Administering apparatus comprising a dosing device
AssigneeTecPharma Licensing AG
InventorsRoney Graf, Fritz Kirchhofer
Life of this patent
Estimating the term…
Abstract
An administering apparatus having a casing including a reservoir for a product to be administered, a piston which can be shifted in the reservoir in an advancing direction towards a reservoir outlet to administer the product, a piston rod, a dosing and drive element for performing a dosing movement for selecting a product dose and a delivery movement for delivering the product dose, and a dose setting member which is moved in the advancing direction during the delivery movement, and which engages the piston rod and the casing such that it can only be moved in the advancing direction jointly with the piston rod and is moved counter to the advancing direction relative to the piston rod during the dosing movement.
Claims17
An administering apparatus comprising:
- a casing comprising a reservoir for containing a product to be administered;
- a piston which can be shifted in the reservoir in an advancing direction towards a reservoir outlet to administer the product;
- a piston rod;
- a dosing and drive element for selecting a product dose and for delivering the product dose, said dosing and drive element in an engagement with said piston rod which slaves the piston rod during said selecting and which allows an axial movement of said dosing and drive element relative to the piston rod;
- and
- a dose setting member movable in the advancing direction by the dosing and drive element during said delivering, said dose setting member engaging the piston rod and the casing such that it moves in the advancing direction jointly with the piston rod and moves counter to the advancing direction and relative to the piston rod by said selecting.
An administering apparatus comprising a dosing device, said administering apparatus comprising:
- a) a casing comprising a reservoir for a product which can be delivered, said casing having a proximal end and a distal end relative to said reservoir;
- b) a piston which can be shifted in the reservoir in an advancing direction towards a reservoir outlet to deliver the product;
- c) a piston rod;
- d) a dosing and drive element situated at said distal end of said casing where a dosing movement for selecting a product dosage and a delivery movement for delivering the product dosage can be performed relative to said casing, said dosing and drive element in an engagement with said piston rod which slaves the piston rod during said dosing movement and which allows an axial movement of said dosing and drive element relative to the piston rod;
- and
- e) a dosage setting member discrete from said dosing and drive element and situated in the casing at said proximal end, said dosage setting member secured against rotating and configured to move axially and linearly in and counter to the advancing direction, wherein said piston rod and said dosage setting member form a spindle drive for selecting product dosage such that the dosage setting member moves counter to the advancing direction when the dosage and drive element is subjected to the dosing movement, said dose setting member and said piston rod moving jointly in the advancing direction during the delivery movement of said dosing and drive element.
Dependencies are inferred from the claim text.