Magnetic Bead Beater for Rapid Sample Lysis
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Solution Overview
Problem
Current molecular testing and immunoassay techniques face challenges in achieving rapid and efficient sample homogenization and lysis, particularly in near-patient testing settings, where central laboratory automation is insufficient for short turnaround times, and chemical and enzymatic methods can denature enzymes or cause issues in subsequent processes.
Innovation Solution
A mechanical bead beater system integrated with a near-patient testing system, utilizing a permanent magnet within an enclosed chamber that oscillates due to an external magnetic field, exciting beads to physically disrupt samples for homogenization and lysis, allowing for rapid, one-step processing and automation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical or enzymatic methods are used for cell lysis, then the cell wall can be ruptured, but enzymes may be denatured or problems occur in subsequent processes
Solution Approach 1:
The patent replaces chemical and enzymatic lysis methods with a mechanical bead beater system that uses magnetic force to agitate beads, which physically disrupt cell walls through mechanical impact and shear forces, eliminating the harmful effects of chemical denaturation and enzyme interference
Solution Approach 2:
The magnetic bead beater generates rapid oscillating motion of beads through magnetic field actuation, creating high-frequency vibration and impact forces that effectively rupture cell walls while avoiding chemical contaminants that could interfere with downstream processes
2Extent of automation
If central laboratory robotic platforms are used for automation, then molecular testing processes can be automated, but the turnaround time is too long for near patient testing requirements
Solution Approach 1:
The patent extracts the bead beater mechanism from complex central laboratory robotic platforms and integrates it into a simplified, self-contained near-patient testing cartridge, removing unnecessary complexity and enabling rapid automated processing at the point of care
Solution Approach 2:
The magnetic bead beater operates with optimized magnetic field parameters and bead characteristics that enable rapid cell lysis in minutes, dramatically reducing processing time compared to traditional centralized automation while maintaining automated functionality
3Productivity
If mechanical bead beater systems are used for homogenization and lysis, then rapid one-step processing is achieved, but the system complexity increases
Solution Approach 1:
The patent combines the magnetic field generator, bead beater chamber, and sample processing components into a single integrated cartridge unit, merging multiple functions into one compact device that achieves rapid processing without proportionally increasing overall system complexity
Solution Approach 2:
The magnetic bead beater system is designed with universal applicability to process various sample types and is integrated into existing near-patient testing platforms, allowing one device to perform multiple functions including homogenization, lysis, and sample preparation across different test protocols
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 effectively homogenizes and lysessamples, enabling efficient extraction of analytes for molecular testing, with the ability to process various specimen types and conditions, and ensures safe disposal by containing all reagents and samples within a disposable test cartridge platform.
Implementation Method 1
one or more magnets located outside the chamber. Movement of the one or more magnets outside the chamber changes a magnetic field between the one or more magnets and the permanent magnet
Implementation Method 2
The magnetic field generated by the one or more magnets induces a force upon a permanent magnet disposed within the chamber
Implementation Method 3
The permanent magnet is configured to move between the first and second positions in response to the changing magnetic field... homogenizing the sample within the chamber via the movement of the permanent magnet
Implementation Method 4
mechanical methods involve the physical rupture of the cell wall through physical forces such as high-shear forces, grinding, and bombardment of the cell with small particles, often consisting of beads
Data Source
AI summary
A system for at least one of homogenization and lysis of a sample includes one or more walls forming an enclosed chamber, a permanent magnet within the enclosed chamber, a magnet guide, and one or more magnets located outside the chamber. The enclosed chamber has an inlet and one or more fluidic connections configured to introduce at least the sample into the chamber. The permanent magnet has a positive pole and a negative pole. The magnet guide is configured to laterally guide the permanent magnet between a first position and a second position and maintain a substantially constant orientation of the permanent magnet during the movement. Movement of the magnets outside the chamber changes a magnetic field between the one or more magnets and the permanent magnet. The permanent magnet moves between the first and second positions in response to the changing magnetic field.