Handheld Bio-Optoelectronic Alignment for Parallel Gene Sequencing
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Solution Overview
Problem
Current massively-parallel bioanalytic instruments are limited by their large size, lack of portability, requirement for skilled operation, and need for controlled environments, leading to delays in sample analysis, particularly in point-of-care settings where rapid results are needed.
Innovation Solution
A hand-held bio-optoelectronic instrument capable of delivering short optical pulses to tens of thousands of reaction chambers simultaneously, featuring a compact design with an on-board power source, alignment structure for precise optical alignment, and integrated bio-optoelectronic chip for real-time data processing, enabling portable and efficient sample analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If massively-parallel bioanalytic instruments are designed to analyze tens of thousands of samples simultaneously, then productivity is improved, but the instrument size and portability deteriorate
Solution Approach 1:
The instrument is divided into modular functional units including a laser source module, beam steering module with acousto-optic deflectors, sample chamber array, and detector module. Each module operates independently but coordinates through the alignment structure, enabling high-channel-count parallel analysis while keeping individual components compact and manageable
Solution Approach 2:
The patent implements a hierarchical nested structure where multiple sample chambers are arranged in arrays within a compact footprint, beam steering components are nested within the optical path, and the entire instrument fits within a portable housing. The alignment structure itself is integrated into the instrument body, with mounting features that nest components together precisely
2Measurement precision
If precise optical alignment is achieved for delivering pulses to tens of thousands of reaction chambers, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The alignment structure incorporates self-aligning features including precision-machined mounting surfaces with locational features, pre-adjusted beam steering components, and integrated reference marks that automatically establish correct optical paths when components are assembled. This eliminates the need for complex manual alignment procedures while maintaining high precision
Solution Approach 2:
Components are pre-aligned and pre-adjusted during manufacturing with precision mounting features that establish correct optical paths before final assembly. The beam steering assembly is pre-calibrated to deliver pulses to specific regions, and the sample chamber arrays are pre-positioned with reference marks that guide optical component placement, reducing on-site alignment complexity
3Measurement precision
If short optical pulses with rapid turn-off time are used for fluorescent signal detection, then measurement precision is improved, but power requirements increase
Solution Approach 1:
The laser source operates in pulsed mode rather than continuous wave, delivering short high-intensity optical pulses to excite fluorophores only when needed for measurement. The beam steering system similarly uses pulsed actuation of acousto-optic deflectors to direct pulses to specific sample chambers, reducing average power consumption while maintaining peak intensity for precise fluorescent detection
Solution Approach 2:
The instrument maintains measurement capability across tens of thousands of channels simultaneously through parallel operation, where multiple sample chambers are excited and detected in parallel during each pulse cycle. This continuous parallel operation maximizes the utility of each pulse event, reducing the total number of pulses needed compared to sequential scanning approaches
4Productivity
If integrated bio-optoelectronic chip with tens of thousands of pixels is used, then productivity is improved, but manufacturing precision requirements increase
Solution Approach 1:
The bio-optoelectronic chip is divided into multiple identical or semi-identical pixel units arranged in arrays, where each pixel contains a sample chamber, optical waveguides, and detector elements. This modular repetition allows standardized manufacturing processes to be applied across thousands of channels, reducing the cumulative precision burden compared to custom-designed individual channels
Solution Approach 2:
The chip design uses universal components and structures that serve multiple functions: optical waveguides that both deliver excitation light and collect emitted fluorescence, chamber walls that provide both structural support and optical interfaces, and integrated photodetectors that detect signals from multiple channels. This multi-functionality reduces the number of separate precision components needed
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 hand-held instrument facilitates rapid, portable, and efficient massively-parallel sample analysis, reducing wait times for results and enabling point-of-care genetic sequencing and other biochemical analyses without the need for a laboratory setting.
Implementation Method 1
an optical source and circuitry for producing optical pulses that can turn off to at least 40 dB below a peak value in sub-600-ps time scales
Implementation Method 2
micron scale optical waveguides
Implementation Method 3
receive fluorescent signals in parallel from the reaction chambers for sample analyses
Implementation Method 4
an optical detector arranged to receive light from the reaction chamber
Data Source
AI summary
A hand-held bioanalytic instrument is described that can perform massively parallel sample analysis including single-molecule gene sequencing. The instrument includes a pulsed optical source that produces ultrashort excitation pulses and a compact beam-steering assembly. The beam-steering assembly provides automated alignment of excitation pulses to an interchangeable bio-optoelectronic chip that contains tens of thousands of reaction chambers or more. The optical source, beam-steering assembly, bio-optoelectronic chip, and coupling optics register to an alignment structure in the instrument that can form at least one wall of an enclosure and dissipate heat.