Wireless fluid sensor for inline liquid sensing in medical systems

A system for measuring one or more properties of a fluid, the system comprising:

• an infusion pump;
• a fluid container configured to contain a fluid;
• a fluid sensor assembly comprising,
• a fluid sensor comprising a flow path and one or more sensing elements at least partially exposed to the flow path, wherein the fluid from the fluid container is configured to flow through the flow path, and
• a first processor in communication with the fluid sensor and comprising a signal conditioning circuitry, and an antenna;
• a first fluid line configured to place the fluid container in communication with the flow path of the fluid sensor;
• a second fluid line configured to place flow path of the fluid sensor in communication with a patient;
• and
• a second processor in communication with the fluid sensor assembly and comprising a reader, wherein the second processor is positioned on the infusion pump;
• wherein the fluid sensor is configured to output one or more output signals representative of a change in resistance of the one or more sensing elements, and wherein the change of resistance of the one or more sensing element is indicative of one or more properties of the fluid flowing through the flow path of the fluid sensor;
• wherein the signal conditioning circuitry is configured to receive and process the one or more output signals from the fluid sensor,
• wherein the antenna of the first processor is configured to transmit the signals processed by the signal conditioning circuitry across the infusion pump;
• wherein the reader of the second processor is configured to receive the signals transmitted by the antenna of the first processor;
• and
• wherein the second processor is configured to process the signals received by the reader.

A system for measuring one or more properties of a fluid, the system comprising:

• an infusion pump;
• a fluid sensor assembly comprising a fluid sensor, a fluid sensor signal conditioning circuitry, and an antenna;
• a processor in wireless communication with the fluid sensor assembly and comprising a reader, wherein the processor is positioned inside the infusion pump;
• wherein the fluid sensor is configured to output one or more output signals indicative of one or more properties of a fluid flowing through the fluid sensor;
• wherein the signal conditioning circuitry is configured to receive and condition the one or more output signals from the fluid sensor, wherein the antenna of the fluid sensor assembly is configured to transmit the signals processed by the signal conditioning circuitry across a wall of the infusion pump;
• wherein the reader of the processor is configured to receive the signals transmitted by the antenna of the fluid sensor assembly;
• and
• wherein the processor is configured to process the signals received by the reader.