Disinfectant Injection Plaster With Needle Access Opening

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Solution Overview

Problem

Intramuscular injections, particularly vaccinations, require time-consuming preparation and post-treatment, including disinfection and wound care, which can be cumbersome and inefficient.

Innovation Solution

A plaster with an adhesive layer and an absorbent wound-covering pre-soaked with disinfectant, featuring an opening for the injection needle, simplifies the process by providing automatic disinfection and post-treatment, optionally with additional anaesthetic/analgesic agents, and includes a membrane or flap to maintain site integrity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional separate steps for disinfection and wound care are used, then thorough treatment is achieved, but the process becomes time-consuming and cumbersome

Engineering Contradiction:

Improveinjection process efficiencyVSAvoidpreparation and post-treatment time

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent combines multiple separate functions (disinfection, wound covering, and post-treatment protection) into a single integrated plaster unit. The absorbent wound-covering is pre-soaked with disinfectant, eliminating the need for separate disinfection steps, while the plaster itself provides immediate post-injection protection and absorption capabilities.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The disinfectant is pre-applied to the wound-covering during manufacturing, so that disinfection occurs automatically when the plaster is applied to the skin. This preliminary preparation eliminates the need for separate pre-injection disinfection steps and ensures proper disinfection even in situations where manual application might be compromised.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If multiple separate products are used for disinfection and wound care, then comprehensive treatment is provided, but device complexity increases

Engineering Contradiction:

Improveinjection site protectionVSAvoidnumber of separate products

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent integrates the adhesive layer, absorbent wound-covering with pre-applied disinfectant, and protective covering into a single plaster unit. This unified design ensures that all necessary functions (disinfection, absorption, protection) are delivered through one applied product rather than multiple separate products, reducing complexity while maintaining comprehensive treatment.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The plaster serves multiple functions simultaneously: it acts as an adhesive bandage, a disinfectant delivery system, an absorbent dressing, and a protective barrier. This multi-functionality eliminates the need for multiple specialized products while ensuring reliable injection site protection through integrated design.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Ease of operation

If the injection site is left open for needle access, then injection can be performed, but disinfectant may escape and site protection is compromised

Engineering Contradiction:

Improveneedle accessVSAvoiddisinfectant escape and contamination risk

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent employs a flexible, puncturable membrane or foil covering that seals the opening on the outer side of the plaster. This thin film allows the injection needle to pierce through for access to the injection site while simultaneously preventing disinfectant from escaping and maintaining the protective barrier against contamination.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The puncturable membrane acts as an intermediary element between the need for needle access and the need for disinfectant containment. It provides a controlled interface that allows mechanical penetration for injection while maintaining the integrity of the disinfectant barrier, solving the contradiction between accessibility and protection.

Inventive Principle:

Principle #24Intermediary (Mediator)

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

Facilitates quicker and more efficient intramuscular injections by integrating disinfection and wound care into a single step, reducing preparation time and ensuring the injection site is protected post-injection.

Implementation Method 1

the absorbent dressing has absorbed a disinfectant

Methodology Applied

Scientific EffectAbsorption: Absorption (physical)

Implementation Method 2

an adhesive layer on the patient side for fastening the plaster to the skin of a patient

Methodology Applied

Scientific EffectAdhesion: Adhesive

Data Source

PatentUS12465665B2Plaster for use in the context of an intramuscular injection, in particular a vaccination

Publication Date: 2025.11.11 PFM MEDICAL AG

AI summary

The invention relates to a plaster for use in the context of an intramuscular injection, particularly a vaccination, having a patient side and an outer side, comprising: an adhesive layer on the patient side for attaching the plaster to the skin of a patient, an absorbent wound-covering on the patient side in the region of an intended intramuscular injection site, the absorbent wound-covering having received a disinfectant, and an opening on the outer side in the area of the absorbent wound-covering of the patient side for the injection needle.