Surgery – Instruments – Cyrogenic application
Patent
1994-01-24
1995-06-13
Aschenbrenner, Peter A.
Surgery
Instruments
Cyrogenic application
606 33, 607105, A61B 1736
Patent
active
054238072
ABSTRACT:
The invention provides a catheter for ice mapping and ablation and a method of ablation using the catheter. The catheter includes at least two conduits for circulating a refrigerating fluid adjacent an ablation device located at the end of a catheter. The refrigerated ablation device is used to chill a localized region of myocardial tissue, thereby permitting the resulting change in electrical activity to be determined. In response to the test results, the ablation device may be used to make a lesion in the myocardial tissue to correct a cardiac arrhythmia. In one embodiment, the ablation device is an electrode which uses radio frequency energy to ablate the myocardial tissue. Alternatively, the ablation device is an electrode adapted for direct current ablation. In another embodiment, the electrode is replaced with an optical fiber in communication with a laser which uses the laser's light energy to ablate tissue. Yet another embodiment is a cryogenic catheter having combined or separate mapping and ablation devices. In another embodiment, a cryogenic catheter is provided having an inner conduit with a stepped down diameter. The embodiments may include provisions for steering the catheter and for stabilizing the ablation device at the proposed lesion site.
REFERENCES:
patent: 3272203 (1966-09-01), Chato
patent: 3298371 (1967-01-01), Lee
patent: 3393679 (1968-07-01), Crump et al.
patent: 3425419 (1969-02-01), Dato
patent: 3470876 (1969-10-01), Barchilon
patent: 3512531 (1970-05-01), Crump et al.
patent: 3548829 (1970-12-01), Reynolds et al.
patent: 3664344 (1972-05-01), Bryne
patent: 3823718 (1974-07-01), Tromovitch
patent: 3859986 (1975-01-01), Okada et al.
patent: 3910277 (1975-10-01), Zimmer
patent: 3971383 (1976-07-01), van Gerven
patent: 4029102 (1977-06-01), Barger
patent: 4202336 (1980-05-01), Garvan
patent: 4207897 (1980-06-01), Lloyd et al.
patent: 4275734 (1981-06-01), Mitchiner
patent: 4278090 (1981-07-01), van Gerven
patent: 4406656 (1983-09-01), Hattler et al.
patent: 4519389 (1985-05-01), Gudkin et al.
patent: 4860744 (1989-08-01), Johnson et al.
patent: 5108390 (1992-04-01), Potocky et al.
patent: 5139496 (1992-08-01), Hed
patent: 5147355 (1992-09-01), Friedman et al.
patent: 5254116 (1993-10-01), Baust et al.
patent: 5275595 (1994-01-01), Dobak, III
patent: 5281213 (1994-01-01), Milder et al.
patent: 5281215 (1994-01-01), Milder
Frigitronics CCS-100 Cardiac Cryosurgical System, Frigitronics 2-page brochure. May 1989.
Laboratory Investigation-Electrophysiology "Reentrant Ventricular Arrhythmias in the Late Myocardial Infarction Period" by Nabil El-Sherif, M. D., et al., pp. 644-656 May 1983.
Cardiac Ccryosurgery "Effects of Myocaridal Temperature on Cryolesion Size" by William L. Holman, M. D., et al., pp. 268-272 1983.
"Cryosurgical Ablation of Atrioventricular Junction Without Extracorporeal Circulation" by Jurgis Bredikis, M.D., pp. 61-67 1985.
The annals of Thoracic Surgery--"Surgical Repair of Wolff-Parkinson-White Syndrome: A New Closed-Heart Technique" by Gerard M. Guiraudon, M.D., et al., vol. 37, No. 1, Jan. 1984, pp. 67-71.
the Journal of Thoracic and Cardiovascular Surgery--"Transannular Cryoablation of Ventricular Tachycardia" by Gerald M. Lawrie, M.D., et al., vol. 98, No. 6, Dec. 1989.
European Heart Journal (1988) "Cryosurgery for Ventricular Bigeminy Using a Transaortic Closed Ventricular Approach" by F. E. E. Vermeulen, et al., pp. 979-990.
"Ventricular Cryosurgery: Short-Term Effects On Intramural Electrophysiology" by William L. Holman, M.D., et al. pp. 386-393 1982.
"Transvenous Cryoablation of the Bundle of His" by Paul C. Gillett, et al., vol. 14, Apr. 1991, pp. 504-510 1989.
Aschenbrenner Peter A.
Implemed, Inc.
LandOfFree
Cryogenic mapping and ablation catheter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cryogenic mapping and ablation catheter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cryogenic mapping and ablation catheter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1306281