Portable RPA Nucleotide Detection System With Vibratory Mixing
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Solution Overview
Problem
Current methods for detecting nucleotide sequences in crops, such as PCR and RPA, require bulky and complex equipment, limiting their portability and usability by unskilled users, especially for point-of-grain delivery applications.
Innovation Solution
A portable system using multiple optics modules and vibratory motors for simplified mixing, capable of detecting fluorescence emitted from samples, allowing for on-site analysis of DNA sequences using RPA amplification techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional PCR or RPA methods are used for nucleotide sequence detection, then detection capability is achieved, but equipment becomes bulky and complex, reducing portability
Solution Approach 1:
The patent extracts and eliminates complex components such as thermocycling equipment, fluorescence detectors, and sophisticated mixing techniques from the system. By using isothermal RPA amplification, the system removes the need for temperature cycling apparatus while maintaining detection capability through simplified optical modules and vibratory mixing mechanisms.
Solution Approach 2:
The patent replaces complex mechanical thermocycling systems with a static isothermal RPA system that uses vibratory motors for mixing instead of mechanical thermocyclers. The optical detection system replaces sophisticated fluorescence detectors with simpler optical modules that can detect nucleotide sequences without requiring complex thermal processing equipment.
2Productivity
If conventional RPA equipment is used, then DNA amplification is achieved, but equipment becomes bulky and requires sophisticated mixing techniques, reducing portability
Solution Approach 1:
The patent employs vibratory motors that generate mechanical vibrations to achieve simplified mixing of reaction components. This vibratory mixing mechanism replaces sophisticated programmable mixing techniques, enabling effective mixing through physical vibration rather than complex mechanical or programmable systems, thereby reducing equipment complexity while maintaining amplification productivity.
3Ease of operation
If portable equipment is designed, then portability is improved, but detection precision and reliability may be compromised
Solution Approach 1:
The patent segments the detection system into separate functional modules: optical modules for detection, vibratory motors for mixing, and sample holders for sample placement. This modular segmentation allows each component to be optimized independently, maintaining detection precision while enabling portability through compact, separable design that can be easily transported and operated in field conditions.
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 efficient and portable detection of nucleotide sequences, reducing the need for specialized training and equipment, facilitating remote use and cost-effectiveness.
Implementation Method 1
A portable system constructed in accordance with the provisions of the present disclosure is generally shown in FIGS. 1-2, with the system being generally referenced as numeral '4.' The system 4 includes a mounting plate 22 and data acquisition unit 24. Attached to the mounting plate 22 are a first optics module 45, a second optics module 48, a sample module 46, a first light source 52 and a second light source 54.
Implementation Method 2
The first optics module 45 includes a first optics module housing 26, a first lens 62, a first dichroic mirror 68, a first excitation filter 66 and a first emission filter 64. The second optics module 48 includes a second optics module housing 28, a second lens 72, a second dichroic mirror 78, a second excitation filter 76 and a second emission filter 74.
Data Source
AI summary
Portable systems and methods for amplifying nucleotides and for detecting nucleotide sequences in a sample are provided. The portable instruments and methods use RPA techniques for DNA amplification and detect sample fluorescence in response to amplification and/or to the presence of specific DNA sequences.