Patent ID: 11925786
Assignee: GE PRECISION HEALTHCARE LLC
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 0:
1. A system for drawing a solution, the system comprising:
a filter having an input port, a first output port, a second output port, and a flow path defined in part by the input port and the second output port;
a vacuum source in fluid communication with the first output port and operative to apply a vacuum to the flow path;
an actuator operative to facilitate movement of the solution along the flow path;
a normally open one-way check valve disposed between the second output port and a downstream device and operative to restrict flow of the solution from the downstream device to the second output port;
a normally closed one-way check valve;
a flow exchanger having:
a first port in fluid communication with the normally open one-way check valve;
a second port in fluid communication with the downstream device;
a third port in fluid communication with the normally closed one-way check valve;

wherein the flow exchanger is operative to allow the solution to flow from the second output port to the downstream device via the first port and the second port of the flow exchanger without passing through the third port of the flow exchanger;
wherein the actuator facilitates movement of the solution from the downstream device to a sensor that collects a sample of the solution;
wherein the sensor is in fluid communication with the second output port;
wherein when the downstream device is activated, a portion of the solution is configured to flow out of the downstream device to the sensor via the third port and the second port of the flow exchanger without passing through the first port of the flow exchanger;
wherein the downstream device is directly coupled to the second port of the flow exchanger; and
wherein the normally open one-way check valve is directly coupled to the second output port and the first port.