System, apparatus and methods for supplying gases

Patent metadata

Field	Value
Publication number	US-2016015918-A1
Application number	US-201314378924-A
Country	US
Kind code	A1
Filing date	Feb 15, 2013
Priority date	Feb 15, 2012
Publication date	Jan 21, 2016
Grant date	—

Abstract

A system, apparatus and methods are provided for supplying gases to a user. The supply includes a sub-therapeutic mode and a pressure support mode for delivering therapy to a user. A flow diversion device or valve switches from a first mode corresponding with the sub-therapeutic mode of the system to a second mode corresponding with the pressure support mode of the system. In the first mode, the valve opens a larger flow path between the interior of the user interface and ambient air than in the second mode.

First claim

1 . A system for supplying respiratory gases to a user wearing a user interface, the system comprising:
a flow generator; and a controller controlling operation of the flow generator, the controller operating the flow generator in a first mode to create a first pressure and the controller operating the flow generator in a second mode to create a second pressure, the system transitioning between the first pressure and the second pressure in synchrony with a breathing state of the user.

2 . The system of claim 1 , wherein the system transitions from the first mode to the second mode in synchrony with an inhalation of the user.

3 . The system of claim 1 , wherein the system transitions from the second mode to the first mode in synchrony with an exhalation of the user.

4 . The system of claim 1 , wherein the system monitors a flow rate while operating in the first mode and the system transitions to the second mode if the flow rate decreases below a lower threshold for a preset period of time.

5 . The system of claim 1 , wherein the second mode comprises a pressure mode.

6 . The system of claim 1 , wherein the system transitions from the first mode to the second mode when the user is determined to be sleeping.

7 . The system of claim 6 , wherein the system determines the user to be sleeping based upon detection of sleep disordered breathing events.

8 . The system of claim 1 , wherein the system transitions from the second mode to the first mode when a minimum therapeutic pressure is reached in the second mode.

9 . The system of claim 1 , wherein the system increases pressure in synchrony with inhalation of the user in the second mode.

10 . The system of claim 1 , wherein the system decreases pressure in synchrony with exhalation of the user in the second mode.

11 . The system of claim 1 , further comprising a port to ambient and a valve assuming a first position and a second position, when in the second position, the valve substantially closing the port, the port being positioned between the user and the flow generator.

12 . The system of claim 11 , wherein the valve transitions from the first position to the second position are a result of the system transitioning from the first mode to the second mode.

13 . The system of claim 12 , wherein the system transitions from the first mode to the second mode during inhalation of the user.

14 . The system of claim 12 , wherein the system transitions from the first mode to the second mode when the system detects the start of inhalation of the user.

15 - 31 . (canceled)

Assignees

• Fisher & Paykel Healthcare Ltd

Inventors

• Kuriger Donald Roy
• Cumin David
• Rapoport David M
• Nightingale Christopher Earl
• Wannigama Sujeewa
• Arrowsmith Mark John
• Kapelevich Vitaly

Classifications

• A61M2016/003

  with a flowmeter · CPC title

• A61M2230/42

  Rate · CPC title

• A61M16/0069 Primary

  the speed thereof being controlled by respiratory parameters, e.g. by inhalation · CPC title

• A61M16/06

  Respiratory or anaesthetic masks · CPC title

• A61B5/4818

  Sleep apnoea · CPC title