System and method for measuring initial tissue impedance

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8034049
APP PUB NO 20080039831A1
SERIAL NO

11500687

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An electrosurgical system and method are disclosed. The system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The generator is further adapted to supply an electrical signal having at least one substantially constant value to tissue to determine initial tissue impedance response. The generator includes sensor circuitry adapted to continuously monitor initial tissue impedance response, wherein the initial tissue impedance response includes one of an initial impedance, an impedance drop, an impedance minimum and a first impedance rise. The generator also includes a microprocessor adapted to generate at least one tissue parameter based as a function of the initial impedance, the impedance drop, the impedance minimum and the first impedance rise. The system also includes an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue for treatment.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
COVIDIEN AGNEUHAUSEN AM RHEINFALL688

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Denham, Amy Boulder, US 7 834
Odom, Darren Longmont, US 21 3028
Weinberg, Craig Denver, US 27 3069

Cited Art Landscape

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7160293 Multiple RF return pad contact detection system 103 2004
7396336 Switched resonant ultrasonic power amplifier system 226 2004
7303557 Vessel sealing system 341 2004
2005/0203,504 Method and system for controlling output of RF medical generator 263 2005
2005/0182,398 Method and system for continuity testing of medical electrodes 67 2005
2005/0197,659 Vessel sealing system using capacitive RF dielectric heating 204 2005
2006/0079,871 Universal foot switch contact port 59 2005
2007/0093,801 Circuit and method for reducing stored energy in an electrosurgical generator 76 2005
2007/0135,812 Laparoscopic apparatus for performing electrosurgical procedures 63 2005
2006/0161,148 Circuit and method for controlling an electrosurgical generator using a full bridge topology 114 2006
2007/0173,810 Dual synchro-resonant electrosurgical apparatus with bi-directional magnetic coupling 57 2006
2006/0178,664 Circuit for controlling arc energy from an electrosurgical generator 60 2006
2007/0208,339 System and method for controlling electrosurgical snares 77 2006
2007/0225,698 System and method for generating radio frequency energy 54 2006
2006/0224,152 Method and system for compensating for external impedance of an energy carrying component when controlling an electrosurgical generator 100 2006
2007/0250,052 Arc based adaptive control system for an electrosurgical unit 52 2006
2007/0265,612 System and method for reducing leakage current in an electrosurgical generator 67 2006
2008/0039,831 System and method for measuring initial tissue impedance 96 2006
2008/0039,836 System and method for controlling RF output during tissue sealing 160 2006
2008/0082,094 Transformer for RF voltage sensing 56 2006
2007/0038,209 Method and system for controlling output of RF medical generator 69 2006
2007/0173,805 Method and system for controlling an output of a radio-frequency medical generator having an impedance based control algorithm 150 2007
2007/0173,806 System and method for closed loop monitoring of monopolar electrosurgical apparatus 322 2007
2008/0015,564 Method and system for programming and controlling an electrosurgical generator system 73 2007
 
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AUSLO RESEARCH LLC (1)
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INTEGRA ME GMBH (4)
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5702429 Neural stimulation techniques with feedback 335 1996
5938690 Pain management system and method 505 1996
5925070 Techniques for adjusting the locus of excitation of electrically excitable tissue 225 1997
6063078 Method and apparatus for tissue ablation 270 1997
5948007 Dual channel implantation neurostimulation techniques 164 1997
5814092 Neural stimulation techniques with feedback 241 1997
5836990 Method and apparatus for determining electrode/tissue contact 308 1997
5913882 Neural stimulation techniques with feedback 269 1998
6648883 Ablation system and method of use 260 2002
6849073 Apparatus and method for creating, maintaining, and controlling a virtual electrode used for the ablation of tissue 441 2002
6989010 Ablation system and method of use 210 2003
7367972 Ablation system 143 2003
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MICROLINE SURGICAL, INC. (4)
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* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
TYCO HEALTHCARE GROUP LP (1)
* 2012/0022,521 System And Method For Measuring Initial Tissue Impedance 10 2011
 
Coviden IP (1)
D680220 Slider handle for laparoscopic device 16 2012
 
COVIDIEN AG (15)
8267928 System and method for closed loop monitoring of monopolar electrosurgical apparatus 2 2011
8241278 Laparoscopic apparatus for performing electrosurgical procedures 6 2011
8267929 Method and system for programming and controlling an electrosurgical generator system 17 2011
8647340 Thermocouple measurement system 0 2012
8485993 Switched resonant ultrasonic power amplifier system 6 2012
9168089 Method and system for controlling output of RF medical generator 1 2012
9113900 Method and system for controlling output of RF medical generator 1 2012
8475447 System and method for closed loop monitoring of monopolar electrosurgical apparatus 2 2012
8597296 Bipolar forceps having monopolar extension 1 2012
8591506 Vessel sealing system 90 2012
8966981 Switched resonant ultrasonic power amplifier system 1 2013
9463067 Vessel sealing system 0 2013
9375270 Vessel sealing system 0 2013
9375271 Vessel sealing system 0 2013
9768373 Switched resonant ultrasonic power amplifier system 0 2015
 
COVIDIEN LP (16)
* 8215182 Apparatus and method for measuring pressure between jaw members 20 2008
* 2011/0036,183 APPARATUS AND METHOD FOR MEASURING PRESSURE BETWEEN JAW MEMBERS 24 2008
9033973 System and method for DC tissue impedance sensing 1 2011
8898888 System for manufacturing electrosurgical seal plates 10 2012
9113940 Trigger lockout and kickback mechanism for surgical instruments 21 2012
8568444 Method of transferring rotational motion in an articulating surgical instrument 4 2012
9028493 In vivo attachable and detachable end effector assembly and laparoscopic surgical instrument and methods therefor 0 2012
8454602 Apparatus, system, and method for performing an electrosurgical procedure 17 2012
8523898 Endoscopic electrosurgical jaws with offset knife 20 2012
8486061 Imaginary impedance process monitoring and intelligent shut-off 2 2012
8858554 Apparatus, system, and method for performing an electrosurgical procedure 3 2013
9655670 Systems and methods for measuring tissue impedance through an electrosurgical cable 0 2014
9636165 Systems and methods for measuring tissue impedance through an electrosurgical cable 0 2014
9345535 Apparatus, system and method for performing an electrosurgical procedure 0 2014
9265552 Method of manufacturing electrosurgical seal plates 1 2014
9750561 System for manufacturing electrosurgical seal plates 0 2016
* Cited By Examiner

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