Surgery – Truss – Pad
Patent
1977-10-17
1979-10-30
Kamm, William E.
Surgery
Truss
Pad
A61N 136
Patent
active
041724593
ABSTRACT:
Cardiac monitoring apparatus comprising a first external unit for transmitting electromagnetic energy within the patient's body to be received by a second, surgically implanted unit within the patient's body and adapted to be solely powered by the transmitted electromagnetic energy. The internal unit includes a monitoring circuit connected via electrodes coupled to first and second sites of the patient's heart, for providing corresponding first and second signals to be first time multiplexed and then pulse-width modulated before being re-transmitted to the external unit. The external unit decodes the transmitted signals to provide diagnostic quality signals indicative of the patient's EKG.
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Holcomb et al., "Medical + Biological Engineering", vol. 7, No. 5, Sep. 1969, pp. 493-499.
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Breimayer Joseph F.
Gable R. Lewis
Kamm William E.
Medtronic Inc.
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