Fluid purge in a medical injection system
First Claim
1. A method to purge air or liquid from a powered injection system, the method comprising:
- driving a first pumping device in a first operational mode to inject an amount of a first liquid contrast medium through disposable tubing and a disposable valve having a contrast side and a saline side;
driving the first pumping device in a second operational mode to deform the disposable valve to create a larger space on the saline side of the valve; and
driving a second pumping device to inject an amount of a second saline liquid medium through the disposable tubing and the deformed valve, wherein;
driving the first pumping device in the first operational mode comprises driving the first pumping device in a first direction; and
driving the first pumping device in the second operational mode comprises driving the first pumping device in a second direction, and wherein the first direction is opposite to the second direction.
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Accused Products
Abstract
One embodiment of the invention provides a method to purge air or liquid from a powered injection system. In this embodiment, the method includes driving a first pumping device in a first operational mode to inject an amount of a first liquid medium through disposable tubing and a disposable valve, driving the first pumping device in a second operational mode to deform the disposable valve, and driving a second pumping device to inject an amount of a second liquid medium through the disposable tubing and the deformed valve. In one embodiment, the first pumping device comprises a first syringe, the second pumping device comprises a second syringe, and the disposable valve comprises an elastomeric valve.
30 Citations
10 Claims
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1. A method to purge air or liquid from a powered injection system, the method comprising:
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driving a first pumping device in a first operational mode to inject an amount of a first liquid contrast medium through disposable tubing and a disposable valve having a contrast side and a saline side; driving the first pumping device in a second operational mode to deform the disposable valve to create a larger space on the saline side of the valve; and driving a second pumping device to inject an amount of a second saline liquid medium through the disposable tubing and the deformed valve, wherein; driving the first pumping device in the first operational mode comprises driving the first pumping device in a first direction; and driving the first pumping device in the second operational mode comprises driving the first pumping device in a second direction, and wherein the first direction is opposite to the second direction. - View Dependent Claims (2, 3)
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4. A method to purge air or liquid from a powered injection system, the method comprising:
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extending a plunger within a first syringe to inject an amount of a first liquid contrast medium through disposable tubing and a disposable valve having a contrast side and a saline side; retracting the plunger within the first syringe to deform the disposable valve to create a larger space on the saline side of the valve; and upon retraction, extending a plunger within a second syringe to inject an amount of a second liquid saline medium through the disposable tubing and the deformed valve. - View Dependent Claims (5, 6, 7, 8, 9, 10)
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Specification