Automated Specimen Processor Agitation Dynamics
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Solution Overview
Problem
Conventional automated specimen processing methods either achieve high throughput at the cost of large fluid consumption or low throughput with reduced fluid volumes, failing to balance both efficiency and minimal reagent use effectively.
Innovation Solution
The development of an automated system that includes a substrate arm with actuators for moving and agitating specimens, and a platform with offset surfaces to maintain a precise separation, allowing for sequential dispensing of fixatives, stains, and rinses while minimizing fluid usage through controlled agitation and evacuation phases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional automated specimen processing methods are used to achieve high throughput, then processing speed is improved, but fluid consumption increases significantly
Solution Approach 1:
The system dynamically adjusts the separation distance between the substrate and platform during processing. The substrate is moved between a first position (closer to platform) for fluid dispensing and a second position (farther from platform) for agitation and drainage, optimizing both fluid application efficiency and processing speed while minimizing reagent consumption.
Solution Approach 2:
The system employs periodic agitation cycles where the substrate is repeatedly moved between positions to facilitate fluid distribution and removal. This periodic motion enables efficient fluid usage by allowing the same fluid to be reused across multiple substrates through controlled drainage and reapplication, thereby reducing overall fluid consumption while maintaining high throughput.
2Loss of substance
If fluid volumes are reduced to minimize waste, then reagent consumption is decreased, but processing throughput is reduced
Solution Approach 1:
The system introduces a controlled fluid drainage pathway as an intermediary mechanism between the substrate and platform. This allows excess fluid to be efficiently removed and redirected for reuse on subsequent substrates, enabling minimal reagent volumes to achieve effective processing across multiple specimens, thus maintaining high throughput with reduced reagent consumption.
Solution Approach 2:
The system recovers and redistributes fluid that would otherwise be wasted. By implementing controlled drainage and reapplication mechanisms, the system enables the same fluid to be reused across multiple substrates, significantly reducing reagent consumption while maintaining processing throughput through efficient resource utilization.
3Quantity of substance
If substrate is placed close to platform for efficient fluid application, then fluid delivery is improved, but uniformity of processing is compromised
Solution Approach 1:
The system dynamically positions the substrate at different distances from the platform during different processing phases. During fluid dispensing, the substrate is positioned closer for efficient fluid delivery. During agitation and drainage phases, it is moved to optimize fluid distribution uniformity across the specimen surface, thereby achieving both efficient fluid application and uniform processing.
4Productivity
If rapid processing is implemented to increase throughput, then productivity is improved, but fluid consumption increases
Solution Approach 1:
The system implements continuous processing where fluid drainage from one substrate directly feeds into the next substrate's processing cycle. This continuous action eliminates idle time and fluid waste, allowing rapid sequential processing of multiple substrates with minimal reagent consumption, thereby achieving both high throughput and efficient resource utilization.
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 system enables rapid, uniform specimen processing with minimal fluid consumption, achieving high throughput while reducing waste and reagent volumes, thus lowering operating costs and improving processing efficiency.
Implementation Method 1
two or more offsets arranged on the top surface of the platform such that when the substrate contacts all of the offsets in the substrate processing position, the substrate and top surface of the platform are substantially parallel and form a separation of at least about 50 microns
Implementation Method 2
a second actuator arranged and configured to agitate a substrate gripped by the substrate gripper on the substrate arm
Implementation Method 3
a wave element that uses angular microscopic slide movements to cause repeated elimination and reapplication of a fluidic substance through the action of capillary motion
Data Source
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AI summary
The systems and methods disclosed herein permit automated preparation of biological specimens for examination. The disclosed systems and methods provide fast, efficient, and highly uniform specimen processing using minimal quantities of fluids. The methods include at least a fixing phase for fixing a biological specimen to a substrate such as a microscope slide, a staining phase for staining the specimen, and a rinsing phase for rinsing the specimen. One or more of the fixing, staining, and rinsing phases include one or more agitation cycles for distributing reagents evenly and uniformly across the specimen. The systems can be implemented as a standalone device or as a component in a larger system for preparing and examining biological specimens.