Dental Cartridge Interface for Reliable Material Dispensing

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Solution Overview

Problem

Existing dental material dispensing systems lack reliability and safety, particularly when handling different types of dental materials, and often result in increased costs due to malfunctions and the need for frequent maintenance.

Innovation Solution

A dental dispensing system with a cartridge that includes user-operable contact-based sensors and interfaces for detecting user inputs, allowing for safe and controlled operation of the device, including the use of contactless sensors and mechanical elements to prevent accidental operation without a cartridge, and enabling customized operation modes based on encoded outputs for different materials.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If operating means are integrated into the cartridge, then ease of operation and reliability are improved, but device complexity increases

Engineering Contradiction:
ImprovereliabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The operating means (sensor, interface elements) are segmented from the main dispensing device and integrated into the cartridge. This allows the cartridge to be replaced as a complete unit, improving reliability by ensuring consistent operation across cartridges while managing complexity through modular design.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The cartridge becomes self-sufficient by incorporating its own operating means and interface. The cartridge can independently provide identification information and control signals, reducing dependency on the main device and improving overall system reliability.

Inventive Principle:
Principle #25Self-service

2Object-affected harmful factors

If contactless sensors are used for cartridge detection, then safety is improved, but manufacturing precision requirements increase

Engineering Contradiction:
ImprovesafetyVSAvoidmanufacturing precision
Core Design Contradiction:
Object-affected harmful factorsVSManufacturing precision

Solution Approach 1:

Contactless sensors (optical, capacitive, or inductive) replace mechanical contact-based detection systems. This eliminates the need for precise mechanical alignment and physical contact, improving safety by preventing contamination and cross-contamination between cartridges and the device, while reducing manufacturing precision requirements for mechanical interfaces.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If multiple operating modes are supported for different materials, then adaptability is improved, but device complexity increases

Engineering Contradiction:
ImproveadaptabilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The cartridge interface is designed with universal functionality to support multiple operating modes for different dental materials. The interface can automatically detect the cartridge type and adjust parameters accordingly, providing adaptability across material types while managing complexity through automated recognition and configuration.

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

Solution Approach 2:

The interface uses feedback from the cartridge (such as identification codes or sensor responses) to automatically determine the appropriate operating mode. This allows the device to adapt to different materials without requiring complex manual configuration, improving versatility while keeping the control system manageable.

Inventive Principle:
Principle #23Feedback

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 system enhances reliability and safety by minimizing malfunctions and allowing for the use of different dental materials with customized operation modes, reducing costs through improved safety features and ease of maintenance.

Implementation Method 1

For recognition of the cartridge output the device interface comprises a contactless sensor or contact switch

Methodology Applied
Scientific EffectElectromagnetic field detection: Electromagnetic Induction

Implementation Method 2

The operating means comprises a contact based sensor

Methodology Applied
Scientific EffectMechanical contact detection: Mechanical Force

Data Source

PatentEP2869783B1Device for dispensing a dental material and a cartridge for use with the device
Publication Date: 2018.05.23 3M INNOVATIVE PROPERTIES CO
  • EP2869783B1 patent drawingFigure 1~2
  • EP2869783B1 patent drawingFigure 3~4
  • EP2869783B1 patent drawingFigure 5~6

AI summary

A system for dispensing a dental material comprises a cartridge from which the dental material is extrudable. The cartridge comprises a operating means and an interface for transmitting a cartridge output based on a user input. The system further has a dental dispensing device having a receptacle for receiving the cartridge and an interface for receiving the cartridge output. The system helps maximizing reliability and maximizing safety in operation for dispensing dental material.