Medtronic Minimed, Inc.

Other

Steve Chow

Alexander S Campbell

Yongbo Wang

Adam S Trock

Linda I Torres

Hsiao-Yu S Kow

David P Lewinski

Thomas Collins

Seth N Kazarians

Jon Spurlin

Steven J Vargas

Michael Ortega

Belinda Lee

Gabor Oroszlan

Nichole R Mattson

Salman Monirabbasi

Juan M Alderete, Jr

Andrew E Weaver

Dmytro Y Sokolovskyy

Stephen T Lin

Bing-Heng Huang

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 to enable input power for the motor and provide a dosage command for operating the motor, and a second control module coupled to the first control module to receive the dosage command and operate the motor using at least a portion of the input power based at least in part on the dosage command. One of the first control module and the second control module detects an anomalous condition, and in response, disables the input power to the motor, stores diagnostic information for the anomalous condition in its internal memory, and automatically resets thereafter.

Error handling in infusion devices with distributed motor control and related operating methods

A fluid infusion device and related operating methods are presented here. An exemplary embodiment of the device includes a drive motor assembly, a force sensor associated with the drive motor assembly, and a reservoir cavity that accommodates fluid reservoirs. An exemplary operating method for the device obtains force measurements for a reservoir seating action of the drive motor assembly, where the force measurements indicate measures of force imparted to the force sensor during the reservoir seating action. The method continues by determining that a vent in the reservoir cavity is blocked, based on an analysis of the force measurements, and by initiating corrective action for the fluid infusion device in response to determining that the vent in the reservoir cavity is blocked.

Detecting blockage of a reservoir cavity during a seating operation of a fluid infusion device

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.

Infusion devices with distributed motor control and related operating methods

A medical therapy system including liquid detection is disclosed. A medical therapy includes a case with an interior and an exterior. Within the interior of the case is the liquid detection system that includes a first electrode set with a first positive electrode and a first negative electrode. The liquid detection system further includes an impedance measurement circuit coupled to the first electrode set to determine impedance values between the first positive electrode and the first negative electrode. A threshold detector compares impedance values between the first electrode set to a first threshold impedance. A microprocessor is programmed to initiate an alarm when measured impedance from the first electrode set is below the first threshold impedance.

Method and system for leakage detection in portable medical devices

Apparatus are provided for infusion devices and related systems and operating methods. An exemplary system includes a motor, a sensing arrangement coupled to the motor to provide output indicative of a detected characteristic of the motor when the sensing arrangement is enabled, and a module coupled to the sensing arrangement to periodically enable the sensing arrangement while the motor is idle and detect potential unintended motion of the motor based on the output from the sensing arrangement while periodically enabling the sensing arrangement. In some embodiments, the motor includes a rotor configured such that its rotation provides translational displacement of a plunger in a fluid reservoir, and the sensing arrangement includes one or more sensors configured to provide output indicative of a detected magnetic field of the rotor magnet.

Detecting unintentional motor motion and infusion device incorporating same

A portable electronic device, such as a fluid infusion device, obtains its operating power from a primary battery and a secondary battery. The primary battery may be a replaceable battery, and the secondary battery may be a rechargeable battery that can be charged with the primary battery under certain conditions. The device utilizes a power management scheme that transitions between the primary battery and/or the secondary battery to prolong the useful life of the primary battery. The device may also generate an intelligent battery life indicator that displays an accurate representation of the remaining life of the primary battery.

Battery life indication techniques for an electronic device

An improved telephone interface device communicatively couples a local telephone set to an inside telephone wire which, in turn, is communicatively coupled to an outside telephone line from a central office of a telephone service provider. The interface device includes an on-hold switch, a ring detector, a tone decoder, and a coupling switch, all of which are coupled to the bridge via an internal signal line and a control computer. The touch tone decoder receives input tone sequences from the bridge, decodes the tone sequence, and outputs a bit signal to the control computer. The on-hold switch is responsive to a command from the control computer, and is operative to maintain the signal line at a first predetermined voltage. The coupling switch communicatively couples the signal line to a node line. When the node line is coupled to the signal line, a user at the local telephone set may communicate with another user in the home, or with an outside user. The detector compares the voltage on the signal line with a plurality of predetermined voltage ranges. If the voltage on the signal line is within a predetermined voltage range, then the comparator outputs a logic high value to the control computer. A local phone connector is communicatively coupled to the local telephone set and to the node line. During intercom operations, DC power is supplied to the local telephone set via an intercom power switch and the local phone connector.

Telephone system and interface device

Growing community of inventors

Northridge, CA, United States of America

Steve Chow