Method for priming a blood line set
AssigneeFresenius Medical Care Deutschland GmbH
InventorsWolfgang Biesel, Maria Millan Galante
Life of this patent
Estimating the term…
Abstract
A method for priming a blood tubing set having a venous line and an arterial line whose connections at the patient side are in communication with two separate inlets of a chamber of, in particular, a bag and whose connections at the machine side are in communication with a dialyzer. The method includes the steps of parallel filling of both the venous and the arterial lines via a feed line so that priming liquid flows through both inlets into the chamber; and circulation of the priming liquid in the circuit of the lines, the dialyzer and the chamber via a pump so that one of the inlets of the chamber acts as an inlet and the other as an outlet.
Claims17
A method for priming a blood tubing set having a patient side and a filter side, said blood tubing set including a venous line and an arterial line each having a connection at the patient side and a connection at the filter side, said connections of the venous and arterial lines at the patient side being in communication with two separate ports of a chamber of a bag and said connections of the venous and arterial lines at the filter side being in communication with a dialyzer, said venous and arterial lines, said dialyzer and said chamber forming a circuit, said method comprising the steps of:
- starting the priming by filling of the venous line and the arterial line with priming fluid via a feed line, said priming liquid from said feed line flowing via the venous and arterial lines through the ports into the chamber, the chamber being empty at the start of the priming;
- and circulating the priming liquid in the circuit of the venous and arterial lines, the dialyzer and the chamber via a pump so that one of the ports of the chamber acts as an inlet and the other as an outlet.
A method for priming a blood tubing set having a patient side and a filter side and at least one pump, said blood tubing set including a venous line and an arterial line each having a connection at the patient side and a connection at the filter side, said connections of the venous and arterial lines at the patient side being in communication with two separate ports of a chamber of a bag and said connections of the venous and arterial lines at the filter side being in communication with a dialyzer, said venous and arterial lines, said dialyzer and said chamber forming a circuit, said method comprising the steps of:
- starting the priming by filling the arterial line with priming fluid via a feed line while the pump is turned off, said priming fluid from said arterial line entering the chamber through a first one of said two ports;
- closing a valve which is arranged at said first one of the ports to fill the venous line by operating the pump, said priming liquid from said venous line entering the chamber through a second one of the said two ports;
- and circulating the priming liquid in the circuit of the venous and arterial lines, the dialyzer and the chamber via the pump so that one of the two ports of the chamber acts as an inlet and the other as an outlet.
Dependencies are inferred from the claim text.