Disposable infusion device with refill prevention

Abstract

A wearable infusion device prevents reservoir refilling. The device includes a base adapted to be adhered to a patient's skin, a reservoir that holds a liquid medicament, and a cannula that delivers liquid medicament from the reservoir to the patient. The device further includes a fill port communicating with the reservoir to permit the reservoir to be provided with the liquid medicament, and a lock-out that prevents the reservoir from being refilled through the fill port after the reservoir has been provided with the liquid medicament.

1 - 16 . (canceled) 
   
   
       17 . A wearable infusion device comprising:
 a reservoir that holds a liquid medicament;   an outlet port that delivers the liquid medicament to a patient;   a pump that displaces a volume of the liquid medicament to the outlet port when actuated;   a control that actuates the pump;   a fill port communicating with the reservoir to permit the reservoir to be filled with the liquid medicament; and   a lock-out that prevents the reservoir from being refilled after the reservoir has been filled.   
   
   
       18 . The device of  claim 17 , wherein the lock-out blocks the fill port. 
   
   
       19 . The device of  claim 17 , wherein the lock-out prevents the reservoir from being refilled after the reservoir has been once filled. 
   
   
       20 . The device of  claim 17 , wherein the lock-out is responsive to pressure to prevent the reservoir from being refilled after the reservoir has been filled. 
   
   
       21 . The device of  claim 20 , wherein the lock-out is responsive to pressure within the fill port. 
   
   
       22 . The device of  claim 20 , further comprising a chamber between the fill port and the reservoir, and wherein the lock-out senses pressure within the chamber. 
   
   
       23 . The device of  claim 22 , wherein the lock-out includes a diaphragm for sensing pressure within the chamber. 
   
   
       24 . The device of  claim 17 , wherein the lock-out is responsive to the reservoir being at a given level to prevent the reservoir from being refilled. 
   
   
       25 . The device of  claim 24 , wherein the lock-out blocks the fill port. 
   
   
       26 . A wearable infusion device comprising:
 a base adapted to be adhered to a patient's skin;   a reservoir that holds a liquid medicament;   a cannula that delivers liquid medicament from the reservoir to the patient;   a fill port communicating with the reservoir to permit the reservoir to be provided with the liquid medicament; and   a lock-out that prevents the reservoir from being refilled through the fill port after the reservoir has been provided with the liquid medicament.   
   
   
       27 . The device of  claim 26 , wherein the lock-out blocks the fill port. 
   
   
       28 . The device of  claim 26 , wherein the lock-out prevents the reservoir from being refilled after the reservoir has once been provided with the liquid medicament. 
   
   
       29 . The device of  claim 26 , wherein the lock-out is responsive to pressure to prevent the reservoir from being refilled through the fill port after the reservoir has once been provided with the liquid medicament. 
   
   
       30 . The device of  claim 29 , wherein the lock-out is responsive to pressure within the fill port. 
   
   
       31 . The device of  claim 29 , further comprising a chamber between the fill port and the reservoir, and wherein the lock-out senses pressure within the chamber. 
   
   
       32 . The device of  claim 31 , wherein the lock-out includes a diaphragm for sensing pressure within the chamber. 
   
   
       33 . The device of  claim 26 , wherein the lock-out is responsive to the reservoir being at a given level to prevent the reservoir from being refilled. 
   
   
       34 . The device of  claim 33 , wherein the lock-out blocks the fill port.