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WeighMed
by Atrax
Cryogenic storage is safety‑critical in fertility care, where eggs, sperm, and embryos must be maintained at ultra‑low temperatures at all times. WeighMed is a cloud‑connected monitoring system that uses integrated weigh‑scale technology to continuously measure liquid nitrogen levels in Dewar tanks, giving clinics real‑time visibility of storage performance.
Traditional approaches rely on manual checks, creating gaps between inspections and limited visibility outside working hours. Undetected nitrogen loss or tank failure can result in irreversible loss, presenting unacceptable risk.
Atrax partnered with InFact to translate early concepts into a clinical‑ready system. Working closely with embryologists and technical teams, InFact led the system architecture and engineering, delivering embedded hardware, firmware, secure local and cloud infrastructure, and intuitive interfaces.
Now deployed in clinics, WeighMed reduces manual intervention while providing continuous confidence in mission‑critical storage.
WeighMed enables IVF labs to confidently maintain compliant storage systems.
The Project
The project team works side-by-side with the client to ensure product functionality, marketability and usability are resolved through proof of concept prototypes. These are tested and refined to ensure all aspects of the solution are understood, key risks are identified and project goals are achieved.
THINK
With a clear understanding of the clinical risks and operational constraints, InFact reframed manual cryogenic monitoring as a continuously operating, safety‑critical system. Early technical decisions prioritised reliability, ultra‑low power operation, and long battery life, recognising that uninterrupted performance was essential in environments where failure carries irreversible consequences.
System development centred on a hybrid local‑and‑cloud architecture, balancing dependable on‑site operation with secure, remote visibility. Embedded hardware leveraging emerging Wi‑Fi 6 technology was combined with local servers and cloud services. This supports real‑time monitoring, alerting, and over‑the‑air updates. The system maintains resilience in clinical settings where connectivity cannot be assumed.
Progress was driven through iterative prototyping and deployment in live fertility clinics. Hardware, firmware, and user interfaces were developed in parallel, with each iteration refining reliability, usability, and clinical fit. Testing at scale made sure the system performed consistently across multiple tanks and sites, aligning technical capability with real‑world workflows.
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LISTEN
InFact partnered with Atrax and engaged directly with fertility clinic embryologists and technical staff to understand the practical realities of monitoring cryogenic storage systems in active clinical environments. With Fertility Associates acting as a lead user, early discovery work focused on how storage infrastructure is managed day to day, and how clinicians interact with monitoring systems alongside competing clinical demands.
This work surfaced critical operational risks inherent in manual, periodic inspection processes. Monitoring tasks are often interrupted, rely heavily on human vigilance, and leave gaps between checks - particularly outside normal working hours when staff are not on site. The core challenge was not just in detecting failures, but addressing the risk created by delayed awareness in environments where temperature excursions can have irreversible consequences. For the team, discovery centred on understanding these failure modes, clarifying accountability, and defining the conditions required for reliable, continuous monitoring that aligns with real‑world clinical workflows.
OUTCOME
Through the delivery of WeighMed, a safety‑critical monitoring concept was taken from early risk identification through to a robust, deployable system operating in clinical environments. End‑to‑end system architecture and multidisciplinary engineering enabled the integration of embedded hardware, firmware, and cloud infrastructure into a reliable platform at scale, where continuous operation and failure tolerance are non‑negotiable.
The project strengthened capability in connected medical devices, ultra‑low‑power systems, and hybrid local‑and‑cloud architecture. All while reinforcing the importance of designing for real clinical workflows and edge‑case conditions. These learnings now underpin the development of other mission‑critical monitoring platforms, extending the impact of WeighMed beyond a single product into a broader foundation for scalable, high‑reliability healthcare systems.
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Eliminating manual level monitoring and providing low-level tank alerts along with visual status of evaporation rates and dewar tank interactions across 75+ tanks has allowed the clinics to refine their processes and provide stakeholders with more confidence.
Client feedback, Fertility Associates