamp halves (first clamp half and second clamp half) that can be positioned on opposite sides of the catheter. Each clamp half independently compresses the catheter from different directions, creating multiple compression points that prevent the catheter from escaping under cross tensile loads.
Solution Approach 2:
The compression surfaces of the clamp halves are designed with specific geometries (such as C-shaped cross-sections or grooves) that provide localized compression at critical points along the catheter. This localized compression ensures that the catheter is securely held at specific positions while allowing the overall structure to accommodate the curved safety loop arrangement.
2Ease of operation
If the channel cross-sections are U-shaped or C-shaped with locking closures, then the catheter can be inserted and retained, but the channel is not closed completely allowing inadvertent release
Solution Approach 1:
The clamp device incorporates a dynamic compression mechanism where the two clamp halves can move relative to each other to apply compression force. This dynamic adjustment allows the clamp to transition from an open state (for easy catheter insertion) to a closed compressed state (for secure retention), providing both ease of operation and reliable fastening.
Solution Approach 2:
The locking closure mechanism is extracted from a static integrated structure and implemented as a separate adjustable component that can be independently positioned and activated. This allows the compression force to be applied only when needed for retention, while maintaining an open, accessible channel structure during insertion.
3Ease of operation
If the catheter fastening means are longitudinally open, then the catheter can be inserted, but the compression effectiveness is limited allowing movement against longitudinal tensile loads
Solution Approach 1:
The clamp halves are designed to dynamically close and compress the catheter after insertion. The compression mechanism can be activated after the catheter is in place, transforming the structure from an open insertion-friendly configuration to a closed high-compression configuration that resists longitudinal tensile loads.
Solution Approach 2:
The insertion function and compression function are merged into a single integrated device structure. The same clamp halves that provide the open channel for insertion also provide the compression surfaces and locking mechanism, eliminating the need for separate components and ensuring that compression is applied directly where insertion occurs.
Data Source
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AI summary
A device for securing a peripheral venous catheter, including a body comprising first and second fastening extremities and a connecting section that interconnects said fastening extremities, the latter feature a tubular shape and comprising corresponding first and second longitudinal grooves; a portion of the catheter may be inserted through said grooves to grasp the same in a folded manner, the connecting section comprises first and second portions extending between the longitudinal grooves, in such a way that the fastening extremities and the portions of the connecting section form a closed perimeter outline defining a hollow internal space adapted to be set between an open position and a closed position, where, the hollow internal space being open, the portion of the catheter may be inserted for the attachment thereof to the fastening extremities, and then secured to the latter when the hollow internal space is closed.