Trachea pressure determination method and device

摘要

According to various embodiments, methods and systems for determining pressure in the lungs may employ intracuff pressure measurements. The intracuff pressure measurements may calibrated or adjusted based on a set of calibration coefficients or a set of calibration curves, which may reflect patient parameters and cuff/tube geometry factors. The resulting calibration may be used to determine a more accurate estimate of lung pressure, which in turn may be used to control a ventilator and provide breathing assistance to a patient. Also provided are tracheal tubes with couplers or other memory devices for storing calibration information. Such tubes may allow calibration at the level of an individual tracheal tube to account for changes in tube geometry and individual patient factors.

主权项

1. A monitor for determining trachea pressure comprising:
a memory storing instructions configured to: determine a monitored cuff pressure in an inflated cuff of a tracheal tube disposed in the trachea of a subject; select a relationship from a plurality of relationships between the monitored cuff pressure and the trachea pressure; determine the trachea pressure based upon the selected relationship; determine a lung pressure from the tracheal pressure and an offset, wherein the offset is a reference cuff pressure; and a processor configured to execute the instructions.