Cryogenx Raises €1.9 Million to Accelerate Portable Cooling Technology for Heatstroke Prevention
London-based healthtech firm Cryogenx (https://www.cryogenx.com/) has raised fresh capital to scale up its portable cooling technology aimed at countering heatstroke and extreme heat stress. In its latest funding round, Cryogenx secured €1.9 million in seed financing to drive further development and commercialization of its core product.
Cryogenx’s signature device, dubbed the CGX1, is described by the company as an “ice bath in your backpack”—a field-deployable system capable of rapidly lowering core body temperature without reliance on refrigeration, ice, or cold-chain logistics. The startup says the device is tailored for high-risk, high-heat environments such as military operations, first responders, industrial worksites, and sports settings.
Part of the capital comes from the UK Innovation & Science Seed Fund (UKI2S), which invested approximately €495,000 in the round as the fund manager via Future Planet Capital. UKI2S had previously committed around £430,000 during Cryogenx’s earlier seed efforts. Other contributors in the latest round include existing investors and supporters aligned with defense and health technology.
Earlier, Cryogenx had raised £800,000 in seed funding, with £150,000 attributed to investment by the British Design Fund. That financing was intended to support the company’s move into its first formal production run, early testing, and partnerships with academic institutions. The new €1.9 million funding builds on that base, enabling Cryogenx to accelerate regulatory clearance efforts (including toward U.S. FDA pathways), expand manufacturing, and scale international deployment.
Cryogenx was founded to address the growing global risk of lethal heat events under climate change. The company states that, by 2030, up to 700 million people may be exposed to extreme heat for which conventional mitigation strategies are insufficient. Its device technology works via a compact coolant system that interfaces with a thermally conductive pad applied to the patient’s torso. This approach is intended to mimic the cooling effects of immersion in ice water, but in a far more portable and rapid form factor.
The startup is operating at the intersection of medical technology and defense, with dual-use applications in civilian sectors (e.g. construction, mining, firefighting) as well as support for military and emergency operations. Cryogenx’s funding strategy is aligned with its ambition to bring life-saving cooling interventions to remote and high-stress environments, where timely treatment of heatstroke can mean the difference between life and death.
According to company profiling databases, Cryogenx has now raised a total of approximately $3.23 million in funding over its lifecycle. The newly secured funds are expected to underpin both technical development and go-to-market execution as the startup pushes for commercialization and real-world deployments.
With regulatory, manufacturing, and distribution hurdles ahead, Cryogenx faces the challenge of validating efficacy, scaling reliable supply chains, and securing governmental and institutional partnerships. But with this infusion of capital and backing from key stakeholders like UKI2S and the British Design Fund, the company appears well positioned to move forward with its vision of making rapid, portable cooling accessible wherever extreme heat threatens human life.
