Apparatus for sensing and transmitting a pacemaker's stimulating

Communications: electrical – Systems – Call station

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Details

128 21A, 128 206R, 128419PT, 179 2DP, 340180, G08C 1922, A61B 504

Patent

active

041515137

ABSTRACT:
Apparatus is disclosed for sensing and transmitting the stimulating pulse of an implanted pacemaker over readily available, low-bandwidth transmission media to a remote receiver capable of measuring the pulse width to provide an indication of the condition of the pacemaker energy source, e.g. a battery. In particular, the sensing and transmitting apparatus detects the electrical activity, e.g. the EKG, of a patient through attached electrodes and modulates a carrier or tone of a suitable frequency to be transmitted over the low-bandwidth transmission medium to the receiver, along with a pulse signal multiplied by a selected, fixed factor dependent upon the carrier frequency of the signal and the other information to be transmitted to the receiver. Illustratively, a factor in the range of 30-50 is selected where it is desired to transmit the pulse width of the pacemaker stimulating pulse along with an EKG, to a receiver to be displayed in a manner to permit evaluation of the EKG and of the width of the stimulating pulse. Typically, the patient in which the pacemaker is implanted has a transmitter for transmitting the aforementioned data to a receiver located in the doctor's office, clinic or hospital, whereby a regular check of the pacemaker's energy source may be made by the patient's doctor.

REFERENCES:
patent: 3657658 (1972-04-01), Kubo
patent: 3769965 (1973-11-01), Raddi et al.
patent: 3780727 (1973-12-01), King
patent: 3871363 (1975-03-01), Day
patent: 3872252 (1975-03-01), Malchman et al.
patent: 3885552 (1975-05-01), Kennedy
patent: 3920005 (1975-11-01), Gombrich et al.
patent: 3923041 (1975-12-01), Stasz
Furman, "Medical Instrumentation", May-Aug. 1973, pp. 196-202.

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