Abstract:
A method for controlling evaporation and contamination of reagents used in automated diagnostic systems is disclosed as well as an apparatus for opening and closing reagent containers contained within a reagent pack having cover and cap means for such controlling of evaporation and contamination. The method comprises (a) moving reagent packs containing reagents in closed reagent containers mounted in a reagent pack carousel to an opening and closing station, (b) forcing open the evaporatively closed reagent containers contained in the reagent pack by the opening and closing station, (c) locking in an open position the reagent containers cover and cap which is affixed to the reagent containers, (d) moving the locked open reagent containers from the opening and closing station on the reagent pack carousel to a position wherein the system has access to the reagents, (e) withdrawing reagents from the reagent containers for system use, (f) returning the reagent pack and reagent containers on the reagent pack carousel to the opening and closing station, (g) unlocking the lock open cover and cap of the reagent containers, (h) force closing the cover and cap of the reagent containers of the reagent pack, and (i) removing the reagent pack from the opening and closing station.
Abstract:
A reaction vessel suitable for multiple assay utilization within an automated, continuous and random access analytical system which allows for kitting of sample and reagents and physical transfer of the kitted reaction vessel to a process carousel is disclosed. The reaction vessel comprises multiple wells of various volume capacities, the multiple wells having openings on the same plane and depths extending from said plane. The reaction vessel has at least one cuvette, which extends substantially below the multiple wells and has an opening on the same plane as the multiple wells. The reaction vessel further comprises a transfer projection on a well bottom portion of the well on a first end portion of the reaction vessel, the cuvette projecting downward from a second end portion of the reaction vessel.
Abstract:
A bubble flushing aspirating and dispensing syringe having precision and volumetric accuracy, particularly for use in an automated, continuous and random access analytical system, is disclosed. The syringe comprises a piston (124) within a bore (128), the bore having seal means at a first end and a closed end (130) at a second end, wherein the piston forms an annulus (138) with the bore wall and seal means, and is capable of reciprocating therein. Fluid inlet (134) and fluid outlet (136) means are in communication with the annulus (138) and bore, the fluid inlet and fluid outlet means being located between the seal means and the bore closed end. A fluid source is in communication with the inlet means and a fluid conduit is in communication with the outlet means and an open-ended release tip. A drive means is connected to the piston for reciprocating the piston within the bore. As a result, fluid from the inlet, when connected to a fluid supply, flows through the annulus (138) around the sides of the piston and out through the fluid outlet to the open-ended tip, thereby creating a cross-flow pattern in the annulus (138) around the piston as it reciprocates in the bore to flush bubbles through the outlet.
Abstract:
A bubble flushing aspirating and dispensing syringe having precision and volumetric accuracy, particularly for use in an automated, continuous and random access analytical system, is disclosed. The syringe comprises a piston (124) within a bore (128), the bore having seal means at a first end and a closed end (130) at a second end, wherein the piston forms an annulus (138) with the bore wall and seal means, and is capable of reciprocating therein. Fluid inlet (134) and fluid outlet (136) means are in communication with the annulus (138) and bore, the fluid inlet and fluid outlet means being located between the seal means and the bore closed end. A fluid source is in communication with the inlet means and a fluid conduit is in communication with the outlet means and an open-ended release tip. A drive means is connected to the piston for reciprocating the piston within the bore. As a result, fluid from the inlet, when connected to a fluid supply, flows through the annulus (138) around the sides of the piston and out through the fluid outlet to the open-ended tip, thereby creating a cross-flow pattern in the annulus (138) around the piston as it reciprocates in the bore to flush bubbles through the outlet.
Abstract:
The present invention relates to a method for simultaneously performing at least two assays, said assays comprising a plurality of activities, for a plurality of liquid samples on a continuous analytical system, said method comprising the steps of: combining an aliquot of a first liquid sample with at least one reagent in a first reaction container to form a first assay reaction mixture for said first liquid sample; combining an aliquot of a second liquid sample with at least one reagent in a second reaction container to form a second assay reaction mixture for said second liquid sample; incubating said first and said second assay reaction mixtures at least one time; performing activities associated with each assay other than said combining and said incubating on the first and second assay reaction mixtures to complete each assay, said other activities including analyzing the incubated assay reaction mixtures; and scheduling the steps of said combining, said incubating, and said performing activities other than said combining and said incubating associated with each of the assays according to a predetermined protocol, said protocol specifying: (a) what activities are to be performed for a given assay; (b) an order in which said activities of (a) are to be performed; (c) at least one incubation period between said activities of (a), said at least one incubation period comprising a nominal period of time for the performance of an incubating step between activities of (a) and a specified window of time for varying the duration of the nominal period between activities of (a) to optimize performance; (d) how said activities of (a) are to be performed; and (e) duration of said activities of (a).
Abstract:
The invention relates to an automated liquid level sensing system for detecting the presence of liquid in a container, said liquid level sensing system comprising: a vertically oriented, electrically conductive probe positioned above said container; means for vertically moving said probe into and out of said container; a signal source electrically connected to said probe, said signal source energizing said probe with an electrical signal and causing said probe to transmit said electrical signal; a receiving antenna positioned below said container for receiving said transmitted electrical signal; means for analyzing said received electrical signal for indications that said probe has contacted liquid in said container; means for transferring said received electrical signal from said receiving antenna to said analyzing means; and means for indicating that liquid has been detected. Further, the invention also provides for a method for automatically detecting the presence of liquid in a container, said method comprising the steps of: vertically positioning an electrically conductive probe above said container; vertically moving said probe into and out of said container; electrically connecting a signal source to said probe, said signal source energizing said probe with an electrical signal and causing said probe to transmit said electrical signal; positioning a receiving antenna below said container for receiving said transmitted electrical signal; analyzing said received electrical signal for indications that said probe has contacted liquid in said container; transferring said received electrical signal from said receiving antenna to said analyzing means; and indicating that liquid has been detected.
Abstract:
A method for controlling evaporation and contamination of reagents used in automated diagnostic systems is disclosed as well as an apparatus for opening and closing reagent containers contained within a reagent pack having cover and cap means for such controlling of evaporation and contamination. The method comprises (a) moving reagent packs containing reagents in closed reagent containers mounted in a reagent pack carousel to an opening and closing station, (b) forcing open the evaporatively closed reagent containers contained in the reagent pack by the opening and closing station, (c) locking in an open position the reagent containers cover and cap which is affixed to the reagent containers, (d) moving the locked open reagent containers from the opening and closing station on the reagent pack carousel to a position wherein the system has access to the reagents, (e) withdrawing reagents from the reagent containers for system use, (f) returning the reagent pack and reagent containers on the reagent pack carousel to the opening and closing station, (g) unlocking the lock open cover and cap of the reagent containers, (h) force closing the cover and cap of the reagent containers of the reagent pack, and (i) removing the reagent pack from the opening and closing station.
Abstract:
A cartridge feeder apparatus for automated diagnostic systems is disclosed. The apparatus comprises a cartridge hopper means for receiving, storing and feeding cartridges (68) to a cartridge orientation mechanism, the cartridge orientation mechanism comprised of two opposed engageable orientation means (239) for engaging and disengaging a cartridge at each end of the cartridge. The cartridge has a funnel opening at a first end and a generally flat bottom at a second end.