Medical devices provide a connector enclosure that includes a feedthrough integrated into the base of the connector enclosure. The sealed linear encoder includes a scale unit arranged in a hollow body that is mounted to a mounting structure associated with the first object and includes a slot which extends in a direction of measurement. Either the inlet gas distributor or the filter bed may be rotated to distribute the gases. At least two gripping towers are formed unitarily with the bottom wall and project upwardly a distance greater than the thickness or height of the medical implement.