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Class 600/331 - Calibrated


Subclass of Class 600 - Surgery
Definition: Subject matter wherein means are provided to determine whether
No. of patents: 83
Last issue date: 12/13/2011


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NumberTitleIssue Date
8078250Method for spectrophotometric blood oxygenation monitoring
A method and apparatus for non-invasively determining the blood oxygenation within a subject's tissue is provided that utilizes a near infrared spectrophotometric (NIRS) sensor capable of transmitting a light signal into the tissue of a subject and sensing the light...
12/13/2011
7424142Display and analysis of medical images using calibrated pixel values in units of known properties of reference materials
Methods to calibrate and display medical images with pixel values with known properties of one or more reference materials provide images which allow more accurate quantification of certain tissue properties. The images provide advantages in medical diagnosis by bei...
09/09/2008
7392075Method for enhancing pulse oximetry calculations in the presence of correlated artifacts
A method for determining a physiological parameter in the presence of correlated artifact, including obtaining two digital waveforms, x and y, the waveforms being representative of the absorption of two wavelengths of electromagnetic energy received from a blood-per...
06/24/2008
7383069Method of sample control and calibration adjustment for use with a noninvasive analyzer
A method and apparatus for easing the use of an optically based noninvasive analyzer is presented. More particularly, a simplified algorithm is used that removes the daily requirement of collecting and using a noninvasive spectrum to update a calibration model. In a...
06/03/2008
7343186Multi-wavelength physiological monitor
A physiological monitor for determining blood oxygen saturation of a medical patient includes a sensor, a signal processor and a display. The sensor includes at least three light emitting diodes. Each light emitting diode is adapted to emit light of a different wave...
03/11/2008
7317409Apparatus and method for interfacing time-variant signals
An improved apparatus and method for interfacing a time variant waveform between two hardware environments. In one aspect, the invention comprises a circuit for accurately simulating the output of one or more types of sensing device (e.g., passive bridge pressure tr...
01/08/2008
7316700Self optimizing lancing device with adaptation means to temporal variations in cutaneous properties
A lancing device, an embodiment of which controls the advancement and retraction of a lancet by monitoring the position of the lancet in conjunction with a lancet controller which incorporates a feedback loop for modulating the lancet driver to follow a predetermine...
01/08/2008
7313426Apparatus for determining concentrations of light absorbing substances in blood
In an apparatus for determining a concentration of a light absorbing substance in blood, a plurality of photo emitters are adapted to emit light beams having different wavelengths toward a living tissue including a blood vessel. A photo receiver is adapted to receiv...
12/25/2007
7309867Methods and apparatus for characterization of tissue samples
The invention provides methods for determining the probability that a given region of a tissue sample contains tissue of a given category, such as CIN 1 (cervical intraepithelial neoplasia, grade 1), CIN 2/3 (cervical intraepithelial neoplasia grades 2 and/or 3), no...
12/18/2007
7292721Calibration of tissue densities in computerized tomography
A hybrid calibration method uses a calibration phantom (exterior reference) scanned simultaneously with the patient, and one or more known tissues of the subject (interior reference) to create a hybrid calibration reference that improves the measurement of tissue de...
11/06/2007
7277743Patient monitoring system
A patient monitoring system is disclosed. The patient monitoring system includes at least one monitoring cable, a plurality of connecting wires, and a plurality of connectors. The plurality of connecting wires are housed within an outer covering and each extend from...
10/02/2007
7274955Parameter compensated pulse oximeter
A monitor has a primary input responsive to a first property of a tissue site. An uncompensated measurement is determinable from the primary input. A parameter input is responsive to a second property associated with the tissue site, where the first property is depe...
09/25/2007
7240833System and method of managing information for an implantable medical device
A method of collecting information related to manufacture of an implantable medical device, storing the information in a radio frequency identifier (RFID) unit, updating the information stored in the RFID unit during manufacturing of the implantable medical device, ...
07/10/2007
7233816Optical sampling interface system for in vivo measurement of tissue
An optical sampling interface system minimizes and compensates error resulting from sampling variations and measurement site state fluctuations. Components include: An optical probe placement guide having an aperture wherein the optical probe is received, facilitate...
06/19/2007
7227629Calibration tool for an optical measuring device with an optical fiber probe
An optical measurement device calibration tool includes an optical probe suitable for calibrating various optical imaging devices, for example, low coherence reflectometers and optical coherence tomography devices. In a preferred embodiment the calibration tool comp...
06/05/2007
7209774Pulse oximeter with separate ensemble averaging for oxygen saturation and heart rate
The use of two separate ensemble averagers for processing a detected waveform for use in calculating oxygen saturation and a pulse rate. The ensemble averager used for calculating oxygen saturation operates on a signal which has been normalized, while the ensemble a...
04/24/2007
7206623Optical sampling interface system for in vivo measurement of tissue
An optical sampling interface system minimizes and compensates error resulting from sampling variations and measurement site state fluctuations. Components include: An optical probe placement guide having an aperture wherein the optical probe is received, facilitate...
04/17/2007
7187810Methods and systems for correcting image misalignment
The invention provides methods of determining a correction for a misalignment between at least two images in a sequence of images due at least in part to sample movement. The methods are applied, for example, in the processing and analysis of a sequence of images of...
03/06/2007
7184809Pulse amplitude indexing method and apparatus
The invention is method and apparatus for determining a physiological characteristic by detecting the intensity of light following tissue absorption at two wavelengths, estimating the pulse amplitude and indexing a calculated physiological characteristic to the esti...
02/27/2007
7167734Method for optical measurements of tissue to determine disease state or concentration of an analyte
A method for collecting optical data at two morphologically similar, substantially non-overlapping, and preferably adjacent, areas on the surface of a tissue, while the temperature in each area is being maintained or modulated according to a temperature program. The...
01/23/2007
7147347Flashing light cable
A flashing light cable for electrically connecting a musical instrument or a microphone to an amplifier or to a sound system, for use by an entertainer to enhance the visual appeal of a stage performance. The cable comprises two jacks having an elongated cable porti...
12/12/2006
7142901Parameter compensated physiological monitor
A monitor has a primary input from which a spectral characteristic of a tissue site can be derived. The monitor also has a secondary input from which at least one parameter can be determined. A compensation relationship of the spectral characteristic, the parameter ...
11/28/2006
7130671Pulse oximeter sensor off detector
In a system for measuring a physiological parameter using at least one wavelength of electromagnetic energy transmitted through living tissue, a method for determining an operational status of the system. The method includes receiving a data signal from at least one...
10/31/2006
7127282Optical methods and systems for rapid screening of the cervix
A method and a system is provided for discriminating between healthy cervical tissue and pathologic cervical tissue based on the fluorescence response of the tissue to laser excitation (LIF) and the backscatter response to illumination by white light (in the spectra...
10/24/2006
7124048System and method for a self-calibrating non-invasive sensor
A non-invasive emitter-photodiode sensor which is able to provide a data-stream corresponding to the actual wavelength of light emitted thereby allowing calibration of the sensor signal processing equipment and resulting in accurate measurements over a wider variati...
10/17/2006
7096054Low noise optical housing
Aspects of the invention include an optical housing including a substrate having a reflective side and an absorbing side. The substrate has a generally planar base portion and a protruding cover portion. The cover portion defines a pocket on the absorbing side. The ...
08/22/2006
7072701Method for spectrophotometric blood oxygenation monitoring
A method and apparatus for non-invasively determining the blood oxygen saturation level within a subject's tissue is provided that utilizes a near infrared spectrophotometric (NIRS) sensor capable of transmitting a light signal into the tissue of a subject and sensi...
07/04/2006
7047056Hat-based oximeter sensor
A method for use and an improved oximeter sensor substrate that is conforming to the shape of the patient's forehead. In one embodiment, the present invention is an oximeter sensor, having a substrate with a shape similar to a shape of at least a portion of a patien...
05/16/2006
7039538Pulse oximeter with separate ensemble averaging for oxygen saturation and heart rate
The use of two separate ensemble averagers for processing a detected waveform for use in calculating oxygen saturation and a pulse rate. The ensemble averager used for calculating oxygen saturation operates on a signal which has been normalized, while the ensemble a...
05/02/2006
6992772Method and apparatus for optical sampling to reduce interfering variances
The present invention relates to a method and apparatus of that utilizes a reflective enclosure to simulate optical homogeneity in an otherwise inhomogeneous sample. The illumination sources and sample are placed within the reflective enclosure, thus providing a met...
01/31/2006
6972604Circuit for compensating LPF capacitor charge leakage in phase locked loop systems
The present invention provides for a low pass filter. A first capacitor, has a first associated leakage current. A second capacitor has a specified capacitance that is a fraction of the capacitance of the first capacitor, the second capacitor further having a second...
12/06/2005
6937882Sensor for transcutaneous measurement of vascular access blood flow
An optical sensor includes photoemitter and photodetector elements at multiple spacings (d1, d2) for the purpose of measuring the bulk absorptivity (α) of an area immediately surrounding and including a hemodialysis access site, and the absorp...
08/30/2005
6882874Compensation of human variability in pulse oximetry
The invention relates to the calibration of a pulse oximeter intended for non-invasively determining the amount of at least two light-absorbing substances in the blood of a subject. In order to bring about a solution by means of which the effects caused by the tissu...
04/19/2005
6839580Adaptive calibration for pulse oximetry
A method for calibrating a pulse oximeter device and an apparatus incorporating the method and a system for utilizing the method. The method is based on modeling light propagation in tissue at two wavelengths, typically, one in the red and one in the infrared range ...
01/04/2005
6801797Pulse oximeter sensor with piece-wise function
A memory in a sensor is used to store multiple coefficients for a physiological parameter. In one embodiment, not only are the sensor's specific calibration coefficients stored in a memory in the sensor for the formula to determine oxygen saturation, but multiple se...
10/05/2004
6760609Adaptive calibration pulsed oximetry method and device
A method for determining an arterial blood oxygen saturation level according to this invention includes measuring the light transmittance through tissue of light of a first wavelength and a second wavelength. A steady-state component of the measured light transmissi...
07/06/2004
6711425Pulse oximeter with calibration stabilization
An improved pulse oximeter (sensor and monitor) uses a plurality of wavelengths selected to provide sensitivity to both oxygen saturation and deviations in tissue site characteristic(s) from conditions at calibration. The monitor detects and/or removes the effects o...
03/23/2004
6708049Sensor with signature of data relating to sensor
A sensor has codes useful for a monitor which can be authenticated as accurate. The sensor produces a signal corresponding to a measured physiological characteristic and provides codes which can be assured of being accurate and authentic when used by a monitor. A me...
03/16/2004
6675031Method and circuit for indicating quality and accuracy of physiological measurements
Sensors and monitors for a physiological monitoring system having capability to indicate an accuracy of an estimated physiological condition. The sensor senses at least one physiological characteristic of a patient and is connectable to a monitor that est...
01/06/2004
6668183Diode detection circuit
A photoplethysmographic system and method is provided to identify compatible sensors to monitors and/or for determining sensor attributes. The improved system includes a signal generation means for providing an interrogation signal, an identifying means c...
12/23/2003
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