118results about How to "Reduce instrument cost" patented technology

A flexible medical intubation instrument provided for placement into an animal or human patient comprises a catheter with at least a pair of longitudinally extending lumens or channels including a sensor and/or actuator channel and a working channel. In the sensor/actuator channel is provided a fixed or slideably removable sensor cable having a sensor for sensing a characteristic or condition including any of the following: a visual sensor for optical viewing, a chemical sensor, a pH sensor, a pressure sensor, an infection sensor, an audio sensor, or a temperature sensor. The sensors are coupled by the sensor/actuator cable through light transmission, electric current, or radio transmission to a viewing instrument or other output device such as a meter or video screen for displaying the condition that is sensed within the body of the patient while the flexibility of the composite structure comprising the catheter and cable enable the entire instrument to flex laterally as it moves through curved passages or around obstructions during insertion or removal. While making observations through the sensor channel, the working channel simultaneously functions as a drain or an irrigation duct, a feeding tube, or to provide a passage for the insertion of one or a succession of surgical devices such that the catheter serves as a protective artificial tract or liner as surgical devices are inserted and removed through it in succession so as to minimize tissue trauma, infection, and pain experienced by the patient. The instrument can be used in urology, as well as a visually directed nasogastric tube, as a visually directed external gastrostomy tube, or as a visually directed internal gastric tube or percutaneous endoscopic gastrostomy tube and in other applications.

A gripping apparatus is provided that includes a sensor, an actuator, a base, and a plurality of fingers extending relative to the base to grip an object that is one of a plurality of object types. A first finger includes a first support surface located a first distance relative to the base and a second support surface located a second distance relative to the base. The first distance is selected based on a first object type, and the second distance is selected based on a second object type. The second finger includes a third support surface located the first distance relative to the base and a fourth support surface located the second distance relative to the base. The first finger opposes the second finger. The actuator is operably coupled to the sensor(s) to effect movement at least one of the fingers to hold an object detected by the sensor.

The present invention provides apparatus, kits and methods for assaying analytes using photoelectrochemical molecules as labels. Specifically, the present invention provides a method for assaying an analyte, comprising: a) contacting a sample suspected of containing an analyte with a reactant capable of binding and/or reacting with the analyte under suitable conditions to allow binding of analyte, if present in the sample, to the reactant; and b) assessing binding and/or reacting between the analyte and the reactant to determine presence and/or amount of analyte in the sample, wherein the reactant, analyte, or additional reactant or additional analyte or analyte analog is labeled with a photoelectrochemically active molecule. The assessing step also comprises converting the photoelectrochemically active molecule with light to an excited state in the presence of an electrode, and assessing an electric current generated by an electron transfer between the excited photoelectrochemically active molecule and the electrode.

A planar patch-clamp cartridge includes a common ground electrode through a conductive medium reaching into each extracellular chamber. The cartridge is first primed with intracellular solution injected from dispensing tips inserted from above into the intracellular chambers. Then the cartridge is rotated 180 degrees, whereby the intracellular and extracellular chambers assume face-down and face-up positions, respectively. Extracellular solution is then delivered using the same dispensing unit. A plurality of silver tubes engages the intracellular chambers at the end of the rotation to provide electrical conductivity and suction to the intracellular chambers.

A jitter generator for generating a jittered clock signal, includes a jitter control signal generator and a jittered clock generator. The jitter control signal generator is utilized for selecting a digital control code from a plurality of candidate digital control codes at individual time points and respectively outputting a plurality of selected digital control codes. The jittered clock generator is coupled to the jitter control signal generator, and utilized for generating the jittered clock signal. The jittered clock generator dynamically adjusts the jittered clock signal according to the plurality of different digital control codes.

The invention provides an analysis measuring method for brominated flame-retardant in a plastic component of a deserted household electrical appliance, relating to the technology for fast identifying and analyzing the brominated flame-retardant in the plastic component of the deserted household electrical appliance. A collected sample of the plastic component of the deserted household electrical appliance is processed by coarse and fine grinding and screen separation and then is dissolved in the dissolvent and uniformly dispersed on the surface of a colloidal silica particle; an automatic Soxhelt's extractor is used for extracting the brominated flame-retardant in the sample; and finally, a high efficiency liquid chromatography (matched with a diode array detector) is used for qualitative/quantitative analysis. The method has the advantages of simple operation of extraction and purification, low consumption of dissolvent, high speed of analysis, accurate qualitative and quantitative determination, low limit of detection and wide range of concentration of detection, solves the technical problem that the solubility is limited during the detection of the brominated flame-retardant by the high efficiency liquid chromatography, and is suitable for the safe identification and the accurate detection of two kinds of brominated flame-retardants, namely polybrominated diphenyl ethers (PBDEs) and polybrominated biphenyls (PBBs) in the plastic components of various deserted household electrical appliances, such as a television, an electric refrigerator, a washing machine, a computer, a water drinking machine, etc.

A bar code for measurement and the measurer, every code element consisting of a pair of light and shade fringe, the width of code element is fixed value, the boundary position of code element is fixed, the light an dshade code element representing zero code in binary, the opposite phase code of said code element representing 1 code in binary, the zero and 1 code arranged according to conventional rule and forming the bar code for measurement.

The invention discloses an ion sample introduction method which comprise the steps of arranging sample introduction valves on ion channels of a multi-channel array ion trap, opening part of the sample introduction valves between ion sources and a vacuum cavity in a timed alternate opening manner, allowing ions to enter the vacuum cavity through the sample introduction valves, and accomplishing an ion sample introduction process. The invention further discloses a multi-channel array ion trap mass spectrum system which comprise ion sources, ion transmission capillary tubes, sample introduction valves, a vacuum cavity, a vacuum pump system, an array ion trap mass analyzer and an ion detector, wherein the front ends of the ion transmission capillary tubes are connected with the ion sources; the rear ends of the ion transmission capillary tubes are connected with the vacuum cavity; the sample introduction valves are arranged on the ion transmission capillary tubes; the vacuum pump system is connected with the vacuum cavity; and the vacuum cavity is internally provided with the array ion trap mass analyzer and the ion detector sequentially. The method and equipment can improve sample introduction efficiency and mass spectrum resolution.

The invention relates to a tobacco shred blending uniformity determination method based on combination of a chromatic value and an entropy weight method. Chromaticity values L *, a * and b * of the formula tobacco shreds taken at different time points are measured by adopting a color difference meter, variable coefficients of three chromaticity values of an evaluation sample are calculated, then each chromaticity value is weighted by using an entropy weight method to obtain a comprehensive variable coefficient of the three chromaticity values of the evaluation sample, finally a method for calculating the tobacco shred blending uniformity is established according to the comprehensive variable coefficient of the chromaticity values, and the test result of the method is compared with an industrial standard method. The result shows that the variable coefficient of the precision test for determining the tobacco shred blending uniformity by combining the chromaticity value with the entropy weight method and the variable coefficient of the repeatability test meet the requirements of quantitative analysis. Compared with an industrial standard method, the method has the advantages that thedetermination result of the tobacco shred blending uniformity has no significant difference, and the variable coefficient of the test result is smaller. The method has the advantages of simple operation, no chemical addition, high precision and good repeatability, and is suitable for accurate determination of the tobacco shred blending uniformity.

The invention relates to a method for chiral separation of various side chain protected amino acids, and aims to solve the technical problems that a mobile phase system used in an HPLC (high performance liquid chromatography) chiral separation system is complex and chiral HPLC columns are instable. According to the technical scheme, the method is characterized by including the steps of a, dissolving four racemates in methanol and water solution, performing ultrasonic treatment, filtering, and taking filtrate for standby; b, allowing well balanced chiral HPLC columns to respectively absorb the filtrate which is sent to the HPLC system, allowing a chromatographic work station to acquire chiral separation chromatograms, and checking separation parameters to acquire amino acid separation effects. Mobile phase used by the method is a common reagent in HPLC. A HPLC instrument needs no other instruments, cost is saved, and the various side chain protected amino acids can be chirally separated fast.

The invention discloses a linear rapid dual-temperature PCR amplification automatic control device and a control method. A linear transfer transport module is installed on a multi-tank water bath pot,a control circuit board is connected to the transfer transport module and an upper computer module, and a sample container fixing disc is installed on the transfer transport module; a visualized fluorescence detection device is adsorbed onto the outer wall of the multi-tank water bath pot by a magnet piece, a sample container comprises a container used for installing a PCR eight-connected tube, aPCR capillary tube, a capillary pipet and a centrifuge tube; and two thermostatic sample pools are respectively arranged corresponding to a denaturation phase and an extension phase, the transfer transport module controls the sample container of the sample container fixing disc to circularly transfer back and forth and to stay in the thermostatic sample pools in a denaturation phase and an extension phase, and multiple circulation in two temperature zones is performed. The device realizes rapid double-temperature PCR amplification of multiple samples and multiple circulation, greatly shortensthe detection time, and is low in production cost, convenient to install, high in universality, small in size and easy to carry.

The invention discloses a novel solid-state matrix switch system. A main switch module comprises a downlink channel, wherein radio frequency signals are input from the ANT, and then are output to PM after passing through the channel switch A and a downlink matrix switch; an uplink channel, wherein radio frequency signals are input from SG, and are divided into eight paths of independent radio frequency signals through a 1-8 broadband power dividing circuit, and is transmitted to an ANT through an uplink additional matrix switch, a channel switch B and a channel switch A; an additional channel,wherein radio frequency signals are input from the SG, and after passing through the power divider circuit, are transmitted to the BANT after passing through the uplink additional matrix switch and the channel switch B; a calibration and backup channel, wherein the radio frequency signals are respectively input from the CAL, the BAK1, and BAK2, and are transmitted to the PM after entering into the calibration and backup matrix switch; a micro-strip coupling circuit, wherein the radio frequency signals are input from an SG end, and output in the form of two paths of signals after passing through the micro-strip coupling circuit, wherein one path of main path signal enters into the power dividing circuit, and the signal after coupling sampling is output to the Couple.

The present description relates to a remote connection system suitable for being incorporated in an aircraft (1A, 1B, 1C) comprising at least one engine propeller (50A, 50B, 50C) having a plurality of blades (52A, 52B, 52C) suitable for rotating relative to a stationary module (10A, 10B, 10C) of the aircraft about an engine axis (X). The remote connection system comprises: a light emitter device configured, when the remote connection system is incorporated in the aircraft (1A, 1B, 1C), to emit a light beam that emerges to the outside of the propeller (50A, 50B, 50C), from at least one emission surface (54A, 54B, 54C) of said propeller (50A, 50B, 50C).

The invention provides an optical fiber sensing-based laser excitation heat wave signal detection device, comprising a pumping laser light source, a detection laser light source, a focusing lens and optical fiber. The optical fiber is used to transmit a pumping laser beam and a detection laser light beam, the same focusing lens is used to converge the two beams, and the detection laser light beam reflected or transmitted by a sample is received by also using the optical fiber at a detection end, so that the structure of a whole light path system is greatly simplified, instrument microminiaturization and portability can be realized, instrument cost is greatly reduced, and the popularization and application of a laser excitation heat wave signal detection technology are facilitated.