E-LEET

The Evaluation Lightweight Electroadhesive ExoTendon (E-LEET) supports the neck by counterbalancing heavy head-mounted equipment with the right support at the right time and then gets out of the way.

This evaluation unit is geared for researchers and early adopters, featuring:

Three operational modes: Counterbalance, Protection, and Transparent
Digital control for defining custom control strategies
Pro Flight Gear offers helmet and PFE/AFE alterations for LEET integration.
Additional features and add-ons (see full description)

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Description

Overview

ESTAT Actuation's Lightweight Electroadhesive ExoTendon (LEET) was with one goal: to save your neck.

Originally developed to assist Air Force personnel counterbalance the loads born by their neck muscles caused by head-mounted equipment, like helmets equipped with Joint Helmet-Mounted Cueing System (JHMCS) or night vision goggle (NVGs), the E-LEET is finding new life in unexpected places: assisting surgeons bear the load of the augmented-reality goggles.

But its utility doesn't end there anymore than it did with pilots. Anyone who suffers from chronic neck pain caused by heavy head-mounted equipment could potentially benefit from this innovative electroadhesive system.

This Evaluation LEET (E-LEET) is the perfect starting point for researchers and early-adopters to find new use cases and strategies for mitigating chronic neck pain.

How it Works

1. A flexible transmission transmits loads between the helmet and harness to counterbalance head-mounted equipment.

2. A compact, power-efficient clutch enables mode transitions to provide the right support and the right time.

3. A counterbalance mechanism provides support.

Three Operational Modes

Counterbalance Mode: the LEET acts like a spring, counterbalancing the weight of head-mounted equipment, such as JHMCs or NVGs.
Protect Mode: if accelerometers detect a high-G event, tethers lock to transmit inertial loads from the head to the parachute harness, sparing the neck (similar to guy wires redirecting wind forces acting on cell towers to the ground).
- High-G manikin tests at Wright Patterson AFB demonstrated an 84% reduction in injury risk in 15 G events in this mode.
Transparent: allows the device to “get out of the way” of the user.