Apparatus and method for recording monophasic action potentials

Details Apparatus and method for recording monophasic action potentials Apparatus and method for recording monophasic action potentials

1984-03-06

1987-07-28

Cohen, Lee S.

Surgery

Truss

Pad

128696, A61B 504

Patent

active

046826033

ABSTRACT:
The apparatus comprises a probe having a tip portion, a first electrode mounted on a terminal free end of the tip portion and a second electrode spaced along the tip portion from the first electrode for supplying a reference potential. The probe is constructed so as to hold the first electrode in contact with tissue of an in vivo beating heart with a positive pressure without causing macroscopic damage to the heart tissue while orienting the probe such that the second electrode is spaced from the heart tissue. According to the method of the present invention, a plurality of monophasic action potentials can be obtained using the apparatus of the invention. The monophasic action potentials are used to identify abnormal heart areas, such as ischemic areas.

REFERENCES:
patent: 4172451 (1979-10-01), Kline
Gosling et al, "A Hand-Held Probe . . . Signals", J. Med Eng & Tech. (GB), vol. 3, No. 6, Nov. 1979, p. 299.
Pepper et al, "Manual ECG Electrode", Med & Biol Eng. & Comput. 1979, 17, 141.
Siegel et al, "Intracardiac Electrode . . . Ischemia", PACE, vol. 5, Nov.-Dec. 1982, pp. 892-902.
"A Simple and Safe Method for Intracardiac Recording of Monophasic Action Potentials in the Human Heart" (Franz, Pidgeon, Seed, Schottler and Schaefer).
"Simultaneous Recording of Monophasic Action Potentials and Contractile Force from the Human Heart" (Franz, Schottler, Schaefer and Seed).
"Further Improved Method for Measuring Monophasic Action Potentials of the Intact Human Heart" (Olsson, Varnauskas and Korsgren).
"The Monophasic Electrogram Obtained from the Mammalian Heart" (Jochim, Katz and Mayne).

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