Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1991-11-26
1994-02-15
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
A61N 1362
Patent
active
052857808
ABSTRACT:
Disclosed is a pacemaker having an output circuit which is set to a high impedance when the potential of the input signal transmitted through the input-output terminal is within a predetermined range, and is set to a low impedance when the potential of the signal is outside of the range. Therefore, the time when the input to an R wave detection circuit must be stopped due to the after potential becomes extremely short and the failure of detection of an R wave decreases and, further, there are no rapid fluctuations in the potential arising due to the on-off operation of the switch. Further, the pacemaker of the invention may include a pulse lowering circuit for inputting a lowering pulse to the R wave detecting circuit so that the pacing pulse and the following after potential can't be detected as the R wave of the electrical activity of the heart.
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Horikawa Masayuki
Tsuji Takashi
Kamm William E.
Nippon Zeon Co. Ltd.
Schaetzle Kennedy J.
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