US3683913A - Underwater drainage apparatus with air flow meters - Google Patents

Underwater drainage apparatus with air flow meters Download PDF

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Publication number
US3683913A
US3683913A US78129A US7812970A US3683913A US 3683913 A US3683913 A US 3683913A US 78129 A US78129 A US 78129A US 7812970 A US7812970 A US 7812970A US 3683913 A US3683913 A US 3683913A
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United States
Prior art keywords
chamber
column
cavity
air flow
fluid communication
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Expired - Lifetime
Application number
US78129A
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English (en)
Inventor
Leonard Kurtz
Robert Bidwell
Sidney Mishkin
Edward Hallstein
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.)
MTG Divestitures LLC
Sanofi Biosurgery Inc
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Deknatel Inc
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Application filed by Deknatel Inc filed Critical Deknatel Inc
Priority to US78129A priority Critical patent/US3683913A/en
Priority to CA095,808A priority patent/CA943423A/en
Priority to GB5177770A priority patent/GB1335849A/en
Priority to FR7042370A priority patent/FR2105742A5/fr
Priority to JP7111879A priority patent/JPS5233439B1/ja
Priority to DE2148331A priority patent/DE2148331C3/de
Application granted granted Critical
Publication of US3683913A publication Critical patent/US3683913A/en
Priority to AU14188/76A priority patent/AU498110B2/en
Assigned to PFIZER HOSPITAL PRODUCTS GROUP INC. reassignment PFIZER HOSPITAL PRODUCTS GROUP INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: HOWMEDICA, INC.
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    • 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
    • A61M1/60—Containers for suction drainage, adapted to be used with an external suction source
    • A61M1/61—Two- or three-bottle systems for underwater drainage, e.g. for chest cavity drainage

Definitions

  • An underwater drainage apparatus for evacuating fluids from body cavities and comprises an integrally formedcollection chamber, underwater seal chamber and a pressure regulating manometer chamber. Air flow meters are, provided.
  • Another problem which has arisen in connection with the use of underwater drainage apparatus is in providing means which will permit the patient to develop high negativity in the pleural cavity when such condition is necessary for the patients breathing efforts. That is to say, if there is a blockage in the patients bronchial tubes, the patient must make a strong respiratory effort in order to expand the lungs and permit air to flow around this blockage into the lung cavity. In doing this the rib cage is expanded so as to produce a very high negativity in the pleural cavity.
  • prior types of underwater drainage apparatus will defeat such respiratory efforts by permitting the air to be drawn back into the pleural cavity from the drainage apparatus.
  • air flow meters in the underwater seal and in the pressure regulator manometer, these meters being of an improved design to provide a more accurate means of measuring air flow through the water seal and through the pressure regulator manometer.
  • Disposed above the downwardly extending passageway is a series of chambers having apertures therein to permit the passage of air upwardly there through.
  • the first chamber and aperture for passage of air through the flow meter is located directly above the point at which air enters the meter. Thus, the first air flow through the meter will always pass through the first chamber and aperture of the air flow meter.
  • the air'bubbles must pass along the downwardly extending passageway and as these bubbles are constantly seeking to rise through the liquid they will pass upwardly through the next chamber and aperture in the sequence of passageways through the air flow meter.
  • Means are provided in the air flow meter for maintaining the bubbles in alignment with the passageways which they pass through so that the number of passageways through which gasses are passing can be readily determined. In this manner the gas flow through the underwater seal and through the pressure regulator manometer may be accurately determined.
  • a cylinder valve which is normally open to permit the passage of gasses from the pleural cavity through the underwater seal.
  • the cylinder valve is so designed that it will move to the closed position in response to hydraulic pressure but will not be moved from its open position in response to the passage of gasses through the passageway interconnecting the collection chamber and the underwater seal nor will it close due to differences in gas pressures within the passageway.
  • FIG. 1 is a sectional view through the center plane of an underwater drainage apparatus constructed according to the present invention.
  • FIG. 2 is a sectional view along the lines 22 of FIG. 1.
  • FIG. 3 is a perspective view of the valve and the casing for the valve.
  • FIG. 4 is a sectional view along the lines 4--4 of FIG. 1.
  • FIG. 5 is a perspective view of the air flow meter.
  • FIG. 6 is a top plan view of the air flow meter shown in FIG. 5.
  • FIG. 7 is a sectional view along the lines 77 of FIG. 5.
  • the apparatus may be formed from two separate sections, one section being molded with all of the chambers and walls formed therein and the other section being a flat sheet which is secured to the first section along all walls.
  • the apparatus could be molded in two separate halves, the mold for each half being identical with the halves joined together along the center plane.
  • FIG. 1 there is shown an improved underwater drainage apparatus and having a collection or trap chamber 11, an underwater seal chamber 12 comprising a first column 12a and a second column 12b.
  • a pressure regulator chamber 13 having a first column 13a and a second column formed in two portions 13b and 13c.
  • the apparatus is completely enclosed except for an opening 14 from the collection chamber 11 which opening is adapted to be connected to the pleural cavity of the patient, an opening 15 adapted to be connected to a vacuum source and an opening 16 which is open to atmosphere from the pressure regulator chamber 13.
  • One feature of the present invention is the provision of a pediatric collection compartment which is formed by a partition 20 in the main collection chamber 11.
  • the angled upper end portion 20a of the partition 20 reflects the liquid entering through opening 14 into the pediatric collection compartment 21.
  • the compartment 21 is of a relatively small cross section so that the amounts of liquid collecting therein can be readily measured in increments of one cubic centimeter. In a preferred embodiment of the invention this compartment will hold 250 cubic centimeters after which additional liquid will flow over the upper end portion 20a of the partition 20 into the adjacent chamber 22 and when chamber 22 is filled the liquid will flow over the upper end of partition 23 into compartment 24.
  • the partitions 20 and 23 are formed by the walls of that portion of the unit in which the chambers are formed being secured directly to the back face of the flat member 25 forming the other portion of the unit.
  • the underwater seal chamber 12 is formed with columns 12a and 12b, these columns being separated by a partition element 26 which is formed as shown in FIG. 2 by securing wall portion 26 directly to the flat member 25.
  • a means for preventing the water forming the underwater seal from rising in column 12b comprises a cylindrical check valve 37 the structure of which is more clearly shown in FIG. 3.
  • a chamber 38 which is offset with respect to column 12b and this chamber has a lower wall 39 and an upper wall 40 having an aperture 41 therein.
  • the edge 42 of the upper wall 40 and the side edges 43 and 44 of chamber 38 are secured directly to the rear face of member 25 so that only entry into chamber 38 is through column 12b and through aperture 41.
  • a cylindrical valve member 45 having a height slightly less than the length of the chamber 38 as shown more clearly in FIG. 1. Normally the valve 45 rests on the bottom 39 of chamber 38.
  • valve 45 floats and rises within chamber 38 to close off aperture 41, thuspreventing the liquid from the water seal from rising into chamber 35.
  • the high negative pressure which the patient has built up in the pleural cavity which the patient may require in order to fully expand the lung is permitted to be maintained.
  • the water within chamber 38 returns to the water seal at the lower end of column 12 b, thus permitting the valve 45 to return to its position on the bottom wall 39 and normal operation of the device is resumed. It has been found that scoring lines (not shown) across the upper surface of valve 45 prevents the valve from sticking in the upper position closing off aperture 41.
  • the air flow meter measures the amount of air passing from the pleural cavity through the opening 14 into the collection chamber 11 and downwardly through column 12b and upwardly through column 12a to the vacuum pump.
  • the air flow meter provides means for accurately measuring the quantity of air passing through the underwater seal and for conveniently determining whether this air flow is increasing or decreasing. This determination would be significant for diagnosing a patients condition suffering, for example, from a bronchopleural fistula.
  • the details of construction of the air flow meter are shown in greater detail in FIG. 5 to 7 inclusive.
  • the meter is provided with a rear wall 47 and a front wall 48 having a common duct or passageway 49 formed therein.
  • Front wall 48 and rear wall 47 have an integral connecting portion 50 which forms the upper wall of passageway 49.
  • Connecting portion 50 has a series of apertures 51a, 5lb...5li and beneath each of these apertures there is formed in portion 50 a separate and independent plenum chamber 52.
  • the lower end of each plenum chamber connects with the common passageway 49.
  • a partition member 53 Disposed above and separating each of the apertures 51a, 51b....51i is a partition member 53.
  • the air flow meter 46 is disposed within the underwater seal chamber at the lower end thereof between the columns 12a and 12b with the duct 49 extending at a slight angle to the horizontal.
  • the lower wall of duct 49 is cut away beneath the aperture 51i and its plenum chamber 52 so that this passageway is disposed in the path of flow and directly above passageway 12e forming the end of the curved end portion of column 12b.
  • gasses passing downwardly along column 12b will flow upwardly through passageway 12e into plenum chamber 52 and its associated aperture Sli.
  • the air flow meter 46 provides a means for measuring the quantity of gasses passing from the patients pleural cavity.
  • aperture Sli measures a volume of gas flow of from 0 to 2 liters per minute.
  • Aperture 51h measures a gas flow of from 2 to 4 liters per minute.
  • the last aperture 51a measures a gas flow in excess of 28 liters per minute.
  • the partitions 53 provide a means for separating the bubbles passing through each of the apertures so that the number of passageways through which gas is passing can be readily determined.
  • the pressure regulator manometer 13 is formed with a first column 13a having its upper end exposed to atmosphere and a second column which comprises portions 13b and 13c.
  • the upper ends of columns 13b and 13c are connected via passageway 54 with the vacuum source through opening 15.
  • the purpose of portions 13b and is to confine the bubbles rising through the chamber to the portion 11% so that liquid rising with the air bubbles will engage the baffle 55 which will serve to deflect the liquid downwardly into portion 1312 or 13c after which the gas may continue its upward movement through passageway 54 to the opening 15.
  • portion 13c provides a relatively calm body of liquid as compared with the portion 13b which may be bubbling vigorously. Consequently, the level of liquid in the second column of the pressure regulator chamber 13 can be readily determined by noting the level of liquid in portion 13c.
  • an air flow meter 57 At the lower end of the column. 13b there is provided an air flow meter 57.
  • This air flow meter 57 is identical to the air flow meter 46 previously described except with respect to the size of the apertures therein.
  • the aperture 51i' is located directly above and in the path of flow of the passageway 13a which is the end of the lower upturned end portion of passageway 13a.
  • the common duct in the lower end portion of the air flow meter 57 is disposed at an angle of from 7 to 13 to the horizontal with best results being obtained at an angle of 10.
  • the hole sizes for the air flow meter are as follows:
  • the basic operation of the apparatus 10 is similar to the basic operation of the apparatus as described in prior US. Pat. Nos. 3,363,626 and 3,363,627.
  • the improvements described in the present invention have not changed this basic operation. Rather, they have been designed for the purpose of increasing the efficiency, controllability and applicability of the present type of apparatus.
  • the effect that each of these individual features has on the basic operation is believed to be clear from the preceeding description of these structional elements. However, for purposes of convenience, the operation of the invention will be briefly summarized.
  • an amount of liquid is introduced into the pressure regulator chamber 13 through opening 16 which will give the desired vacuum after the pump is turned on. Because of the relative sizes of column 13a on the one hand and 13b and 130 on the other hand, the water may be filled to the level of the desired degree of vacuum as once the vacuum pump is operated and column 13a evacuated, the water level will not change significantly.
  • the desired amount of liquid is introduced through opening 15 into the underwater seal chamber and the opening 15 is then connected to the vacuum pump. Opening 14 is connected to the pleural cavity of the patient and the vacuum pump is started.
  • the liquid is evacuated from column 13a and air bubbles through the pressure regulator chamber 13b to maintain the vacuum within the device at the water level set.
  • valve 37 operates to close off the passageway from collection chamber 11 to column 12b and thus permits the patient to maintain the high negative pressure within his pleural cavity which is necessary to expand the lungs.
  • valve 37 When normal breathing is resumed the valve 37 will return to its open position and permit communication between the chamber 11 and column 12b and the water within the water seal saver chamber 35 will pass downwardly into the underwater seal except for a small portion within the depressed part 36 which will remain to indicate to the attending physician that such a condition of high negativity has existed.
  • the air flow meters 46 and 57 give a clear indication of the degree of gasses passing through the underwater seal and pressure regulator chamber respectively. If gas is passing through all of the apertures in the air flow meter 46 and no air flow is indicated in the meter 57, the physician is aware that the leakage in the patients pleural cavity is completely overcoming the pump and than an emergency condition exists. The physician can determine improvement in the patient by noting decreased gas flow through meter 46 from day to day and the particular air flow meter provided according to the present invention gives an exceedingly accurate measurement of such gas flow.
  • valve and housing structure similar to valve 37 could be located within column 130. This valve would normally be open to permit passage of air downwardly through passageway 13a. However, when very high positive pressure develops in the patients pleural cavity caused, for example, by a coughing spell, the water in the pressure regulator manometer rises in column 13a to close the valve. Otherwise the water in the pressure regulator manometer would pass outwardly through opening 16. It is possible to use the air flow meters 46 and 5 and/or the valve 37 in connection with conventional one, two or three bottle systems. The air flow meter and a check valve similar to valve 37 may be made as separate units and installed in the tubing connecting conventional bottle systems.
  • valve 37 may be inserted between the patient and the collection chamber. This would permit flow of fluid from the patient to the collection chamber but the valve would close upon the development of high negativity in the pleural cavity to prevent the return of fluids to the pleural cavity.
  • the check valve could be installed between the collection chamber and water seal bottle to prevent loss of the water seal during periods of high negativity.
  • an air flow meter similar to meter 46 could be mounted in fluid in or adjacent to the water seal to measure gas flow from the pleural cavity.
  • a drainage device for draining fluids from a cavity comprising an inlet opening adapted to be placed in communication with the cavity to be drained, a collection chamber in fluid communication with the inlet opening, a seal chamber having first and second columns in fluid communication with each other at the lower ends thereof, the upper end of the first column being in fluid communication with the collection chamber, the upper end of the second column being in fluid communication with a preselected fluid pressure level, said chamber adapted to receive a body of liquid within the first and second columns, and air flow measuring means disposed in said seal chamber, said air flow measuring means including a series of independent gas passageways and a common duct extending beneath said passageways, the gas passageway at one end of said measuring means being disposed immediately above and in the path of fluid flow from the connection of said first column to said second column and said common duct extending angularly downwardly across said second column.
  • each of said independent gas passageways of said air flow measuring means includes a plenum chamber disposed adjacent said common duct and an aperture of a diameter less than said plenum chamber at the upper end of said plenum chamber providing communication between said plenum chamber and said second column.
  • a drainage device for draining fluids from a cavity comprising an inlet opening adapted to be placed in fluid communication with the cavity to be drained, a vacuum opening adapted to be placed in fluid communication with a vacuum source and with the inlet opening for drawing fluid from the cavity into the device, a manometer for regulating the vacuum, said mano-meter comprising first and second columns in fluid communication with each other, said manometer adapted to receive a body of liquid within the first and second columns, the first column being exposed to atmosphere and the second column being exposed to the vacuum source, and air flow measuring means disposed in said manometer for measuring the air flow from said first column into said second column, said air flow measuring means including a series of independent gas passageways and a common duct extending beneath said passageways, the gas passageway at one end of said measuring means being disposed immediately above and in the path of fluid flow from the connection of said first column to said second column and said common duct extending angularly downwardly across said second column.
  • eachof said independent gas passageways of said air flow measuring means includes a plenum chamber disposed adjacent said common duct and an aperture of a diameter less than said plenum chamber at the upper end of said plenum chamber providing communication between said plenum chamber and said second column.
  • a drainage device for draining fluids from a cavity comprising an inlet opening adapted to be placed in communication with the cavity to be drained, a collection chamber in fluid communication with the inlet opening, a seal chamber having first and second columns in fluid communication with each other at the lower ends thereof, the upper end of the first column being in fluid communication with the collection chamber, the upper end of the second column being in fluid communication with a preselected fluid pressure level, said seal chamber adapted to receive a body of liquid within the first and second columns, and valve llll means disposed in said first column, said valve means closing the fluid communication between said first column and the collection chamber in response to a predetermined fluid pressure differential between the cavity to be drained and the second column of the seal chamber.
  • a drainage device for draining fluids from a cavity comprising an inlet opening adapted to be placed in communication with the cavity to be drained, a collection chamber in fluid communication with the inlet opening, a seal chamber having first and second columns in fluid communication with each other at the lower ends thereof, the upper end of the first column being in fluid communication with the collection chamber, the upper end of the second column being in fluid communication with a preselected fluid pressure level, said seal chamber adapted to receive a body of liquid within the first and second columns, and valve means disposed in said first column, said valve means closing the fluid communication between said first column and the collection chamber in response to liquid rising in said first column from the seal chamber to move said valve means upwardly.
  • valve means comprises a cylinder within a valve chamber having a restricted aperture at the upper end thereof, said cylinder having a weight sufficient to rest at the lower end of the valve chamber and maintain said aperture open during normal operation of said device and to float upwardly to close said aperture when the pressure differential between the cavity and the second column is adequate to cause the liquid within the seal chamber to rise into the valve chamber.
  • a drainage device for draining fluids from a cavity comprising an inlet opening adapted to be placed in communication with the cavity to be drained, a collection chamber in fluid communication with the inlet opening, a seal chamber having first and second seal columns in fluid communication with each other at the lower ends thereof, the upper end of the first seal column being in fluid communication with the collection chamber, the upper end of the second seal column being in fluid communication with a preselected fluid pressure level, said seal chamber adapted to receive a body of liquid within the first and second seal columns, first air flow measuring means disposed in said seal chamber, said air flow measuring means including a series of first independent gas passageways and a first common duct extending beneath said passageways, the gas passageway at one end of said measuring means being disposed immediately above and in the path of fluid flow from the connection of said first seal column to said second seal column and said first common duct extending angularly downwardly across said second seal column, a vacuum opening in said drainage device adapted to be placed in fluid communication with a cacuum source and with the in
  • second air flow measuring means disposed in said manometer for measuring the air flow from said first manometer column into said second manometer column, said second air flow measuring means including a series of second independent gas passageways and a second common duct extending beneath said passageways, the gas passageway at one end of said measuring means being disposed immediately above and in the path of fluid flow from the connection of said first manometer column to said second manometer column and said second common duct extending angularly downwardly across said second manometer column.
  • a drainage device for draining fluids from a cavity comprising an inlet opening adapted to be placed in communication with the cavity to be drained, a collection chamber in fluid communication with the inlet opening, means forming a water seal chamber in communication with said collection chamber, and air flow measuring means for measuring the air flow from the collection chamber through the water seal chamber, said air flow measuring means including a series of independent gas passageways and a common duct extending beneath said passageways, said common duct extending angularly downwardly along the path of the air flow from the collection chamber through the water seal chamber.
  • each of said independent gas passageways of said air flow measuring means includes a plenum chamber disposed adjacent said common duct and an aperture of a diameter less than said plenum chamber at the upper end of said plenum chamber.
  • a drainage device for draining fluids from a cavity comprising an inlet opening adapted to be placed in communication with the cavity to be drained, a collection chamber in fluid communication with the inlet opening, means forming a water seal chamber in communication with said collection chamber, a pressure regulator chamber in communication with the water seal chamber, and air flow measuring means for measuring the air flow through the pressure regulator chamber, said air flow measuring means including a series of independent gas passageways and a common duct extending beneath said passageways, said common duct extending angularly downwardly along the path of the air flow through the pressure regulator chamber.
  • each of said independent gas passageways of said air flow measuring means includes a plenum chamber disposed adjacent said common duct and an aperture of a diameter less than said plenum chamber at the upper end of said plenum chamber.
  • a drainage device for draining fluids from a cavity comprising an inlet opening adapted to be placed in communication with the cavity to be drained, a collection chamber in fluid communication with the inlet opening, a water seal chamber, a passageway interconnecting the collection chamber and water seal chamber, and valve means disposed in said passageway, said valve means being normally open and closing said passageway when water from said water seal chamber rises in said assageway.
  • a ramage device for draining fluids from a cavity comprising an inlet opening adapted to be placed in communication with the cavity to be drained, a collection chamber in fluid communication with the inlet opening, a water seal chamber, a pressure regulator chamber, passageways interconnecting the collection chamber and water seal chamber and interconnecting the water seal chamber and pressure regulator chamber, a passageway to atmosphere in the pressure regulator chamber, and valve means in said passageway to atmosphere, said valve means being normally open and closing said passageway in response to water rising in said passageway from the pressure regulator chamber.
  • a drainage device for draining fluids from a cavity comprising an inletopening adapted to be placed in communication with the cavity to be drained,
  • a collection chamber a fluid passageway in fluid communication with the inlet opening and the collection chamber to'receive fluids drained from the cavity and means in said fluid passageway for preventing the flow of fluid into the cavity during conditions of high negativity within the cavity
  • said means comprising a chamber with a restricted aperture at the upper end thereof and a valve within said chamber, liquid seal means disposed in said device on the side of said valve away from said cavity to prevent atmospheric pressure from reaching said cavity, said valve having a weight sufi'icient to rest at the lower end of the valve chamber and maintain said aperture open during normal operation of said device and to float upwardly to close said aperture when the pressure differential between the collection chamber and the cavity is sufficient to cause liquid fluid to rise within the passageway.

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Pulmonology (AREA)
  • Vascular Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • External Artificial Organs (AREA)
  • Measuring Volume Flow (AREA)
  • Details Of Flowmeters (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Measuring Fluid Pressure (AREA)
US78129A 1970-10-05 1970-10-05 Underwater drainage apparatus with air flow meters Expired - Lifetime US3683913A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US78129A US3683913A (en) 1970-10-05 1970-10-05 Underwater drainage apparatus with air flow meters
CA095,808A CA943423A (en) 1970-10-05 1970-10-16 Underwater drainage apparatus with air flow meters
GB5177770A GB1335849A (en) 1970-10-05 1970-10-30 Surgical drainage apparatus
FR7042370A FR2105742A5 (enrdf_load_stackoverflow) 1970-10-05 1970-11-25
JP7111879A JPS5233439B1 (enrdf_load_stackoverflow) 1970-10-05 1971-03-08
DE2148331A DE2148331C3 (de) 1970-10-05 1971-09-28 Medizinische Dränagevorrichtung zum Absaugen von Flüssigkeiten aus einem Körperhohlraum
AU14188/76A AU498110B2 (en) 1970-10-05 1976-05-21 Underwater drainage apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78129A US3683913A (en) 1970-10-05 1970-10-05 Underwater drainage apparatus with air flow meters

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US3683913A true US3683913A (en) 1972-08-15

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US78129A Expired - Lifetime US3683913A (en) 1970-10-05 1970-10-05 Underwater drainage apparatus with air flow meters

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US (1) US3683913A (enrdf_load_stackoverflow)
JP (1) JPS5233439B1 (enrdf_load_stackoverflow)
AU (1) AU498110B2 (enrdf_load_stackoverflow)
CA (1) CA943423A (enrdf_load_stackoverflow)
DE (1) DE2148331C3 (enrdf_load_stackoverflow)
FR (1) FR2105742A5 (enrdf_load_stackoverflow)
GB (1) GB1335849A (enrdf_load_stackoverflow)

Cited By (74)

* Cited by examiner, † Cited by third party
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US3782497A (en) * 1972-10-18 1974-01-01 Deknatel Inc Sound muffler for drainage device
US3861390A (en) * 1973-08-06 1975-01-21 Sherwood Medical Ind Inc Thoracic drainage unit with overflow preventing valve
US3946735A (en) * 1974-05-13 1976-03-30 Dewall Richard A Medical drainage device
US4018224A (en) * 1976-04-07 1977-04-19 Deknatel, Inc. Underwater drainage device with dual collection chambers
USD250207S (en) 1977-06-27 1978-11-07 Deknatel Inc. Pleural cavity drainage container
US4258824A (en) * 1979-01-22 1981-03-31 Bioresearch Inc. Sound muffling baffle for drainage device
FR2474870A1 (fr) * 1979-12-26 1981-08-07 Bioresearch Inc Dispositif de drainage comportant une chambre de sortie distincte
WO1982004397A1 (en) * 1981-06-18 1982-12-23 Lab Bentley Pleural drainage system
EP0072196A1 (en) * 1981-08-05 1983-02-16 Bioresearch Inc. Drainage device
US4469484A (en) * 1982-06-08 1984-09-04 Bio Research Inc. Surgical drainage device with automatic negative pressure relief system
US4519796A (en) * 1983-06-17 1985-05-28 Russo Ronald D Thoracic drainage device
US4533353A (en) * 1982-04-08 1985-08-06 Alex E. Genson Dry type discharge liquid extraction device for the thoracic chamber
DE3515953A1 (de) * 1984-05-04 1985-11-07 Bioresearch Inc., Farmingdale, N.Y. Pleurahoehlen-drainagevorrichtung zum ableiten von fluiden aus dem koerper eines patienten
GB2165758A (en) * 1984-10-18 1986-04-23 Bioresearch Inc Collecting fluids from a body cavity
DE3544010A1 (de) * 1985-02-22 1986-08-28 Bioresearch Inc., Farmingdale, N.Y. Luftleck-anzeigeeinrichtung fuer eine pleura-drainagevorrichtung, sowie eine damit ausgeruestete drainagevorrichtung
US4681606A (en) * 1986-02-26 1987-07-21 Cobe Laboratories, Inc. Drip chamber
US4715856A (en) * 1982-05-24 1987-12-29 C. R. Bard, Inc. Air leak detection system for chest fluid collection bottles and blow-out prevention baffle therefor
US4756501A (en) * 1986-10-07 1988-07-12 Pfizer Hospital Products Group, Inc. Hanger for drainage device
US4772277A (en) * 1987-08-20 1988-09-20 Vanderbilt University Chest cavity evacuation apparatus with resettable air volume meter
US4781707A (en) * 1986-02-18 1988-11-01 Boehringer Laboratories Process and apparatus for collecting blood from a body cavity for autotransfusion
US4784642A (en) * 1986-10-07 1988-11-15 Pfizer Hospital Products Group, Inc. Meterless drainage device with suction control
DE3829578A1 (de) * 1988-01-07 1989-07-20 Bioresearch Inc Drainagevorrichtung mit abtrennbarer sammelkammer
US4929244A (en) * 1988-09-02 1990-05-29 Sherwood Medical Company Baffle system for use in underwater drainage devices
US4963135A (en) * 1989-06-09 1990-10-16 Sherwood Medical Company Floatation chamber for use in a chest drainage device
US4988342A (en) * 1987-03-02 1991-01-29 Atrium Medical Corporation Improved fluid recovery system
US4994050A (en) * 1989-10-31 1991-02-19 Sherwood Medical Company Float chamber and sleeve for use in a chest drainage device
EP0361813A3 (en) * 1988-09-27 1991-03-13 Deknatel Technology Corporation Drainage device
US5026358A (en) * 1986-10-07 1991-06-25 Pfizer Products Hospital Group Inc. Drainage device
DE4110554A1 (de) * 1990-03-30 1991-10-02 Bioresearch Inc Elektronisches ueberwachungssystem fuer eine drainagevorrichtung
US5114416A (en) * 1990-07-20 1992-05-19 Atrium Medical Corporation Fluid recovery system having an improved float valve
FR2669987A1 (fr) * 1990-12-04 1992-06-05 Bioresearch Inc Systeme d'aspiration portable.
EP0497382A2 (en) 1984-08-20 1992-08-05 D'ANTONIO, Nicholas F. Wound drainage system
US5141504A (en) * 1987-03-02 1992-08-25 Atrium Medical Corporation Fluid recovery system with stopcock suction control
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US5931821A (en) * 1996-03-05 1999-08-03 Tyco Group S.A.R.L. Chest drainage unit with controlled automatic excess negativity relief feature
US5989234A (en) * 1997-01-14 1999-11-23 Deknatel Technology Corporation Device and system for draining a body cavity and methods related thereto
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JP3177254B2 (ja) 1997-01-14 2001-06-18 ジエンジーム・コーポレイシヨン 体腔ドレナージ装置及びシステム
US6358269B1 (en) * 1998-11-02 2002-03-19 Ralph Aye Method of treating peripheral bronchopleural fistulas
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US6749592B2 (en) 1999-06-18 2004-06-15 Kevin M. Lord Suction pressure regulator for use with a chest drainage
WO2000078373A2 (en) 1999-06-18 2000-12-28 Genzyme Corporation Rolling seal suction pressure regulator, apparatus and system for draining a body cavity
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US8974484B2 (en) 2001-09-11 2015-03-10 Spiration, Inc. Removable lung reduction devices, systems, and methods
US8986336B2 (en) 2001-10-25 2015-03-24 Spiration, Inc. Apparatus and method for deployment of a bronchial obstruction device
US7942931B2 (en) 2002-02-21 2011-05-17 Spiration, Inc. Device and method for intra-bronchial provision of a therapeutic agent
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US8177805B2 (en) 2002-03-20 2012-05-15 Spiration, Inc. Removable anchored lung volume reduction devices and methods
US8926647B2 (en) 2002-03-20 2015-01-06 Spiration, Inc. Removable anchored lung volume reduction devices and methods
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US20060122575A1 (en) * 2002-06-11 2006-06-08 Akio Wakabayashi System and efficient drainage of body cavity
US8439893B2 (en) 2002-06-11 2013-05-14 Medela Holding Ag System and method for efficient drainage of body cavity
US8079368B2 (en) 2003-04-08 2011-12-20 Spiration, Inc. Bronchoscopic lung volume reduction method
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US20050154359A1 (en) * 2003-06-19 2005-07-14 Jarl Charlez Pressure regulator for a chest drainage device
US20040267215A1 (en) * 2003-06-19 2004-12-30 Jarl Charlez Chest drainage device
US20040260255A1 (en) * 2003-06-19 2004-12-23 Jarl Charlez Collecting vessel for body fluids
US8974527B2 (en) 2003-08-08 2015-03-10 Spiration, Inc. Bronchoscopic repair of air leaks in a lung
US9622752B2 (en) 2003-08-08 2017-04-18 Spiration, Inc. Bronchoscopic repair of air leaks in a lung
US20070038139A1 (en) * 2005-08-12 2007-02-15 Sinha Anil K Chest tube air counters and methods
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US20070219534A1 (en) * 2006-03-17 2007-09-20 Phung Trinh D Modular chest drainage design and assembly method
US20070219536A1 (en) * 2006-03-17 2007-09-20 Phung Trinh D Pressure gauge for chest drainage unit
US20070219537A1 (en) * 2006-03-17 2007-09-20 Phung Trinh D Pressure gauge display for chest drainage unit
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US20150174305A1 (en) * 2013-12-20 2015-06-25 Northwestern Univeristy Chest Tube Drainage System with Analyzer
US10220121B2 (en) 2013-12-20 2019-03-05 Northwestern University Chest tube drainage system with analyzer
CN107555389A (zh) * 2017-08-29 2018-01-09 鼎纳科技有限公司 气压排液装置
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DE2148331B2 (de) 1975-01-23
DE2148331A1 (de) 1972-04-06
JPS5233439B1 (enrdf_load_stackoverflow) 1977-08-27
GB1335849A (en) 1973-10-31
AU1418876A (en) 1976-08-05
DE2148331C3 (de) 1975-09-04
AU498110B2 (en) 1979-02-08
CA943423A (en) 1974-03-12
FR2105742A5 (enrdf_load_stackoverflow) 1972-04-28

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