Method and apparatus for signal transmission with isolation in medical devices
First Claim
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1. An apparatus for transmitting signals between a non-isolated portion and an isolated portion of a medical device, comprising:
- an isolation module configured to transmit power between the non-isolated portion and the isolated portion and configured to transmit a dynamic signal between the non-isolated portion and the isolated portion;
at least one frequency to voltage converter configured to receive said dynamic signal transmitted by the isolation module and configured to convert a portion of said dynamic signal to a data signal, said data signal having a voltage based on a frequency of said portion of said dynamic signal and said portion of said dynamic signal is within a particular frequency band; and
at least one filter configured to filter said particular frequency band from said dynamic signal.
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Abstract
An apparatus and method for signal transmission with isolation in medical devices. Data signals, such as patient measurement data and medical instrumentation control signals are converted to dynamic signals which are transmitted on power lines through an isolation module, such as a transformer. The dynamic signals are then converted to data signals having a voltage based on the frequency of the dynamic signals.
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Citations
24 Claims
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1. An apparatus for transmitting signals between a non-isolated portion and an isolated portion of a medical device, comprising:
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an isolation module configured to transmit power between the non-isolated portion and the isolated portion and configured to transmit a dynamic signal between the non-isolated portion and the isolated portion; at least one frequency to voltage converter configured to receive said dynamic signal transmitted by the isolation module and configured to convert a portion of said dynamic signal to a data signal, said data signal having a voltage based on a frequency of said portion of said dynamic signal and said portion of said dynamic signal is within a particular frequency band; and at least one filter configured to filter said particular frequency band from said dynamic signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for transmitting signals between a non-isolated portion and an isolated portion of a medical device, comprising:
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an isolation module configured to transmit power between the non-isolated portion and the isolated portion and configured to transmit a dynamic signal between the non-isolated portion and the isolated portion; a plurality of voltage to frequency converters in said isolated portion, each configured to convert a received data signal to a dynamic signal having a frequency based on a voltage of said received data signal and within a unique frequency band; and wherein said isolation module is configured to transmit a combined dynamic signal including each dynamic signal to said non-isolated portion, and said at least one frequency to voltage converter comprises; a plurality of frequency to voltage converters in said non-isolated portion, each configured to convert a portion of said combined dynamic signal within one of the unique frequency bands into a data signal based on the frequency of the portion of the combined dynamic signal within the unique frequency band. - View Dependent Claims (9, 10, 11)
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12. A method for transmitting signals between a non-isolated portion and an isolated portion of a medical device, comprising the activities of:
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transmitting a dynamic signal between the non-isolated portion and the isolated portion of the medical device via an isolation module used to transmit power between the non-isolated portion and the isolated portion; converting at least a portion of said dynamic signal to a data signal having a voltage based on a frequency of said at least a portion of said dynamic signal and said portion of said dynamic signal is within a particular frequency band; and filtering said particular frequency band from said dynamic signal. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. An apparatus for transmitting signals between a non-isolated portion and an isolated portion of a medical device, comprising:
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means for transmitting a dynamic signal between the non-isolated portion and the isolated portion of the medical device and transmitting power between the non-isolated portion and the isolated portion; means for converting at least a portion of said dynamic signal to a data signal having a voltage based on a frequency of said at least a portion of said dynamic signal, wherein said at least a portion of said dynamic signal is within a particular frequency band; and means for filtering said particular frequency band from said dynamic signal. - View Dependent Claims (21, 22, 23, 24)
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Specification