Toothbrush Suction Assembly for Aspiration-Safe Debris Collection

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Solution Overview

Problem

Existing toothbrushes lack reliable mechanisms to collect toothpaste, saliva, water, blood, bacteria, food, plaque, or other debris during brushing, posing a risk of swallowing or aspiration, particularly for young, convalescent, elderly, or disabled individuals, leading to dental caries and respiratory diseases.

Innovation Solution

A suction apparatus for a toothbrush comprising a housing with a vacuum pump, collection reservoir, and conduits that apply suction around the toothbrush head to collect and deposit materials in a reservoir, optionally with a foam to break surface tension and a one-way valve to prevent backflow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a suction apparatus is added to a toothbrush, then fluid collection capability is improved, but device complexity increases

Engineering Contradiction:
Improvefluid collection capabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The suction apparatus is integrated with the toothbrush by coupling the housing to the toothbrush handle, merging the suction function with the existing toothbrush structure. This allows fluid collection capability to be improved while minimizing the increase in device complexity through unified design.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The suction apparatus serves multiple functions: collecting fluids, removing debris, and preventing aspiration. By incorporating a vacuum pump, collection reservoir, and suction head portion into a single integrated system, the device achieves multi-functionality that addresses various oral hygiene needs simultaneously.

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

2Reliability

If a vacuum pump and collection reservoir are integrated into the toothbrush, then suction effectiveness is improved, but weight increases

Engineering Contradiction:
Improvesuction effectivenessVSAvoidweight
Core Design Contradiction:
ReliabilityVSWeight of moving object

Solution Approach 1:

The suction apparatus is designed as a separable component that couples to the toothbrush handle rather than being permanently integrated. This segmentation allows the suction system to be detached when not needed, providing suction effectiveness when required while minimizing weight addition to the overall toothbrush system.

Inventive Principle:
Principle #1Segmentation

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

Effectively removes liquids and debris during brushing, preventing aspiration and reducing bacterial growth, thereby minimizing the risk of infections and respiratory diseases.

Implementation Method 1

one or more conduits that couple the vacuum pump, suction head portion, and collection reservoir to apply a suction around the toothbrush head through the gap

Methodology Applied
Scientific EffectSuction: Pressure Gradient

Implementation Method 2

a foam or other porous material disposed at least partially in the gap between the suction head portion and the toothbrush head

Methodology Applied
Scientific EffectSurface tension breaking: Surfactant

Data Source

PatentEP3801370B1Toothbrush suction apparatus and method
Publication Date: 2025.09.03 RUTGERS THE STATE UNIV
  • EP3801370B1 patent drawingFigure 1
  • EP3801370B1 patent drawingFigure 2
  • EP3801370B1 patent drawingFigure 3~4

AI summary

A suction assembly, toothbrush, and method are provided that suction fluids and debris resulting from brushing. The suction assembly includes a housing configured to couple to the toothbrush so that a portion extends around sides and a back of the toothbrush head and is spaced from the toothbrush head by a gap. The suction assembly further includes a vacuum pump, a collection reservoir, and one or more conduits that couple the vacuum pump, suction head portion, and collection reservoir to apply a suction around the toothbrush head through the gap and deposit suctioned material in the collection reservoir.