Telemetry system for implantable medical devices
First Claim
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1. An external device for use in communication with an implantable medical device, comprising:
- a device controller;
a housing;
an antenna array mounted to the housing;
an RF transceiver operating at defined frequency, coupled to the antenna array;
means for encoding signals to be transmitted to the implantable device, coupled to an input of the transceiver;
means for decoding signals received from the implantable device, coupled to an output of the transceiver; and
means for displaying the decoded signals received from the implantable device;
wherein the antenna array comprises two antennas spaced a fraction of the wavelength of the defined frequency from one another, each antenna comprising two antenna elements mounted to the housing and located orthogonal to one another; and
wherein the device controller includes means for selecting which of the two antennas is coupled to the transceiver.
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Abstract
A device for use in communication with an implantable medical device. The device is provided with a spatial diversity antenna array mounted to a housing and an RF transceiver operating at defined frequency, coupled to the antenna alray. The antenna array comprises two antennas spaced a fraction of the wavelength of the defined frequency from one another, each antenna including two antenna elements mounted to the housing and located oithogonal to one another. Selection of which of the antennas is employed is accomplished by an device controller, responsive to the quality of the signals received by the antennas.
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Citations
30 Claims
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1. An external device for use in communication with an implantable medical device, comprising:
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a device controller;
a housing;
an antenna array mounted to the housing;
an RF transceiver operating at defined frequency, coupled to the antenna array;
means for encoding signals to be transmitted to the implantable device, coupled to an input of the transceiver;
means for decoding signals received from the implantable device, coupled to an output of the transceiver; and
means for displaying the decoded signals received from the implantable device;
wherein the antenna array comprises two antennas spaced a fraction of the wavelength of the defined frequency from one another, each antenna comprising two antenna elements mounted to the housing and located orthogonal to one another; and
wherein the device controller includes means for selecting which of the two antennas is coupled to the transceiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system comprising an external device and an associated implantable device, wherein the external device comprises:
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a device controller;
a housing;
an antenna array mounted to the housing;
an RF transceiver operating at defined frequency, coupled to the antenna array;
means for encoding signals to be transmitted to the implantable device, coupled to an input of the transceiver;
means for decoding signals received from the implantable device, coupled to an output of the transceiver; and
means for displaying the decoded signals received from the implantable device, mounted to the housing;
wherein the antenna array comprises two antennas spaced a fraction of the wavelength of the defined frequency from one another, each antenna comprising two antenna elements mounted to the housing and located orthogonal to one another; and
wherein the device controller includes means for selecting which of the two antennas is coupled to the transceiver; and
wherein the implantable device comprises;
a hermetic housing;
a transceiver mounted within the hermetic housing;
a first feedthrough, mounted to the housing and coupled to the transceiver; and
an implantable antenna located external to the housing and coupled to the first feedthrough, the implantable antenna comprising a length of insulated conductor extending from the first feedthrough. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification