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2046 results about "Main channel" patented technology
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Microfabricated Cell Sorter
InactiveUS20080176211A1Efficient separationIncrease chanceImmobilised enzymesSludge treatmentInlet channelCell sorter
Owner:CALIFORNIA INST OF TECH
Microfluidic device for forming monodisperse lipoplexes
ActiveUS20070264320A1Laboratory glasswaresCarbohydrate active ingredientsLipid formationInlet channel
A method for forming monodisperse lipoplex assemblies includes providing a microfluidic device having a main microfluidic channel coupled to first and second reactant inlet channels. The first inlet channel is used to deliver a cationic lipid to the main channel while the second channel is used to deliver a nucleic acid. A droplet generation zone is provided in the main channel at the intersection of first and second carrier channels that contain a hydrophobic fluid. The cationic lipid, nucleic acid, and the hydrophobic fluid are then pumped through the device. In the droplet generation zone, shear force from the hydrophobic fluid pinches off droplets. The cationic lipid and nucleic acid are mixed in the generated droplets as the droplets move within a mixing region. A plurality of splitting channels may be coupled to the outlet of the device to produce smaller, monodisperse droplets having picoliter volumes.
Owner:RGT UNIV OF CALIFORNIA
Bifurcated side-access intravascular stent graft
InactiveUS20080109066A1Readily and accurately positionedStentsBlood vesselsStent graftingMain channel
A bifurcated intravascular stent graft comprises primary stent segments and a primary graft sleeve, forming a main fluid channel and having a side opening therethrough. An external graft channel formed on the primary graft sleeve has a first end communicating with the side opening and an open second end outside the primary graft sleeve, thereby providing a branch flow channel from the main channel out through the side opening and external graft channel. The primary stent segments and graft sleeve engage an endoluminal surface of a main vessel and form substantially fluid-tight seals. The stent graft further comprises a secondary stent graft, which may be positioned partially within the external graft channel, through the open second end thereof, and partially within a branch vessel. The secondary stent graft engages the inner surface of the external graft channel and the endoluminal surface of the branch vessel, thereby forming substantially fluid-tight seals.
Owner:WL GORE & ASSOC INC
Microfabricated Crossflow Devices and Methods
ActiveUS20090035838A1High sensitivityIncrease the number ofBioreactor/fermenter combinationsFixed microstructural devicesMain channelBiological materials
A microfluidic device for analyzing and / or sorting biological materials (e.g., molecules such as polynucleotides and polypeptides, including proteins and enzymes; viruses and cells) and methods for its use are provided. The device and methods of the invention are useful for sorting particles, e.g. virions. The invention is also useful for high throughput screening, e.g. combinatorial screening. The microfluidic device comprises a main channel and an inlet region in communication with the main channel at a droplet extrusion region. Droplets of solution containing the biological material are deposited into the main channel through the droplet extrusion region. A fluid different from and incompatible with the solution containing the biological material flows through the main channel so that the droplets containing the biological material do not diffuse or mix. Biological material within the droplets can be analyzed and / or sorted by detecting a predetermined characteristic of the biological sample in each droplet and sorting the droplet accordingly.
Owner:CALIFORNIA INST OF TECH
Oxide semiconductor device and method of manufacturing the same and active matrix substrate
InactiveUS20100140614A1High content ratioImprove contact effectTransistorSolid-state devicesActive matrixThreshold potential
A phenomenon of change of a contact resistance between an oxide semiconductor and a metal depending on an oxygen content ratio in introduced gas upon depositing an oxide semiconductor film made of indium gallium zinc oxide, zinc tin oxide, or others in an oxide semiconductor thin-film transistor. A contact layer is formed with an oxygen content ratio of 10% or higher in a region from a surface, where the metal and the oxide semiconductor are contacted, down to at least 3 nm deep in depth direction, and a region to be a main channel layer is further formed with an oxygen content ratio of 10% or lower, so that a multilayered structure is formed, and both of ohmic characteristics to the electrode metal and reliability such as the suppression of threshold potential shift are achieved.
Owner:HITACHI LTD
Microfabricated cell sorter
InactiveUS7214298B2High sorting rateEfficient separationSludge treatmentVolume/mass flow measurementInlet channelCell sorter
The invention provides a microfabricated device for sorting cells based on a desired characteristic, for example, reporter-labeled cells can be sorted by the presence or level of reporter on the cells. The device includes a chip having a substrate into which is microfabricated at least one analysis unit. Each analysis unit includes a main channel, having a sample inlet channel, typically at one end, and a detection region along a portion of its length. Adjacent and downstream from the detection region, the main channel has a discrimination region or branch point leading to at least two branch channels. The analysis unit may further include additional inlet channels, detection points, branch points, and branch channels as desired. A stream containing cells is passed through the detection region, such that on average one cell occupies the detection region at a given time. The cells can be sorted into an appropriate branch channel based on the presence or amount of a detectable signal such as an optical signal, with or without stimulation, such as exposure to light in order to promote fluorescence.
Owner:CALIFORNIA INST OF TECH
Method for fabricating 3d-nonvolatile memory device
InactiveUS20120231593A1Solid-state devicesSemiconductor/solid-state device manufacturingMain channelIsolation layer
A method for fabricating a 3D-nonvolatile memory device includes forming a sub-channel over a substrate, forming a stacked layer over the substrate, the stacked layer including a plurality of interlayer dielectric layers that are alternatively stacked with conductive layers, selectively etching the stacked layer to form a first open region exposing the sub-channel, forming a main-channel conductive layer to gap-fill the first open region, selectively etching the stacked layer and the main-channel conductive layer to form a second open region defining a plurality of main channels, and forming an isolation layer to gap-fill the second open region.
Owner:SK HYNIX INC
Micro liquid control system
InactiveUS20050103690A1Increase speedSignificant processingElectrostatic separationBurettes/pipettesControl systemElectrical polarity
Owner:AISIN SEIKI KK
Method and system for surround sound beam-forming using vertically displaced drivers
ActiveUS20070263888A1Quality improvementCompact solutionMicrophonesSignal processingAudio power amplifierMain channel
A method and system for surround sound beam-forming using vertically displaced drivers provides a low cost alternative to present external surround array systems. A pair of vertically displaced speaker drivers is supplied with surround and main channel information in a controlled phase relationship with respect to each driver such that the surround channel information is propagated in a directivity pattern substantially differing from that of the main channel information. The main channel information is generally directed at a listening area, while the surround channel information is directed away from the listening area and is substantially attenuated in the direction of the listening area, so that the surround channel information is heard as a diffuse reflected field. An electronic network provides for control of the surround channel phase relationship and combining of main and surround signals for providing inputs to individual power amplifiers for each driver.
Owner:CIRRUS LOGIC INC
Apparatus and method for trapping bead based reagents within microfluidic analysis systems
The present invention provides an on-chip packed reactor bed design that allows for an effective exchange of packing materials such as beads at a miniaturized level. In accordance with the present invention, there is provided a method of concentrating an analyte within a microfluidic analysis system, comprising the steps of: a) providing a main channel having a trapping zone suitable for trapping packing material; b) providing a slurry of a reagent treated packing material prepared in a solution having a predetermined composition of a solvent; c) inducing a flow of said packing material into said trapping zone through a flow channel connected to said trapping zone so as to load said trapping zone and form a packed bed of said packing material; d) and flowing a sample containing analytes through said packed bed, said reagent acting to concentrate at least some of said analytes within said trapping zone. The present invention extends the function of microfluidic analysis systems to new applications including on-chip solid phase extraction (SPE) and on-chip capillary electrochromatography (CEC). The design can be further extended to include integrated packed bed immuno- or enzyme reactors.
Owner:THE GOVERNORS OF THE UNIV OF ALBERTA
Distributed database for analytical instruments
InactiveUS7155344B1Promote generationAccurate recordCellsWithdrawing sample devicesMain channelEngineering
Techniques for controlling analytical instruments are provided. A sequence of steps can be utilized to specify wells of a microfluidic device, mobility to be applied to fluid in the wells, and the duration to apply the mobility. For example, fluids can be sequentially run past down a main channel to a detection zone of the microfluidic device in order to analyze the fluids. In order to increase the efficiency of the analysis, fluids can be processed in parallel by running one fluid down the main channel while another fluid is loaded to the main channel.
Owner:CAPLIPER LIFE SCI INC
Distributed database for analytical instruments
InactiveUS7343248B2Promote generationAccurate recordCellsWithdrawing sample devicesMain channelEngineering
Owner:CAPLIPER LIFE SCI INC
Anchor having fill port for use with an implantable therapy delivery element
InactiveUS20100174240A1Generally messyGenerally time-consumingSpinal electrodesInfusion needlesAdhesiveMain channel
An anchor for securing a therapy delivery element in a desired location within a living body is disclosed. The anchor includes an anchor body having a space, which may be a main channel, to receive the therapy delivery element. A fill port is provided in the anchor body to introduce an adhesive into the space when the therapy delivery element is positioned within the space. In one embodiment, the fill port is coupled to a fill port extension that transfers the adhesive from a dispenser located a distance from the fill port into the space. Multiple fill ports, any of which may be coupled to a respective fill port extension, may be provided to introduce the adhesive at various locations of the space. One or more of the fill ports may extend into multiple side channels to introduce the adhesive at various locations of the space.
Owner:MEDTRONIC INC
Method and apparatus for overlaying graphics on video
Information received on a side channel from a TV content source is placed in a graphics plane of a TV and overlaid onto a video plane of the TV, which contains content from a main channel. The graphics plane content in each side channel may be keyed to content ratings setting so that the TV selects the side channel appropriate for a user-input rating setting of the TV and overlays the content of the side channel onto the video plane, to thereby conform the composite image that is displayed on the TV to the viewer-input ratings setting.
Owner:SONY CORP +1
Rotary fluid coupler
A system for delivering a flow of breathing gas to a patient that includes a main delivery conduit coupled to a gas source, and a rotary coupling device coupled to the main delivery conduit and having a first member and a second member, the first member defining a first channel and a second channel through the first member, the second member defining a third channel and a fourth channel through the second member. The first channel is in communication with the third channel to define a main channel having a main path, and the second channel is in communication with the fourth channel to define a secondary channel separate from the main channel and having a secondary path. The first member and the second member are structured to freely ro tate relative to one another in a manner that separately maintains the main path and the secondary path.
Owner:KONINKLJIJKE PHILIPS NV
Particle-Based Microfluidic Device for Providing High Magnetic Field Gradients
InactiveUS20100044232A1Bioreactor/fermenter combinationsElectrostatic separatorsParticulatesMagnetic field gradient
A microfluidic device for manipulating particles in a fluid has a device body that defines a main channel therein, in which the main channel has an inlet and an outlet. The device body further defines a particulate diverting channel therein, the particulate diverting channel being in fluid connection with the main channel between the inlet and the outlet of the main channel and having a particulate outlet. The microfluidic device also has a plurality of microparticles arranged proximate or in the main channel between the inlet of the main channel and the fluid connection of the particulate diverting channel to the main channel. The plurality of microparticles each comprises a material in a composition thereof having a magnetic susceptibility suitable to cause concentration of magnetic field lines of an applied magnetic field while in operation. A microfluidic particle-manipulation system has a microfluidic particle-manipulation device and a magnet disposed proximate the microfluidic particle-manipulation device.
Owner:RGT UNIV OF CALIFORNIA
Customizable chip and method of manufacturing the same
InactiveUS20070099290A1Easy to useImprove performanceBioreactor/fermenter combinationsBiological substance pretreatmentsMain channelEngineering
The present invention provides an analysis chip allowing customization in accordance with the items required for a given test, and method for producing the same. On a chip (313) there are formed dispensing channels (222) connected to respective detection reservoirs (223) and branching off from a main channel (221). Each branch channel (222) is provided with a flow control unit (314) responsible for an opening and closing of the channel. It is possible to achieve multiple analysis steps by appropriately setting an opening and closing of flow control units provided to an analysis portion.
Owner:NEC CORP
Array speaker apparatus
InactiveUS20070110268A1Good sound imageEnhance the imageMicrophonesTransducers for sound channels pluralityMain channelEngineering
An array speaker apparatus SParray includes a first radiation means for driving speaker units so that a first sound S1 of a main channel is radiated to a wall surface W1 on the left or right side of a listening position, and a second radiation means for driving the speaker units so that a second sound S2 the same as the first audio signal is radiated directly to the listening position.
Owner:YAMAHA CORP
Microfluidic device with network micro channels
A microfluidic device has a plurality of H-shaped micro channels not connected to each other and formed on a substrate. Each of the H-shaped micro channels comprises two main channels separately placed on two opposite sides in parallel and a plurality of sub-channels perpendicularly connected to the two main channels. The present invention is designed in such a way that various reagents dropped into different H-shaped micro channels are immobilized on respective sub-channels because of the different widths of the main channel and sub-channel. Afterwards the reagents are coated with a layer of polymer. The polymer has a porous structure that allows the passage of any sample to be tested. Finally, a plurality of upper channels parallel to one another are directly fabricated in the polymer, or in another layer of polymer stacked on the previous polymer.
Owner:NATIONAL TSING HUA UNIVERSITY
Radiant floor heating and cooling system clip
ActiveUS6969832B1Durable and reliable constructionLower sales pricePipe supportsLighting and heating apparatusMain channelEngineering
A radiant heating and cooling system clip for positioning a tube and construction support wire with one hand comprising an interior having a main channel for positioning a tube with a narrowing second channel within said main channel for positioning a wire.
Owner:MEYER ENTERPRISES
Valved connector with closure operated by axial movement of the valve
InactiveUS7335182B1Safely introducedSimple actionCheck valvesHaemostasis valvesMain channelEngineering
A valved connector apparatus is described having an integral opening and closing system operated by axial movement of the valve. The body of the valved connector apparatus is in a Y-shaped configuration with a main channel and a lateral channel branching off of the main channel. A normally dosed, passive hemostasis valve is housed in a valve body that is slidably connected to the proximal end of the main channel. The hemostasis valve is opened by sliding the valve body distally with respect to the Y-shaped connector body so that a cylindrical extension extending from the proximal end of the Y-shaped connector body penetrates a central opening in the hemostasis valve, creating an open passage for insertion of guidewires, catheters or other instruments. The valved connector apparatus allows safe introduction of extremely flexible or fragile guidewires, catheters or other instruments.
Owner:ARTHESYS
Devices and methods for oligonucleic acid library synthesis
ActiveUS20160310927A1Sequential/parallel process reactionsMicrobiological testing/measurementMain channelCombinatorial chemistry
Devices and methods for de novo synthesis of large and highly accurate libraries of oligonucleic acids are provided herein. Devices include structures having a main channel and microchannels, where the microchannels have a high surface area to volume ratio. Devices disclosed herein provide for de novo synthesis of oligonucleic acids having a low error rate.
Owner:TWIST BIOSCI
Micro-fluidic chip for multi-index detection
ActiveCN103831140AEvenly distributedFully coveredMicrobiological testing/measurementLaboratory glasswaresFluorescenceWave shape
The invention discloses a micro-fluidic chip for multi-index detection. The micro-fluidic chip comprises a substrate and a cover plate which is matched with the substrate in a sealed mode, wherein a through hole is formed in the center of the micro-fluidic chip; one or more wave-shaped main channels are formed in the substrate; one end of each main channel is communicated with a sample introduction hole formed in the substrate, and the other end of each main channel is communicated with an air outlet in the substrate; wave troughs of the main channels are arranged away from the direction of the through hole; wave crests of the main channels are arranged close to the direction of the through hole; any one wave trough of the main channel is communicated with a reaction pool through a connecting pipeline; a buffer pool is arranged on the connecting pipeline. The micro-fluidic chip can be detected by instruments through fluorescence, turbidity and development or is directly observed by naked eyes, can be detected in the reaction process in real time and also can be detected after the reaction is ended.
Owner:BOAO BIOLOGICAL CO LTD +1
Medical port, blood hose for use in an extracorporeal blood treatment as well as medical treatment appratus
ActiveUS20130030348A1Improve protectionSimple and reliable snap-on retainerInfusion devicesDialysis systemsBlood treatmentsMain channel
A medical port includes a main channel with a lumen to conduct a first fluid through the port, a secondary channel aperture of a secondary channel to add a second fluid in the main channel, at least one housing element and at least one actuation element arranged to be transferable relative to the housing element from a first position into a second position, a seal section, which is arranged to be rotatable between a first position of the seal section, in which the seal section does not close, seal or cover the secondary channel aperture and a second position of the seal section, in which the seal section closes, seals or covers the secondary channel aperture, when the actuation element is transferred from the first position to the second position. A blood hose including at least one port, and a medical treatment apparatus are also described.
Owner:FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
Microscale capacitive deionization apparatus
ActiveUS20080023333A1Little chanceFlexibility in production sizeElectrolysis componentsElectrostatic separatorsCapacitanceCapacitive deionization
The present device is a microchannel separator that uses a separation driving force created by an electric field. An ionic fluid flows through the microchannels and is subjected to an electric field by two spaced apart parallel electrodes possessing an electric charge. The ions in the ionic fluid are attracted towards the charged electrodes and thus are concentrated in the region of flow near the charged electrodes and depleted from the central region of flow between the charged electrodes. The charged electrodes are insulated from the ionic fluid by an impermeable barrier which prevents arcing and adherence of the ions to the charged electrodes. After a sufficient length of passage of the ionic fluid through a main channel two blocking plates separate the flow into a central and two outer output channels. The central channel draws a portion of the ionic fluid from the central region of the main channel that has fewer ions than the ionic fluid in the regions near the charged electrodes. The concentrated ionic fluid in the outer channels is discharged separately from the central channel.
Owner:VECENERGY AEGIR
Seamless switching method for video source
InactiveCN105100644AAchieve a natural transitionSeamless switching supportTelevision system detailsColor television detailsImaging processingVideo processing
The invention relates to a seamless switching method for a video source and is applied to a video processor which is configured with a main channel, and a PIP (picture in picture) channel and is suitable for connecting a first video source and a second video source, wherein the method comprises the steps as follows: a) receiving a video source switching instruction; b) starting output of a PIP channel, displaying a picture of the first video source output by the PIP channel in the top and completely covering the picture of the first video source output by the main channel; c) switching the input source of the main channel from the first video source to the second video source; d) setting an image processing parameter of the main channel and outputting a picture display parameter while the signal of the second video source is stable and waiting of the signal is not over-timed, and displaying the picture of the second video source output by the main channel in the top according to appointed picture switching special effect; and e) closing the output of the PIP channel. Therefore, the method of the invention could solve the problem of short blank screen and stiff switching effect in the video source switching process in prior art, and could realize the switching special effect of a plurality of pictures.
Owner:XIAN NOVASTAR TECH
Devices and methods for oligonucleic acid library synthesis
ActiveUS9981239B2Sequential/parallel process reactionsMicrobiological testing/measurementMain channelCombinatorial chemistry
Devices and methods for de novo synthesis of large and highly accurate libraries of oligonucleic acids are provided herein. Devices include structures having a main channel and microchannels, where the microchannels have a high surface area to volume ratio. Devices disclosed herein provide for de novo synthesis of oligonucleic acids having a low error rate.
Owner:TWIST BIOSCI
Carrier sense method and system
InactiveCN102595569AReduce power consumptionPower managementEnergy efficient ICTClear to sendMain channel
The invention discloses a carrier sense method and a system. According to the method, a transmitting terminal sends an idle channel to assess clear channel assessment (CCA) request frames on a main channel of a transmission channel which needs to be detected; the transmitting terminal sends request to send (RTS) frames on the transmission channel which needs to be detected after sending a point coordination function inter-frame space (PIFS) subsequent to transmission of the CCA request frame; and the transmitting terminal performs data transmission on the transmission channel transmitting clear to send (CTS) frames after receiving an indication that CTS frames are permitted to send. The invention also discloses the carrier sense system, which comprises a transmitting terminal and a receiving terminal. According to the method and the system, the power consumption of the receiving terminal is reduced and reliable CCA results of all transmission channels are provided.
Owner:HUAWEI TECH CO LTD
Interference mitigation in through the wall radar
ActiveUS20130249730A1Reduce multipath interferenceSuppress multipath interferenceRadio wave reradiation/reflectionGuard channelRadar systems
This invention relates to sense through the wall radar. A main channel of a radar system (12) is operated at a frequency capable of penetrating opaque barriers such as the wall (24) of a building (22) to sense targets (16) therein. The main channel performance may be impaired by multipath interference, i.e., radar returns resulting from targets (20) outside the building (22) illuminated by reflection from the wall (24). A guard channel of the radar, operating at a higher frequency which does not penetrate the wall (24), is used to identify targets (20) outside the building (22) and suppress the multipath interference they produce in the main channel.
Owner:RAYTHEON CO
Air Packaging Device Product and Method for Forming the Product
ActiveUS20090242450A1Improve buffering effectLower the volumeWrappersBag making operationsMain channelEngineering
An air packaging device comprises two layers of thermoplastic films, which form a sealable space where air is fulfilled after a 1st and a 2nd steps of heat-sealing process, includes a number of independent sealed air chambers and a main air passage channel. The main channel has an air inlet. Each sealed air chamber is connected with the main channel by at least one of one-way valves each consists of at least two layers of plastic films. At least two of one-way valves are installed inside of the air chambers. This air packaging device increases the cushioning protection where the protection is most needed, but can reduce air chamber dimension at the less important location in order to reduce the volumetric size and hence reduce the shipping cost.
Owner:SHANGHAI NILU INT IMPORT & EXPORT
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