System, Methods And Apparatus For Waking An Autonomous Active Implantable Medical Device Communicating By Pulses Transmitted Through The Interstitial Tissues Of The Body
First Claim
1. A system for wireless communication between at least two active medical devices in which at least one active medical device is a transmitter device and at least one active implantable medical device is a receiver device, wherein:
- the transmitter device comprises a first pair of electrodes and a transmitter means (40) for generating modulated pulse trains comprising a wake-up plurality of pulses in a series corresponding to a communication to the receiver device, and a wake-up signal preceding said pulse train, said wake-up signal having a predetermined characteristic pulse pattern, and for applying said wake-up signal and modulated pulse train pulses said to electrodes (22, 24); and
the receiver device comprises an energy source, at least one active circuit element, a second pair of electrodes (22′
, 24′
), and a receiver means (50) for collecting a signal at said electrodes and processing said received signal to identify therein a received wake-up signal and modulated pulse train corresponding to said wake-up signal and modulated pulse train from said transmitter means, and means for demodulating said received modulated pulse train into a received pulse train corresponding to said plurality of pulses;
wherein said receiver means (50) further comprises means for selectively switching said at least one active circuit element between a sleep state not powered by said energy source (34) and an operational state powered for processing said signal using said at least one active circuit element; and
,wake-up circuit means (66) for discriminating said received wake-up signal having said predetermined characteristic pulse pattern, and in response, switching the receiver means from the sleep state to the operational state, wherein;
said wireless communication is an intracorporeal communication of electrical pulses conducted by the interstitial tissues of a patient'"'"'s body; and
the wake-up circuit means comprises a detector circuit (74, 84) and a hysteresis comparator (76, 88).
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Accused Products
Abstract
An autonomous active medical implantable device, with a power supply and a wake-up circuit that responds to receipt of specific pulses transmitted through the interstitial tissues of the body transmitter device (40) generates trains of modulated pulses applied to electrodes (22, 24), and a receiver (50) processes (e.g., filter, amplify and demodulate) pulses collected on electrodes (22′, 24′). The receiver circuits (50) are selectively activated from a dormant (sleep) state in which they are not powered by a power source (34), to an operational (active) state in which they are powered and able to process (e.g., filter, amplify and demodulate) the collected pulses specific wake-up pulse train, configured in a predetermined characteristic pulse pattern triggers passive wake-up circuits (66) in the receiver (50) to switch the receiver circuits from the sleep state to the operational state.
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Citations
34 Claims
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1. A system for wireless communication between at least two active medical devices in which at least one active medical device is a transmitter device and at least one active implantable medical device is a receiver device, wherein:
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the transmitter device comprises a first pair of electrodes and a transmitter means (40) for generating modulated pulse trains comprising a wake-up plurality of pulses in a series corresponding to a communication to the receiver device, and a wake-up signal preceding said pulse train, said wake-up signal having a predetermined characteristic pulse pattern, and for applying said wake-up signal and modulated pulse train pulses said to electrodes (22, 24); and the receiver device comprises an energy source, at least one active circuit element, a second pair of electrodes (22′
, 24′
), and a receiver means (50) for collecting a signal at said electrodes and processing said received signal to identify therein a received wake-up signal and modulated pulse train corresponding to said wake-up signal and modulated pulse train from said transmitter means, and means for demodulating said received modulated pulse train into a received pulse train corresponding to said plurality of pulses;wherein said receiver means (50) further comprises means for selectively switching said at least one active circuit element between a sleep state not powered by said energy source (34) and an operational state powered for processing said signal using said at least one active circuit element; and
,wake-up circuit means (66) for discriminating said received wake-up signal having said predetermined characteristic pulse pattern, and in response, switching the receiver means from the sleep state to the operational state, wherein; said wireless communication is an intracorporeal communication of electrical pulses conducted by the interstitial tissues of a patient'"'"'s body; and the wake-up circuit means comprises a detector circuit (74, 84) and a hysteresis comparator (76, 88). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An autonomous active implantable medical device having wireless communications with a remote active medical device, having a receiver device comprising:
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an energy source; at least one active circuit element; a pair of electrodes (22′
, 24′
), anda receiver means (50) for collecting a signal at said pair of electrodes and processing said received signal to identify therein a wake-up signal and a received modulated pulse train, said receiver means further comprising means for demodulating said received modulated pulse train into a received pulse train and identifying in said received pulse train a plurality of pulses; means for selectively switching said at least one active circuit element between a sleep state not powered by said energy source (34) and an operational state powered for processing said signal using said at least one active circuit element; and
,wake-up circuit means (66) for discriminating said received signal and identifying therein a first signal having a predetermined characteristic pulse pattern and corresponding to a wake-up signal, and in response, switching the receiver means from the sleep state to the operational state, wherein; said signal further comprises an intracorporeal communication of electrical pulses conducted by the interstitial tissues of a patient'"'"'s body; and the wake-up circuit means further comprises a detector circuit (74, 84) and a hysteresis comparator (76, 88). - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. An active medical device having wireless communication with a remote active medical device, having a transmitter device, comprising:
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a first pair of electrodes, and a transmitter means (40) for generating modulated pulse trains comprising a wake-up plurality of pulses in a series corresponding to a communication to said remote device, and a wake-up signal preceding said pulse train, said wake-up signal having a predetermined characteristic pulse pattern, and for applying said wake-up signal and modulated pulse train pulses said to electrodes (22, 24); wherein said predetermined characteristic pattern further comprises an initial pulse (68) having a high amplitude (Aw) corresponding to the wake-up signal, and wherein said following succession of pulses (70) have lower amplitude (A) than said high amplitude, and wherein said wireless communication is an intracorporeal communication of electrical pulses conducted by the interstitial tissues of a patient'"'"'s body. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34)
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Specification