Abstract: A multi-user collaboration system, and a method of providing the same are disclosed. The method involves creating a workspace to which a plurality of digital materials can be shared by one or more internal users; receiving, from an internal user of the one or more internal users, an external collaboration request to collaborate with an external user type; in response to receiving the external collaboration request: creating a sub-workspace in association with the workspace for the external user type; and assigning a sub-workspace user group to the sub-workspace; and displaying a set of feedback on the one or more digital materials to a user. The sub-workspace is accessible by an external user associated with the external user type to provide a sub-workspace feedback in respect of one or more digital materials of the plurality of digital materials shared to the sub-workspace.

Abstract: A medical airway device includes a housing having at least one breathing circuit port and including an airway filter arranged to filter air flowing through the at least one breathing circuit port. The airway filter includes a layered filter including at least a first separate filter layer and a second separate filter layer being stacked on top of each other so that neighbouring separate filter layers abut each other. The layered filter has a first surface being laminated with a first scrim layer and a second surface being laminated with a second scrim layer. Each separate filter layer is a non-woven fiber layer.