DIGITAL ELECTRONIC FETAL HEART RATE AND UTERINE CONTRACTION MONITORING SYSTEM

摘要

A digital electronic fetal heart rate and uterine contraction monitoring system with an electronic fetal monitor, a contraction monitoring sensor and a fetal heart rate sensor. A controller configured to receive fetal heart rate data and uterine contraction pressure, identify a contraction start time and end time, and calculate each rest interval in seconds between contractions. The system compares rest intervals to a safe preset limit for rest intervals, calculates a median rest interval and an average rest interval for each fifteen-minute period of labor, and presents a contraction and rest interval graph to a display. The system can activate an alarm on an electronic fetal monitor display or a third party display and can pause a pump that is delivering a drug to increase uterine contractions when a significant criteria of excessive uterine activity is detected outside preset limits to assure adequate blood flow to the fetal brain.

主权项

1. A digital electronic fetal heart rate and uterine contraction monitoring system comprising:
a. an electronic fetal monitor with an electronic fetal monitor processor, an electronic fetal monitor data storage, and an electronic fetal monitor display connected to the electronic fetal monitor processor, wherein the electronic fetal monitor processor is in further communication with a network; b. a contraction monitoring sensor recording contraction pressure versus time data, wherein the contraction monitoring sensor is secured to a mother and in communication with the electronic fetal monitor; c. a fetal heart rate sensor recording fetal heart rate versus time data from a fetus, wherein the fetal heart rate sensor is in communication with the electronic fetal monitor; d. a maternal heart rate sensor for recording maternal heart rate versus time data from the mother, wherein the maternal heart rate sensor is in communication with the electronic fetal monitor; and e. a controller comprising a controller processor and a controller data storage connected to the fetal heart rate sensor and the maternal heart rate sensor, the controller data storage comprising:
(i) computer instructions configured to instruct the controller processor to record the fetal heart rate versus time data from the fetal heart rate sensor and display a fetal heart rate tracing;(ii) computer instructions configured to instruct the controller processor to record the maternal heart rate versus time data from the maternal heart rate sensor and display a maternal heart rate tracing;(iii) computer instructions configured to instruct the controller processor to receive and store the fetal heart rate versus time data, the maternal heart rate versus time data, and the contraction pressure versus time data at a user selected sampling rate;(iv) computer instructions configured to instruct the controller processor to detect, calculate and store an average contraction onset time, an average contraction offset time, an average contraction onset pressure, and an average contraction offset pressure utilizing at least one of: a neural network model for contraction onset and contraction offset, a duration percentage max model for contraction onset and contraction offset, a contraction slope model for contraction onset and contraction offset, and a user adjustable minimum pressure model that evaluates only a portion of each contraction above a user adjustable minimum pressure for each contraction;(v) computer instructions configured to instruct the controller processor to detect and store an active pressure of each detected contraction by subtracting an average uterine resting tone pressure from a contraction peak pressure;(vi) computer instructions configured to instruct the controller processor to simultaneously compute, store, and display each measure of the duration of each resting interval in seconds utilizing a stored average contraction onset time data and a stored average contraction offset time data both graphically and numerically;(vii) computer instructions configured to instruct the controller processor to calculate and display a graph of an average rest interval duration for at least one fifteen-minute period of labor and a minimum normal rest interval for the same fifteen-minute period of labor;(viii) computer instructions configured to instruct the controller processor to present a rest interval spectrum graph to depict a quantity of rest intervals occurring in a plurality of risk categories from low risk to high risk during the at least one fifteen-minute period of labor;(ix) computer instructions to transmit data and the graph depicting the average rest interval duration and the rest interval spectrum graph to a client device via the network; and(x) computer instructions configured to instruct the controller processor to communicate with a pump infusing a labor inducing drug to the mother to pause or decrease labor inducing chemicals automatically when the controller processor detects resting intervals below a safe preset limit for the average rest interval duration, and wherein the digital electronic fetal heart rate and uterine contraction monitoring system protects a fetal brain automatically and without human intervention by pausing the pump or decreasing a pump flow for the pump that delivers the labor inducing drug to the mother that increases contractions.