Insulin Infusion Set

Abstract

An insulin infusion set ( 30 ) for use with an inserter ( 40 ) is disclosed. The infusion set ( 30 ) includes an extension set ( 50 ). The extension set ( 50 ) includes a housing ( 70 ), a base ( 90 ) and a latching device ( 82 ). The base ( 90 ) houses a base septum ( 120 ) and an infusion cannula ( 42 ). The latching device ( 82 ) releasably attaches the housing ( 70 ) to the base. When the housing ( 70 ) is attached to the base ( 90 ), a part of the housing ( 70 ) extends into and opens the base septum ( 120 ).

What is claimed is: 
     
         1 . A latching device for latching a housing and a base of an infusion set, the latching device comprising:
 a pair of levers hinged to the housing, each of the levers comprising a laterally extending lever arm; and   a plurality of pockets formed on the base;   wherein when the housing is latched to the base, the lever arms of the housing interlock with a pair of the pockets of the base; and   wherein when the levers are biased, the lever arms are released from the pockets to unlatch the housing from the base.   
     
     
         2 . The latching device as claimed in  claim 1 , wherein the levers are integrally formed with the housing. 
     
     
         3 . The latching device as claimed in  claim 1 , wherein the pockets of the base are arranged around an infusion cannula, and the number of the pockets corresponds to the rotational positions that the housing can latch to the base. 
     
     
         4 . The latching device as claimed in  claim 3 , wherein the pockets each comprise a catch, and the lever arms engage with the catches when the housing is, latched to the base. 
     
     
         5 . The latching device as claimed in  claim 3 , wherein an increment of rotation of the housing for latching to the base is 60 degrees. 
     
     
         6 . The latching device as claimed in  claim 3 , wherein the housing includes a housing septum for receiving an introducer needle.