Respiratory gas therapy

Patent metadata

Field	Value
Publication number	US-2017348505-A1
Application number	US-201515532475-A
Country	US
Kind code	A1
Filing date	Nov 3, 2015
Priority date	Dec 3, 2014
Publication date	Dec 7, 2017
Grant date	—

Abstract

A gases humidifier comprising: a gases inlet and an outlet, a removable humidification chamber cartridge with a heater source adapted to vaporize fluid; and a metering arrangement adapted to connect to and transfer fluid from a fluid supply to the humidification chamber.

First claim

1 . A gases humidifier comprising:
a humidification chamber adapted to vaporize fluid; and a metering arrangement adapted to transfer fluid from a fluid supply to the humidification chamber; wherein at least a part of the metering arrangement lies within the gases humidifier.

2 . The gases humidifier of claim 1 , wherein at least a part of the metering arrangement lies within the humidification chamber.

3 . The gases humidifier of claim 2 , wherein only an outlet of the metering arrangement lies within the humidification chamber.

4 . The gases humidifier of claim 1 , wherein the metering arrangement comprises a pump.

5 . The gases humidifier of claim 1 , wherein the humidification chamber comprises a heater adapted to heat the fluid.

6 . The gases humidifier of claim 5 , further comprising a thermally conductive element positioned over the heater.

7 . The gases humidifier of claim 6 , wherein the metering arrangement is configured to transfer liquid directly to the thermally conductive element.

8 . The gases humidifier of claim 6 , wherein an outlet of the metering arrangement is positioned directly over the thermally conductive element.

9 . The gases humidifier of claim 6 , wherein the humidification chamber defines a cavity adapted to accept the thermally conductive element.

10 . The gases humidifier of claim 9 , wherein the thermally conductive element is slideably locatable within the cavity.

11 . The gases humidifier of either of claim 9 or 10 , further comprising a locking engagement arrangement configured to retain the thermally conductive element within the cavity.

12 . The gases humidifier of claim 11 wherein the locking engagement arrangement comprises open and closed positions, and wherein the locking engagement arrangement may be detached from the gases humidifier when in the open position to allow access to the thermally conductive element.

13 . A gases humidifier comprising:
a gases inlet; a gases outlet; a humidification chamber interposed between the gases inlet and the gases outlet, the humidification chamber adapted to vaporize a liquid such that it is transferred to a gas stream passing through the humidifier from the gases inlet to the gases outlet; and a metering arrangement adapted to transfer the liquid from a liquid supply to the humidification chamber; wherein at least a part of the metering arrangement lies within the humidification chamber.

14 . The gases humidifier of claim 13 , wherein only an outlet of the metering arrangement lies within the humidification chamber.

15 . The gases humidifier of claim 13 , wherein the metering arrangement comprises a pump.

16 . The gases humidifier of claim 13 , wherein the humidification chamber comprises a heater adapted to heat the fluid.

17 . The gases humidifier of claim 16 , further comprising a thermally conductive element positioned over the heater.

18 . The gases humidifier of claim 17 , wherein the metering arrangement is configured to transfer liquid directly to the thermally conductive element.

19 . The gases humidifier of claim 17 , wherein an outlet of the metering arrangement is positioned directly over the thermally conductive element.

20 . The gases humidifier of claim 17 , wherein the humidification chamber defines a cavity adapted to accept the thermally conductive element.

21 . The gases humidifier of claim 20 , wherein the thermally conductive element is slideably locatable within the cavity.

22 . The gases humidifier of claim 20 , further comprising a locking engagement arrangement configured to retain the thermally conductive element within the cavity.

23 . The gases humidifier of claim 22 , wherein the locking engagement arrangement comprises open and closed positions, and wherein the locking engagement arrangement may be detached from the gases humidifier when in the open position to allow access to the thermally conductive element.

24 - 42 . (canceled)

Assignees

• Fisher & Paykel Healthcare Ltd

Inventors

• Doo James Samuel Wong
• Partington Andrew John
• Alami Nordyn

Classifications

• A61M2205/8206

  battery-operated · CPC title

• A61M16/109

  the humidifying liquid or the beneficial agent · CPC title

• A61M16/0066

  Blowers or centrifugal pumps · CPC title

• A61M2016/0039

  in the inspiratory circuit · CPC title

• A61M16/1055

  bacterial · CPC title