Infusion Securing Device Prevents Separation

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Solution Overview

Problem

The existing infusion arrangements are disadvantaged in terms of handling due to a substantially frictional connection between the piercing mandrel and the pierceable region, which is not sufficient to prevent unwanted separation, potentially affecting patient safety during infusion therapy.

Innovation Solution

A securing device with a first and second fastening element, connected by a connection element, that secures the infusion appliance to the infusion container, providing a mechanical connection that counteracts separation by engaging around the outside of the respective fastening regions transversely to the securing direction, using form-fit and force-fit engagements, and elastic expansion for a reliable lock.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a frictional connection between piercing mandrel and pierceable region is used, then the infusion appliance can be connected to the infusion container, but the connection is not sufficient to prevent unwanted separation

Engineering Contradiction:
Improveconnection reliabilityVSAvoidhandling ability
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The securing device is divided into multiple functional components: a first fastening element that connects to the infusion container, a second fastening element that connects to the infusion appliance, and connection elements that link the fastening elements. This segmentation allows each component to perform its specific function independently, creating a more reliable multi-point connection system that prevents separation while maintaining ease of operation.

Inventive Principle:
Principle #1Segmentation

2Strength

If a frictional connection is used, then the structure remains simple, but the connection strength is insufficient to counteract separation forces

Engineering Contradiction:
Improveconnection strengthVSAvoidstructure complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The securing device merges multiple connection functions into a single integrated structure. The first fastening element, second fastening element, and connection elements are combined into one cohesive securing device that simultaneously provides mechanical strength, structural stability, and ease of operation. This merging approach increases connection strength without proportionally increasing complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The connection is extended from a single-point frictional connection to a multi-dimensional connection system. The first and second fastening elements engage with the infusion container and infusion appliance respectively in different spatial locations, while connection elements provide structural linkage. This dimensional expansion creates a distributed connection system that is both stronger and more reliable.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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

The securing device effectively prevents unwanted separation of the infusion appliance from the container, ensuring safe and improved handling of the infusion arrangement by providing a redundant mechanical connection that secures against separation, thus preventing adverse effects on the patient.

Implementation Method 1

elastic expansion for a reliable lock

Methodology Applied
Scientific EffectElastic expansion: Elasticity

Implementation Method 2

using form-fit and force-fit engagements

Methodology Applied
Scientific EffectForm-fit engagement: Mechanical Fastener

Data Source

PatentUS11197801B2Securing device for securing an infusion appliance
Publication Date: 2021.12.14 B BRAUN MELSUNGEN AG
  • US11197801B2 patent drawing
  • US11197801B2 patent drawing
  • US11197801B2 patent drawing

AI summary

A securing device for securing an infusion appliance to an infusion container includes a first fastening element, which is designed in such a way that it is connectable to a fastening region of the infusion container, and a second fastening element, which is arranged at a distance from the first fastening element and which is designed in such a way that it is connectable to a fastening region of the infusion appliance. At least one connection element connects the first fastening element and the second fastening element to each other. The securing device can be used for medical infusion and transfusion arrangements.