Surgery – Truss – Pad
Patent
1995-06-07
1997-08-19
Jastrzab, Jeffrey R.
Surgery
Truss
Pad
607122, 606 41, A61B 504, A61N 136
Patent
active
056577559
ABSTRACT:
A system and method for cardiac mapping and ablation include a multi-electrode catheter introduced percutaneously into a subject's heart and deployable adjacent to various endocardial sites. The electrodes are connectable to a mapping unit, an ablation power unit a pacing unit, all of which are under computer control. Intracardiac electrogram signals emanated from a tachycardia site of origin are detectable by the electrodes. Their arrival times are processed to generate various visual maps to provide real-time guidance for steering the catheter to the tachycardia site of origin. In another aspect, the system also include a physical imaging system which is capable of providing different imaged physical views of the catheter and the heart. These physical views are incorporated into the various visual maps to provide a more physical representation. Once the electrodes are on top of the tachycardia site of origin, electrical energy is supplied by the ablation power unit to effect ablation.
REFERENCES:
patent: 4365639 (1982-12-01), Goldreyer
patent: 4649924 (1987-03-01), Taccardi
patent: 4660571 (1987-04-01), Hess et al.
patent: 4940064 (1990-07-01), Desai
patent: 5154501 (1992-10-01), Svenson et al.
patent: 5156151 (1992-10-01), Imran
patent: 5158092 (1992-10-01), Glace
patent: 5233515 (1993-08-01), Cosman
patent: 5433198 (1995-07-01), Desai
patent: 5443489 (1995-08-01), Ben-Haim
patent: 5494042 (1996-02-01), Panescu et al.
Spach, M.S., Dolber, P.C., and Heidlage, J.F. "Resolution of Discontinuous Versus Continuous Propagation: Microscopic Mapping of the Derivatives of Extracellular Potential Waveforms" Cardiac Electrophysiology From Cell to Bedside. Zipes/Jalife Chapter 16. pp. 139-148 W.B. Saunders Company, Harcourt Brace Jovanovich, Inc. 1990.
Smith, W.M., Wharton, J.M., Blanchard, S.M., Wolf, P.D. and Ideker, R.E. "Direct Cardiac Mapping" Cardiac Electrophysiology From Cell to Bedside. Zipes/Jalife Chapter 88. pp. 849-858 W.B. Saunders Company, Harcourt Brace Jovanovich, Inc. 1990.
Fontaine, G., Frank, R., Tonet, J., Rougier, I., Farenq, G., and Grosgogeat, Y. "Fulguration of Chronic Ventricular Tachycardia: Results of Forty-seven Consecutive Cases with a Follow-up Ranging from 11 to 65 Months" Cardiac Electrophysiology From Cell to Bedside. Zipes/Jalife Chapter 106. pp. 978-985 W.B. Saunders Company, Harcourt Brace Jovanovich, Inc. 1990.
Haines and Watson, "Tissue Heating During Radiofrequency Catheter Ablation: A Thermodynamic Model and Observations in Isolated Perfused and Superfused Canine Right Ventricular Free Wall," PACE, vol. 12, Jun., 1989, 962-976.
Jawahar Desai, M.d., et al., "Endocardial Isochronal Patterns Near the Ventricular Tachycardia Site of Origin With Orthogonal Electrode Catheter Array," JACC, vol. 13, No. 2, Feb. 1989, p. 167A (Abstract Only).
Louis Harris, M.D., et al. "Activation Sequence of Ventricular Tachycardia: Endocardial and Epicardial Mapping Studies in the Human Ventrical," JACC Electrophysiologic Studies, vol. 10 (1987) pp. 1040-147.
Eugene Downar, et al., "Intraoperative Electrical Ablation of Ventricular Arrhythmias" A Closed Heart Procedure, JACC, vol. 10, No. 5, Nov. 1987, pp. 1048-1056.
John M. Miller, M.D., et al., "Pattern of Endocardial Activation During Sustained Ventricular Tachycardia," JACC, vol. 6, No. 6, Dec. 1985, pp. 1280-1287.
Raymond E. Ideker, et al., "The Assumptions of Isochronal Cardiac Mapping," PACE, vol. 12, Mar. 1989, pp. 456-478.
Mark E. Josephson, M.D., et al., "Role of Catheter Mapping in the Preoperative Evaluation of Ventricular Tachycardia," The American Journal of Cardiology, vol. 49, Jan. 1982, pp. 207-220.
Morady, M.D., et al., "Catheter Ablation of Ventricular Tachycardia With Intracardiac Shocks: Results in 33 Patients," Therapy and Prevention, Arrhythmia, vol. 75, #5, May 1987, pp. 1037-1049.
Mark E. Josephson, M.D., et al., "Recurrent Sustained Ventricular Tachycardia 2. Endocardial Mapping," Circulation, vol. 57, #3, Mar. 1978, pp. 440-447.
Nabil El-Sherif, M.D., et al., "Reentrant Ventricular Arrhythmias in the Late Myocardial Infarction Period," Laboratory Investigation, Circulation, vol. 68, No. 3, Sep. 1983, pp. 644-656.
Charles J. Robinson, "Medical Electronics," IEEE Spectrum, Jan. 1991, pp. 76-78.
Sedgwick L. Simons, Jr., "Make Fast and Simple Contour Plots on a Microcomputer", Byte Publications, Inc., Nov. 1983, pp. 487-492.
"The Echo-Transponder Electrode Catheter: A New Method for Mapping the Left Ventricle", by Jonathan J. Langberg, MD et al., 1988, The American College of Cardiology, JACC vol. 12, No. 1, Jul. 1988:218-23.
Jawahar M. Desai, et al., "Orthogonal Electrode Catheter Array for Mapping of Endocardial Focal Site of Ventricular Activation," PACE, vol. 14, Apr. 1991, Part I, pp. 557-574.
Shoei K. Stephen Haunt, et al., "Transcatheter High Energy Shock in Patients with Unimorphic Sustained Ventricular Tachycardia & Coronary Artery Case," NASPE Abstracts, Apr. 1989, Part I pp. 674-675.
Desai, et al., "Two Phase Radiofrequency Ablation," Journal of Pacing and Clinical Electrophysiology, vol. 14, Jul. 1991, Art. #2987B, pp. 1979-1987.
Mohammad R. Jazayeri, M.D., et al., "Selective Transcatheter Ablation of the Fast and Slow Pathways Using Radiofrequency Energy in Patients With Antrioventricular Nodal Reentrant Tachycardia," Circ., vol. 85, #4, Apr. 1992.
Hugh Calkins, M.D., et al., "Electrogram Criteria for Identification of Appropriate Target Sites for Radiofrequency Catheter Ablation of Accessory Atrioventricular Connections", Circulation, vol. 85, No. 2, Feb. 1992.
"Vector Mapping of Myocardial Activation", Alan H. Kadish et al., Laboratory Investigation-Arrhythmia, vol. 74, No. 3, Sep. 1986, pp. 603-615.
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