US Patent No: 8,128,572

Number of patents in Portfolio can not be more than 2000

Signal processing apparatus

2 Status Updates

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ALSO PUBLISHED AS: 20090076400
ATTORNEY / AGENT: (SPONSORED)
 

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Abstract

The present invention involves method and apparatus for analyzing measured signals that are modeled as containing primary and secondary portions. Coefficients relate the two signals according to a model defined in accordance with the present invention. In one embodiment, the present invention involves utilizing a transformation which evaluates a plurality of possible signal coefficients in order to find appropriate coefficients. Alternatively, the present invention involves using statistical functions or Fourier transform and windowing techniques to determine the coefficients relating to two measured signals. Use of this invention is described in particular detail with respect to blood oximetry measurements.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
MASIMO CORPORATIONIRVINE, CA267

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Diab, Mohamed K Laguna Niguel, CA 134 12415
Elfadel, Ibrahim M Laguna Niguel, CA 90 3857
Kiani-Azarbayjany, Esmaiel Laguna Niguel, CA 68 8108
McCarthy, Rex J Mission Viejo, CA 43 3790
Smith, Robert A Corona, CA 200 6849
Weber, Walter M Los Angeles, CA 101 7757

Cited Art

Patent Info (Count) # Cites Year
 
MASIMO CORPORATION (188)
4,960,128 Method and apparatus for continuously and non-invasively measuring the blood pressure of a patient 187 1988
5,163,438 Method and apparatus for continuously and noninvasively measuring the blood pressure of a patient 192 1990
5,431,170 Pulse responsive device 384 1992
5,494,043 Arterial sensor 246 1993
5,337,744 Low noise finger cot probe 327 1993
5,490,505 Signal processing apparatus 411 1993
5,533,511 Apparatus and method for noninvasive blood pressure measurement 260 1994
5,590,649 Apparatus and method for measuring an induced perturbation to determine blood pressure 201 1994
D361840 Stethoscope head 125 1994
D362063 Stethoscope headset 122 1994
D363120 Stethoscope ear tip 127 1994
5,482,036 Signal processing apparatus and method 376 1994
5,452,717 Finger-cot probe 314 1994
5,632,272 Signal processing apparatus 386 1994
5,638,818 Low noise optical probe 303 1994
5,758,644 Manual and automatic probe calibration 383 1995
5,769,785 Signal processing apparatus and method 316 1995
5,645,440 Patient cable connector 287 1995
5,782,757 Low-noise optical probes 336 1995
D393830 Patient cable connector 275 1995
5,810,734 Apparatus and method for measuring an induced perturbation to determine a physiological parameter 183 1995
5,830,131 Apparatus and method for measuring an induced perturbation to determine a physical condition of the human arterial system 204 1995
5,833,618 Apparatus and method for measuring an induced perturbation to determine a physiological parameter 191 1995
5,685,299 Signal processing apparatus 312 1995
5,904,654 Exciter-detector unit for measuring physiological parameters 191 1996
5,785,659 Automatically activated blood pressure measurement device 178 1996
5,823,950 Manual and automatic probe calibration 275 1996
6,088,607 Low noise optical probe 335 1997
5,934,925 Patient cable connector 279 1997
6,002,952 Signal processing apparatus and method 351 1997
6,157,850 Signal processing apparatus 308 1997
5,890,929 Shielded medical connector 272 1997
6,081,735 Signal processing apparatus 420 1997
6,263,222 Signal processing apparatus 322 1997
6,184,521 Photodiode detector with integrated noise shielding 277 1998
5,919,134 Method and apparatus for demodulating signals in a pulse oximetry system 295 1998
6,011,986 Manual and automatic probe calibration 324 1998
5,995,855 Pulse oximetry sensor adapter 315 1998
6,525,386 Non-protruding optoelectronic lens 284 1998
5,997,343 Patient cable sensor switch 266 1998
6,229,856 Method and apparatus for demodulating signals in a pulse oximetry system 272 1998
6,067,462 Signal processing apparatus and method 310 1998
6,256,523 Low-noise optical probes 323 1998
6,036,642 Signal processing apparatus and method 300 1998
7,376,453 Signal processing apparatus 81 1998
7,328,053 Signal processing apparatus 89 1998
6,236,872 Signal processing apparatus 290 1998
6,144,868 Reusable pulse oximeter probe and disposable bandage apparatus 228 1999
6,334,065 Stereo pulse oximeter 306 1999
6,285,896 Fetal pulse oximetry sensor 271 1999
6,321,100 Reusable pulse oximeter probe with disposable liner 217 1999
6,349,228 Pulse oximetry sensor adapter 280 1999
6,632,181 Rapid non-invasive blood pressure measuring device 232 1999
6,343,224 Reusable pulse oximeter probe and disposable bandage apparatus 219 1999
6,580,086 Shielded optical probe and method 306 1999
6,943,348 System for detecting injection holding material 140 1999
6,206,830 Signal processing apparatus and method 284 1999
6,165,005 Patient cable sensor switch 261 1999
6,377,829 Resposable pulse oximetry sensor 296 1999
6,152,754 Circuit board based cable connector 286 1999
6,463,311 Plethysmograph pulse recognition processor 262 1999
6,606,511 Pulse oximetry pulse indicator 288 2000
6,515,273 System for indicating the expiration of the useful operating life of a pulse oximetry sensor 279 2000
6,584,336 Universal/upgrading pulse oximeter 298 2000
6,360,114 Pulse oximeter probe-off detector 295 2000
6,699,194 Signal processing apparatus and method 286 2000
6,430,525 Variable mode averager 265 2000
6,526,300 Pulse oximeter probe-off detection system 259 2000
6,470,199 Elastic sock for positioning an optical probe 272 2000
6,697,656 Pulse oximetry sensor compatible with multiple pulse oximetry systems 257 2000
6,770,028 Dual-mode pulse oximeter 268 2000
6,519,487 Reusable pulse oximeter probe and disposable bandage apparatus 219 2000
6,280,213 Patient cable connector 277 2000
6,542,764 Pulse oximeter monitor for expressing the urgency of the patient's condition 265 2000
6,643,530 Method and apparatus for demodulating signals in a pulse oximetry system 261 2000
6,501,975 Signal processing apparatus and method 311 2001
6,684,091 Reusable pulse oximeter probe and disposable bandage method 212 2001
6,541,756 Shielded optical probe having an electrical connector 274 2001
6,388,240 Shielded optical probe and method having a longevity indication 291 2001
6,684,090 Pulse oximetry data confidence indicator 298 2001
6,792,300 Low-noise optical probes for reducing light piping 253 2001
6,595,316 Tension-adjustable mechanism for stethoscope earpieces 131 2001
6,721,585 Universal modular pulse oximeter probe for use with reusable and disposable patient attachment devices 211 2001
6,597,933 Pulse oximetry sensor adapter 269 2001
6,678,543 Optical probe and positioning wrap 318 2001
6,745,060 Signal processing apparatus 268 2001
6,650,917 Signal processing apparatus 298 2001
6,671,531 Sensor wrap including foldable applicator 285 2001
6,654,624 Pulse oximeter probe-off detector 286 2001
6,760,607 Ribbon cable substrate pulse oximetry sensor 242 2001
6,714,804 Stereo pulse oximeter 271 2001
6,852,083 System and method of determining whether to recalibrate a blood pressure monitor 165 2002
6,658,276 Pulse oximeter user interface 278 2002
RE38492 Signal processing apparatus and method 260 2002
6,725,075 Resposable pulse oximetry sensor 267 2002
6,985,764 Flex circuit shielded optical sensor 221 2002
6,697,658 Low power pulse oximeter 282 2002
6,661,161 Piezoelectric biological sound monitor with printed circuit board 142 2002
RE38476 Signal processing apparatus 256 2002
6,999,904 Variable indication estimator 138 2002
6,735,459 Reusable pulse oximeter probe and disposable bandage apparatus 213 2002
6,813,511 Low-noise optical probes for reducing ambient noise 261 2002
6,816,741 Plethysmograph pulse recognition processor 248 2002
7,245,953 Reusable pulse oximeter probe and disposable bandage apparatii 106 2002
6,934,570 Physiological sensor combination 236 2002
6,826,419 Signal processing apparatus and method 247 2002
6,830,711 Mold tool for an optoelectronic element 244 2003
7,067,893 Optoelectronic element with a non-protruding lens 192 2003
7,225,006 Attachment and optical probe 158 2003
6,822,564 Parallel measurement alarm processor 251 2003
6,950,687 Isolation and communication element for a resposable pulse oximetry sensor 233 2003
7,015,451 Power supply rail controller 129 2003
6,861,639 Systems and methods for indicating an amount of use of a sensor 245 2003
6,771,994 Pulse oximeter probe-off detection system 255 2003
6,850,788 Physiological measurement communications adapter 239 2003
7,509,494 Interface cable 48 2003
7,132,641 Shielded optical probe having an electrical connector 194 2003
7,428,432 Systems and methods for acquiring calibration data usable in a pulse oximeter 61 2003
6,993,371 Pulse oximetry sensor adaptor 242 2003
7,096,054 Low noise optical housing 188 2003
7,341,559 Pulse oximetry ear sensor 88 2003
6,898,452 Stereo pulse oximeter 230 2003
7,274,955 Parameter compensated pulse oximeter 86 2003
7,254,433 Signal processing apparatus 173 2003
7,496,393 Signal processing apparatus 48 2003
7,096,052 Optical probe including predetermined emission wavelength based on patient type 180 2003
6,939,305 Rapid non-invasive blood pressure measuring device 138 2003
7,003,339 Method and apparatus for demodulating signals in a pulse oximetry system 208 2003
7,142,901 Parameter compensated physiological monitor 178 2003
7,471,969 Pulse oximeter probe-off detector 53 2003
6,996,427 Pulse oximetry data confidence indicator 246 2003
7,039,449 Resposable pulse oximetry sensor 214 2003
7,496,391 Manual and automatic probe calibration 47 2004
7,469,157 Signal processing apparatus 47 2004
7,295,866 Low power pulse oximeter 153 2004
7,471,971 Signal processing apparatus and method 48 2004
7,215,984 Signal processing apparatus 217 2004
7,499,741 Signal processing apparatus and method 56 2004
7,530,955 Signal processing apparatus 48 2004
7,500,950 Multipurpose sensor port 50 2004
7,530,949 Dual-mode pulse oximeter 55 2004
7,254,431 Physiological parameter tracking system 82 2004
7,024,233 Pulse oximetry data confidence indicator 219 2004
7,483,730 Low-noise optical probes for reducing ambient noise 47 2004
7,254,434 Variable pressure reusable sensor 165 2004
7,044,918 Plethysmograph pulse recognition processor 125 2004
7,030,749 Parallel measurement alarm processor 149 2004
7,483,729 Pulse oximeter access apparatus and method 47 2004
7,373,193 Pulse oximetry data capture system 92 2004
7,383,070 Signal processing apparatus 80 2004
7,280,858 Pulse oximetry sensor 166 2005
7,373,194 Signal component processor 73 2005
7,371,981 Connector switch 74 2005
D554263 Portable patient monitor 86 2005
D566282 Stand for a portable patient monitor 72 2005
6,979,812 Systems and methods for indicating an amount of use of a sensor 206 2005
2005/0209,517 Signal processing apparatus 33 2005
7,438,683 Application identification sensor 57 2005
7,415,297 Physiological parameter system 60 2005
7,292,883 Physiological assessment system 81 2005
7,761,128 Physiological monitor 31 2005
7,215,986 Signal processing apparatus 112 2005
7,041,060 Rapid non-invasive blood pressure measuring device 122 2005
7,272,425 Pulse oximetry sensor including stored sensor data 122 2005
7,340,287 Flex circuit shielded optical sensor 73 2005
7,186,966 Amount of use tracking device and method for medical product 117 2005
7,221,971 Method and apparatus for demodulating signals in a pulse oximetry system 92 2005
7,377,794 Multiple wavelength sensor interconnect 73 2006
7,499,835 Variable indication estimator 53 2006
RE41317 Universal modular pulse oximeter probe for use with reusable and disposable patient attachment devices 37 2006
7,190,261 Arrhythmia alarm processor 100 2006
7,618,375 Rapid non-invasive blood pressure measuring device 40 2006
7,377,899 Sine saturation transform 71 2006
7,489,958 Signal processing apparatus and method 57 2006
7,454,240 Signal processing apparatus 51 2006
7,332,784 Method of providing an optoelectronic element with a non-protruding lens 72 2006
7,530,942 Remote sensing infant warmer 47 2006
7,526,328 Manual and automatic probe calibration 47 2006
7,355,512 Parallel alarm processor 77 2007
2007/0225,581 SIGNAL PROCESSING APPARATUS 33 2007
7,467,002 Sine saturation transform 51 2007
7,509,154 Signal processing apparatus 54 2007
7,734,320 Sensor isolation 35 2007
D587657 Connector assembly 48 2007
D609193 Connector assembly 41 2007
D614305 Connector assembly 38 2008
2009/0099,430 SIGNAL PROCESSING APPARATUS 12 2008
2009/0182,211 SIGNAL PROCESSING APPARATUS 13 2009
 
CERCACOR LABORATORIES, INC. (29)
5,638,816 Active pulse blood constituent monitoring 277 1995
5,743,262 Blood glucose monitoring system 454 1995
5,760,910 Optical filter for spectroscopic measurement and method of producing the optical filter 261 1995
5,860,919 Active pulse blood constituent monitoring method 292 1997
6,110,522 Blood glucose monitoring system 188 1998
5,940,182 Optical filter for spectroscopic measurement and method of producing the optical filter 261 1998
6,151,516 Active pulse blood constituent monitoring 244 1998
6,278,522 Optical filter for spectroscopic measurement and method of producing the optical filter 261 1999
6,639,668 Asynchronous fluorescence scan 79 2000
6,931,268 Active pulse blood constituent monitoring 143 2000
6,597,932 Generation of spatially-averaged excitation-emission map in heterogeneous tissue 82 2001
6,640,116 Optical spectroscopy pathlength measurement system 233 2001
6,920,345 Optical sensor including disposable and reusable elements 226 2003
6,961,598 Pulse and active pulse spectraphotometry 190 2003
7,003,338 Method and apparatus for reducing coupling between signals 202 2003
7,149,561 Optical spectroscopy pathlength measurement system 96 2003
7,027,849 Blood parameter measurement system 241 2003
6,970,792 Systems and methods for determining blood oxygen saturation values using complex number encoding 143 2003
7,343,186 Multi-wavelength physiological monitor 83 2005
7,289,835 Multivariate analysis of green to ultraviolet spectra of cell and tissue samples 98 2005
7,225,007 Optical sensor including disposable and reusable elements 100 2005
7,239,905 Active pulse blood constituent monitoring 91 2005
7,440,787 Systems and methods for determining blood oxygen saturation values using complex number encoding 52 2005
7,596,398 Multiple wavelength sensor attachment 43 2006
7,647,083 Multiple wavelength sensor equalization 40 2006
7,729,733 Configurable physiological measurement system 38 2006
7,761,127 Multiple wavelength sensor substrate 31 2006
7,563,110 Multiple wavelength sensor interconnect 46 2008
D606659 Patient monitor 53 2008
 
NELLCOR PURITAN BENNETT INCORPORATED (20)
4,802,486 Method and apparatus for detecting optical pulses 184 1985
4,653,498 Pulse oximeter monitor 309 1986
4,800,495 Method and apparatus for processing signals used in oximetry 207 1986
4,819,646 Feedback-controlled method and apparatus for processing signals used in oximetry 133 1986
4,859,056 Multiple-pulse method and apparatus for use in oximetry 120 1986
4,869,253 Method and apparatus for indicating perfusion and oxygen saturation trends in oximetry 188 1986
4,913,150 Method and apparatus for the automatic calibration of signals employed in oximetry 227 1986
4,869,254 Method and apparatus for calculating arterial oxygen saturation 236 1988
4,911,167 Method and apparatus for detecting optical pulses 262 1988
4,928,692 Method and apparatus for detecting optical pulses 187 1988
4,892,101 Method and apparatus for offsetting baseline portion of oximeter signal 162 1989
4,934,372 Method and apparatus for detecting optical pulses 207 1989
5,259,381 Apparatus for the automatic calibration of signals employed in oximetry 184 1989
5,078,136 Method and apparatus for calculating arterial oxygen saturation based plethysmographs including transients 190 1989
5,218,962 Multiple region pulse oximetry probe and oximeter 157 1991
RE35122 Method and apparatus for detecting optical pulses 149 1992
5,368,026 Oximeter with motion detection for alarm modification 167 1993
5,853,364 Method and apparatus for estimating physiological parameters using model-based adaptive filtering 231 1996
6,083,172 Method and apparatus for estimating physiological parameters using model-based adaptive filtering 161 1998
6,411,833 Method and apparatus for estimating physiological parameters using model-based adaptive filtering 137 1999
 
CEDARS-SINAI MEDICAL CENTER (7)
5,377,676 Method for determining the biodistribution of substances using fluorescence spectroscopy 141 1993
5,341,805 Glucose fluorescence monitor and method 169 1993
5,456,252 Induced fluorescence spectroscopy blood perfusion and pH monitor and method 128 1993
6,232,609 Glucose monitoring apparatus and method using laser-induced emission spectroscopy 93 1995
6,124,597 Method and devices for laser induced fluorescence attenuation spectroscopy 148 1997
6,697,657 Method and devices for laser induced fluorescence attenuation spectroscopy (LIFAS) 80 2000
RE39672 Method and devices for laser induced fluorescence attenuation spectroscopy 84 2002
 
KONINKLIJKE PHILIPS ELECTRONICS N.V. (7)
4,667,680 Apparatus and method for reduction in respiration artifact in pulmonary artery pressure measurement 31 1983
5,299,120 Method for digitally processing signals containing information regarding arterial blood flow 116 1989
5,188,108 Sensor, apparatus and method for non-invasive measurement of oxygen saturation 160 1991
5,285,784 Sensor, apparatus and method for non-invasive measurement of oxygen saturation 118 1992
5,800,348 Apparatus and method for medical monitoring, in particular pulse oximeter 133 1996
6,631,281 Recognition of a useful signal in a measurement signal 115 2002
6,654,623 Interference suppression for measuring signals with periodic wanted signals 132 2002
 
MINOLTA CAMERA KABUSHIKI KAISHA (7)
4,266,554 Digital oximeter 180 1979
4,305,398 Eye fundus oximeter 69 1979
4,446,871 Optical analyzer for measuring a construction ratio between components in the living tissue 109 1980
4,586,513 Noninvasive device for photoelectrically measuring the property of arterial blood 180 1983
4,714,341 Multi-wavelength oximeter having a means for disregarding a poor signal 261 1985
4,694,833 Noninvasive device for photoelectrically measuring the property of arterial blood 151 1986
4,942,877 Device for measuring oxygen saturation degree in arterial blood 252 1987
 
UNIVERSITY OF SOUTH FLORIDA (4)
5,575,284 Portable pulse oximeter 285 1994
5,830,137 Green light pulse oximeter 166 1996
6,011,985 Medical diagnostic instrument using light-to-frequency converter 131 1996
6,330,468 System using green light to determine parmeters of a cardiovascular system 137 1998
 
CARDIAC PACEMAKERS, INC. (3)
4,793,361 Dual channel P-wave detection in surface electrocardiographs 67 1987
4,799,486 Refractoriless atrial sensing in dual chamber pacemakers 81 1987
4,799,493 Dual channel coherent fibrillation detection system 135 1987
 
CRITICARE SYSTEMS, INC. (3)
4,860,759 Vital signs monitor 106 1987
4,960,126 ECG synchronized pulse oximeter 186 1988
5,842,981 Direct to digital oximeter 175 1996
 
CURATECHNOLOGIES INC. (3)
D353195 Electronic stethoscope housing 122 1993
D353196 Stethoscope head 132 1993
5,602,924 Electronic stethescope 130 1993
 
DATEX-OHMEDA, INC. (3)
4,800,885 Blood constituent monitoring apparatus and methods with frequency division multiplexing 195 1987
5,934,277 System for pulse oximetry SpO2 determination 163 1995
6,253,097 Noninvasive medical monitoring instrument using surface emitting laser devices 149 1996
 
GLT ACQUISITION CORP. (3)
7,356,365 Method and apparatus for tissue oximetry 37 2004
7,254,429 Method and apparatus for monitoring glucose levels in a biological tissue 96 2004
7,510,849 OCT based method for diagnosis and therapy 35 2005
 
PHILIPS ELECTRONICS NORTH AMERICA CORPORATION (3)
5,170,791 Method and apparatus for calculating the fetal heart rate 15 1991
6,122,535 Method and apparatus for determining the concentration of a component 133 1998
6,725,074 Quality indicator for measurement signals, in particular, for medical measurement signals such as those used in measuring oxygen saturation 113 2002
 
SANDIA CORPORATION (3)
5,355,880 Reliable noninvasive measurement of blood gases 324 1992
5,494,032 Oximeter for reliable clinical determination of blood oxygen saturation in a fetus 234 1994
5,630,413 Reliable noninvasive measurement of blood gases 230 1994
 
THE GENERAL HOSPITAL CORPORATION (3)
6,505,059 Non-invasive tissue glucose level monitoring 167 1999
6,721,582 Non-invasive tissue glucose level monitoring 98 2001
6,728,560 Non-invasive tissue glucose level monitoring 156 2002
 
THOR TECHNOLOGY CORPORATION (3)
4,964,408 Oximeter sensor assembly with integral cable 262 1988
5,069,213 Oximeter sensor assembly with integral cable and encoder 231 1989
5,041,187 Oximeter sensor assembly with integral cable and method of forming the same 199 1990
 
COROMETRICS MEDICAL SYSTEMS, INC. (2)
4,519,396 Fetal heart rate monitor apparatus and method for combining electrically and mechanically derived cardiographic signals 51 1981
4,582,068 Systems and methods for processing physiological signals 23 1984
 
JOHNSON & JOHNSON MEDICAL, INC. (2)
4,848,901 Pulse oximeter sensor control system 181 1987
4,807,631 Pulse oximetry system 170 1987
 
SENSORMEDICS CORPORATION (2)
4,824,242 Non-invasive oximeter and method 245 1986
4,867,571 Wave form filter pulse detector and method for modulated signal 87 1989
 
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY (2)
4,238,746 Adaptive line enhancer 85 1978
4,243,935 Adaptive detector 61 1979
 
VITAL INSITE, INC. (2)
6,045,509 Apparatus and method for measuring an induced perturbation to determine a physiological parameter 175 1998
6,371,921 System and method of determining whether to recalibrate a blood pressure monitor 248 1999
 
AGILENT TECHNOLOGIES, INC. (1)
5,152,296 Dual-finger vital signs monitor 182 1990
 
ALLEGHENY-SINGER RESEARCH INSTITUTE (1)
4,751,931 Method and apparatus for determining his-purkinje activity 70 1986
 
ANDROMED, INC. (1)
5,561,275 Headset for electronic stethoscope 91 1994
 
ARRHYTHMIA RESEARCH TECHNOLOGY, INC. (1)
4,458,691 System and method for predicting ventricular tachycardia by adaptive high pass filter 66 1982
 
BIOS INC. (1)
4,197,836 Nuclear cardiac blood volume detecting apparatus 26 1978
 
BRITISH TECHNOLOGY GROUP LIMITED (1)
4,951,680 Fetal monitoring during labor 47 1988
 
CARDIO ACCESS LLC (1)
4,819,752 Blood constituent measuring device and method 230 1987
 
CHILDREN'S HOSPITAL OF PHILADELPHIA (1)
6,438,399 Multi-wavelength frequency domain near-infrared cerebral oximeter 142 2000
 
COLIN ELECTRONICS CO., LTD. (1)
4,796,636 Noninvasive reflectance oximeter 145 1987
 
COLIN MEDICAL TECHNOLOGY CORPORATION (1)
5,054,495 Automatic blood-pressure measuring apparatus 69 1989
 
COVIDIEN LP (1)
6,701,170 Blind source separation of pulse oximetry signals 138 2001
 
E FOR M CORPORATION (1)
5,273,036 Apparatus and method for monitoring respiration 182 1993
 
ERICSSON INC. (1)
4,649,505 Two-input crosstalk-resistant adaptive noise canceller 153 1984
 
FIRST BANK NATIONAL ASSOCIATION (1)
4,773,422 Single channel pulse oximeter 208 1987
 
GEBR. LODIGE MASCHINENBAU GMBH (1)
D393476 Industrial mixing machine 13 1996
 
HAIR ART, INC. (1)
4,867,165 Method for determining the perfusion 48 1987
 
INVIVO RESEARCH, INC. (1)
4,948,248 Blood constituent measuring device and method 158 1989
 
LIFE FITNESS, A GENERAL PARTNERSHIP OF NY (1)
5,243,993 Apparatus and method for measuring heart rate 60 1991
 
MASIMO LABORATORIES, INC. (1)
6,850,787 Signal component processor 236 2002
 
MASSACHUSETTS INSTITUTE OF TECHNOLOGY (1)
4,956,867 Adaptive beamforming for noise reduction 121 1989
 
MCGILL UNIVERSITY (1)
6,241,683 Phonospirometry for non-invasive monitoring of respiration 104 1999
 
MESSER GRIESHEIM GMBH (1)
4,967,571 Device for the cryogenic pelletization of liquids 43 1989
 
MINISTRY OF INTERNATIONAL TRADE & INDUSTRY (1)
5,003,977 Device for analyzing fluorescent light signals 46 1989
 
MOBIL OIL CORPORATION (1)
4,858,199 Method and apparatus for cancelling nonstationary sinusoidal noise from seismic data 35 1988
 
MSA (1)
4,863,265 Apparatus and method for measuring blood constituents 222 1987
 
NATIONAL INSTITUTES OF HEALTH (NIH), U.S. DEPT. OF HEALTH AND HUMAN SERVICES (DHHS), U.S. GOVERNMENT (1)
6,397,091 Manual and automatic probe calibration 312 1999
 
NATIONAL RESEARCH DEVELOPMENT CORPORATION (1)
4,955,379 Motion artefact rejection system for pulse oximeters 187 1988
 
NEC CORPORATION (1)
4,723,294 Noise canceling system 63 1986
 
NICOLAY GMBH (1)
4,907,594 Method for the determination of the saturation of the blood of a living organism with oxygen and electronic circuit for performing this method 99 1988
 
NIHON KOHDEN CORPORATION (1)
5,355,882 Pulse oximeter 124 1993
 
OMRON TATEISI ELECTRONICS CO. (1)
4,927,264 Non-invasive measuring method and apparatus of blood constituents 201 1988
 
OTSUKA ELECTRONICS CO., LTD. (1)
5,057,695 Method of and apparatus for measuring the inside information of substance with the use of light scattering 164 1989
 
OXIMETRIX, INC. (1)
4,623,248 Apparatus and method for determining oxygen saturation levels with increased accuracy 68 1983
 
PROTOCOL SYSTEMS, INC. (1)
4,949,710 Method of artifact rejection for noninvasive blood-pressure measurement by prediction and adjustment of blood-pressure data 93 1988
 
PURITAN-BENNETT CORPORATION (1)
4,883,353 Pulse oximeter 159 1988
 
RCA LICENSING CORPORATION, TWO INDEPENDENCE WAY, PRINCETON, NJ 08540, A CORP. OF DE (1)
4,617,589 Adaptive frame comb filter system 40 1984
 
RIC INVESTMENTS, LLC. (1)
5,448,991 Method of measuring the oxygen saturation in pulsating blood flow 125 1992
 
SANKYO COMPANY, LIMITED (1)
5,379,774 Measurement of arterial elasticity and the frequency characteristic of the compliance of an artery 32 1994
 
SEIKO INSTRUMENTS INC. (1)
5,190,047 Photoelectric pulsation type pulsimeter 21 1990
 
SENSIDYNE, INC. (1)
5,562,002 Positive displacement piston flow meter with damping assembly 121 1995
 
SONY DEUTSCHLAND GMBH (1)
2005/0200,531 Circular polarised array antenna 2005
 
SPACELABS MEDICAL, LLC (1)
5,662,105 System and method for the extractment of physiological signals 115 1995
 
SUMITOMO ELECTRIC INDUSTRIES, LTD. (1)
5,154,176 Liver function testing apparatus 16 1991
 
THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY (1)
4,537,200 ECG enhancement by adaptive cancellation of electrosurgical interference 114 1983
 
THE BOC GROUP, INC. (1)
4,407,290 Blood constituent measuring device and method 284 1981
 
THE CLEVELAND CLINIC FOUNDATION (1)
4,897,162 Pulse voltammetry 202 1988
 
THE PERKIN-ELMER CORPORATION (1)
4,883,356 Spectrometer detector mounting assembly 33 1988
 
THERATECHNOLOGIES INC. (1)
D359546 Housing for a dental unit disinfecting device 81 1994
 
U.S. PHILIPS CORPORATION (1)
5,040,201 X-ray exposure synchronization method and apparatus 21 1990
 
UNION TRUST COMPANY (1)
5,190,038 Pulse oximeter with improved accuracy and response time 182 1989
 
UNIVERSITE LAVAL (1)
6,368,283 Method and apparatus for estimating systolic and mean pulmonary artery pressures of a patient 131 2000
 
UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC. (1)
6,496,711 Pulse oximeter probe 107 2000
 
UNIVERSITY OF MEDICINE AND DENTISTRY OF NEW JERSEY (1)
5,036,857 Noninvasive diagnostic system for coronary artery disease 66 1989
 
UPS AVIATION TECHNOLOGIES, INC. (1)
5,042,499 Noninvasive electrocardiographic method of real time signal processing for obtaining and displaying instantaneous fetal heart rate and fetal heart rate beat-to-beat variability 63 1990
 
VITA INSITE, INC. (1)
6,027,452 Rapid non-invasive blood pressure measuring device 185 1996
 
VITAL INSIGHT, INC. (1)
5,791,347 Motion insensitive pulse detector 184 1996
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (16)
4,781,200 Ambulatory non-invasive automatic fetal monitoring system 120 1985
5,246,022 Apparatus for holding dental floss containers and spools 21 1991
5,379,238 Signal processing method and apparatus 136 1992
5,458,128 Method and apparatus for noninvasively measuring concentration of a dye in arterial blood 78 1994
2002/0128,544 Signal processing apparatus 127 2002
2004/0068,164 Signal processing apparatus 112 2003
2004/0204,637 Signal processing apparatus and method 94 2004
2004/0210,146 Signal processing apparatus 90 2004
2006/0200,016 Signal processing apparatus and method 28 2006
2007/0249,918 SIGNAL PROCESSING APPARATUS 28 2007
2007/0291,832 SIGNAL PROCESSING APPARATUS 30 2007
2008/0004,514 SIGNAL PROCESSING APPARATUS 30 2007
2008/0033,266 Signal processing apparatus 32 2007
2008/0036,752 SIGNAL PROCESSING APPARATUS AND METHOD 27 2007
2008/0045,823 SIGNAL PROCESSING APPARATUS 29 2007
2009/0076,400 SIGNAL PROCESSING APPARATUS 12 2008

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
CERCACOR LABORATORIES, INC. (1)
8,437,825 Contoured protrusion for improving spectroscopic measurement of blood constituents 0 2009
 
GLT ACQUISITION CORP. (1)
8,306,596 Method for data reduction and calibration of an OCT-based physiological monitor 0 2010
 
MASIMO CORPORATION (1)
8,430,817 System for determining confidence in respiratory rate measurements 0 2010

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