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Servo-Controlled Blood Vessel Occluder. Ahmed El-Gawish, Alan Chen, Hugo Loo, & Imad Mohammad Advisor: Ki Chon. Motivation. Renal autoregulation keeps blood pressure stable in the renal system MYO and TFG mediate renal autoregulation
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Servo-Controlled Blood Vessel Occluder Ahmed El-Gawish, Alan Chen, Hugo Loo, & Imad Mohammad Advisor: Ki Chon
Motivation • Renal autoregulation keeps blood pressure stable in the renal system • MYO and TFG mediate renal autoregulation • Measure effect of drugs and hypertension on MYO and TGF in mediation of renal autoregulation
The Device • Manual occluders exist, but . . . they must be controlled by hand! • It will consist of sensors, an occluder, and the controller • The controller allows you to automate the process, giving a fast reaction time
The Device (cont’d) • Sensors detect the blood pressure in the femoral artery • Motor controls occluder to increase or decrease blood flow by controlling flow of medium through occluder • Controller determines amount of air to inject and when to release it based on settings provided by the user
Occluder • Deflated Inflated The ring is injected with air, water or saline to constrict the inside lumen.
Proportional Integral Differential Controller • temperature, motion, flow controllers • available in analog and digital forms • It helps get your output (velocity, temperature, position) where you want it.
