Self-powered analyte sensor and devices using the same

Abstract

Systems, devices and methods to monitoring analyte levels using a self-powered analyte sensor and associated sensor electronics are provided.

1 . An analyte monitoring device, comprising:
 a self-powered analyte sensor; and   sensor electronics operatively coupled to the self-powered analyte sensor configured to receive signals generated by the self-powered analyte sensor and to communicate data corresponding to analyte level monitored by the self-powered analyte sensor;   wherein the sensor electronics transitions from an inactive state to an active state when powered by a remote power source and upon receipt of a query signal from the remote power source, and in response to the query signal, communicates data corresponding to the generated signals associated with the monitored analyte level to the remote power source.   
     
     
         2 . The device of  claim 1 , wherein the self-powered analyte sensor is configured to continuously generate the signals corresponding to the monitored analyte level when in fluid contact with interstitial fluid. 
     
     
         3 . The device of  claim 1 , wherein the self-powered analyte sensor generates the signals corresponding to the monitored analyte level when the sensor electronics are in the inactive state. 
     
     
         4 . The device of  claim 1 , wherein the sensor electronics are not operational when in the inactive state. 
     
     
         5 . The device of  claim 1 , wherein the sensor electronics includes a buffering circuit operatively coupled to the self-powered analyte sensor for receiving the generated signals from the self-powered analyte sensor. 
     
     
         6 . The device of  claim 5 , wherein the sensor electronics includes a radio frequency identification device (RFID) circuit operatively coupled to the buffering circuit and configured to communicate the data corresponding to the generated signals associated with the monitored analyte level. 
     
     
         7 . The device of  claim 1 , further comprising a housing enclosing the self-powered analyte sensor and the sensor electronics, wherein the housing is sealed to inhibit moisture from entering the housing. 
     
     
         8 . The device of  claim 1 , wherein the query signal includes an RFID signal. 
     
     
         9 . The device of  claim 1 , wherein the sensor electronics transitions from the active state to the inactive state when the sensor electronics is not within the range of the remote power source. 
     
     
         10 . The device of  claim 1 , wherein the self-powered analyte sensor is configured to generate the signals when in contact with interstitial fluid and when the sensor electronics is in the inactive state. 
     
     
         11 . The device of  claim 1 , further comprising a housing enclosing the self-powered analyte sensor and the sensor electronics, the housing including one or more mechanical components for physically detachably engaging with a remote device. 
     
     
         12 . The device of  claim 11 , wherein the remote device includes the remote power source. 
     
     
         13 . The device of  claim 11 , wherein the one or more mechanical components includes one or more of a releasable latch, a releasable arm, or a releasable lock. 
     
     
         14 . An analyte monitoring device, comprising:
 a self-powered analyte sensor having at least a portion in fluid contact with interstitial fluid under a skin surface; and   sensor electronics operatively coupled to the self-powered analyte sensor configured to receive signals generated by the self-powered analyte sensor and to communicate data corresponding to analyte level monitored by the self-powered analyte sensor, the sensor electronics including:   a buffering circuit operatively coupled to the self-powered analyte sensor for receiving the generated signals from the self-powered analyte sensor; and   a radio frequency identification device (RFID) circuit operatively coupled to the buffering circuit and configured to communicate data corresponding to the generated signals associated with the monitored analyte level;   wherein the sensor electronics transitions from an inactive state to an active state when powered by a remote power source and upon receipt of a query signal from the remote power source, and in response to the query signal, communicates the data corresponding to the generated signals associated with the monitored analyte level to the remote power source.   
     
     
         15 . The device of  claim 14 , further comprising a housing enclosing the self-powered analyte sensor and the sensor electronics, wherein the housing is sealed to inhibit moisture from entering the housing. 
     
     
         16 . The device of  claim 14 , wherein the query signal includes an RFID signal. 
     
     
         17 . The device of  claim 14 , wherein the sensor electronics transitions from the active state to the inactive state when the sensor electronics is not within the range of the remote power source. 
     
     
         18 . The device of  claim 14 , wherein the self-powered analyte sensor is configured to generate the signals when in contact with the interstitial fluid and when the sensor electronics is in the inactive state. 
     
     
         19 . The device of  claim 14 , further comprising a housing enclosing the self-powered analyte sensor and the sensor electronics, the housing including one or more mechanical components for physically detachably engaging with a remote device. 
     
     
         20 . The device of  claim 19 , wherein the remote device includes the remote power source. 
     
     
         21 . The device of  claim 19 , wherein the one or more mechanical components includes one or more of a releasable latch, a releasable arm, or a releasable lock. 
     
     
         22 . An analyte monitoring device, comprising:
 a self-powered analyte sensor having at least a portion in fluid contact with interstitial fluid under a skin surface; and   sensor electronics operatively coupled to the self-powered analyte sensor, configured to receive signals generated by the self-powered analyte sensor, and to communicate data corresponding to analyte level monitored by the self-powered analyte sensor, the sensor electronics including:
 a buffering circuit operatively coupled to the self-powered analyte sensor for receiving the generated signals from the self-powered analyte sensor; and 
 a radio frequency identification device (RFID) circuit operatively coupled to the buffering circuit and configured to communicate data corresponding to the generated signals associated with the monitored analyte level. 
   
     
     
         23 . The device of  claim 22 , further comprising a housing enclosing the self-powered analyte sensor and the sensor electronics, wherein the housing is sealed to inhibit moisture from entering the housing. 
     
     
         24 . The device of  claim 22 , wherein the sensor electronics transitions from an active state to an inactive state when the sensor electronics is not within the range of a remote power source. 
     
     
         25 . The device of  claim 22 , wherein the self-powered analyte sensor is configured to generate the signals when in contact with the interstitial fluid and when the sensor electronics is in the inactive state. 
     
     
         26 . The device of  claim 1 , wherein the sensor electronics are configured to periodically communicate the data corresponding to the generated signals in response to receiving, at a predetermined time interval, the query signal from the remote power source. 
     
     
         27 . The device of  claim 14 , wherein the sensor electronics are configured to periodically communicate the data corresponding to the generated signals in response to receiving, at a predetermined time interval, the query signal from the remote power source. 
     
     
         28 . The device of  claim 22 , wherein the sensor electronics are further configured to periodically communicate the data corresponding to the analyte level to a remote power source in response to receiving, at a predetermined time interval, a query signal from the remote power source.