Transfer-Separation Capillary Junction for Faster Electrophoresis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Capillary electrophoresis instruments face limitations in throughput due to fixed capillary length requirements, making it difficult to access samples and reagents efficiently.
Innovation Solution
The integration of a transfer capillary coupled with a separation capillary forms a T-junction or cross-junction, allowing for a shorter separation capillary length while maintaining compatibility with existing instruments, utilizing a sheath channel to draw samples and reagents through vacuum application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the separation capillary length is reduced to increase throughput, then analysis time decreases and productivity improves, but the capillary cannot access samples and reagents in existing fixed-length instrumentation systems
Solution Approach 1:
The capillary system is divided into two separate capillaries: a transfer capillary that accesses samples and reagents, and a separation capillary that performs the electrophoresis. This segmentation allows each capillary to be optimized for its specific function, with the separation capillary being short for high throughput while the transfer capillary handles sample access in the fixed-length instrumentation system.
Solution Approach 2:
The transfer capillary acts as an intermediary between the sample/reagent sources and the separation capillary. It bridges the gap between the fixed-length instrumentation requirements and the need for short separation capillaries, enabling sample transfer without requiring the separation capillary itself to be long.
2Adaptability or versatility
If a fixed-length capillary is used to maintain compatibility with existing instruments, then instrument compatibility is maintained, but analysis time increases and throughput decreases
Solution Approach 1:
By segmenting the capillary system into transfer and separation functions, the separation capillary can be optimized for short length (reducing analysis time) while the transfer capillary maintains the necessary length for instrument compatibility. The combined system adapts to existing instrumentation without sacrificing throughput.
3Productivity
If the separation capillary is made shorter to reduce analysis time, then productivity increases, but reagent consumption and sample access become problematic
Solution Approach 1:
The transfer capillary handles reagent delivery and sample loading, while the short separation capillary performs only the electrophoresis function. This allows reagents to be delivered efficiently through the transfer capillary without requiring excessive reagent consumption in the separation capillary, maintaining both speed and reagent efficiency.
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
This configuration significantly enhances sample throughput by reducing analysis time and reagent consumption, achieving faster separation and detection of biological materials.
Implementation Method 1
suction applied through a sheath interface of the transfer capillary and the separation capillary can draw sample/buffer from such reservoirs
Implementation Method 2
The separation capillary can be configured for separation of analytes contained within the sample, for example when an electric potential (i.e., voltage) is applied across the separation capillary
Data Source
AI summary
Some embodiments described herein relate to capillary-containing cartridges suitable for use with capillary electrophoresis instruments. Embodiments described herein generally relate to cartridges that include a transfer capillary coupled to a separation capillary. The transfer capillary can be configured to be disposed in sample reservoirs and/or buffer reservoirs. Suction applied through a sheath interface of the transfer capillary and the separation capillary can draw sample/buffer from such reservoirs and bring the sample/buffer into contact with the separation capillary. The separation capillary can be configured for separation of analytes contained within the sample, for example when an electric potential (i.e., voltage) is applied across the separation capillary.