Wrist dispenser
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Solution Overview
Problem
There is a need for a wrist-mounted dispenser that effectively allows a fluid, gel, or cream solution to be squirted into a wearer's hand, particularly for disinfectant sanitizers, with existing solutions lacking in efficient dispensing mechanisms and customization options.
Innovation Solution
A wrist-mounted dispenser featuring a compressible dispenser pouch made of double-layered high-density polyethylene, with a dispensing nozzle that self-seals when not in use, and a wristband that allows for high-resolution printing and customizable graphics, enabling the dispensing of fluids through a unique orifice configuration and refill system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a wrist-mounted dispenser is designed with a compressible pouch and nozzle system, then fluid dispensing functionality is achieved, but the device complexity increases
Solution Approach 1:
The dispenser is divided into distinct functional segments: a reservoir chamber for fluid storage, a dispensing chamber for controlled release, and a nozzle for precise application. This segmentation allows each component to be optimized independently while maintaining overall system functionality.
Solution Approach 2:
The dispensing chamber is nested within the reservoir chamber, and the nozzle is integrated into the dispensing chamber structure. This nested configuration reduces the overall device volume and minimizes the number of separate components, thereby reducing device complexity while maintaining dispensing functionality.
2Loss of substance
If the dispensing nozzle is made smaller to reduce fluid loss, then fluid conservation improves, but the ease of operation decreases
Solution Approach 1:
The nozzle incorporates a self-sealing mechanism with a valve that opens only at the precise location where fluid dispensing is required. This localized quality control allows the nozzle to maintain a small, fluid-tight structure while enabling easy operation through intuitive user interaction with the valve mechanism.
Solution Approach 2:
The nozzle features an automatic self-sealing function that closes the fluid passage when not in use, preventing fluid loss without requiring user intervention. The valve automatically opens when the user activates dispensing, combining fluid conservation with ease of operation.
3Quantity of substance
If the reservoir chamber is made larger to increase fluid capacity, then the quantity of substance increases, but the device complexity and size increase
Solution Approach 1:
The dispensing chamber is positioned inside the reservoir chamber, utilizing the internal space of the larger reservoir. This nested arrangement allows the device to maintain a large fluid capacity while minimizing the external dimensions and structural complexity of the overall dispenser.
Solution Approach 2:
The reservoir chamber serves multiple functions: it acts as both the primary fluid storage container and the structural housing for the dispensing chamber. This multi-functionality reduces the need for separate components, thereby decreasing device complexity while maintaining adequate fluid capacity.
4Adaptability or versatility
If the wristband is made customizable with printing capabilities, then adaptability and user preference satisfaction improve, but the manufacturing precision requirements increase
Solution Approach 1:
The wristband utilizes printing technology to apply custom graphics and designs to the surface of the band. This copying process allows for high-level customization without requiring complex manufacturing processes, as the decorative elements are applied as surface layers rather than being integral to the structural components.
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 dispenser provides a convenient and leak-proof mechanism for administering disinfectant or other fluids directly to the hand, with customizable designs and efficient filling options, ensuring effective dispensing without unintended spillage.
Implementation Method 1
The material that the pouch may be made of is preferably double-layered, high-density polyethylene (HDPE) or similar material that is capable of self-sealing especially when wet.
Implementation Method 2
The user's other hand can be used to squeeze the reservoir chamber to dispense the sanitizing fluid into the user's hand.
Data Source
AI summary
A wrist-mounted fluid dispenser includes a wristband and a dispenser pouch. The dispenser pouch includes a reservoir chamber and a dispensing nozzle. The dispenser pouch is preferably formed by bonding two sheets of material to each other. An orifice is formed between the dispensing nozzle and the reservoir chamber. A nozzle slit is formed at an end edge of the wristband. The reservoir chamber is either rolled up and inserted through the nozzle slit or sown into the wristband. The reservoir chamber is filled with a fluid solution with a syringe or hand pump equipped with hypodermic blunt needle or the like. One's hand is inserted through the wrist-mounted liquid dispenser. An end of the dispensing nozzle is folded when not used, such that the nozzle is located between the wrist and an inside surface of the wristband. A second embodiment of the wrist-mounted liquid dispenser includes a double chamber dispenser pouch.