Wilderness Medicine Updates Fast Push #2: Safeback SBX for Avalanche Asphyxia Prevention
Oct 10, 2025
Discover the revolutionary SafeBack SBX device designed to save lives during avalanches by supplying air to users trapped in snow. The podcast unpacks a significant study showing it can delay asphyxia by extending oxygen supply far beyond typical survival times. Hear how SafeBack compares to traditional airbags, proving to be a complementary technology rather than a replacement. Delve into its potential applications for tree well incidents and safety improvements for ski patrollers, while considering practical challenges in deployment.
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How SafeBack SBX Works
- SafeBack SBX is a fan-based system that draws air through the pack and delivers up to 150 L/min to the user's face.
- It runs ~90 minutes on disposable lithium AA batteries and weighs ~500 grams, making it lighter than most airbags.
Asphyxia Drives Avalanche Mortality
- Asphyxia causes roughly 75% of avalanche deaths and survival drops sharply after about 10 minutes.
- Prior data suggest supplemental air can extend tolerated simulated burial times from ~13 to ~22 minutes.
Independent Trial With Industry Support
- SafeBack funded independent testing by URAC Research Group and allowed publication regardless of outcome.
- That openness strengthens confidence in the trial's impartiality and results.