185 results about "Dipstick" patented technology

An assay device, a fluid analyte sample separator device and methods for use of thereof for determining whether the integrity of a fluid analyte sample has been compromised and for contemporaneously assaying the sample for the presence or absence of multiple analytes, such as drugs of abuse. The device is composed of a housing having separate slots therein for insertion of one or more analyte test strips, one end of which protrudes from the housing, and one or more units of a sample integrity monitoring system. The device may be used in dipstick or cassette form. An analyte sample separator for division of sample and retention of uncontaminated sample for further testing is also provided. The analyte test strips and sample integrity monitoring system are replaceable, so that the panel of analytes and of sample condition parameters tested can be customized.

An assay device, a fluid analyte sample separator device and methods for use of thereof for determining whether the integrity of a fluid analyte sample has been compromised and for contemporaneously assaying the sample for the presence or absence of multiple analytes, such as drugs of abuse. The device is composed of a housing having separate slots therein for insertion of one or more analyte test strips, one end of which protrudes from the housing, and one or more units of a sample integrity monitoring system. The device may be used in dipstick or cassette form. An analyte sample separator for division of sample and retention of uncontaminated sample for further testing is also provided. The analyte test strips and sample integrity monitoring system are replaceable, so that the panel of analytes and of sample condition parameters tested can be customized.

Color-based reaction testing of biological materials may be performed by capturing, in an uncalibrated environment, a digital image of an exposed test strip, together with an adjacently-located reference color chart or on-strip color chart. The image data specifically representing the individual test pads on the test strip, as well as the reference color blocks on the reference chart, are then located within the captured image, and compared to identify any color matches between the test pads and the corresponding sequences of reference color block. Based on this comparison operation, a set of test results can be generated which effectively identifies which of the reference chart's color blocks most closely matches the color of the corresponding dipstick's test pads. The generated test results may then be provided to the user in a printed or displayed form. Alternatively, the test results may simply be stored for later retrieval.

Color-based reaction testing of biological materials may be performed by capturing, in an uncalibrated environment, a digital image of an exposed test strip, together with an adjacently-located reference color chart or on-strip color chart. The image data specifically representing the individual test pads on the test strip, as well as the reference color blocks on the reference chart, are then located within the captured image, and compared to identify any color matches between the test pads and the corresponding sequences of reference color block. Based on this comparison operation, a set of test results can be generated which effectively identifies which of the reference chart's color blocks most closely matches the color of the corresponding dipstick's test pads. The generated test results may then be provided to the user in a printed or displayed form. Alternatively, the test results may simply be stored for later retrieval.

An indicating lubricant additive comprising a color-changable polymer having an outer layer of a first color, and an intermediate layer of a second color; and a lubricant sensing dipstick comprising a circuit housing, an elongated body having a proximal end and a distal end, and lubricant sensing means disposed at said distal end, wherein in one embodiment, the sensing means detects a change in the indicating lubricant additive that is. present in a lubricant.

The invention provides a rapid, sensitive and specific nucleic acid detection system which utilizes isothermal nucleic acid amplification in combination with a lateral flow chromatographic device, or DNA dipstick, for DNA-hybridization detection. The system of the invention requires no complex instrumentation or electronic hardware, and provides a low cost nucleic acid detection system suitable for highly sensitive pathogen detection. Hybridization to single-stranded DNA amplification products using the system of the invention provides a sensitive and specific means by which assays can be multiplexed for the detection of multiple target sequences.

The invention relates to a special caliper for an armature keyway capable of measuring physical dimensions of the armature keyway, which comprises a main scale, an auxiliary scale, a display, depth measurement accessories, a dipstick, a scale frame and other parts, wherein the main scale consists of a main scale upper measuring jaw, a main scale lower measuring jaw and a main scale body; the main scale lower measuring jaw is short and takes the shape of a cuboid; the auxiliary scale consists of an auxiliary scale body, an auxiliary scale lower measuring jaw and an auxiliary upper measuring jaw; the auxiliary scale lower measuring jaw is long; the auxiliary scale, the scale frame and the depth measurement accessories are arranged on the main scale body and can all perform relative motion; the display and the dipstick are arranged on the auxiliary scale and move along with the auxiliary scale; a measuring surface and the bottom surface of the main scale lower measuring jaw contact the side face and the bottom surface of the keyway respectively; the auxiliary scale lower measuring jaw contacts an excircle of a shaft and measures the symmetry degree error of the keyway; a measuring surface of the main scale upper measuring jaw and a measuring surface of the auxiliary scale upper measuring jaw contact two side faces of the keyway respectively and measure the width of the keyway; the depth measurement accessories are placed on the shaft; and the dipstick contacts the bottom surface of the keyway and measures the depth of the keyway.

The prevent invention relates to an integrated package-holder assay devices for detecting the presence of analyte in a sample. The device serves the dual roles of supporting and protecting an immunochromatographic assay. The device is compatible with any immunochromatographic assay format. The assay can be performed in a single apparatus for use in a laboratory or a field setting. In a specific example, the assay device is a nylon membrane formatted for an immunochromatographic assay for cotinine sealed between transparent adhesive tape and a stiff plastic strip. White tape placed over the plastic strip defined a window for observing the assay results.

The invention discloses primers for loop-mediated isothermal amplification-lateral flow dipstick (LAMP-LFD) detection of a vibrio vulnificus and probe sequences. The primers are characterized by including three pairs of LAMP primers, namely TolC-F3, TolC-B3, TolC-FIP, TolC-BIP, TolC-LF and TolC-LB, and a probe TolC--HP, wherein the Van-FIP is a biotin labeling primer at 5' terminal; the probe TolC-HP is a fluorescein isothiocyanate FITC labeled probe at the 5' terminal; concrete sequences are shown in SEQ NO1-NO7 in a sequence table. The primer has the advantages of good quickness, specificity and sensitivity and simple demands on instruments; early diagnosis and detection of the vibrio vulnificus are facilitated; the demands of a basic-level detection mechanism and field epidemic focus detection can be met.

A fluid level measuring device, also referred to as a dipstick, for measuring the fluid level in a fluid reservoir or tank, such as an oil pan or transmission reservoir in an internal combustion engine. The fluid level measuring device includes a stationary tube assembly in which a dipstick assembly is disposed. The dipstick assembly includes a fluid level indicator measuring blade attached to an elongated shaft which is directly molded into a plastic handle assembly. The plastic handle assembly includes a bayonet type locking mechanism for locking the handle to the stationary tube assembly. A compressible seal forms a pressurized seal between the stationary tube assembly and the handle.

Compositions and methods using antibodies which are immunoreactive with specific apolipoproteins to determine the concentrations of lipoproteins such as HDL and LDL, and / or apolipoproteins in human blood, serum or plasma sample, are described. Monoclonal antibodies (MAbs) are described that specifically bind to epitopes present in apolipoproteins and lipoproteins, enabling rapid and reliable determinations of levels of specific blood lipoprotein and / or apolipoprotein levels, including Apo B-100, Apo A-I, Apo A-II, Apo C-III, and Apo E, and thereby determination of relative ratios of HDL and LDL and LpaI and LpaII. In a preferred embodiment, the compositions are strips of a solid phase material coated with one or more of the antibodies and are referred to herein as “dipsticks”. The dipsticks specifically bind a lipoprotein or apolipoprotein when dipped into a protein sample. The amount of lipid associated with a bound lipoprotein or the amount of apolipoprotein bound on the dipstick is quantitated using an appropriate method, for example, by staining with a lipid stain or reaction with a second labelled antibody. The intensity of the stain on the dipstick is proportional to the concentration of the lipoprotein lipid or apolipoprotein circulating in the blood and can be quantitated by comparison with standards containing known amounts of lipid.

A dipstick that measures and externally indicates the temperature and level of a fluid within a fluid reservoir. For example, in one embodiment the dipstick measures and externally indicates the oil temperature and oil level of oil within an oil reservoir of a motorcycle or other vehicle. The fluid temperature and level are indicated on an externally viewable portion of the dipstick, such as an exposed end or cap. The viewable portion indicates the fluid level when the fluid temperature is within guidelines recommended by the manufacturer or when the fluid temperature reaches a minimum threshold temperature.

The invention provides a quick test dipstick used for testing a specific antigen of Brucella, which comprises a reaction membrane and a binder release liner. The reaction membrane is provided with a testing strap coated with a bp26 monoclonal antibody or bp26 polyclonal antibody and a quality control strap coated with anti-IgG; the binder release liner is coated with the bp26 monoclonal antibody which is marked by colloidal gold to be different from an antigen binding site on the reaction membrane. A membrane chromatography double antibody sandwich method is applied for detecting the specific antigen of the Brucella in a specimen. As the dipstick is adopted for test, the operation is simple, convenient, quick and concise, requiring no special equipment and facilities as well as professional training. Furthermore, the dipstick has clear and easy-identity results, simple operation and easy popularization, is applicable to matrixes, field tests of emergency on a large scale and the study of epidemiology and can aid in the infection diagnostics of the Brucella.

A flexible locking dipstick module useful with a motor vehicle transmission including a transmission case. A transmission dipstick is disposed within a housing which has one end thereof affixed to the transmission case and extends therefrom to a location within the engine compartment of a motor vehicle. Each end of the module includes a quick disconnect locking coupling providing for ready installation of the dipstick housing and its associated dipstick. Each coupling further provides protection against blow out of the dipstick in the event of inordinate build up of pressure within the transmission. Further, one portion of the outboard coupling may be employed as a liquid-tight closure for a dipstick entry opening in the transmission case during removal and / or storage of the transmission case.

The invention discloses a dipstick used for testing sulfonamides and fluoroquinolones and test method thereof. The dipstick consists of a dipstick body and a microporous reagent, the said microporous reagent contains a freeze-dried sulfonamides monoclonal antibody-colloidal gold marker and a freeze-dried fluoroquinolones monoclonal antibody-colloidal gold marker; the said dipstick body consists of a sample absorption pad, a reaction film, an absorbent pad, a protective film and a bottom patch which are connected in sequence, the said reaction film includes two detection lines and a quality control line, the said two detection lines are respectively coated with sulfonamides hapten carrier protein conjugates and fluoroquinolones hapten carrier protein conjugates, the said quality control line is coated with goat-anti-mouse antibody. Using the dipstick introduced in this invention to test sulfonamides and fluoroquinolones is convenient, fast, intuitive, and accurate. The dipstick is convenient to carry, is wide in application range and low in cost and is easy to promote and use.

Described are sample carriers and methods of extracting a fluid sample from a dried sample on a sample carrier. The sample carrier has a first carrier portion that receives a fluid sample, and includes a material that adsorbs the fluid sample and dissolves upon application of a solvent. A second carrier portion is attached to the first carrier portion and includes a material that is indissolvable in the solvent. The first carrier portion having a dried sample is dissolved into a solution upon application of the solvent. The solution can be analyzed to determine constituents in the extracted sample. The sample carrier can conveniently be in the form of a card or a dipstick. In alternative embodiments, a carrier portion that includes the dried sample is indissolvable in the solvent but is released from another carrier portion through application of a solvent to an intervening dissolvable carrier portion.

A method and system for automated visual analysis of a dipstick using standard user equipment (UE) are disclosed herein. The method may include the following steps: capturing, using an arbitrary UE having specified image capturing and processing capabilities, an image of a dipstick having colored test reagents, and a calibration array having a plurality of colored calibration elements which are tailored specifically to the test reagents; deriving, based on the captured image, illumination parameters associated with the dipstick and the calibration array; determining whether the illumination parameters are within predefined illumination boundary conditions sufficient for interpreting the test reagents, given the specified image capturing and processing capabilities of the UE; applying image enhancement operations to the captured image, based on predefined mapping between the derived illumination parameters and the required adjustments; and interpreting the colored test reagents, based on the colored calibration elements, in the enhanced captured image.

A fluid level measuring device, also referred to as a dipstick, for measuring the fluid level in a fluid reservoir or tank, such as an oil pan or transmission reservoir in an internal combustion engine. The fluid level measuring device includes a stationary tube onto which lugs can be directly attached. The dipstick assembly includes a fluid level indicator measuring blade attached to an elongated shaft that is molded into a plastic handle assembly. The plastic handle assembly includes a bayonet type locking mechanism for locking the handle to the stationary tube assembly. A compressible seal forms a pressurized seal between the stationary tube assembly and the handle.

A transmission housing, or transmission including a transmission housing, having a plurality of oil pan access ports positioned on the housing for receiving in each access port, or one of the access ports, a transmission fluid indicator that is used to monitor a level of transmission fluid in an oil pan mounted to a bottom of the transmission housing. The transmission fluid indicator may be a manual indicator, such as a dipstick, or an automated indicator, such as a sensor that is configured to generate one or more electrical signals indicative of a level of the transmission fluid in the oil pan.

A method and system for automated visual analysis of a dipstick using standard user equipment (UE) are disclosed herein. The method may include the following steps: capturing, using an arbitrary UE having specified image capturing and processing capabilities, an image of a dipstick having colored test reagents, and a calibration array having a plurality of colored calibration elements which are tailored specifically to the test reagents; deriving, based on the captured image, illumination parameters associated with the dipstick and the calibration array; determining whether the illumination parameters are within predefined illumination boundary conditions sufficient for interpreting the test reagents, given the specified image capturing and processing capabilities of the UE; applying image enhancement operations to the captured image, based on predefined mapping between the derived illumination parameters and the required adjustments; and interpreting the colored test reagents, based on the colored calibration elements, in the enhanced captured image.

The invention discloses an immunofluorescence dipstick component for quickly and quantitatively detecting protein of a plurality of types and a detection card component prepared from the same and a preparation method thereof, wherein the protein of a plurality of types comprises muscle hemoglobin / creatine kinase isoenzyme / troponin I; the dipstick component comprises a dipstick consisting of a bottom liner, a water-absorbing pad, a coated analysis membrane and a sample pad and independently packaged fluorescein mark specific antibodies; three detection lines and a quality control line are arranged on the coated analysis membrane; the detection line on the coated analysis membrane is respectively coated with an anti-myoglobin monoclonal antibody line, an anti-creatine kinase isozyme monoclonal antibody line and a troponin I monoclonal antibody line; the quality control line is coated with a rabbit IgG antibody; the fluorescein mark specific antibodies comprise the anti-myoglobin monoclonal antibody line, the anti-creatine kinase isozyme monoclonal antibody line, an troponin I monoclonal antibody and an anti-rabbit IgG antibody; and the detection card component comprises the dipstick, a card box consisting of a cover plate and a back plate and independently packaged platinum porphyrin mark specific antibodies and can synchronously detect the muscle hemoglobin / creatine kinase isoenzyme / troponin I, is simple to operate, is quick and sensitive, and has good specificity.

A fluid level measuring device, also referred to as a dipstick, for measuring the fluid level in a fluid reservoir or tank, such as an oil pan or transmission reservoir in an internal combustion engine. The fluid level measuring device includes a stationary tube onto which lugs can be directly attached. The dipstick assembly includes a fluid level indicator measuring blade attached to an elongated shaft that is molded into a plastic handle assembly. The plastic handle assembly includes a bayonet type locking mechanism for locking the handle to the stationary tube assembly. A compressible seal forms a pressurized seal between the stationary tube assembly and the handle.

A fluid level indicator for determining the level of fluid in a container includes a dipstick that is entered into the fluid in the container and withdrawn from the fluid, a billet of thermochromic material having a reference temperature, a billet length extending along a portion of the dipstick, and a fluid level range marking on the dipstick along the length of the billet.

Instant Reading Oil Dipstick Improvements is a near universal design with most assembly done by the manufacturer. The customers can easily adapt such to match their existing dipstick geometry by pushing the adjustable parts to the correct location, where they will remain. The air valve is within a single, machined brass cone that adapts to the metal tube and seals in the engine vacuum. A new tubular plastic air seal around the wire handle increases reliability. And a cone shaped rubber squeegee will automatically remove oil from the outside of the tubing as the dipstick is withdrawn from the crankcase.

In an axial-flow preparative chromatography column that contains a piston, commonly termed an adaptor, that is lowered over the top of the resin, the ability to lower the piston in a controlled manner to minimize the chances of damage to the resin is achieved by use of an aperture either in the piston head itself or in a compound bolt that secures the upper column frit to the piston head. The aperture is closed with a removable plug during storage and use of the piston head and column. During packing of the bed, however, the plug is replaced by a graduated rod operating as a dipstick to allow the operator to determine the distance between the bottom face of the piston head and the upper surface of the column packing.

A fluid level measuring device, also referred to as a dipstick, for measuring the fluid level in a fluid reservoir or tank, such as an oil pan or transmission reservoir in an internal combustion engine. The fluid level measuring device includes a stationary tube assembly in which a rotatable dipstick assembly is disposed. The dipstick assembly includes a fluid level indicator measuring blade attached to an elongated shaft that is molded into a plastic handle assembly. The plastic handle assembly includes a bayonet type locking mechanism for locking the handle to the stationary tube assembly. A compressible seal forms a pressurized seal between the stationary tube assembly and the handle.

A connection system for a fluid level measuring system is disclosed. The disclosed connection system comprises an outer member (also known as a boss), at least one retaining means or clip, and a tube that has been previously shaped and in receptive within the outer member. The end of the tube not received within the outer member is associated with a cap or handle for inserting and removing a fluid level indicator blade (or dipstick).