US 11,986,281 B2
Distributed extravasation detection system for fluid change and to control the fluids levels in a body via wireless interface based on rate of activation
Chad E. Bouton, Powell, OH (US)
Assigned to Battelle Memorial Institute, Columbus, OH (US)
Filed by Battelle Memorial Institute, Columbus, OH (US)
Filed on Feb. 26, 2021, as Appl. No. 17/249,321.
Application 17/249,321 is a continuation of application No. 14/241,171, granted, now 10,987,017, previously published as PCT/US2012/052796, filed on Aug. 29, 2012.
Claims priority of provisional application 61/530,454, filed on Sep. 2, 2011.
Claims priority of provisional application 61/530,441, filed on Sep. 2, 2011.
Claims priority of provisional application 61/530,436, filed on Sep. 2, 2011.
Prior Publication US 2021/0177297 A1, Jun. 17, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/0507 (2021.01); A61B 5/00 (2006.01); A61B 5/0537 (2021.01); A61B 8/08 (2006.01); A61M 5/168 (2006.01)
CPC A61B 5/0507 (2013.01) [A61B 5/0022 (2013.01); A61B 5/0537 (2013.01); A61B 5/4839 (2013.01); A61B 5/4875 (2013.01); A61B 5/7203 (2013.01); A61B 5/7246 (2013.01); A61B 5/7282 (2013.01); A61B 8/08 (2013.01); A61M 5/16831 (2013.01); A61M 5/16836 (2013.01); A61B 5/4878 (2013.01); A61B 5/6824 (2013.01); A61M 2205/3317 (2013.01); F04C 2270/041 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An apparatus for indicating a fluid level change in a body portion, the apparatus comprising:
a detecting component comprising a transmit antenna configured to transmit power into the body portion and a receive antenna configured to receive power passing through the body portion as received power;
a Voltage Controlled Oscillator (VCO) to adjust the transmit power from a first frequency to a second frequency;
a signal processor configured to compare the received power with a baseline received power and to generate an output signal based at least in part on the received power, the signal processor configured to compensate the received power for variations in the VCO, wherein a change in the received power, when compared with the baseline received power, is indicative of the fluid level change;
a wireless interface configured to transmit, to a receiver, the output signal from the signal processor; and
a power supply configured to power the detecting component and the wireless interface,
a conduit for providinq fluid to the body portion;
the detecting component further comprising a controller configured to:
intermittently cause power to be transmitted into the body portion and set a rate of activation of the detecting component, wherein activation of the detecting component causes power to be transmitted into the body portion, the rate of activation being optimized between power consumption and a prudent rate of monitoring for the fluid level change, wherein the prudent rate of monitoring relates to a fluid injection rate and an unacceptable volume of accidentally injected fluid;
a substrate supporting the detecting component, the signal processor, the wireless interface, and the conduit.