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CA2473681A1 - Device of miniaturised construction for producing high pressure in a fluid to be atomised - Google Patents

Device of miniaturised construction for producing high pressure in a fluid to be atomised

Info

Publication number
CA2473681A1
CA2473681A1 CA 2473681 CA2473681A CA2473681A1 CA 2473681 A1 CA2473681 A1 CA 2473681A1 CA 2473681 CA2473681 CA 2473681 CA 2473681 A CA2473681 A CA 2473681A CA 2473681 A1 CA2473681 A1 CA 2473681A1
Authority
CA
Grant status
Application
Patent type
Prior art keywords
piston
hollow
valve
end
member
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
CA 2473681
Other languages
French (fr)
Other versions
CA2473681C (en )
Inventor
Joachim Jaeger
Pasquale Cirillo
Joachim Eicher
Johannes Geser
Bernhard Freund
Bernd Zierenberg
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.)
Boehringer Ingelheim International GmbH
Original Assignee
Boehringer Ingelheim International GmbH
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

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M15/00Inhalators
    • A61M15/0065Inhalators with dosage or measuring devices
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M15/00Inhalators
    • A61M15/0065Inhalators with dosage or measuring devices
    • A61M15/0068Indicating or counting the number of dispensed doses or of remaining doses
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M15/00Inhalators
    • A61M15/0065Inhalators with dosage or measuring devices
    • A61M15/0068Indicating or counting the number of dispensed doses or of remaining doses
    • A61M15/0081Locking means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus
    • B05B11/30Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus the flow being effected by a pump
    • B05B11/3001Piston pumps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus
    • B05B11/30Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus the flow being effected by a pump
    • B05B11/3042Components or details
    • B05B11/3066Pump inlet valves
    • B05B11/3067Pump inlet valves actuated by pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus
    • B05B11/30Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus the flow being effected by a pump
    • B05B11/3042Components or details
    • B05B11/308Means for counting the number of dispensing strokes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus
    • B05B11/30Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus the flow being effected by a pump
    • B05B11/309Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus the flow being effected by a pump the dispensing stroke being effected by the stored energy of a spring
    • B05B11/3091Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus the flow being effected by a pump the dispensing stroke being effected by the stored energy of a spring being first hold in a loaded state by locking means or the like, then released
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10Valves; Arrangement of valves
    • F04B53/12Valves; Arrangement of valves arranged in or on pistons
    • F04B53/125Reciprocating valves
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M15/00Inhalators
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M15/00Inhalators
    • A61M15/0065Inhalators with dosage or measuring devices
    • A61M15/0068Indicating or counting the number of dispensed doses or of remaining doses
    • A61M15/007Mechanical counters
    • A61M15/0071Mechanical counters having a display or indicator
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M2205/00General characteristics of the apparatus
    • A61M2205/75General characteristics of the apparatus with filters
    • A61M2205/7545General characteristics of the apparatus with filters for solid matter, e.g. microaggregates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus
    • B05B11/0005Components or details
    • B05B11/0037Containers
    • B05B11/004Containers with means for compensating for the underpressure created by evacuating the container
    • B05B11/0043Containers with means for compensating for the underpressure created by evacuating the container the container being a collapsible or foldable bag
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus
    • B05B11/30Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus the flow being effected by a pump
    • B05B11/309Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus the flow being effected by a pump the dispensing stroke being effected by the stored energy of a spring
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/7722Line condition change responsive valves
    • Y10T137/7837Direct response valves [i.e., check valve type]
    • Y10T137/7904Reciprocating valves
    • Y10T137/7908Weight biased
    • Y10T137/7909Valve body is the weight
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/7722Line condition change responsive valves
    • Y10T137/7837Direct response valves [i.e., check valve type]
    • Y10T137/7904Reciprocating valves
    • Y10T137/7908Weight biased
    • Y10T137/7909Valve body is the weight
    • Y10T137/7913Guided head
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/7722Line condition change responsive valves
    • Y10T137/7837Direct response valves [i.e., check valve type]
    • Y10T137/7904Reciprocating valves
    • Y10T137/7908Weight biased
    • Y10T137/7909Valve body is the weight
    • Y10T137/7913Guided head
    • Y10T137/7915Guide stem
    • Y10T137/7916With closing stop

Abstract

A miniaturised device far producing high pressure in a fluid imposes stringent requirements on the manufacturing process. The device according to the invention consists of a hollow piston (57) displaceably mounted in a cylinder and a valve member (58; which is guided by the hollow piston (57) and mounted so as to be axially movable relative to the hollow piston (57). The valve member (58) is arranged at one end of the hollow piston (57) inside or immediately in front of the end of the hollow piston (57). The device is used in a mechanically operated high pressure atomiser. This consists of a two-part housing which comprises a pump housing (52) with nozzle (54), a blocking mechanism (62), a spring housing (67) with spring (68), a non-pressurised storage container (71) for the fluid (72) and a mechanical counter integrated in the spring housing (67). The valve (58) operates without any auxiliary force, closes very rapidly and is sealed tight against high pressure. The atomiser is safe and simple to operate and environmentally friendly. The fluid is metered extremely accurately. The atomiser is used, for example, to produce an inhalable aerosol of a liquid medicament without the use of a propellant gas, at 320 bar, for example.

Claims (15)

1. A device for pressurizing fluid, comprising:
a cylinder;
a cylindrical hollow piston movable in said cylinder and providing a path for fluid therethrough, wherein an inlet end or an outlet end of said hollow piston includes a widened portion, an inner diameter of said widened portion being greater than the inner diameter of the remainder of said hollow piston, and wherein said inlet end or said outlet end includes an inwardly shaped edge;
a valve seal provided by said piston;
a high pressure chamber inside said cylinder; and a valve operating without any auxiliary force, said valve including, a uniaxially rotationally symmetrical valve member including a sealing surface at an inlet end of said valve member to cooperate with said valve seal, said valve member being guided inside said widened portion of said hollow piston, wherein the diameter of said valve member is less than said inner diameter of said widened portion and is greater than said inner diameter of the remainder of said hollow piston, such that said valve member does not extend into the remainder of said hollow piston, stop means provided at an outlet end of said widened portion to hold said valve member inside said hollow piston, a recess in said stop means or a recess or radially extending indentation in said valve member at an outlet end thereof, wherein said valve is closed when said valve member abuts said valve seal and said valve is open when said valve member abuts said stop means.
2. A device according to claim 1, wherein said sealing surface is an end surface of said valve member.
3. A device according to claim 1, wherein said high pressure chamber is located in front of said hollow piston.
4. A device according to claim 1, wherein said valve member is mounted in an axially movable manner.
5. A device according to claim 1, wherein at least a major part of said valve member is cylindrical.
6. A device according to claim 1, wherein said valve member is cylindrical.
7. A device according to claim 1, wherein said widened portion is disposed at said outlet end of said cylindrical hollow piston and said inwardly shaped edge is disposed at said outlet end of said hollow piston and comprises said stop means.
8. A device according to claim 1, wherein said widened portion is disposed at said inlet end of said hollow piston, said inwardly shaped edge is disposed at said outlet end of said hollow piston and comprises said stop means.
9. A device according to claim 1, further comprising:
an encircling constriction near said inwardly shaped edge of said hollow piston, wherein said valve member is guided and mounted in axially movable manner inside said hollow piston between said inwardly shaped edge a.nd said encircling constriction.; and a recess in the region of said outlet end of said valve member.
10. A device according to claim 9, wherein said inwardly shaped edge is disposed at said inlet end of said hollow piston and comprises said valve seal; and said encircling constriction is provided in the vicinity of said inwardly shaped edge at said inlet end of said hollow piston and comprises said stop means.
11. A device according to claim 9, wherein said inwardly shaped edge is disposed a.t said outlet end of said hollow piston and comprises said stop means.
12. A device according to claim 1, wherein said cylindrical hollow piston includes a first encircling constriction spaced apart from said outlet end of said hollow piston, said first encircling said constriction comprising said stop means, and a second encircling constriction between said first constriction and said inlet end of said hollow piston, said second encircling' constriction comprising said valve seal; and wherein said valve member is guided and. mounted in axially movable manner between said first and second constrictions.
13. A device according to claim 12, further comprising a displacement body disposed at said inlet end of said hollow piston, said displacement body having an axially extending channel and being arranged in and fixedly connected to said hollow piston, said displacement body extending as far as said second encircling constriction.
14. A device according to claim 12, further comprising a displacement body disposed at said outlet end of said hollow piston, said displacement body having an axially extending channel and being mounted in and fixedly connected to said hollow piston, said displacement body extending as far as said first encircling constriction.
15. A device according to claim 1, wherein a said widened portion is disposed at said inlet end of said hollow piston and the device further comprises:
a tube disposed in the remainder of said hollow piston, a closure member disposed at said widened portion, said closure member connected to and containing a flat or conical depression with a bore, and a slot provided at said outlet end of said valve member as a recess or a notch.
CA 2473681 1995-10-04 1996-10-04 Device of miniaturised construction for producing high pressure in a fluid to be atomised Expired - Lifetime CA2473681C (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE1995136902 DE19536902A1 (en) 1995-10-04 1995-10-04 Apparatus for generating high pressure in a fluid in miniature version
DE19536902.5 1995-10-04
CA 2232151 CA2232151C (en) 1995-10-04 1996-10-04 Device of miniaturised construction for producing high pressure in a fluid to be atomised

Publications (2)

Publication Number Publication Date
CA2473681A1 true true CA2473681A1 (en) 1997-04-10
CA2473681C CA2473681C (en) 2010-12-14

Family

ID=7773961

Family Applications (4)

Application Number Title Priority Date Filing Date
CA 2551891 Expired - Lifetime CA2551891C (en) 1995-10-04 1996-10-04 Device of miniaturised construction for producing high pressure in a fluid to be atomised
CA 2551999 Expired - Lifetime CA2551999C (en) 1995-10-04 1996-10-04 Device of miniaturised construction for producing high pressure in a fluid to be atomised
CA 2232151 Expired - Lifetime CA2232151C (en) 1995-10-04 1996-10-04 Device of miniaturised construction for producing high pressure in a fluid to be atomised
CA 2473681 Expired - Lifetime CA2473681C (en) 1995-10-04 1996-10-04 Device of miniaturised construction for producing high pressure in a fluid to be atomised

Family Applications Before (3)

Application Number Title Priority Date Filing Date
CA 2551891 Expired - Lifetime CA2551891C (en) 1995-10-04 1996-10-04 Device of miniaturised construction for producing high pressure in a fluid to be atomised
CA 2551999 Expired - Lifetime CA2551999C (en) 1995-10-04 1996-10-04 Device of miniaturised construction for producing high pressure in a fluid to be atomised
CA 2232151 Expired - Lifetime CA2232151C (en) 1995-10-04 1996-10-04 Device of miniaturised construction for producing high pressure in a fluid to be atomised

Country Status (11)

Country Link
US (7) US5964416A (en)
EP (2) EP1214985B1 (en)
JP (5) JP3488717B2 (en)
KR (1) KR100431011B1 (en)
CN (1) CN1091660C (en)
CA (4) CA2551891C (en)
DE (5) DE19536902A1 (en)
DK (2) DK0853501T3 (en)
ES (2) ES2201204T3 (en)
RU (1) RU2179075C2 (en)
WO (1) WO1997012687A1 (en)

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