US Patent Application No: 2001/0007,070

Number of patents in Portfolio can not be more than 2000

Ablation catheter assembly and method for isolating a pulmonary vein

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A catheter assembly and method for treatment of cardiac arrhythmia. In one preferred embodiment, the catheter assembly includes a catheter body, at least one electrode, and a fluid source. The catheter body includes a proximal portion, an intermediate portion, a distal portion, a first lumen, and an ablation section. The intermediate portion extends from the proximal portion and defines a longitudinal axis. The distal portion extends from the intermediate portion and forms a helix or coil. The first lumen extends from the proximal portion to the distal portion. Finally, the ablation section is formed along the helix of the distal portion and defines a loop transverse to the longitudinal axis. The ablation section is, in one preferred embodiment, comprised of a microporous material in fluid communication with the first lumen so as to irrigate fluid from the first lumen to an exterior surface of the ablation section. The electrode is associated with the ablation section. Finally, the fluid source is provided to supply a conductive fluid to the first lumen. With this configuration, upon activation, the electrode supplies an ablation energy to fluid irrigated to the exterior surface of the ablation section, thereby ablating a continuous, closed lesion pattern. During use, for example, the catheter assembly can ablate a closed lesion pattern corresponding with the loop defined by the ablation section on a chamber wall about a pulmonary vein ostium to electrically isolate the pulmonary vein from the left atrium. In one preferred embodiment, the ablation section is comprised of a high density, expanded PTFE material. In another preferred embodiment, a shaping wire is slidably disposed within the catheter body to selectively dictate the desired helical shape of the distal portion

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Patent Owner(s)

Patent OwnerAddressTotal Patents
MEDTRONIC, INC.MINNEAPOLIS, MN4873

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Skarda, James R Lake Elmo, MN 50 1302
Stewart, Mark T Lino Lakes, MN 125 2504

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Patent Info (Count) # Cites Year
 
BOSTON SCIENTIFIC SCIMED, INC. (21)
6,529,756 Apparatus for mapping and coagulating soft tissue in or around body orifices 171 1999
6,468,272 Surgical probe for supporting diagnostic and therapeutic elements in contact with tissue in or around body orifices 46 1999
6,745,080 Helical and pre-oriented loop structures for supporting diagnostic and therapeutic elements in contact with body tissue 50 2001
6,711,444 Methods of deploying helical diagnostic and therapeutic element supporting structures within the body 23 2001
7,727,229 Method and apparatus for altering conduction properties in the heart and in adjacent vessels 0 2002
7,255,695 Systems and methods for three-dimensional mapping of electrical activity 9 2002
6,904,303 Apparatus for mapping and coagulating soft tissue in or around body orifices 65 2002
6,923,808 Probes having helical and loop shaped inflatable therapeutic elements 35 2003
6,908,464 Loop structures for supporting diagnostic and therapeutic elements in contact with body tissue and expandable push devices for use with same 21 2003
7,081,115 Probes having helical and loop shaped inflatable therapeutic elements 50 2004
7,306,594 Apparatus and methods for mapping and ablation in electrophysiology procedures 14 2004
8,409,191 Preshaped ablation catheter for ablating pulmonary vein ostia within the heart 0 2004
7,184,811 Apparatus for mapping and coagulating soft tissue in or around body orifices 15 2005
8,249,685 Method and apparatus for mapping and/or ablation of cardiac tissue 3 2005
8,535,303 Preshaped localization catheter, system, and method for graphically reconstructing pulmonary vein ostia 1 2006
8,157,796 Apparatus and methods for mapping and ablation in electrophysiology procedures 1 2007
7,959,630 Medical probes for creating and diagnosing circumferential lesions within or around the ostium of a vessel 4 2008
8,473,067 Renal denervation and stimulation employing wireless vascular energy transfer arrangement 1 2011
8,527,027 Method and apparatus for mapping and/or ablation of cardiac tissue 0 2012
8,880,185 Renal denervation and stimulation employing wireless vascular energy transfer arrangement 0 2013
8,784,414 Preshaped localization catheter, system, and method for graphically reconstructing pulmonary vein ostia 0 2013
 
CATHRX LTD (7)
7,415,300 Multi-electrode lead 2 2003
7,347,857 Ablation catheter having a loop structure for effecting ablation of tissue 1 2003
* 8,062,284 Catheter assembly with an adjustable loop 4 2005
8,690,871 Catheter handle and a catheter assembly including such a handle 0 2006
* 7,740,629 Ablation catheter 2 2007
* 8,506,562 Deflectable stylet 0 2008
7,967,817 Multi-electrode lead 0 2008
 
MEDTRONIC, INC. (6)
6,702,811 Ablation catheter assembly with radially decreasing helix and method of use 140 2001
7,175,734 Porous medical catheter and methods of manufacture 3 2002
7,771,421 Ablation catheter assembly with radially decreasing helix and method of use 13 2003
* 7,251,532 Medical lead fixation 1 2003
8,257,351 Ablation catheter assembly with radially decreasing helix and method of use 4 2010
8,623,013 Ablation catheters and associated systems and methods 0 2012
 
CARDIODEX LTD. (3)
8,435,236 Techniques for heat-treating varicose veins 0 2005
8,366,706 Systems and methods for puncture closure 1 2008
8,372,072 Methods and apparatus for hemostasis following arterial catheterization 0 2011
 
RECOR MEDICAL, INC. (3)
* 7,083,614 Thermal treatment methods and apparatus with focused energy application 64 2002
7,326,201 Thermal treatment methods and apparatus with focused energy application 29 2005
7,540,846 Energy application with inflatable annular lens 1 2005
 
SYNTACH AG (3)
8,840,658 Electrical conduction block implant device 0 2009
8,257,376 Device, a kit and a method for treatment of disorders in the heart rhythm regulation system 2 2009
8,409,268 Electrical conduction block implant device 1 2010
 
CVDEVICES, LLC (2)
* 8,366,707 Systems and methods for epicardial navigation 0 2008
8,882,765 Devices, systems, and methods for epicardial navigation 0 2013
 
MEDTRONIC ARDIAN LUXEMBOURG S.A.R.L. (2)
8,774,913 Methods and apparatus for intravasculary-induced neuromodulation 0 2006
8,888,773 Multi-electrode catheter assemblies for renal neuromodulation and associated systems and methods 0 2013
 
LANX, INC. (1)
7,918,875 Interspinous distraction devices and associated methods of insertion 5 2005
 
MAQUET CRITICAL CARE AB (1)
8,204,570 Electrode for physiological signal measurements and method for making same 1 2006
 
MEDTRONIC CRYOCATH LP (1)
8,672,930 Endoluminal ablation cryoballoon and method 0 2010
 
PACESETTER, INC. (1)
* 7,403,823 Super plastic design for CHF pacemaker lead 3 2005
 
Other [Check patent profile for assignment information] (2)
* 2013/0085,468 CATHETER WITH BODY WALL SEPARATOR 0 2012
8,834,464 Ablation catheters and associated systems and methods 0 2012
* Cited By Examiner