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US 2010/0300293 A1Published application
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
Life of this patent
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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.
Claims20
A bubble trap for removing air from a stream of infusate, comprising:
- a housing;
- an inlet in the housing;
- a first chamber means in the housing for reducing the flow rate of a stream of infusate from the inlet;
- a second chamber means in the housing for receiving a cascade of infusate from the first chamber means and circulating the cascading infusate;
- a third chamber means in the housing for forming circulating infusate into a laminar flow of infusate;
- a fourth chamber means in the housing for forming an output stream of infusate from the laminar flow of infusate;
- an outlet in the housing, the outlet in fluid communication with the fourth chamber means;
- a valve in the housing, the valve having a first state blocking the flow of the output stream to the outlet and a second state permitting the flow of the output stream to the outlet;
- and
- an air vent in the housing.
7 more elements
An apparatus for eliminating air from a stream of fluid, comprising:
- a housing, containing:
- a first, upwardly directed, flow section with an upwardly expanding flow path and a downwardly curved flow section in fluid communication with the upwardly expanding flow section;
- an input in a lower portion of the upwardly expanding flow path;
- a second, widened flow section in fluid communication with the downwardly curved flow section;
- a third flow section defining a laminar fluid flow path in fluid communication with the second flow section;
- a fourth flow section, positioned below the first, second, and third flow sections and in fluid communication with the third flow section;
- an output;
- a valve acting between the fourth flow section and the output;
- air vent means for venting air collected in the housing;
- and,
- at least one sensor coupler mounted to an outside surface of the housing.
8 more elements
Dependencies are inferred from the claim text.