Impedance measuring pacer

Details Impedance measuring pacer Impedance measuring pacer

1980-08-29

1982-07-06

Kamm, William E.

Surgery

Truss

Pad

A61N 136

Patent

active

043377769

ABSTRACT:
A pacer which facilitates the measurements of both electrode impedance and stimulation threshold. When activated by an external magnet, a sequence of reducing-amplitude stimulating pulses is generated, with successive pulses in the sequence being separated by full-amplitude pulses. This pulse alternation scheme allows long test sequences, and therefore measurements with greater resolution, because full-amplitude pacing pulses are always present (even though at a slightly reduced rate). The reduction in amplitude of successive pulses is determined by the electrode impedance rather than being predetermined, and thus the examination of a skin potential recording allows electrode impedance to be determined along with the capture threshold.

REFERENCES:
patent: 3669120 (1972-06-01), Nielsen
patent: 3756246 (1973-09-01), Thaler et al.
patent: 3777762 (1973-12-01), Nielsen
patent: 3800801 (1974-04-01), Gaillard
patent: 3845773 (1974-11-01), Fontaine
patent: 3857085 (1974-12-01), Mulier et al.
patent: 3949758 (1976-04-01), Jirak
patent: 4102345 (1978-07-01), Cannon
patent: 4245643 (1981-01-01), Benzing et al.
Furman et al. "Medical Research Engineering" Third Qtr. 1967, pp. 29-32.

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