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US 7,803,217 B2Granted
Bubble trap for high flow rate infusion
AssigneeArizant Healthcare Inc.
InventorsRandall C. Arnold, Mark T. Bieberich, Gary L. Hansen, Andrew J. McGregor, Christopher A. Miller
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Abstract
A bubble trap for separating and collecting air and bubbles from a high flow rate stream of infusate includes multiple flow chambers to collect air, a sensor support mounted to one of the chambers, an air vent disposed in one of the chambers, and a valve in fluid communication with the chambers to control the flow of infusate therethrough.
Claims8
A method for removing air from a stream of infusate using a multi-chambered apparatus, comprising:
- receiving a stream of infusate;
- reducing the flow rate of the stream of infusate by expanding the stream into a first chamber:
- cascading the stream of infusate from the first chamber into a second chamber;
- circulating the infusate in the second chamber;
- forming infusate circulating in the second chamber into a laminar stream of infusate in a third chamber;
- forming an output stream of infusate from the laminar flow of infusate in a fourth chamber;
- providing the output stream to an outlet through a valve;
- collecting air from the infusate in at least the first, second, and third chambers;
- venting the air from the apparatus;
- sensing the fluid contents of the apparatus;
- and,
- closing the valve if air is sensed;
- otherwise opening the valve.
10 more elements
Dependencies are inferred from the claim text.