US2947470A - Aspirating apparatus - Google Patents

Aspirating apparatus Download PDF

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Publication number
US2947470A
US2947470A US642033A US64203357A US2947470A US 2947470 A US2947470 A US 2947470A US 642033 A US642033 A US 642033A US 64203357 A US64203357 A US 64203357A US 2947470 A US2947470 A US 2947470A
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United States
Prior art keywords
bellows
suction
valve
pump
spring
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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
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US642033A
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English (en)
Inventor
Henning M Ruben
Hesse Holger
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Individual
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Individual
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Publication of US2947470A publication Critical patent/US2947470A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • F04B45/02—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having bellows
    • 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
    • A61M1/71—Suction drainage systems
    • 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
    • A61M1/82—Membrane pumps, e.g. bulbs
    • 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
    • F04F3/00—Pumps using negative pressure acting directly on the liquid to be pumped
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/07—General characteristics of the apparatus having air pumping means
    • A61M2205/071—General characteristics of the apparatus having air pumping means hand operated
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump

Definitions

  • the present invention relates to a new or improved suction pump, and especially to a suction pump for lifesaving purposes.
  • a pump comprising a pump cylinder, a piston and a piston rod which are supported in a stand provided with a lever, said lever being pivotally attached to the piston rod.
  • the lever arm is urged upwardly by a spring, and, when it is pressed down with the aid of a foot, a vacuum is produced inside the cylinder thus causing air to be sucked in through a valve and a tube.
  • the spring Upon release of the lever, the spring will urge the lever arm upward and thus also move the piston rod upward so that the air that has been sucked in can pass out through another valve.
  • the spring has to counter-act and overcome only the frictional forces, the weight of the lever arm and the weak counter-pressure produced when the air is released, so that a relatively weak spring is suflicient for such an apparatus.
  • a relatively weak spring is suflicient for such an apparatus.
  • such a device suffers from the disadvantage that it is much too bulky and heavy to be conveniently and easily transported.
  • a suction pump especially intended for life-saving purposes, comprising a spring-loaded'bellows and suction and discharge valves, means being provided for strongly pro-loading the bellows in its fully expanded position and means also being provided whereby said bellows are connected to a suction flask.
  • the bellows are preloaded either by means of a chain or band disposed inside the bellows and secured to the upper and lower plates thereof, or by means of jaws disposed in the interior of the bellows, or by means of bands or belts attached externally to the upper and lower plates of the bellows or, finally, by means of an externally positioned stop or abutment.
  • the suction and discharge valves may be ball valves attached to the same or different plate of the bellows.
  • the suction ball valve may also be attached directly to the suction flask and to a tube leading to the suction flask from the suction pump.
  • the discharge valve may be a disc valve built into the upper plate of the bellows.
  • Figure l is partly a cross-sectional and partly a perspective view of the apparatus
  • Figure 2 is a graph showing the properties of the spring
  • Figure 3 is an elevation of a modification of the apparatus
  • Figure 4 is a cross-sectional view of an alternative type of bellows
  • Figure 5 is a cross-sectional view of a modified form of the apparatus
  • Figure 5a is an enlarged diagrammatic cross-sectional view of a valve
  • Figure 6 is a cross-sectional view of another modified embodiment of the apparatus.
  • the pump is not as high as a piston pump, and this is of extreme importance for the foot-actuation of the pump.
  • the bellows may be, for instance of cylindrical or triangular shape.
  • the cylindrical bellows 1 is either made of a material that is in itself stiff enough not to collapse under diminished pressure, or is reinforced by means of metalic rings such as the rings 1a shown in Figure 6.
  • the upper plate 3 is urged towards the lower plate 2 by foot pressure or, if desired, by hand pressure.
  • a very strong spring 4 which, when expanding, forces apart the two end plates and thus gives rise to a vacuum.
  • the pro-loading of the spring is achieved in the expanded position by special means, e.g. by an external stop 319 shown in Figure 8 u or, as shown in Figure 1, by a flexible connection such as the chain 19 provided within the bellows and joined to the plates 2, 3 by means of pins 20, or by other suitable means.
  • the spring may be pre-loaded by means of bands or belts 219 suitably fixed on the outside of the bellows as shown in Figure 7.
  • the pre-loading of the spring may be achieved by means of jaws 119 mounted inside the bellows as shown in Figure 6.
  • the air-outlet valve 5 in the lower plate 2 allows the air to escape upon compression of the bellows.
  • the valve shown is of the ball type, but flap valves or the like may also be used.
  • a threaded cap 6 provided with a hole and attached to the under-surface of the lower plate 2 supports a spring 8 which urges a valve ball 7 against the conical wall of valve 5.
  • a suction valve 9 in the lower plate 2 may also be a ball valve.
  • a threaded cap 10, also attached to the under surface of the lower plate 2, is provided with an internal conical cavity for a valve ball 21, said ball being held in position by a spring 22.
  • a tube 23 connects the suction valve 9 to a suction flask 25 via a flexible tube 24. This flask is provided with a stopper 26 having a hole to which is attached a flexible tube 27 with which the patient is treated.
  • the pump is activated by continuously pressing and releasing the bellows by means of regular foot movements. After as few as two or three movements the vacuum produced in the flask is suflicient to suck off mucus and the like from the respiratory tracts of the patient. The pump is thus immediately ready for use.
  • FIG. 3 shows a modification of the pump adapted for use in hospitals.
  • the pump and the flask are mounted on a support 31, while a carrying handle 32 prevents the foot from pumping against the flask when exerting the pumping movements and thus serves to prevent accidental displacement of the flask.
  • Figure 4 shows a modified form of bellows.
  • a lower plate 35 and an upper plate 36, pivotally connected at 37, are provided with a bellows 38 and an internal pressure spring 39.
  • the upper plate 36 may be inclined at an angle (preferably of 30) to the lower plate to function as a pedal.
  • the pressure spring is preloaded by means of an abutment or stop 40.
  • the valves, the flask and the connecting tube of Figure l are meant to be included, but are not shown in Figure 4 for simplicity of demonstration to avoid duplication.
  • both valves are mounted in the lower plate 2.
  • one or both valves in the alternative may be disposed in the upper plate. In such an instance they may also be made without springs when the conical seat is above the ball.
  • the handle 32 shown in Figure 3 may be provided with a clamp to hold the end of the suction tube and the end of the tube applied to the patient when the pump is not in operation.
  • the pump may have an outlet valve consisting of a disc valve provided in the upper end plate 3 of the bellows and having a seating 105 screwed onto the plate.
  • a loose disc 107 is check by wires 106a, 106b which are held in position with the aid of a lid 127 mounted on the plate.
  • the suction valve of the pump is a ball valve consisting of two parts 109 and 110'. It is attached to the flexible tube 24 connecting the pump with the flask 25, preferably at that end where'said tube 24 is connected to said flask, and is provided with stoppins 112 which prevent the valve ball 111 from obstructing the valve channel leading to the flexible tube.
  • Two valves of this type are provided on the stopper of the suction flask, one of them being connected to the tube 24 while the other serves as a substitute valve in case the first valve is obstructed.
  • the substitute valve preferably is closed by a rubber cap when not in use.
  • a cleaning channel 114 is provided in the lower plate 2, said channel being closed by means of a rubber cap 115. By pushing a needle through. the cap 115 any firmly adhering impurities may be removed, thus preventing obstruction.
  • a suction pump for lifesaving purposes and the like comprising a reciprocating bellows, a first and a second opposing end wall secured to. the ends of said bellows and cooperating therewith to define an airtight expansible chamber, at least one compression spring mounted with each of its ends against one of said endwalls for automatic expansion of said bellows subsequent to each compression, said chamber comprising at least one suction port with an associated suction valve mounted therewith and at least one discharge port with an associated discharge-valve mounted therewith, and means cooperating With said first and second end walls to limit the expansion of said bellows below the maximum expansion of said spring whereby said spring is maintained under at least a minimum bias.
  • a suction pump as claimed in claim 1, wherein said means to limit the expansion of said bellows are stops disposed exteriorly of said bellows.
  • suctionpump as claimed in claim 1, further comprising at least one seat about each of said ports, a ball resting against each of said seats and a compression spring engaging each of said balls.
  • a suction pump as claimed in claim 1, wherein said means to limit the expansion of said bellows is in the form of a flexible connection mounted within 'said bellows with each of its ends attached to one of said opposing endwalls.
  • An aspirating apparatus for evacuating mixed fluids and for simultaneously separating non-gaseous substances therefrom comprising in combination a gravity operated fluid-pressure-tight vertical separator-container and suction means, said container comprising a tight top-colsure, an.
  • said suction means comprising a suction port, a suction line connecting said suction port with the interior of said container through said closure and a suctionvalve mounted in said suction line, said suction means further comprising a foot-operated fluid-pressure-tight compressible and expansible bellows-type vertical chamber provided with a pair of vertically spaced endwalls, a helical compression spring mounted within said bellows-type chamber vertically with its ends fixed one to each said endwall, a flexible connection mounted axially within said bellows-type vertical chamber and thehelix of said spring with.
  • said length of said connection being less than the distance between said endwalls under full expansion of saidspring to bias the force of said spring thereby limiting the expansion of said bellows-type vertical chamber, the latter being further provided with a discharge port having an exhaust valve mounted therein, and rigid guide means interposed between said container and said bellows-type chamber, said guide means extending to a point above the maximum expansion of said bellows-type chamber and above the top of said container, said guide means serving not only 7 to direct the foot or" the operator into contact with said bellows-type chamber but also serving as a guard to prevent accidental displacement of said container.
  • said suction means comprising a suction port, a suction line connecting said suction port with the interior of said container through said closure and a suction valve mounted in said suction line
  • said suction means further comprising a foot-operated fluid-pressuretight compressible and expansible bellows-type vertical chamber provided with a pair of vertically spaced endwalls, a helical compression spring mounted within said bellows-type chamber vertically with its ends fixed one to each said endwall, said bellows-type vertical chamber being further provided with a discharge port having an exhaust valve mounted therein, and rigid guide means interposed between said container and said be1lows-type chamber, said guide means extending to a point above the maximum expansion of said bellows-type chamber and above the top of said container, said guide means serving not only to direct the foot of the operator into contact with said bellows-type chamber but also serving as a guard to prevent accidental displacement of said container.

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Vascular Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • External Artificial Organs (AREA)
US642033A 1956-03-02 1957-02-25 Aspirating apparatus Expired - Lifetime US2947470A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE346979X 1956-03-02

Publications (1)

Publication Number Publication Date
US2947470A true US2947470A (en) 1960-08-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
US642033A Expired - Lifetime US2947470A (en) 1956-03-02 1957-02-25 Aspirating apparatus

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US (1) US2947470A (no)
BE (1) BE555331A (no)
CH (1) CH346979A (no)
DE (1) DE1063338B (no)
FR (1) FR1167167A (no)
GB (1) GB843345A (no)
NL (1) NL95211C (no)

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3068494A (en) * 1961-01-16 1962-12-18 Monroe Fabricators Inc Air pump for inflatable structures
US3068868A (en) * 1960-06-08 1962-12-18 Skopyk Joseph Poison extractor
US3084691A (en) * 1960-11-04 1963-04-09 Air Shields Aspirator
US3111145A (en) * 1959-05-29 1963-11-19 Kerns Homer Bellows pump for blood transfusions
US3164100A (en) * 1961-01-27 1965-01-05 Kelston Engineering Company Lt Fluid pumps
US3180566A (en) * 1963-03-07 1965-04-27 Murat & Associates Inc A Bellows type foot pump
US3316903A (en) * 1963-09-26 1967-05-02 Albert M Richards Inhalator
US3421504A (en) * 1966-01-25 1969-01-14 De Lamar J Gibbons Vacuum receptor
US3809087A (en) * 1973-05-17 1974-05-07 R Lewis Closed wound suction apparatus having biased plate members
US3841331A (en) * 1972-11-17 1974-10-15 J Wilder Suction-pump assembly for drawing body fluids
US4404924A (en) * 1980-09-05 1983-09-20 Uresil Company Body fluid suction device indicators
US4643719A (en) * 1984-07-19 1987-02-17 Garth Geoffrey C Manually operable aspirator
US4655690A (en) * 1983-07-21 1987-04-07 Lang Apparatebau Gmbh Bellows pump having adjustable stop cam for varying the stroke
US4718893A (en) * 1986-02-03 1988-01-12 University Of Minnesota Pressure regulated implantable infusion pump
US4772263A (en) * 1986-02-03 1988-09-20 Regents Of The University Of Minnesota Spring driven infusion pump
US4957487A (en) * 1988-12-30 1990-09-18 Baylor College Of Medicine External male urinary catheter and collection system
US4989370A (en) * 1989-07-17 1991-02-05 General Motors Corporation Programmed air leak for deflatable weatherstrip system
US4995196A (en) * 1989-07-17 1991-02-26 General Motors Corporation Programmed air leak for deflatable weatherstrip system
US5079873A (en) * 1989-07-17 1992-01-14 General Motors Corporation Programmed air leak for deflatable weatherstrip system
US5249968A (en) * 1991-04-17 1993-10-05 Actar, Inc. CPR manikin (piston)
US5885084A (en) * 1997-03-12 1999-03-23 Cpr Prompt, L.L.C. Cardiopulmonary resuscitation manikin
AT405854B (de) * 1997-07-22 1999-12-27 Franz Nagl Klomuschel-druckreiniger
US6780017B2 (en) 1998-09-21 2004-08-24 Cardiac Science, Inc. Cardiopulmonary resuscitation manikin with replaceable lung bag and installation tool
US20040238542A1 (en) * 2003-05-28 2004-12-02 Camp William P. Trash receptacle lid having a pumping apparatus
US20040238541A1 (en) * 2003-05-28 2004-12-02 Camp William P. Trash receptacle having a depressurization apparatus
FR2961561A1 (fr) * 2010-06-22 2011-12-23 Bosch Gmbh Robert Pompe a piston
US20120070812A1 (en) * 2009-05-28 2012-03-22 Enfavi, S.L. Device for simulating cardio-pulmonary resuscitation techniques
US8465293B2 (en) 2005-09-01 2013-06-18 Prestan Products Llc Medical training device
US20150148761A1 (en) * 2008-02-14 2015-05-28 Spiracur Inc. Devices and methods for treatment of damaged tissue
US9092995B2 (en) 2005-09-01 2015-07-28 Prestan Products Llc Medical training device
WO2017131930A3 (en) * 2016-01-30 2017-11-16 Iantech, Inc. Devices and methods for ocular surgery
US20180140754A1 (en) * 2015-06-02 2018-05-24 Primed Halberstadt Medizintechnik Gmbh Device for drainage, in particular for the drainage of a chronic subdural hematoma
US10603213B2 (en) 2017-05-04 2020-03-31 Carl Zeiss Meditec Cataract Technology Inc. Devices and methods for ocular surgery
US11241335B2 (en) 2019-02-01 2022-02-08 Carl Zeiss Meditec Cataract Technology Inc. Ophthalmic cutting instruments having integrated aspiration pump
US20230033238A1 (en) * 2021-08-02 2023-02-02 Nike, Inc. Pump for article of footwear or apparel
US11638660B2 (en) 2018-06-05 2023-05-02 Carl Zeiss Meditec Cataract Technology Inc. Ophthalmic microsurgical tools, systems, and methods of use
US11730625B2 (en) 2019-05-17 2023-08-22 Carl Zeiss Meditec Cataract Technology Inc. Ophthalmic cutting instruments having integrated aspiration pump
US11801163B2 (en) 2019-06-07 2023-10-31 Carl Zeiss Meditec Cataract Technology Inc. Multi-stage trigger for ophthalmology cutting tool

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3018779A (en) * 1959-07-28 1962-01-30 Tracy B Tyler Body cavity evacuating apparatus
DE1441911B1 (de) * 1961-10-27 1970-01-02 Mcelvenny Robert T Absaugvorrichtung fuer chirurgische Zwecke
US4047851A (en) * 1976-09-27 1977-09-13 Bender Machine Works, Inc. Bellows type expansible chamber pump having separate biasing means
GB1559382A (en) * 1976-11-12 1980-01-16 Hesse Ruth Lea Tracheal suction pump
CN103690197A (zh) * 2013-12-17 2014-04-02 鞍山钢铁集团公司总医院 支气管镜下呼吸道分泌物收集瓶
EP3295028A1 (de) * 2015-05-14 2018-03-21 Eberhard Timm GmbH Gerät zum absaugen von gasförmigen oder flüssigen medien
CN110898266A (zh) * 2019-12-31 2020-03-24 籍欣欣 一种心血管内科积液引流装置
CN111658832A (zh) * 2020-06-17 2020-09-15 布慧杰 一种感染科护理吸脓装置

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* Cited by examiner, † Cited by third party
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BE510339A (no) *
US286631A (en) * 1883-10-16 Apparatus for forcing liquids from barrels
US948115A (en) * 1908-01-28 1910-02-01 William B Mccourtie Apparatus for use in embalming.
US1095930A (en) * 1913-02-13 1914-05-05 Samuel P Sanders Bellows suction-pump.
US1209846A (en) * 1916-03-04 1916-12-26 Charles Edmund Kells Surgical cleansing apparatus.
US1341669A (en) * 1919-03-24 1920-06-01 United Mattress Machinery Comp Pump
US1349766A (en) * 1919-12-11 1920-08-17 Alma C Hunt Blood-removing and etherizing apparatus
US1382081A (en) * 1920-09-16 1921-06-21 Heiliger Paul Bellows
GB438404A (en) * 1935-03-11 1935-11-15 William Aldred Jarvis Improvements in compressors for refrigerators
GB551737A (en) * 1941-11-03 1943-03-08 P B Cow & Company Ltd A new or improved inflator for inflatable hollow bodies
US2816703A (en) * 1954-05-17 1957-12-17 Donald C Turner Pneumatic bellows

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* Cited by examiner, † Cited by third party
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CH31254A (de) * 1904-02-24 1905-03-15 Sondermann Dr Richard Vorrichtung zur Behandlung des menschlichen Körpers mittelst Saugens
US2397257A (en) * 1943-02-04 1946-03-26 Philip P Goland Surgical suction apparatus

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE510339A (no) *
US286631A (en) * 1883-10-16 Apparatus for forcing liquids from barrels
US948115A (en) * 1908-01-28 1910-02-01 William B Mccourtie Apparatus for use in embalming.
US1095930A (en) * 1913-02-13 1914-05-05 Samuel P Sanders Bellows suction-pump.
US1209846A (en) * 1916-03-04 1916-12-26 Charles Edmund Kells Surgical cleansing apparatus.
US1341669A (en) * 1919-03-24 1920-06-01 United Mattress Machinery Comp Pump
US1349766A (en) * 1919-12-11 1920-08-17 Alma C Hunt Blood-removing and etherizing apparatus
US1382081A (en) * 1920-09-16 1921-06-21 Heiliger Paul Bellows
GB438404A (en) * 1935-03-11 1935-11-15 William Aldred Jarvis Improvements in compressors for refrigerators
GB551737A (en) * 1941-11-03 1943-03-08 P B Cow & Company Ltd A new or improved inflator for inflatable hollow bodies
US2816703A (en) * 1954-05-17 1957-12-17 Donald C Turner Pneumatic bellows

Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111145A (en) * 1959-05-29 1963-11-19 Kerns Homer Bellows pump for blood transfusions
US3068868A (en) * 1960-06-08 1962-12-18 Skopyk Joseph Poison extractor
US3084691A (en) * 1960-11-04 1963-04-09 Air Shields Aspirator
US3068494A (en) * 1961-01-16 1962-12-18 Monroe Fabricators Inc Air pump for inflatable structures
US3164100A (en) * 1961-01-27 1965-01-05 Kelston Engineering Company Lt Fluid pumps
US3180566A (en) * 1963-03-07 1965-04-27 Murat & Associates Inc A Bellows type foot pump
US3316903A (en) * 1963-09-26 1967-05-02 Albert M Richards Inhalator
US3421504A (en) * 1966-01-25 1969-01-14 De Lamar J Gibbons Vacuum receptor
US3841331A (en) * 1972-11-17 1974-10-15 J Wilder Suction-pump assembly for drawing body fluids
US3809087A (en) * 1973-05-17 1974-05-07 R Lewis Closed wound suction apparatus having biased plate members
US4404924A (en) * 1980-09-05 1983-09-20 Uresil Company Body fluid suction device indicators
US4655690A (en) * 1983-07-21 1987-04-07 Lang Apparatebau Gmbh Bellows pump having adjustable stop cam for varying the stroke
US4643719A (en) * 1984-07-19 1987-02-17 Garth Geoffrey C Manually operable aspirator
US4718893A (en) * 1986-02-03 1988-01-12 University Of Minnesota Pressure regulated implantable infusion pump
US4772263A (en) * 1986-02-03 1988-09-20 Regents Of The University Of Minnesota Spring driven infusion pump
US4957487A (en) * 1988-12-30 1990-09-18 Baylor College Of Medicine External male urinary catheter and collection system
US4989370A (en) * 1989-07-17 1991-02-05 General Motors Corporation Programmed air leak for deflatable weatherstrip system
US4995196A (en) * 1989-07-17 1991-02-26 General Motors Corporation Programmed air leak for deflatable weatherstrip system
US5079873A (en) * 1989-07-17 1992-01-14 General Motors Corporation Programmed air leak for deflatable weatherstrip system
US5249968A (en) * 1991-04-17 1993-10-05 Actar, Inc. CPR manikin (piston)
US5885084A (en) * 1997-03-12 1999-03-23 Cpr Prompt, L.L.C. Cardiopulmonary resuscitation manikin
AT405854B (de) * 1997-07-22 1999-12-27 Franz Nagl Klomuschel-druckreiniger
US6780017B2 (en) 1998-09-21 2004-08-24 Cardiac Science, Inc. Cardiopulmonary resuscitation manikin with replaceable lung bag and installation tool
US20040238541A1 (en) * 2003-05-28 2004-12-02 Camp William P. Trash receptacle having a depressurization apparatus
US20040238542A1 (en) * 2003-05-28 2004-12-02 Camp William P. Trash receptacle lid having a pumping apparatus
US7481329B2 (en) * 2003-05-28 2009-01-27 Camp Jr William P Trash receptacle having a depressurization apparatus
US8465293B2 (en) 2005-09-01 2013-06-18 Prestan Products Llc Medical training device
US9092995B2 (en) 2005-09-01 2015-07-28 Prestan Products Llc Medical training device
US20150148761A1 (en) * 2008-02-14 2015-05-28 Spiracur Inc. Devices and methods for treatment of damaged tissue
US9895471B2 (en) * 2008-02-14 2018-02-20 Kci Licensing, Inc. Devices and methods for treatment of damaged tissue
US20120070812A1 (en) * 2009-05-28 2012-03-22 Enfavi, S.L. Device for simulating cardio-pulmonary resuscitation techniques
FR2961561A1 (fr) * 2010-06-22 2011-12-23 Bosch Gmbh Robert Pompe a piston
US11065370B2 (en) * 2015-06-02 2021-07-20 Primed Halberstadt Medizintechnik Gmbh Device for drainage, in particular for the drainage of a chronic subdural hematoma
US20180140754A1 (en) * 2015-06-02 2018-05-24 Primed Halberstadt Medizintechnik Gmbh Device for drainage, in particular for the drainage of a chronic subdural hematoma
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Also Published As

Publication number Publication date
CH346979A (de) 1960-06-15
GB843345A (en) 1960-08-04
DE1063338B (de) 1959-08-13
FR1167167A (fr) 1958-11-21
NL95211C (no) 1900-01-01
BE555331A (no) 1900-01-01

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