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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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 13041

Cited Art Landscape

Patent Info (Count) # Cites Year
 
EVEREST MEDICAL CORPORATION (2)
4,802,476 Electro-surgical instrument 95 1987
4,976,711 Ablation catheter with selectively deployable electrodes 559 1989
 
CORDIS CORPORATION (1)
4,920,980 Catheter with controllable tip 255 1987
 
EVERST MEDICAL CORPORATION (1)
4,674,498 Electro cautery surgical blade 85 1985
 
GYRUS MEDICAL, INC. (1)
4,905,691 Polypectome snare with bipolar electrodes 91 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 128 1979

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
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7,201,750 System for treating articular cartilage defects 80 1999
7,422,585 System for electrosurgical myocardial revascularization 16 1999
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6,632,220 Systems for electrosurgical tissue treatment in conductive fluid 120 1999
7,572,251 Systems and methods for electrosurgical tissue treatment 23 1999
6,632,193 Systems and methods for electrosurgical tissue treatment 229 2000
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7,704,249 Apparatus and methods for electrosurgical ablation and resection of target tissue 10 2005
7,892,230 Electrosurgical device having planar vertical electrode and related methods 4 2005
7,632,267 Fuse-electrode electrosurgical apparatus 13 2005
7,270,659 Methods for electrosurgical treatment of spinal tissue 86 2005
7,297,145 Bipolar electrosurgical clamp for removing and modifying tissue 53 2005
7,169,143 Methods for electrosurgical tissue treatment in electrically conductive fluid 89 2005
7,691,101 Electrosurgical method and system for treating foot ulcer 20 2006
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7,468,059 System and method for epidermal tissue ablation 40 2007
7,901,403 Internally located return electrode electrosurgical apparatus, system and method 14 2007
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8,114,071 Hard tissue ablation system 0 2007
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8,663,216 Instrument for electrosurgical tissue treatment 0 2007
7,717,912 Bipolar electrosurgical clamp for removing and modifying tissue 1 2007
8,192,424 Electrosurgical system with suction control apparatus, system and method 18 2008
7,824,405 Electrosurgical apparatus and methods for laparoscopy 8 2008
7,794,456 Systems and methods for electrosurgical intervertebral disc replacement 2 2008
7,819,863 System and method for electrosurgical cutting and ablation 6 2008
8,355,799 Systems and methods for limiting joint temperature 4 2008
8,574,187 System and method of an electrosurgical controller with output RF energy control 0 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 2 2009
8,323,279 System, method and apparatus for electrosurgical instrument with movable fluid delivery sheath 9 2009
8,372,067 Electrosurgery irrigation primer systems and methods 1 2009
8,696,659 Electrosurgical system and method having enhanced temperature measurement 0 2010
7,951,141 Systems and methods for electrosurgical intervertebral disc replacement 1 2010
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8,568,405 Electrosurgical wand and related method and system 0 2010
D658760 Wound care electrosurgical wand 8 2010
8,292,887 Internally located return electrode electrosurgical apparatus, system and method 8 2011
8,444,638 Hard tissue ablation system 0 2012
 
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6,093,186 Electrosurgical generator and system 286 1997
6,416,509 Electrosurgical generator and system 261 1998
6,090,106 Electrosurgical instrument 210 1998
6,056,746 Electrosurgical instrument 301 1998
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6,306,134 Electrosurgical generator and system 272 1998
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