US Patent No: 5,158,091

Number of patents in Portfolio can not be more than 2000

Tonometry system for determining blood pressure

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Abstract

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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 comprises a continuous diaphragm placed against a patient's tissue which covers an underlying artery. The semiconductor assembly is placed in close proximity to and spaced apart from the diaphragm for directly irradiating the diaphragm with electromagnetic radiation and receiving a portion of the electromagnetic radiation which is reflected from the continuous diaphragm. The disclosed system also utilizes a technique for minimizing the system errors associated with temperature drift and aging of the sensor.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
CAREFUSION 303, INC.SAN DIEGO, CA399

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Butterfield, Robert D Poway, CA 75 998
Holdaway, Charles R San Diego, CA 16 407
Martin, Stephen A San Diego, CA 20 523
Pytel, Kenneth J San Diego, CA 6 244

Cited Art Landscape

Patent Info (Count) # Cites Year
 
RADI MEDICAL SYSTEMS AB (2)
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5,085,223 Miniaturized pressure sensor having means for protection of diaphragm 47 1990
 
JPMORGAN CHASE BANK, N.A. (1)
2005/0256,385 Signal processing apparatus 2005
 
MEDEX, INC. (1)
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OMRON HEALTHCARE CO., LTD. (1)
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RCA Corporation (1)
4,753,243 Pulse rate monitor 4 1987
 
Other [Check patent profile for assignment information] (2)
4,307,728 Portable device for measuring heartbeat rate with compensation for extraneous signals 25 1979
4,803,992 Electro-optical instruments and methods for producing same 106 1986

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
TENSYS MEDICAL, INC. (11)
6,514,211 Method and apparatus for the noninvasive determination of arterial blood pressure 65 2000
6,554,774 Method and apparatus for assessing hemodynamic properties within the circulatory system of a living subject 65 2000
6,705,990 Method and apparatus for monitoring physiologic parameters of a living subject 65 2000
6,676,600 Smart physiologic parameter sensor and method 45 2000
7,503,896 Method and apparatus for the noninvasive assessment of hemodynamic parameters including blood vessel location 4 2001
7,048,691 Method and apparatus for assessing hemodynamic parameters within the circulatory system of a living subject 21 2001
6,730,038 Method and apparatus for non-invasively measuring hemodynamic parameters using parametrics 37 2002
7,867,170 Method and apparatus for non-invasively measuring hemodynamic parameters using parametrics 0 2004
7,946,994 Compact apparatus and methods for non-invasively measuring hemodynamic parameters 1 2004
8,328,727 Method and apparatus for assessing hemodynamic parameters within the circulatory system of a living subject 0 2006
8,597,195 Method and apparatus for non-invasively measuring hemodynamic parameters using parametrics 0 2011
 
TARILIAN LASER TECHNOLOGIES, LIMITED (7)
8,360,985 Optical vital sign detection method and measurement device 1 2007
8,343,063 Optical vital sign detection method and measurement device 0 2007
7,822,299 Optical power modulation vital sign detection method and measurement device 6 2007
7,463,796 Waveguide and optical motion sensor using optical power modulation 5 2007
7,657,135 Waveguide and optical motion sensor using optical power modulation 5 2008
8,111,953 Optical power modulation vital sign detection method and measurement device 3 2010
8,467,636 Optical power modulation vital sign detection method and measurement device 0 2012
 
CAREFUSION 303, INC. (5)
5,263,484 Method of determining which portion of a stress sensor is best positioned for use in determining intra-arterial blood pressure 8 1992
5,284,150 Tonometry system for determining blood pressure 27 1992
5,261,412 Method of continuously monitoring blood pressure 33 1992
5,908,027 Tonometry system for monitoring blood pressure 61 1997
6,290,650 Tonometry system for monitoring blood pressure 32 1999
 
BAXTER INTERNATIONAL INC. (4)
6,985,870 Medication delivery system 133 2002
7,668,731 Medication delivery system 10 2003
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In-Line Diagnostics Corporation (4)
5,456,253 Disposable extracorporeal conduit for blood constituent monitoring 26 1994
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6,090,061 Disposable extracorporeal conduit for blood constituent monitoring 7 1997
6,266,546 System for noninvasive hematocrit monitoring 159 1998
 
FRESENIUS MEDICAL CARE HOLDINGS, INC. (3)
6,746,415 Method of blood constituent monitoring using improved disposable extracorporeal conduit 10 2000
6,681,128 System for noninvasive hematocrit monitoring 100 2001
6,804,543 Sensor for transcutaneous measurement of vascular access blood flow 15 2002
 
OSRAM AG (3)
6,459,130 Optoelectronic semiconductor component 63 1999
6,927,469 Surface mountable light emitting or receiving device 1 2002
7,199,454 Optoelectronic semiconductor component 2 2004
 
HEMA METRICS, INC. (2)
6,987,993 Sensor for transcutaneous measurement of vascular access blood flow 3 2003
6,937,882 Sensor for transcutaneous measurement of vascular access blood flow 2 2003
 
IN-LINE DIAGNOSTICS (2)
6,746,407 Method of measuring transcutaneous access blood flow 9 2000
6,725,072 Sensor for transcutaneous measurement of vascular access blood flow 0 2000
 
LIFESYNC CORPORATION (2)
6,533,729 Optical noninvasive blood pressure sensor and method 90 2000
6,475,153 Method for obtaining blood pressure data from optical sensor 79 2000
 
RUTGERS, THE STATE UNIVERSITY OF NEW JERSEY (2)
5,439,001 Flexible diaphragm tonometer 22 1993
5,605,156 Flexible diaphragm tonometer 8 1995
 
TRUSTEES OF BOSTON UNIVERSITY (2)
6,546,813 Patient monitoring system employing array of force sensors on a bedsheet or similar substrate 15 2001
6,840,117 Patient monitoring system employing array of force sensors on a bedsheet or similar substrate 40 2003
 
ADVANCED BODYMETRICS CORPORATION (1)
5,509,423 Pump band 11 1993
 
AORTIC WRAP PTY LTD. (1)
8,439,844 Step rate optimization device 0 2008
 
DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION OF THE DEPARTMENT OF DEFENCE (1)
6,384,610 Micro-electronic bond degradation sensor and method of manufacture 10 2000
 
FRONTIER MATERIALS, INC. (1)
5,351,686 Disposable extracorporeal conduit for blood constituent monitoring 118 1993
 
GAMBRO DASCO S.P.A. (1)
7,361,267 Dialysis machine blood circulating circuit fitting 2 2002
 
GAMBRO LUNDIA AB (1)
7,074,191 Method and device for non-intrusive measurement of blood pressure in a circuit of a dialysis machine 2 2002
 
HEMA METRICS, LLC (1)
6,687,519 System and method for measuring blood urea nitrogen, blood osmolarity, plasma free hemoglobin and tissue water content 55 2001
 
The Commonwealth of Australia (1)
6,693,417 Micro-electronic bond degradation sensor and method of manufacture 4 2002
 
VITAL WAVE CORPORATION (1)
6,471,655 Method and apparatus for the noninvasive determination of arterial blood pressure 26 1999
 
Other [Check patent profile for assignment information] (1)
5,971,931 Biologic micromonitoring methods and systems 35 1994