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 RHEINFALL681

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Denham, Amy Boulder, US 7 765
Odom, Darren Longmont, US 21 2592
Weinberg, Craig Denver, US 27 2765

Cited Art Landscape

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7303557 Vessel sealing system 305 2004
2005/0203,504 Method and system for controlling output of RF medical generator 254 2005
2005/0182,398 Method and system for continuity testing of medical electrodes 64 2005
2005/0197,659 Vessel sealing system using capacitive RF dielectric heating 199 2005
2006/0079,871 Universal foot switch contact port 57 2005
2007/0093,801 Circuit and method for reducing stored energy in an electrosurgical generator 72 2005
2007/0135,812 Laparoscopic apparatus for performing electrosurgical procedures 58 2005
2006/0161,148 Circuit and method for controlling an electrosurgical generator using a full bridge topology 106 2006
2007/0173,810 Dual synchro-resonant electrosurgical apparatus with bi-directional magnetic coupling 54 2006
2006/0178,664 Circuit for controlling arc energy from an electrosurgical generator 58 2006
2007/0208,339 System and method for controlling electrosurgical snares 73 2006
2007/0225,698 System and method for generating radio frequency energy 51 2006
2006/0224,152 Method and system for compensating for external impedance of an energy carrying component when controlling an electrosurgical generator 95 2006
2007/0250,052 Arc based adaptive control system for an electrosurgical unit 50 2006
2007/0265,612 System and method for reducing leakage current in an electrosurgical generator 63 2006
2008/0039,831 System and method for measuring initial tissue impedance 91 2006
2008/0039,836 System and method for controlling RF output during tissue sealing 151 2006
2008/0082,094 Transformer for RF voltage sensing 53 2006
2007/0038,209 Method and system for controlling output of RF medical generator 66 2006
2007/0173,805 Method and system for controlling an output of a radio-frequency medical generator having an impedance based control algorithm 136 2007
2007/0173,806 System and method for closed loop monitoring of monopolar electrosurgical apparatus 256 2007
2008/0015,564 Method and system for programming and controlling an electrosurgical generator system 71 2007
 
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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 7 2011
 
Coviden IP (1)
D680220 Slider handle for laparoscopic device 12 2012
 
COVIDIEN AG (14)
8267928 System and method for closed loop monitoring of monopolar electrosurgical apparatus 0 2011
8241278 Laparoscopic apparatus for performing electrosurgical procedures 3 2011
8267929 Method and system for programming and controlling an electrosurgical generator system 14 2011
8647340 Thermocouple measurement system 0 2012
8485993 Switched resonant ultrasonic power amplifier system 1 2012
9168089 Method and system for controlling output of RF medical generator 0 2012
9113900 Method and system for controlling output of RF medical generator 0 2012
8475447 System and method for closed loop monitoring of monopolar electrosurgical apparatus 0 2012
8597296 Bipolar forceps having monopolar extension 1 2012
8591506 Vessel sealing system 63 2012
8966981 Switched resonant ultrasonic power amplifier system 0 2013
9463067 Vessel sealing system 0 2013
9375270 Vessel sealing system 0 2013
9375271 Vessel sealing system 0 2013
 
COVIDIEN LP (13)
* 8215182 Apparatus and method for measuring pressure between jaw members 19 2008
* 2011/0036,183 APPARATUS AND METHOD FOR MEASURING PRESSURE BETWEEN JAW MEMBERS 21 2008
9033973 System and method for DC tissue impedance sensing 0 2011
8898888 System for manufacturing electrosurgical seal plates 6 2012
9113940 Trigger lockout and kickback mechanism for surgical instruments 5 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 14 2012
8523898 Endoscopic electrosurgical jaws with offset knife 15 2012
8486061 Imaginary impedance process monitoring and intelligent shut-off 0 2012
8858554 Apparatus, system, and method for performing an electrosurgical procedure 2 2013
9345535 Apparatus, system and method for performing an electrosurgical procedure 0 2014
9265552 Method of manufacturing electrosurgical seal plates 0 2014
* Cited By Examiner

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