System and method for controlling bolus pulse duration based on inspiratory time in an oxygen concentation system

• US 9,278,185 B2
• Filed: 09/03/2009
• Issued: 03/08/2016
• Est. Priority Date: 09/04/2008
• Status: Active Grant

• Current Assignee: Caire Incorporated (Niterra Co., Ltd.)
• Original Assignee: Caire Incorporated (Niterra Co., Ltd.)
• Inventors: Richard, Ronald F., Edwards, Paul L.
• Primary Examiner(s): Yu, Justine
• Assistant Examiner(s): MILLER, CHRISTOPHER E
• Application Number:
  US12/553,801
• Publication Number:
  US 20100051030A1
• Time in Patent Office: 2,378 Days
• Field of Search: 128/201.21, 128/203.14, 128/203.24, 128/204.18, 128/204.21, 128/204.22, 128/204.23, 128/204.26, 128/205.11, 128/203.12, 128/203.25, 951/30, 961/21, 961/24
• US Class Current: 1/1
• 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 16/161 with means for measuring the humidity
• CPC Class Codes: A61M 2016/0021 with a proportional output signal, e.g. from a thermistor
• CPC Class Codes: A61M 2016/0039 in the inspiratory circuit
• CPC Class Codes: A61M 2202/0208 Oxygen
• CPC Class Codes: A61M 2205/3358 Measuring barometric pressure, e.g. for compensation
• CPC Class Codes: A61M 2205/3368 Temperature
• CPC Class Codes: A61M 2205/505 Touch-screens; Virtual keyboard or keypads; Virtual buttons; Soft keys; Mouse touches
• CPC Class Codes: A61M 2205/8206 battery-operated
• CPC Class Codes: A61M 2205/8268 Fuel storage cells
• 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 2259/40005 using rotary valves
• CPC Class Codes: B01D 2259/40071 Nine
• CPC Class Codes: B01D 2259/4061 using five beds
• CPC Class Codes: B01D 2259/4146 : Contiguous multilayered adsorbents
• 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 53/0415 : Beds in cartridges
• CPC Class Codes: B01D 53/0446 : Means for feeding or distributing gases
• CPC Class Codes: B01D 53/047 : Pressure swing adsorption
• CPC Class Codes: C01B 13/0233 : Chemical processing only
• CPC Class Codes: C01B 13/0251 : by making use of membranes
• CPC Class Codes: C01B 13/027 : Zeolites
• CPC Class Codes: C01B 2210/0046 : Nitrogen
• CPC Class Codes: C01B 2210/0062 : Water
• CPC Class Codes: C01B 3/56 : by contacting with solids; Regeneration of used solids C01B3/508 takes precedence

Abstract

A method of controlling bolus delivery in a pulse flow oxygen concentration system for a patient includes providing a pulse flow oxygen concentration system that delivers concentrated oxygen gas to the patient in boluses having a pulse bolus duration, the pulse flow oxygen concentration system including an open control for controlling the pulse bolus duration of the boluses; determining one or more respiratory conditions of the patient; and adjusting the open control to adjust the pulse bolus duration of the boluses in accordance with the determined one or more respiratory conditions of the patient.

Claims

1. A method of controlling bolus delivery in a pulse flow oxygen concentration system for a patient, comprising:

providing a pulse flow oxygen concentration system that comprises a rotary valve assembly that rotates with respect to a plurality of adsorption beds to selectively transfer fluids through the plurality of adsorption beds in order to concentrate oxygen gas from compressed air, the pulse flow concentration system delivering the concentrated oxygen gas to the patient in boluses having a pulse bolus duration, the pulse flow oxygen concentration system including an open control with a user interface for controlling the pulse bolus duration, the pulse flow oxygen concentration system being combined with a continuous flow oxygen concentration system that provides a continuous flow of oxygen to the patient;

determining one or more respiratory conditions of the patient; and

adjusting the open control to adjust the pulse bolus duration in accordance with the determined one or more respiratory conditions of the patient, the adjusting of the pulse bolus duration including presenting to a remote user a default total inspiratory time and a default percent inspiratory time, and accepting an adjustment to both the default total inspiratory time and the default percent inspiratory time from the remote user, and then the oxygen concentration system calculating a proper pulse length and flow rate to deliver a predetermined pulse volume but with a different pulse duration corresponding to the percent inspiratory time and the total inspiratory time adjusted by the remote user, the user interface being connected to the oxygen concentration system via a wireless communication network comprising at least one serial link, the user interface being operated at a location remote from the patient.

2. The method of claim 1, wherein the one or more respiratory conditions of the patient includes respiratory mechanics of the patient.

3. The method of claim 1, wherein the one or more respiratory conditions of the patient includes an inspiratory ratio of the patient.

4. The method of claim 1, wherein the one or more respiratory conditions of the patient includes an inspiratory time of the patient.

5. The method of claim 1, wherein the one or more respiratory conditions of the patient includes a percentage of the inspiratory time of the patient'"'"'s total breathing pattern.

6. The method of claim 1, wherein the one or more respiratory conditions of the patient includes an exhalatation time of the patient.

7. The method of claim 1, wherein the one or more respiratory conditions of the patient include a degree of lung over distension.

8. The method of claim 1, wherein the one or more respiratory conditions of the patient include a type of obstructive lung disease.

9. The method of claim 1, wherein the one or more respiratory conditions of the patient include a degree of lung stiffness.

10. The method of claim 1, wherein the one or more respiratory conditions of the patient include a type of restrictive lung disease.

11. The method of claim 1, wherein adjusting the open control to adjust the pulse bolus duration of the boluses includes multiplying a default pulse duration by a factor.

12. The method of claim 1, wherein the one or more respiratory conditions include chronic obstructive pulmonary disease, and adjusting the open control to adjust the pulse bolus duration includes adjusting the open control to decrease the pulse duration.

13. The method of claim 1, wherein the one or more respiratory conditions include pulmonary fibrosis, and adjusting the open control to adjust the pulse bolus duration of the boluses includes adjusting the open control to increase the pulse duration.

14. The method of claim 1, wherein adjusting the open control to adjust the pulse bolus duration includes maintaining a prescribed bolus volume while lengthening the pulse bolus duration.

15. The method of claim 1, wherein providing a pulse flow oxygen concentration system includes providing a continuous flow and pulse flow oxygen concentration system.

16. The method of claim 1, wherein providing a pulse flow oxygen concentration system includes providing a pressure swing adsorption oxygen concentration system.

17. The method of claim 1, wherein providing a pulse flow oxygen concentration system includes providing a vacuum pressure swing adsorption oxygen concentration system.

18. The method of claim 1, wherein providing a pulse flow oxygen concentration system includes providing at least one of a molecular sieve oxygen concentration system and a membrane oxygen concentration system.

19. The method of claim 1, wherein providing a pulse flow oxygen concentration system includes providing a pulse flow portable oxygen concentration system weighing 4 to 20 lbs.

20. The method of claim 1, wherein:

the user interface is configured to be directly operated by a clinician to adjust the pulse bolus duration.