Ergonomic Stylus Tool with Ejectable Tip for Microbial Mitigation
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Solution Overview
Problem
Current personal protective equipment (PPE) for mitigating hand and finger contact with contaminated surfaces is cumbersome, inefficient, and often requires direct contact with potentially contaminated tips, failing to provide adequate protection against microbial transmission, especially in the context of the COVID-19 pandemic.
Innovation Solution
A portable, ergonomic stylus tool with a removable and ejectable tip that allows for electrical interaction with capacitive touchscreens and mechanical interaction with surfaces without direct hand contact, featuring a rigid stem, compliant caps, and an actuator mechanism for easy tip replacement, designed for both capacitive and resistive touchscreens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If disposable gloves are used to mitigate hand contact with contaminated surfaces, then protection against microbial transmission is provided, but the equipment becomes bulky and generates large amounts of refuse
Solution Approach 1:
The patent extracts the protective function from the entire hand and applies it only to the fingertip through a stylus tool. This allows selective protection where needed while leaving the rest of the hand free, eliminating the need for bulky gloves that cover the entire hand.
Solution Approach 2:
The patent employs disposable tips that can be easily replaced on the stylus tool. These inexpensive, single-use tips provide protection against microbial transmission while generating minimal waste compared to entire disposable gloves, aligning with the principle of using cheap, short-living objects for specific protective functions.
2Reliability
If disposable gloves are used for surface contact mitigation, then microbial transmission is prevented, but a large amount of refuse is produced
Solution Approach 1:
The patent uses small, disposable tips instead of entire disposable gloves. These tips are inexpensive and can be replaced individually, providing the necessary protection while dramatically reducing the amount of refuse generated compared to discarding entire gloves.
Solution Approach 2:
The patent enables selective discarding of only the contaminated tip portion while retaining and reusing the stylus body. This partial discarding approach minimizes waste material while maintaining the protective function, allowing the user to recover and continue using the main tool structure.
3Ease of operation
If capacitive styli are used to lessen contact with capacitive screen devices, then contact reduction is achieved, but they do not sufficiently address needs for general surface contact mitigation
Solution Approach 1:
The patent designs the stylus tool with universal applicability - it can be used on capacitive screens, resistive screens, and for general surface contact mitigation. The replaceable tips can be selected for different functions (conductive for screens, non-conductive for general surfaces), making the tool versatile across multiple applications.
Solution Approach 2:
The patent incorporates dynamic adaptability through interchangeable tips that can be selected based on the specific task. The tips can be quickly replaced to change the tool's properties - conductive tips for touchscreen interaction, non-conductive tips for general surface contact mitigation - allowing the tool to adapt to different requirements.
4Ease of operation
If no-touch tools are used to lessen contact with objects and surfaces, then contact mitigation is achieved, but they are awkward and fragile
Solution Approach 1:
The patent divides the tool into a durable stylus body and replaceable tips. The main structure remains robust and reusable, while the tips that contact surfaces can be easily replaced if contaminated or damaged. This segmentation protects the investment in the main tool while allowing disposable replacement of contact elements.
Solution Approach 2:
The patent extracts the disposable protective element (tip) from the permanent tool structure (stylus body). This allows the main tool to remain durable and reusable while the contact portion can be replaced when needed, resolving the contradiction between contact mitigation and durability.
Data Source
AI summary
Embodiments exemplify an ambidextrous multifunctional personal protection finger-mounted keyring ergonomic microbial surface contact mitigation stylus tool, grasped by a user to mitigate hand contact with surfaces, and electrically interact with a capacitive device touchscreen. The stylus tool can also effect force transmission and motion to a movable surface, and can include a rigid elongated stem having a proximal end with at least a transverse aperture that supports a removably and pivotably docked ring can be used as a rotationally locking keyring and the fulcrum of a third-class lever. The stylus tool can further include a compliantly coupled and ejectable cap on the stem distal end, and a mechanism that includes an ergonomic actuator to removably separate, without the user hand touching the cap, eject the disposable and replaceable cap from the stem by axially sliding thereon, and optionally activating a capacitive device touchscreen.