Back to results
US 2013/0277316 A1Published application
Acoustophoretic separation of lipid particles from red blood cells
AssigneeFloDesign Sonics, Inc.
InventorsBrian Dutra, Bart Lipkens
Life of this patent
Estimating the term…
Abstract
A system for removing lipids from blood during cardiopulmonary bypass surgery is disclosed. The system uses an acoustophoretic separator having improved trapping force. The transducer of the acoustophoretic seperator includes a ceramic crystal. Blood flows through the separator, and lipids are trapped and removed.
Claims17
A method of separating lipids from blood, the method comprising:
- flowing the blood through a flow chamber, wherein the flow chamber has a source of acoustic energy and, on an opposing side of the flow chamber, a reflector of acoustic energy, and wherein the blood contains lipids;
- activating the source of acoustic energy to create a plurality of incident waves in the blood;
- reflecting the plurality of incident waves from the reflector, creating a plurality of reflected waves resonating with the incident waves, thus forming a plurality of standing waves;
- and
- removing lipids trapped in the standing waves from the blood.
2 more elements
An apparatus comprising:
- a flow chamber with an inlet and an outlet through which is flowed blood containing lipids;
- an ultrasonic transducer on a wall of the flow chamber, the transducer including a ceramic crystal that defines a side of the transducer, the transducer being driven by an oscillating, periodic, or pulsed voltage signal of ultrasonic frequencies which drives the transducer to create standing waves in the flow chamber;
- and
- a reflector located on a wall on the opposite side of the flow chamber from the transducer.
1 more element
Dependencies are inferred from the claim text.