AMBULATORY INFUSION DEVICE WITH PLUNGER POSITION MEMORY
First Claim
1. Ambulatory infusion device for infusion of a liquid drug into a patient'"'"'s body over an extended time period, comprising:
- a housing having a cartridge compartment which receives a cartridge;
a drive having a plunger which engages a plug of the cartridge and displaces the plug within a cartridge body of the cartridge in a controlled way;
an electronic controller which controls operation of the drive; and
a position memory which stores at least one loading position of the plunger, the at least one loading position being a plunger position for correct engagement of the plug wherein the cartridge can be loaded into the ambulatory infusion device by the controller retrieving the stored loading position from the position memory of the device, controlling the drive of the ambulatory infusion device to displace the plunger into the retrieved loading position, and displacing a received cartridge into a final axial position while the plunger is in the retrieved loading position.
1 Assignment
0 Petitions
Accused Products
Abstract
An ambulatory infusion device for the infusion of a liquid drug into a patient'"'"'s body over an extended time period is disclosed. The infusion device provides a housing having a cartridge compartment designed to receive a cartridge, a drive having a plunger adapted to engage a plug of the cartridge and to displace the plug within the cartridge in a controlled way, and an electronic controller controlling operation of the drive. The infusion device further has a position memory which stores at least one stored loading position of the plunger, and in which the controller retrieves a stored loading position from the position memory and controls the drive to displace the plunger into the retrieved loading position. A system for ambulatory drug infusion comprising such an ambulatory infusion device as well as a filling apparatus and a method for loading a cartridge into such a device are also disclosed.
-
Citations
20 Claims
-
1. Ambulatory infusion device for infusion of a liquid drug into a patient'"'"'s body over an extended time period, comprising:
-
a housing having a cartridge compartment which receives a cartridge; a drive having a plunger which engages a plug of the cartridge and displaces the plug within a cartridge body of the cartridge in a controlled way; an electronic controller which controls operation of the drive; and a position memory which stores at least one loading position of the plunger, the at least one loading position being a plunger position for correct engagement of the plug wherein the cartridge can be loaded into the ambulatory infusion device by the controller retrieving the stored loading position from the position memory of the device, controlling the drive of the ambulatory infusion device to displace the plunger into the retrieved loading position, and displacing a received cartridge into a final axial position while the plunger is in the retrieved loading position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method for loading a cartridge into an ambulatory infusion device, comprising:
-
retrieving a stored loading position from a position memory of the device and controlling a drive of the ambulatory infusion device to displace a plunger of the drive into the retrieved loading position; inserting the cartridge into the cartridge compartment; and displacing the cartridge into a final axial position while the plunger is in the retrieved loading position. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification