US3799702A - Apparatus for draining blood from a surgical wound and transmission to a heart-lung machine - Google Patents

Apparatus for draining blood from a surgical wound and transmission to a heart-lung machine Download PDF

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Publication number
US3799702A
US3799702A US00306937A US30693772A US3799702A US 3799702 A US3799702 A US 3799702A US 00306937 A US00306937 A US 00306937A US 30693772 A US30693772 A US 30693772A US 3799702 A US3799702 A US 3799702A
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Prior art keywords
pump
tube
underpressure
pressure sensor
suction
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Expired - Lifetime
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US00306937A
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English (en)
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E Weishaar
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    • 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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/1253—Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing
    • F04B43/1292—Pumps specially adapted for several tubular flexible members
    • 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
    • A61M1/74—Suction control
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/022—Stopping, starting, unloading or idling control by means of pressure
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery pressure
    • 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
    • A61M1/74—Suction control
    • A61M1/75—Intermittent or pulsating suction

Definitions

  • ABSTRACT A pressure sensor is connected to the suction tube of an apparatus for draining blood from a wound and supplying it to a heart-lung machine. Means, which may be either a separate pump or the pump connected to the tube for pumping blood, forms an underpressure generator.
  • the pressure sensor is responsive to a first underpressure in the tube for increasing the pumping action of the suction pump motor, and to ambient pressure for decreasing the pumping action of the pump motor,
  • the sensor may also be responsive to a greater underpressure for stopping or reversing the 9 Claims, 2 Drawing Figures APPARATUS FOR DRAINING BLOOD FROM A SURGICAL WOUND AND TRANSMISSION TO A HEART-LUNG MACHINE BACKGROUND OF THE INVENTION
  • the invention relates to an apparatus for draining blood from a surgical wound and the transmission of this blood to a heart-lung machine and is particularly directed to apparatus of this type which employs a suction tube adapted to connect the wound with a suction pump.
  • the above objects are achieved by providing a suction tube coupled to a weakly acting underpressure generator and to a pressure sensor.
  • the pressure sensor upon discerning a predetermined first pressure drop due to the blood level rising above the mouth of the suction tube is connected to switch the suction pump on for a gradual speed-up.
  • the suction pump Upon discerning a second predetermined higher underpressure value, the suction pump is switched off and connects the suction tube to atmospheric pressure.
  • the pump is switched off.
  • the suction pump is immediately shut off as soon as the blood level falls below the mouth of the suction tube such that the above mentioned air entrainment cannot take place.
  • the underpressure generator and the pressure sensor continually monitor the blood level, thereby assuring the drainage of blood as soon as the blood level rises sufficiently, while also monitoring if the suction tube has sucked itself onto a body organ. This, to be sure, can also happen during normal blood drainage, e. g. due to displacement of the suction tube and sudden attachment to a body organ.
  • the underpressure generator can be a small separate machine or alternatively the suction pump itself may be used for this purpose, in which case it is set to a lower output mode of operation.
  • connection of the tube to atmospheric pressure may be effected in various ways.
  • the suction tube may be provided with a valve connecting the tube to the ambient atmosphere by automatically opening as soon as the second predetermined underpressure value is reached.
  • the suction pump may be employed for this purpose by setting it for a lim ited time on pressure operation. In this case the mouth of the suction tube will automatically free itself from any part of the body to which it may have attached itself by suction.
  • FIG. 2 illustrates an arrangement employing a separate small machine as an underpressure generator, in.
  • a suction tube 1 is inserted into a wound via the elbow 2.
  • the blood level in the wound is indicated by a wavy line 3.
  • the suction tube 1 is connected to a suction pump 5 in a heart-lung machine 4, and the blood is pumped from pump 5 to other not illustrated components of the heart-lung machine.
  • a so called rollerpump is used, in which two rollers 6 and 7 supported by an arm 20, rotate about the dashed line axis 8, thereby squeezing the elastic suction tube 1.
  • roller 6 squeezes the blood that is contained in the suction tube ahead of it in a forward direction, at the same time sucking blood behind itself until it arrives at the position occupied by the roller 7 as illustrated. Then the roller 7, which has now reached the position which roller 6 previously occupied, repeats the same action. Both rollers are driven via the shaft 8 (not shown) on the axis by the motor 9.
  • the roller pump 5 not only serves the purpose of draining the blood from the wound, but also serves as underpressure generator. In serving as underpressure,
  • a pressure sensor 10 is provided in order to monitor these actions.
  • the pressure sensor 10 responds as soon as an underpressure of about mm water column is attained, thereby. actuating the electronic control unit 11 which in turn then effects a gradual speed-up of the motor 9.
  • the gradual speed-up of the motor is controlled by a conventional electronic delay element in the control unit 11.
  • the roller pump 5 is now on a suction mode of operation, whereby an underpressure of up to 50 cm water column may be produced. From now on the blood reaching the tube mouth 12 will be continually drained off.
  • the pressure sensor is provided with a second threshold value at a higher underpressure, e. g. at 100 cm water column.
  • a second threshold value at a higher underpressure, e. g. at 100 cm water column.
  • the pressure sensor Upon reaching the second threshold value the pressure sensor will activate the electronic unit 11, which in turn shuts off the motor 9 andcauses the pressure in the suction tube to rise to atmospheric pressure, thereby facilitating removal of the tube mouth 12 from the body part.
  • This procedure is initiated by reversing the direction of rotation of the motor 9 by the electronic device 11, thereby causing the roller pump 5, by turning in the reverse direction to that indicated by the arrow in the illustration, to produce pressure in the suction tube 1.
  • the tube mouth 12 will detach itself or may easily be removed from the body organ.
  • FIG. 2 containsseveral of the same elements as in FIG. 1, which therefore carry the same reference indices.
  • a separate suction pump 13 is provided as underpressure generator. This pump is connected to the suction tube via the check valve 14.
  • the suction pump 13 runs continuously, thus providing instantaneous effectiveness as soon as the blood level 3 falls below the tube mouth 12.
  • the suction pump 13 When the blood level 3 rises again the suction pump 13 generates the above underpressure, which, upon reaching the first threshold value, activates the pressure sensor.
  • the latter then, via the electronic unit 11, turns on the motor 9, which then drives the roller pump in the above described manner for the blood draining operation.
  • the higher underpressure in the suction tube created thereby cannot influence the suction pump 13, because now the check valve 14 effectively separates the suction pump 13 from the suction tube 1.
  • valve 15 Transmission of atmospheric pressure to the suction tube 1 in the case of closure of the tube mouth 12 by some body part is provided via the valve 15.
  • the latter is opened by the electronic unit 11 when the underpressure in the suction tube 1 has risen to the second threshold value of the pressure sensor 10. Opening of the valve 15 allows air to enter the suction tube 1, thus permitting the tube mouth 12 to be easily removed or to detach itself from a body organ.
  • valves 14 and 15 may be combined in a two-way control valve. It is also feasible in the arrangement of FIG. 2 to have the pump 5 reverse direction of rotation in order to generate atmospheric pressure in the suction tube 1 as has been described in reference to FIG. 1. It may, however, be pointed out that the separate underpressure generator pump provides the advantage of allowing the roller pump 5 to stand still as long as the blood level 3 is below the tube mouth 12, thereby eliminating any manipulation of the blood contained in the roller pump 5 during this phase of operation.
  • An apparatus for draining blood from a surgical wound and transporting this blood to a heart-lung machine by means of a suction tube connected to a suction pump comprising weakly acting underpressure generator means, a pressure sensor, means for connecting said suction tube to said underpressure generator means and to said pressure sensor, means for connecting said pressure sensor to said pump for controlling the latter, said pressure sensor being further responsive to a predetermined first underpressure threshold value due to a rise of the blood level above the mouth of the tube for gradually starting up the suction pump, said pressure sensor being responsive to a second higher underpressure value for turning off the suction pump and transmitting atmospheric pressure to the suction tube, said pressure sensor being further responsive to the disappearance of the underpressure due to the blood level dropping below the suction tube mouth for shutting the pump off.
  • said underpressure generator means comprises said suction pump, being automatically set to low operating mode of operation.
  • the apparatus according to claim 1, comprising a valve for connecting said suction tube to ambient, atmospheric pressure and means for connecting said valve to said pressure sensor for opening the valve in response to the occurence in said tube of a second underpressure value.
  • the apparatus includes a suction tube, a pump connected to the suction tube, and a motor connected to operate the pump, the improvement comprising pressure sensing means connected to sense pressure in said tube for controlling said motor, said pressure sensor being responsive to a first underpressure for controlling said motor to increase the pumping action of said pump, said pressure sensor further being responsive to ambient pressure for controlling said motor to decrease the pumping action of said pump, and means for producing an underpressure in said tube.
  • said means for producing an underpressure comprises a second pump connected to said tube.
  • An automatic system for draining fluids comprising a suction tube, a pump connected to said tube, a motor connected to operate said pump, a pressure sensor connected to control said motor in response to the pressure in said tube, and underpressure generating means for reducing pressure in said tube, said pressure sensor being responsive to a first underpressure for controlling said motor to increase the pumping action of said pump, said pressure sensor being further responsive to ambient pressure in said tube for controlling said motor to decrease the pumping action of said pump.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • External Artificial Organs (AREA)
US00306937A 1971-02-24 1972-11-15 Apparatus for draining blood from a surgical wound and transmission to a heart-lung machine Expired - Lifetime US3799702A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2108757A DE2108757C3 (de) 1971-02-24 1971-02-24 Vorrichtung zur Blutabsaugung aus einer Operationswunde und Zuführung zu einer Herz-Lungen-Maschine

Publications (1)

Publication Number Publication Date
US3799702A true US3799702A (en) 1974-03-26

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US00306937A Expired - Lifetime US3799702A (en) 1971-02-24 1972-11-15 Apparatus for draining blood from a surgical wound and transmission to a heart-lung machine

Country Status (4)

Country Link
US (1) US3799702A (en, 2012)
DE (1) DE2108757C3 (en, 2012)
FR (1) FR2196817B1 (en, 2012)
NL (1) NL7211427A (en, 2012)

Cited By (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882861A (en) * 1973-09-24 1975-05-13 Vital Assists Auxiliary control for a blood pump
US3896803A (en) * 1973-08-20 1975-07-29 Betamite Electronic Devices Valve controlled single needle blood processing systems
US3918453A (en) * 1974-07-01 1975-11-11 Baxter Laboratories Inc Surgical suction device
US3949734A (en) * 1974-07-22 1976-04-13 Miles Lowell Edwards Fluid pump control system
US3955574A (en) * 1974-12-09 1976-05-11 Rubinstein Morton K Pumping system for catheter suction units
US3993054A (en) * 1975-06-19 1976-11-23 Stryker Corporation Therapeutic lavage
DE2535650A1 (de) * 1975-08-09 1977-02-10 Fresenius Chem Pharm Ind Vorrichtung zum foerdern einer fluessigkeit in schlauchsystemen, insbesondere blut in extrakorporalen kreislaeufen, mittels einer schlauchpumpe, insbesondere einer rollenpumpe
US4062360A (en) * 1976-04-02 1977-12-13 Bentley Laboratories, Inc. Atraumatic fluid handling method and apparatus
US4168707A (en) * 1977-06-13 1979-09-25 Douvas Nicholas G Control apparatus for microsurgical instruments
US4242051A (en) * 1979-02-22 1980-12-30 Knight Equipment Corp. Feed control system for pumping fluids to dishwashers and the like
US4270884A (en) * 1978-11-10 1981-06-02 Ferakarn Limited Waste gas recovery system
US4273514A (en) * 1978-10-06 1981-06-16 Ferakarn Limited Waste gas recovery systems
US4277226A (en) * 1979-03-09 1981-07-07 Avi, Inc. IV Pump with empty supply reservoir and occlusion detector
US4424053A (en) 1981-08-05 1984-01-03 Bioresearch Inc. Disposable autotransfusion device
US4460355A (en) * 1982-06-11 1984-07-17 Ivac Corporation Fluid pressure monitoring system
US4468170A (en) * 1980-07-11 1984-08-28 Beta Technology, Inc. Low level indicator
US4551131A (en) * 1983-05-02 1985-11-05 Thoratec Laboratories Corporation Autotransfusion system with anticoagulant delivery system
GB2166520A (en) * 1984-11-02 1986-05-08 Bioresearch Inc Suction regulator
US4590951A (en) * 1983-06-07 1986-05-27 Racal Safety Limited Breathing apparatus
US4702675A (en) * 1984-08-07 1987-10-27 Hospal A.G. Peristaltic pump provided with a pressure measurement device
JPS63186661A (ja) * 1987-01-28 1988-08-02 シャープ株式会社 輸液注入ポンプのチュ−ブ閉塞監視装置
JPS63189163A (ja) * 1987-01-30 1988-08-04 シャープ株式会社 輸液注入ポンプのチュ−ブ閉塞監視装置
JPS63192451A (ja) * 1987-02-04 1988-08-09 シャープ株式会社 輸液注入ポンプのチュ−ブ閉塞監視装置
US4882575A (en) * 1987-01-28 1989-11-21 Sharp Kabushiki Kaisha Monitor for blocked condition in tube for fluid infusion pump
US4888003A (en) * 1988-02-29 1989-12-19 Johnson Gerald W Vacuum apparatus
US5320503A (en) * 1988-05-17 1994-06-14 Patient Solutions Inc. Infusion device with disposable elements
EP0596314A3 (de) * 1992-11-06 1994-12-28 Grieshaber & Co Ag Ophthalmologisches Aspirations- und Irrigationssystem.
US5584667A (en) * 1988-05-17 1996-12-17 Davis; David L. Method of providing uniform flow from an infusion device
US5645540A (en) * 1994-10-11 1997-07-08 Stryker Corporation Blood conservation system
WO1998010810A1 (en) * 1996-09-16 1998-03-19 Minnesota Mining And Manufacturing Company Blood aspirator
US5730731A (en) * 1988-04-28 1998-03-24 Thomas J. Fogarty Pressure-based irrigation accumulator
US5803712A (en) * 1988-05-17 1998-09-08 Patient Solutions, Inc. Method of measuring an occlusion in an infusion device with disposable elements
EP0866725A4 (en) * 1995-10-20 1999-06-02 Harvest Technologies Llc SYSTEM FOR COLLECTING BLOOD WITHOUT DAMAGING IT
EP0959909A4 (en, 2012) * 1995-04-11 1999-12-01
US6325422B1 (en) 1995-10-20 2001-12-04 Harvest Technologies Corporation Filter bag and connector cartridge
US6336924B1 (en) * 1997-12-17 2002-01-08 Nmt Neurosciences Implants S.A. External biological fluid drainage device
US6517512B1 (en) * 1996-11-11 2003-02-11 Cardiosmart Sa Heart lung machine suction device with sensor
US20050019185A1 (en) * 2003-07-25 2005-01-27 Otis David R. Peristaltic pump with roller pinch valve control
US20080023005A1 (en) * 2004-07-16 2008-01-31 Shuichi Tokunaga Intra-Tracheal Sputum Aspirating Apparatus
US20080071234A1 (en) * 2006-09-19 2008-03-20 Kelch Randall P Reduced pressure treatment system having blockage clearing and dual-zone pressure protection capabilities
US7927319B2 (en) 2007-02-20 2011-04-19 Kci Licensing, Inc. System and method for distinguishing leaks from a disengaged canister condition in a reduced pressure treatment system
US8366690B2 (en) 2006-09-19 2013-02-05 Kci Licensing, Inc. System and method for determining a fill status of a canister of fluid in a reduced pressure treatment system
US8366691B2 (en) 2008-08-08 2013-02-05 Kci Licensing, Inc Reduced-pressure treatment systems with reservoir control
US8409170B2 (en) 2007-02-09 2013-04-02 Kci Licensing, Inc. System and method for managing reduced pressure at a tissue site
EP2959927A1 (de) 2014-06-26 2015-12-30 Medela Holding AG Vorrichtung zur Absaugung und Weiterleitung von Blut

Families Citing this family (6)

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WO1982000956A1 (en) * 1980-09-12 1982-04-01 Gay C Pump intended to provide blood circulation
US4529106A (en) * 1982-09-02 1985-07-16 Broadfoot John T Metering and/or feeding unit for fluid materials
AU1139583A (en) * 1982-02-25 1983-09-01 John T. Broadfoot Peristaltic pump
US4540301A (en) * 1983-12-16 1985-09-10 Swanson Dennis E Apparatus for applying liquid coatings
US4798583A (en) * 1984-11-16 1989-01-17 Walter Beck Method and apparatus for aspirating secreted fluids from a wound
DE3441893A1 (de) * 1984-11-16 1986-05-28 Walter Küsnacht Beck Verfahren und vorrichtung zum absaugen von sekretfluessigkeit aus einer wunde

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US3457865A (en) * 1967-03-20 1969-07-29 Robert B Dunlap Control apparatus
US3565076A (en) * 1968-05-22 1971-02-23 Daniel A Kadan Evacuator system and apparatus

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FR662878A (fr) * 1928-10-24 1929-08-13 Dispositif permettant d'établir une circulation de sang ou de liquides analogues
FR790517A (fr) * 1934-05-25 1935-11-22 Perfectionnements apportés aux appareils physiologiques et médicaux, notamment à ceux pour insufflations de fluide
FR1054354A (fr) * 1952-01-25 1954-02-10 Générateur de vide transportable avec réservoir et commande automatique
FR2109312A5 (en, 2012) * 1970-10-12 1972-05-26 Rhone Poulenc Sa

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
US3457865A (en) * 1967-03-20 1969-07-29 Robert B Dunlap Control apparatus
US3565076A (en) * 1968-05-22 1971-02-23 Daniel A Kadan Evacuator system and apparatus

Cited By (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896803A (en) * 1973-08-20 1975-07-29 Betamite Electronic Devices Valve controlled single needle blood processing systems
US3882861A (en) * 1973-09-24 1975-05-13 Vital Assists Auxiliary control for a blood pump
US3918453A (en) * 1974-07-01 1975-11-11 Baxter Laboratories Inc Surgical suction device
US3949734A (en) * 1974-07-22 1976-04-13 Miles Lowell Edwards Fluid pump control system
US3955574A (en) * 1974-12-09 1976-05-11 Rubinstein Morton K Pumping system for catheter suction units
US3993054A (en) * 1975-06-19 1976-11-23 Stryker Corporation Therapeutic lavage
DE2535650A1 (de) * 1975-08-09 1977-02-10 Fresenius Chem Pharm Ind Vorrichtung zum foerdern einer fluessigkeit in schlauchsystemen, insbesondere blut in extrakorporalen kreislaeufen, mittels einer schlauchpumpe, insbesondere einer rollenpumpe
US4062360A (en) * 1976-04-02 1977-12-13 Bentley Laboratories, Inc. Atraumatic fluid handling method and apparatus
US4168707A (en) * 1977-06-13 1979-09-25 Douvas Nicholas G Control apparatus for microsurgical instruments
US4273514A (en) * 1978-10-06 1981-06-16 Ferakarn Limited Waste gas recovery systems
US4270884A (en) * 1978-11-10 1981-06-02 Ferakarn Limited Waste gas recovery system
US4242051A (en) * 1979-02-22 1980-12-30 Knight Equipment Corp. Feed control system for pumping fluids to dishwashers and the like
US4277226A (en) * 1979-03-09 1981-07-07 Avi, Inc. IV Pump with empty supply reservoir and occlusion detector
US4468170A (en) * 1980-07-11 1984-08-28 Beta Technology, Inc. Low level indicator
US4424053A (en) 1981-08-05 1984-01-03 Bioresearch Inc. Disposable autotransfusion device
US4460355A (en) * 1982-06-11 1984-07-17 Ivac Corporation Fluid pressure monitoring system
US4551131A (en) * 1983-05-02 1985-11-05 Thoratec Laboratories Corporation Autotransfusion system with anticoagulant delivery system
US4590951A (en) * 1983-06-07 1986-05-27 Racal Safety Limited Breathing apparatus
US4702675A (en) * 1984-08-07 1987-10-27 Hospal A.G. Peristaltic pump provided with a pressure measurement device
GB2166520A (en) * 1984-11-02 1986-05-08 Bioresearch Inc Suction regulator
JPS63186661A (ja) * 1987-01-28 1988-08-02 シャープ株式会社 輸液注入ポンプのチュ−ブ閉塞監視装置
US4882575A (en) * 1987-01-28 1989-11-21 Sharp Kabushiki Kaisha Monitor for blocked condition in tube for fluid infusion pump
JPS63189163A (ja) * 1987-01-30 1988-08-04 シャープ株式会社 輸液注入ポンプのチュ−ブ閉塞監視装置
JPS63192451A (ja) * 1987-02-04 1988-08-09 シャープ株式会社 輸液注入ポンプのチュ−ブ閉塞監視装置
US4888003A (en) * 1988-02-29 1989-12-19 Johnson Gerald W Vacuum apparatus
US5730731A (en) * 1988-04-28 1998-03-24 Thomas J. Fogarty Pressure-based irrigation accumulator
US5803712A (en) * 1988-05-17 1998-09-08 Patient Solutions, Inc. Method of measuring an occlusion in an infusion device with disposable elements
US6312227B1 (en) 1988-05-17 2001-11-06 I-Flow Corp. Infusion device with disposable elements
US20080015506A1 (en) * 1988-05-17 2008-01-17 Davis David L Infusion device with disposable elements
US5320503A (en) * 1988-05-17 1994-06-14 Patient Solutions Inc. Infusion device with disposable elements
US20050013698A1 (en) * 1988-05-17 2005-01-20 Davis David Lyle Infusion device with disposable elements
US6742992B2 (en) 1988-05-17 2004-06-01 I-Flow Corporation Infusion device with disposable elements
US5584667A (en) * 1988-05-17 1996-12-17 Davis; David L. Method of providing uniform flow from an infusion device
US6146109A (en) * 1988-05-17 2000-11-14 Alaris Medical Systems, Inc. Infusion device with disposable elements
EP0596314A3 (de) * 1992-11-06 1994-12-28 Grieshaber & Co Ag Ophthalmologisches Aspirations- und Irrigationssystem.
US5645540A (en) * 1994-10-11 1997-07-08 Stryker Corporation Blood conservation system
US5830198A (en) * 1994-10-11 1998-11-03 Stryker Corporation Blood conservation system
EP0959909A4 (en, 2012) * 1995-04-11 1999-12-01
US6325422B1 (en) 1995-10-20 2001-12-04 Harvest Technologies Corporation Filter bag and connector cartridge
US6342048B1 (en) 1995-10-20 2002-01-29 Harvest Technologies Corporation System for collection of blood without damage
US6663586B2 (en) * 1995-10-20 2003-12-16 Harvest Technologies Corporation System for collection of blood without damage
EP0866725A4 (en) * 1995-10-20 1999-06-02 Harvest Technologies Llc SYSTEM FOR COLLECTING BLOOD WITHOUT DAMAGING IT
US5984892A (en) * 1996-09-16 1999-11-16 Minnesota Mining And Manufacturing Company Blood aspirator
WO1998010810A1 (en) * 1996-09-16 1998-03-19 Minnesota Mining And Manufacturing Company Blood aspirator
US6517512B1 (en) * 1996-11-11 2003-02-11 Cardiosmart Sa Heart lung machine suction device with sensor
US6336924B1 (en) * 1997-12-17 2002-01-08 Nmt Neurosciences Implants S.A. External biological fluid drainage device
US20050019185A1 (en) * 2003-07-25 2005-01-27 Otis David R. Peristaltic pump with roller pinch valve control
US7140850B2 (en) * 2003-07-25 2006-11-28 Hewlett-Packard Development Company, L.P. Peristaltic pump with roller pinch valve control
US20080023005A1 (en) * 2004-07-16 2008-01-31 Shuichi Tokunaga Intra-Tracheal Sputum Aspirating Apparatus
US20080071234A1 (en) * 2006-09-19 2008-03-20 Kelch Randall P Reduced pressure treatment system having blockage clearing and dual-zone pressure protection capabilities
US7758555B2 (en) * 2006-09-19 2010-07-20 Kci Licensing, Inc. Reduced pressure treatment system having blockage clearing and dual-zone pressure protection capabilities
US20100268179A1 (en) * 2006-09-19 2010-10-21 Kelch Randall P Reduced pressure treatment system having blockage clearing and dual-zone pressure protection capabilities
US8328776B2 (en) 2006-09-19 2012-12-11 Kci Licensing, Inc. Reduced pressure treatment system having blockage clearing and dual-zone pressure protection capabilities
US8366690B2 (en) 2006-09-19 2013-02-05 Kci Licensing, Inc. System and method for determining a fill status of a canister of fluid in a reduced pressure treatment system
US8409170B2 (en) 2007-02-09 2013-04-02 Kci Licensing, Inc. System and method for managing reduced pressure at a tissue site
US7927319B2 (en) 2007-02-20 2011-04-19 Kci Licensing, Inc. System and method for distinguishing leaks from a disengaged canister condition in a reduced pressure treatment system
US8827967B2 (en) 2007-02-20 2014-09-09 Kci Licensing, Inc. System and method for distinguishing leaks from a disengaged canister condition in a reduced pressure treatment system
US8366691B2 (en) 2008-08-08 2013-02-05 Kci Licensing, Inc Reduced-pressure treatment systems with reservoir control
EP2959927A1 (de) 2014-06-26 2015-12-30 Medela Holding AG Vorrichtung zur Absaugung und Weiterleitung von Blut
WO2015197463A1 (de) 2014-06-26 2015-12-30 Medela Holding Ag Vorrichtung zur absaugung und weiterleitung von blut
US10617798B2 (en) 2014-06-26 2020-04-14 Medela Holding Ag Device for aspirating and transferring blood

Also Published As

Publication number Publication date
FR2196817B1 (en, 2012) 1976-10-29
DE2108757A1 (de) 1972-09-07
DE2108757B2 (de) 1973-06-20
DE2108757C3 (de) 1974-01-17
NL7211427A (en, 2012) 1974-02-25
FR2196817A1 (en, 2012) 1974-03-22

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