Device and system for draining a body cavity and methods related thereto
First Claim
1. A drainage device comprising:
- at least two chambers, a pressure regulation chamber and a collection chamber, being fluidly coupled by means of a vent pathway;
wherein the vent pathway includes an intermediate chamber and at least first and second passages, each passage being in fluid communication with the interior of the intermediate chamber;
wherein an opening is provided in the first passage, distal from the intermediate chamber, to fluidly couple the first passage and the pressure regulation chamber;
wherein an opening is provided in the second passage, distal from the intermediate chamber, to fluidly couple the second passage and the collection chamber; and
wherein the first passage and the second passage are arranged so an axis of the first passage and an axis of the second passage are each at an angle with respect to a front surface of the drainage device.
5 Assignments
0 Petitions
Accused Products
Abstract
Featured is a device for draining fluids and/or gas from body cavities, including at least a pressure control chamber and a collection chamber being fluidly coupled by a one-way valve thereby establishing a waterless seal between the collection chamber, including the patient, and the suction source. The pressure control chamber also includes a waterless suction pressure control regulator that controls and maintains the suction pressure at or about a selected value. Preferably, the regulator includes a spring operated valve. The device also includes a vent path arrangement having an intermediate chamber and at least two passages that are perpendicular to two adjacent surfaces within the intermediate chamber. The two passages and intermediate chamber are arranged so liquid in the collection chamber does not flow and contaminate the upstream portions of the device when the device is resting on its front side or backside. Also featured is an autotransfusion system including a drainage device and a bag assembly attached thereto. The device and bag assembly are fluidly coupled so the differential pressure established by the device causes the blood from the patient to drain into the bag assembly. In an alternate embodiment, the drainage device is configured to continuously collect and filter a patient'"'"'s blood and continuously output it for re-infusion back into the patient.
114 Citations
37 Claims
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1. A drainage device comprising:
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at least two chambers, a pressure regulation chamber and a collection chamber, being fluidly coupled by means of a vent pathway; wherein the vent pathway includes an intermediate chamber and at least first and second passages, each passage being in fluid communication with the interior of the intermediate chamber; wherein an opening is provided in the first passage, distal from the intermediate chamber, to fluidly couple the first passage and the pressure regulation chamber; wherein an opening is provided in the second passage, distal from the intermediate chamber, to fluidly couple the second passage and the collection chamber; and wherein the first passage and the second passage are arranged so an axis of the first passage and an axis of the second passage are each at an angle with respect to a front surface of the drainage device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 36, 37)
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18. A drainage device comprising:
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at least two chambers, a pressure regulation chamber and a collection chamber, being fluidly coupled by means of a vent pathway; wherein the vent pathway includes an intermediate chamber and at least first and second passages, each passage being in fluid communication with the interior of the intermediate chamber; wherein an opening is provided in the first passage, distal from the intermediate chamber, to fluidly couple the first passage and the pressure regulation chamber; wherein an opening is provided in the second passage, distal from the intermediate chamber, to fluidly couple the second passage and the collection chamber; and wherein the first passage and the second passage are arranged so the first and second passages traverse between the respective passage opening and the intermediate chamber in a generally front to back direction. - View Dependent Claims (19)
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20. A drainage device comprising:
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at least two chambers, a pressure regulation chamber and a collection chamber, and three ports, where one of the ports, the drain line port is in fluid communication with the collection chamber; a suction pressure regulator valve that selectively controls the suction pressure, being developed within the pressure regulation chamber and being applied to the collection chamber, to a selected one of a number of predetermined suction pressure levels; wherein the pressure regulation chamber includes two compartments that are selectively and fluidly interconnected to each other by means of the pressure regulation valve, where one of the ports, the atmospheric port, is in fluid communication with one compartment and another one of the ports, the suction line port, is in fluid communication with the other of the regulation chamber compartments and a suction source; wherein the pressure regulation value includes a mechanism for biasing the regulation valve closed when the suction pressure of the suction pressure level, thereby isolating the suction line port from the atmospheric port, and for opening the valve when the suction pressure of the suction source exceeds the selected predetermined suction pressure level, whereby the atmospheric port is fluidly interconnected to the second compartment so as to maintain the suction pressure being applied at about the selected predetermined suction pressure level; and wherein the pressure regulation chamber and the collection chamber are in selective fluid communication with each other by means of a one-way valve disposed therebetween, where in one position the one-way valve isolates the regulation and collection chambers from each other so gas does not flow to the collection chamber and where, in another position, the one-way valve puts the chambers in fluid communication with each other so suction pressure from the pressure regulation chamber is applied to the collection chamber to thereby cause the drainage of fluids from a body cavity. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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28. An autotransfusion system comprising a drainage device and a bag assembly removably secured thereto, wherein the drainage device includes:
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at least two chambers, a pressure regulation chamber and a collection chamber, and three ports, where one of the ports, the drain line port is in fluid communication with the collection chamber; a suction pressure regulator valve that selectively controls the suction pressure, being developed within the pressure regulation chamber and being applied to the collection chamber, to a selected one of a number of predetermined suction pressure levels; wherein the pressure regulation chamber includes two compartments that are selectively and fluidly interconnected to each other by means of the pressure regulation valve, where one of the ports, the atmospheric port, is in fluid communication with one compartment and another one of the ports, the suction line port, is in fluid communication with the other of the regulation chamber compartments and a suction source; wherein the pressure regulation valve includes a mechanism for biasing the regulation valve closed when the suction pressure of the suction source is less than the selected predetermined suction pressure level, thereby isolating the suction line port from the atmospheric port, and for opening the valve when the suction pressure of the suction source exceeds the selected predetermined suction pressure level, whereby the atmospheric port is fluidly interconnected to the second compartment so as to maintain the suction pressure being applied at about the selected predetermined suction pressure level; and wherein the pressure regulation chamber, the collection chamber and the bag assembly are in selective fluid communication with each other by means of a one-way valve disposed therebetween, where in one position the one-way valve isolates the regulation chamber from the bag assembly and the collection chamber so gas does not flow to the collection chamber and the bag assembly and where, in another position, the one-way valve puts the chambers and bag assembly in fluid communication with each other so suction pressure from the pressure regulation chamber is applied to the collection chamber to thereby cause the drainage of fluids from a body cavity to the bag assembly. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35)
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Specification