Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS3583401 A
Publication typeGrant
Publication dateJun 8, 1971
Filing dateJan 21, 1969
Priority dateJan 21, 1969
Publication numberUS 3583401 A, US 3583401A, US-A-3583401, US3583401 A, US3583401A
InventorsHarris Robert W, Vailiancourt Vincent L
Original AssigneeBard Inc C R
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Vented closed drainage system with double lumen tube
US 3583401 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

United States Patent [72] Inventors Vincent L. Vaillancourt Livingston; Robert W. Harris, Florham, both of, NJ. [211 App]. No. 792,537 [22] Filed Jan. 21, 1969 [45] Patented June 8, 1971 [73] Assignee C. R. Bard, Inc.

Murray Hill, NJ.


[52] U.S.C1 128/275, 128/350 [51] lnt.C1 A6" 5/44 [50] Field oiSearch 128/214,

[56] References Cited UNITED STATES PATENTS 2,749,913 6/1956 Wallace 3,332,422 7/1967 Jinkens et a1. 3,417,750 12/1968 carson 3,430,631 311969 Abramson Primary Examiner-Charles F. Rosenbaum Attorney-W. Saxton Seward ABSTRACT: Means for eliminating the negative pressure problem in a closed urinary (or other) drainage system by use of a drainage tube having two lumens, in communication adjacent the upstream end of the tube and also adjacent the lower end where the tube lumens open into a drip chamber having a vent, the drip chamber preferably being formed with an enlarged base and large flutter valve extending into a drainage receptacle such as a bedside bag.


INVENTORS Vm enf LVmHanwl Y Y R rt W, Harri MMJM ATTORNEYS VENTED CLOSED DRAINAGE SYSTEM WITH DOUBLE LUMEN TUBE A major problem in the operation of a closed urinary drainage system is the hang-up" of the liquid column in the drainage tube, which tube normally extends generally downward from the level of the patient's bladder to a recepta cle some distance lower. The weight of such a column results in the development of negative pressure in the bladder, not only emptying it, but also tending to draw the bladder wall against the end of the catheter and even partly into the eyes thereof, with serious adverse effects on the patient.

Methods heretofore proposed to alleviate or eliminate this condition include venting the system at a suitable point in its upper portion and use of abnormally large diameter tubes. As for the latter a tube of more than eleven-thirtyseconds in. I. D. will release its liquid column if vigorously shaken and it is be lieved that tubing larger than one-half inch will allow free flow of the liquid as air enters the outlet and bubbles up through the descending liquid, but most closed systems actually use tubing in the range of three-sixteenths in. to ninethirtyseconds in. I. D. and substitution of larger tubing is not considered practical or convenient.

The entry of air into the lower end of a small single tube is prevented by the surface tension of the liquid column at that point and the fact that there is normally no place for air to enter at the upper end of the tube. It has been discovered that the provision of a tube having two parallel lumens, of the same or different sizes, in communication at both ends, prevents the development of any detrimental negative pressure at the upper end. The liquid being drained may enter both lumens and form columns therein but such columns have no tendency to be or remain of equal weight and the heavier one thus automatically siphons the lighter one up through the connecting passage (in or adjacent to the adapter) and into the lumen of the heavier, descending column followed by air following up from the vented drip chamber in any quantity needed to replace the downward flowing liquid.

A practical embodiment of the invention is shown in the accompanying drawing, wherein:

FIG. 1 represents an elevation of a complete closed urinary drainage system;

FIG. 2 represents a cross-sectional view of the tubing on the line II-Il of FIG. 1;

FIG. 3 represents a detail vertical section through the upper part of the drip chamber;

FIG. 4 represents a detail elevation showing a drip chamber without flutter valve.

Referring to the drawings, a urinary drainage system is shown as comprising the normal basic elements of catheter l, drainage tube 2, adapter 3, drip chamber 4 and collection receptacle 5 in the form of a bedside bag supported in any customary manner, as by means of the hanger 6. In the present case the drainage tube is constituted by dual lumen tubing,

preferably formed by extruding a pair of tubes joined together tangentially along the line 7 (FIG. 2). Alternatively, separate tubes could be cemented together, if desired. The upper ends of the tubes may be separated slightly, as indicated at 8, in order to facilitate fixing them securely in the adapter 3, the interior of which constitutes a connecting passage between the lumens of the tubes. The lower ends of the tubes are shown as being similarly separated, as shown at 9, and extended into the upper portion of the drip chamber 4 through supporting and reinforcing collars 9'.

Air is permitted to enter the drip chamber (or leave it) through a vent I0, shown as including a collar 11 projecting upward from the top of the chamber 4, a vent hole 12 passing through said top, a small wad of cotton 13, acting as a filter, and a cap 14 with inwardly projecting fins 15 between which air may pass. The form of the recess within the collar 11 permits easy insertion of the cotton filter, and the cap 14 prevents the cotton from being wetted in the event that the patient carries the receptacle 5 into a shower.

Liquid enters the drip chamber at a rate which necessarily averages the same as the rate of flow from the bladder, but it passes down the drainage tube, through either lumen, in

discontinuous slugs of varying volume but each with the velocity due to a head of 2 to 3 feet. Since the interior of the drip chamber is vented to atmosphere the head of liquid accumulated therein can never exceed the height of of the chamber, so that the base 16 of the drip chamber must be substantially larger than the inlet. It is preferably fitted with a wide flutter valve 17 within the bag 5, designed to permit emptying of the chamber at a rate fast enough to prevent flooding under all conditions.

The flutter valve 17 physically closes ofi the drainage bag 5 from the drip chamber 4 and drainage tube 2 so that there is no open air path for airborne bacteria to ascend from the bag into the drip chamber, tube and eventually the patient. The drip chamber breaks the liquid path but no provisions have been made heretofore to break also the air path. Although highly desirable, as just noted, the flutter valve could be omitted, leaving the drip chamber to open directly into the bag, as illustrated in FIG. 4.

In operation, liquid from the patients bladder (or possibly an other body cavity being drained) flows from the catheter I to the adapter 3 where it is free to enter either or both of the drainage tube lumens. As a column of liquid accumulates in a given lumen its weight tends to create a negative pressure condition at the catheter, which, upon emptying of the bladder, may cause discomfort and injury to the patient. In the present system the negative pressure at the upper end of one lumen is communicated, within the adapter, to the other lumen; if there is no liquid in said other lumen it acts as a vent, supplying air from the vented drip chamber to the upper end of the first lumen and permitting the liquid (column or slug) therein to descend freely with only such negative pressure as may result from the resistance in the air conduit. If the second lumen contains some liquid (less, by definition, than in the first lumen) this liquid will be drawn up and over into the first lumen, again with only a slight or temporary increase in negative pressure.

What I claim is:

1. A closed system for drainage ofliquid from a body cavity comprising a tubular conduit having a single liquid inlet opening in the cavity and a downwardly extending section, and a drainage receptacle in a position to receive liquid from said conduit, the downwardly extending section including a drainage tube having two lumens which are in communication at the upstream end of the tube and adjacent the downstream end of the tube.

2. A system according to claim 1 which includes a drip chamber into which projects the lower end of the tube, communication between the lumens being through said drip chamber and said chamber being vented to atmosphere.

3. A system according to claim 1 in which the tubular conduit comprises a catheter and an adapter connecting the catheter to the drainage tube, communication between the lumens being through a passage within said adapter.

4. A system according to claim 3 which includes a drip chamber into which projects the lower end of the tube, communication between the lumens being through said drip chamber and said chamber being vented to atmosphere.

5. A system according to claim 2 in which the drip chamber is provided with a flutter valve on its outlet.

6. A system according to claim 2 in which the lower portion of the drip chamber is enlarged and is provided with a wide flaring flutter valve on its outlet.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2749913 *Nov 23, 1954Jun 12, 1956AmerSurgical drain
US3332422 *Sep 24, 1963Jul 25, 1967Medex IncIsolating connector for drainage bag
US3417750 *Oct 22, 1965Dec 24, 1968Bard Inc C RAspirating means and one-way valve
US3430631 *Jan 12, 1966Mar 4, 1969Abramson Daniel JSurgeon's drain
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3661143 *Jun 23, 1969May 9, 1972Henkin Melvyn LaneMedical apparatus for drainage, collection and monitoring of body fluids
US3800795 *Jun 16, 1971Apr 2, 1974Sherwood Medical Ind IncUrinary drainage collecting device
US3809085 *May 23, 1972May 7, 1974Deknatel IncSurgical drainage system
US3823716 *Aug 14, 1972Jul 16, 1974Simpla PlasticsUrinary drainage devices
US3838691 *Feb 9, 1973Oct 1, 1974Pharma Plasto Pty LtdCatheter device
US3851650 *Jun 6, 1972Dec 3, 1974Kendall & CoClosed drainage system with double lumen tube
US3861396 *Aug 8, 1973Jan 21, 1975Hydro Med Sciences IncDrainage tube
US3908656 *Nov 23, 1973Sep 30, 1975Kendall & CoActivating means for vented chambers
US3957050 *May 23, 1975May 18, 1976Hines Jr Robert SVentricular drainage apparatus
US4349029 *Jun 16, 1980Sep 14, 1982Mott Patricia ADrainage balloon catheter system
US5207661 *Jun 7, 1991May 4, 1993Smiths Industries Public Limited CompanyBody fluid drainage assembly
US6348046 *Nov 3, 1999Feb 19, 2002B. Braun Melsungen AgUrine measuring device
US7462171Feb 24, 2006Dec 9, 2008Tyco Healthcare Group LpUrine collection bag with angled valve support
US7645968Jun 30, 2006Jan 12, 2010Tyco Healthcare Group LpMethod for securing a urine meter to a urine bag
US8328734Dec 11, 2012Covidien LpUrine meter with improved drain construction
US20060129136 *Dec 9, 2005Jun 15, 2006Meacham George B KCatheter
US20070203464 *Feb 24, 2006Aug 30, 2007Green Kurt EUrine collection bag with integral anti-reflux valve
US20070203465 *Feb 24, 2006Aug 30, 2007Larry SalvadoriUrine collection bag with angled valve support
US20130218106 *Jul 29, 2011Aug 22, 2013C. R. Bard, Inc.Automated Method of Pooling Elimination with a Biological Fluid Collection System
EP0041487A1 *May 25, 1981Dec 9, 1981Hans-Peter ScholanderCatheter device
WO2001010362A1 *Aug 2, 2000Feb 15, 2001Maersk Medical A/STubular conduit for urine collecting receptacle
U.S. Classification604/129, 604/324
International ClassificationA61F5/441
Cooperative ClassificationA61F5/441
European ClassificationA61F5/441