Infusion devices with distributed motor control and related operating methods
First Claim
1. An infusion device comprising:
- a motor operable to deliver fluid to a body of a user;
a driver module coupled to the motor;
a first switching arrangement coupled between the driver module and an energy source;
a second switching arrangement coupled between the driver module and the motor;
a first control module coupled to the first switching arrangement; and
a second control module coupled to the first control module, the driver module, and the second switching arrangement, the first control module operating the first switching arrangement to provide a path for input power from the energy source to the driver module in accordance with a handshaking sequence of communications between the first control module and the second control module and providing a dosage command to the second control module, the second control module operating the second switching arrangement to provide a path for output power from the driver module to the motor in accordance with the handshaking sequence of communications and operating the driver module to deliver the output power comprising a portion of the input power to the motor based at least in part on the dosage command.
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Accused Products
Abstract
Infusion systems, infusion devices, and related operating methods are provided. An exemplary infusion device includes a motor operable to deliver fluid to a body of a user, a first control module, and a second control module. The first control module and the second control module are coupled to one another. The first control module enables input power for the motor in accordance with a handshaking sequence of communications between the first control module and the second control module and provides a dosage command to the second control module, with the second control module operating the motor using the input power based on the dosage command in accordance with the handshaking sequence of communications.
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Citations
17 Claims
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1. An infusion device comprising:
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a motor operable to deliver fluid to a body of a user; a driver module coupled to the motor; a first switching arrangement coupled between the driver module and an energy source; a second switching arrangement coupled between the driver module and the motor; a first control module coupled to the first switching arrangement; and a second control module coupled to the first control module, the driver module, and the second switching arrangement, the first control module operating the first switching arrangement to provide a path for input power from the energy source to the driver module in accordance with a handshaking sequence of communications between the first control module and the second control module and providing a dosage command to the second control module, the second control module operating the second switching arrangement to provide a path for output power from the driver module to the motor in accordance with the handshaking sequence of communications and operating the driver module to deliver the output power comprising a portion of the input power to the motor based at least in part on the dosage command. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An infusion device comprising:
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a motor operable to deliver fluid to a body of a user; a first control module; and a second control module coupled to the first control module, the first control module enabling input power for the motor in accordance with a handshaking sequence of communications between the first control module and the second control module and providing a dosage command to the second control module, the second control module operating the motor using the input power based at least in part on the dosage command in accordance with the handshaking sequence of communications, wherein the first control module automatically disables the input power in accordance with the handshaking sequence of communications after providing the dosage command to the second control module in response to an absence of a completion message from the second control module within a timeout period associated with the dosage command.
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12. A method of operating a motor of an infusion device, the method comprising:
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enabling, by a first control module of the infusion device, input power from an energy source to a driver module coupled between the energy source and the motor in accordance with a first sequence of communications between the first control module and a second control module of the infusion device; after enabling the input power, enabling, by the second control module, output power from the driver module to the motor in accordance with a second sequence of communications between the first control module and the second control module; and after enabling the output power from the driver module, operating the driver module to provide the input power to the motor in accordance with a third sequence of communications between the first control module and the second control module, wherein operating the driver module in accordance with the third sequence of communications comprises the first control module automatically disabling the input power to the driver module in response to an absence of a drive completion message from the second control module. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification