Surgery – Truss – Pad
Patent
1981-04-06
1984-06-12
Cohen, Lee S.
Surgery
Truss
Pad
128423R, 128908, A61N 136
Patent
active
044535473
ABSTRACT:
An electrical inhibitor system is disclosed for suppressing the application of transcutaneous nerve stimulator (TNS) signals during the T-wave portion of a heartbeat. The system includes a sensing circuit which is coupled to detect the R-S waveform produced by the heart during its normal beating pattern. Upon detection of the R-S portion of the waveform, an electrical signal is produced and coupled to timing circuitry to produce a timing signal having a duration in excess of the normal period of the T-wave portion of the heartbeat. The timing signal is to inhibit the output of a transcutaneous nerve stimulator during the T-wave portion of the heartbeat. When the inhibiting circuit and transcutaneous nerve stimulator are coupled to a patient, the system provides an inhibiting signal beginning during the R-S portion of the waveform and extending through the T-wave portion of the hearbeat to prevent application of the output from the transcutaneous nerve stimulator during the vulnerable period of the heart. The transcutaneous nerve stimulator can thus be used without endangering the patient from electrical stimulation.
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Castel John C.
Kerwin Richard G.
Cohen Lee S.
Physio Technology, Inc.
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