Nasal Cannula Recessed Annular Section Prevents Tube Deformation
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Solution Overview
Problem
Conventional nasal cannula devices have nasal joint tubes that easily bend and deform under stress, leading to potential closure and disruption of gas delivery, which can jeopardize patient health.
Innovation Solution
The nasal cannula device incorporates a recessed annular section with a thinner thickness than the cannula body and nasal joint tubes, directing stress to this area to prevent deformation of other sections, ensuring the nasal joint tube remains open for smooth gas delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the nasal joint tube is made with narrow bore and thin tube wall, then the device complexity is reduced, but the tube easily bends and deforms under stress
Solution Approach 1:
The patent applies local quality by creating a recessed annular section with different thickness characteristics at a specific location of the nasal joint tube. This localized structural modification allows the tube to maintain thin walls overall for simplicity while having a specific reinforced section that resists bending and deformation under stress, thus resolving the contradiction between device simplicity and structural stability.
2Ease of manufacture
If the nasal joint tube is made thinner to reduce device complexity, then ease of manufacture is improved, but the tube deforms and closes under stress
Solution Approach 1:
The recessed annular section creates a localized structural feature that can be manufactured with standard processes while providing enhanced stress resistance. This allows the overall tube to remain thin and easy to manufacture, while the specific recessed section provides the reliability needed to prevent tube closure and ensure continuous gas delivery under physiological stress.
3Strength
If the tube wall thickness is increased to prevent deformation, then strength is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
Instead of uniformly increasing tube wall thickness throughout the entire nasal joint tube, the patent applies the recessed annular section that provides localized structural reinforcement. This approach achieves the necessary strength to prevent deformation and tube closure only where most needed, while keeping the rest of the tube structure simple and thin-walled, thus avoiding unnecessary complexity.
Data Source
AI summary
A nasal cannula device includes a cannula body. The cannula body includes an accommodating chamber inside and includes two nasal joint tube extended outwardly and communicating with the accommodating chamber. A junction ring is formed between the cannula body and each nasal joint tube. At least one of the cannula body and each nasal joint tube includes a recessed annular section recessed at one side of each junction ring. The recessed annular section has a thickness smaller than a thickness of the cannula body, a thickness of each nasal joint tube, and a thickness of each junction ring. Accordingly, the nasal cannula device can deliver a therapeutic gas smoothly.