Dexcom Patente

The present invention relates generally to systems and methods for processing, transmitting, and displaying data received from continuous analyte sensor 10, such as a glucose sensor. In some embodiments, the continuous analyte sensor system 8 comprises a sensor electronics module 12 that includes power saving features. One feature includes a low power measurement circuit that can be switched between a measurement mode and a low power mode, in which charging circuitry continues to apply power to electrodes of a sensor during the low power mode. In addition, the sensor electronics module can be switched between in a low power storage mode higher power operational mode via a switch. The switch can include a reed switch or optical switch, for example. A validation routine can also be implemented to ensure an interrupt signal sent from the switch is valid. The continuous analyte sensor 10 can be physically connected to a sensor electronics module 12, which is in direct wireless communication with a plurality of different display devices 14, 16, 18, and/or 20.

A system, a method, and a computer program product for providing wearable continuous blood glucose monitoring. In some embodiments, there is provided a method that includes receiving, at a smartwatch, an alert representative of a glucose state of a host-patient coupled to a glucose sensor; detecting, at the smartwatch, a predetermined action indicative of a request to generate a glance view providing an indication of the glucose state of the host-patient; and presenting, at the smartwatch and in response to the detecting, the glance view providing the indication of the glucose state of the host-patient.

Techniques and protocols for enhancing wireless communications between an analyte sensor system and one or more other devices are described. Such techniques may include, for example, dynamic adjustment of transmission power when transmitting invitations, transmitting invitations with alternate (or different) payloads during different invitation periods, a reduction of handshake messages (e.g., client characteristic configuration descriptor (CCCD) messaging), etc. The various enhancements described herein may relate to various aspects of wireless communication protocols, including, for example, authentication, connection protocols, invitation message structure and content, device pairing, data transmission, etc.

This document discusses, among other things, systems and methods to compensate for the effects of temperature on sensors, such as analyte sensor. An example method may include determining a temperature-compensated glucose concentration level by receiving a temperature signal indicative of a temperature parameter of an external component, receiving a glucose signal indicative of an in vivo glucose concentration level, and determining a compensated glucose concentration level based on the glucose signal, the temperature signal, and a delay parameter.

An apparatus includes an analyte sensor, a memory, and a processor. The processor monitors, using the analyte sensor, an analyte of a patient during a time period to obtain measured analyte data for the analyte and monitors other measured sensor data indicative of a physiological state of the patient during the time period. The processor also determines, based on the physiological state of the patient during the time period, expected analyte data for the analyte and determines a correction factor based on the expected analyte data and the measured analyte data. The correction factor is indicative of an error in calibration of the analyte sensor. The processor also determines whether recalibration of the analyte sensor is possible. If recalibration is possible, the processor recalibrates the analyte sensor based on the correction factor, and if recalibration is not possible, the processor recommends, to the patient, to replace the analyte sensor.

Various examples are directed to systems and methods of and using analyte sensors. An example analyte sensor system comprises an analyte sensor and a hardware device in communication with the analyte sensor. The hardware device may be configured to perform operations comprising applying a first bias voltage to the analyte sensor, the first bias voltage less than an operational bias voltage of the analyte sensor, measuring a first current at the analyte sensor when the first bias voltage is applied, and applying a second bias voltage to the analyte sensor. The operations may further comprise measuring a second current at the analyte sensor when the second bias voltage is applied, detecting a plateau bias voltage using the first current and the second current, determining that the plateau bias voltage is less than a plateau bias voltage threshold, and executing a responsive action at the analyte sensor.

A sensor interposer device (102) is provided, comprising: a body (126) that is supported by a set of legs (128) that extend from the body (126) to form a void below the body (126); a sensor guiding structure (138) defining a guiding hole (140) or a guiding opening (151); retaining means (132) for physically retaining a portion (106a) of a sensor (104); and coupling means for electrically coupling the sensor (104) to circuitry.

A system (101) for measuring an analyte concentration in a host comprises a transcutaneous analyte sensor (138); a bottom housing (522); a top housing (520); and sensor electronics (112) configured to connect to the transcutaneous analyte sensor (138). The sensor electronics (112) are configured to be disposed between the bottom housing (522) and the top housing (520). The bottom housing (522) includes a recess (726) with a floor (704), and the floor (704) includes a plurality of locating pins (784, 786), the plurality of locating pins (784, 786) extending upward from the floor (704). The plurality of locating pins (784, 786) are configured to extend into a plurality of holes (794, 796) in a substrate (404). A conductive member (762, 764) is configured to establish electrical connection between the sensor (138) and the sensor electronics (112).

Devices are provided for measurement of an analyte concentration, e.g., glucose in a host. The device can include a continuous analyte sensor 34 configured to generate a signal associated with a concentration of an analyte, a reference electrode 30, and a sensing membrane 32 located over the working electrode 38. The sensing membrane comprises a diffusion resistance domain configured to control a flux of the analyte therethrough. The diffusion resistance domain comprises one or more zwitterionic compounds and a base polymer comprising both hydrophilic and hydrophobic regions.

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