Base units, transmitter units, wearable devices, and methods of continuous analyte monitoring

Inventors

Avirovikj, Dragan • Gofman, Igor Y. • Young, Cameron M. • Li, Ji • Mayer, JR., Thomas A. J.

Assignees

Ascensia Diabetes Care Holdings AG

Abstract

A base unit of a wearable device for continuous analyte monitoring includes a cup configured to receive a power source. A first power source contact is at least partially located in the cup and configured to electrically contact a first terminal of the power source in response to the power source being received in the cup. At least one base contact is electrically coupled to the first power source contact, the at least one base contact configured to electrically contact at least one transmitter contact of a transmitter unit in response to the transmitter unit and the base unit being coupled together. Numerous other embodiments are provided.

Core Innovation

The disclosure describes a continuous analyte monitoring wearable architecture having a reusable transmitter unit and a replaceable base unit that receives a power source in a cup. The cup includes one or more spring contacts and a rim at least partially encircling the cup, where the spring contacts and the rim are configured to secure the power source within the cup. A first power source contact is at least partially located in the cup and is configured to electrically contact a first terminal of the power source when the power source is received in the cup.

Electrical power transfer is tied to coupling between units. Base contacts are electrically coupled to the power source contact and are configured to electrically contact transmitter contacts of the transmitter unit in response to the transmitter unit and the base unit being coupled together. The disclosure also describes the battery only becoming electrically connected upon coupling, thereby preventing drainage, together with mechanically robust retention structures such as retainer rings and tabs/openings that engage between the base unit and the transmitter unit.

The base unit is also described as providing a structural interface for a biosensor and its subcutaneous placement. The base includes a tube and associated tube passage or opening for subcutaneous biosensor insertion, including an inserter assembly and trocar arrangement described in the disclosure. The disclosure additionally describes electron beam sterilization compatibility up to 25 KGy and encapsulation and molding or overmolding conditions while leaving base contacts exposed.

Claims Coverage

The partial content provides independent claims covering a base unit, a wearable device, and a manufacturing method, with the core inventive features centered on securing a power source in a cup using spring contacts and a rim, and establishing electrical coupling to a transmitter unit via base and transmitter contacts when the units are coupled. Additional independent coverage includes a transmitter recess in which the battery supplies all power, and a base tube/insertion interface with contacts arranged around the tube perimeter.

Across the independent claims, coverage focuses on a base unit for a continuous analyte monitoring wearable that secures a power source in a cup using spring contacts and a rim, establishes electrical contact to power terminals via a power-source contact located in the cup, and transfers power to a transmitter unit through base contacts that electrically contact transmitter contacts when the base unit and transmitter unit are coupled. Additional independent coverage includes a transmitter recess where the battery supplies all power, and a base tube or insertion interface where base contacts are arranged around the tube perimeter to contact transmitter conductors.

Stated Advantages

Documented Applications