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7621877 |
Body surface probe, apparatus and method for non-invasively detecting medical conditions
A probe for application to a selected area of a subject's skin covering a body part, which selected area serves as a measurement site for measuring changes in the pulsatile arterial blood volume...
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7591787 |
Method for removing Doppler angle ambiguity
A method of measuring blood flow including several steps. In an initial step a first ultrasound beam is oriented in a direction substantially perpendicular to the direction of the blood flow to be...
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7572230 |
Method for the presentation of information concerning variations of the perfusion
The invention relates to a method for the presentation of information concerning variations of the arterial filling with blood (perfusion) of organs of living beings on the user surface ( 10 ) of a...
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7492814 |
Method of removing noise and interference from signal using peak picking
Removing noise and interference from a signal by calculating a joint time-frequency domain of the signal, estimating instantaneous frequencies of the joint time-frequency domain, modifying each...
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7485094 |
Methods of diagnosis using pulse volume measurement
The utility of pulse volume measurement is expanded to detection of many conditions which have previously not been detected or have been detected using more complicated techniques. Such conditions...
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7302292 |
Breast cancer screening
A method of screening for breast cancer, comprising: testing a plurality of asymptomatic women by measuring at least one electrical impedance characteristic on at least one breast, said...
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7275447 |
Method and apparatus to determine an initial flow rate in a conduit
A method and apparatus for determining an initial flow rate in a conduit is disclosed. A known change is made to the flow to be measured, resulting changes (or values corresponding to these...
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7121150 |
Method and apparatus to determine an initial flow rate in a conduit
A method and apparatus for determining an initial flow rate in a conduit is disclosed. A known change is made to the flow to be measured, resulting changes (or values corresponding to these...
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7011631 |
Noninvasive method of measuring blood density and hematocrit
Apparatus and methods for noninvasively measuring blood density and hematocrit in a human subject can include an appliance for applying pressure around a segment of a subject's limb or appendage...
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7001337 |
Monitoring physiological parameters based on variations in a photoplethysmographic signal
A method and apparatus are disclosed for using photoplethysmography to obtain physiological parameter information related to respiration rate, heart rate, heart rate variability, blood volume...
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6997879 |
Methods and devices for reduction of motion-induced noise in optical vascular plethysmography
Methods and devices are provided for reducing motion artifacts when monitoring volume changes in blood vessels. Light having a first wavelength and light having a second wavelength are transmitted...
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6974418 |
Automatic calibration of blood volume status indicators
In a method for calibrating an indicator of the status of blood volume in a patient breathing with the aid of a mechanical ventilator, blood pressure data is obtained from the patient and used to...
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6909985 |
Method and apparatus for recording changes associated with acceleration of a structure
The present invention is directed to recording changes associated with the acceleration of a structure. An exemplary embodiment includes an accelerometer array having at least one silicon beam type...
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6749567 |
Noninvasive method of measuring physiologic parameters
The present invention provides means and methods for noninvasively identifying the blood pressure characteristics in each of the seven types of vessels in the circulatory system, including the...
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6695788 |
Methods for measurement of hemodynamics
A method for measuring hemodynamics of an experimental animal enabling repeated measurements, the method comprising the following steps: (i) ligating at least two parts of an artery, between which...
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6605046 |
Ambulatory physio-kinetic monitor with envelope enclosure
A water and moisture sealed, self contained, compact, long term, ambulatory physio-kinetic monitor is designed for mounting directly to the skin of an athlete or fitness performer, preferably...
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6592518 |
Cardiac monitoring system and method with multiple implanted transponders
A plurality of radio frequency semi-passive transponders are attached to an animal's organ, such as the heart. Each semi-passive transponder may be attached to the surface of the organ or mounted...
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6454718 |
Intra aural integrated vital signs monitor
An intra aural probe for monitoring multiple physiological parameters simultaneously. The probe includes a pressure sensor, a temperature sensor and a light sensor. The probe is dimensioned to fit...
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6375620 |
Process and device for carrying out a venous plethysmography using compression
Method and apparatus for venous compression plethysmography with a strain-gauge or by direct circumferential length measurement, the calibration of the measurement equipment being done automotively.
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6331162 |
Pulse wave velocity measuring device
A pulse wave velocity measuring device generally comprises first and second photoplethysmographic transducers or probes electrically operably connected to a computer. The transducers are positioned...
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6322515 |
Method and apparatus for the non-invasive detection of medical conditions by monitoring peripheral arterial tone
A method and apparatus for non-invasively determining a physiological condition. The method can include steps of monitoring peripheral arterial tone using an external sensor, detecting a change in...
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6309359 |
Method and apparatus for noninvasive determination of peripheral arterial lumenal area
An occlusive cuff is placed around a limb (e.g. an arm) of a patient. A fluid, such as air, is pumped into the cuff, and the pressure in the cuff is measured. The pressure variation in the cuff...
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6152881 |
Calibrated measurement of blood vessels and endothelium after reactive hyperemia and method therefor
The calibrated method for characterizing blood flow in a limb of a patient during reactive hyperemia utilizes a blood pressure cuff. The method establishes a predetermined, near diastolic, pressure...
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6151523 |
Apparatus and procedure for measuring volumes and global and segmental corporal composition in human beings
Apparatus and procedure for measuring volumes and global and segmental corporal composition in human beings, by means of measuring the electrical impedance at various frequencies, determining in...
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6015393 |
Systems and methods for monitoring and evaluating penile tumescence
An apparatus for monitoring the tumescent state of the penis of a patient includes a plurality of sensing elements to be placed in proximity to the penis for sensing penile impedance values. A...
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5999841 |
Apparatus for measuring circulating blood volume
Using the principle of pulse oximetry, the relationship between the logarithm of dye density and the passage of time is obtained to determine a regression line for the linear portion of the...
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5803907 |
Peripheral vascular disease testing
The present invention provides an diagnostic apparatus and method for physiologically measuring the biological responses of a selected group of muscles during exercise. Biological responses...
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5718232 |
Calibration of segmental blood volume changes in arteries and veins for pulse volume recorder
The method of calibrating includes selecting discrete levels of cuff pressure and placing the artery under study at those discrete levels of induced pressure with a closed pneumatic cuff system,...
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5715826 |
Method and device for assessing the state of blood vessels
A method and device for use in assessing the state of blood vessels within the human or animal body is provided. A vessel segment is identified for investigation, and at least one blood pressure...
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5692520 |
Method and apparatus for measuring arterial and venous blood flow in body appendages
The present invention is directed to a non-invasive method and apparatus for measuring arterial and venous blood flow in body appendages. The present invention is also directed to a non-invasive...
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5630424 |
Calibration of segmental blood volume charges in arteries and veins for pulse volume recorder
The method of calibrating includes selecting discrete levels of cuff pressure and placing the artery or vein under study under discrete levels of induced pressure with a closed pneumatic system...
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5566677 |
Calibration of segmental blood changes in arteries and veins during detection of atherosclerosis
The method of calibrating includes selecting discrete levels of cuff pressure and placing the artery or vein under study under discrete levels of induced pressure with a closed pneumatic system...
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5553611 |
Endocardial measurement method
A collection of measurements are taken from a set of measurement electrodes to determine the position of a catheter in a heart chamber. The preferred measurement catheter includes a relatively...
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5505204 |
Ultrasonic blood volume flow rate meter
A volume flow meter for displaying two-dimensional volume flow through a vessel, comprising an ultrasound instrument with scan head, a location and orientation sensor mounted to the scan head, and...
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5497787 |
Limb monitoring method and associated apparatus
A medical method comprises the steps of attaching a sensing device to a limb of a patient, automatically operating the sensing device to monitor a circumference of the limb, automatically comparing...
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5423322 |
Total compliance method and apparatus for noninvasive arterial blood pressure measurement
A system and method for automatically and noninvasively monitoring the blood pressure of a subject. The volume changes of an artery, such as a digital artery or the temporal artery, are detected by...
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5379774 |
Measurement of arterial elasticity and the frequency characteristic of the compliance of an artery
An apparatus for measuring arterial elasticity includes a cuff member having a light source and light detector, a variable pressure generating device, a fluid pressure sensor, a digital signal...
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5343867 |
Method and apparatus for detecting the onset and relative degree of atherosclerosis in humans
The present invention relates to a method for detecting the onset of atherosclerosis and for detecting the degree of atherosclerosis. Accordingly, one aspect of the present invention correlates...
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5327899 |
Polygraph automated scoring systems
A polygraph automated scoring system in which polygraph signals are input and a probability of deception is output. To begin the process, digitized polygraph signals are transformed into more...
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5297556 |
Method of detecting atherosclerosis while excluding motion artifacts
The present invention relates to a method for detecting the onset of atherosclerosis and for detecting the degree of atherosclerosis. Accordingly, one aspect of the present invention correlates...
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5269310 |
Method of measuring blood pressure with a plethysmograph
A method and apparatus for determining arterial blood pressures using a photoplethysmograph is provided. In the inventive method the photoplethysmograph output is calibrated to the patient using an...
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5152297 |
Method and apparatus for establishing the pressure-diameter relationship of an artery by non-invasive measures
This method for establishing the pressure-diameter relationship of an artery employs the measurement results from a non-invasive sensor (3) of the artery diameter, for instance of the humeral...
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5150292 |
Method and system for determination of instantaneous and average blood flow rates from digital angiograms
A method and system for quantitation of blood flow rates by using digital subtraction angiographic (DSA) images, wherein the spatial shift of the distribution of contrast material injected into an...
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5144951 |
Apparatus for measuring biopermeability
An apparatus for measuring biopermeability is disclosed. The apparatus includes a frame, a light source, a light-receiving element, a pre-amplifier, an off-set adjustment amplifier and a DC volt...
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5140990 |
Method of measuring blood pressure with a photoplethysmograph
A method and apparatus for determining arterial blood pressures using a photoplethysmograph is provided. In the inventive method the photoplethysmograph output is calibrated to the patient using an...
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RE33834 |
Heart-related parameters monitoring apparatus
A non-invasive method, and an apparatus, for determining heart-related parameters in patients. The method and apparatus determine pulse pressure, time constant of the arterial system, systolic and...
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5090417 |
Medical diagnostic apparatus
Medical diagnostic apparatus suitable for screening use in the detection of deep veinous thrombosis in association with hip joint replacement comprises a thigh cuff (12) inflatable and deflatable...
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5089961 |
Apparatus and method for vascular examination of a limb
An apparatus and a method are provided for vascular examination of a limb by inflation of a flexible-walled pneumatic chamber mounted to the limb and calibration of the pressure within the chamber...
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4962764 |
Hemostatic unit for measuring arterivenous bloodstreams
A hemostatic unit for the determination of arteriovenous bloodstreams comprises a flat cuff (15) having a length sufficient to be wound by about one and a half turns around the region to be...
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4928706 |
Nocturnal penile tumescence and rigidity monitor
The nocturnal penile tumescence and rigidity monitor includes a penile cuff formed on a nondistensible flexible membrane with an internal chamber defined therein. The chamber is initially filled...
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