Abstract:
An article handling system and method for holding articles and moving selected articles individually from and/or to the article handling system. A plurality of vertically spaced article holding trays are mounted for independent rotation, each tray having a plurality of discrete article holding locations. A tray rotating mechanism is arranged to rotate a single selected tray, while a pick-and-place mechanism has an article gripper mounted for vertical and horizontal movement such that the gripper can reach any article holding location on any selected tray. A controller coordinates rotation of the selected tray and movement of the gripper such that the gripper can move to and from the selected article holding location. The handling system is especially useful as part of an automated system for processing multiple specimens of biological fluid in separate vials.
Abstract:
Method and apparatus for storing and dispensing articles, one at a time, from the bottom of a stack of like articles. The articles are yieldably supported in at least one upright stack above an outlet, e.g., a resilient choke, sized to pass the articles if forced therethrough. Articles are dispensed by pressing downwardly on the stack with sufficient force and for sufficient duration to overcome the yieldable supporting force and move the lowest article through the outlet. Sensors may be provided for sensing when an article is dispensed, when the tube is empty, and the type of article in the holder. The method and apparatus are especially useful in a vial-based automated system for processing multiple specimens of biological fluid, wherein a filter assembly must be dispensed into a filtration chamber associated with each specimen vial.
Abstract:
A microscope slide cassette for use with specimen handling apparatus. A plurality of opposed pairs of shelves carried by the side walls of the cassette are adapted to support specimen slides by their ends in the cassette. The shelves have a top surface on which a specimen slide can rest, and a resilient bottom surface configured to pinch the slide below against the shelf below to frictionally retain the pinched slide in the cassette. The bottom surface may comprise a spring. An inclined shelf lead-in ramp guides slides during insertion. Drainage ports in the side walls above and/or below the shelves make the cassette well suited for use in staining baths. Two laterally spaced racks on the rear wall, vertically spaced indexing marks corresponding to each slide position, and a sensor window at each slide position make the cassette well-suited for use in automated slide cassette handling mechanisms. The cassette is stackable with others for compact storage.
Abstract:
Method and apparatus for applying seals made of thin material to the open tops of containers, e.g., specimen containers for holding biological fluid that are processed automatically. A measured length of sealing material is advanced across and pressed against the top of the container (20) to effect a seal. Depending on the type of sealing material used, sealing may be accomplished by application of pressure alone, by application of heat and pressure, or by application of ultrasonic energy and pressure. Excess sealing material optionally may be folded against the container sides by means of a folding member adapted to surround a container (20) when the sealing head is lowered. Motor-driven rollers advance the sealing material, while a platen (854) on a movably mounted sealing head presses the sealing material into engagement with the container.
Abstract:
Method and apparatus for storing and dispensing articles, one at a time, from the bottom of a stack of like articles. The articles are yieldably supported in at least one upright stack above an outlet, e.g., a resilient choke, sized to pass the articles if forced therethrough. Articles are dispensed by pressing downwardly on the stack with sufficient force and for sufficient duration to overcome the yieldable supporting force and move the lowest article through the outlet. Sensors may be provided for sensing when an article is dispensed, when the tube is empty, and the type of article in the holder. The method and apparatus are especially useful in a vial-based automated system for processing multiple specimens of biological fluid, wherein a filter assembly must be dispensed into a filtration chamber associated with each specimen vial.
Abstract:
A method and apparatus for collecting a cell sample of desired concentration on a filter collection site from a biological liquid specimen in a container. Specimen liquid is moved through a filter while the volume rate of liquid flow through the filter is monitored. The monitored liquid flow rate is compared to a reference value, and liquid flow through the filter is terminated when the ratio value. The predetermined ratio value preferably is a function of the protocol for processing the specimen. An alternative method and apparatus relies on the rate of change of the measured weight of the container. This rate is compared to a reference value, and liquid flow through the filter is terminated when the rate of change diminishes to or below a predetermined value.
Abstract:
A method and apparatus for collecting a cell sample of desired concentration on a filter collection site from a biological liquid specimen in a container. Specimen liquid is moved through a filter while the volume rate of liquid flow through the filter is monitored. The monitored liquid flow rate is compared to a reference value, and liquid flow through the filter is terminated when the ratio value. The predetermined ratio value preferably is a function of the protocol for processing the specimen. An alternative method and apparatus relies on the rate of change of the measured weight of the container. This rate is compared to a reference value, and liquid flow through the filter is terminated when the rate of change diminishes to or below a predetermined value.