Medical device temperature estimation

• Main Authors: Fehrmann, Elizabeth A, Jackson, Jadin C, Gaddam, Venkat R, Olson, David P, Paralikar, Kunal, Morgan, Boysie
• Format: Patent
• Language: English
• Published: 04.02.2020
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; DIAGNOSIS; ELECTRICITY; ELECTROTHERAPY; GENERATION; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MAGNETOTHERAPY; MEASURING; MEASURING QUANTITY OF HEAT; MEASURING TEMPERATURE; MEDICAL OR VETERINARY SCIENCE; PHYSICS; RADIATION THERAPY; SURGERY; SYSTEMS FOR STORING ELECTRIC ENERGY; TESTING; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR; ULTRASOUND THERAPY

Devices, systems, and techniques for monitoring the temperature of a device used to charge a rechargeable power source are disclosed. Implantable medical devices may include a rechargeable power source that can be transcutaneously charged. The temperature of an external charging device and/or an implantable medical device may be monitored to control the temperature exposure to patient tissue during a charging session used to recharge the rechargeable power source. In one example, a temperature sensor may sense a temperature of an internal portion of a device, wherein the housing of the device is not directly thermally coupled to the temperature sensor. A temperature for the housing of the device may then be estimated based on the sensed temperature provided by the non-thermally coupled temperature sensor. A processor may then control charging of the rechargeable power source based on the determined temperature for the housing.