US Patent 11788046 Cassette for sterility testing

The invention provides a device for growing cells—referred to as a cassette. The cell culturing device includes a housing that contains a lid having an optically clear window; a fluid distribution channel; a sample injection port fluidically connected to the fluid distribution channel; a base housing a porous media pad; and a media injection port fluidically connected to the media pad. The lid mates to the base to form a sterile seal; the fluid distribution channel is disposed over the media pad, which is viewable through the optical window; and sample fluid introduced into the fluid distribution channel is distributed evenly to the media pad, e.g., via a plurality of channels. The invention also provides kits that include cassettes of the invention and a tube set.