Vacuum-Controlled Syringe Loading for Toxic Medication Handling

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Solution Overview

Problem

Existing syringe loading methods pose risks of repetitive motion injuries and exposure to toxic medications, particularly in medical settings.

Innovation Solution

A vacuum-controlled liquid delivery system with a receiving chamber, fitting train, and control valves that automate the liquid filling process, reducing manual handling and ensuring airtight seals to minimize exposure and injury.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual syringe loading is performed by workers, then the process is simple and direct, but workers are exposed to repetitive motion injuries and toxic medications

Engineering Contradiction:

Improvesimplicity of loading processVSAvoidexposure to toxic medications and repetitive motion injury

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent introduces an automated syringe loading system that acts as an intermediary between the medication source and the worker. The system includes a receiving chamber, fitting train with valves, and vacuum pump that collectively perform the loading function without direct worker involvement, thereby eliminating exposure to toxic medications and repetitive motion injuries while maintaining operational simplicity through automated control

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces the manual mechanical action of workers grasping and pulling plunger with an automated vacuum-based system. The vacuum pump creates negative pressure to draw liquid into the syringe, substituting the manual pulling motion with a vacuum-driven mechanical system that eliminates repetitive worker movements and associated injuries

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Object-affected harmful factors

If automated vacuum system is used for syringe loading, then worker safety is improved, but system complexity increases

Engineering Contradiction:

Improveworker exposure to toxic medicationsVSAvoidcomplexity of vacuum control system

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent divides the automated loading system into distinct functional segments: a receiving chamber for housing the syringe, a fitting train with detachable valves for fluid control, and a vacuum pump for creating negative pressure. This segmentation allows each component to perform its specific function independently, making the overall complex system manageable and maintainable while ensuring worker safety through automated operation

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent designs the receiving chamber and fitting train to serve multiple functions: the receiving chamber both houses the syringe and maintains vacuum pressure, while the fitting train with its detachable valves serves as both a fluid delivery pathway and a sealing mechanism. This multi-functionality reduces the number of separate components needed, thereby managing system complexity while achieving automated safe operation

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Productivity

If manual syringe loading is performed repeatedly, then the task can be completed, but repetitive motion injuries occur

Engineering Contradiction:

Improvenumber of syringes loadedVSAvoidrepetitive motion injury such as carpal tunnel syndrome

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent implements a self-service automated system where the vacuum-controlled loading mechanism performs the syringe loading function without requiring repeated manual worker intervention. The system autonomously controls the vacuum pressure, valve operations, and liquid transfer, enabling high productivity through automation while completely eliminating the repetitive motions that cause carpal tunnel syndrome and other work-related injuries

Inventive Principle:

Principle #25Self-service

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 system efficiently loads syringes and bags with liquids, decreasing worker exposure to toxic substances and reducing the risk of repetitive motion injuries.

Implementation Method 1

inducing a vacuum in the receiving chamber and in the feed line

Methodology Applied

Scientific EffectVacuum: Vacuum

Data Source

PatentUS20250214726A1Vacuum-controlled liquid delivery systems and methods for drawing a liquid into a syringe

Publication Date: 2025.07.03 STROUP DAVID K

AI summary

A vacuum controlled liquid delivery system and method having an air-tight receiving chamber, positioned within the chamber is an expandable container with a single access port for expanding the container lengthwise and upwards; a fitting train that regulates passage of liquid through the single access port of the expandable container, a vacuum pump; and a set of control valves