Abstract:
A positive displacement pump (1) is equipped with a pump cylinder (2), a pump piston (7), a cylinder space (9), a pressure sensor (10), and a pressure channel (12). A main portion (13) of the pressure channel (12) extends parallel to a longitudinal axis (3) of the pump cylinder (2), for providing fluidic connection between the cylinder space (9) and the pressure sensor (10). In the improved alternative positive displacement pump (1), the cylinder wall (4) comprises a piston sleeve (14) that is located on the inner side of the cylinder wall (4) and that extends over essentially the entire length of the pump cylinder (2) to the cylinder bottom (5). The improved alternative positive displacement pump (1) is further characterized in that, the main portion (13) of the pressure channel (12) is located in the cylinder wall (4) comprising the piston sleeve (14), which is thus preventing the pump piston (7) from touching or compromising the pressure sensor (10) or an inner surface (30) of the cylinder wall (4) when moving past the position of the pressure sensor (10). Also disclosed are a liquid handling robot that comprises a single or multiple arrangement of the positive displacement pump (1) and liquid handling workstation that comprises such a liquid handling robot.
Abstract:
A slide transfer mechanism for a laser scanner device (1) is proposed. The laser scanner device (1) is configured for imaging and/or measuring fluorescent samples which are located in a sample plane (49) on sample slides (8). The laser scanner device (1) comprises a motor-drivable sample table (2) for holding a sample slide (8); a first optical system (53) for providing at least one laser beam (54); a scanner apparatus (72) for deflecting the laser beam (54) toward the sample, wherein the scanner head (50) is configured to be moveable back and forth in a direction of a scanning axis or X axis of a coordinate system. The laser scanner device (1) also comprises at least one detector (61) for detecting an emission beam bundle (59) coming from the sample and a second optical system (58) for forwarding the emission beam bundle (59) to the at least one detector (61). The slide transfer mechanism of the laser scanner device (1) is characterized in that it comprises a motorized transport device (3) that is configured for transferring a sample slide (8) from a storage unit (4) of the laser scanner device (1) to the sample table (2) and back, and in that the sample table (2), for the purpose of transferring sample slides (8), is configured so as to be able to move to immediately before the storage unit (4) for the sample slides (8) or before a loading opening (100) of an additional housing (29).
Abstract:
The invention concerns a system (1) to locate or track objects (2) that can be positioned on the work table (3) of a laboratory apparatus (4). To do this, the system (1) comprises at least: a) a central transmitter (5) with the capability to transmit and receive radio frequency (RF) signals, convert RF signals received and transfer the converted signals to a computer (7); b) a local unit (6) mounted on a surface (8) of the work table (3) with the capability to receive and transmit RF signals; c) radio frequency identification (RFID) tags (10) to be affixed to the local unit (6) and to articles of laboratory ware (15) that are to be identified and/or located or tracked; d) a work table (3) of a laboratory apparatus (4) and a computer (7) that can be connected to the laboratory apparatus (4) and is linked to the central transmitter (5) via an interface, the computer (7) having the capability to communicate with the central transmitter (5), to process signals received from the latter and to address selected RFID tags (10) through the central transmitter (5). The system (1) according to the invention can be integrated in a higher-ranking logistical system (31) for the processing and analysis of samples of any desired kind.
Abstract:
Microplate reader (21) with a computer for controlling the components of said microplate reader (21), comprising a light source (15) for emitting light for irradiating samples (22) or transmitting light through samples (22), and a filter slide (1) situated in the excitation or detection beam path. The microplate reader (21) in accordance with the invention is characterized in that said filter slide (1) comprises an electronic memory (4) for recording and/or retrieving filter-specific data, with said filter-specific data comprising the number and intensity of the light flashes impinging upon a certain filter (2) of said filter slide (1) and/or the intensity and duration of all exposures performed, and that said filter slide (1) comprises a contact point (5,7) jointly with the microplate reader (21) for transmitting such filter-specific data from the computer to the electronic memory (4) of the filter slide (1) and for retrieving such filter-specific data with the computer. According to the method in accordance with the invention for acquiring filter-specific data in a filter slide (1) of such a microplate reader (21), filter-specific data which comprise the number and intensity of the light flashes impinging upon a specific filter (2) of said filter slide (1) and/or the intensity and duration of all exposures performed are transmitted by the computer via a contact point common to said filter slide (1) and the microplate reader (21) to an electronic memory (4) of said filter slide (1) and/or are retrieved with the computer from said electronic memory (4).
Abstract:
A pipetting apparatus (1) comprises a fluidic space (7), to which a pressure transducer (11) with a pressure sensor (12) is attached with a gas filled space (15). The fluidic space (7) is defined by a pipette tip (2), a first tubing (5) that connects the pipette tip (2) to a pump (4), and an active part (6) of the pump (4). The pipetting apparatus (1) according to the present invention is characterized in that the pipetting apparatus (1) further comprises an impulse generating means (16, 18, 19) that is in operative contact with a column (10) of system liquid (8) inside the fluidic space (7). The impulse generating means (16, 18, 19) is designed to induce a vertical movement in this system liquid column (10), which results in a pressure variation in the gas filled space (15) that is pneumatically connected with the fluidic space (7). This pressure variation—as recorded with the pressure transducer (11) and as processed by a first data processing unit (13) during utilization of this pipetting apparatus—is taken as an indicator for the detection of penetration or of quitting of a surface (17) of a liquid, with an orifice (3) of the pipette tip (2), of which liquid an amount is to be aspirated and dispensed. This pressure variation is also taken as an indicator for the detection of the presence or the absence of gas bubbles in the system liquid (8) contained in the fluidic space (7) of this pipetting apparatus.
Abstract:
An optical system and method of exciting and measuring fluorescence on or in samples treated using fluorescent pigments using such an optical system having at least one first laser (1); a mirror (4); a deflection element (7); an optic (8); and a unit (10), which includes mirror (4) and optic (8) mounted fixed in relation to one another. The unit (10) is positioned so it is linearly movable back and forth along the optical axis (5) and is mechanically connected to an oscillating linear drive (11). The optic (8) additionally acts as a collimator and the mirror (4) additionally acts to deflect the collimated light (12) parallel to the optical axis (5).
Abstract:
This invention relates to methods and apparatus for performing microanalytic and microsynthetic analyses and procedures. The invention provides a microsystem platform and a micromanipulation device for manipulating the platform that utilizes the centripetal force resulting from rotation of the platform to motivate fluid movement through microchannels. These assays may be performed for a variety of purposes, including but not limited to screening of drug candidate compounds, life sciences research, and clinical and molecular diagnostics. Methods specific for the apparatus of the invention for performing any of a wide variety of microanalytical or microsynthetic processes are provided.
Abstract:
A method of treating an isolated area of a sample with a liquid is disclosed. The method has the steps of generating an isolated area of a sample by a first fluid reservoir where the first fluid reservoir enclosing a distal end of a second fluid reservoir and the isolated area of the sample being sealed towards the remaining area of the sample, bringing the isolated area of the sample into fluid connection with the second fluid reservoir, dispensing a fluid from the second fluid reservoir into the first fluid reservoir thereby generating a fluid flow on the sample at the isolated area in a first direction, and aspirating the fluid from the first fluid reservoir into the second fluid reservoir thereby generating a fluid flow on the sample at the isolated area in a second direction.
Abstract:
A guiding frame for a laboratory automation device comprises: a bottom side for placing the guiding frame on a component of the laboratory automation device; a top side with a position detection area; and an opening for accessing a port of the component, which opening is arranged besides the position detection area. The position detection area has two recesses, each recess having two straight edges, which from a view direction onto the top side are arranged inclined with respect to each other. The bottom side comprises alignment means for aligning the guiding frame with respect to the component, the alignment means comprising a base surface for contacting a top surface of the component and/or guiding surfaces for contacting walls of the component.
Abstract:
FIG. 1 is a side perspective view of a pipetting tip according to a first embodiment of my new design; FIG. 2 is a top and side perspective view thereof; FIG. 3 is a bottom plan view thereof; FIG. 4 is a top plan view thereof; FIG. 5 is front elevation view thereof; FIG. 6 is a rear elevation view thereof; FIG. 7 is a left side elevation view thereof; FIG. 8 is a right side elevation view thereof; FIG. 9 is a side perspective view of a pipetting tip according to a second embodiment my new design; FIG. 10 is a top and side perspective view thereof; FIG. 11 is a bottom plan view thereof; FIG. 12 is a top plan view thereof; FIG. 13 is front elevation view thereof; FIG. 14 is a rear elevation view thereof; FIG. 15 is a left side elevation view thereof; and, FIG. 16 is a right side elevation view thereof.