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4109159 |
Method and an automatic device for analyzing variations in the transparency of a sample
The method consists in generating an electrical signal B which is representative of the time-dependent variations in transparency, in generating a pulse at the initial instant of measurement, in...
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4104031 |
Apparatus for displaying the results obtained on an agglutination support
Apparatus for projecting, in conventional indication form, i.e. A, B, AB or O followed by the sign + or -, the results which enable an individual's blood group and rhesus factor to be determined...
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4101276 |
Method and apparatus for signalling the introduction of chemical reaction components into a chemical analyzing system
A system for chemically analyzing antigens or antibodies by initiating an antigen-antibody reaction in a reaction zone and measuring the light scattered by a precipitate produced by the reaction to...
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4100416 |
Serum fluorescence suppression
A system for suppressing normal serum fluorescence in fluorescence immunoassay, in which in one embodiment, the immunoassay fluorescently tagged reaction product in a single sample is irradiated at...
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4097845 |
Method of and an apparatus for automatic classification of red blood cells
A method and apparatus for automatically classifying abnormal and normal red blood cells is disclosed. The abnormal cells may be differentiated into mutually exclusive subpopulations. The...
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4095117 |
Circuit for defining the dye dilution curves in vivo and in vitro for calculating the cardiac blood flowrate value per minute
The invention concerns a circuit for the determination of the concentration of any component of a liquid containing three different components having different optical properties, for the...
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4090128 |
Aperture module for use in particle testing apparatus
An aperture module for obtaining signals from microscopic particles suspended in a sample blood solution which passes through a scanning aperture. A module housing including an aperture holder is...
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4086058 |
Analytical system, reagent dispensing and sampling apparatus and method
An improved system and method of analytical testing for medical purposes including reagent and sample measuring and dispensing by means and steps of forming matrixes of tubes or containers for...
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4084902 |
Method and apparatus for producing a suspension of biological cells on a substrate
A method and apparatus for producing a suspension of biological cells of a predetermined density (or cell spacing) on a substrate. Illumination incident upon the cell suspension is modified by the...
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4082457 |
Leukocyte detector
A leukocyte detector comprises a first and a second filter means adapted to select color components with different wave lengths, or green and blue color components, respectively, from the...
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4079393 |
Blood typing installations
A blood typing installation comprises a transparent cradle for a glass agglutination plate and a flash behind the cradle to project an image of the plate via an optical system onto a screen at the...
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4076419 |
Method and apparatus for hematology
A predetermined number of small latex beads is provided in the vacuum capsule of a Vacutainer. After blood is drawn into the capsule, the capsule is agitated to mix the blood and beads into a...
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4074971 |
Apparatus and method for the pharmacological manipulation of the coagulation mechanism in blood and for signalling the event of blood coagulation
An apparatus and method for accelerating the coagulation of blood and the components thereof uses the injection of an additive and gas to trigger coagulation. The appartus is designed to include a...
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4072421 |
Method and apparatus for optical discrimination of particles
Method and apparatus for improved optical discrimination in a total particle population of particles having a significant light absorption characteristic and particles having a significant light...
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4072627 |
Uric acid determination
An aqueous solution useful in connection with a redox type spectrophotometric or colorimetric determination of uric acid in a biologic fluid is disclosed. The solution contains either a multivalent...
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4071891 |
Electronic calculator - register for hematology differentials
An electronic tabulator for computing and displaying running totals of six different cells as well as a running total of the combined cell count. Means are also provided for dividing the individual...
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4070113 |
Coherent optics blood cell classification system
A system for classifying the various major types of blood cells is provided wherein blood cells are passed before a laser beam. The redirected light energy passing through the cell is applied to a...
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4066360 |
Device for measuring and recording spontaneous blood platelet aggregation in platelet-rich citrated plasma
A device for measuring and recording spontaneous blood platelet aggregation in platelet-rich citrated blood plasma comprising a photometer having a source of light, a photo cell, a light filter and...
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4066359 |
Method and structure for treating body fluids with cells therein
A method and structure capable of treating body fluids with cells therein for facilitating examination of cells. The body fluid sample is placed in a cylinder at one end of which is a filter, and...
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4061914 |
Method and apparatus for dual resolution analysis of a scene
A method and apparatus for analyzing a scene at a low resolution until an object of interest is detected. Thereafter, the object of interest is analyzed at a higher resolution while continuing to...
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4061469 |
Calibration in a blood analyzer
In a blood analyzer, improved calibration is provided. First and second photodetectors sense energy supplied directly from a source and from the source through a sample respectively. A log ratio...
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4048616 |
Pattern recognition system with keyboard entry for adaptive sensitivity
A blood cell recognition system is provided which includes scanning means for generating signals representative of a pattern in a whole blood smear scanned by the scanning means. Means for...
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4045772 |
Automatic focusing system
A white blood cell classification system is provided for detecting and classifying white blood cells in a peripheral blood smear. The system includes optical scanning means for scanning the blood...
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4041932 |
Method for monitoring blood gas tension and pH from outside the body
The concentration (and thus the partial pressure) of certain gases, such as carbon dioxide and oxygen and the pH (hydrogen ion concentration) in arterial blood are determined without the need for...
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4041502 |
Sedimentation recorder
A sedimentation recorder including an optical tracking head controlled to track the liquid-solid separation boundary in a tube containing a sample of liquid-solid mixture. The tracking head is...
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4040742 |
Capillary flow method and apparatus for determination of cell osmotic fragility
A method and apparatus for the determination of blood cell osmotic fragility, wherein a solution of salt, such as sodium chloride, with an osmotic gradient decreasing with time is passed through a...
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4035156 |
Filter type rotor for multistation photometer
A filter type rotor for a multistation photometer is provided. The rotor design combines the principle of cross-flow filtration with centrifugal sedimentation so that these occur simultaneously as...
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4033330 |
Transcutaneous pH measuring instrument
A transcutaneous pH measuring device is provided in which a known volume of fluid is brought into equilibrium with body fluids through a membrane on a portion of skin whose surface layers have been...
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4030888 |
Automatic blood analyzer
A fully automatic system is disclosed for determining the seven blood parameters, red blood counts (RBC), hematocrit (HCT), white blood counts (WBC), mean corpuscular hemoglobin (MCH), mean...
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4027971 |
Method of simultaneously counting blood cells
An analytical apparatus includes means for simultaneously counting the quantity of blood cells, either erythrocytes or leucocytes, suspended in a predetermined quantity of fluid comprising a blood...
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4021117 |
Process for automatic counting and measurement of particles
A method of counting and analyzing pulses representative of characteristics of particles passing through a detector device including detecting the amplitude of each pulse, measuring the area under...
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4017192 |
Optical analysis of biomedical specimens
A technique for automatic detection of abnormalities, particularly pathology, in biomedical specimens. Light transmittance or reflectance data over a large number of wavelengths for numerous...
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4014321 |
Non-invasive glucose sensor system
A unique glucose sensor to determine the glucose level in patients, for example, for use in treating or diagnosing diabetes. The patient's eye is automatically scanned using a dual source of...
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4014649 |
Method and apparatus for delivering blood oxygen association curve information
Method of measuring the oxygen association state of blood samples, which includes the steps of disposing a blood sample within a blood-receiving receptacle, providing a controlled atmosphere...
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4013067 |
Warning apparatus for indicating a threat of impending shock
A warning apparatus for indicating the threat of impending shock, which includes a photoelectric pulse pickup or receiver adapted to be applied onto the skin of a patient. The pulse pickup or...
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4012634 |
Automatic focusing system including quantizing means
An automatic focusing system is provided for a microscopic instrument having a lens assembly and a platform for supporting an object. The system includes a flying spot scanner, the light from which...
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4009435 |
Apparatus for preservation and identification of particles analyzed by flow-through apparatus
An apparatus for identifying particles such as cells in a liquid suspension includes a particle scanning device containing a suspension of the particles. The suspension moves in a stream through a...
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RE29141 |
Apparatus for orienting generally flat particles for sensing
A flow chamber which is particularly useful in slit-scan photometry and which has a predetermined configuration for orienting generally flat oval particles such as squamous cells in the direction...
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4000972 |
Measuring system for the pharmacological manipulation of the coagulation mechanism in blood and for the elapsed coagulation time
A system for determining the coagulation time of blood and components thereof, the amount of anticoagulant to be injected before and during surgery, and the amount of additive required to...
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4000417 |
Scanning microscope system with automatic cell find and autofocus
A scanning automated microscope system is designed as a clinical laboratory instrument which will aid and speed the task of the medical technologist in performing leukocyte differential count and...
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3999047 |
Method and apparatus utilizing color algebra for analyzing scene regions
A method and apparatus for analyzing an illuminated subject. In the preferred embodiment, the subject is a stained blood smear. A first signal is produced which represents a first predetermined...
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3998550 |
Photoelectric oximeter
An optical non-invasive oximeter for measuring oxygen saturation in arterial blood utilizes a light source capable of giving off light having different wavelengths, such as light in the infrared...
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3994593 |
Apparatus for automatic quantitative analysis of blood serum specimens by cataphoretic process
An apparatus for automatic quantitative analysis of specimens of a blood serum by a cataphoretic process comprises a supply of a clearing liquid which is supplied to a film on which a plurality of...
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3994591 |
Method and apparatus for selecting between differently colored features
A method and apparatus for analyzing features in a field which is scanned to produce video signals according to the spectral characteristics of the features. The apparatus incorporates two or more...
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3992112 |
Attenuating image extender for multiple imaging system
Disclosed is an optical system for dividing a single optical image into two or more geometrically identical images which are contiguous and coplanar in space and which have the same magnification....
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3990849 |
Separation of cells from liquid components of blood
A method for separating a blood cell portion and a liquid portion of a whole blood sample comprising the steps of contacting over a period of time a substance in the form of a nonparticulate gel...
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3989381 |
Optical chamber with spherical reflective portion and apparatus employing same
An optical chamber for use in an apparatus for measuring characteristics of small particles such as blood cells while the particles are suspended in a liquid includes a housing which defines the...
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3984307 |
Combined particle sorter and segregation indicator
Small particles to be sorted are entrained in a stream of fluid and particle differences are detected to control a sorter located downstream. The sorter is effective to switch the particle carrying...
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3977995 |
Calibrating fluid for blood cell counting and hemoglobin determination
A calibrating fluid for automated instruments for blood cell counting and hemoglobin determination comprising a sterile solution of oxyhemoglobin or other derivative products of hemoglobin and...
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3976862 |
Flow stream processor
A flow stream processor particularly adapted for use in blood cell processing, and having discriminator circuits for selecting a particular group of cells from a large population, thereby...
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