Patent ID: 9446182
Filing Date: 2016-09-20
CPC Classification: A61J,A61M,F16K

Claim Text:
1. Method for performing a filling and recirculation process of a blood-side conducting system of a dialysis machine using a filling device including a spike configured for connecting to a single fluid connector of a medical fluid container of a fluid system and a 3-way switch arranged downstream of the spike that is configured to remain fluidly connected with the spike while the filling device is in operation, wherein the 3-way switch has a second conduit that is adapted such that an arterial line section of the blood side conducting system can be detachably connected while the filling device is in operation, wherein the method comprises the steps of: a. connecting the spike to the single fluid connector of the medical fluid container with the 3-way switch completely closed and connecting the arterial line section to the second conduit of the closed 3-way switch with a venous fluid line section of the blood side conducting system open to the environment; b. flushing a fluid flow path extending along the arterial line section and the venous fluid line section by fluidly connecting the spike with the second conduit of the 3-way switch; c. completely closing the 3-way switch and connecting the venous fluid line section to a third conduit of the 3-way switch; d. recirculating filled-in fluid in the fluid flow path by short-circuiting the second and third conduits on the 3-way switch and simultaneously closing off the spike; e. completely closing the 3-way switch and uncoupling the venous fluid line section from the third conduit and repeatedly flushing the fluid flow path according to step b.; and f. completely closing the 3-way switch in preparation for the subsequent connection of the arterial and venous fluid line sections to a patient.