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1. (WO2018053461) SYSTEM AND METHOD OF MONITORING DISLODGEMENT OF VENOUS NEEDLES IN DIALYSIS PATIENTS

Pub. No.:    WO/2018/053461    International Application No.:    PCT/US2017/052146
Publication Date: Fri Mar 23 00:59:59 CET 2018 International Filing Date: Wed Sep 20 01:59:59 CEST 2017
IPC: A61M 1/36
A61M 1/16
Applicants: HENRY FORD HEALTH SYSTEM
Inventors: FRINAK, Stanley
ZASUWA, Gerard
YEE, Jerry
BESARAB, Anatole
Title: SYSTEM AND METHOD OF MONITORING DISLODGEMENT OF VENOUS NEEDLES IN DIALYSIS PATIENTS
Abstract:
A method and a system are provided for detecting a condition indicative of a dislodged needle in a hemodialysis procedure. A venous return pressure for a patient undergoing dialysis is measured. The venous return pressure is analyzed via a controller, and an intravascular blood pressure in proximity to a location of needle insertion into the patient is derived. A lower limit is calculated as a function of the intravascular blood pressure via the controller. An average of the venous return pressure is calculated via the controller during a predetermined time window. The average is compared to the lower limit via the controller, and if the average is within a specified range of the lower limit, the controller determines that a condition indicative of a dislodged needle is present.