Systems And Methods For Controlling An Amount Of Oxygen In Blood Of A Ventilator Patient
First Claim
Patent Images
1. A method for controlling an amount of oxygen in blood in a patient being ventilated by a medical ventilator, the method comprising:
- monitoring an amount of oxygen in blood in a patient during ventilation on the medical ventilator;
monitoring privileged ventilator information, the privileged ventilator information is flow rate, compliance of patient circuit, and minute volume; and
controlling at least one of a specific oxygen percentage in a gas mixture supplied by the ventilator to the patient and a gas flow rate of the gas mixture supplied by the ventilator to the patient during ventilation based on the monitored amount of oxygen in the blood in the patient and the monitored privileged ventilator information.
2 Assignments
0 Petitions
Accused Products
Abstract
This disclosure describes systems and methods for controlling blood oxygen saturation (SpO2) or partial pressure of oxygen in arterial blood (PaO2) of a patient being ventilated by a medical ventilator. The disclosure describes a novel approach of utilizing dynamic, real-time ventilator information in a closed-loop controller to determine the necessary FiO2 and flow commands for the medical ventilator.
-
Citations
22 Claims
-
1. A method for controlling an amount of oxygen in blood in a patient being ventilated by a medical ventilator, the method comprising:
-
monitoring an amount of oxygen in blood in a patient during ventilation on the medical ventilator; monitoring privileged ventilator information, the privileged ventilator information is flow rate, compliance of patient circuit, and minute volume; and controlling at least one of a specific oxygen percentage in a gas mixture supplied by the ventilator to the patient and a gas flow rate of the gas mixture supplied by the ventilator to the patient during ventilation based on the monitored amount of oxygen in the blood in the patient and the monitored privileged ventilator information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A medical ventilator system comprising:
-
a processor; a patient circuit; an oximeter connected to a patient being ventilated by the medical ventilation system and controlled by the processor, the oximeter is adapted to monitor a blood oxygen saturation level of the patient during ventilation by the medical ventilator system; and an SpO2 controller in communication with the processor and the oximeter and adapted receive the monitored blood oxygen saturation level from the oximeter, adapted to receive privileged ventilator information from the processor, and adapted to control at least one of a specific oxygen percentage and a flow rate of a gas mixture supplied to the patient during ventilation by the medical ventilator system based on the monitored blood oxygen saturation level of the patient and the privileged ventilator information, wherein the privileged ventilator information is flow rate, compliance of a patient circuit, minute volume, and ideal body weight. - View Dependent Claims (14, 15, 16)
-
-
17. A method for controlling an amount of oxygen in blood in a patient being ventilated by a medical ventilator, the method comprising:
-
monitoring an amount of oxygen in blood in a patient during ventilation on the medical ventilator; monitoring privileged ventilator information, the privileged ventilator information is flow rate, compliance of patient circuit, and minute volume; detecting apnea in the patient based on the monitored amount of oxygen in the blood in the patient and the monitored privileged ventilator information; and sending a few small breaths through the ventilator circuit to stimulate breathing in the patient. - View Dependent Claims (18, 19)
-
-
20. A medical ventilator system comprising:
-
a processor; a patient circuit; a blood gas monitor connected to a patient being ventilated by a medical ventilator system and controlled by the processor, the blood gas monitor is adapted to monitor a partial pressure of oxygen in the patient during ventilation by the medical ventilator system; and a PaO2 controller in communication with the processor and the blood gas monitor and adapted to receive the monitored partial pressure of oxygen in the patient from the blood gas monitor, adapted to receive privileged ventilator information from the processor, and adapted to control at least one of a specific oxygen percentage and a flow rate of a gas mixture supplied to the patient during ventilation by the medical ventilator system based on the monitored partial pressure of oxygen in the patient and the privileged ventilator information, wherein the privileged ventilator information is flow rate, compliance of a patient circuit, minute volume, and ideal body weight.
-
-
21. A computer-readable medium having computer-executable instructions for performing a method for controlling an amount of oxygen in blood in a patient being ventilated by a medical ventilator, the method comprising:
-
repeatedly monitoring an amount of oxygen in blood in a patient during ventilation on a medical ventilator; repeatedly monitoring privileged ventilator information, the ventilator privileged information comprises flow rate, compliance of a patient circuit, and minute volume; determining that a change in at least one of an oxygen percentage or flow rate is necessary based on the monitored amount of oxygen in the blood in the patient and the monitored privileged ventilator information; and adjusting at least one of the oxygen percentage in a gas mixture and the gas flow rate of the gas mixture supplied by the ventilator to the patient during ventilation based on the monitored amount of oxygen in the blood in the patient and the monitored privileged ventilator information.
-
-
22. A medical ventilator system, comprising:
-
means for repeatedly monitoring oxygen saturation level of blood in a patient during ventilation on the medical ventilator; means for repeatedly monitoring privileged ventilator information, wherein the privileged ventilator information comprises flow rate, compliance of a patient circuit, minute volume, and ideal body weight; means for determining if a change in at least one of an oxygen percentage or flow rate is necessary based on the monitored oxygen saturation level of the blood of the patient and the monitored privileged ventilator information; and means for adjusting at least one of the oxygen percentage in a gas mixture and the gas flow rate of the gas mixture supplied by the ventilator to the patient during ventilation based on the monitored oxygen saturation level of the blood of the patient and the monitored privileged ventilator information.
-
Specification