Pairing a medical apparatus with a control unit

US10420879B2 · kind B2 · utility

Assignee

• Roche Diabetes Care, Inc. · US

Inventors

• Wolfgang Heck · Bischofswerda, DE
• Kai-Oliver Schwenker · Haßloch, DE
• Ralf Schmitz · Frankfurt am Main, DE
• Volker Zeuner · Biblis, DE
• Carsten Mueglitz · Sonneberg, DE
• Thomas Eissenloeffel · Heidelberg, DE
• Christian-Alexander Luszick · Ludwigshafen, DE

Key dates

• Filing date: Dec 7, 2015
• Grant date: Sep 24, 2019
• Expiry date: Nov 25, 2036

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W84/18
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The invention provides for method of operating a medical instrument (100, 200, 400, 500, 600, 700) comprising a battery powered medical appliance (104) and a control unit (102). Both have Bluetooth communication modules. A first memory of the medical appliance contains a onetime password (210) and of a password-authenticated key agreement algorithm (212). The control unit has a second memory (223) with an implementation of the password-authenticated key agreement algorithm (212′). The method comprises entering (300) the onetime password into the data entry interface (140, 221, 504, 604) of the control unit. The method further comprises generating (302) a Bluetooth encryption key (218) by the medical appliance and the control unit with the onetime password by exchanging data across the wireless communication channel by executing the password-authenticated key agreement algorithm. The method further comprises storing (304) the Bluetooth encryption key in the first memory. The method further comprises disabling (306) the password-authenticated key agreement algorithm in the first memory after storing the Bluetooth encryption key in the first memory. The method further comprises storin…