The second end 44 of the endcap 40 can be sealingly engaged at the distal end 38 of the sheath 36 by a connector 52, which is described in my prior disclosure referred above in the Reference to Related Invention, or it may be sealingly engaged with the distal end 38 of the sheath 36 by connectors 52, known to the art, such as glue, tape or other sealants.