# US 6,827,340 B2 · CPAP humidifier

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- Number: US 6,827,340 B2
- Document ID: US6827340B2
- Status: Granted
- Kind: B2
- Application number: 09/928,896
- Filed: 2001-08-13
- Published: 2002-02-21
- Granted: 2004-12-07
- Earliest claimed: 2000-08-14
- Assignees: TAGA Medical Technologies, Inc.
- Inventors: Gary Austin; James T. Austin
- Web page: https://patentgrep.com/patent/US6827340B2

## CPC

- A61M 16/16: Devices to humidify the respiration air {(A61M16/1045 takes precedence)}
- A61M 16/109: {the humidifying liquid or the beneficial agent}
- A61M 16/0066: {Blowers or centrifugal pumps}
- A61M 2205/3653: by Joule effect, i.e. electric resistance
- A61M 2205/3666: using heat loss of a motor
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}

## Abstract

Passive humidifier for a continuous positive airway pressure (CPAP) device having a plurality of chambers defined by arced baffles. Each opening between the arced baffles is provided with a deflector baffle to prevent direct passage of air.

## Claims

### Claim 1

A humidifier for a continuous positive airway pressure device, comprising:
a humidifier body;
an air inlet provided to the humidifier body;
an air outlet provided to the humidifier body;
a plurality of chambers defined within the humidifier body;
a plurality of elongated baffles arranged in a row extending in a longitudinal direction of each of the plurality of baffles, and the row being positioned between one of the plurality of chambers and an adjacent one of the plurality of chambers;
an opening provided between two of the plurality of baffles of the row, the opening connecting the adjacent two of said plurality of chambers; and
a deflector baffle located proximate to the opening and defining a serpentine fluid flow path between the adjacent chambers.

### Claim 2 (depends on 1)

The humidifier of claim 1, wherein the air outlet is spaced away from the humidifier body and defines an air outlet chamber.

### Claim 3 (depends on 1)

The humidifier of claim 1, wherein the air inlet is provided with an inlet baffle.

### Claim 4 (depends on 1)

The humidifier of claim 1, wherein at least one of the plurality of baffles is curved.

### Claim 5 (depends on 1)

The humidifier of claim 1, wherein at least one of the plurality of baffles is connected to a top side of the humidifier body and is spaced apart from a bottom side of the humidifier body.

### Claim 6 (depends on 1)

The humidifier of claim 1, wherein each of the plurality of baffles is connected to top side of the humidifier body and is spaced apart from a bottom side of the humidifier body.

### Claim 7 (depends on 1)

The humidifier of claim 1, wherein the humidifier body comprises a base portion and a cover portion.

### Claim 8 (depends on 7)

The humidifier of claim 7, wherein the base portion and the cover portion are permanently bonded together.

### Claim 9 (depends on 7)

The humidifier of claim 7, wherein the cover portion is removable from the base portion.

### Claim 10 (depends on 7)

The humidifier of claim 7, wherein the base portion and the cover portion are provided with a tongue and a corresponding groove.