Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1993-09-23
1995-07-11
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
A61N 136
Patent
active
054316898
ABSTRACT:
A cardiac arrhythmia is terminated by stimulating the heart during the narrow "region of susceptibility" or termination window of the arrhythmia cycle based upon a statistically significant starting value. The present invention will store a plurality of successful critically timed intervals and compute a central value (e.g., average, mean, median, etc.) and a measure of variability (sample range, standard deviation, etc.). The measure of variability is used to determine the termination window size. In one embodiment, the present invention then "scans" symmetrically-centrifugally about the statistically significant starting value. In an alternate embodiment, the present invention employs ranked scanning, that is, scanning according to the frequency of occurrence of previously successful starting values. The number and size of steps could be either programmable, or automatically computed by the pulse generator based upon the termination window size. With each successful termination, the statistically significant starting value is updated, thereby providing an intelligent stimulation device which can adapt itself to the patient's ever-changing needs. Histograms of the data could also be displayed on a screen so that the physician could quickly verify the appropriateness of the computed central value and range.
REFERENCES:
patent: 3942534 (1976-03-01), Allen et al.
patent: 3949758 (1976-04-01), Jirak
patent: 4312356 (1982-01-01), Sowton et al.
patent: 4390021 (1983-06-01), Spurrell et al.
patent: 4398536 (1983-08-01), Nappholz et al.
patent: 4406287 (1983-09-01), Nappholz et al.
patent: 4408606 (1983-10-01), Spurrell et al.
patent: 4427011 (1984-01-01), Spurrell et al.
patent: 4541430 (1985-09-01), Elmqvist et al.
patent: 4561442 (1985-12-01), Vollmann et al.
patent: 4574437 (1986-03-01), Segerstad et al.
patent: 4577633 (1986-03-01), Berkovits et al.
patent: 4726380 (1988-02-01), Vollmann et al.
patent: 4872459 (1989-10-01), Pless et al.
patent: 5103822 (1992-04-01), Duncan
patent: 5144947 (1992-09-01), Wilson
Sowton, Edgar, "Clinical Results with the Tachylog Antitachycardia Pacemaker," PACE, vol. 7, pp. 1313-1317 (Nov.--Dec. 1984 Part II).
Vallin, H. O., "Centrifugal Geometric Scanning--an Alternative Concept in Pacemaker Treatment of Tachycardias," Cardiac Pacing, pp. 809-814 (1983).
Siemens Tachylog 651 B and 651 L Physician's Manual (Nov. 1984). (complete manual, pp. 1-80).
Sholder Jason A.
Weinberg Lisa P.
Kamm William E.
Pacesetter Inc.
Schaetzle Kennedy J.
Weinberg Lisa P.
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