Alcohol prep applicator
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Solution Overview
Problem
Existing medical applicators for skin disinfection are either time-consuming, lack effective flow control, or do not ensure user safety, and can cause irritation to patients with sensitive skin.
Innovation Solution
A hand-held applicator with a flexible bladder for holding alcohol solution, a spring-loaded hinge lever for easy swab loading and discarding, and a hinge door for adjusting solution flow, allowing for safe, efficient, and hygienic skin preparation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If anti-microbial solution is directly applied on patient's skin using foam pad, then skin disinfection is achieved, but patient skin irritation occurs
Solution Approach 1:
The patent introduces an intermediary delivery mechanism where the alcohol solution is contained in a cartridge and applied through a controlled dispensing system rather than direct foam pad contact. The solution is dispensed in controlled amounts onto the skin surface, acting as a mediator between the disinfectant and patient skin, reducing direct irritation while maintaining disinfection effectiveness.
Solution Approach 2:
The patent changes the physical state and delivery parameters of the alcohol solution. Instead of using saturated foam pads that directly contact skin, the solution is stored in liquid form in a cartridge and dispensed in controlled quantities. This parameter change from direct foam application to controlled liquid dispensing reduces skin irritation while maintaining disinfection efficacy.
2Reliability
If conventional applicators are used for skin preparation, then disinfection is achieved, but additional preparation steps and extended cleaning time are required
Solution Approach 1:
The patent combines multiple functions into a single integrated device: the applicator body houses both the alcohol solution cartridge and the dispensing mechanism in one unit. The retractable plunger mechanism integrates solution dispensing, swab activation, and applicator retraction into a single motion, eliminating the need for separate preparation steps and reducing overall preparation time.
Solution Approach 2:
The alcohol solution is pre-loaded into the cartridge before use, and the applicator is pre-assembled with all necessary components. The retractable plunger is pre-positioned to automatically dispense the solution when activated. This preliminary preparation eliminates the need for extended cleaning steps during the actual skin preparation process.
3Reliability
If existing applicators are used, then skin disinfection is performed, but effective flow control of anti-microbial solution is lacking
Solution Approach 1:
The patent employs a dynamic dispensing mechanism where the retractable plunger can be pulled out to a specific extent to control the amount of solution dispensed. The plunger's retraction distance directly controls the flow rate and volume of alcohol solution released from the cartridge, providing real-time, adjustable flow control during the skin preparation process.
Solution Approach 2:
The dispensing mechanism provides visual and tactile feedback to the user during operation. As the plunger is retracted, the user can observe and feel the solution being dispensed, allowing them to adjust the plunger position to achieve the desired flow rate. This feedback mechanism enables precise control over solution application without requiring complex instrumentation.
Data Source
AI summary
The present invention is an improved applicator comprising an applicator body having a top portion, a bottom portion and a central portion, a bladder positioned between the bottom portion and the central portion of the applicator body and designed for holding alcohol solution, a hinge lever extending from an inner side of the central portion and extending outwards from the top portion of the applicator body and a hinge door positioned on the central portion of the applicator body. The cartridge of swabs can be easily loaded by opening the hinge door and rests between the bottom portion and the central portion of the applicator body. The used swabs can be easily discarded by clicking the hinge lever. The improved applicator allows easy application of alcohol solution to the patient's skin in a simple and safe manner and provides a safe and convenient hand-held method for safe preparation of skin.