Abstract: A control system controlling the line pressure in a blood supply system (1) in which a pump (14) pumps blood from a reservoir (10) via a primary passage (18) toward a plurality of outlets (16, 26, 26a), wherein one or more outlets are openable to permit flow and closable to block flow, said control system comprises a monitoring arrangement to determine a line pressure in the primary passage, and a controller responsive to the monitoring arrangement and controlling the pump (14) to maintain the line pressure in the primary passage (18) above a pre-set level. The control system practically eliminates the risk of a momentary reduction in blood supply line pressure when an outlet is opened.

Abstract: A control system controlling the blood flow rate in a blood supply system (1) in which a pump (18) transports blood from a reservoir (10) toward multiple outlets (30, 26, 26a) of which one or more outlets are openable to permit flow and closable to block flow, wherein the control system comprises a monitoring arrangement (22, 32, 32a) to determine the flow rate through a first outlet (30), and a controller responsive to the monitoring arrangement and controlling the pump (18) to maintain the flow rate through the first outlet (30) at a pre-determined level. This allows a flow rate through the first outlet to be maintained independently of any active blood diversions.

Abstract: A cardioplegic agent delivery system comprises a supply reservoir (40) for a cardioplegic agent carrier fluid, a delivery channel from the supply reservoir (40) to an outlet (48), and a pump (50) to flow the carrier liquid in the delivery channel above a minimum driving pressure. The supply reservoir (40) is configured to hold carrier fluid below the minimum driving pressure. The pump (50) is a centrifugal pump configured to receive carrier fluid from the supply reservoir (40) and to flow the carrier fluid to the outlet (48) at a flow rate and above the minimum driving pressure for the delivery of cardioplegic agent. This allows cardioplegia delivery to be managed better.

Abstract: Methods and systems for single molecule sequencing using concatemers of copies of sense and antisense strands. Concatemers are provided, for example, by carrying out rolling circle amplification on a circular molecule having sense and antisense regions to produce repeated copies of the sense and antisense regions connected by linking regions. The circular molecules can be produced by ligating hairpin adapters to each end of a double-stranded nucleic acid having a sense and antisense strand. The ligations can be carried out, for example using blunt end ligation. In some cases, a single molecule consensus sequence for a single template molecule is obtained. A single read from each template molecule can be obtained by comparing the sequence information of the sense and antisense regions.

Abstract: Methods are provided for sequencing of nucleic acid templates using nanopores. A polymerase-nucleic acid complex having a strand displacing polymerase is provided. The nucleic acid in the polymerase-nucleic acid complex is a circular nucleic acid template. Components required for nucleic acid synthesis are provided whereby the polymerase produces a nascent strand that passes through the nanopore while the nascent strand is produced. Current through the nanopore over time is measured allowing for the determination of the sequence of the nascent strand as it translates through the pore using the measured current over time. Because the polymerase can proceed around the circular template multiple times, multiple reads corresponding to the same sequence in the circular template can be obtained in one sequencing process. Where modified bases are present in the template, the method can be used to determine the presence and position of the modified bases using the kinetics of the polymerase.

Abstract: Optical analytical devices and their methods of use are provided. The devices are useful in the analysis of highly multiplexed optical reactions in large numbers at high densities, including biochemical reactions, such as nucleic acid sequencing reactions. The devices include optical waveguides for illumination of the optical reactions. The devices further provide for the efficient coupling of optical excitation energy from the waveguides to the optical reactions. Optical signals emitted from the reactions can thus be measured with high sensitivity and discrimination using features such as spectra, amplitude, and time resolution, or combinations thereof. The devices of the invention are well suited for miniaturization and high throughput.

Abstract: Disclosed are various examples for provisioning a client device through near-field communication (NFC). An administrator device can provide configuration parameters to a client device in a factory-reset condition through an NFC bump. A second NFC bump can be performed that provides enrollment parameters to the client device, after which the client device can complete enrollment with an enterprise mobility management (EMM) service.

Abstract: Sequencing methods, devices, and systems are described. Arrays of nanoscale electronic elements comprising two electrodes separated by an insulating layer are used to provide sequence information about a template nucleic acid in a polymerase-template complex bound proximate to the insulating region. A sequencing reaction mixture comprising nucleotide analogs having impedance labels is introduced to the array of nanoscale electronic elements under conditions of polymerase mediated nucleic acid synthesis. The time sequence of incorporation of nucleotide analogs is determined by identifying the types of labels of the nucleotide analogs that are incorporated into the growing strand using measured impedance.

Abstract: Methods, compositions and arrays for non-random loading of single analyte molecules into array structures are provided. For example, methods are presented for providing a surface comprising the plurality of array regions by exposing the surface to a solution comprising polymerase enzymes where each polymerase enzyme is bound to a binding structure having several functional moieties. The functional moieties of the binding structure react with the binding elements on the array regions such that the functional moieties on the binding structure react with other available binding sites in an array region, preventing other polymerase-binding structures from loading, and resulting in a single polymerase molecule bound to each of these regions.

Abstract: A control system for controlling a quantity of blood in a blood reservoir (10) of a perfusion system supplied by a venous line (V), wherein a pump (20) circulates blood from the blood reservoir (10) through an outgoing line(A), comprises a venous flow sensor (22) to measure a venous blood flow rate,an outlet flow sensor (24) to measure an outgoing blood flow rate, and a controller to control the pump (20) to prevent the outgoing blood flow rate from exceeding the venous blood flow rate. Thereby,a decrease of blood in the blood reservoir(10) can be arrested.

Abstract: An analytical assembly within a unified device structure for integration into an analytical system. The analytical assembly is scalable and includes a plurality of analytical devices, each of which includes a reaction cell, an optical sensor, and at least one optical element positioned in optical communication with both the reaction cell and the sensor and which delivers optical signals from the cell to the sensor. Additional elements are optionally integrated into the analytical assembly. Methods for forming and operating the analytical system are also disclosed.

Abstract: Methods, compositions, and systems are provided for characterization of modified nucleic acids. In certain preferred embodiments, single molecule sequencing methods are provided for identification of modified nucleotides within nucleic acid sequences. Methods are provided that include linking forward and reverse strands of a double stranded segment to form circular template molecules, and obtaining sequence data from the circular template molecule to identify modified bases, for example including the use of bisulfite treatment. Modifications detectable by the methods provided herein include chemically modified bases, enzymatically modified bases, abasic sites, non-natural bases, secondary structures, and agents bound to a template nucleic acid.

Abstract: Methods of producing substrates having selected active chemical regions by employing elements of the substrates in assisting the localization of active chemical groups in desired regions of the substrate. The methods may include optical, chemical and/or mechanical processes for the deposition, removal, activation and/or deactivation of chemical groups in selected regions of the substrate to provide selective active regions of the substrate.

Abstract: The invention relates to devices and methods for nanopore sequencing. The invention provides devices having an array of nanopores. The devices comprise an upper fluidic region in fluidic contact with the nanopores. The upper fluidic region comprises and upper electrode. Below each nanopore, and in fluidic contact with each nanopore is a discrete fluidic region. There is no direct fluidic contact between these discrete fluidic regions. The devices have an advantage of lower levels of electrical cross-talk between nanopores in the array for improved nucleic acid sequencing.

Abstract: Disclosed are various examples for provisioning a client device through near-field communication (NFC). An administrator device can provide configuration parameters to a client device in a factory-reset condition through an NFC bump. A second NFC bump can be performed that provides enrollment parameters to the client device, after which the client device can complete enrollment with an enterprise mobility management (EMM) service.

Abstract: Methods and systems for single molecule sequencing using concatemers of copies of sense and antisense strands. Concatemers are provided, for example, by carrying out rolling circle amplification on a circular molecule having sense and antisense regions to produce repeated copies of the sense and antisense regions connected by linking regions. The circular molecules can be produced by ligating hairpin adapters to each end of a double-stranded nucleic acid having a sense and antisense strand. The ligations can be carried out, for example using blunt end ligation. In some cases, a single molecule consensus sequence for a single template molecule is obtained. A single read from each template molecule can be obtained by comparing the sequence information of the sense and antisense regions.

Abstract: A blood gas analysis method (100) is provided for determining the partial pressure of oxygen of arterial blood exiting an oxygenator, wherein the oxygenator generates arterial blood by exposing venous blood to an oxygenation gas and releases excess oxygenation gas as exhaust gas. The method (100) comprises a step (140) of determining an estimate of the partial pressure of oxygen in the exhaust gas, a step (150) of determining the blood oxygen uptake in the oxygenator, and a step (160) of determining the partial pressure of oxygen in the arterial blood by adjusting the estimate using the blood oxygen uptake value. Used in a clinical setting, the method (100) allows a more accurate output of the partial pressure of oxygen in the arterial blood to be provided, which facilitates oxygenator operation.

Abstract: The present invention provides methods and compositions useful for supplying high throughput nucleic acid sequencing systems with templates. The methods circumvent the need for costly, labor-intensive cloning and cell culture methods and can be scaled to accommodate template production for a variety of sequencing applications, e.g., sequencing individuals' genomes, sequencing subpopulations of transcripts from a gene of interest, and/or gene expression profiling. Particularly preferred embodiments of the methods vastly improve the preparation of cDNA from mRNA samples, e.g., by randomizing errors introduced during the process, thereby allowing these errors to be readily distinguished from true variants present in the mRNA samples.

Abstract: The present invention provides methods, compositions, and systems for distributing molecules and complexes into reaction sites. In particular, the methods, compositions, and systems of the present invention result in an active loading of molecules and complexes into reaction sites with improved efficiency over loading by passive diffusion methods alone.

Abstract: The invention relates to devices and methods for nanopore sequencing. The invention includes arrays of nanopores having incorporated electronic circuits, for example, in CMOS. The invention includes devices having sample and reference pores connecting sample, measurement and reference chambers, wherein potential measurements in each chamber is used to provide an accurate determination of current through a sample nanopore, improving nanopore sequencing.