TRANSCUTANEOUS ANALYTE SENSOR SYSTEMS AND METHODS
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.
1 . A sensor inserter assembly for applying an on-skin assembly to a skin of a host, the system comprising:
a sensor inserter assembly comprising a needle assembly, a sensor module, a base, an actuation member, and a retraction member, the sensor inserter assembly having an initial configuration in which at least the sensor module is disposed in a proximal starting position, the sensor inserter assembly further having a deployed configuration in which at least the sensor module and the base are disposed at a distal applied position,
wherein the actuation member is configured to, once activated, cause the needle assembly to move a proximal starting position to a distal insertion position, and
wherein the retraction member is configured to, once activated, cause the needle assembly to move from the distal insertion position to a proximal retracted position.
2 . The sensor inserter assembly of claim 1 , wherein the sensor module comprises a sensor and a plurality of electrical contacts.
3 . The sensor inserter assembly of claim 2 , wherein in the initial configuration, the sensor is electrically coupled to at least one of the electrical contacts.
4 . The sensor inserter assembly of claim 1 , wherein, in the initial configuration, the actuation member is in an unenergized state.
5 . The sensor inserter assembly of claim 1 , wherein the actuation member is configured to be energized by a user before being activated.
6 . The sensor inserter assembly of claim 1 , wherein, in the initial configuration, the actuation member is in an energized state.
7 . The sensor inserter assembly of claim 1 , wherein the actuation member comprises a spring.
8 . The sensor inserter assembly of claim 1 , wherein, in the initial configuration, the retraction member is in an unenergized state.
9 . The sensor inserter assembly of claim 1 , wherein the retraction member is configured to be energized by the movement of the needle assembly from the proximal starting position to the distal insertion position.
10 . The sensor inserter assembly of claim 1 , wherein, in the initial configuration, the retraction member is in an energized state.
11 . The sensor inserter assembly of claim 1 , wherein the retraction member comprises a spring.
12 . The sensor inserter assembly of claim 11 , wherein the spring is integrally formed with the needle assembly.
13 . The sensor inserter assembly of claim 11 , wherein the spring is operatively coupled to the needle assembly.
14 . The sensor inserter assembly of claim 11 , wherein, in the initial configuration, the spring is in an unstressed state.
15 . The sensor inserter assembly of claim 1 , wherein the actuation member is integrally formed with the third portion.
16 . A sensor inserter assembly for applying an on-skin assembly to a skin of a host, the system comprising:
a sensor inserter assembly comprising a needle assembly, a sensor module, a base, an actuation member, and a retraction member, the sensor inserter assembly having an initial configuration in which at least the sensor module is disposed in a proximal starting position, the sensor inserter assembly further having a deployed configuration in which at least the sensor module and the base are disposed at a distal applied position,
wherein the actuation member is configured to, once activated, cause the needle assembly to move a proximal starting position to a distal insertion position, and
wherein the retraction member is configured to, once activated, cause the needle assembly to move from the distal insertion position to a proximal retracted position, and
wherein the sensor inserter assembly comprises interengaging structures configured to prevent movement of the first portion in the distal direction relative to the second portion until the interengaging structures are decoupled.
17 . The sensor inserter assembly of claim 16 , wherein decoupling of the interengaging structures activates the actuation member.
18 . The sensor inserter assembly of claim 16 , wherein the interengaging structures comprise a proximally extending tab of the first portion and a receptacle of the second portion configured to receive the proximally extending tab.
19 . The sensor inserter assembly of claim 16 , further comprising a decoupling member configured to decouple the interengaging structures.
20 . The sensor inserter assembly of claim 16 , wherein the decoupling member comprises a distally extending tab of the third portion.
21 . The sensor inserter assembly of claim 16 , wherein the interengaging structures are configured to prevent proximal movement of the third portion with respect to the first portion.
22 . The sensor inserter assembly of claim 21 , wherein the interengaging structures comprise a distally-extending latch of the third portion and a ledge of the first portion configured to engage the distally-extending latch.
23 . The sensor inserter assembly of claim 16 , wherein the interengaging structures are configured to prevent proximal movement of the needle assembly at least when the needle assembly is in the distal insertion position.