Connection assembly for establishing a fluidic connection between a medical device and a patient-side coupling unit

A system comprising:

• a patient-side coupling unit;
• and
• a connection device connected to the patient-side coupling unit, the connection device comprising:
• a supply hose connected to or connectable to a medical device;
• a patient-side connection piece connected to the supply hose, wherein the supply hose and the patient-side connection piece together are configured to establish at least one a fluid connection between the medical device and the patient-side coupling unit;
• a flexible fluid measuring hose;
• an adapter comprising a rigid adapter tube and an adapter tube holder, wherein the rigid adapter tube is in fluid communication with the patient-side connection piece, wherein the patient-side connection piece
• holds the adapter tube holder,
• wherein the adapter tube holds a patient-side end section of the fluid measuring hose,
• wherein the adapter tube holder at least partially encloses the adapter tube and holds the end section of the fluid measuring hose, which end section is held by the adapter tube in a predefined position relative to the patient-side connection piece,
• wherein the connection device is configured to establish a measuring fluid connection comprising the fluid measuring hose between a fluid measuring device and a predefined fluid sampling position, which fluid sampling position is located in an interior of the patient-side connection piece, and
• wherein a patient-side end of the adapter tube is located at the fluid sampling position.

A process for manufacturing a connection device the process comprising the steps of:

• providing a connection device comprising:
• a supply hose connected to or connectable to a medical device;
• a patient-side connection piece connected to the supply hose, wherein the supply hose and the patient-side connection piece together are configured to establish a fluid connection between the medical device and the patient-side coupling unit;
• a flexible fluid measuring hose;
• an adapter comprising a rigid adapter tube and an adapter tube holder, wherein the rigid adapter tube is in fluid communication with the patient-side connection piece, wherein the patient-side connection piece holds the adapter tube holder, wherein the connection device is configured to establish a measuring fluid connection comprising the fluid measuring hose between a fluid measuring device and a predefined fluid sampling position, which is located in an interior of the patient-side connection piece, and wherein a patient-side end of the adapter tube is located at the fluid sampling position;
• pushing the fluid measuring hose into the supply hose such that a patient-side end section of the fluid measuring hose protrudes over the supply hose after the pushing in;
• moving the adapter relative to the supply hose such that the protruding patient-side end section of the fluid measuring hose is pushed into the adapter tube during the movement;
• connecting the adapter to the patient-side connection piece;
• and
• connecting the adapter to the supply hose, wherein the adapter tube holder at least partially encloses the adapter tube and holds the end section of the fluid measuring hose, which end section is held by the adapter tube in a predefined position relative to the patient-side connection piece.