US Patent No: 8,113,057

Switched resonant ultrasonic power amplifier system

Stats

Feb 14, 2012
Issued date
Jun 27, 2008
filing date
12/163,341
serial no
In Force
status

ALSO PUBLISHED AS: 20080287791

Importance

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Abstract

A switched resonant power amplifier system for ultrasonic transducers is disclosed. The system includes an amplifier that receives and processes a driver output signal for generating a drive signal that is provided to an ultrasonic device for controlling output of the ultrasonic device. An output control circuit receives and processes a signal related to a feedback signal generated by the ultrasonic device and a divider reference signal, and generates a compensated clock signal that is adjusted for at least one of phase and frequency differences between the received feedback signal and the divider reference signal. A compensated drive circuit receives and processes the compensated clock signal for generating the divider reference signal, and for generating the driver output signal.

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First Claim

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Related Publications

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Patent Owner(s)

Patent Owner	Address	Total Patents
COVIDIEN AG	NEUHAUSEN AM RHEINFALL	587

International Classification(s)

[Classification Symbol]

[Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
McPherson, James W	Boulder, CO	37	432
Orszulak, James H	Nederland, CO	56	1462

Cited Art

Patent Info	# Cites	Year
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7,083,618 Vessel sealer and divider	173	2002
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2006/0025,760 Blood detector for controlling anesu and method therefor	68	2003
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2008/0125,767 Thermocouple Measurement Circuit	49	2003
2004/0143,263 Compressible jaw configuration with bipolar RF output electrodes for soft tissue fusion	160	2003
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2005/0004,564 Method and system for programming and controlling an electrosurgical generator system	174	2004
2007/0093,800 Method and system for programming and controlling an electrosurgical generator system	39	2004
7,491,201 Tissue sealer with non-conductive variable stop members and method of sealing tissue	99	2004
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2008/0039,831 System and method for measuring initial tissue impedance	45	2006
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2008/0082,094 Transformer for RF voltage sensing	37	2006
2007/0038,209 Method and system for controlling output of RF medical generator	44	2006
2007/0173,806 System and method for closed loop monitoring of monopolar electrosurgical apparatus	67	2007
2008/0015,564 Method and system for programming and controlling an electrosurgical generator system	40	2007
2008/0248,685 Connector Systems for Electrosurgical Generator	23	2008
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5,433,739 Method and apparatus for heating an intervertebral disc for relief of back pain	409	1993
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5,571,147 Thermal denervation of an intervertebral disc for relief of back pain	154	1994
5,562,720 Bipolar/monopolar endometrial ablation device and method	396	1994
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5,695,494 Rem output stage topology	96	1994
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5,628,745 Exit spark control for an electrosurgical generator	81	1995
5,720,744 Control system for neurosurgery	262	1995
5,827,271 Energy delivery system for vessel sealing	290	1995
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5,983,141 Method and apparatus for altering neural tissue function	148	1996
6,068,627 Smart recognition apparatus and method	148	1997
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6,246,912 Modulated high frequency tissue modification	192	1999
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6,402,741 Current and status monitor	77	1999
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6,506,189 Cool-tip electrode thermosurgery system	222	2000
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6,755,825 Electrosurgical device having a dielectric seal	54	2001
6,685,701 Smart recognition apparatus and method	96	2002
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BOSTON SCIENTIFIC SCIMED, INC. (34)
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6,237,604 Systems and methods for preventing automatic identification of re-used single use devices	125	1999
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6,494,880 Systems and methods for controlling power in an electrosurgical probe	68	2000
6,579,288 Fluid cooled apparatus for supporting diagnostic and therapeutic elements in contact with tissue	73	2000
6,578,579 Systems and methods for preventing automatic identification of re-used single use devices	108	2001
6,685,703 Generator and probe adapter	42	2001
6,685,700 Method and system for heating solid tissue	87	2001
6,790,206 Compensation for power variation along patient cables	56	2002
7,285,117 Medical device control systems	37	2002
7,357,800 Power supply and control apparatus and electrophysiology systems including the same	30	2003
6,792,390 Systems and methods to identify and disable re-used devices based on detecting environmental changes	50	2003
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6,958,064 Systems and methods for performing simultaneous ablation	35	2003
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GYRUS MEDICAL LIMITED (30)
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6,056,746 Electrosurgical instrument	235	1998
6,261,286 Electrosurgical generator and system	183	1998
6,306,134 Electrosurgical generator and system	213	1998
6,364,877 Electrosurgical generator and system	152	1998
6,228,081 Electrosurgery system and method	197	1999
6,325,799 Electrosurgical instrument	111	1999
6,582,427 Electrosurgery system	99	2000
6,398,781 Electrosurgery system	95	2000
6,547,786 Electrosurgery system and instrument	78	2000
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6,893,435 Electrosurgical system	101	2001
6,843,789 Electrosurgical system	100	2002
6,984,231 Electrosurgical system	103	2002
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6,929,641 Electrosurgical system	72	2003
6,966,907 Electrosurgical generator and system	172	2003
7,220,260 Electrosurgical system	79	2003
7,214,224 Electrosurgical system	61	2003
7,211,081 Electrosurgical generator	63	2003
7,282,048 Electrosurgical generator and system	65	2004
7,344,532 Electrosurgical generator and system	37	2004
7,195,627 Electrosurgical generator	57	2005
7,153,300 Electrosurgical system	60	2005
7,491,199 Electrosurgical generator and system	28	2005
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MEDTRONIC, INC. (27)
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5,674,217 Heart synchronized extractor for an implanted object	76	1993
5,534,018 Automatic lead recognition for implantable medical device	191	1994
5,643,330 Multichannel apparatus for epidural spinal cord stimulation	214	1996
5,702,429 Neural stimulation techniques with feedback	198	1996
5,938,690 Pain management system and method	262	1996
5,925,070 Techniques for adjusting the locus of excitation of electrically excitable tissue	151	1997
6,063,078 Method and apparatus for tissue ablation	130	1997
5,948,007 Dual channel implantation neurostimulation techniques	88	1997
5,814,092 Neural stimulation techniques with feedback	150	1997
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6,663,627 Ablation system and method of use	95	2002
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6,989,010 Ablation system and method of use	49	2003
7,367,972 Ablation system	52	2003
7,169,144 Apparatus and method for creating, maintaining, and controlling a virtual electrode used for the ablation of tissue	78	2003
7,247,155 Apparatus and method for creating, maintaining, and controlling a virtual electrode used for the ablation of tissue	90	2004
7,470,272 Device and method for ablating tissue	30	2004
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5,735,846 Systems and methods for ablating body tissue using predicted maximum tissue temperature	138	1995
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6,053,912 Systems and methods for sensing sub-surface temperatures in body tissue during ablation with actively cooled electrodes	137	1997
6,113,591 Systems and methods for sensing sub-surface temperatures in body tissue	68	1997
6,056,745 Systems and methods for obtaining desired lesion characteristics while ablating body tissue	104	1997
6,293,943 Tissue heating and ablation systems and methods which predict maximum tissue temperature	158	1998
6,014,581 Interface for performing a diagnostic or therapeutic procedure on heart tissue with an electrode structure	127	1998
6,165,169 Systems and methods for identifying the physical, mechanical, and functional attributes of multiple electrode arrays	112	1999
6,245,061 Tissue heating and ablation systems and methods using self-heated electrodes	115	1999
6,652,513 Tissue heating and ablation systems and methods which predict maximum tissue temperature	50	2001
6,786,905 Surgical method and apparatus for positioning a diagnostic or therapeutic element within the body	155	2002
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4,565,200 Universal lesion and recording electrode system	465	1982
4,658,819 Electrosurgical generator	190	1983
4,632,109 Circuitry for processing requests made from the sterile field of a surgical procedure to change the output power level of an electrosurgical generator	63	1984
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4,658,820 Electrosurgical generator with improved circuitry for generating RF drive pulse trains	86	1985
4,907,589 Automatic over-temperature control apparatus for a therapeutic heating device	442	1988
4,966,597 Thermometric cardiac tissue ablation electrode with ultra-sensitive temperature detection	543	1988
6,041,260 Method and apparatus for endometrial ablation	86	1995
6,451,015 Method and system for menu-driven two-dimensional display lesion generator	131	1998
2005/0021,020 System for activating an electrosurgical instrument	48	2004
2007/0093,801 Circuit and method for reducing stored energy in an electrosurgical generator	45	2005
2006/0161,148 Circuit and method for controlling an electrosurgical generator using a full bridge topology	55	2006
2007/0173,802 Method and system for transmitting data across patient isolation barrier	44	2006
2007/0173,813 System and method for tissue sealing	80	2006
2006/0224,152 Method and system for compensating for external impedance of an energy carrying component when controlling an electrosurgical generator	56	2006
2007/0265,612 System and method for reducing leakage current in an electrosurgical generator	42	2006
2007/0282,320 System and method for controlling tissue heating rate prior to cellular vaporization	47	2006
2007/0173,805 Method and system for controlling an output of a radio-frequency medical generator having an impedance based control algorithm	46	2007
2008/0281,315 Electrosurgical Generator With Adaptive Power Control	28	2008
OLYMPUS OPTICAL CO., LTD. (20)
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4,615,330 Noise suppressor for electronic endoscope	90	1984
4,961,435 High-frequency capacitive heating electrode device	119	1988
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5,540,683 High frequency cauterizing apparatus	114	1994
5,678,568 System control apparatus, medical system control apparatus and image-plane display method of medical system control apparatus	99	1994
5,609,560 Medical operation device control system for controlling a operation devices accessed respectively by ID codes	169	1995
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6,039,732 Electric operation apparatus	54	1996
5,931,836 Electrosurgery apparatus and medical apparatus combined with the same	117	1997
6,063,075 Electrosurgical apparatus and separation detecting method capable of stably monitoring separation state of return electrode	77	1998
6,383,183 High frequency treatment apparatus	68	1999
6,306,131 Electric medical apparatus	59	1999
6,436,096 Electrosurgical apparatus with stable coagulation	59	1999
6,464,696 Electrical surgical operating apparatus	57	2000
6,663,623 Electric surgical operation apparatus	56	2000
6,666,860 Electric treatment system	96	2000
6,635,057 Electric operation apparatus	53	2000
6,623,423 Surgical operation system	66	2001
6,511,476 Electrosurgical apparatus with stable coagulation	59	2001
CONMED CORPORATION (16)
5,267,994 Electrosurgical probe	353	1992
5,300,070 Electrosurgical trocar assembly with bi-polar electrode	120	1992
5,432,459 Leakage capacitance compensating current sensor for current supplied to medical device loads with unconnected reference conductor	58	1993
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5,599,348 Electrosurgical trocar assembly	88	1994
5,496,313 System for detecting penetration of medical instruments	62	1994
5,626,575 Power level control apparatus for electrosurgical generators	104	1995
5,830,212 Electrosurgical generator and electrode	93	1996
2004/0097,912 Electrosurgical generator and method with removable front panel having replaceable electrical connection sockets and illuminated receptacles	54	2002
6,830,569 Electrosurgical generator and method for detecting output power delivery malfunction	95	2002
6,875,210 Electrosurgical generator and method for cross-checking mode functionality	70	2002
6,939,347 Electrosurgical generator and method with voltage and frequency regulated high-voltage current mode power supply	64	2002
6,942,660 Electrosurgical generator and method with multiple semi-autonomously executable functions	44	2002
6,948,503 Electrosurgical generator and method for cross-checking output power	57	2002
7,317,954 Virtual control of electrosurgical generator functions	31	2003
7,317,955 Virtual operating room integration	51	2003
ARTHROCARE CORPORATION (13)
5,843,019 Shaped electrodes and methods for electrosurgical cutting and ablation	237	1996
5,766,153 Methods and apparatus for surgical cutting	268	1996
6,228,078 Methods for electrosurgical dermatological treatment	161	1997
6,557,559 Electrosurgical systems and methods with temperature control	70	1998
6,142,992 Power supply for limiting power in electrosurgery	205	1998
6,235,020 Power supply and methods for fluid delivery in electrosurgery	233	1998
6,296,636 Power supply and methods for limiting power in electrosurgery	219	1999
6,632,193 Systems and methods for electrosurgical tissue treatment	180	2000
6,482,201 Systems and methods for tissue resection, ablation and aspiration	124	2000
6,468,270 System and method for electrosurgical treatment of intervertebral discs	81	2000
6,974,453 Dual mode electrosurgical clamping probe and related methods	110	2001
6,837,888 Electrosurgical probe with movable return electrode and methods related thereto	134	2002
2005/0004,634 Methods for electrosurgical treatment of spinal tissue	92	2004
ETHICON ENDO-SURGERY, INC. (12)
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5,693,042 Identification device for surgical instrument	133	1995
5,817,093 Impedance feedback monitor with query electrode for electrosurgical instrument	274	1996
6,338,657 Hand piece connector	62	2000
6,558,376 Method of use of an ultrasonic clamp and coagulation apparatus with tissue support surface	56	2001
6,809,508 Detection circuitry for surgical handpiece system	28	2001
6,656,177 Electrosurgical systems and techniques for sealing tissue	205	2002
7,060,063 Devices and methods for controlling initial movement of an electrosurgical electrode	51	2003
7,118,564 Medical treatment system with energy delivery device for limiting reuse	74	2003
6,977,495 Detection circuitry for surgical handpiece system	152	2004
OLYMPUS CORPORATION (9)
6,730,080 Electric operation apparatus	63	2001
6,740,085 Heating treatment system	62	2001
6,679,875 Medical treatment system	61	2002
6,855,142 Electrosurgical device for treating body tissue with high-frequency power	56	2002
7,063,692 Surgical operation system	51	2003
7,172,591 Electric operation apparatus	45	2003
7,001,381 Electric operation apparatus	102	2003
7,353,068 Control device for a medical system and control method for medical system	50	2004
7,324,357 Power supply apparatus for electric operation	28	2004
ELLMAN INTERNATIONAL, INC. (8)
5,342,356 Electrical coupling unit for electrosurgery	130	1992
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6,238,388 Low-voltage electrosurgical apparatus	75	1999
6,652,514 Intelligent selection system for electrosurgical instrument	173	2001
6,712,813 RF probe for electrosurgical instrument	87	2001
6,994,707 Intelligent selection system for electrosurgical instrument	146	2003
7,094,231 Dual-mode electrosurgical instrument	41	2004
7,479,140 Intelligent selection system for electrosurgical instrument	30	2005
ENGINEERING & RESEARCH ASSOCIATES, INC. (8)
5,697,925 Apparatus and method for thermal ablation	180	1995
5,843,075 Probe for thermal ablation	125	1997
5,868,737 Apparatus and method for determining ablation	112	1997
6,013,074 Apparatus and method for thermal ablation	74	1997
6,039,731 Apparatus and method for determining the extent of ablation	105	1998
6,113,592 Apparatus and method for controlling ablation depth	130	1998
6,322,558 Apparatus and method for predicting ablation depth	76	1999
6,696,844 Apparatus and method for real time determination of materials' electrical properties	46	2001
ERBE ELEKTROMEDIZIN GMBH (8)
4,658,815 High-frequency electrosurgical unit with timed safety shut down interlock	63	1986
4,860,745 High frequency electrosurgical apparatus for thermal coagulation of biologic tissues	107	1987
4,922,210 Feedback-coupled high-frequency power oscillator	72	1989
4,969,885 High frequency surgery device for cutting and/or coagulating biologic tissue	193	1990
5,087,257 Apparatus for monitoring the application of neutral electrodes on a patient undergoing high frequency electro-surgery	93	1990
5,267,997 High-frequency electrosurgery apparatus with limitation of effective value of current flowing through a surgical instrument	303	1992
7,066,933 High-frequency generator for performing high-frequency surgery having adjustable power limitation, and method for controlling the power limitation	53	2001
7,425,835 Method and measurement apparatus for determining the transition impedance between two parts of a subdivided neutral electrode	39	2005
MICROLINE SURGICAL, INC. (8)
5,836,943 Electrosurgical generator	91	1996
6,238,387 Electrosurgical generator	92	1998
6,241,723 Electrosurgical system	104	1999
6,692,489 Electrosurgical mode conversion system	83	2000
6,602,252 Combined dissecting, cauterizing, and stapling device	327	2002
6,695,837 Power supply for identification and control of electrical surgical tools	50	2002
7,033,351 Power supply for identification and control of electrical surgical tools	32	2003
7,175,621 Electrosurgical mode conversion system	48	2003
ANGIODYNAMICS, INC. (7)
5,458,597 Device for treating cancer and non-malignant tumors and methods	329	1993
5,536,267 Multiple electrode ablation apparatus	529	1994
5,599,345 RF treatment apparatus	269	1994
5,810,804 Multiple antenna ablation apparatus and method with cooling element	167	1996
6,663,624 RF treatment apparatus	90	1999
7,422,586 Tissue surface treatment apparatus and method	46	2001
6,962,587 Method for detecting and treating tumors using localized impedance measurement	136	2001
CARDIAC PACEMAKERS, INC. (7)
5,971,980 System for controlling the energy delivered to a patient for ablation	189	1997
6,391,024 RF ablation apparatus and method having electrode/tissue contact assessment scheme and electrocardiogram filtering	138	1999
6,488,678 RF ablation apparatus and method using unipolar and bipolar techniques	92	2001
6,761,716 System and method for assessing electrode-tissue contact and lesion quality during RF ablation by measurement of conduction time	42	2001
6,635,056 RF ablation apparatus and method using amplitude control	52	2001
6,796,980 System and method for validating and troubleshooting ablation system set-up	40	2001
6,730,078 RF ablation apparatus and method using multi-frequency energy delivery	41	2002
WELLS FARGO BANK, NATIONAL ASSOCIATION FLAIR INDUSTRIAL PARK RCBO (7)
4,429,694 Electrosurgical generator	85	1981
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4,437,464 Electrosurgical generator safety apparatus	114	1981
4,559,943 Electrosurgical generator	99	1983
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COVIDIEN LP (6)
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2008/0281,316 Adjustable impedance electrosurgical electrodes	28	2007
2009/0018,536 Measurement and control systems and methods for electrosurgical procedures	37	2007
2009/0024,120 Connection cable and method for activating a voltage-controlled generator	25	2007
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2008/0177,199 System and Method of Using Thermal and Electrical Conductivity of Tissue	28	2008
VALLEYLAB INC. (6)
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YAZAKI CORPORATION (6)
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5,944,553 Flat cable connection structure	33	1997
5,961,344 Cam-actuated terminal connector	61	1997
5,959,253 Wire connection structure	32	1998
6,454,594 Terminal structure of flat circuit body	32	2001
6,422,896 Flat circuit member connector	29	2001
AMERICAN CARDIAC ABLATION CO., INC. (5)
5,341,807 Ablation catheter positioning system	312	1992
5,334,193 Fluid cooled ablation catheter	721	1992
5,342,357 Fluid cooled electrosurgical cauterization system	510	1992
5,383,876 Fluid cooled electrosurgical probe for cutting and cauterizing tissue	535	1994
5,733,281 Ultrasound and impedance feedback system for use with electrosurgical instruments	93	1996
INTEGRA ME GMBH (5)
5,133,711 Electric surgical high-frequency instrument	62	1990
5,976,128 Electrosurgical high frequency generator	110	1997
5,951,545 High-frequency surgical instrument and method of operating the same	66	1997
5,971,981 High frequency surgical apparatus and method of its operation	46	1997
6,074,388 Electrically operated medical apparatus	64	1998
KARL STORZ GMBH & CO. KG (5)
5,749,869 High-frequency surgical generator for cutting tissue	200	1995
5,849,010 Electrosurgical apparatus and method for its operation	35	1995
5,868,739 System for cutting biological tissue	82	1995
5,846,236 High frequency-surgical generator for adjusted cutting and coagulation	75	1996
6,022,347 High-frequency surgical generator for adjusted cutting and coagulation	62	1997
MEDERI THERAPEUTICS, INC. (5)
6,273,886 Integrated tissue heating and cooling apparatus	178	1999
6,464,689 Graphical user interface for monitoring and controlling use of medical devices	95	2000
6,783,523 Unified systems and methods for controlling use and operation of a family of different treatment devices	84	2002
6,733,495 Systems and methods for monitoring and controlling use of medical devices	95	2002
6,994,704 Graphical user interface for monitoring and controlling use of medical devices	65	2002
KARL STORZ ENDOSCOPY-AMERICA, INC. (4)
4,818,954 High-frequency generator with automatic power-control for high-frequency surgery	105	1987
5,108,391 High-frequency generator for tissue cutting and for coagulating in high-frequency surgery	324	1989
5,788,688 Surgeon's command and control	114	1994
6,824,539 Touchscreen controlling medical equipment from multiple manufacturers	76	2002
MEDICAL SCIENTIFIC, INC. (4)
5,207,691 Electrosurgical clip applicator	268	1991
5,201,900 Bipolar surgical clip	125	1992
5,713,896 Impedance feedback electrosurgical system	207	1995
5,817,091 Electrosurgical device having a visible indicator	115	1997
MORVIL TECHNOLOGY LLC (4)
5,383,917 Device and method for multi-phase radio-frequency ablation	588	1991
5,693,078 Device and method for multi-phase radio-frequency ablation	141	1994
5,620,481 Device for multi-phase radio-frequency ablation	132	1995
7,151,964 Device and method for multi-phase radio-frequency ablation	42	2003
ORATEC INTERVENTIONS, INC. (4)
6,162,217 Method and apparatus for controlling a temperature-controlled probe	94	1999
6,544,260 Method for treating tissue in arthroscopic environment using precooling and apparatus for same	66	1999
6,350,262 Method and apparatus for applying thermal energy to tissue asymetrically	93	2000
6,939,346 Method and apparatus for controlling a temperature-controlled probe	76	2002
SOMNUS MEDICAL TECHNOLOGIES, INC. (4)
6,102,907 Apparatus and device for use therein and method for ablation of tissue	37	1997
6,231,569 Dual processor architecture for electro generator	81	1998
6,293,941 Method and apparatus for impedance measurement in a multi-channel electro-surgical generator	79	1998
6,309,386 Linear power control with PSK regulation	60	1998
STORZ ENDOSKOP GMBH (4)
6,261,285 High-frequency surgical device and operation monitoring device for a high-frequency surgical device	54	1998
6,275,786 Device for monitoring a neutral electrode during HF surgery	75	1999
6,864,686 High-frequency surgical device and operation monitoring device for a high-frequency surgical device	69	2002
7,115,121 Electrosurgical apparatus	32	2003
AMS RESEARCH CORPORATION (3)
5,249,585 Urethral inserted applicator for prostate hyperthermia	292	1990
6,216,704 Noninvasive devices, methods, and systems for shrinking of tissues	94	1998
6,522,931 Therapeutic prostatic thermotherapy	32	2001
G2 DESIGN LIMITED (3)
5,099,840 Diathermy unit	301	1989
5,423,810 Cauterising apparatus	345	1993
5,451,224 Apparatus for radio frequency bipolar electrosurgery	365	1993
GENERAL ELECTRIC COMPANY (3)
4,287,557 Inverter with improved regulation	57	1979
4,559,496 LCD Hook-on digital ammeter	57	1984
5,807,253 Patient electrical isolation system	32	1997
INTACT MEDICAL CORPORATION (3)
6,740,079 Electrosurgical generator	109	2001
7,004,174 Electrosurgery with infiltration anesthesia	47	2002
6,923,804 Electrosurgical generator	79	2003
INTEGRA LIFESCIENCES (IRELAND) LTD. (3)
4,931,047 Method and apparatus for providing enhanced tissue fragmentation and/or hemostasis	467	1987
5,015,227 Apparatus for providing enhanced tissue fragmentation and/or hemostasis	225	1990
5,190,517 Electrosurgical and ultrasonic surgical system	410	1991
KABUSHIKI KAISHA TOSHIBA (3)
5,290,283 Power supply apparatus for electrosurgical unit including electrosurgical-current waveform data storage	50	1991
5,409,485 Power supply apparatus for electrosurgical unit including electrosurgical-current waveform data storage	75	1993
7,364,972 Semiconductor device	28	2006
KIMBERLY-CLARK INC. (3)
7,258,688 Computerized electrical signal generator	43	2002
7,163,536 Determining connections of multiple energy sources and energy delivery devices	33	2004
7,294,127 Electrosurgical tissue treatment method	73	2005
LIVE TISSUE CONNECT, INC. (3)
6,733,498 System and method for control of tissue welding	233	2002
7,025,764 Bonding of soft biological tissues by passing high frequency electric current therethrough	36	2002
2004/0068,304 Bonding of soft biological tissues by passing high freouency electric current therethrough	61	2003
LOCKHEED MARTIN CORPORATION (3)
5,075,839 Inductor shunt, output voltage regulation system for a power supply	34	1990
5,119,284 Efficient power supply post regulation	44	1991
5,414,238 Resonant power supply for an arcjet thruster	68	1992
S.D.M.H. PTY. LTD. (3)
7,008,421 Apparatus and method for tissue resection	62	2003
7,223,264 Thermal coagulation of tissue during tissue resection	95	2004
7,341,586 Thermal coagulation of tissue during tissue resection	41	2004
SIEMENS AKTIENGESELLSCHAFT (3)
4,862,889 Monitoring circuit for an RF surgical apparatus	111	1989
5,067,953 Circuit for controlling an electro-therapy device	42	1990
5,196,008 Method and circuit for monitoring electrode surfaces at the body tissue of a patient in an HF surgery device	79	1990
STORZ ENDOSKOP PRODUKTIONS GMBH (3)
7,203,556 Device for monitoring medical equipment	32	2004
7,238,181 High-frequency surgery generator	29	2004
7,244,255 High-frequency surgical generator	28	2004
STORZ INSTRUMENT COMPANY (3)
5,249,121 Remote control console for surgical control system	150	1989
5,157,603 Control system for ophthalmic surgical instruments	90	1989
5,964,746 Microsurgical system having isolated handpiece detection apparatus	31	1997
3M INNOVATIVE PROPERTIES COMPANY (2)
6,007,532 Method and apparatus for detecting loss of contact of biomedical electrodes with patient skin	59	1997
6,171,304 Method and apparatus for controlling contact of biomedical electrodes with patient skin	80	1999
ALOKA CO., LTD. (2)
5,234,427 Electrosurgical unit	34	1990
5,167,659 Blood coagulating apparatus	219	1991
ASPEN LABORATORIES, INC. (2)
4,569,345 High output electrosurgical unit	64	1984
4,848,335 Return electrode contact monitor	96	1988
BOARD OF REGENTS OF THE UNIVERSITY OF NEBRASKA (2)
5,868,740 Method for volumetric tissue ablation	240	1995
6,468,273 Methods for volumetric tissue ablation	40	2000
BOSTON SCIENTIFIC CORPORATION (2)
5,588,432 Catheters for imaging, sensing electrical potentials, and ablating tissue	549	1995
6,088,614 Tissue characterization to identify an ablation site	60	1997
CANON KABUSHIKI KAISHA (2)
2003/0137,680 IMAGE PROCESSING APPARATUS, METHOD OF CONTROLLING SAME, AND IMAGE PROCESSING SYSTEM		1998
2003/0137,680 IMAGE PROCESSING APPARATUS, METHOD OF CONTROLLING SAME, AND IMAGE PROCESSING SYSTEM		1998
CORDIS WEBSTER, INC. (2)
5,462,521 Fluid cooled and perfused tip for a catheter	362	1993
6,017,338 Fluid cooled and perfused tip for a catheter	105	1995
CORNING GLASS WORKS (2)
4,232,676 Surgical cutting instrument	303	1978
4,314,559 Nonstick conductive coating	140	1979
CYTYC SURGICAL PRODUCTS (2)
6,508,815 Radio-frequency generator for powering an ablation device	173	1999
7,074,217 Radio-frequency generator for powering an ablation device	57	2002
DELPHI TECHNOLOGIES, INC. (2)
6,232,556 Flat wire to round wire connection system	36	2000
2005/0109,111 Sensor and method of transmitting sensor data	29	2003
DIPOLAR LIMITED (2)
6,010,499 Electrosurgical cutting and coagulation apparatus	81	1997
6,186,147 Method for electrosurgical tissue cutting and coagulation	35	1999
E.P. TECHNOLOGIES INC. (2)
5,722,975 Systems for radiofrequency ablation with phase sensitive power detection and control	105	1995
5,853,409 Systems and apparatus for sensing temperature in body tissue	85	1997
ERICSSON RAYNET (2)
5,694,304 High efficiency resonant switching converters	68	1995
5,712,772 Controller for high efficiency resonant switching converters	94	1995
HEMOSTATIC SURGERY CORPORATION (2)
5,472,443 Electrosurgical apparatus employing constant voltage and methods of use	326	1994
5,445,635 Regulated-current power supply and methods for resistively-heated surgical instruments	75	1994
INFINEON TECHNOLOGIES AG (2)
5,448,466 Method for limiting the frequency of a voltage-controlled oscillator in a control circuit of a resonant converter switched-mode power supply, and control circuit for a resonant converter switched-mode power supply	14	1994
6,222,356 Current mode switching regulator configured such that a measuring resistor is not needed to measure the current at an inductor	67	1999
IRVINE BIOMEDICAL, INC. (2)
5,954,719 System for operating a RF ablation generator	103	1998
6,113,593 Ablation apparatus having temperature and force sensing capabilities	94	1999
IXYS CORPORATION (2)
5,500,616 Overvoltage clamp and desaturation detection circuit	65	1995
5,596,466 Intelligent, isolated half-bridge power module	94	1995
KIRWAN SURGICAL PRODUCTS LLC (2)
5,196,009 Non-sticking electrosurgical device having nickel tips	185	1991
7,402,754 Integral electrically conducting cord and lumen	29	2003
MEDICAL PLASTICS, INC. (2)
4,303,073 Electrosurgery safety monitor	112	1980
4,494,541 Electrosurgery safety monitor	116	1981
MEDTRONIC CARDIORHYTHM (2)
5,540,681 Method and system for radiofrequency ablation of tissue	245	1994
5,584,830 Method and system for radiofrequency ablation of cardiac tissue	133	1994
MEDTRONIC VIDAMED, INC. (2)
6,730,079 Method for calculating impedance and apparatus utilizing same	44	2002
6,855,141 Method for monitoring impedance to control power and apparatus utilizing same	61	2002
MEGADYNE MEDICAL PRODUCTS, INC. (2)
6,053,910 Capacitive reusable electrosurgical return electrode	98	1996
6,066,137 Electric field concentrated electrosurgical electrode	81	1997
MINNESOTA MINING AND MANUFACTURING COMPANY (2)
5,797,902 Biomedical electrode providing early detection of accidental detachment	76	1996
5,664,953 Elastomeric locking taper connector with randomly placeable intermeshing member	35	1996
NELLCOR PURITAN BENNETT INCORPORATED (2)
5,660,567 Medical sensor connector with removable encoding device	236	1995
6,044,283 Medical sensor with modulated encoding scheme	170	1998
RICHARD WOLF GMBH (2)
4,995,877 Device with a rotationally-driven surgical instrument	172	1989
5,324,283 Medical instrument having a switch for controlling an external device	79	1992
SENORX, INC. (2)
6,620,157 High frequency power source	100	2000
7,175,618 High frequency power source	41	2003
SILICON LABORATORIES INC. (2)
7,058,372 Method and apparatus for automatic tuning of a resonant loop antenna	7	2002
7,190,933 Method and apparatus for automatic tuning of a resonant loop antenna in a transceiver circuit	6	2004
SMITHS GROUP PLC (2)
4,961,047 Electrical power control apparatus and methods	80	1989
5,480,399 Electrosurgery monitor and apparatus	79	1994
STRYKER CORPORATION (2)
7,422,582 Control console to which powered surgical handpieces are connected, the console configured to simultaneously energize more than one and less than all of the handpieces	35	2004
7,217,269 Electrosurgical control system	57	2004
SYNERON MEDICAL LTD. (2)
5,569,242 Method and apparatus for controlled contraction of soft tissue	510	1995
6,939,344 Method for controlling skin temperature during thermal treatment	57	2001
TELEA ELECTRONIC ENGINEERING S.R.L. (2)
6,458,122 Radiofrequency electrosurgical generator with current control	47	2000
7,300,437 Electronic scalpel to cut organic tissues	29	2004
TYCO HEALTHCARE GROUP LP (2)
2007/0173,804 System and method for tissue sealing	49	2007
2009/0082,765 REAL-TIME ARC CONTROL IN ELECTROSURGICAL GENERATORS	29	2007
UNITED STATES SURGICAL CORPORATION (2)
5,483,952 Handle for surgical instruments	91	1994
6,402,742 Controller for thermal treatment of tissue	91	2000
UNIVERSITY OF WASHINGTON (2)
4,582,057 Fast pulse thermal cautery probe	152	1983
4,691,703 Thermal cautery system	106	1986
VIDAMED, INC. (2)
5,865,788 Self-contained power sypply and monitoring station for RF tissue ablation	61	1996
5,871,481 Tissue ablation apparatus and method	117	1997
ZOLL CIRCULATION, INC. (2)
6,620,189 Method and system for control of a patient's body temperature by way of a transluminally insertable heat exchange catheter	59	2000
6,602,243 Foley catheter having redundant temperature sensors and method	59	2001
ABIOMED, INC. (1)
7,062,331 Methods and apparatus for providing a sufficiently stable power to a load in an energy transfer system	46	2002
ADVANCED ENERGY INDUSTRIES, INC. (1)
7,305,311 Arc detection and handling in radio frequency power applications	42	2005
ADVANCED MICRO DEVICES, INC. (1)
6,424,186 Circuit for dynamic signal drive strength compensation	5	2001
AESCULAP AG (1)
6,123,701 Methods and systems for organ resection	164	1998
AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH (1)
5,831,166 Method of non-contact micromanipulation using ultrasound	57	1996
AGILITY CAPITAL LLC (1)
6,936,047 Multi-channel RF energy delivery with coagulum reduction	57	2001
ALFRED E. MANN FOUNDATION FOR SCIENTIFIC RESEARCH (1)
5,531,774 Multichannel implantable cochlear stimulator having programmable bipolar, monopolar or multipolar electrode configurations	100	1994
ALTON DEAN MEDICAL A CORP. OF UTAH (1)
5,254,117 Multi-functional endoscopic probe apparatus	148	1992
AN-CON GENETICS, INC. (1)
5,167,658 Method and apparatus for electrosurgical measurement	119	1991
ARQOS SURGICAL, INC. (1)
6,413,256 Voltage threshold ablation method and apparatus	36	2000
ASEA BROWN BOVERI AG (1)
4,942,313 Method for detecting a current flowing over the human body between a forward and a return conductor and a circuit configuration for carrying out the method	77	1988
ASTEC INTERNATIONAL LIMITED (1)
4,887,199 Start circuit for generation of pulse width modulated switching pulses for switch mode power supplies	93	1987
ATRICURE, INC. (1)
6,113,596 Combination monopolar-bipolar electrosurgical instrument system, instrument and cable	269	1997
AVAGO TECHNOLOGIES GENERAL IP PTE. LTD. (1)
7,525,398 Acoustically communicating data signals across an electrical isolation barrier	32	2005
BAUSCH & LOMB SURGICAL, INC. (1)
6,055,458 Modes/surgical functions	65	1997
BAYLIS MEDICAL COMPANY INC. (1)
6,565,562 Method for the radio frequency perforation and the enlargement of a body tissue	41	2001
BELL TELEPHONE LABORATORIES, INCORPORATED (1)
4,586,120 Current limit shutdown circuit with time delay	57	1983
BIOSENSE, INC. (1)
6,546,270 Multi-electrode catheter, system and method	105	2000
BIRTCHER CORPORATION, THE A CORP. OF CALIFORNIA (1)
4,492,832 Hand-controllable switching device for electrosurgical instruments	89	1982
BIRTCHER MEDICAL SYSTEMS, INC. (1)
RE34432 Power control technique for beam-type electrosurgical unit	71	1992
BOSTON SCIENTIFIC LIMITED (1)
6,371,963 Device for controlled endoscopic penetration of injection needle	46	1998
BRAUN AKTIENGESELLSCHAFT (1)
4,376,263 Battery charging circuit	100	1981
BROWN, RUSSELL A., TRUSTEE OF THE RUSSELL A. FAMILY LIVING TRUST (1)
4,608,977 System using computed tomography as for selective body treatment	282	1982
BURR-BROWN CORPORATION (1)
5,304,917 Compact low noise low power dual mode battery charging circuit	49	1993
CARDIAC PATHWAYS CORPORATION (1)
5,820,568 Apparatus and method for aiding in the positioning of a catheter	101	1996
CARDIOFOCUS, INC. (1)
5,540,677 Endoscopic systems for photoreactive suturing of biological materials	144	1994
CARDIORHYTHM A CA CORPORATION (1)
5,573,533 Method and system for radiofrequency ablation of cardiac tissue	225	1992
CARL ZEISS SURGICAL GMBH (1)
5,422,926 X-ray source with shaped radiation pattern	122	1994
CELON AG MEDICAL INSTRUMENTS (1)
6,818,000 Electrode arrangement for electrothermal treatment of human or animal bodies	146	2002
CENTRAL BANK & TRUST COMPANY, A KY BANKING CORP. (1)
4,397,314 Method and apparatus for controlling and optimizing the heating pattern for a hyperthermia system	266	1981
CEPHEID (1)
6,819,027 Method and apparatus for controlling ultrasonic transducer	36	2002
CHASE MANHATTAN BANK, THE (1)
5,766,165 Return path monitoring system	83	1995
CHEMICAL BANK, AS COLLATERAL AGENT (1)
4,296,413 Resistance-bridge to frequency converter with automatic offset correction	41	1979
CIMARRON INSTRUMENTS, INC. (1)
4,334,539 Electrosurgical generator control apparatus	100	1980
CONSORTIUM MANAGEMENT SERVICES GROUP, INC. (1)
6,562,037 Bonding of soft biological tissues by passing high frequency electric current therethrough	233	1998
CONWAY STUART MEDICAL, INC. (1)
6,358,245 Graphical user interface for association with an electrode structure deployed in contact with a tissue region	142	1999
COOPER INDUSTRIES, INC. (1)
4,630,218 Current measuring apparatus	77	1985
CORDIS CORPORATION (1)
4,735,204 System for controlling an implanted neural stimulator	97	1986
CURON MEDICAL, INC. (1)
2004/0172,016 Systems and methods for monitoring and controlling use of medical devices	86	2004
CYTYC CORPORATION (1)
7,407,502 Radio-frequency generator for powering an ablation device	33	2005
DATEX-OHMEDA, INC. (1)
6,560,470 Electrical lockout photoplethysmographic measurement system	123	2000
DELL PRODUCTS L.P. (1)
6,693,782 Surge suppression for current limiting circuits	43	2000
DELTA ELECTRONICS, INC. (1)
2006/0291,178 High frequency circuit module	31	2006
DENTSPLY RESEARCH & DEVELOPMENT CORP. (1)
4,200,105 Electrosurgical safety circuit	84	1978
DIAPULSE CORPORATION OF AMERICA (1)
6,458,121 Apparatus for athermapeutic medical treatments	81	1996
DISTRIBUTION CONTROL SYSTEMS, INC. (1)
5,696,441 Linear alternating current interface for electronic meters	80	1994
DRG (UK) LIMITED (1)
4,384,582 Patient plate for diathermy apparatus, and diathermy apparatus fitted with it	89	1980
ELEKTA AB (PUBL) (1)
6,629,973 Method and an apparatus for controlled destruction of tissue	44	2001
ENCISION, INC. (1)
7,465,302 System and method for performing an electrosurgical procedure	34	2005
ENDOPHOTONIX, INC. (1)
7,232,437 Assessment of lesion transmurality	35	2005
ENERGY, UNITED STATES DEPARTMENT OF (1)
4,339,049 Containers for use in a self supporting assembly	96	1980
ESC MEDICAL SYSTEMS LTD. (1)
5,556,396 Method for tubal electroligation	231	1995
ESTATE OF LEONARD I MALIS DECEASED (1)
5,318,563 Bipolar RF generator	217	1992
ETHICON, INC. (1)
5,403,312 Electrosurgical hemostatic device	736	1993
FINDLEY FOREST LIMITED LLC (1)
6,243,654 Transducer assembly with smart connector	74	1998
FIRMA J. EBERSPACHER, A CORP. OF THE FED. REP. OF GERMANY (1)
5,113,116 Circuit arrangement for accurately and effectively driving an ultrasonic transducer	28	1989
FISHER & PAYKEL HEALTHCARE LIMITED (1)
5,452,725 Cable termination status detection	52	1993
FLUGSTAD, BENJAMIN A. (1)
6,784,405 Variable frequency automated capacitive radio frequency (RF) dielectric heating system	45	2003
FREESCALE SEMICONDUCTOR, INC. (1)
4,931,717 Load response control and method	63	1989
GARITO, JON C. (1)
4,463,759 Universal finger/foot switch adaptor for tube-type electrosurgical instrument	105	1982
GYRUS ENT L.L.C. (1)
7,131,445 Electrosurgical method and apparatus	61	2003
GYRUS MEDICAL LIMITED CHARTERHOUSE (1)
5,438,302 Electrosurgical radiofrequency generator having regulated voltage across switching device	379	1994
HAIR FREE CENTERS, INC. (1)
4,372,315 Impedance sensing epilator	70	1980
HEMOSTATIC SURGERY CORPORATION, A CAYMAN ISLANDS COMPANY (1)
5,496,314 Irrigation and shroud arrangement for electrically powered endoscopic probes	202	1992
HEMOSTATIX CORPORATION (1)
5,400,267 Local in-device memory feature for electrically powered medical equipment	312	1992
HENRY, MCCORD, BEAN & MILLER, P.L.L.C. (1)
5,792,138 Cordless bipolar electrocautery unit with automatic power control	109	1996
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (1)
5,729,448 Low cost highly manufacturable DC-to-DC power converter	79	1996
HON HAI PRECISION INDUSTRY CO., LTD. (1)
6,746,284 Electrical connector assembly having signal and power terminals	42	2003
HUBBELL INCORPORATED (1)
5,346,406 Electrical cable and connector assembly with safety pilot line disconnect, especially for electric vehicle	56	1993
HUETTINGER MEDIZINTECHNIK GMBH & CO. KG (1)
6,245,063 Apparatus for decreasing or eliminating current leakages in electro medical equipment	33	1998
HUGHES ELECTRONICS CORPORATION (1)
4,992,719 Stable high voltage pulse power supply	42	1989
I.C. MEDICAL, INC. (1)
5,836,909 Automatic fluid control system for use in open and laparoscopic laser surgery and electrosurgery and method therefor	93	1996
INNERCOOL THERAPIES, INC., A DELAWARE CORPORATION (1)
6,974,463 System and method for patient temperature control employing temperature projection algorithm	42	2002
INTEGRA BURLINGTON MA, INC. (1)
5,230,623 Operating pointer with interactive computergraphics	466	1991
INTUITIVE SURGICAL OPERATIONS, INC. (1)
5,891,142 Electrosurgical forceps	258	1997
J. EBERSPAECHER GMBH & CO. KG (1)
5,216,338 Circuit arrangement for accurately and effectively driving an ultrasonic transducer	23	1991
J. MORITA MANUFACTURING CORPORATION (1)
6,899,538 Identification type instrument assembly, identification type adapter, identification type tube, and medical apparatus using them	57	2001
JDS UNIPHASE CORPORATION (1)
4,959,606 Current mode switching regulator with programmed offtime	71	1989
JOHNSON & JOHNSON PROFESSIONAL, INC. (1)
4,520,818 High dielectric output circuit for electrosurgical power source	66	1983
KAI DESINGER (1)
6,524,308 Electrode arrangement for electrothermal treatment of human or animal bodies	59	2000
KAMIYAMA, HIROYASU (1)
5,151,102 Blood vessel coagulation/stanching device	365	1990
LAZURE SCIENTIFIC, INC. (1)
5,908,444 Complex frequency pulsed electromagnetic generator and method of use	74	1997
LEAR AUTOMOTIVE DEARBORN, INC. (1)
5,860,832 Method for connecting flat flexible cable and a connector	36	1997
LEE, KYU-HO (1)
6,558,377 Embolic material detachment detection system and method and assembly for embolic treatments	30	2001
LEIBINGER GMBH (1)
4,474,179 Method and apparatus for the high frequency coagulation of protein for surgical purposes	170	1982
LIGHTWAVE ABLATIOIN SYSTEMS (1)
5,500,012 Ablation catheter system	587	1994
LINEAR TECHNOLOGY CORPORATION (1)
6,498,466 Cancellation of slope compensation effect on current limit	80	2000
LINVATEC CORPORATION (1)
4,739,759 Microprocessor controlled electrosurgical generator	146	1985
LUMENIS INC. (1)
5,681,307 Fiber-optic plug and receptacle providing automatic appliance recognition	40	1994
MACAN ENGINEERING & MANUFACTURING COMPANY, INC. (1)
4,191,188 Variable crest factor high frequency generator apparatus	67	1978
MAQUET CARDIOVASCULAR LLC (1)
7,192,427 Apparatus and method for assessing transmurality of a tissue ablation	34	2003
MASSACHUSETTS INSTITUTE OF TECHNOLOGY (1)
4,788,634 Resonant forward converter	104	1987
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
7,250,746 Current mode switching regulator with predetermined on time	47	2005
MDT CORPORATION (1)
4,938,761 Bipolar electrosurgical forceps	271	1990
MEDICAL RESEARCH ASSOCIATES, LTD., #2 (1)
4,378,801 Electrosurgical generator	77	1980
MEDTRONIC CRYOCATH LP (1)
5,281,213 Catheter for ice mapping and ablation	470	1992
MEGAPULSE, INC. (1)
4,767,999 Method of and apparatus for radio-frequency generation in resonator tank circuits excited by sequential pulses of alternately opposite polarity	35	1986
MEHL; THOMAS L. (1)
4,566,454 Selected frequency hair removal device and method	61	1981
NEUROTHERM, INC. (1)
7,226,447 Electrosurgical generator	44	2004
NOVOCURE LIMITED (1)
7,146,210 Apparatus and method for optimizing tumor treatment efficiency by electric fields	44	2003
NTERO SURGICAL, INC. (1)
6,645,198 Systems and methods for reducing post-surgical complications	55	2000
OERTLI-INSTRUMENTE AG (1)
5,346,491 Feed device for bipolar electrodes for capsulotomy	60	1991
OMEGA ENGINEERING, INC. (1)
6,074,089 Thermoelectric product and method	52	1998
OMRON TATEISI ELECTRONICS CO. (1)
4,993,430 Electrode device for high frequency thermotherapy apparatus	106	1989
ONESYS OY (1)
5,413,573 Device for surgical procedures	132	1994
PACESETTER AB (1)
4,805,621 Apparatus for measuring impedance of body tissue	109	1987
PACKAGING SERVICE CORPORATION OF KENTUCKY, A CORP. OF KY (1)
4,590,934 Bipolar cutter/coagulator	338	1983
PERFECT SURGICAL TECHNIQUES, INC. (1)
6,682,527 Method and system for heating tissue with a bipolar instrument	184	2001
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Patent Citation Ranking

Forward Cites

Patent Info	(Count)	# Cites	Year
ORTHOSENSOR (1)
8,337,428 Zero-crossing receiver for orthopedic parameter sensing		0	2010

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