St George's COVID shield

Box for Aerosol and Droplet Guarding and Evacuation in Respiratory Infection

Ventilation / Negative pressure
Date 11/05/2020
Project website https://www.medrxiv.org/content/10.1101/2020.05.04.20087072v1
Was it tested ? Yes, St George’s University Hospital, London

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Design features :

  • Tapered pentagonal shape with an overall height of 50 cm and overall volume 95.8 L,
  • Four hand-ports of 135 mm diameter and two 22 mm diameter outlets for filter placement
  • The side panels can be constructed via bending or cutting into separate panels
  • Top panel is glued to side panels using hot melt adhesive
  • 3D -printed grommets, used to attach surgical gloves to the BADGER.
  • HEPA filters
  • Opening for the torso is sealed off from the outside environment using two overlapping plastic drapes
  • 12 air changes of exhaust per hour (connected to standard hospital room’s in-wall vacuum suction source)

Drawbacks :

  • Ergonomy possibly not optimized material?