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US 8,317,738 B2Granted
Liquid collection container and extracorporeal circuit
AssigneeTerumo Kabushiki Kaisha
InventorsNorikazu Ishida, Hidetaka Nakayama
Life of this patent
Estimating the term…
Abstract
A liquid collection bag is used as a part of an extracorporeal circuit and is connected via a tube to a storage container containing a priming solution. The collection container collects the priming solution from the storage container by a pressure differential between the pressure inside the collection container and the pressure inside the storage container. The liquid collection container is a flexible bag body having a partition part dividing the inside of the bag body into a first space and a second space. In addition, a communication part communicates the first space with the second space.
Claims20
A method of priming a circuit to be used in extracorporeal blood circulation, the method comprising:
- connecting a blood reservoir of the circuit to a source of priming solution that is not blood, the blood reservoir possessing a bottom, the circuit comprising:
- an oxygenator, an arterial line connected to the oxygenator, a pump, a first line connecting in a fluid communicating manner the pump and the bottom of the blood reservoir, a second line connecting in a fluid communicating manner the pump and the oxygenator, a venous line connected to the blood reservoir, a flexible collection container possessing an interior, and a third line branching from the venous line and having an open end opening into the interior of the collection container;
- positioning the collection container so that the open end of the third line is positioned elevationally below an objective height in the blood reservoir;
- introducing the priming solution that is not blood into the blood reservoir from the source while the third line is closed, the priming solution flowing from the blood reservoir through the first line, through the pump, through the second line, through the oxygenator and through the arterial line;
- and
- opening the third line after the priming solution in the blood reservoir is elevationally at or above the objective height so that the priming solution automatically flows into the collection container.
3 more elements
A method of priming a circuit to be used in extracorporeal blood circulation, the method comprising:
- connecting a blood reservoir of the circuit to a source of priming solution, the blood reservoir possessing a bottom, the circuit comprising:
- an oxygenator, an arterial line connected to the oxygenator, a pump, a first line having one end connected to the pump and an other end connected to the bottom of the blood reservoir to connect the pump and the blood reservoir to one another in a fluid communicating manner, a second line having one end connected to the pump and an opposite end connected to the oxygenator to connect the pump and the oxygenator to one another in a fluid communicating manner, a venous line connected to the blood reservoir, a flexible collection container possessing an interior, and a third line having one end connected to the venous line at a position spaced from the blood reservoir so that the third line and the venous line fluidly communicate with one another and an opposite end which is open into the interior of the collection container;
- positioning the collection container so that the open second end of the third line is positioned elevationally below an objective height inside the blood reservoir;
- introducing the priming solution into the blood reservoir from the source before introducing any blood into the blood reservoir and while the third line is closed, the priming solution flowing from the blood reservoir through the first line, through the pump, through the second line, through the oxygenator and through the arterial line;
- and
- opening the third line after the priming solution in the blood reservoir is elevationally at or above the objective height so that the priming solution automatically flows into the interior of the collection container by way of the third line.
3 more elements
A method of priming a circuit to be used in extracorporeal blood circulation, the method comprising:
- connecting a blood reservoir of the circuit to a source of priming solution, the blood reservoir possessing a bottom, the circuit comprising:
- an oxygenator, an arterial line connected to the oxygenator, a pump, a first line connecting in a fluid communicating manner the pump and the bottom of the blood reservoir, a second line connecting in a fluid communicating manner the pump and the oxygenator, a venous line connected to the blood reservoir, a flexible collection container possessing an interior, and a third line having a first end opening into the venous line at a position spaced from the blood reservoir and having an oppositely located open second end positioned in the interior of the collection container;
- positioning the collection container so that the open second end of the third line is positioned elevationally below an objective height inside the blood reservoir;
- introducing the priming solution into the blood reservoir from the source before introducing any blood into the blood reservoir and while the third line is closed, the priming solution flowing from the blood reservoir into the first line, from the first line into the pump, from the pump into the second line, from the second line into the oxygenator, and from the oxygenator into the arterial line, and wherein the priming solution does not enter the collection container while the third line is closed;
- and
- opening the third line after the priming solution in the blood reservoir is elevationally at or above the objective height so that the priming solution automatically flows into the collection container by way of the third line.
3 more elements
Dependencies are inferred from the claim text.