Veterinary Mask with Asymmetric Oval Opening for Muzzle Fit

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Solution Overview

Problem

Current animal masks are uncomfortable, ill-fitting, and difficult to seal effectively, leading to stress, discomfort, and potential rebreathing of gases due to their conical shape, which requires sedation for prolonged use and is challenging for animals with dolicephalic faces.

Innovation Solution

A mask with a non-round, oval-shaped opening and resilient walls that conform to the animal's muzzle, featuring a flattened top and bottom, and a cushion-like seal to reduce stress and improve fit, eliminating the need for sedation and minimizing dead space.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conical mask is pushed tightly up the animal's snout to cover the commissure of the lips, then sealing effectiveness is improved, but animal comfort and stress levels deteriorate

Engineering Contradiction:
Improvesealing effectivenessVSAvoidanimal stress and discomfort
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The mask transitions from a symmetric conical shape to an asymmetric design with a flattened top and bottom and an oval opening. This asymmetric configuration allows the mask to conform to the natural contours of the animal's muzzle without requiring excessive force, thereby achieving sealing effectiveness while reducing stress and discomfort to the animal.

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

The mask incorporates a flattened top region that specifically avoids contact with the animal's eyes and sensitive areas, while other portions of the mask maintain contact for sealing purposes. This localized differentiation of contact properties allows effective sealing at the commissure while protecting vulnerable areas from pressure and discomfort.

Inventive Principle:
Principle #3Local quality

2Reliability

If a conical mask is used to cover the commissure of the lips, then sealing is improved, but the mask volume increases leading to larger dead space and potential rebreathing

Engineering Contradiction:
Improvesealing effectivenessVSAvoidmask dead space volume
Core Design Contradiction:
ReliabilityVSVolume of stationary object

Solution Approach 1:

The asymmetric design with flattened top and bottom creates a more compact mask configuration that achieves effective sealing without the excessive volume inherent in traditional conical masks. This reduced volume minimizes dead space while maintaining the necessary seal over the commissure of the lips.

Inventive Principle:
Principle #4Asymmetry

3Reliability

If a conical mask is pushed far back on the animal's muzzle to ensure coverage, then sealing is improved, but vision is obscured and comfort deteriorates

Engineering Contradiction:
Improvesealing effectivenessVSAvoidanimal vision
Core Design Contradiction:
ReliabilityVSIllumination intensity

Solution Approach 1:

The flattened top design specifically addresses the vision obstruction problem by creating a low-profile upper surface that does not extend over the animal's eyes. This asymmetric configuration allows the mask to be positioned far back for effective sealing while maintaining clear vision for the animal.

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

The mask design differentiates between regions: the top portion is flattened to avoid eye contact and preserve vision, while the lower and lateral portions maintain contact for sealing. This localized quality distribution resolves the conflict between sealing effectiveness and visual access.

Inventive Principle:
Principle #3Local quality

4Ease of manufacture

If a conical mask with circular opening is used, then manufacturing is simple, but fit to the animal's muzzle is poor causing stress

Engineering Contradiction:
Improvemask manufacturing simplicityVSAvoidmask fit and comfort
Core Design Contradiction:
Ease of manufactureVSEase of operation

Solution Approach 1:

The transition from a symmetric circular opening to an asymmetric oval opening with flattened top and bottom improves the fit to the animal's muzzle contours. This asymmetric shape better accommodates the natural geometry of the muzzle while remaining manufacturable using standard molding techniques.

Inventive Principle:
Principle #4Asymmetry

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 mask reduces stress and discomfort in animals, allows for effective sealing without sedation, and minimizes rebreathing of gases by conforming to the muzzle shape, accommodating different facial structures, and reducing interference with vision.

Implementation Method 1

the walls of the mask proximate the opening being arranged to substantially conform to the shape of the muzzle of the animal and being of resilient material to hug the muzzle of an animal wearing the mask

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS11083554B2Mask apparatus for veterinary applications
Publication Date: 2021.08.10 DUNLOP COLIN
  • US11083554B2 patent drawing
  • US11083554B2 patent drawing
  • US11083554B2 patent drawing

AI summary

The present invention relates to an improved mask apparatus for veterinary applications. The mask may be used for dogs in particular. Most prior art masks are conical. This leads to problems in comfort and effectiveness. The present mask has a cross sectional profile and an opening shaped similar to an animal's muzzle. It has a flat top and a flat bottom, slightly wider than the top, and rounded sides. It also extends backwardly from the top of the opening to the bottom of the opening, so as to comfortably cover the commissure of the animal's lips.