Hypodermic Needle Destruction Module Design
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Solution Overview
Problem
Existing hypodermic needle destruction devices create debris that requires periodic maintenance, which is impractical in domestic settings, and pose risks of cross-contamination and needlestick injuries, necessitating a user-friendly, portable, and easily maintainable solution for safe disposal.
Innovation Solution
A hypodermic needle destruction device with a removable and replaceable needle destruction module, powered by a supercapacitor, featuring a controller with sensors and a modular design for efficient needle deformation and sterilization, along with wireless charging and data logging capabilities for monitoring and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If needle destruction is performed at the point of use using a fixed device, then sterilization and blunting are achieved, but maintenance becomes impractical in domestic settings due to debris accumulation
Solution Approach 1:
The device is divided into two main segments: a reusable main body housing that contains the power source and control electronics, and a disposable needle destruction module that contains the electrodes and containment chamber. After use, only the contaminated module needs to be discarded, eliminating maintenance requirements for domestic users while preserving sterilization functionality.
Solution Approach 2:
The needle destruction module is extracted as a separate removable component from the main device body. This module contains all elements that come into contact with the needle (electrodes, containment chamber) and can be easily removed and replaced by the user, separating the maintenance burden from the permanent device.
2Quantity of substance
If a sharps bin is used to store used needles, then needles can be collected for destruction, but cross-contamination and needlestick injuries occur during handling
Solution Approach 1:
The device immediately neutralizes the harmful properties of used needles by sterilizing and blunting them at the point of use, converting them from a hazardous waste requiring careful handling into a safe material that can be casually disposed of in regular trash, eliminating the need for specialized sharps bins.
3Ease of operation
If a removable needle destruction module is implemented, then maintenance needs are minimized for domestic use, but device complexity increases
Solution Approach 1:
The needle destruction module is designed as a low-cost, disposable component that is replaced rather than maintained. This approach trades the complexity of maintenance mechanisms for the simplicity of a plug-and-play modular design where the entire contamination-prone section is discarded after a single use.
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
Enables safe, efficient, and user-friendly disposal of hypodermic needles by minimizing maintenance needs, reducing cross-contamination risks, and facilitating remote monitoring and supply management, suitable for home use.
Implementation Method 1
an electric current passed through the needle via the electrodes... The process of heating the needle sterilises it
Implementation Method 2
applying an axial force to soften/melt the needle... the process of applying an axial compression, deforms the needle into a non-sharp object
Data Source
AI summary
A hypodermic needle destruction device includes a main body housing a power source and a controller; a recess for receiving, in use, a needle destruction module; and means for retaining the needle destruction module at least partially within the recess. The needle destruction module has clamping and tip electrodes that respectively clamp and axially compress a hypodermic needle, and a containment tube that inhibits bowing of the needle. When a current is passed through the needle via the electrodes and an axial force applied, the needle is sterilised and blunted.