Nebulizer and nebulizer kit

Patent metadata

Field	Value
Publication number	US-9504794-B2
Application number	US-201414289100-A
Country	US
Kind code	B2
Filing date	May 28, 2014
Priority date	Dec 27, 2011
Publication date	Nov 29, 2016
Grant date	Nov 29, 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. An upper sloped surface region that slopes toward the suction channel is provided above the liquid suction port.

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,
an upper sloped surface region that slopes toward the first suction channel as the region progresses upward is provided above the liquid suction port of the suction channel formation member,
a lower sloped surface region that slopes toward the first suction channel as the region progresses downward is provided below the liquid suction port of the suction channel formation member,
the upper sloped surface region and the lower sloped surface region have a planar shape, and
a portion where the upper sloped surface region and the lower sloped surface region intersect is in form of a straight line.

2. The nebulizer kit according to claim 1 ,
wherein an angle of slope of the upper sloped surface region is no less than 20° and no more than 45°.

3. The nebulizer kit according to claim 1 ,
wherein a region of the suction channel formation member located between the liquid suction port and the nozzle hole is more hydrophilic than regions other than the region of the suction channel formation member.

4. 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

• A61M2209/10

  Equipment for cleaning · CPC title

• A61M2206/14

  Static flow deviators in tubes disturbing laminar flow in tubes, e.g. archimedes screws · CPC title

• A61M11/002

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

• A61M2209/06

  Packaging for specific medical equipment · CPC title

• A61M11/02 Primary

  operated by air {or other gas} pressure applied to the liquid {or other product} to be sprayed or atomised {(sprayers for horticulture A01G, A01H; killing insects A01M; air humidifying by nozzles F24F6/14, F24F6/18; cooling by spraying F28B, F28C)} · CPC title