US2900978A - Suction device - Google Patents

Suction device Download PDF

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Publication number
US2900978A
US2900978A US462578A US46257854A US2900978A US 2900978 A US2900978 A US 2900978A US 462578 A US462578 A US 462578A US 46257854 A US46257854 A US 46257854A US 2900978 A US2900978 A US 2900978A
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US
United States
Prior art keywords
suction
subpressure
chamber
nozzle
gas
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.)
Expired - Lifetime
Application number
US462578A
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English (en)
Inventor
Johannisson Dag Olof Alfred
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.)
Svenska AB Gasaccumulator
Original Assignee
Svenska AB Gasaccumulator
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 Svenska AB Gasaccumulator filed Critical Svenska AB Gasaccumulator
Application granted granted Critical
Publication of US2900978A publication Critical patent/US2900978A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
    • F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
    • F04F5/20—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids for evacuating
    • F04F5/22—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids for evacuating of multi-stage type
    • 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
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/80—Suction pumps
    • A61M1/804—Suction pumps using Laval or Venturi jet pumps

Definitions

  • the present invention refers to a suction device, which is particularly suited for medical applications and which will therefore be described in an embodiment that lends itself to such applications.
  • the device according to the present invention may be used in any connection where it is desired to provide during normal conditions a certain suction effect, which is to be materially enhanced if a predetermined change in the pressure conditions takes place.
  • a suction bottle is usually connected with the patients breathing organs, subpressure being created in the suction bottle and contributing to cleaning out the breathing organs by suction.
  • a pressure of approximately 300 mm. Hg may suice for this purpose, but it may be of advantage to create at times a stronger sfuction effect in order to remove mucus clots or the like, for which purpose a higher pressure, such as approximately 600 mm. Hg, may be required.
  • a further object of the invention is to provide a suction device adapted for connection to the respiratory organs of a patient so as to suck out obstructions ⁇ in the organs and in which a higher pressure becomes effective if an obstruction does not yield to the normal subpressure created by the device.
  • the suction device comprises a rst suction means adapted to create a subpressure, a second ⁇ suction means adapted to create a substantially greater subpressure and a switching means responsive to predetermined pressure conditions set up by the iirst suction means to cause the second suction means to become operative.
  • the suction means may comprise ejector nozzles adapted to create a subpressure upon the application of gas of increased pressure to the nozzles, the outlet of one nozzle being connected to the inlet of the other.
  • the outlet of the second nozzle forming the second suction means may be connected to the inlet of the first nozzle.
  • the first and second nozzles are arranged in separate chambers, the chambers being connected to separate suction outlets of the device.
  • the switching means may comprise a non-return valve arranged in the irst outlet.
  • the suction device may be constructed in the form of a plug for insertion into j 2,900,978v Patented Aug. 25, 1959 ICC an aperture, such as a bottle neck, the suction outlets being then arranged to ⁇ communicate with the aperture.
  • the invention will be described in more detail in a preferredembodiment thereof illustrated on the annexed drawing which dagrammatically discloses the device in cross section. This section is taken through the middle of the substantially cylindrical device in such a manner as to pass through the tubular passages provided therein.
  • the embodiment illustrated is constructed as a plug for insertion into the neck of a suction bottle.
  • 1 designates the aperture formed by the neck of a suction bottle, into which the suction device 2 is adapted to be inserted.
  • the suction device is supplied with a gas of higher pressure through an inlet aperture 3 thereof, the gas ilowing through the device and leading it through an outlet'aperture 4.
  • the gas then Hows on through a frusto conical passageway 7, which also operates as an ejector nozzle and forms a rst suction means of the device, the suction created by this nozzle or channel being however weaker than that at the nozzle 5.
  • This weaker subpressure is obtained in the chamber 9, which surrounds the outlet of passageway 7.
  • the gas ilows onward through a modied frustoconical passageway 8 and up to the outlet aperture 4.
  • the chamber 9 communicates with the interior of the bottle through valve means connecting the chamber with the bottle neck.
  • This suction outlet is formed by a channel 10, which is provided in an exteriorly threaded tubular piece 11 inserted into a lower, threaded portion of the Vchamber 9.
  • the rupper part of the piece 11 is constructed as a valve seat 12, on which a Valve disk 13 rests.
  • the chamber 6 also communicates with the interior of the bottle through a second suction outlet in the form of a channel or passage 14.
  • the suction bottle is assumed to be provided with an aperture, by means of which it can be connected, for example, with a patients respiratory organs. Gas under increased pressure is supplied at the aperture 3. This creates a subpressure in the chamber 9, which causes a suction effect in the bottle, provided that it is suilicient to lift the disk 13 off the Valve seat. Under normal conditions this suction effect is suicient to remove mucus and the like.
  • a subpressure is set up in the chamber 6 at the same time, which is no greater than that obtained in the chamber 9. This is true because the ejector 5 is proportioned to have a small capacity yet be able to create a large subpressure, the slot formed between the nozzle aperture and the inlet of the passageway being narrow for this purpose.
  • said rst and second suction means commonly including a frusto-conical passageway providing a flow path such that with normal respirationof said patient said valve means is opened to draw mucus from said tract, and, with restricted respiration due to mucusv blockage and buildup of subapressure in said second suction means, said valve means is closed andsaid passage means is rendered operative to draw mucus from saidv track.
  • a suction device according to claim 1 wherein said first gas suction means further includes a modied frusto- V4 t conical passageway, and said second gas suction means includes an ejection nozzle.
  • a ⁇ suction device wherein said first suction means further includes a rst chamber means intermediate said frusto-conical passageway and said modified frusto-conical passageway, said rst chamber means communicating with said valve means.
  • a suction device accordingtoA claim 2 wherein said second suction means further includes a second chamber means intermediate said ejection nozzle and said frustoconical passageway, said' second chamber means communicating with said passage means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Vascular Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Anesthesiology (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • External Artificial Organs (AREA)
US462578A 1953-10-23 1954-10-15 Suction device Expired - Lifetime US2900978A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE766729X 1953-10-23

Publications (1)

Publication Number Publication Date
US2900978A true US2900978A (en) 1959-08-25

Family

ID=20330012

Family Applications (1)

Application Number Title Priority Date Filing Date
US462578A Expired - Lifetime US2900978A (en) 1953-10-23 1954-10-15 Suction device

Country Status (5)

Country Link
US (1) US2900978A (ru)
BE (1) BE532754A (ru)
DE (1) DE1071290B (ru)
FR (1) FR1110098A (ru)
GB (1) GB766729A (ru)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3191600A (en) * 1962-05-04 1965-06-29 Hazen F Everett Blood suction apparatus
US3450335A (en) * 1967-05-25 1969-06-17 Miller Stephenson Chem Co Inc Portable aspirators
US3452751A (en) * 1965-11-12 1969-07-01 George K Austin Jr Air operated evacuation system
US3516405A (en) * 1967-06-20 1970-06-23 United Aircraft Corp Aspirator and control therefor
US3959864A (en) * 1973-12-05 1976-06-01 Aktiebolaget Piab Method for producing an ejector device
US4880411A (en) * 1988-04-01 1989-11-14 Life Support Products, Inc. Disposable aspirator
EP1348873A1 (en) * 2002-03-19 2003-10-01 Nihon Pisco Co., Ltd. Vacuum generator
US20150190598A1 (en) * 2012-09-26 2015-07-09 Ulvac Kiko, Inc. Sputum Apparatus, Artificial Ventilation System, and Method for Operating Sputum Apparatus
EP2879732B1 (en) 2012-08-03 2016-02-17 KCI Licensing, Inc. Interfaces and systems for use in reduced pressure tissue treatment
US20230304510A1 (en) * 2022-03-25 2023-09-28 Guardair Corp. Multistage vacuum

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1187435B (de) * 1960-03-30 1965-02-18 Jaeger Erich Kupplungssystem fuer Druckgasanlagen, insbesondere in Krankenhaeusern
US3304888A (en) * 1963-08-28 1967-02-21 Kuwahara Masayuki Suction apparatus for medical and other uses
DE3025525A1 (de) * 1980-07-05 1982-01-28 Jürgen 4477 Welver Volkmann Ejektorvorrichtung
DE3408812A1 (de) * 1983-12-29 1985-07-11 BEGO Bremer Goldschlägerei Wilh. Herbst GmbH & Co, 2800 Bremen Schmelzgeraet fuer die feingiesstechnik, insbesondere dentaltechnik
DE3509626A1 (de) * 1985-03-16 1986-09-18 Philips Patentverwaltung Gmbh, 2000 Hamburg Vorrichtung zum erzeugen eines dosierten kurzzeitigen gas-unterdruckimpulses
US5228839A (en) * 1991-05-24 1993-07-20 Gast Manufacturing Corporation Multistage ejector pump

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US500677A (en) * 1893-07-04 Injector
US2063665A (en) * 1934-03-21 1936-12-08 Baxter Don Inc Diffusion vacuum pump
GB690649A (en) * 1950-03-22 1953-04-22 Alois Vogt Improvements in or relating to apparatus for the production of high vacuums

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US500677A (en) * 1893-07-04 Injector
US2063665A (en) * 1934-03-21 1936-12-08 Baxter Don Inc Diffusion vacuum pump
GB690649A (en) * 1950-03-22 1953-04-22 Alois Vogt Improvements in or relating to apparatus for the production of high vacuums

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3191600A (en) * 1962-05-04 1965-06-29 Hazen F Everett Blood suction apparatus
US3452751A (en) * 1965-11-12 1969-07-01 George K Austin Jr Air operated evacuation system
US3450335A (en) * 1967-05-25 1969-06-17 Miller Stephenson Chem Co Inc Portable aspirators
US3516405A (en) * 1967-06-20 1970-06-23 United Aircraft Corp Aspirator and control therefor
US3959864A (en) * 1973-12-05 1976-06-01 Aktiebolaget Piab Method for producing an ejector device
US4880411A (en) * 1988-04-01 1989-11-14 Life Support Products, Inc. Disposable aspirator
EP1348873A1 (en) * 2002-03-19 2003-10-01 Nihon Pisco Co., Ltd. Vacuum generator
EP2879732B1 (en) 2012-08-03 2016-02-17 KCI Licensing, Inc. Interfaces and systems for use in reduced pressure tissue treatment
US20150190598A1 (en) * 2012-09-26 2015-07-09 Ulvac Kiko, Inc. Sputum Apparatus, Artificial Ventilation System, and Method for Operating Sputum Apparatus
US9402969B2 (en) * 2012-09-26 2016-08-02 Ulvac Kiko, Inc. Sputum aspirating apparatus, artificial ventilation system including a sputum aspirating apparatus, and method for operating a sputum aspirating apparatus
US20230304510A1 (en) * 2022-03-25 2023-09-28 Guardair Corp. Multistage vacuum

Also Published As

Publication number Publication date
FR1110098A (fr) 1956-02-06
GB766729A (en) 1957-01-23
DE1071290B (ru)
BE532754A (ru)

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