Nasal Sprayer Dual Applicators Selective Delivery
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Solution Overview
Problem
Conventional nasal sprayers are ineffective for delivering liquids to both the nasal passages and deeper regions such as the Eustachian tube or sinus areas, requiring separate devices for different applications.
Innovation Solution
A nasal sprayer with dual applicators, including a spray nozzle for nasal passages and a flexible tube for deeper regions, along with a dispensing assembly featuring a rotating valve and pump assembly for selective liquid delivery through multiple ports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional nasal sprayer with a single spray nozzle is used, then liquid delivery to nasal passages is effective, but delivery to deeper regions such as Eustachian tube or sinus areas is ineffective
Solution Approach 1:
The nasal spray device incorporates multiple nozzles with different configurations (spray nozzle for nasal passages, tube-type nozzle for deeper regions) within a single device, enabling it to perform multiple functions: delivering liquid to both superficial nasal passages and deeper regions like Eustachian tube or sinus areas, eliminating the need for separate devices
2Manufacturing precision
If separate liquid dispensing devices are used for nasal passages and deeper regions, then targeted delivery to each region is achieved, but device complexity and ease of operation are worsened
Solution Approach 1:
The device combines multiple applicators (spray nozzle and tube-type nozzle) into a single integrated nasal spray device with a common liquid reservoir and actuation mechanism, allowing users to switch between different delivery modes by simply adjusting the nozzle selection rather than handling multiple separate devices
Solution Approach 2:
The device incorporates a selectable nozzle mechanism that allows dynamic switching between different applicator configurations based on the desired delivery target, enabling the device to adapt its delivery mode (spray vs. direct flow) according to the specific application requirement
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
Enables efficient and targeted delivery of liquid medicaments to both nasal passages and deeper areas using a single device, improving application precision and convenience.
Implementation Method 1
A pump assembly is further provided for selectively transferring a metered dose of the liquid medicament to the dispensing assembly
Implementation Method 2
The sprayer typically uses an atomizing nozzle for delivering the liquid, intranasally, in a mist form
Data Source
AI summary
The nasal sprayer with multiple applicators is a liquid dispensing device with two separate applicators. A first applicator is in the form of a spray nozzle, similar to that of a conventional nasal sprayer, which is provided for atomized liquid dispensing to the nasal passages. A second applicator is in the form of a flexible tube, which is adapted for dispensing liquid to deeper regions, such as the Eustachian tube or the adenoid or sinus regions. The nasal sprayer with multiple applicators includes a receptacle for receiving a volume of a liquid medicament for intranasal treatment. A pump assembly selectively transfers a metered dose of the liquid medicament to a dispensing assembly for dispensing through a selected one of first and second ports. A spray nozzle is in fluid communication with the first port and a flexible spray tube is in fluid communication with the second port.