Contrast Injection System and Method for Pre-Stressing Tubing
AssigneeACIST Medical Systems, Inc.
InventorsYun Zhou, Vomsheendhur Raju
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Abstract
Some contrast injection systems use relatively-large inner diameter tubing to inject contrast fluid into a patient. The contrast injection system of the embodiments presented herein takes advantage of the elastic properties of tubing to “pre-stress” smaller inner diameter tubing into larger inner diameter tubing prior to injecting contrast into the patient. As such, the contrast injection system of these embodiments can reduce the risk of system-pressure-limit-induced injection interruption, improve maximum flow rate, and reduce the use of plastics.
Claims20
An injection system comprising:
- one or more processors;
- a non-transitory computer-readable medium;
- and
- program instructions stored on the non-transitory computer-readable medium that, when executed by the one or more processors, cause the one or more processors to:
- perform an air-purging operation by supplying a fluid at a first pressure into a tubing connected to the injection system;
- and
- perform a pre-stressing operation on the tubing by causing pressure in the patient line to increase to a second pressure greater than the first pressure.
A method for pre-stressing a patient line, the method comprising:
- performing in an injection system prior to injecting fluid in a patient:
- applying fluid under pressure to purge air from a patient line;
- increasing pressure in the patient line to expand an inner diameter of the patient line;
- and
- after the inner diameter of the patient line has been expanded, injecting fluid through the patient line and into the patient.
An injection system comprising:
- means for priming a tubing used with the injection system;
- and
- means for deforming the tubing by expanding its inner diameter before the tubing is used by the injection system to inject a fluid in a patient.
Dependencies are inferred from the claim text.