Biomedical system with improved marker channel means and method
First Claim
1. A pacemaker system comprising an implantable dual chamber pacemaker having means for sensing atrial and ventricular events and means for timing atrial and ventricular pacemaker operation, and external apparatus for storing data and displaying data, characterized bysaid pacemaker having output means for cyclically outputting event and pacemaker timing data representative of a prior pacemaker interval;
- said external apparatus having means for receiving and storing said outputted data in storage; and
graphic constructing means for constructing from said stored data a dual channel graphic output representative of both atrial and ventricular pacemaker timing and events for a plurality of pacemaker cycles, said graphic constructing means further comprising linear print means for printing linear symbols respectively representative of different sensing conditions, said linear symbols having lengths representative of the time durations of said sensing conditions.
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Abstract
A biomedical system such as a pacemaker system having an implantable pacemaker and external apparatus, with communications capability for communicating between the implanted device and the external apparatus, characterized by the implanted device having means for cyclically transmitting event and device timing data representative of each prior device interval, the external apparatus having means for receiving and storing the data and for graphically constructing a graphic output representative of the timing and event information over a plurality of device cycles. Graphic output preferably includes a linear timing graph representative of timing functions of the implanted device.
63 Citations
23 Claims
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1. A pacemaker system comprising an implantable dual chamber pacemaker having means for sensing atrial and ventricular events and means for timing atrial and ventricular pacemaker operation, and external apparatus for storing data and displaying data, characterized by
said pacemaker having output means for cyclically outputting event and pacemaker timing data representative of a prior pacemaker interval; -
said external apparatus having means for receiving and storing said outputted data in storage; and graphic constructing means for constructing from said stored data a dual channel graphic output representative of both atrial and ventricular pacemaker timing and events for a plurality of pacemaker cycles, said graphic constructing means further comprising linear print means for printing linear symbols respectively representative of different sensing conditions, said linear symbols having lengths representative of the time durations of said sensing conditions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for generating a graphic marker channel representative of event and timing data corresponding to operation of an implanted cyclically operating device, said graphic marker channel being presented on at least one time axis, comprising
cyclically outputting event and timing data representative of a prior device cycle, each said outputting comprising transmitting a group of data bytes corresponding to said prior device cycle; storing consecutive groups of bytes in external storage, each group representative of event and timing data outputted just after completion of a device interval; and
constructing a graphic marker channel representation of a plurality of device cycles, said graphic representation being derived from said groups of bytes and including line symbols printed along said time axis, each said line symbol being representative of the time duration of an operating condition of said device.- View Dependent Claims (11, 12, 13)
- 14. A pacemaker system comprising a pacemaker and external apparatus, the pacemaker and external apparatus having means for communicating therebetween, characterized by said pacemaker having means for transmitting event and pacemaker timing data to said external apparatus, and said external apparatus having linear graphic means for generating a continuous linear graphic timing display of pacemaker operation over a plurality of cycles, said linear display including line symbols having lengths representative of the time durations of pacemaker operating conditions, and symbol means for generating graphic symbols representative of events and for positioning said graphic symbols relative to said linear timing display in correspondence with the timing of said events.
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17. A method for generating a linear graphic marker channel output representative of event and timing data corresponding to operation of an implanted cyclically operating pacemaker, said method being carried out by a pacemaker system including said implanted pacemaker and external apparatus, comprising
transmitting event and pacemaker timing data from said pacemaker to said external apparatus, receiving said data at said external apparatus and generating a linear graphic timing display of the operation of said pacemaker over a plurality of cycles, said generating step including utilizing said received data and printing lines having lengths representative of periods of time of operation of said pacemaker.
Specification