Multi-Ampoule Antiseptic Applicator With Retractable Actuators

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Solution Overview

Problem

Conventional antiseptic applicators lack the ability for users to independently control the rupture of multiple ampoules and have a profile that makes it difficult to reach all areas of a patient, especially when actuators increase the overall size.

Innovation Solution

An applicator assembly with a container and multiple ampoules that allows independent fracture and release of liquids using actuators, featuring a design that reduces the profile when actuators are in a second position.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple ampoules are included in the applicator assembly, then the versatility and controlled release capability are improved, but the device complexity increases

Engineering Contradiction:
Improvecontrolled release capabilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The applicator assembly is segmented into multiple independent ampoules, each capable of being fractured and releasing its contents independently. This segmentation allows the user to control the release of each ampoule separately, providing versatility in dosing and application while maintaining a relatively simple overall device structure.

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If actuators are added to enable independent fracture of ampoules, then the ease of operation is improved, but the length of the applicator increases

Engineering Contradiction:
Improveease of operationVSAvoidlength of applicator
Core Design Contradiction:
Ease of operationVSLength of moving object

Solution Approach 1:

The actuators are designed to be nested within or integrated into the container structure. When not in use, the actuators are positioned inside the container housing, minimizing the overall length of the applicator. When actuation is required, the actuators extend or move to engage the ampoules, providing ease of operation without permanently increasing the applicator's length.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Ease of operation

If the actuator is positioned to fracture ampoules, then the ease of operation is improved, but the profile of the applicator increases making it difficult to reach all areas

Engineering Contradiction:
Improveease of operationVSAvoidprofile of applicator
Core Design Contradiction:
Ease of operationVSLength of stationary object

Solution Approach 1:

The actuator is designed with dynamic positioning capability, allowing it to move between a retracted position (when not in use) and an extended position (when actuation is required). This dynamic design enables the applicator to maintain a compact profile for reaching difficult areas while still providing easy access to the fracture mechanism when needed.

Inventive Principle:
Principle #15Dynamics

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

Enables controlled release of antiseptic solution by allowing independent actuation of ampoules, providing better access to all areas of a patient and reducing the applicator's overall size.

Implementation Method 1

the at least one actuator is actuatable to independently fracture the plurality of ampoules

Methodology Applied
Scientific EffectCompressive force: Compression

Implementation Method 2

an applicator assembly with a container and multiple ampoules that allows independent fracture and release of liquids using actuators

Methodology Applied
Scientific EffectFracture: Fracture Mechanics

Data Source

PatentEP3229974B1Antiseptic applicator
Publication Date: 2026.04.01 CAREFUSION 2200 INC
  • EP3229974B1 patent drawingFigure 1
  • EP3229974B1 patent drawingFigure 2
  • EP3229974B1 patent drawingFigure 3

AI summary

An applicator assembly includes a plurality of ampoules formed of a frangible material and containing liquid to be applied, a container having a proximal end, a distal end, and an interior portion defining a chamber adapted to receive the plurality of ampoules, an application member attached to the distal end of the container; and at least one actuator projecting from the container, wherein the at least one actuator is actuatable to independently fracture the plurality of ampoules, thereby independently releasing the liquid into the application member. The at least one actuator may be moveable from a first position to a second position, the applicator having a smaller profile when the actuator is in the second position than when the actuator is in the first position.