CA2078089A1 - Medicament nebulizer with improved aerosol chamber - Google Patents

Medicament nebulizer with improved aerosol chamber

Info

Publication number
CA2078089A1
CA2078089A1 CA2078089A CA2078089A CA2078089A1 CA 2078089 A1 CA2078089 A1 CA 2078089A1 CA 2078089 A CA2078089 A CA 2078089A CA 2078089 A CA2078089 A CA 2078089A CA 2078089 A1 CA2078089 A1 CA 2078089A1
Authority
CA
Canada
Prior art keywords
slot
mist tube
housing
outlet
tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2078089A
Other languages
French (fr)
Other versions
CA2078089C (en
Inventor
Richard J. Kocinski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sunrise Medical HHG Inc
Original Assignee
Richard J. Kocinski
Devilbiss Health Care, Inc.
Sunrise Medical Hhg Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Richard J. Kocinski, Devilbiss Health Care, Inc., Sunrise Medical Hhg Inc. filed Critical Richard J. Kocinski
Publication of CA2078089A1 publication Critical patent/CA2078089A1/en
Application granted granted Critical
Publication of CA2078089C publication Critical patent/CA2078089C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
    • A61M11/005—Sprayers or atomisers specially adapted for therapeutic purposes using ultrasonics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
    • A61M11/001—Particle size control
    • A61M11/002—Particle size control by flow deviation causing inertial separation of transported particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
    • B05B17/0615—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers spray being produced at the free surface of the liquid or other fluent material in a container and subjected to the vibrations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/48—Sonic vibrators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/65—Vaporizers

Abstract

An improved aerosol chamber for an ultrasonic nebulizer which prevents relatively large medicament droplets from being inhaled by a patient. The chamber has a housing formed from a polycarbonate resin and is generally cylindrically shaped with a spherical top surface. The chamber includes an air inlet formed in the top surface and an aerosol outlet formed in a side surface.
A centrally located mist tube extends coaxial from the air intake downwardly past the aerosol outlet. A
longitudinally extending slot is formed in the mist tube facing the side surface of the housing diametrically opposite the outlet. The slot extends from a lower edge of the tube upwardly toward the air intake. A geyser baffle is disposed at an angle within the mist tube above the slot to deflect larger droplets away from the slot. The baffle includes an upper edge spaced from an adjacent inner surface of the mist tube to define a relatively small gap to allow inlet air to flow through the mist tube. The air flow entrains nebulized medicament droplets, flows through the slot and through an annular space between the mist tube and the housing to the outlet. The annular space creates a cyclone effect which causes larger droplets to condense on the interior walls of the housing.
CA002078089A 1991-09-12 1992-09-11 Medicament nebulizer with improved aerosol chamber Expired - Fee Related CA2078089C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/758,742 1991-09-12
US07/758,742 US5170782A (en) 1991-09-12 1991-09-12 Medicament nebulizer with improved aerosol chamber

Publications (2)

Publication Number Publication Date
CA2078089A1 true CA2078089A1 (en) 1993-03-13
CA2078089C CA2078089C (en) 1996-02-06

Family

ID=25052925

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002078089A Expired - Fee Related CA2078089C (en) 1991-09-12 1992-09-11 Medicament nebulizer with improved aerosol chamber

Country Status (4)

Country Link
US (1) US5170782A (en)
EP (1) EP0532349A3 (en)
JP (1) JPH05277188A (en)
CA (1) CA2078089C (en)

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Also Published As

Publication number Publication date
US5170782A (en) 1992-12-15
EP0532349A2 (en) 1993-03-17
JPH05277188A (en) 1993-10-26
CA2078089C (en) 1996-02-06
EP0532349A3 (en) 1993-07-07

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