Transcutaneous analyte sensor systems and methods

Abstract

Systems for applying a transcutaneous monitor to a person can include a telescoping assembly, a sensor, and a base with adhesive to couple the sensor to skin. The sensor can be located within the telescoping assembly while the base protrudes from a distal end of the system. The system can be configured to couple the sensor to the base by compressing the telescoping assembly.

What is claimed is: 
     
         1 . A sensor inserter assembly for applying an on-skin component to a skin of a host, comprising:
 an on-skin component being movable in at least a distal direction from a proximal position to a distal position,   a first securing feature configured to releasably secure the on-skin component in the proximal position,   a second securing feature configured to secure the on-skin component in the distal position, and   a first resistance feature configured to prevent movement of the on-skin component in a proximal direction at least when the on-skin component is in the distal position.   
     
     
         2 . The sensor inserter assembly of  claim 1 , wherein the first resistance feature is configured to prevent movement of the on-skin component in a proximal direction when the on-skin component is secured in the distal position. 
     
     
         3 . The sensor inserter assembly of  claim 1 , wherein the first securing feature is configured to releasably secure the on-skin component to a needle assembly. 
     
     
         4 . The sensor inserter assembly of  claim 2 , wherein the on-skin component comprises a sensor module. 
     
     
         5 . The sensor inserter assembly of  claim 4 , wherein the sensor module comprises a sensor and a plurality of electrical contacts. 
     
     
         6 . The sensor inserter assembly of  claim 5 , wherein the sensor is electrically coupled to at least one of the electrical contacts, at least when the sensor inserter assembly is in the first configuration. 
     
     
         7 . The sensor inserter assembly of  claim 1 , wherein the on-skin component comprises a base. 
     
     
         8 . The sensor inserter assembly of  claim 1 , wherein the on-skin component comprises a transmitter. 
     
     
         9 . The sensor inserter assembly of  claim 1 , wherein the second securing feature is configured to secure the on-skin component to a second on-skin component. 
     
     
         10 . The sensor inserter assembly of  claim 1 , further comprising at least one distally-extending leg, and wherein the first securing feature comprises an adhesive disposed on a distally-facing surface of the leg. 
     
     
         11 . The sensor inserter assembly of  claim 1 , further comprising at least one distally-extending member, and wherein the first securing feature comprises a surface of the distally-extending member configured to frictionally engage with a corresponding structure of the on-skin component. 
     
     
         12 . The sensor inserter assembly of  claim 11 , wherein the distally-extending member comprises at least one leg of the sensor inserter assembly. 
     
     
         13 . The sensor inserter assembly of  claim 11 , wherein the distally-extending member comprises a needle. 
     
     
         14 . The sensor inserter assembly of  claim 1 , wherein the second securing feature comprises an adhesive disposed on a distally-facing surface of the on-skin component. 
     
     
         15 . The sensor inserter assembly of  claim 1 , wherein the first resistance feature comprises a distally-facing surface of the sensor inserter assembly. 
     
     
         16 . The sensor inserter assembly of  claim 1 , wherein the first resistance feature is distal to an adhesive disposed on a distally-facing surface of the on-skin component. 
     
     
         17 . The sensor inserter assembly of  claim 1 , further comprising a pusher configured to move the on-skin component from the proximal position to the distal position. 
     
     
         18 . The sensor inserter assembly of  claim 1 , further comprising a decoupling feature configured to decouple the pusher from the on-skin component at least after the on-skin component is in the distal position. 
     
     
         19 . A method for applying an on-skin component to a skin of a host, comprising:
 providing a sensor inserter assembly comprising an on-skin component, a first securing feature, a second securing feature, and a first resistance feature;
 releasably securing the on-skin component in the proximal position by the first securing feature on the skin of the host; 
 moving the on-skin component in at least a distal direction from a proximal position to a distal position on the skin of the host; and 
 securing the on-skin component in the distal position by a second securing feature, wherein a first resistance feature prevents movement of the on-skin component in a proximal direction at least when the on-skin component is in the distal position. 
   
     
     
         20 . The method of  claim 19 , wherein the first securing feature secures the on-skin component to a needle assembly. 
     
     
         21 . The method of  claim 19 , wherein the on-skin component comprises a sensor module. 
     
     
         22 . The method of  claim 21 , wherein the sensor module comprises a sensor and a plurality of electrical contacts. 
     
     
         23 . The method of  claim 19 , wherein the first resistance feature comprises a distally-facing surface of the sensor inserter assembly. 
     
     
         24 . The method of  claim 19 , wherein the first resistance feature is distal to an adhesive disposed on a distally-facing surface of the on-skin component. 
     
     
         25 . The method of  claim 19 , wherein the sensor inserter assembly further comprises a pusher, the method further comprising moving the on-skin component from the proximal position to the distal position by the pusher. 
     
     
         26 . The method of  claim 25 , wherein the sensor inserter assembly further comprises a decoupling feature, the method further comprising decoupling the pusher from the on-skin component by the decoupling feature, at least after the on-skin component is in the distal position.