High-resolution medical monitoring apparatus particularly useful for electrocardiographs
AssigneeCheetah Medical, Inc.
InventorHanan Keren
Life of this patent
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Abstract
Medical monitoring apparatus to be used in an environment including electrical supply lines of a particular line frequency, for monitoring a particular body activity and for producing an electrical output signal corresponding to the monitored body activity includes: a first filter network connected to receive the electrical output signal and tuned to the line frequency for rejecting the line frequency component of the electrical output signal; a second filter network connected to receive the output of the first filter network and also tuned to the line frequency for rejecting the line frequency component of the electrical output signal; and a high impedance coupling between the first and second filter networks.
Claims8
Medical monitoring apparatus to be used in an environment including electrical supply lines of a particular line frequency, for monitoring a particular body activity and for producing an electrical output signal corresponding to the monitored body activity;
- said apparatus, comprising:
- a first filter network connected to receive said electrical output signal and tuned to said line frequency for rejecting the line frequency component of said electrical output signal;
- a second filter network connected to receive the output of said first filter network and also tuned to said line frequency for rejecting the line frequency component of said electrical output signal;
- and a high impedance coupling between said first and second filter networks.
Medical monitoring apparatus to be used in an environment of electrical supply lines of a particular line frequency, for monitoring a particular body activity and for producing an electrical output signal corresponding to the monitored body activity;
- said apparatus, including a filter network connected to receive said electrical output signal and tuned to said line frequency for rejecting the line frequency component of said electrical output signal;
- said filter network comprising:
- a first capacitor and a second capacitor connected in series with each other to ground;
- and an operational amplifier having one input connected from a point between the second capacitor and ground, an output connected to a point between the first and second capacitors, and a second input connect to said output of the operational amplifier.
Dependencies are inferred from the claim text.