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Related Experiment Video

Updated: Apr 23, 2026

Spatula Montevideo Device for the Vitrification of Mammalian Embryos

Spatula Montevideo Device for the Vitrification of Mammalian Embryos

Published on: June 6, 2025

Digital microfluidic processing of mammalian embryos for vitrification.

Derek G Pyne¹, Jun Liu¹, Mohamed Abdelgawad²

¹Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario, Canada.

|September 25, 2014

Summary

This study introduces a digital microfluidic device for automated mammalian embryo vitrification. This automated system enhances cryopreservation efficiency and safety for single embryos.

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Area of Science:

Reproductive biology
Biotechnology
Microfluidics

Background:

Cryopreservation is vital for biological and clinical applications, requiring precise sample handling.
Current methods for mammalian embryo vitrification can be labor-intensive and prone to error.
Microfluidic devices offer potential for miniaturized and automated biological sample processing.

Purpose of the Study:

To develop and validate a digital microfluidic device for automated sample preparation in mammalian embryo vitrification.
To demonstrate the use of micro-droplets as micro-vessels for single embryo transport during vitrification.
To compare the advantages of this automated microfluidic approach against manual and channel-based methods.

Main Methods:

Design and implementation of a digital microfluidic platform for precise liquid handling.
Utilizing individual micro-droplets to encapsulate and transport single mouse embryos.
Automated sequential exposure of embryos to cryoprotective agents (CPAs) within micro-droplets.
Development of protocols for loading and retrieving embryos from the microfluidic device.

Main Results:

Successful automation of the complete vitrification procedure for individual mouse embryos.
Demonstration of controlled cryoprotectant concentration gradient generation within micro-droplets.
Achieved high efficiency in loading and retrieval of embryos from the microfluidic system.
Showcased advantages over manual methods, including reduced handling and improved consistency.

Conclusions:

Digital microfluidics provides an effective platform for automated, high-throughput mammalian embryo vitrification.
The micro-droplet approach offers enhanced control over cryoprotectant exposure and embryo handling.
This technology holds promise for improving the success rates and accessibility of assisted reproductive technologies.