Ambulatory medical device with electrical isolation from connected peripheral device
First Claim
1. An ambulatory medical device connectable to a peripheral device via an active communication cable, the ambulatory medical device comprising:
- a housing sized and configured to be ambulatory for a patient and presenting a communication connector configured to interface with the active communication cable;
a fluid conduit configured to extend between the housing and the patient;
a battery carried by the housing that provides electrical power for the device and has a battery ground;
first circuitry housed within the housing and electrically connected to the battery ground, the first circuitry including;
a first isolator transceiver adapted to communicate at least one control signal;
a first giant magneto-resistive (GMR) isolator transceiver adapted to communicate at least one electrical data signal; and
control circuitry for the device having a communication port connected to the first isolator transceiver and the first GMR isolator transceiver to communicate the at least one control signal and the at least one data signal to and from the control circuitry; and
second circuitry housed within the housing and electrically connected to a cable ground signal on the active communication cable via the communication connector, the second circuitry including;
a second isolator transceiver coupled to the first isolator transceiver and adapted to communicate the at least one control signal;
a second GMR isolator transceiver magnetically coupled to the first GMR isolator transceiver and adapted to communicate the at least one data signal; and
communication circuitry electrically coupled to the communication connector and to the second isolator transceiver and the second GMR isolator transceiver to communicate the at least one data signal to and from the active communication cable, such that the first circuitry and the patient are isolated from the second circuitry and the peripheral device.
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Accused Products
Abstract
Methods and apparatus are provided for electrically isolating an ambulatory medical device for infusing treatment materials into a patient when the medical device is connected to a peripheral device via an active communication cable. In one embodiment, the ambulatory medical device include first circuitry controlling infusion of a medicament to the patient by a fluid conduit connectable to the patient and second circuitry controlling communications when an active communication cable is connected to the medical device. The first and second circuitry are electrically isolated using a pair of first and second isolation transceivers, where the first pair of isolation transceivers communicate a control signal and the second pair of isolation transceivers are giant magneto-resistive (GMR) transceivers that communicate at least one data signal.
36 Citations
11 Claims
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1. An ambulatory medical device connectable to a peripheral device via an active communication cable, the ambulatory medical device comprising:
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a housing sized and configured to be ambulatory for a patient and presenting a communication connector configured to interface with the active communication cable; a fluid conduit configured to extend between the housing and the patient; a battery carried by the housing that provides electrical power for the device and has a battery ground; first circuitry housed within the housing and electrically connected to the battery ground, the first circuitry including; a first isolator transceiver adapted to communicate at least one control signal; a first giant magneto-resistive (GMR) isolator transceiver adapted to communicate at least one electrical data signal; and control circuitry for the device having a communication port connected to the first isolator transceiver and the first GMR isolator transceiver to communicate the at least one control signal and the at least one data signal to and from the control circuitry; and second circuitry housed within the housing and electrically connected to a cable ground signal on the active communication cable via the communication connector, the second circuitry including; a second isolator transceiver coupled to the first isolator transceiver and adapted to communicate the at least one control signal; a second GMR isolator transceiver magnetically coupled to the first GMR isolator transceiver and adapted to communicate the at least one data signal; and communication circuitry electrically coupled to the communication connector and to the second isolator transceiver and the second GMR isolator transceiver to communicate the at least one data signal to and from the active communication cable, such that the first circuitry and the patient are isolated from the second circuitry and the peripheral device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of electrically isolating a communication of an ambulatory medical device that is connectable to a peripheral device via an active communication cable, comprising:
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providing an ambulatory medical device having a housing containing a communication connector configured to interface with an active communication cable;
a battery;
a first circuitry housed within the housing and electrically connected to the battery ground, the first circuitry comprising a first isolator transceiver adapted to communicate at least one control signal, a first GMR isolator transceiver adapted to communicate at least one electrical data signal, and a control circuitry for the device having a communication port connected to the first isolator transceiver and the first GMR isolator transceiver to communicate the at least one control signal and the at least one data signal to and from the control circuitry; and
a second circuitry housed within the housing and electrically connected to a cable ground signal on the active communication cable via the communication connector, the second circuitry comprising a second isolator transceiver coupled to the first isolator transceiver and adapted to communicate the at least one control signal, a second GMR isolator transceiver magnetically coupled to the first GMR isolator transceiver and adapted to communicate the at least one data signal, and a communication circuitry electrically coupled to the communication connector and to the second isolator transceiver and the second GMR isolator transceiver to communicate the at least one data signal to and from the active communication cable, such that the first circuitry and the patient are isolated from the second circuitry and the peripheral device, the ambulatory medical device further having a fluid conduit configured to extend between the housing and the patient, andproviding instructions to couple the active communication cable to the communication connector of the medical device and initiate a data transfer between the medical device and the peripheral device such that the first circuitry and the patient are isolated from the second circuitry and the peripheral device while the active communication cable is connected and the data transfer can occur at a data transfer rate of at least 12 Mb/second.
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Specification