More Questions Raised on Lung Fluid Measurement Device
Sensible Medical Innovations (SMI) countered arguments by the GPS Innovation Alliance opposing a waiver SMI is seeking for a system that uses ultra-wideband (UWB) medical imaging to obtain lung fluid measurements for congestive heart failure patients in a noninvasive way…
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(see 1803130030). But two other commenters also raised question in replies. GPS systems won’t be compromised by its ReDS (remote dielectric sensing) System, SMI said in reply comments in docket 18-39. “The ReDS System is used indoors, while satellite navigation systems primarily operate outdoors,” SMI said. “ReDS devices also use low power transmissions, and energy is coupled into a patient’s body, resulting in extremely low power leakage -- at least 27 dB below the limits that are applicable to unintentional consumer appliances.” Globalstar raised concerns about mobile satellite service operations at 1.6 GHz. “Before acting on the Waiver Request, the Commission should require SMI to submit a more detailed technical showing demonstrating that its UWB devices will not cause harmful interference to licensed services above 1 GHz, including Globalstar’s MSS offerings,” Globalstar said. Philips Healthcare questioned potential interference to wireless medical telemetry service equipment “deployed at hundreds of hospitals throughout the United States,” which primarily uses spectrum at 1395-1400 and 1427-1431.5 MHz. “Our concern is heightened because Sensible’s proposed device is intended to be used in the same healthcare facilities, including potentially on the same patients being monitored by Philips’ wireless monitoring systems,” the company said.