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5568815 |
Self-powered interface circuit for use with a transducer sensor
An interface circuit for interfacing a semiconductor transducer sensor to a patient vital signs monitor is disclosed. In one embodiment, the interface circuit includes a power supply circuit that...
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5568814 |
Ambulatory patient monitoring system
An ambulatory patient monitoring system (100) is provided for measuring and storing predetermined diagnostic parameters of a patient. The monitoring system includes a personal type computer (120)...
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5566676 |
Pressure data acquisition device for a patient monitoring system
A data acquisition device is disclosed for use in a patient monitoring system which includes a display device. The system also includes a pressure transducer which produces patient blood pressure...
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5551440 |
Electronic blood pressure meter
An electronic blood pressure meter which determines a systolic blood pressure value and a diastolic blood pressure value by detecting a sharpest positive peak and a sharpest negative peak of a...
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5551435 |
Method and system for managing hemodynamic state and oxygen transport
A method of attaining a preselected systemic hemodynamic state in an patient using a per-beat basis, such as for example paired values of MAP and SI, rather than a per-minute basis, such as MAP and...
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5551438 |
Method and apparatus for determining blood pressure
A transducer assembly (12) is applied to the surface of the body beneath an inflatable cuff (10). Transducers (12c) are disposed upon a substrate (12a) and may include from one to some large number...
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5551437 |
Sensor for measuring blood pressure
A sensor with a first, second and third force pick-up includes a piece of foil made of piezoelectric material which serves all three pick-ups and carries a number of electrodes. The second and...
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5535753 |
Apparatus and methods for the noninvasive measurement of cardiovascular system parameters
Apparatus and methods for noninvasively measuring cardiovascular system parameters. According to a first preferred embodiment, the apparatus generates a time varying electrical voltage waveform...
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5533511 |
Apparatus and method for noninvasive blood pressure measurement
A blood pressure monitor for determining a patient's blood pressure comprises a processor attached to a first input device for receiving an initial input representing the patient's absolute blood...
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5522387 |
Method to assess anesthesia
A patient's general state of anesthesia is displayed as a Cartesian plot of two vital signs: heart rate and blood pressure, in a window on a monitor. The heart rate is plotted on the x-axis while...
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5503156 |
Noninvasive pulse transducer for simultaneously measuring pulse pressure and velocity
A pulse transducer is disclosed having a pressure sensor for detecting pulse pressure and a velocity sensor for simultaneously detecting pulse velocity in blood vessels. The present invention...
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5497779 |
Pulse wave detecting apparatus
A pulse wave detecting apparatus including a pulse wave sensor having a press surface and including at least one array of pressure sensing elements provided in the press surface; a pressing device...
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5498428 |
Treatment of hypertension by oral administration of potassium bicarbonate
Novel methods are provided for treating hypertension in humans which comprise administering therapeutic amounts of pharmaceutically-acceptable non-halide salts of potassium. Preferred salts are...
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5497778 |
Apparatus and method for noninvasive measurement of peripheral pressure pulse compliance and systolic time intervals
Systolic time intervals provide a basis for the determination of total electromechanical systole and offer a physiologic approach to cardiovascular assessment. In addition, examination of the pulse...
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5485848 |
Portable blood pressure measuring device and method of measuring blood pressure
A non-invasive, non-intrusive, convenient and portable device for monitoring a user's arterial blood pressure is provided. The continuous blood pressure monitoring device includes a transducer...
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5482049 |
Programmable electronic blood pressure monitoring labels
An electronic labeling and display system for displaying a user defined label created once by the user at a display monitor location and displayed at the remote sensing location and a display monitor.
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5476484 |
Apparatus for sensing a physical condition in a living subject
An apparatus for determining a physical condition in a living subject by determining peripheral resistance to flow is wherein peripheral resistance to flow is determined by measuring changes in the...
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5467771 |
Pulse wave sensor
A pressure pulse wave sensor for detecting a pressure pulse wave produced from an arterial vessel of a living subject in synchronism with heartbeat of the subject, the sensor having a press surface...
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5464018 |
Evaluation of salt sensitivity in hypertension
A method of evaluating salt sensitivity in a hypertensive patient comprises evaluating customary salt intake and deleting from the diet any substance other than salt that might influence blood...
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5464017 |
LED display blood pressure meter
An LED display blood pressure meter comprising a transmitter, a receiver, a sensor, an amplifying circuit, a transferring circuit, a microprocessor and three display circuits. When measuring human...
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5462051 |
Medical communication system
A medical communication system including (A) a sensor worn on a living body to obtain physical information of the body, and generating a signal representing the physical information; (B) a first...
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5456263 |
Detector for detecting heart depolarizations
A compact, power-sparing detector for detecting heart polarizations is described. The detector has a first operational amplifier which uses sensed heart signals from a heart as an input signal. By...
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5454831 |
Occlusive cuff system
An overlapping occlusive cuff for improved application of pressure to the limb, comprising: an inflatable bladder; a sheath for containing the inflatable bladder wherein the sheath has a length...
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5450850 |
System for examining cardiac function
The minimum amount of data regarding cardiac function required for evaluation is measured non-invasively and various cardiac function parameters are computed (estimated) based on the measured...
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5445159 |
Minimally invasive method to determine the left ventricular pressure waveform
A method for determining a patient's left ventricular pressure waveform without placement of a catheter inside the left ventricle, including converting the patient's ejection phase waveform of the...
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5439001 |
Flexible diaphragm tonometer
A pressure waveform monitor for non-invasively monitoring the pressure waveform inside a vessel, such as an artery, includes a flexible diaphragm extended across an opening of a container...
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5439002 |
Blood pressure monitor system
A blood pressure monitor system including a pressure sensor having a press surface and including pressure sensing elements provided in the press surface; a pressing device which presses the...
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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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5406952 |
Blood pressure monitoring system
A blood pressure instrument and method in which analog blood pressure waveform signals are digitized and stored and used to determine blood pressure parameters to make physiological measurements...
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5400793 |
Method of determining the stroke volume and the cardiac output of the human heart
Method of determining the stroke volume of the human heart from the pulse-type blood-stream pressure signal derived from the aorta and consisting in each case of a systolic and a diastolic period....
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5398692 |
Combination esophageal catheter for the measurement of atrial pressure
Non-invasive apparatus and method for obtaining a quantitative determination of mean left atrial pressure or otherwise obtaining a quantitative determination of a left atrial pressure value. A...
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5396895 |
Apparatus for simulating blood circulation
An apparatus simulating blood circulation in the human body which allows sphygmic diagnosis simulation to be performed by measuring simulated arterial pulses along a simulated artery portion which...
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5368040 |
Apparatus and method for determining a plurality of hemodynamic variables from a single, chroniclaly implanted absolute pressure sensor
A method and apparatus for monitoring and measuring the hemodynamic status of a patient's pulmonary pressure and right atrial pressure. The aforementioned is achieved by using an implanted absolute...
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5365930 |
Apparatus for measuring and evaluating blood circulation
An apparatus for observing and evaluating blood circulation utilizing pressure sensors disposed along an artery. Three pressure sensors may be used to detect pulses at the shun, khan, and shaku...
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5363855 |
Pressure waveform monitor
A pressure waveform monitor noninvasively monitors the pressure waveform in an underlying vessel such as an artery. The apparatus comprises at least one continuous, relatively thin and narrow...
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5343868 |
Method and apparatus for detecting artifacts in a blood pressure measuring system
A method for detecting artifacts in a blood pressure measuring system, in particular artifacts caused by sampling or flushing in an invasive blood pressure measuring system, disables the related...
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5335551 |
Pillow type pressure detector
A pillow type pressure detector having a base board on the front surface of which a load cell type load sensor is mounted; a holder cover which is so provided as to be spaced a predetermined...
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5309916 |
Blood pressure measuring device and method
A device for measuring blood pressure includes a sensor arrangement which is releasably attached to the exterior of a body and which is electrically conductively connected with electronic circuit....
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5301675 |
Apparatus for measuring blood flow velocity and blood flow volume in aortas
A cuff (200) is put around an upper arm and a blood flow shutting bag (220) thereof shuts the blood flow at the upper arm. A forward detection bag (210) is disposed upstream and a rear detection...
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5301676 |
Identification method for a cuff type in a non-invasive sphygmomanometer
The invention relates to an automatic identification method for the cuff of a sphygmomanometer. When changing the pressure in a cuff (6 or 19) or in a space in flow communication therewith, the...
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5291895 |
Evaluation of heart mechanical performance
The invention evaluates the mechanical condition of a heart in a patient by noninvasively providing a pulse signal representative of arterial pulsation by placing a transducer sufficiently close to...
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5289823 |
Non-invasive aortic blood flow sensor and method for non-invasively measuring aortic blood flow
A non-invasive aortic blood flow sensor is disclosed. The sensor determines the blood flow in the aorta of a patient based on the pressure difference between the right and left subclavian arteries....
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5284150 |
Tonometry system for determining blood pressure
A tissue contact stress sensing system incorporates a semiconductor assembly and a continuous diaphragm to noninvasively determine the intra-arterial blood pressure of a patient. The system...
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5280789 |
Apparatus and method for measuring fluid pressure in a medical patient
An apparatus for vertically aligning a given point on a pressure transducer unit with a desired point an a patient, the apparatus comprising: (a) a light source; (b) a housing adapted to contain...
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5273046 |
Method of determining optimum artery applanation
A method, for use in a non-invasive blood pressure monitoring system, of determining optimum artery applanation. The system uses a stress sensor including a stress sensitive element for detecting...
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5271405 |
Wrist mount apparatus for use in blood pressure tonometry
A wrist mount apparatus for placing a tissue stress sensor in operative engagement with the tissue overlaying an artery of interest is disclosed for use in a system for noninvasively determining...
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5269311 |
Method for compensating errors in a pressure transducer
Disclosed is a method of compensating any of a plurality of different pressure transducers for their characteristic pressure sensitivity, zero pressure offset, and self-heating error. The method...
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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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5265615 |
Method and apparatus for continuous measurement of cardiac output and SVR
A method of continuously monitoring cardiac output and SVR of a patient by analyzing the blood pressure signal. The signal can be measured directly by the use of catheters placed into various...
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5263484 |
Method of determining which portion of a stress sensor is best positioned for use in determining intra-arterial blood pressure
A method, for use in a non-invasive blood pressure monitoring system, of determining which portion of a stress sensitive element of a tissue stress sensor is best located for detecting the stress...
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