Medical transceiver device and method
First Claim
1. A medical transceiver device for radio-based communication with an implantable medical device comprising;
- circuitry for transmitting radio frequency signals to, and/or receiving radio frequency signals from, said implantable medical device, said radio frequency signals having a wavelength;
first and second dipole antennas each having a structural length;
an antenna feed network operatively interconnected between said circuitry and said first and second dipole antennas;
each of said first and second dipole antennas being operable by said circuitry as a transmitting and/or receiving antenna for said radio frequency signals;
said first and second dipole antennas being operable by said circuitry to emit and/or receive radio waves of different polarizations and thereby exhibiting polarization diversity; and
said first and second dipole antennas being adjacent to each other at substantially a single location in space at a distance from each other of a size that is no larger than one-sixteenth of said wavelength, said size of said distance giving said first and second dipole antennas substantially no spatial diversity.
1 Assignment
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Accused Products
Abstract
A medical transceiver device for radio-based communication with an implantable medical device has circuitry for transmitting radio-frequency signals to, and/or receiving radio-frequency signals from, the implantable medical device, first and second electrically conductive structures, and an antenna feed network operatively interconnected between the circuitry and the first and second conductive structures. Each of the first and second conductive structures is operable as a transmitting and/or receiving antenna for the radio-frequency signals. The first and second conductive structures emit and/or receive radio waves of different polarizations, and the first and second conductive structures are disposed adjacent each other at a single location in space, thereby providing spatial diversity that is independent of the polarization diversity.
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Citations
41 Claims
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1. A medical transceiver device for radio-based communication with an implantable medical device comprising;
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circuitry for transmitting radio frequency signals to, and/or receiving radio frequency signals from, said implantable medical device, said radio frequency signals having a wavelength; first and second dipole antennas each having a structural length; an antenna feed network operatively interconnected between said circuitry and said first and second dipole antennas; each of said first and second dipole antennas being operable by said circuitry as a transmitting and/or receiving antenna for said radio frequency signals; said first and second dipole antennas being operable by said circuitry to emit and/or receive radio waves of different polarizations and thereby exhibiting polarization diversity; and said first and second dipole antennas being adjacent to each other at substantially a single location in space at a distance from each other of a size that is no larger than one-sixteenth of said wavelength, said size of said distance giving said first and second dipole antennas substantially no spatial diversity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A method for radio-based communication with an implantable medical device comprising the steps of:
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receiving radio frequency signals from an implantable medical device via first and second antenna structures that are maximally sensitive to radio waves of different polarizations and operable adjacent each other at substantially a single location in space, each of said antenna structures having a structural length, and said radio waves having a wavelength; at said substantially single location in space, placing said antenna structures at a distance from each other of a size that is no larger than either said structural length or one-quarter of said wavelength and thereby giving said first and second antenna structures a spatial diversity that is independent of said sensitivity to radio waves of different polarizations; analyzing said radio frequency signals received via said first and second antenna structures; from said analysis, determining a polarization state of said radio frequency signals received via said first and second antenna structures; transmitting radio frequency signals to said implantable medical device via said first and second antenna structures; and selecting at least one of an amplitude or a phase of said radio frequency signals transmitted via said first antenna structure relative to the amplitude or phase of said radio frequency signals transmitted via said second antenna structure depending on said determined polarization state.
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33. A medical transceiver device for radio-based communication with an implantable medical device comprising:
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circuitry for transmitting radio frequency signals to, and/or receiving radio frequency signals from, said implantable medical device; first and second dipole antennas; an antenna feed network operatively interconnected between said circuitry and said first and second dipole antennas; each of said first and second dipole antennas being operable with said circuitry as a transmitting and/or receiving antenna for said radio frequency signals; said first and second dipole antennas being operable by said circuitry to emit and/or receive radio waves of different polarizations and thereby exhibiting polarization diversity; and said first and second dipole antennas being separated by a distance that is less than a maximum length of either one of said first and second dipole antennas, said distance giving said first and second dipole antennas substantially no spatial diversity.
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34. A medical transceiver device for radio-based communication with an implantable medical device comprising:
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circuitry for transmitting radio frequency signals to, and/or receiving radio frequency signals from, said implantable medical device, said radio frequency signals having a wavelength; first and second dipole antennas; an antenna feed network operatively interconnected between said circuitry and said first and second dipole antennas; each of said first and second dipole antennas being operable by said circuitry as a, transmitting and/or receiving antenna for said radio frequency signals; said first and second dipole antennas being operable by said circuitry to emit and/or receive radio waves of different polarizations; and said first and second dipole antennas being separated by a distance that is less than one-sixteenth of the wavelength of said radio frequency signals, said distance giving said dipole antennas substantially no spatial diversity.
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35. A medical transceiver device for radio-based communication with an implantable medical device comprising:
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circuitry for transmitting radio frequency signals to, and/or receiving radio frequency signals from, said implantable medical device; first and second dipole antennas; an antenna feed network operatively interconnected between said circuitry and said first and second dipole antennas; each of said first and second dipole antennas being operable by said circuitry as a transmitting and/or receiving antenna for said radio frequency signals; each of said first and second dipole antennas comprising two elongated elements parallel with each other; and said first and second dipole antennas being arranged at a distance there between in a crossed relationship, essentially orthogonally to each other, said distance and said crossed relationship giving said first and second dipole antennas polarization diversity and substantially no spatial diversity. - View Dependent Claims (36, 37, 38)
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39. A medical communication system comprising:
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an extracorporeal device selected from the group consisting of programmers and patient monitoring devices; an implantable medical device comprising a radio transmitter and/or receiver; and a medical transceiver device in said extracorporeal device, said medical transceiver device comprising circuitry for transmitting radio frequency signals, having a wavelength, to, and/or receiving radio frequency signals from, said implantable medical device, first and second dipole antennas—
each having a structural length, an antenna feed network operatively interconnected between said circuitry and said first and second dipole antennas, each of said first and second dipole antennas being operable by said circuitry as a transmitting and/or receiving antenna for said radio frequency signals, said first and second dipole antennas being operable with said circuitry to emit and/or receive radio waves of different polarizations and thereby exhibiting polarization diversity, and said first and second dipole antennas being adjacent to each other substantially at a single location in space at a fixed distance from each other of a size that is no larger than one-sixteenth of said wavelength, said size of said distance giving said dipole antennas substantially no spatial. - View Dependent Claims (40, 41)
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Specification