CA2426685A1 - Apparatus and process for supplying oxygen-enriched gas - Google Patents

Apparatus and process for supplying oxygen-enriched gas Download PDF

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Publication number
CA2426685A1
CA2426685A1 CA002426685A CA2426685A CA2426685A1 CA 2426685 A1 CA2426685 A1 CA 2426685A1 CA 002426685 A CA002426685 A CA 002426685A CA 2426685 A CA2426685 A CA 2426685A CA 2426685 A1 CA2426685 A1 CA 2426685A1
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CA
Canada
Prior art keywords
oxygen
enriched gas
radial compressor
flow line
high pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002426685A
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French (fr)
Other versions
CA2426685C (en
Inventor
Joseph B. Ii Richey
Gerold G. Goertzen
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Invacare Corp
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Individual
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=32398227&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2426685(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from US09/695,612 external-priority patent/US7204249B1/en
Application filed by Individual filed Critical Individual
Publication of CA2426685A1 publication Critical patent/CA2426685A1/en
Application granted granted Critical
Publication of CA2426685C publication Critical patent/CA2426685C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B7/00—Respiratory apparatus
    • A62B7/14—Respiratory apparatus for high-altitude aircraft
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/1005—Preparation of respiratory gases or vapours with O2 features or with parameter measurement
    • A61M16/101—Preparation of respiratory gases or vapours with O2 features or with parameter measurement using an oxygen concentrator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B25/00—Multi-stage pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B25/00—Multi-stage pumps
    • F04B25/02—Multi-stage pumps of stepped piston type
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/1005—Preparation of respiratory gases or vapours with O2 features or with parameter measurement
    • A61M2016/102—Measuring a parameter of the content of the delivered gas
    • A61M2016/1025—Measuring a parameter of the content of the delivered gas the O2 concentration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2256/00—Main component in the product gas stream after treatment
    • B01D2256/12—Oxygen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4533—Gas separation or purification devices adapted for specific applications for medical purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4541—Gas separation or purification devices adapted for specific applications for portable use, e.g. gas masks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • B01D53/0446—Means for feeding or distributing gases

Abstract

An apparatus and process for supplying low pressure oxygen-enriched gas to a patient and at a moderate pressure to a radial compressor, whereupon it is compressed and fed to a high pressure storage tank. The oxygen-enriched gas is prioritized so that it is continuously supplied via a patient flow line to the patient.

Claims (44)

1. An apparatus for supplying oxygen-enriched gas to a patient and to a high pressure storage tank, comprising:
a first compressor which receives ambient air;
an oxygen concentrator which produces oxygen enriched gas, said oxygen concentrator having an inlet which receives air from said first compressor and an outlet which provides oxygen enriched gas to a product storage tank;
a first outlet flow line which operatively delivers said oxygen enriched gas from said product tank to a patient, said flow line having a pressure from about 3 to about 10 psi;
a second outlet flow line which operatively delivers said oxygen enriched gas from said product tank to a buffer tank at a pressure from about 12 to about 22 psi, said buffer tank operatively connected by a flow line to a radial compressor, said radial compressor being capable of compressing said oxygen enriched gas and transferring the oxygen enriched gas to a high pressure storage tank, and a prioritizing apparatus which terminates the operation of said radial compressor when the oxygen concentration of said oxygen enriched gas operatively delivered to said radial compressor falls below a predetermined value so that said oxygen enriched gas is continuously supplied to the patient.
2. An apparatus according to claim 1, wherein the amount of said oxygen in said patient flow line is at least 80% by volume.
3. An apparatus according to claim 2, wherein said radial compressor includes at least two piston cylinder assemblies radially arranged around a crank shaft, and said piston cylinder assemblies adapted to sequentially compress said oxygen-enriched gas from said first piston assembly through said last piston assembly.
4. An apparatus according to claim 3, wherein said prioritization includes a determination of said oxygen-enriched gas operatively delivered to said radial compressor by an oxygen sensor and the operation of said radial compressor being terminated when said sensed oxygen-enriched gas is below a predetermined oxygen level, and wherein said patient oxygen-enriched gas and said high pressure storage tank has an oxygen concentration of at least 90% by volume.
5. An apparatus according to claim 4, wherein said radial compressor is operated by a power source other than said oxygen-enriched gas from said oxygen concentrator.
6. An apparatus for supplying oxygen-enriched gas to a patient and to a high pressure storage tank, comprising:
a low pressure, oxygen-enriched gas patient flow line for use by a patient;
a separate moderate pressure, oxygen-enriched gas buffer flow line operatively connected to a buffer tank; said moderate pressure beig greater than said low pressure;
said patient flow line and said buffer tank flow line being prioritized so as to continuously supply said oxygen-enriched gas for use by a patient;
a radial compressor operated by a power source other than said oxygen enriched gas, said buffer tank solely and operatively connected to said radial compressor;
said radial compressor being capable of compressing said oxygen-enriched gas to a high pressure; and a high pressure storage tank for portable storage of said high pressure oxygen-enriched gas.
7. An apparatus according to claim 6, wherein said radial compressor includes at least two piston cylinder assemblies radially arranged around a crank shaft, and said piston cylinder assemblies adapted to sequentially compress said oxygen-enriched gas from said first piston assembly through said last piston assembly.
8. An apparatus according to claim 7, wherein the amount of said oxygen in said patient flow line is at least 80% by volume, and wherein said prioritization includes a determination of the oxygen-enriched gas operatively delivered to said radial compressor by an oxygen sensor and the operation of said radial compressor being terminated when said sensed oxygen-enriched gas is below a predetermined oxygen level.
9. An apparatus according to claim 8, wherein said patient oxygen-enriched gas and said high pressure storage tank has an oxygen concentration of at least 90% by volume, and wherein said patient flow line has an oxygen-enriched gas flow rate of from about 1 to about 6 liters per minute.
10. An apparatus according to claim 9, wherein the pressure in said patient flow line is from about 3 to about 8 psi, wherein the pressure of said oxygen-enriched gas in said buffer flow line is from about 10 to about 22 psi, and wherein said high pressure storage tank is capable of storing said compressed oxygen-enriched gas at a pressure of from about 500 to about 4000 psi.
11. An apparatus according to claim 7, including an oxygen product storage tank and wherein said patient flow line and said buffer tank flow line are independently connected to said oxygen product storage tank.
12. An apparatus according to claim 6, wherein said high pressure storage tank is portable.
13. An apparatus according to claim 8, wherein said high pressure storage tank is portable.
14. An apparatus according to claim 10, wherein said high pressure storage tank is portable.
15. A process for supplying oxygen-enriched gas to a patient and to a high pressure storage tank, comprising the steps of continuously supplying low pressure oxygen-enriched gas through a patient flow line;
separately supplying a moderate pressure, oxygen-enriched gas through a buffer tank flow line to a buffer tank; said moderate pressure being greater than said low pressure;
operatively supplying said oxygen-enriched gas from said buffer tank to a radial compressor;
compressing said oxygen enriched gas in said radial compressor and feeding said compressed oxygen-enriched gas to a high pressure storage tank; and prioritizing said patient flow line and said buffer tank flow line so that said patient flow line is continuously supplied with said oxygen-enriched gas.
16. A process according to claim 15, wherein the oxygen concentration in said patient flow line and said buffer tank flow line is at least 75% by volume.
17. A process according to claim 16, wherein the pressure of said oxygen-enriched gas in said storage tank is at least 500 psi, wherein said radial compressor includes at least two piston cylinder assemblies radially arranged around a crank shaft, and said piston cylinder assemblies adapted to sequentially compress said oxygen-enriched gas from said first piston assembly through said last piston assembly.
18. A process according to claim 17, wherein the pressure of said oxygen-enriched gas in said patient flow line is from about 3 to about 10 psi and wherein the pressure of said oxygen-enriched gas in said buffer tank flow line is at a higher pressure.
19. A process according to claim 18, wherein said prioritization includes shutting off said radial compressor when said oxygen-enriched gas thereto is below a predetermined level.
20. A process according to claim 19, wherein the pressure of said oxygen-enriched gas in said high pressure storage tank is at least 1 500 psi, and wherein the oxygen concentration in said patient flow line and said buffer tank flow line is at least 90% by volume.
21. A process according to claim 15, wherein said high pressure storage tank is portable.
22. A process according to claim 17, wherein said high pressure storage tank is portable.
23. A process according to claim 18, wherein said high pressure storage tank is portable.
24. A process according to claim 20, wherein said high pressure storage tank is portable.
25. An apparatus for compressing and storing an oxygen-enriched gas, comprising:
a concentrated oxygen source having oxygen-enriched gas therein, wherein said oxygen-enriched gas contains at least about 50%
oxygen by volume;
a radial piston compressor operatively connected to said oxygen source to receive prioritized oxygen-enriched gas therefrom, said radial compressor being capable of compressing said oxygen-enriched gas to a high pressure; and a high-pressure storage container for portable storage of said high-pressure oxygen-enriched gas.
26. An apparatus according to claim 25, wherein said oxygen-enriched gas is prioritized by a portion thereof being capable of being fed to a person and a portion thereof being capable of being fed to said radial compressor, said prioritization includes a determination of a minimum oxygen concentration of said oxygen enriched gas by an oxygen sensor and the operation of said radial compressor being terminated when said enriched oxygen gas is below a predetermined oxygen level.
27. An apparatus according to claim 25, including a buffer tank, said buffer tank operatively connected to said oxygen source and to said radial compressor, wherein said oxygen-enriched gas is prioritized by a portion thereof being capable of being fed from said buffer tank to a person and a portion thereof being capable of being fed from said buffer tank to said radial compressor, said prioritization includes a determination of the oxygen concentration of said oxygen enriched gas by an oxygen sensor and the operation of said radial compressor being terminated when said enriched oxygen gas is below a predetermined oxygen level.
28. An apparatus according to claim 25, wherein said oxygen-enriched gas is prioritized by a portion being capable of being fed to a person and a portion being capable of being fed to a compressor, wherein said prioritization includes terminating the flow of said oxygen-enriched gas to said high-pressure storage container when said enriched oxygen gas is below a predetermined oxygen level.
29. An apparatus according to claim 27, wherein said radial compressor contains a plurality of cylinders each having a piston therein, wherein said pistons are radially arranged around a crankshaft, wherein said oxygen-enriched gas is sequentially compressed by each piston, and wherein each sequential cylinder has a smaller compressible area than the previous cylinder.
30. An apparatus according to claim 28, wherein said radial compressor contains a plurality of cylinders each having a piston therein, wherein said pistons are radially arranged around a crankshaft, wherein said oxygen-enriched gas is sequentially compressed by each piston, and wherein each sequential cylinder has a smaller compressible area than the previous cylinder.
31. An apparatus according to claim 27, wherein said oxygen source is an oxygen concentrator, and wherein said enriched oxygen gas is at least 85% oxygen by volume.
32. An apparatus according to claim 28, wherein said oxygen source is an oxygen concentrator, and wherein said enriched oxygen gas is at least 85% oxygen by volume.
33. An apparatus according to claim 29, wherein said oxygen source is an oxygen concentrator, and wherein said enriched oxygen gas is at least 90% oxygen by volume.
34. An apparatus according to claim 30, wherein said oxygen source is an oxygen concentrator, and wherein said enriched oxygen gas is at least 90% oxygen by volume.
35. An apparatus for compressing and storing an oxygen-enriched gas, comprising:
a buffer tank operatively connected to a concentrated oxygen source, said buffer tank capable of feeding concentrated oxygen to a person; and a radial compressor operatively connected to said buffer tank capable of receiving and compressing said concentrated oxygen.
36. An apparatus according to claim 35, wherein said radial compressor has a plurality of compression stages therein, wherein said radial compressor is capable of compressing said concentrated oxygen to a high pressure.
37. An apparatus according to claim 36, including a high-pressure storage container operatively connected to said radial compressor and capable of portable storage of said high-pressure concentrated oxygen.
38. An apparatus according to claim 37, wherein said concentrated oxygen is prioritized by a portion thereof being capable of being fed to a person and a portion of said concentrated oxygen being capable of being fed to said radial compressor, wherein said prioritization includes termination of the flow of said concentrated oxygen to said high pressure cylinder when said concentrated oxygen is below a predetermined level.
39. An apparatus according to claim 38, wherein said concentrated oxygen is at least about 90% oxygen by volume, and wherein said oxygen flow to said high pressure cylinder is terminated by said radial compressor.
40. A process for filling a high-pressure portable container with concentrated oxygen under high pressure, comprising the steps of:
providing a concentrated oxygen source of at least about 70%
oxygen by volume, transferring said concentrated oxygen to a radial compressor at an initial pressure, compressing said concentrated oxygen transferred to said compressor to a high pressure; and transferring said high pressure concentrated oxygen from said radial compressor to a portable container for subsequent use by a patient.
41. A process according to claim 40, wherein said radial compressor contains a plurality of cylinders each having a piston therein, wherein said pistons are radially arranged around a crankshaft, wherein said oxygen-enriched gas is sequentially compressed by each piston, and wherein each sequential piston compresses said concentrated oxygen to a higher pressure than the previous piston.
42. A process according to claim 41, wherein the concentration of said concentrated oxygen is at least 90% by volume, and including compressing said concentrated oxygen to a pressure of from about 500 to about 4,000 psi in said portable container.
43. A process according to claim 42, including prioritizing said concentrated oxygen by feeding a portion of said oxygen to a conduit capable of supplying said oxygen to a person and feeding a portion of said oxygen to said radial compressor.
44. A process according to claim 43, including pressurizing said concentrated oxygen to a pressure of from about 1,500 to about 3,000 psi in said portable container.
CA2426685A 1997-10-01 2001-10-24 Apparatus and process for supplying oxygen-enriched gas Expired - Fee Related CA2426685C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US08/942,063 US5988165A (en) 1997-10-01 1997-10-01 Apparatus and method for forming oxygen-enriched gas and compression thereof for high-pressure mobile storage utilization
US09/154,442 US6302107B1 (en) 1997-10-01 1998-09-16 Apparatus and method for forming oxygen-enriched gas and compression thereof for high-pressure mobile storage utilization
US09/695,612 US7204249B1 (en) 1997-10-01 2000-10-24 Oxygen conserving device utilizing a radial multi-stage compressor for high-pressure mobile storage
US09/695,612 2000-10-24
US09/952,763 2001-09-14
US09/952,763 US6805122B2 (en) 1997-10-01 2001-09-14 Oxygen conserving device utilizing a radial multi-stage compressor for high-pressure mobile storage
PCT/US2001/045433 WO2002034368A1 (en) 1997-10-01 2001-10-24 Apparatus and process for supplying oxygen-enriched gas

Publications (2)

Publication Number Publication Date
CA2426685A1 true CA2426685A1 (en) 2002-05-02
CA2426685C CA2426685C (en) 2011-09-13

Family

ID=32398227

Family Applications (2)

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CA002269555A Expired - Fee Related CA2269555C (en) 1997-10-01 1998-09-16 Apparatus and method for forming oxygen-enriched gas and compression thereof for high-pressure mobile storage utilization
CA2426685A Expired - Fee Related CA2426685C (en) 1997-10-01 2001-10-24 Apparatus and process for supplying oxygen-enriched gas

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA002269555A Expired - Fee Related CA2269555C (en) 1997-10-01 1998-09-16 Apparatus and method for forming oxygen-enriched gas and compression thereof for high-pressure mobile storage utilization

Country Status (6)

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US (7) US5988165A (en)
EP (2) EP0948385B1 (en)
AU (2) AU715855B2 (en)
CA (2) CA2269555C (en)
DE (1) DE69819469T2 (en)
WO (3) WO1999016529A2 (en)

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US20120152248A1 (en) 2012-06-21
US7294170B2 (en) 2007-11-13
AU1800302A (en) 2002-05-06
US8123497B2 (en) 2012-02-28
CA2269555C (en) 2004-10-05
US6923180B2 (en) 2005-08-02
US20080118373A1 (en) 2008-05-22
US20060000474A1 (en) 2006-01-05
WO1999016529A2 (en) 1999-04-08
US20020014237A1 (en) 2002-02-07
DE69819469D1 (en) 2003-12-11
WO2002034368A1 (en) 2002-05-02
EP1345670B1 (en) 2007-01-03
US6805122B2 (en) 2004-10-19
US6302107B1 (en) 2001-10-16
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DE69819469T2 (en) 2004-05-13
WO2003024569A1 (en) 2003-03-27
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US5988165A (en) 1999-11-23
US20040103895A1 (en) 2004-06-03
AU9488098A (en) 1999-04-23
CA2426685C (en) 2011-09-13
WO1999016529A3 (en) 1999-06-24
EP1345670A1 (en) 2003-09-24
EP0948385B1 (en) 2003-11-05

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