METHODS AND APPARATUS FOR MEASURING ASPIRATION PRESSURE

An aspiration apparatus adapted to allow aspiration verification of a liquid such as of a biological liquid or reagent liquid, especially at low aspiration volumes (e.g., less than 25 μL). The apparatus includes a pump operable at an operating frequency, the pump optionally including a pumping chamb...

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Bibliographische Detailangaben
1. Verfasser:	Zordan Enrico
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS TESTING TRANSPORTING
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Beschreibung
Zusammenfassung:	An aspiration apparatus adapted to allow aspiration verification of a liquid such as of a biological liquid or reagent liquid, especially at low aspiration volumes (e.g., less than 25 μL). The apparatus includes a pump operable at an operating frequency, the pump optionally including a pumping chamber, a probe having a probe interior, a main supply line containing a backing liquid coupled to and extending from the pump and including the probe interior, a striction coupled to the main supply line, or the pump chamber, if present, and a reservoir fluidly coupled to the striction, wherein the striction is sized to minimize backing liquid flow through the striction at one or more disturbance frequencies above the operating frequency. Systems and methods for carrying out the liquid aspiration are provided, as are other aspects.