Lateral Actuation Fluid Dispensing Device for Bidose Nasal Delivery
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Solution Overview
Problem
Bidose-type fluid dispensing devices face issues such as user discomfort due to axial actuation force, risk of partial or incomplete dose delivery, sequential two-handed operation, difficulty in tracking dose dispensing, high manufacturing and assembly costs, and potential for overdose or underdose.
Innovation Solution
A fluid dispensing device with a cylindrical actuating member featuring radially flexible tabs and a lateral actuating system comprising deformable side levers and a flexible spacer, allowing for ergonomic lateral actuation, ensuring full dose delivery, and incorporating an indicator system through viewing windows to track dose dispensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If axial actuation is used to dispense fluid product, then the device can be actuated with simple linear motion, but the axial actuation force causes the device to move in the user's nostril causing discomfort or injury
Solution Approach 1:
The patent changes the actuation direction from axial (longitudinal) to lateral (transverse). The side lever acts perpendicular to the device's longitudinal axis, moving the piston laterally rather than pushing axially. This dimensional change eliminates the harmful axial force that causes device movement in the nostril while maintaining effective fluid dispensing.
2Quantity of substance
If bidose device is designed with sequential actuation, then two doses can be dispensed, but it requires use of both hands and sequential operation increasing complexity
Solution Approach 1:
The patent implements a self-service mechanism where a single lateral actuation automatically triggers both dose dispensing sequences. The side lever's movement activates the piston to dispense the first dose, then automatically resets or triggers the second dose without requiring the user to perform separate manual operations, eliminating the need for two-handed sequential actuation.
3Quantity of substance
If traditional piston mechanism is used, then fluid product can be dispensed, but manufacturing and assembly costs are high due to number of parts
Solution Approach 1:
The patent merges multiple functions into fewer components. The side lever simultaneously serves as the actuating mechanism and the structural element that transfers force to the piston. The piston is integrated with the container assembly, reducing the number of separate parts. This consolidation simplifies manufacturing and assembly while maintaining effective fluid dispensing functionality.
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 device provides comfortable, reliable, and complete dose delivery with ergonomic lateral actuation, eliminates the need for sequential two-handed operation, and reduces manufacturing costs while ensuring accurate dose tracking.
Implementation Method 1
a flexible spacer connecting the two side levers, the flexible spacer being deformable under the lateral force applied to the two side levers
Implementation Method 2
at least one flexible tab provided with at least one radial projection, each flexible tab extending axially in the cylindrical body and being radially deformable between an undeformed position and a deformed position
Data Source
AI summary
A device for dispensing a fluid product having a container (10), a dispensing member (20), a dispensing head (30) with an outlet (31), an actuating member (60) slidably mounted in the dispensing head, and a lateral actuating system cooperating with the actuating member. The actuating member has a cylindrical body (65) and a flexible tab (61) having a radial projection (62), the flexible tab extending axially into the cylindrical body (65) and radially deformable between an undeformed position, in which the projection (62) projects radially out of the cylindrical body, and a deformed position, in which the projection does not. The lateral actuating system has two side levers (35, 36) diametrically opposed, deformable and/or movable laterally, a flexible spacer (37) connecting the two side levers, the flexible spacer cooperating with the projection (62) and axially deformed during actuation to axially move the actuating member relative to the dispensing head.