Automated Fraction Collector for Exosome Isolation

The patent replaces manual mechanical operations with an automated robotic system that performs SEC. The robotic arm automatically handles column operations, fraction collection, and sample injection, eliminating human labor while maintaining procedural simplicity through programmable sequences. This substitution resolves the contradiction by providing both ease of operation (through automation) and high reliability (through consistent robotic execution).

The system incorporates self-service features where the robotic platform autonomously performs repeated operations without human intervention. The automated fraction collector and robotic arm work independently to complete the entire SEC process, from sample injection to fraction collection and column regeneration, ensuring reproducible results while reducing operational complexity for users.

The patent employs a robotic arm with automated fraction collection capabilities that rapidly perform operations impossible at manual speeds. The system automatically injects samples, monitors elution in real-time, collects fractions at precise intervals, and regenerates columns without human intervention. This mechanical substitution dramatically increases productivity while managing device complexity through integrated automation architecture.

The robotic system enables continuous operation throughout the SEC process without idle periods between manual interventions. The automated fraction collector continuously monitors and collects fractions as they elute from the column, while the robotic arm immediately prepares the next sample or performs column regeneration. This continuous action eliminates downtime and maximizes processing speed while keeping the system design streamlined.

The patent replaces weight-based detection with optical sensors that detect liquid drops through light absorption or reflection changes. This substitution eliminates the need for manual calibration of weight thresholds while enabling fully automated operation. The optical detection system provides real-time feedback to the robotic controller, which automatically adjusts fraction collection timing without human intervention, resolving the contradiction between detection simplicity and operational automation.

The system introduces an optical intermediary (light) between the liquid drop and the detection mechanism. Instead of directly measuring drop weight, the optical sensor detects changes in light properties caused by the presence of liquid drops. This intermediary approach simplifies the detection mechanism while enabling automated control, as the optical signals can be processed electronically without manual calibration.

The robotic platform is designed as a universal system that performs multiple functions: sample injection, column operation, fraction collection, and column regeneration. By consolidating these diverse operations into a single multi-functional robotic system, the patent increases productivity without proportionally increasing complexity. The same robotic arm and controller that inject samples also collect fractions and regenerate columns, achieving high throughput through versatile automation rather than multiple specialized devices.

The patent merges the fraction collection system with the robotic automation platform, combining what could be separate devices into an integrated system. The robotic arm controls both the chromatography column operations and the fraction collector, while the optical detection system serves both drop detection and process monitoring functions. This merging reduces overall system complexity while maintaining high productivity through coordinated automation of multiple operations.