System and method for real-time remote monitoring of implantable medical devices
First Claim
1. A method of transmitting a plurality of electrogram (EGM) signals associated with an implantable medical device (IMD) via a telephone line, the method comprising the steps of:
- receiving first and second EGM signals from the IMD;
frequency modulating the first and second EGM signals; and
transmitting the frequency modulated first and second EGM signals onto the telephone line.
2 Assignments
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Accused Products
Abstract
A patient monitor is configured to interrogate an implantable medical device (IMD) and receive data from the IMD in response to the interrogation. The data received from the IMD includes electrogram (EGM) data, which the patient monitor frequency modulates for transmission, in real-time, onto a conventional telephone line. The frequency modulated EGM data that is transmitted from the patient monitor may in turn be displayed, in real-time, at a remote monitoring station in response to commands provided by a remote (DTMF) signal from a receiving station.
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Citations
25 Claims
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1. A method of transmitting a plurality of electrogram (EGM) signals associated with an implantable medical device (IMD) via a telephone line, the method comprising the steps of:
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receiving first and second EGM signals from the IMD;
frequency modulating the first and second EGM signals; and
transmitting the frequency modulated first and second EGM signals onto the telephone line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An implant monitor for monitoring an implantable medical device (IMD), the monitor comprising:
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an RF receiver adapted to receive an RF signal transmitted from the IMD, the RF signal modulated with at least first and second electrogram (EGM) data, the RF receiver configured to demodulate the first and second EGM data from the received RF signal;
a frequency modulation circuit coupled to receive the demodulated first and second EGM data and a substantially fixed-frequency signal and configured to frequency modulate the fixed-frequency signal based on the demodulated first and second EGM data and supply first and second frequency modulated EGM data signals; and
an amplifier circuit coupled to receive the first and second frequency modulated EGM data signals and configured to supply a composite frequency modulated signal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of frequency modulating digital data transmitted from an implantable medical device (IMD), the method comprising the steps of:
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periodically sampling the transmitted digital data to supply a sampled digital data value initializing a counter to the sampled digital data value;
incrementing the counter at a fixed frequency until the counter reaches a predetermined value; and
generating a pulse each time the counter reaches the predetermined value. - View Dependent Claims (24, 25)
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Specification