Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical energy applicator
Patent
1993-08-02
1995-06-13
Cohen, Lee S.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical energy applicator
A61N 105
Patent
active
054238781
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. A stylet is retractably mounted within the probe, for allowing a physician to maneuver the probe through a vein or the like. Once the probe is in position, it may be replaced by a probe of a different shape. The probe may also be retracted while being inserted, for preventing internal injury to the patient. The stylet may have a noncircular cross-section for restricting directions in which it can bend. In an alternative embodiment, a combination catheter is disclosed, including pacing electrodes for pacing the heart while measuring the potentials thereof. The pacing electrodes of this embodiment are placed near the tip of the catheter, and circumferentially displaced from one another to form an electric dipole for pacing the heart, and in addition are relatively small, to minimize the potential threshold necessary to pace the heart. Such pacing electrodes may be used without the first and second electrodes for measuring potentials.
REFERENCES:
patent: 1060665 (1913-05-01), Bell
patent: 3665064 (1972-05-01), Mosier et al.
patent: 4135518 (1979-01-01), Dutcher
patent: 4172451 (1979-10-01), Kline
patent: 4365639 (1982-12-01), Goldreyer
patent: 4379462 (1983-04-01), Borkan et al.
patent: 4386615 (1983-06-01), Sowton
patent: 4630611 (1986-12-01), King
patent: 4682603 (1987-07-01), Franz
patent: 4690155 (1987-09-01), Hess
patent: 4799474 (1989-01-01), Ueda
patent: 4848352 (1989-07-01), Pohndorf et al.
Franz et al., (1980) Pflugeos arch., p. R2.
Franz et al., (1980) Klin. Wochenschr.58:1357-1359.
Olsson et al., (1971) J. Electrocardiology 4(1) :19-23.
Ferris, In Introduction to Bioeclectrodes, 1974, p. 94-95.
"The Monophasic Electrogram Obtained From the Mammalian Heart" (Jochim, Katz and Mayne).
Gosling et al., "A Hand--held probe ... signals", J. Med. Eng. & Tech. (GB) vol. 3, No. 6, Nov. 1979, p. 299 (128/642).
Pepper et al., "Manual ECG Electrode", Med & Biol. Eng. & Comput., 1979, 17, 141 (128/639).
Siegel et al., "Intracardiac Electrode ... Ischemia", PACE, vol. 5 Nov-Dec. 1982, pp. 892-902 (128/642).
Cohen Lee S.
EP Technologies, Inc.
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