Portable Oxygen Concentrator System and Method Including Concentrated Oxygen Flow Delivery

• US 20090107500A1
• Filed: 10/16/2008
• Published: 04/30/2009
• Est. Priority Date: 10/25/2007
• Status: Abandoned Application

• Current Assignee: Chart Sequal Technologies Incorporated (Niterra Co., Ltd.)
• Original Assignee: Sequal Technologies Incorporated (Niterra Co., Ltd.)
• Inventors: Edwards, Paul Laroy
• Application Number:
  US12/252,485
• Publication Number:
  US 20090107500A1
• Time in Patent Office: Days
• US Class Current: 128/204.230
• CPC Class Codes: A61M 16/0672 Nasal cannula assemblies for oxygen therapy
• CPC Class Codes: A61M 16/0677 Gas-saving devices therefor
• CPC Class Codes: A61M 16/10 Preparation of respiratory gases or vapours
• CPC Class Codes: A61M 16/101 using an oxygen concentrator
• CPC Class Codes: A61M 16/107 in the inspiratory path
• CPC Class Codes: A61M 16/16 Devices to humidify the respiration air A61M16/1045 takes precedence
• CPC Class Codes: A61M 16/161 with means for measuring the humidity
• CPC Class Codes: A61M 16/204 used for inhalation control
• CPC Class Codes: A61M 2016/0024 with an on-off output signal, e.g. from a switch
• CPC Class Codes: A61M 2016/003 with a flowmeter
• CPC Class Codes: A61M 2016/0039 in the inspiratory circuit
• CPC Class Codes: A61M 2016/1025 the O2 concentration
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/3331 Pressure; Flow
• CPC Class Codes: A61M 2205/3358 Measuring barometric pressure, e.g. for compensation
• CPC Class Codes: A61M 2205/3368 Temperature
• CPC Class Codes: A61M 2205/3375 Acoustical, e.g. ultrasonic, measuring means
• CPC Class Codes: A61M 2205/3561 local, e.g. within room or hospital
• CPC Class Codes: A61M 2205/3584 using modem, internet or bluetooth
• CPC Class Codes: A61M 2205/50 with microprocessors or computers
• CPC Class Codes: A61M 2205/52 : with memories providing a history of measured variating parameters of apparatus or patient
• CPC Class Codes: A61M 2205/8212 : with means or measures taken for minimising energy consumption
• CPC Class Codes: A61M 2205/8237 : Charging means
• CPC Class Codes: A61M 2209/06 : Packaging for specific medical equipment
• CPC Class Codes: A61M 2230/04 : Heartbeat characteristics, e.g. ECG, blood pressure modulation
• CPC Class Codes: A61M 2230/06 : Heartbeat rate only
• CPC Class Codes: A61M 2230/205 : partial oxygen pressure (P-O2)
• CPC Class Codes: A61M 2230/30 : Blood pressure A61M2230/04 takes precedence
• CPC Class Codes: A61M 2230/42 : Rate
• CPC Class Codes: A61M 2230/50 : Temperature
• CPC Class Codes: A61M 2230/63 : Motion, e.g. physical activity
• CPC Class Codes: B01D 2253/104 : Alumina
• CPC Class Codes: B01D 2253/106 : Silica or silicates
• CPC Class Codes: B01D 2253/108 : Zeolites
• CPC Class Codes: B01D 2256/12 : Oxygen
• CPC Class Codes: B01D 2257/102 : Nitrogen
• CPC Class Codes: B01D 2257/80 : Water
• CPC Class Codes: B01D 2259/40005 : using rotary valves
• CPC Class Codes: B01D 2259/40009 : using sensors or gas analysers
• CPC Class Codes: B01D 2259/4003 : with two sub-steps
• CPC Class Codes: B01D 2259/40032 : with three sub-steps
• CPC Class Codes: B01D 2259/40041 : with more than three sub-steps
• CPC Class Codes: B01D 2259/40071 : Nine
• CPC Class Codes: B01D 2259/40073 : Ten
• CPC Class Codes: B01D 2259/40081 : Counter-current
• CPC Class Codes: B01D 2259/403 : using three beds
• CPC Class Codes: B01D 2259/4061 : using five beds
• CPC Class Codes: B01D 2259/4533 : for medical purposes
• CPC Class Codes: B01D 2259/4541 : for portable use, e.g. gas masks
• CPC Class Codes: B01D 53/0446 : Means for feeding or distributing gases
• CPC Class Codes: B01D 53/047 : Pressure swing adsorption
• CPC Class Codes: B01D 53/0473 : Rapid pressure swing adsorption
• CPC Class Codes: B01D 53/0476 : Vacuum pressure swing adsorption
• CPC Class Codes: B01D 53/053 : with storage or buffer vessel
• CPC Class Codes: B01D 53/261 : by adsorption

Abstract

A portable oxygen concentrator system weighing 4-20 pounds adapted to be readily transported by a user and for delivering oxygen to lungs of the user includes a rechargeable energy source; a concentrator powered by said energy source and adapted to convert ambient air into concentrated oxygen gas for said user; and a control unit that controls the concentrator to deliver a flow rate based on at least one of a Body Temperature Pressure Dry (BTPD) condition, a Body Temperature Pressure Saturated with water (BTPS) condition, and a condition between BTPD and BTPS, where relative humidity is 0-100%, to maintain a constant fraction of inspired oxygen (FI02) in the lungs of the user.

Claims

1. A portable oxygen concentrator system adapted to be readily transported by a user and for delivering oxygen to lungs of the user, comprising:

a rechargeable energy source;

a concentrator powered by said rechargeable energy source and adapted to convert ambient air into concentrated oxygen gas for said user; and

a control unit that controls the concentrator to deliver a flow rate based on at least one of a Body Temperature Pressure Dry (BTPD) condition, a Body Temperature Pressure Saturated with water (BTPS) condition, and a condition between BTPD and BTPS, where relative humidity is 0-100%, to maintain a constant fraction of inspired oxygen (FI02) in the lungs of the user, wherein the portable oxygen concentrator system weighs 4-20 pounds.

2. The portable oxygen concentrator system of claim 1, wherein the controller controls the concentrator to deliver a flow rate based on a Body Temperature Pressure Dry (BTPD) condition.

3. The portable oxygen concentrator system of claim 1, wherein the controller controls the concentrator to deliver a flow rate based on a Body Temperature Pressure Saturated with water (BTPS) condition.

4. The portable oxygen concentrator system of claim 1, wherein the controller controls the concentrator to deliver a flow rate based on a condition between BTPD and BTPS, where relative humidity is 0-100%.

5. The portable oxygen concentrator system of claim 1, wherein the concentrator is at least one of a continuous flow concentrator, a pulse flow concentrator, and a combination continuous flow and pulse flow concentrator.

6. The portable oxygen concentrator system of claim 1, wherein the portable oxygen concentrator system includes one or more sensors for sensing one or more conditions and the control unit controls the concentrator based on the one or more sensed conditions to deliver a flow rate based on at least one of a BTPD condition, a BTPS condition, and a condition between BTPD and BTPS, where relative humidity is 0-100%, to maintain a constant fraction of inspired oxygen (FI02) in the lungs of the user.

7. The portable oxygen concentrator system of claim 1, wherein the concentrator includes a plurality of adsorption beds and a rotating valve assembly to provide rotatable valving action for selectively transferring fluids through the plurality of adsorption beds for converting ambient air into concentrated oxygen gas for said user.

8. The portable oxygen concentrator system of claim 1, wherein the concentrator is a vacuum pressure swing adsorption “

VPSA”

oxygen concentrator, the compressor is adapted to compress and supply ambient air to said VPSA oxygen concentrator and said VPSA oxygen concentrator is adapted to separate concentrated gaseous oxygen from the supplied ambient air; and

the concentrator includes a vacuum generator to draw exhaust gas from the VPSA oxygen concentrator to improve the recovery and productivity of the VPSA oxygen concentrator.

9. A method of delivering a constant fraction of inspired oxygen (FI02) to lungs of a user with a portable oxygen concentrator system weighing 4-20 pounds, comprising:

sensing one or more conditions;

based on the one or more sensed conditions delivering a flow rate based on at least one of a Body Temperature Pressure Dry (BTPD) condition, a Body Temperature Pressure Saturated with water (BTPS) condition, and a condition between BTPD and BTPS, where relative humidity is 0-100%, to maintain a constant fraction of inspired oxygen (FI02) in the lungs of the user.

10. The method of claim 9, wherein delivering a flow rate based includes delivering a flow rate based on a Body Temperature Pressure Dry (BTPD) condition.

11. The method of claim 9, wherein delivering a flow rate based includes delivering a flow rate based on a Body Temperature Pressure Saturated with water (BTPS) condition.

12. The method of claim 9, wherein delivering a flow rate based includes delivering a flow rate based on a condition between BTPD and BTPS, where relative humidity is 0-100%.

13. The method of claim 9, wherein the concentrator is at least one of a continuous flow concentrator, a pulse flow concentrator, and a combination continuous flow and pulse flow concentrator.

14. The method of claim 9, wherein the concentrator includes a plurality of adsorption beds and a rotating valve assembly to provide rotatable valving action for selectively transferring fluids through the plurality of adsorption beds for converting ambient air into concentrated oxygen gas for said user.

15. The method of claim 9, wherein the concentrator is a vacuum pressure swing adsorption “

VPSA”

oxygen concentrator, the compressor is adapted to compress and supply ambient air to said VPSA oxygen concentrator and said VPSA oxygen concentrator is adapted to separate concentrated gaseous oxygen from the supplied ambient air; and

the concentrator includes a vacuum generator to draw exhaust gas from the VPSA oxygen concentrator to improve the recovery and productivity of the VPSA oxygen concentrator.