Abstract: A method of monitoring an internal body temperature of a patient includes detecting a skin temperature of the patient using a temperature sensor in a body-mountable temperature monitor attached to the patient; calculating, using the temperature sensor, a heat flux associated with the body-mountable temperature monitor based on selectively activating a heater in the body-mountable temperature monitor; and determining the internal body temperature of the patient using the skin temperature and the heat flux.

Abstract: An example sensor interposer employing castellated through-vias formed in a PCB includes a planar substrate defining a plurality of castellated through-vias; a first electrical contact formed on the planar substrate and electrically coupled to a first castellated through-via; a second electrical contact formed on the planar substrate and electrically coupled to a second castellated through-via, the second castellated through-via electrically isolated from the first castellated through-via; and a guard trace formed on the planar substrate, the guard trace having a first portion formed on a first surface of the planar substrate and electrically coupling a third castellated through-via to a fourth castellated through-via, the guard trace having a second portion formed on a second surface of the planar substrate and electrically coupling the third castellated through-via to the fourth castellated through-via, the guard trace formed between the first and second electrical contacts to provide electrical isolation b

Abstract: Introduced here is an attachable unit that connects to a base unit through a snap-fitting mechanism. The attachable unit can include a top housing structure and a bottom housing structure that are ultrasonically welded together. The top housing structure can include the toe portion that is integral with remaining portions of the top housing structure, where the toe portion is configured to provide the snap-fit with the base unit.

Abstract: A dosage measurement system is adapted to receive a motion from a dosage injection mechanism disposed within a drug injection pen. The dosage measurement system includes a substrate, a sensing capacitor disposed on the substrate, and a lifting tab. The sensing capacitor includes a dielectric layer disposed between a base plate and an adjustable plate. The lifting tab is attached to the adjustable plate and positioned to engage an undulation pattern disposed on a component attached to the dosage injection mechanism. The lifting tab is adapted to physically change a separation distance between the adjustable plate and the base plate in a reciprocal manner in response to the motion of the dosage injection mechanism and engagement with the undulation pattern. A capacitance of the sensing capacitor changes in response to the engagement of the lifting tab with the undulation pattern and the motion of the dosage injection mechanism.

Abstract: A method is disclosed that includes removing an adhesive layer from a lower housing of a monitoring device; aligning the monitoring device with an opening of an adhesive applicator; coupling an uppermost adhesive layer that is positioned within the adhesive applicator with the lower housing; and removing the monitoring device from the opening of the adhesive applicator. A shape of the lower housing of the monitor corresponds to the shape of the opening of the adhesive applicator; and aligning the monitoring device with the opening of the adhesive applicator comprises matching the orientation of the lower housing to the orientation of the opening in the adhesive applicator. The method also includes the monitoring device selectively entering a battery preservation mode.

Abstract: Various methods and devices for reducing the time for a body-mountable temperature monitoring device to provide an accurate body temperature are disclosed. Methods are used to accurately predict the measured temperature once the monitoring device reaches thermal equilibrium. For example, in one embodiment, a method for measuring body temperature of a subject includes obtaining, by a temperature monitor attached to a body of the subject, a plurality of body temperature measurements at a plurality of times, determining parameters of a model used for predicting temperature based on the plurality of measurements, predicting a body temperature of the subject based on the model, and outputting the predicted body temperature as a current temperature reading.

Abstract: An example sensor interposer employing castellated through-vias formed in a PCB includes a planar substrate defining a plurality of castellated through-vias; a first electrical contact formed on the planar substrate and electrically coupled to a first castellated through-via; a second electrical contact formed on the planar substrate and electrically coupled to a second castellated through-via, the second castellated through-via electrically isolated from the first castellated through-via; and a guard trace formed on the planar substrate, the guard trace having a first portion formed on a first surface of the planar substrate and electrically coupling a third castellated through-via to a fourth castellated through-via, the guard trace having a second portion formed on a second surface of the planar substrate and electrically coupling the third castellated through-via to the fourth castellated through-via, the guard trace formed between the first and second electrical contacts to provide electrical isolation b

Abstract: The technology described herein relates to body mountable thermal coupling devices and, more specifically, to body mountable thermal coupling apparatuses with resistance to varying ambient conditions. In some implementations, a body mountable thermal coupling apparatus is disclosed. The apparatus includes a bio-compatible thermally conductive metal disc, a substrate, a thermal sensor, an enclosure, and an adhesive patch. The described apparatus facilitates enhanced thermal coupling between a heat source, e.g., human skin, and a thermal (or temperature) sensor.

Abstract: Various examples are described for needle alignment for wearable biosensors. One example device includes a housing comprising an upper portion and a lower portion, the housing defining a cavity between the upper portion and the lower portion and configured to be worn on a wearer's skin, wherein: the upper portion defines a first opening extending through the upper portion to the cavity, and the lower portion defines a second opening extending through the lower portion to the cavity, the cavity establishing a substantially unobstructed pathway including the first opening and the second opening to enable an insertion needle to be inserted through the housing; and a needle guide extending into and along a portion of the pathway and aligned with a sensor wire to enable alignment between the insertion needle and the sensor wire.