CPC A61M 5/14248 (2013.01) [A61M 2005/1402 (2013.01); A61M 2005/14252 (2013.01); A61M 2005/14268 (2013.01)] | 15 Claims |
1. A patch pump drug delivery device comprising:
a reusable part (RP) including:
a lead screw;
a lead screw tip; and
a reservoir cover;
and
a disposable part (DP) including:
a reservoir having a proximal end and a distal end;
a plunger having a proximal end and a distal end, wherein the distal end is in contact with a drug contained in the reservoir;
a doser reservoir;
a doser plunger;
a flexible member integral with or connected to a proximal end of the doser plunger and including an opening for receiving and reversible connection with the lead screw tip;
and
a sleeve cover connected with the proximal end of the doser reservoir and including an opening for receiving and enabling reversible connection of the lead screw tip with the doser plunger, and having an internal edge arranged to face the flexible member,
wherein
upon connecting the RP with the DP, the sleeve cover and doser plunger are arranged at the proximal end of the doser reservoir such that the flexible member interacts with the internal edge of the sleeve cover to allow the flexible member to receive the lead screw tip within the opening of the flexible member, and as the doser plunger proceeds down the doser reservoir during use, the lead screw tip is connected to the doser plunger;
and
upon disconnecting the RP with the DP the sleeve cover and doser plunger are arranged at the proximal end of the doser reservoir, such that the flexible member interacts with the internal edge of the sleeve cover to allow the lead screw tip to be removed from within the opening of the flexible member.
|