Bme 482 design of biodevices interim report pg 8 of

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BME 482 Design of Biodevices, Interim Report, Pg. 8 of 22
Figure 6: Wireless EKG System Model Programmable Wireless Electrode System for Medical Monitoring Patent: US 2003004-0305A1 There were five inventors involved in the creation of this patent and the design was sponsored by Motorola Inc. The inventors of this design are Richard Ng, Salvador Lopez, Mohammad Khair, Sanjar Ghaem, and William Olson. Together, they created a programmable wireless electrode system for the intent of medical monitoring. The system includes both a base unit and twelve lead of wireless but remotely programmable transceivers which are located on the electrode patches [7] . The base unit contains a wireless transceiver for signal detection, both sending and receiving, to the wireless transceivers on the sensor. Some data that can be shared between the electrodes and the base unit are data acquisition commands and transmission control commands [7] . Figure 7 below, displays the configuration of the electrode patches which will be placed on the subject. The number 20 on each of the patches in Figure 7 below represents the generic wireless transceivers on the electrode surface [7] . The wireless transceiver is conveniently designed to snap onto the electrode patch as displayed by the number 22 in the figure below. To identify each of the twelve labs or three as displayed in the figure below, a set of pre-printed labels is removed from a plastic backing and placed on the wireless transceivers as represented by the number 135 in the figure below [7] . The use of these labels helps identify the electrode and the signal it produces. This system is more ideal for the Wired Technokrats design as it interprets all 10 electrode patches used in a twelve lead system. BME 482 Design of Biodevices, Interim Report, Pg. 9 of 22
However once again it does go above and beyond the Wired Technokrats design in that it also designs a system to interpret the results; whereas the Wiredtechnokrats is mainly focused on the design of the electrode and making it more cost-effective. Despite the creation of the system, the team really liked the snap on theory for the wireless transceiver to the electrode patch. The team also liked the design and model of the electrode patches as well as the idea for the label for each of the transceivers. Figure 7: Perspective View of Three Wireless Transmitters Chart 1 below is a flow chart for the engineering design of the programming for the wireless transceivers used to send and receive the bio-potential signal acquisition from the patient to the monitor. In this flowchart, the base unit is set up before the electrodes are powered up and read through the ECG system [7] . The electrode then scans through a list of default programming channels before it is sent a low power programming command through the default transmit channel from the base unit. If the electrode receives this programming command it continues on through the flow chart, however, if it doesn’t receive the command, it retracts back to scanning the default list before continuing on down the line again. If it receives the command, the electrode is able to transmit a response message through the transmit channel back to the ECG system [7] . If the ECG system or the base unit receives the signal it continues

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