Acoustic Modem for IV Fluid Identification
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Solution Overview
Problem
In healthcare settings, particularly in hospitals, RFID technology for identifying IV fluid bags can lead to confusion and errors due to signal interference from multiple tags in close proximity, compromising patient safety and workflow efficiency.
Innovation Solution
The use of an acoustic modem system that transmits identifying information through a fluid conduit, allowing direct contact transmission between the IV fluid container and the pump, eliminating interference from nearby tags.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If RFID technology is used to identify IV fluid bags, then identification capability is improved, but signal interference and identification errors occur due to multiple tags in close proximity
Solution Approach 1:
The patent introduces an acoustic modem as an intermediary communication device that converts RFID signals into acoustic signals transmitted through the fluid conduit. This mediator isolates the identification system from electromagnetic interference, allowing reliable communication between the IV fluid bag and pump even when multiple RFID tags are present in close proximity.
Solution Approach 2:
The patent replaces the electromagnetic field-based RFID communication system with an acoustic wave-based communication system. By substituting electromagnetic waves with acoustic waves traveling through the fluid, the system eliminates signal interference problems caused by multiple RFID tags operating in the same electromagnetic spectrum.
2Adaptability or versatility
If RFID tags are placed on multiple IV bags in the hospital room, then identification coverage is improved, but signal confusion and error risk increase
Solution Approach 1:
The acoustic modem acts as a selective mediator that only transmits acoustic signals from the IV fluid bag physically connected to the pump through the fluid conduit. This eliminates signals from other IV bags in the room, ensuring that only the relevant identification information is received, thus preventing signal confusion while maintaining broad identification coverage.
Solution Approach 2:
The patent applies local quality by making the communication channel specific to the physical connection between the pump and individual IV fluid bag. The acoustic communication is localized to the fluid conduit, ensuring that each pump only receives identification signals from its connected bag, not from other bags in the vicinity.
3Device complexity
If manual bar code scanning is used for IV fluid identification, then system complexity is reduced, but labor requirements and human error increase
Solution Approach 1:
The patent implements self-service by enabling the IV fluid bag to automatically transmit its identification information through the fluid conduit to the pump via acoustic signals. This eliminates the need for manual bar code scanning by healthcare workers, allowing the system to perform identification automatically and improving workflow efficiency without significantly increasing device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution ensures accurate identification and control of IV fluids, reducing the risk of errors and enhancing automation in healthcare workflows by using acoustic signals that travel through the fluid conduit, ensuring only the connected IV bag is recognized by the pump.
Implementation Method 1
transmitting from the fluid container an acoustic signal that passes through the fluid conduit to the interrogator or reader
Data Source
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AI summary
The various embodiments provide systems, devices, and methods which include an acoustic tag configured to transmit an acoustic signal through a contact medium that may be received by an acoustic modem, with the acoustic signal configured to transmit information. By modulating sound traveling through an acoustic connection between the fluid container and a pump, meter or valve, information such as an identifier of the fluid or container may be transmitted without risk of confusion with other fluid containers in the vicinity. In a medical embodiment, IV fluid and the IV drip tube provide a fluid and plastic acoustic connection to an IV pumping or metering device and an IV bag through which sound may be transmitted. The transmission of identification information through this physical connection may insure that the pumping or metering device only communicates with the IV bag coupled to the pump. Acoustic tags may be active or passive.