Nebulizer and nebulizer kit

Patent metadata

Field	Value
Publication number	US-9522242-B2
Application number	US-201414288941-A
Country	US
Kind code	B2
Filing date	May 28, 2014
Priority date	Dec 27, 2011
Publication date	Dec 20, 2016
Grant date	Dec 20, 2016

Abstract

A nebulizer kit includes a case body having a compressed air introduction tube, in an upper end portion of which a nozzle hole that expels compressed air is formed, a suction channel formation member that forms a suction channel for sucking a liquid toward the upper end portion and that forms an atomizing area in an exit region of the nozzle hole, and a flow channel formation member having an aerosol discharge port. The suction channel has a first suction channel extending upward along an outer circumferential surface of the compressed air introduction tube, and a second suction channel that extends from the first suction channel toward the nozzle hole at a leading end area of the compressed air introduction tube and has a liquid suction port that expels the liquid.

First claim

The invention claimed is:

1. A nebulizer kit comprising:
a case body, having an open upper end, and including a compressed air introduction tube, extending upward, into which compressed air is introduced and in an upper end portion of which a nozzle hole that expels the compressed air is formed, and further including a liquid reservoir portion provided surrounding an outer circumferential surface of the compressed air introduction tube at a bottom area of the compressed air introduction tube;
a suction channel formation member that forms a suction channel that sucks a liquid held in the liquid reservoir portion toward the upper end portion of the compressed air introduction tube and forms an atomizing area in an exit region of the nozzle hole provided in the compressed air introduction tube by covering the outer circumferential surface of the compressed air introduction tube; and
a flow channel formation member, including an aerosol discharge port that discharges an aerosol formed at the atomizing area to the exterior, that is attached to the case body so as to cover an upper opening of the case body,
wherein the suction channel includes:
a first suction channel that extends upward along the outer circumferential surface of the compressed air introduction tube; and
a second suction channel that extends from the first suction channel toward the nozzle hole at a leading end area of the compressed air introduction tube and has a liquid suction port that expels the liquid that has been sucked up,
the second suction channel is formed so as to pass through a portion of the suction channel formation member from an interior of the channel formation member toward a surface of the channel formation member, and
a liquid collecting portion having a larger cross-sectional channel area than that of the second suction channel is provided in a region where the first suction channel and the second suction channel intersect.

2. The nebulizer kit according to claim 1 ,
wherein the liquid suction port is positioned above a region in which the nozzle hole is provided when the nozzle hole is viewed from the liquid suction port.

3. The nebulizer kit according to claim 2 ,
wherein the nozzle hole is formed in a circular shape, and
a center line of the nozzle hole is positioned on a plane that includes the liquid suction port.

4. The nebulizer kit according to claim 1 ,
wherein an opening of the liquid suction port is shaped so as to extend horizontally.

5. The nebulizer kit according to claim 1 ,
wherein the nozzle hole is defined by an inner circumferential surface, and
the inner circumferential surface is a tapered surface that widens outward.

6. A nebulizer comprising:
a main body including a compressor that discharges compressed air;
a compressed air tube portion through which the compressed air discharged by the compressor is introduced; and
the nebulizer kit according to claim 1 , to which one end of the compressed air tube portion is attached and that produces an aerosol.

Assignees

• Omron Healthcare Co Ltd

Inventors

• Esaki Masayuki
• Sasai Yoichi

Classifications

• A61M11/002

  by flow deviation causing inertial separation of transported particles · CPC title

• A61M2209/06

  Packaging for specific medical equipment · CPC title

• B05B7/2429 Primary

  the carried liquid and the main stream of atomising fluid being brought together after discharge (B05B7/2435 takes precedence) · CPC title

• A61M11/06

  of the injector type · CPC title

• A61M2209/10

  Equipment for cleaning · CPC title