System and method for assessing ice ball formation during a...

Details System and method for assessing ice ball formation during a... System and method for assessing ice ball formation during a...

2006-07-04

2006-07-04

Peffley, Michael (Department: 3739)

Surgery

Instruments

Cyrogenic application

C606S020000, C606S022000, C606S023000, C600S547000

Reexamination Certificate

active

07070594

ABSTRACT:
Systems and methods for assessing the formation of an ice ball during a cryoablation procedure are disclosed. The system includes a reference electrode that is placed in contact with the patient and a cryocatheter having a cryotip. An electronic circuit is connected to both the cryotip and the reference electrode to measure the impedance therebetween which can be used to assess the formation of an ice ball during a cryoablation procedure. An exemplary measurement signal has a frequency of approximately 20 khz and an RMS voltage of approximately 0.5V. With the cryotip positioned proximate the target tissue, a reference impedance is measured. Next, the conductive tip member is placed in contact with the target tissue and cooled to form an ice ball. During cooling, impedance measurement(s) are taken and compared with the reference impedance to assess the formation of the ice ball.

REFERENCES:
patent: 3696813 (1972-10-01), Wallach
patent: 3913581 (1975-10-01), Ritson et al.
patent: 4018227 (1977-04-01), Wallach
patent: 5053033 (1991-10-01), Clarke
patent: 5069223 (1991-12-01), McRae
patent: 5139496 (1992-08-01), Hed
patent: 5147355 (1992-09-01), Friedman et al.
patent: 5281213 (1994-01-01), Milder et al.
patent: 5281215 (1994-01-01), Milder
patent: 5423807 (1995-06-01), Milder
patent: 5759182 (1998-06-01), Varney et al.
patent: 5869971 (1999-02-01), Sherman
patent: 5876399 (1999-03-01), Chia et al.
patent: 5899898 (1999-05-01), Arless et al.
patent: 5899899 (1999-05-01), Arless et al.
patent: 5992158 (1999-11-01), Goddard et al.
patent: 6024740 (2000-02-01), Lesh et al.
patent: 6048919 (2000-04-01), McCullough
patent: 6117101 (2000-09-01), Diederich et al.
patent: 6139544 (2000-10-01), Mikus et al.
patent: 6190378 (2001-02-01), Jarvinen
patent: 6235018 (2001-05-01), LePivert
patent: 6235019 (2001-05-01), Lehmann et al.
patent: 6237355 (2001-05-01), Li
patent: 6245064 (2001-06-01), Lesh et al.
patent: 6251105 (2001-06-01), Mikus et al.
patent: 6280439 (2001-08-01), Martin et al.
patent: 6283959 (2001-09-01), Lalonde et al.
patent: 6383180 (2002-05-01), Lalonde et al.
patent: 6391024 (2002-05-01), Sun et al.
patent: 6407149 (2002-06-01), McCullough
patent: 6468268 (2002-10-01), Abboud et al.
patent: 6471693 (2002-10-01), Carroll et al.
patent: 6527769 (2003-03-01), Langberg et al.
patent: 6540740 (2003-04-01), Lehmann et al.
patent: 6551309 (2003-04-01), LePivert
patent: 6562030 (2003-05-01), Abboud et al.
patent: 6569158 (2003-05-01), Abboud et al.
patent: 6575966 (2003-06-01), Lane et al.
patent: 6579287 (2003-06-01), Wittenberger et al.
patent: 6585728 (2003-07-01), Heiner et al.
patent: 6585729 (2003-07-01), Eum
patent: 6589234 (2003-07-01), Lalonde et al.
patent: 6592577 (2003-07-01), Abboud et al.
patent: 6595988 (2003-07-01), Wittenberger et al.
patent: 6602247 (2003-08-01), Lalonde
patent: 6605087 (2003-08-01), Swartz et al.
patent: 6629972 (2003-10-01), Lehmann et al.
patent: 6635053 (2003-10-01), Lalonde et al.
patent: 6733494 (2004-05-01), Abboud et al.
patent: 6755823 (2004-06-01), Lalonde
patent: 6761714 (2004-07-01), Abboud et al.
patent: 2001/0021847 (2001-09-01), Abboud et al.
patent: 2001/0025075 (2001-09-01), Smith et al.
patent: 2002/0025998 (2002-02-01), McCullough et al.
patent: 2002/0062122 (2002-05-01), Lehmann et al.
patent: 2002/0111612 (2002-08-01), Lalonde et al.
patent: 2002/0115989 (2002-08-01), Abboud et al.
patent: 2003/0004504 (2003-01-01), Abboud et al.
patent: 2003/0009160 (2003-01-01), Carroll et al.
patent: 2003/0018326 (2003-01-01), Abboud et al.
patent: 2003/0097124 (2003-05-01), Lehmann et al.
patent: 2004/0049178 (2004-03-01), Abboud et al.
patent: 2004/0054361 (2004-03-01), Lehmann et al.
patent: 2005/0038422 (2005-02-01), Maurice

Affiliated with

Also associated with

Rating

System and method for assessing ice ball formation during a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System and method for assessing ice ball formation during a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for assessing ice ball formation during a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3608848