Abstract: Methods and systems for closed loop feedback control of electrical neuromodulation are described. Closed loop feedback control is based on sensed electrical potentials, which are used as reference control variables in a feedback control algorithm to adjust the electrical stimulation based on one or more control algorithm parameters. The performance of the closed loop feedback control algorithm may be evaluated, and the feedback algorithm may be adjusted based on its performance. In some instances, the feedback algorithm may be adjusted based on an indication state of the patient.

Abstract: A system may include a user device, a clinician programmer and an implantable medical device. A first security protocol may be used to establish a first encrypted communication channel between the clinician programmer and the user device through cloud server(s). The first security protocol may authenticate entities and establish a first key set for encrypting and decrypting messages transmitted within the first encrypted communication channel. The user device and the implantable medical device may be configured to wirelessly communicate with each other through a secure wireless connection. A second security protocol may be used to establish a second encrypted communication channel, by establishing at least a first secret key, at least partially within the first encrypted communication channel. The second encrypted communication channel may extend between the implantable medical device and the clinician programmer. The first encrypted messages wrap the second encrypted messages.

Abstract: An external device for wireless communication with an implantable medical device can include a memory having stored thereon instructions for a first application and authentication credentials specific to the first application; and a processor configured for transmitting the authentication credentials specific to the first application to an implantable medical device to authorize access to the implantable medical device by the first application.