Sealed sterile catheter dressings

A dressing device for use with an implanted catheter, the dressing device comprising:

• an adhesive plate configured to attach to a skin of a patient surrounding a catheter insertion site, the adhesive plate including an aperture configured to receive an external portion of the implanted catheter;
• a coupling body comprising at least one lumen in fluid communication with an external catheter segment;
• wherein the coupling body is directly attached to the adhesive plate and coupled to a terminal end of the external catheter segment;
• and
• a sheath extending from the coupling body to a proximal surface of the adhesive plate forming a sealed volume around the catheter insertion site, such that the sheath, plate and coupling body form a unitary device defining a sealed and sterile chamber in use,
• the plate being configured to provide a circumferential sterile seal around the insertion site;
• wherein the coupling body comprises a first fitting configured to couple to the external portion of the implanted catheter when the dressing device is sealed therearound and a second fitting formed on a side of the coupling body opposite to the first fitting, the coupling body being configured to provide a circumferential sterile seal around the implanted catheter
• wherein the sheath forms a sealed volume around the aperture and the first fitting is disposed within the sealed volume;
• and
• wherein the coupling body further comprises an annular groove, an annular ring or an annular lip;
• wherein one of the annular groove, annular ring or annular lip is configured to couple with a corresponding mating feature on the terminal end of the external catheter segment to provide the circumferential sterile seal and prevent longitudinal movement of the implanted catheter.