GRAPHICAL MAPPING SYSTEM FOR CONTINUOUSLY MONITORING A PATIENT'S VITAL SIGNS, MOTION, AND LOCATION

摘要

The invention provides a body-worn monitor that measures a patient's vital signs (e.g. blood pressure, SpO2, heart rate, respiratory rate, and temperature) while simultaneously characterizing their activity state (e.g. resting, walking, convulsing, falling). The body-worn monitor processes this information to minimize corruption of the vital signs by motion-related artifacts. A software framework generates alarms/alerts based on threshold values that are either preset or determined in real time. The framework additionally includes a series of ‘heuristic’ rules that take the patient's activity state and motion into account, and process the vital signs accordingly. These rules, for example, indicate that a walking patient is likely breathing and has a regular heart rate, even if their motion-corrupted vital signs suggest otherwise.

主权项

1. A system for continuously monitoring a plurality of patients, the system comprising:
a patient monitor configured to be worn on the body of each of the plurality of patients, each patient monitor comprising:
a first sensor comprising a first detector configured to detect a first time-dependent physiological waveform indicative of one or more contractile properties of the patient's heart;a second sensor comprising a second detector configured to detect a second time-dependent physiological waveform indicative of one or more contractile properties of the patient's heart;at least two motion-detecting sensors positioned on locations selected from a forearm, upper arm, and a body location other than the forearm or upper arm of the patient, each of the motion-detecting sensors generating at least one motion waveform indicative of motion of a body location onto which the motion-detecting sensor is affixed;a location sensor comprising a wireless component and a location processing component, the location processing component configured to receive a signal from the wireless component and process this signal to determine a physical location of the patient to which the location sensor is attached;a processing component configured to receive the time-dependent physiological and motion waveforms and determine therefrom: (i) at least one vital sign calculated using at least one of the first and second time-dependent physiological waveforms; (ii) at least one motion parameter selected from the patient's posture, activity state, and degree of motion calculated using at least one motion waveform generated by each of the motion-detecting sensors; and (iii) an alarm parameter calculated from the at least one of the vital sign and motion parameter; and,a wireless transceiver configured to wirelessly transmit the vital sign, motion parameter, location of the patient, and alarm parameter through a wireless system; and,a remote computer system comprising a display and an interface to the wireless system, the interface configured to receive from the wireless system a vital sign, motion parameter, location of the patient, and alarm parameter corresponding to each of the plurality of patients comprising a patient monitor, and the display configured to render a user interface that describes at least one of a vital sign, motion parameter, location of the patient, and alarm parameter for each patient of the plurality of patients comprising a patient monitor.