US 2025/0049379 A1 · MYOTRACE CONTINUOUS MONITORING SCENARIOS

Abstract

A non-invasive system for monitoring neural respiratory drive (NRD) in addition to other patient metrics typically monitored non-invasively utilizes continuous parasternal EMG signal measurements and can be integrated into early warning scoring systems (EWS) used to perform spot checks of patients in general hospital wards. Using the assessment of a pulmonologist as the gold standard for determination of respiratory status, the disclosed system assesses a patient's respiratory status significantly more accurately than EWS systems that only use parameters such as respiration rate, since NRD determinations provide an objective quantification of the effort that it takes for a patient to breathe. In particular, the NRD determination system takes EMG measurements of the upper chest inspiratory muscles during either or both regular breathing inhalation and maximum effort sniff activity, as EMG measurements taken during inhalation are considered to be indicators of the balance between respiratory muscle load and respiratory muscle capacity.

Claims15

Dependent claims

A wearable sensor patch for use with a patient monitoring system, the sensor patch comprising:

a number of EMG signal electrodes;
and
an EMG reference electrode,
wherein the sensor patch is structured to be affixed to a torso of a patient,
wherein the sensor patch is structured to automatically and non-invasively sense respiratory muscle activity signals used to calculate a neural respiratory drive index, and to automatically and non-invasively sense at least one additional physiological signal other than respiratory muscle activity, and
wherein the sensor patch is configured to be in electrical communication with a power supply and processing means.

3 more elements

A patient monitoring system for monitoring a health status of a patient, the monitoring system comprising:

a wearable sensor patch, the sensor patch comprising:
a number of EMG signal electrodes;
an EMG reference electrode;
and
an accelerometer;
a controller in electrical communication with the sensor patch;
and
a user interface in electrical communication with the controller;
wherein the sensor patch is structured to be affixed to the torso of the patient, wherein the sensor patch is structured to non-invasively sense respiratory muscle activity signals and to sense at least one additional physiological signal other than respiratory muscle activity, and to monitor a plurality of metrics based on the sensed respiratory muscle activity signals and at least one additional physiological signal,
wherein the controller is configured to determine whether or not the patient is in a resting state and whether or not the patient is asleep based on data sensed by the accelerometer and on the plurality of metrics,
wherein the controller is configured to calculate a neural respiratory drive index based on the sensed respiratory muscle activity signals,
wherein the controller is configured to produce a number of health metric scores indicative of a health status of the patient based on the plurality of metrics,
wherein the user interface is configured to display the number of health metric scores.

10 more elements

A method for monitoring a health status of a patient, the method comprising:

positioning a sensor patch comprising a number of EMG electrodes and a number of non-EMG sensors including an accelerometer on the torso of the patient, the sensor patch being in electrical communication with a controller;
setting the controller to operate in a selected mode of operation, the selected mode of operation comprising either a trigger mode or a continuous mode;
sensing respiratory muscle activity signals and at least one other physiological signal with the sensor patch;
calculating a neural respiratory drive index based on the sensed respiratory muscle activity signals with a controller;
determining a number of health metric scores based on the neural respiratory drive index and the at least one other physiological signal with the controller;
and
displaying the number of health metric scores on a user interface in electrical communication with the controller,
wherein the controller is configured to calculate the neural respiratory drive index as either a relative index based on both sniff and regular breathing activity or as an absolute index based only on regular breathing activity.

5 more elements

Dependencies are inferred from the claim text.

Myotrace continuous monitoring scenarios

Life of this patent

Myotrace continuous monitoring scenarios

Life of this patent

Abstract

Claims15