Tube insert for a hydraulic tubing set of a blood treatment apparatus

A hydraulic tubing set comprising at least one tube insert, the at least one tube insert comprising:

• a housing;
• a first connection point configured to connect a first tube section of the hydraulic tubing set to the tube insert, the first connection point comprising a first flow-through lumen with a first cross-sectional area;
• a second connection point configured to connect a second tube section of the hydraulic tubing set to the tube insert, the second connection point comprising a second flow-through lumen with a second cross-sectional area;
• a third connection point configured to connect a fluid receptacle to the tube insert;
• a main line configured to guide a liquid through the tube insert in a flow direction from the first connection point to the second connection point, the main line comprising a longitudinal extension in fluid communication with the first connection point and with the second connection point;
• a secondary line configured to guide at least a portion of the liquid out of the main line, wherein the secondary line is in fluid communication with the third connection point and is in fluid communication with the main line in an intermediate section of the tube insert arranged between the first connection point and the second connection point, the secondary line comprising a Luer-activatable valve (LAV), the LAV comprising:
• a valve housing;
• and
• a valve body;
• and
• a deflection element configured to deflect at least a portion of the liquid flowing in the main line out of the flow direction and towards the secondary line, wherein a portion of the main line comprising the deflection element comprises a third cross-sectional area that is at least 80% of the first cross-sectional area.

A blood treatment apparatus comprising at least one tube insert comprising:

• a housing;
• a first connection point configured to connect a first tube section of a dialysis liquid line or of the hydraulic tubing set to the tube insert, the first connection point comprising a first flow-through lumen with a first cross-sectional area;
• a second connection point configured to connect a second tube section of the dialysis liquid line or of the hydraulic tubing set to the tube insert, the second connection point comprising a second flow-through lumen with a second cross-sectional area;
• a third connection point configured to connect a fluid receptacle to the tube insert;
• a main line configured to guide a liquid through the tube insert in a flow direction from the first connection point to the second connection point, the main line comprising a longitudinal extension in fluid communication with the first connection point and with the second connection point;
• a secondary line configured to guide at least a portion of the liquid out of the main line, wherein the secondary line is in fluid communication with the third connection point and is in fluid communication with the main line in an intermediate section of the tube insert arranged between the first connection point and the second connection point, the secondary line comprising a Luer-activatable valve (LAV), the LAV comprising:
• a valve housing;
• and
• a valve body;
• and
• a deflection element configured to deflect at least a portion of the liquid flowing in the main line out of the flow direction and towards the secondary line, wherein a portion of the main line comprising the deflection element comprises a third cross-sectional area that is at least 80% of the first cross-sectional area.