Sterilization Device Unlocking Class B Cycles via Software Key

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Solution Overview

Problem

Existing sterilization devices are limited to a single class of sterilization, necessitating costly replacements to upgrade to higher classes like Class B, which is not environmentally friendly and lacks flexibility for varying sterilization needs.

Innovation Solution

A sterilization device capable of operating in multiple classes (S, B, and optionally N) with locked and unlockable cycle programs, allowing conversion between classes using a code or key, incorporating steam pulsing and vacuum systems for air removal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a sterilizer is designed to provide only Class S sterilization, then the device complexity and cost are reduced, but the adaptability and versatility are limited

Engineering Contradiction:
Improvesterilization class adaptabilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The sterilizer is designed with multiple sterilization cycle programs (Class N, Class S, and Class B) integrated into a single device, allowing it to perform multiple sterilization functions. The controller can execute different cycle programs based on user selection, enabling the device to adapt to various sterilization needs without requiring separate sterilizers for each class.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The sterilizer incorporates dynamic configuration through lockable and unlockable cycle programs. The controller can dynamically enable or disable specific sterilization classes (N, S, or B) based on activation codes or user permissions, allowing the device to adapt its functionality over time without physical modifications.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If a sterilizer is upgraded from Class S to Class B by replacing the device, then the sterilization capability is improved, but the loss of substance and environmental waste increase

Engineering Contradiction:
Improvesterilization capabilityVSAvoiddevice waste
Core Design Contradiction:
Adaptability or versatilityVSLoss of substance

Solution Approach 1:

Instead of discarding the original Class S sterilizer when upgrading to Class B, the invention allows the existing device to be retained and reconfigured. The controller software is updated or reprogrammed to enable Class B sterilization cycles, and the device hardware is utilized as-is, thereby recovering the value of the original investment and avoiding electronic waste.

Inventive Principle:
Principle #34Discarding and recovering

3Adaptability or versatility

If multiple sterilization cycle programs are made available, then the adaptability is improved, but the ease of operation may deteriorate due to complexity

Engineering Contradiction:
Improvesterilization program optionsVSAvoidoperation simplicity
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The sterilization cycle programs are segmented into distinct classes (N, S, and B), each with clearly defined parameters and indications. The controller presents these as separate, identifiable options to the user, allowing them to select the appropriate class based on their specific needs without being overwhelmed by a single complex menu.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention uses inexpensive activation codes or software keys to control access to different sterilization classes. These codes can be easily distributed and activated without requiring complex hardware changes, allowing flexible enabling/disabling of programs while maintaining operational simplicity for the end user.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

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 flexible sterilization options, reduces waste by allowing existing devices to be upgraded, and provides cost-effective access to multiple sterilization classes without full replacement.

Implementation Method 1

Class S sterilizers use active air removal by for example steam pulsing

Methodology Applied
Scientific EffectCondensation: Condensation

Implementation Method 2

steam pulsing... air removal from the sterilizer

Methodology Applied
Scientific EffectPressure gradient: Pressure Gradient

Implementation Method 3

Class B sterilizers use active air removal by for example using a vacuum pump

Methodology Applied
Scientific EffectVacuum: Vacuum

Implementation Method 4

sterilization using a suitable sterilization medium, such as for example steam and heat

Methodology Applied
Scientific EffectThermal energy transfer: Conduction (thermal)

Data Source

PatentEP4065177B1sterilizer
Publication Date: 2025.06.25 TUTTNAUER
  • EP4065177B1 patent drawingFigure 1
  • EP4065177B1 patent drawingFigure 2a
  • EP4065177B1 patent drawingFigure 2b

AI summary

The present invention is of a sterilization device, which features a sterilization chamber for accommodating at least one item for sterilization, a power means for powering the device, a means for providing a sterilization medium for sterilizing the item and a plurality of sterilization cycle programs. The plurality of sterilization cycle programs include at least one S class sterilization cycle program and at least one B class sterilization cycle program. In a first state the sterilization device provides sterilization using the at least one S class sterilization cycle program and the at least one B class sterilization cycle program is locked and unavailable for use by a user. The present invention provides a sterilization device which is adaptable to unlock and provide B class sterilization. Furthermore, the present invention provides a method of converting a convertible S Class sterilization device to a B Class sterilization device.