Portable Oxygen Delivery Device
Disclosed are devices, systems, and methods, including an oxygen delivery device that includes an oxygen delivery module to produce at least concentrated oxygen, a gas moving device to deliver air to the oxygen delivery module, at least one motor to controllably drive the gas moving device, an energy source to power at least the at least one motor, a pressure sensor to determine a pressure level, and a purity sensor to determine oxygen purity value. The device also includes a controller to control, based on the oxygen purity value and the pressure level, at least the gas moving device's operations and the oxygen delivery module's operations to cause the pressure resulting from gas moving device to be substantially at a pre-determined pressure value and to cause the purity level of the oxygen produced by the oxygen delivery module to be substantially at a pre-determined purity value.
1 . An oxygen delivery device comprising:
an oxygen delivery module to produce at least concentrated oxygen at a controllable purity level from ambient air;
a gas moving device to deliver the ambient air to the oxygen delivery module;
at least one controllable motor to controllably drive the gas moving device;
an energy source to power at least the at least one controllable motor;
a pressure sensor to determine a pressure level produced in the oxygen delivery device;
a purity sensor to determine oxygen purity value produced by the oxygen delivery module; and
a controller to control based on the determined oxygen purity value and the pressure level, at least the gas moving device's operations and the oxygen delivery module's operations so as to cause the pressure resulting from the operation of the gas moving device to be substantially at a pre-determined pressure value and to cause the purity level of the oxygen produced by the oxygen delivery module to be substantially at a pre-determined purity value.
2 . The oxygen delivery device of claim 1 , wherein the oxygen delivery module comprises one or more of: pressure swing adsorption system, vacuum-pressure swing adsorption system, liquid oxygen storage system, and a high pressure gaseous oxygen system.
3 . The oxygen delivery device of claim 1 , wherein the pre-determined pressure value corresponds to a minimum acceptable pressure level, and the pre-determined purity value corresponds to a minimum acceptable oxygen purity level such that energy consumption of the system is reduced.
4 . The oxygen delivery device of claim 3 , wherein the minimum acceptable pressure level is between approximately 3-7 psig pressure, and wherein the minimum acceptable oxygen is between approximately 82-93% oxygen.
5 . The oxygen delivery device of claim 1 , wherein the controller is configured to cause the pressure resulting from the operation of the gas moving device to be substantially at the pre-determined pressure value and to cause the purity level of the oxygen produced by the oxygen delivery module to be substantially at the pre-determined purity value in response to a determination that an energy source to power the oxygen delivery device is a battery.
6 . The oxygen delivery device of claim 5 , wherein the battery is a rechargeable battery.
7 . The oxygen delivery device of claim 1 , wherein the oxygen delivery module comprises:
a plurality of adsorption beds; and
a valve assembly configured to direct gas to the plurality of adsorption beds to provide valving action for selectively transferring fluids through the plurality of adsorption beds to separate concentrated oxygen gas from the ambient air.
8 . The oxygen delivery device of claim 1 , wherein the gas delivery device is configured to convert a flow of gas from a first pressure to a second pressure, the gas delivery device including one or more of: a compressor, and a vacuum pump.
9 . The oxygen delivery device of claim 1 , further comprising:
a device interface module configured to interface with one or more additional devices to enable interoperability functionality of the oxygen delivery device with the one or more additional devices, the interoperability functionality includes one or more of: directing power from a power source of the oxygen delivery device to the one or more additional devices, and communicating data between the oxygen delivery device and the one or more additional devices.
10 . The oxygen delivery device of claim 1 , further comprising:
a coupler coupled to the purity sensor, the coupler including an inlet port to receive gas from an external source;
wherein the controller is further configured to:
receive data from the purity sensor measuring the purity of oxygen delivered from an external oxygen source, the oxygen from the external oxygen source having a known oxygen purity level;
calibrate the purity sensor based on the purity value measured by the purity sensor for the oxygen having the known oxygen purity level delivered from the external oxygen source.
11 . A method comprising:
receiving from a purity sensor data representative of oxygen purity value in an oxygen delivery module;
receiving from a pressure sensor a pressure level value produced by a gas moving device configured to draw air into the oxygen delivery module; and
controlling at least one of the gas moving device's operations and the oxygen delivery module's operations based on the received oxygen purity value and the received pressure level value to cause the pressure resulting from the operation of the gas moving device to be substantially at a pre-determined pressure value and to cause the purity level of the oxygen produced by the oxygen delivery module to be substantially at a pre-determined purity value.
12 . The method of claim 11 , wherein controlling the at least the gas moving device's operations and the oxygen delivery module's operations comprises:
controlling a motor configured to drive the gas moving device.
13 . The method of claim 11 , wherein controlling the at least the gas moving device's operations and the oxygen delivery module's operations comprises:
determining energy source used to power the oxygen delivery module and the gas moving device; and
causing the pressure resulting from the operation of the gas moving device to be substantially at the pre-determined pressure value and causing the purity level of the oxygen produced by the oxygen delivery module to be substantially at the pre-determined purity value in response to a determination that the energy source is a battery.
14 . A oxygen delivery device comprising:
an oxygen delivery module to produce at least concentrated oxygen;
a controller configured to control the oxygen delivery module to cause the oxygen delivery module to deliver oxygen to a patient based on a patient's tidal volume data representative of the normal volume of air displaced between inspiration and expiration by the patient, and further based on a fraction of inspired oxygen (FiO2) value required for the patient.
15 . The oxygen delivery device of claim 14 , wherein the oxygen delivery module comprises one or more of: pressure swing adsorption system, vacuum-pressure swing adsorption system, a vacuum swing adsorption system, and a membrane separation device.
16 . The oxygen delivery device of claim 14 , wherein the controller is further configured to:
determine operating conditions for the oxygen delivery device based on the patient's tidal volume and the required FiO2, and further based on one or more of: respiratory rate for the patient, oxygen purity value of the oxygen delivered to the patient, and Inspiration:Expiration (I:E) ratio.
17 . The oxygen delivery device of claim 16 , wherein the operating conditions include one or more of: speed of the gas moving device providing an air flow to the oxygen delivery module, oxygen delivery module cycle speed, and desired oxygen purity level to be produced by the oxygen delivery device.
18 . The oxygen delivery device of claim 16 , wherein the controller configured to determine operating conditions is configured to determine optimal operating conditions that would result in reduced energy consumption for the system.
19 . The oxygen delivery device of claim 14 , further comprising one or more of:
a pressure sensor to determine a pressure level produced by oxygen delivery device, a gas moving device providing an air flow to the oxygen delivery module, and a purity sensor to determine oxygen purity value produced by the oxygen delivery device.
20 . A method comprising:
receiving data representative of at least a patient's tidal volume data indicative of normal volume of air displaced between inspiration and expiration by the patient, and data representative of a fraction of inspired oxygen (FiO2) value required for the patient; and
controlling an oxygen delivery module producing at least concentrated oxygen to cause the oxygen delivery module to deliver oxygen to the patient based at least on the patient's tidal volume data and the FiO2 value.