WASH RING ASSEMBLY AND METHOD OF USE
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Accused Products
Abstract
Devices, including a wash ring assembly, and methods are provided for the removal of excess fluid or solids from the exterior or interior of a probe used to transfer fluids, for instance, in an automated assay device. Typically, a probe is used to aspirate and dispense a sample fluid material such as whole blood or a reagent. The devices and methods provided herein are useful for removing excess fluid from the exterior or interior of the probe so as to prevent dripping and cross-contamination between samples or reagents. It is also contemplated that, utilizing the devices and methods provided herein, washing and/or drying can be performed simultaneously as the probe is in motion, aspirating a sample and/or dispensing a sample.
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Citations
19 Claims
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1-17. -17. (canceled)
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18. A method for cleaning a probe in a robotic aspiration and dispensing system as the probe is in motion, aspirating and/or dispensing, the method comprising:
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providing a wash ring comprising; a top surface, a bottom surface, a side surface, an inner surface forming a bore comprising an upper portion with an opening in the top surface and a lower portion with an opening in the lower surface, an inlet port comprising an opening in the side surface and an opening in the upper bore portion; and
an outlet port comprising an opening in the side surface and an opening in the lower bore portion,a probe assembly comprising a probe, wherein a portion of a probe to be washed is present in the bore forming a capillary between the probe and the inner surface of the bore. adding fluid into the bore of the wash ring through the inlet port; removing fluid by suction from the bore of the wash ring through the outlet port; wherein the adding fluid and removing fluid steps can be performed as the probe is in motion, aspirating and/or dispensing. - View Dependent Claims (19)
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Specification