RF Telemetry Transmission Between An Active Implantable Medical Device And A Remote External Receiver
First Claim
1. A method for transmission of information from an active implantable medical device to a remote external receiver by RF telemetry, comprising:
- prior to the transmission of information;
characterizing information to be transmitted according to one of a plurality of classes of information (TYPE 0, TYPE 1, . . . , TYPE n) and assigning to each said class of information a criticality index (IC) defining a relative priority between the different information classes to be transmitted;
defining of a plurality of possible transmission configurations (0, 1, . . . , n), each transmission configuration being defined by at least one characteristic of the group comprising a modulation scheme, a setting of the modulation scheme and a data rate;
characterizing said transmission configurations thus defined by assigning to each transmission configuration a reliability index that is inversely related to a probability of failure of transmission in a noisy environment;
providing an ordered connection of said criticality indexes with the transmission configurations, the criticality indexes of the highest priorities being allocated to transmission configurations with higher reliability indexes, and vice versa; and
by the active implantable device, in response to a request for information to be transmitted;
selecting a transmission configuration according to the criticality index characterizing the requested information to be transmitted, andtransmitting a message containing the requested information to be transmitted with the selected transmission configuration.
1 Assignment
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Accused Products
Abstract
Optimized RF telemetry transmission between an active implantable medical device and a remote external receiver in which the information to be transmitted are grouped by class (TYPE 0, TYPE 1, . . . , TYPE n) according to a criticality index (IC) defining a priority rank as between the different information classes to be transmitted. A plurality of modulation schemes and of data rates characterize different transmission configurations, each with a reliability index inversely related to the probability of failure of transmission in a noisy environment. The criticality indexes of the highest priorities are assigned to the transmission configurations with the higher reliability indexes. On an information transmission request, an RF telemetry transmission configuration is selected (52-62) depending on the criticality index characterizing the information to be transmitted. The transmission is operated (64, 66) with the transmission configuration thus selected.
12 Citations
5 Claims
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1. A method for transmission of information from an active implantable medical device to a remote external receiver by RF telemetry, comprising:
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prior to the transmission of information; characterizing information to be transmitted according to one of a plurality of classes of information (TYPE 0, TYPE 1, . . . , TYPE n) and assigning to each said class of information a criticality index (IC) defining a relative priority between the different information classes to be transmitted; defining of a plurality of possible transmission configurations (0, 1, . . . , n), each transmission configuration being defined by at least one characteristic of the group comprising a modulation scheme, a setting of the modulation scheme and a data rate; characterizing said transmission configurations thus defined by assigning to each transmission configuration a reliability index that is inversely related to a probability of failure of transmission in a noisy environment; providing an ordered connection of said criticality indexes with the transmission configurations, the criticality indexes of the highest priorities being allocated to transmission configurations with higher reliability indexes, and vice versa; and by the active implantable device, in response to a request for information to be transmitted; selecting a transmission configuration according to the criticality index characterizing the requested information to be transmitted, and transmitting a message containing the requested information to be transmitted with the selected transmission configuration. - View Dependent Claims (2, 3, 4, 5)
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Specification