Lifespine provides a quick and simple escape route for users of all abilities in the event of a housefire or similar emergency. Using its integrated belay and sling, users can first lower any household members with physical limitations or disabilities before descending via the ladder themselves.

Children and older adults are twice as likely to die in a home fire as the U.S. population at large. At the same time, the fire escape ladder has remained functionally unchanged since 1904, and can be virtually unnavigable to users with limited mobility.

To address this issue, we found that belayed descent—inspired by real-world components such as the Petzl Gri Gri and helicopter rescue harnesses—could broaden the scope of possible users.

Through the use of nesting, vertically extruded rungs, a traditional ladder feature could simultaneously act as a channel for the belayed user.

The resulting rung channel shape was devised for an optimized nesting geometry, being able to fold into itself without adding significant thickness to the rung stack, while also providing ample stepping space for descending users' feet.

Lifespine's deployment procedure is designed to be as concise and sequential as possible in order to reduce cognitive strain in an already high-stress scenario.

Using its integrated belay and sling, Lifespine provides a quick, effective, and cognitively comfortable escape route for users of all abilities in the event of a house fire or similar emergency.