Underwater drainage device

Claim 2

An underwater drainage device for removing liquids and gases from the pleural cavity of a patient comprising: (a) a collection chamber having a flexible tube in fluid communication with the pleural cavity of a patient so that the fluid from the patient will be directed to said collection chamber; (b) a liquid seal chamber having a predetermined amount of liquid therein; (c) a suction chamber adapted to be connected to a source of suction and having a level of liquid therein; (d) an enclosed manifold member having side walls, connected to and forming a passageway between said collection chamber; (e) means on said manifold member for providing fluid communication between said collection chamber, said water seal chamber and said suction chamber so that fluid and gases from the patient will pass to said collection chamber, gases can pass from the collection chamber to the water seal chamber and the suction chamber; (f) means for removably interconnecting said collection chamber to said manifold so as to permit removal of liquid from the collection chamber without disturbing the contents of the water seal chamber or the suction chamber; (g) means for removably interconnecting said suction chamber and said manifold so as to permit changing of the level of liquid therein; and (h) baffle means spaced along and extending from said side walls into the passageway in said manifold member providing a sinuous path between said chambers to permit gases to pass between said chambers while deterring liquid from passing between said chambers.

Claim 3

An underwater drainage device as defined in claim 1 wherein said means for interconnecting said collection chamber and said manifold consist of a bayonet connection consisting of cooperating ridges and lugs.

Claim 4

An underwater drainage device as defined in claim 1 wherein said means for interconnecting said suction chamber and said manifold consists of a bayonet connection consisting of cooperating ridges and lugs.

Claim 5

An underwater drainage device as defined in claim 2 wherein said lugs are on said manifold and said ridges are on said collection chamber.

Claim 6

An underwater drainage device as defined in claim 3 wherein said lugs are on said manifold and said ridges are on said suction chamber.

Claim 7

An underwater drainage device as defined in claim 1 wherein said manifold, said collection chamber, said seal chamber and said suction chamber are made of plastic.

Claim 8

An underwater drainage device as defined in claim 1 having a positive pressure relief valve operatively associated with said water seal chamber, said pressure relief valve including a plurality of openings which are closed by a rubber membrane.

Claim 9

An underwater drainage device as defined in claim 1 having stand means for positioning the device on a flat surface, said stand means having at least two positions.

Claim 10

An underwater drainage device as defined in claim 1 having hook means for hanging said device adjacent a patient.

Claim 11

An underwater drainage device as defined in claim 1 having a drainage tube extending from the collection chamber to a patient and means on said drainage tube to prevent kinking of said drainage tube.

Claim 12

An underwater drainage device as defined in claim 1 wherein said manifold includes barrier means for preventing liquid flow between the collection chamber and the water seal chamber.

Claim 13

An underwater drainage device as defined in claim 11 having a barrier separating the collection chamber from the suction chamber.

Claim 14

An underwater drainage device as defined in claim 1 having a suction line in said suction chamber and barrier means for preventing liquid return flow through the suction line.

Claim 15

An underwater drainage device as defined in claim 1 having foot means within said suction chamber for reducing liquid agitation.

Claim 16

In an underwater drainage device having a collection chamber adapted to be connected in fluid communication with the pleural cavity of a patient, a liquid seal chamber in fluid communication with said collection chamber and a suction chamber in fluid communication with said seal chamber; retarding means comprising: (a) a water seal tube extending into said liquid seal chamber in fluid communication with said collection chamber; (b) an open ended cylinder connected to said water seal tube; (c) a liquid retarding frame means having a plurality of vertical struts interconnected by a plurality of circular support means adapted to position within said open ended cylinder; (d) a membranous material connected to said frame so as to retard the flow of liquid from the water seal chamber towards said collection chamber.

Claim 17

In an underwater drainage device having a collection chamber adapted to be connected in fluid communication with the pleural cavity of a patient, a liquid seal chamber in fluid communication with said collection chamber and a suction chamber in fluid communication with said seal chamber; retarding means comprising: (a) a water seal tube extending into said liquid seal chamber in fluid communication with said collection chamber; (b) an open ended cylinder connected to said water seal tube; (c) a liquid retarding frame means having a plurality of vertical struts interconnected by a plurality of circular support means adapted to position within said open ended cylinder; (d) a membranous material connected to said frame so as to retard the flow of liquid from the water seal chamber towards said collection chamber.

Claim 18

An underwater drainage device as defined in claim 15 wherein said membranous material is hydrophobic.

Claim 19

A liquid retarding means for use in an underwater drainage device having a collection chamber adapted to be in fluid communication with the pleural cavity of a patient and a water seal chamber having a predetermined level of liquid therein comprising: (a) a water seal tube extending into said water seal chamber, and in fluid communication with said collection chamber; (b) an open ended cylinder in engagement with said water seal tube, said open ended cylinder including an enlarged diameter portion, (c) a liquid flow retarding frame means positioned within said enlarged diameter portion, (d) a membranous material connected to said frame so that there is a space between said membranous material and the wall of said enlarged diameter portion, (e) said membranous material being positioned so as to retard the flow of liquid from the water seal chamber when there is a high negativity in the pleural cavity; and (f) means for permitting liquid to return to said water seal chamber when the period of high negativity ends.

Claim 20

A liquid retarding means for use in an underwater drainage device having a collection chamber adapted to be in fluid communication with the pleural cavity of a patient and a water seal chamber having a predetermined level of liquid therein comprising: (a) a water seal tube extending into said water seal chamber, and in fluid communication with said collection chamber; (b) an open ended cylinder in engagement with said water seal tube, said open ended cylinder including an enlarged diameter portion, (c) a liquid flow retarding frame means positioned within said enlarged diameter portion, (d) a membranous material connected to said frame so that there is a space between said membranous material and the wall of said enlarged diameter portion, (e) said membranous material being positioned so as to retard the flow of liquid from the water seal chamber when there is a high negativity in the pleural cavity; and (f) means for permitting liquid to return to said water seal chamber when the period of high negativity ends.

Claim 21

An underwater drainage device as defined in claim 17 wherein there is a flexible gasket at the bottom of said cylindrical frame which permits liquid flow in one direction.

Claim 22

An underwater drainage device as defined in claim 17 having barrier means for preventing liquid flow between said water seal chamber and said collection chamber and barrier means for preventing return liquid flow through said suction line.

Claim 23

An underwater drainage device as defined in claim 19 having means for maintaining said device in an operative position.

Claim 24

An underwater drainage device as defined in claim 20 wherein said means for maintaining consists of a stand.

Claim 25

An underwater drainage device as defined in claim 20 wherein said means for maintaining consists of hooks.

Claim 26

An underwater drainage device for removing liquids and gases from the pleural cavity of a patient comprising: (a) a collection chamber having a flexible tube in fluid communication with the pleural cavity of a patient so that fluid from the patient will be directed to said collection chamber; (b) a liquid seal chamber having a pre-determined amount of liquid therein; (c) a suction chamber adapted to be connected to a source of suction and having a level of liquid therein; (d) a manifold member connected to said collection chamber, said water seal chamber and said suction chamber; (e) means on said manifold member for providing fluid communication between said collectin chamber, said water seal chamber and said suction chamber so that fluid and gases from the patient will pass to said collection chamber, gases can pass from the collection chamber to the water seal chamber and the suction chamber; (f) means for removably interconnecting said collection chamber to said manifold so as to permit removal of liquid from the collection chamber without disturbing the contents of the water seal chamber or the suction chamber; (g) means for removably interconnecting said suction chamber and said manifold so as to permit changing of the level of liquid therein; (h) a liquid retarding means in said water seal chamber for retarding liquid flow from said seal chamber to said collection chamber; and (i) said retarding means including an open ended cylindrical frame positioned within said seal chamber in fluid communication with said collection chamber, said frame member supporting a hydrophobic membraneous member which retards fluid flow from said water seal chamber to said collection chamber.

Claim 27

An underwater drainage device for removing liquids and gases from the pleural cavity of a patient comprising: (a) a collection chamber having a flexible tube in fluid communication with the pleural cavity of a patient so that fluid from the patient will be directed to said collection chamber; (b) a liquid seal chamber having a pre-determined amount of liquid therein; (c) a suction chamber adapted to be connected to a source of suction and having a level of liquid therein; (d) a manifold member connected to said collection chamber, said water seal chamber and said suction chamber; (e) means on said manifold member for providing fluid communication between said collectin chamber, said water seal chamber and said suction chamber so that fluid and gases from the patient will pass to said collection chamber, gases can pass from the collection chamber to the water seal chamber and the suction chamber; (f) means for removably interconnecting said collection chamber to said manifold so as to permit removal of liquid from the collection chamber without disturbing the contents of the water seal chamber or the suction chamber; (g) means for removably interconnecting said suction chamber and said manifold so as to permit changing of the level of liquid therein; (h) a liquid retarding means in said water seal chamber for retarding liquid flow from said seal chamber to said collection chamber; and (i) said retarding means including an open ended cylindrical frame positioned within said seal chamber in fluid communication with said collection chamber, said frame member supporting a hydrophobic membraneous member which retards fluid flow from said water seal chamber to said collection chamber.

Claim 28

An underwater drainage device for removing liquids and gases from the pleural cavity of a patient comprising: (a) a collection chamber having a flexible tube in fluid communication with the pleural cavity of a patient so that fluid from the patient will be directed to said collection chamber; (b) a liquid seal chamber having a pre-determined amount of liquid therein; (c) a suction chamber adapted to be connected to a source of suction and having a level of liquid therein; (d) a manifold member connected to said collection chamber, said water seal chamber and said suction chamber; (e) means on said manifold member for providing fluid communication between said collection chamber, said water seal chamber and said suction chamber so that fluid and gases from the patient will pass to said collection chamber, gases can pass from the collection chamber to the water seal chamber and the suction chamber; (f) means for removably interconnecting said collection chamber to said manifold so as to permit removal of liquid from the collection chamber without disturbing the contents of the water seal chamber or the suction chamber; (g) means for removably interconnecting said suction chamber and said manifold so as to permit changing of the level of liquid therein; (h) a positive pressure relief valve operatively associated with said water seal chamber; and (i) an offset funnel adapted to be used to add liquid to said water seal chamber wherein a pressure relief valve is operatively associated with said offset funnel.

Claim 29

An underwater drainage device for removing liquids and gases from the pleural cavity of a patient comprising: (a) a collection chamber having a flexible tube in fluid communication with the pleural cavity of a patient so that fluid from the patient will be directed to said collection chamber; (b) a liquid seal chamber having a pre-determined amount of liquid therein; (c) a suction chamber adapted to be connected to a source of suction and having a level of liquid therein; (d) a manifold member connected to said collection chamber, said water seal chamber and said suction chamber; (e) means on said manifold member for providing fluid communication between said collection chamber, said water seal chamber and said suction chamber so that fluid and gases from the patient will pass to said collection chamber, gases can pass from the collection chamber to the water seal chamber and the suction chamber; (f) means for removably interconnecting said collection chamber to said manifold so as to permit removal of liquid from the collection chamber without disturbing the contents of the water seal chamber or the suction chamber; (g) means for removably interconnecting said suction chamber and said manifold so as to permit changing of the level of liquid therein; (h) a positive pressure relief valve operatively associated with said water seal chamber; and (i) an offset funnel adapted to be used to add liquid to said water seal chamber wherein a pressure relief valve is operatively associated with said offset funnel.

Claim 30

An underwater drainage device for removing liquids and gases from the pleural cavity of a patient comprising: (a) a collection chamber having a flexible tube in fluid communication with the pleural cavity of a patient so that fluid from the patient will be directed to said collection chamber; (b) a liquid seal chamber having a pre-determined amount of liquid therein; (c) a suction chamber adapted to be connected to a source of suction and having a level of liquid therein; (d) a manifold member connected to said collection chamber, said water seal chamber and said suction chamber; (e) means on said manifold member for providing fluid communication between said collection chamber, said water seal chamber and said suction chamber so that fluid and gases from the patient will pass to said collection chamber, gases can pass from the collection chamber to the water seal chamber and the suction chamber; (f) means for removably interconnecting said collection chamber to said manifold so as to permit removal of liquid from the collection chamber without disturbing the contents of the water seal chamber or the suction chamber; (g) means for removably interconnecting said suction chamber and said manifold so as to permit changing of the level of liquid therein; (h) a positive pressure relief valve operatively associated with said water seal chamber, said pressure relief valve including a plurality of openings which are closed by a rubber membrane.

Claim 31

An underwater drainage device for removing liquids and gases from the pleural cavity of a patient comprising: (a) a collection chamber having a flexible tube in fluid communication with the pleural cavity of a patient so that fluid from the patient will be directed to said collection chamber; (b) a liquid seal chamber having a pre-determined amount of liquid therein; (c) a suction chamber adapted to be connected to a source of suction and having a level of liquid therein; (d) a manifold member connected to said collection chamber, said water seal chamber and said suction chamber; (e) means on said manifold member for providing fluid communication between said collection chamber, said water seal chamber and said suction chamber so that fluid and gases from the patient will pass to said collection chamber, gases can pass from the collection chamber to the water seal chamber and the suction chamber; (f) means for removably interconnecting said collection chamber to said manifold so as to permit removal of liquid from the collection chamber without disturbing the contents of the water seal chamber or the suction chamber; (g) means for removably interconnecting said suction chamber and said manifold so as to permit changing of the level of liquid therein; (h) a positive pressure relief valve operatively associated with said water seal chamber, said pressure relief valve including a plurality of openings which are closed by a rubber membrane.

Claim 32

An underwater drainage device for removing liquids and gases from the pleural cavity of a patient comprising: (a) a collection chamber having a flexible tube in fluid communication with the pleural cavity of a patient so that fluid from the patient will be directed to said collection chamber; (b) a liquid seal chamber having a pre-determined amount of liquid therein; (c) a suction chamber adapted to be connected to a source of suction and having a level of liquid therein; (d) a manifold member connected to said collection chamber, said water seal chamber and said suction chamber; (e) means on said manifold member for providing fluid communication between said collection chamber, said water seal chamber and said suction chamber so that fluid and gases from the patient will pass to said collection chamber, gases can pass from the collectin chamber to the water seal chamber and the suction chamber; (f) means for removably interconnecting said collection chamber to said manifold so as to permit removal of liquid from the collection chamber without disturbing the contents of the water seal chamber or the collection chamber; (g) means for removably interconnecting said suction chamber and said manifold so as to permit changing of the level of liquid therein; (h) liquid retarding means in said water seal chamber for retarding the flow of liquid from said water seal chamber to said collection chamber in the event of high negativity in the patient's pleural cavity; (i) means cooperating with said liquid retarding means for permitting liquid within liquid retarding means to return to said water seal chamber when the period of high negativity in the patient's pleural cavity ends; and (j) foot means in said suction chamber for reducing agitation therein, said foot means including a plurality of side-by-side openings therein.

Claim 33

An underwater drainage device for removing liquids and gases from the pleural cavity of a patient comprising: (a) a collection chamber having a flexible tube in fluid communication with the pleural cavity of a patient so that fluid from the patient will be directed to said collection chamber; (b) a liquid seal chamber having a pre-determined amount of liquid therein; (c) a suction chamber adapted to be connected to a source of suction and having a level of liquid therein; (d) a manifold member connected to said collection chamber, said water seal chamber and said suction chamber; (e) means on said manifold member for providing fluid communication between said collection chamber, said water seal chamber and said suction chamber so that fluid and gases from the patient will pass to said collection chamber, gases can pass from the collectin chamber to the water seal chamber and the suction chamber; (f) means for removably interconnecting said collection chamber to said manifold so as to permit removal of liquid from the collection chamber without disturbing the contents of the water seal chamber or the collection chamber; (g) means for removably interconnecting said suction chamber and said manifold so as to permit changing of the level of liquid therein; (h) liquid retarding means in said water seal chamber for retarding the flow of liquid from said water seal chamber to said collection chamber in the event of high negativity in the patient's pleural cavity; (i) means cooperating with said liquid retarding means for permitting liquid within liquid retarding means to return to said water seal chamber when the period of high negativity in the patient's pleural cavity ends; and (j) foot means in said suction chamber for reducing agitation therein, said foot means including a plurality of side-by-side openings therein.

Claim 34

An underwater drainage device for removing liquids and gases from the pleural cavity of a patient comprising: (a) a collection chamber having a flexible tube in fluid communication with the pleural cavity of a patient so that fluid from the patient will be directed to said collection chamber; (b) a liquid seal chamber having a pre-determined amount of liquid therein; (c) a suction chamber adapted to be connected to a source of suction and having a level of liquid therein; (d) a manifold member connected to said collection chamber, said water seal chamber and said suction chamber; (e) means on said manifold member for providing fluid communication between said collection chamber, said water seal chamber and said suction chamber so that fluid and gases from the patient will pass to said collection chamber; gases can pass from the collection chamber to the water seal chamber and the suction chamber; (f) means for removably interconnecting said collection chamber to said manifold so as to permit removal of liquid from the collection chamber without disturbing the contents of the water seal chamber or the collection chamber; (g) means for removably interconnecting said suction chamber and said manifold so as to permit changing of the level of liquid therein; (h) liquid retarding means in said water seal chamber for retarding the flow of liquid from said water seal chamber to said collection chamber in the event of high negativity in the patient's pleural cavity; (i) means cooperating with said liquid retarding means for permitting liquid within liquid retarding means to return to said water seal chamber when the period of high negativity in the patient's pleural cavity ends; and (j) said collection chamber tube includes internal ridges and a chamfered end so that fluid drains directly into said center compartment of the collection chamber.

Claim 35

An underwater drainage device for removing liquids and gases from the pleural cavity of a patient comprising: (a) a collection chamber having a flexible tube in fluid communication with the pleural cavity of a patient so that fluid from the patient will be directed to said collection chamber; (b) a liquid seal chamber having a pre-determined amount of liquid therein; (c) a suction chamber adapted to be connected to a source of suction and having a level of liquid therein; (d) a manifold member connected to said collection chamber, said water seal chamber and said suction chamber; (e) means on said manifold member for providing fluid communication between said collection chamber, said water seal chamber and said suction chamber so that fluid and gases from the patient will pass to said collection chamber; gases can pass from the collection chamber to the water seal chamber and the suction chamber; (f) means for removably interconnecting said collection chamber to said manifold so as to permit removal of liquid from the collection chamber without disturbing the contents of the water seal chamber or the collection chamber; (g) means for removably interconnecting said suction chamber and said manifold so as to permit changing of the level of liquid therein; (h) liquid retarding means in said water seal chamber for retarding the flow of liquid from said water seal chamber to said collection chamber in the event of high negativity in the patient's pleural cavity; (i) means cooperating with said liquid retarding means for permitting liquid within liquid retarding means to return to said water seal chamber when the period of high negativity in the patient's pleural cavity ends; and (j) said collection chamber tube includes internal ridges and a chamfered end so that fluid drains directly into said center compartment of the collection chamber.

Claim 36

In an underwater drainage device adapted to be connected in fluid communication with the pleural cavity of a patient, said underwater device including a plurality of chambers at least one of which receives gases and liquids from the pleural cavity of a patient, an anti-spill means comprising: (a) an enclosed manifold member having side walls and interconnecting said chambers; (b) a passage in said manifold providing communication between said chambers; (c) baffle means spaced along and extending from said side walls into said passageway; (d) said baffle means being constructed and arranged in said passageway so that there is a sinuous path between said chambers which permits gas to flow between said chambers but prevents liquid from flowing between said chambers.

Claim 37

In an underwater drainage device adapted to be connected in fluid communication with the pleural cavity of a patient, said underwater device including a plurality of chambers at least one of which receives gases and liquids from the pleural cavity of a patient, an anti-spill means comprising: (a) an enclosed manifold member having side walls and interconnecting said chambers; (b) a passage in said manifold providing communication between said chambers; (c) baffle means spaced along and extending from said side walls into said passageway; (d) said baffle means being constructed and arranged in said passageway so that there is a sinuous path between said chambers which permits gas to flow between said chambers but prevents liquid from flowing between said chambers.