CONDUCTIVE INTRA-BODY COMMUNICATION FOR IMPLANTABLE MEDICAL DEVICES
First Claim
1. An implantable medical device (10) configured to communicate via electric conductive body tissue comprising:
- a data communication interface (30), anda pulse generator (32),wherein the data communication interface (30) is connected to the pulse generator (32),wherein said pulse generator (32) is configured to generate and deliver forward electrical pulses and reverse electrical pulses, wherein a polarity of the reverse electrical pulses is opposite to the polarity of the forward electrical pulses,wherein said pulsed generator is configured to be controlled by said data communication interface (30), andwherein said data communication interface (30) together with said pulse generator (32) are configured togenerate electrical pulses representing binary digits, wherein a first kind of digits (1 or
0) is represented by an electrical pulse, and a second kind of digit respective of the other type of digits (0 or
1) is represented by a pause between electrical pulses, and,deliver electrical pulses with strictly alternating polarity, such that every other electrical pulse is a reverse electrical pulse of opposite polarity compared to an immediately preceding forward electrical pulse.
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Abstract
An implantable medical device including a data communication interface connected to a pulse generator. The pulse generator generates and delivers forward current pulses and reverse current pulses, wherein a polarity of the reverse current pulses is opposite to the polarity of the forward current pulses. Generates pulses representing binary digits, wherein a first kind of digits (1 or 0) is represented by a current pulse, and a second kind of digit respective of the other type of binary digits (0 or 1) is represented by a pause between current pulses. The data communication interface together with the pulse generator deliver current pulses with strictly alternating polarity such that every other current pulse is a reverse current pulse of opposite polarity compared to an immediately preceding forward current pulse. Thus, every string of current pulse is both, charge balancing and information encoding.
21 Citations
16 Claims
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1. An implantable medical device (10) configured to communicate via electric conductive body tissue comprising:
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a data communication interface (30), and a pulse generator (32), wherein the data communication interface (30) is connected to the pulse generator (32), wherein said pulse generator (32) is configured to generate and deliver forward electrical pulses and reverse electrical pulses, wherein a polarity of the reverse electrical pulses is opposite to the polarity of the forward electrical pulses, wherein said pulsed generator is configured to be controlled by said data communication interface (30), and wherein said data communication interface (30) together with said pulse generator (32) are configured to generate electrical pulses representing binary digits, wherein a first kind of digits (1 or
0) is represented by an electrical pulse, and a second kind of digit respective of the other type of digits (0 or
1) is represented by a pause between electrical pulses, and,deliver electrical pulses with strictly alternating polarity, such that every other electrical pulse is a reverse electrical pulse of opposite polarity compared to an immediately preceding forward electrical pulse. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 16)
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9. A method for data communication via electric conductive body tissue comprising:
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delivering electrical pulses representing binary digits, providing a plurality of time slots, wherein each time slot of said plurality of time slots represents one binary digit, delivering, in a respective time slot of said plurality of time slots, a forward or a reverse electrical pulse id a logical “
1”
is configured to be transmitted in said time slot or delivering no electrical pulse in case a logical “
0”
is to be transmitted in said time slot, and,alternating a polarity of said electrical pulses such that a next logical “
1”
is represented by a current or voltage of opposite polarity than a respective anteceding electrical pulse. - View Dependent Claims (11, 12, 13, 14, 15)
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10. A method for data communication to and from an implantable medical device via electric conductive body tissue comprising:
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generating and delivering forward electrical pulses and reverse electrical pulses, wherein a polarity of the reverse electrical pulses is opposite to the polarity of the forward electrical pulses from a pulse generator (32) connected to and controlled by a data communication interface (32); generating electrical pulses representing binary digits, wherein a first kind of digits (1 or
0) is represented by an electrical pulse, and a second kind of digit respective of the other type of digits (0 or
1) is represented by a pause between electrical pulses, and,delivering electrical pulses with strictly alternating polarity, such that every other electrical pulse is a reverse electrical pulse of opposite polarity compared to an immediately preceding forward electrical pulse.
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Specification