Disposable dual-action reciprocating pump assembly

A disposable pump part for inserting into a compartment of a pump device, the disposable pump part comprising:

• an input port for intaking fluid;
• an output port for outputting the fluid;
• and
• a single-piston dual-action reciprocating assembly for pumping the fluid, the assembly comprising:
• a single piston;
• non-return valves, configured to open and close interchangeably in response to the pumping by the single piston, so as to provide dual-action reciprocating pumping of fluid through the output port at opposing directions of motion of the single piston;
• and
• a rod configured to be coupled to a rotary motor of the pump device, so as to drive the single piston;
• and
• a guide hub and a bar, the guide hub configured to move in a reciprocating motion with the rod to reduce variations in motion speed of the single piston and thereby reduce a pulsation in the outputted fluid.

A manufacturing method, comprising:

• assembling a single-use pump part comprising:
• an input port for intaking fluid;
• an output port for outputting the fluid;
• a single-piston dual-action reciprocating assembly for pumping the fluid, the assembly comprising:
• non-return valves, configured to open and close interchangeably in response to the pumping to provide dual-action reciprocating pumping of fluid through the output port at opposing directions of motion of a piston;
• and
• a rod configured to be coupled to a rotary motor, so as to drive the dual-action reciprocating assembly;
• and
• a guide hub and a bar, the guide hub configured to move in a reciprocating motion with the rod to reduce variations in motion speed of the single piston and thereby reduce a pulsation in the outputted fluid;
• and
• packaging the assembled pump part in a sterile package.

A method, comprising:

• inserting a disposable single-piston dual-action reciprocating pump part into a compartment of a pump device, the pump part comprising:
• a rod configured to be coupled to a rotary motor of the pump device;
• and
• a first pulsation reduction element configured to reduce variations in motion speed of the single piston and thereby reduce a pulsation in an outputted fluid, the first pulsation element comprising a guide hub and a bar, the guide hub being configured to move in a reciprocating motion with the rod of the dual-action reciprocating assembly;
• connecting an input port of the pump part to a fluid supply;
• connecting an output port to a fluid supply line of a medical device such that the disposable single-piston dual-action reciprocating pump part is configured to provide fluid through the output port at opposing directions of motion of the piston;
• and
• operating the pump device from a control panel of the pump device.