US Patent No: 5,047,026

Number of patents in Portfolio can not be more than 2000

Electrosurgical implement for tunneling through tissue

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Abstract

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An electrosurgical implement for tunneling through tissue for effecting drainage of an organ or to restore patency to a blood vessel is described. The implement comprises a stainless steel, helically wound, wire body similar to a conventional guidewire of the type used in angiography, angioplasty or in implanting cardiac pacing leads. The exterior of the guidewire is coated with an insulating material, save for one or two convolutions at its distal end. A core wire having a Teflon.RTM. shrink tube surrounding it over substantially its entire length is disposed within the lumen of the helical guidewire and only a short segment of the distal end of the core wire is allowed to extend out from the distal end of the guidewire. This short segment is stripped free of insulation. The implement may be routed through an endoscope into the stomach or colon and when an RF voltage of an appropriate amplitude is connected across terminals electrically joined to the proximal ends of both of the guidewire and the core wire, an arc discharge is created when the distal end of the implement is brought into contact with tissue, thereby allowing the device to readily pierce this tissue. The same implement may also be used for restoring patency to a blocked blood vessel.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
GYRUS MEDICAL, INC.MAPLE GROVE, MN37

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Rydell, Mark A Golden Valley, MN 102 13555

Cited Art Landscape

Patent Info (Count) # Cites Year
 
EVEREST MEDICAL CORPORATION (2)
4,802,476 Electro-surgical instrument 97 1987
4,976,711 Ablation catheter with selectively deployable electrodes 584 1989
 
CORDIS CORPORATION (1)
4,920,980 Catheter with controllable tip 260 1987
 
EVERST MEDICAL CORPORATION (1)
4,674,498 Electro cautery surgical blade 87 1985
 
GYRUS MEDICAL, INC. (1)
4,905,691 Polypectome snare with bipolar electrodes 92 1989
 
MARVELL WORLD TRADE LTD. (1)
7,869,248 Bit line decoder architecture for NOR-type memory array 1 2008
 
OLYMPUS OPTICAL CO., LTD. (1)
4,311,143 Apparatus for resecting tissue inside the body cavity utilizing high-frequency currents 132 1979

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
ARTHROCARE CORPORATION (102)
7,758,537 Systems and methods for electrosurgical removal of the stratum corneum 8 1999
7,201,750 System for treating articular cartilage defects 88 1999
7,422,585 System for electrosurgical myocardial revascularization 19 1999
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7,572,251 Systems and methods for electrosurgical tissue treatment 28 1999
6,632,193 Systems and methods for electrosurgical tissue treatment 240 2000
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6,763,836 Methods for electrosurgical tendon vascularization 40 2002
7,435,247 Systems and methods for electrosurgical tissue treatment 66 2002
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6,920,883 Methods and apparatus for skin treatment 129 2002
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7,270,658 Systems and methods for electrosurgery 130 2003
7,192,428 Systems for epidermal tissue ablation 87 2003
7,094,215 Systems and methods for electrosurgical tissue contraction 114 2003
7,104,986 Intervertebral disc replacement method 97 2003
7,357,798 Systems and methods for electrosurgical prevention of disc herniations 66 2003
7,217,268 Method for electrosurgical tissue treatment near a patient's heart 98 2003
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7,241,293 Electrode screen enhanced electrosurgical apparatus and methods for ablating tissue 66 2003
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7,387,625 Methods and apparatus for treating intervertebral discs 71 2004
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7,632,267 Fuse-electrode electrosurgical apparatus 16 2005
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7,297,145 Bipolar electrosurgical clamp for removing and modifying tissue 58 2005
7,169,143 Methods for electrosurgical tissue treatment in electrically conductive fluid 94 2005
7,691,101 Electrosurgical method and system for treating foot ulcer 24 2006
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7,429,260 Systems and methods for electrosurgical tissue contraction within the spine 44 2006
7,445,618 Methods for tissue ablation using pulsed energy 42 2007
7,468,059 System and method for epidermal tissue ablation 44 2007
7,901,403 Internally located return electrode electrosurgical apparatus, system and method 15 2007
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8,114,071 Hard tissue ablation system 0 2007
7,988,689 Electrosurgical apparatus and methods for treatment and removal of tissue 4 2007
8,663,216 Instrument for electrosurgical tissue treatment 0 2007
7,717,912 Bipolar electrosurgical clamp for removing and modifying tissue 2 2007
8,192,424 Electrosurgical system with suction control apparatus, system and method 23 2008
7,824,405 Electrosurgical apparatus and methods for laparoscopy 10 2008
7,794,456 Systems and methods for electrosurgical intervertebral disc replacement 2 2008
8,747,400 Systems and methods for screen electrode securement 0 2008
7,819,863 System and method for electrosurgical cutting and ablation 7 2008
8,355,799 Systems and methods for limiting joint temperature 5 2008
8,574,187 System and method of an electrosurgical controller with output RF energy control 1 2009
8,663,152 Electrosurgical method and system for treating foot ulcer 0 2009
8,663,153 Electrosurgical method and system for treating foot ulcer 0 2009
8,663,154 Electrosurgical method and system for treating foot ulcer 0 2009
8,636,685 Electrosurgical method and system for treating foot ulcer 0 2009
8,257,350 Method and system of an electrosurgical controller with wave-shaping 3 2009
8,323,279 System, method and apparatus for electrosurgical instrument with movable fluid delivery sheath 10 2009
8,372,067 Electrosurgery irrigation primer systems and methods 2 2009
8,747,399 Method and system of reduction of low frequency muscle stimulation during electrosurgical procedures 0 2010
8,801,705 Electrosurgical method and apparatus for removing tissue within a bone body 0 2010
8,696,659 Electrosurgical system and method having enhanced temperature measurement 0 2010
7,951,141 Systems and methods for electrosurgical intervertebral disc replacement 2 2010
8,685,018 Electrosurgical wand and related method and system 0 2010
8,568,405 Electrosurgical wand and related method and system 0 2010
D658760 Wound care electrosurgical wand 9 2010
8,747,401 Systems and methods for turbinate reduction 0 2011
8,292,887 Internally located return electrode electrosurgical apparatus, system and method 10 2011
8,444,638 Hard tissue ablation system 0 2012
 
BOSTON SCIENTIFIC SCIMED, INC. (31)
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7,832,406 Percutaneous myocardial revascularization 2 2005
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7,625,356 Tortuous path injection device 0 2006
 
GYRUS MEDICAL LIMITED (20)
6,293,942 Electrosurgical generator method 304 1996
6,015,406 Electrosurgical instrument 267 1996
6,004,319 Electrosurgical instrument 302 1996
6,027,501 Electrosurgical instrument 282 1996
6,013,076 Electrosurgical instrument 206 1996
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BRONCUS MEDICAL INC. (3)
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SCIMED LIFE SYSTEMS, INC. (3)
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American Cardiac Ablation Co., Inc. (1)
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AthroCare Corporation (1)
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Other [Check patent profile for assignment information] (1)
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