Systems, devices, and methods for wireless communications in analyte monitoring systems

Abstract

Systems, devices and methods are provided that allow for enhanced performance, power efficiency, interoperability, data security and user privacy for in vivo analyte monitoring systems that utilize wireless communications. The in vivo analyte monitoring systems can include a Bluetooth or Bluetooth Low Energy enabled handheld relay device for wirelessly relaying analyte data between a sensor unit device and one or more reader devices. The in vivo analyte monitoring systems can employ advertisement and encryption schemes for wirelessly transmitting data in a manner that allows for improved security, efficiency and privacy.

1 - 240 . (canceled) 
     
     
         241 . An analyte monitoring device, comprising:
 a test strip interface adapted to receive a test strip and output a signal indicative of an analyte level in a fluid sample on the test strip;   a power supply;   processing circuitry coupled with the test strip interface; and   power latch circuitry coupled with the power supply and the test strip interface, wherein the power latch circuitry is adapted to detect the insertion of the test strip into the test strip interface and, in response to detection, connect the power supply to the processing circuitry.   
     
     
         242 . The analyte monitoring device of  claim 241 , wherein the processing circuitry is adapted to transition from a first power state to a relatively higher power state after connection of the power supply. 
     
     
         243 . The analyte monitoring device of  claim 242 , wherein the power latch circuitry is adapted to, upon receipt of an indication from the processing circuitry, maintain the connection of the power supply to the processing circuitry after removal of the test strip from the test strip interface. 
     
     
         244 . The analyte monitoring device of  claim 243 , wherein the power latch circuitry is adapted to connect the power supply to a power distribution node connected to the processing circuitry, whereby the power supply is connected to the processing circuitry. 
     
     
         245 . The analyte monitoring device of  claim 244 , wherein the test strip interface comprises analog front end circuitry connected to the power distribution node, whereby connection of the power supply to the power distribution node connects the power supply to the analog front end circuitry. 
     
     
         246 . The analyte monitoring device of  claim 244 , further comprising wireless communication circuitry coupled to the power distribution node, wherein the wireless communication circuitry is adapted to attempt to establish a wireless communication link with another device after connection of the power supply to the power distribution node. 
     
     
         247 . The analyte monitoring device of  claim 246 , wherein the processing circuitry is adapted to cause the wireless communication circuitry to attempt establishment of the wireless communication link after connection of the power supply to the power distribution node. 
     
     
         248 . The analyte monitoring device of  claim 241 , wherein the power latch circuitry comprises:
 a first transistor coupled with the test strip interface and adapted to activate upon insertion of the test strip and permit the supply of power from the power supply through the first transistor to the processing circuitry, the first transistor being adapted to deactivate to prevent the supply of power from the power supply to the processing circuitry; and   a second transistor coupled with the first transistor and activatable to maintain the first transistor in an activated state after removal of the test strip from the test strip interface.   
     
     
         249 . The analyte monitoring device of  claim 248 , wherein the second transistor is adapted to activate upon receipt of a first indication from the processing circuitry, and adapted to deactivate upon receipt of a second indication from the processing circuitry, wherein deactivation of the second transistor causes the first transistor to deactivate and prevent the supply of power from the power supply to the processing circuitry. 
     
     
         250 . A method of operating an analyte monitoring device, comprising:
 detecting, by power latch circuitry of the analyte monitoring device, insertion of a test strip into a test strip interface, wherein the test strip interface is adapted to output a signal indicative of an analyte level in a fluid sample on the test strip; and   connecting, by the power latch circuitry, a power supply to processing circuitry of the analyte monitoring device in response to detection of the insertion of the test strip.   
     
     
         251 . The method of  claim 250 , comprising transitioning the processing circuitry from a power-off or low power state to a relatively higher power state after connection of the power supply. 
     
     
         252 . The method of  claim 251 , comprising receiving, by the power latch circuitry, an indication from the processing circuitry to maintain the connection of the power supply to the processing circuitry after removal of the test strip from the test strip interface. 
     
     
         253 . The method of  claim 252 , comprising maintaining the connection of the power supply to the processing circuitry after removal of the test strip from the test strip interface. 
     
     
         254 . The method of  claim 243 , wherein connecting the power supply to processing circuitry comprises connecting the power supply to a power distribution node connected to the processing circuitry. 
     
     
         255 . The method of  claim 254 , wherein the analyte monitoring device comprises analog front end circuitry connected to the power distribution node, wherein connecting the power supply to the power distribution node connects the power supply to the analog front end circuitry. 
     
     
         256 . The method of  claim 254 , wherein the analyte monitoring device further comprises wireless communication circuitry coupled to the power distribution node, wherein connecting the power supply to the power distribution node connects the power supply to the wireless communication circuitry, the method comprising transmitting, by the wireless communication circuitry, an attempt to establish a wireless communication link after connection of the power supply to the power distribution node. 
     
     
         257 . The method of  claim 256 , further comprising causing, by the processing circuitry, the wireless communication circuitry to transmit the attempt to establish the wireless communication link after connection of the power supply to the power distribution node. 
     
     
         258 . The method of  claim 250 , wherein the power latch circuitry comprises a first transistor coupled with the test strip interface and a second transistor coupled with the first transistor, wherein connecting the power supply to the processing circuitry comprises:
 activating the first transistor to permit the supply of power from the power supply through the first transistor to the processing circuitry.   
     
     
         259 . The method of  claim 258 , further comprising activating the second transistor upon receipt of a first indication from the processing circuitry, wherein activation of the second transistor maintains activation of the first transistor after removal of the test strip from the test strip interface.