Atomizing Nozzle Depth Control and Disposable Design
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Solution Overview
Problem
Existing nasal drug delivery devices face issues with accurate depth control of the atomizing nozzle, leading to potential nasal cavity damage and contamination due to repeated use, especially when administering medication to children or individuals who cannot accurately guide the nozzle.
Innovation Solution
The design incorporates a spray hood with a conical shape and a connecting cylinder featuring a bayonet or claw structure for secure snap-fit attachment to the syringe, along with a fluid-guiding cylinder and fan-shaped projections for precise spray control, ensuring the nozzle extends only as far as necessary and is used once to prevent contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the atomizing nozzle is reused multiple times to deliver medication, then the productivity of the device is improved, but the reliability is worsened due to contamination with bacteria and viruses
Solution Approach 1:
The patent implements a disposable atomizing nozzle that is discarded after a single use. The nozzle is pre-attached to a medication container and cannot be removed for reuse. This eliminates contamination risk from repeated use while maintaining productivity by providing a new sterile nozzle for each medication delivery session.
2Reliability
If the nozzle is extended deep into the nasal cavity to deliver medication effectively, then the effectiveness is improved, but the object-affected harmful factors worsen due to potential damage to the nasal cavity
Solution Approach 1:
The patent designs the nozzle with a specific geometric configuration including a conical expansion section and a columnar end section with precisely controlled dimensions. The columnar end has a diameter of 1-3mm and length of 5-15mm, creating a localized interaction zone that delivers medication effectively while limiting penetration depth to avoid nasal cavity damage.
Solution Approach 2:
The nozzle geometry is pre-designed with built-in depth control features before use. The columnar end section and conical expansion create a physical stop that prevents over-insertion. This preliminary structural design ensures safe operation without requiring real-time monitoring or user judgment during administration.
3Ease of manufacture
If the nozzle structure is simplified for easy manufacture, then the ease of manufacture is improved, but the manufacturing precision worsens due to difficulty in controlling the exact extension depth
Solution Approach 1:
The nozzle is divided into distinct functional sections: a columnar end section for depth control, a conical expansion section for medication delivery, and a connecting cylinder for attachment. Each section has standardized dimensions that can be manufactured independently using conventional processes, then assembled to achieve the precise overall geometry required for safe and effective operation.
Data Source
AI summary
The present disclosure discloses an atomizing nozzle and a nasal drug delivery device. The atomizing nozzle includes a spray hood which includes a conical hood body and a connecting cylinder provided inside the hood body and connected to the inner top of the hood body, the wall of the connecting cylinder is provided with a bayonet structure or a claw structure for non-detachable snap fit with the corresponding claw structure or the bayonet structure on the outer side of the syringe extending into the connecting cylinder, a columnar end extends from the external tip of the hood body for extending into the internal nasal cavity, the connecting cylinder, the columnar end and a portion of the hood body therebetween jointly form a communicating channel, the front end of the columnar end is provided with a spray hole, and a fluid-guiding cylinder.