Surgery – Instruments – Electrical application
Reexamination Certificate
1996-12-20
2001-05-22
Peffley, Michael (Department: 3739)
Surgery
Instruments
Electrical application
C607S101000, C607S105000
Reexamination Certificate
active
06235022
ABSTRACT:
This invention relates to an RF generator and pump apparatus and system and method for cooled ablation of cardiac tissue.
The use of cooled ablation for ablating cardiac tissue is disclosed in U.S. Pat. No. 5,348,554. As disclosed therein radio frequency energy for ablation of cardiac tissue is utilized while simultaneously delivering a sterile biocompatible fluid to the ablation electrode of the ablation catheter. in order to obtain the appropriate site for performing an ablation, the mapping of the walls of the chamber of the heart can be carried out by the use of a mapping catheter of the type disclosed in U.S. Pat. No. 5,156,151. As is well known to those skilled in the art, the use of such mapping in ablation procedures is typically used for the treatment of cardiac arrhythmias. A combined RF generator and pump apparatus for performing a cool ablation has heretofore been provided. However, such apparatus has been deficient in providing the precision and control features desired with such apparatus. There is therefore need for a new and improved radio frequency generator and pump apparatus and system and method for performing a cooled ablation procedure.
In general, it is an object of the present invention to provide a radio frequency generator and pump apparatus and system and method for automatically controlling the cooled ablation of cardiac tissue.
Another object of the invention is to provide an apparatus, system and method of the above character in which a high degree of automation is utilized.
Another object of the invention is to provide an apparatus, system and method of the above character in which closed loop controls are utilized.
Another object of the invention is to provide a radio frequency generator and pump apparatus which can be used with different types of catheters for performing cooled ablation.
Another object of the invention is to provide an apparatus, system and method of the above character which incorporates a number of safety features.
Another object of the invention is to provide an apparatus, system and method of the above character in which a progress bar is utilized to provide information to the user about the status of an ablation procedure.
REFERENCES:
patent: 5156151 (1992-10-01), Imran
patent: 5279569 (1994-01-01), Neer et al.
patent: 5330518 (1994-07-01), Neilson et al.
patent: 5334193 (1994-08-01), Nardella
patent: 5342357 (1994-08-01), Nardella
patent: 5348554 (1994-09-01), Imran et al.
patent: 5628771 (1997-05-01), Mizukawa et al.
Hallock Daniel K.
Jamgotchian Daryl C.
Cardiac Pathways, Inc
Flehr Hohbach Test Albritton & Herbert LLP
Peffley Michael
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