Injection device
First Claim
1. An injection device comprising:
- a housing (42, 52) to which a container (34) having injection fluid (32) is connectable;
a first element (94) for ejecting injection fluid (32) from such a container (34), which first element (94) is shaped with an external thread (92);
a metering element (66, 88;
166) that is arranged rotatably relative to the housing (42, 52) and has an internal thread (90) that is in engagement with the external thread (92) of the first element (94), which metering element (66, 88;
166) is rotatable, together with the first element (94), relative to the housing (42, 52) for preselection of an injection dose; and
a coupling arrangement which is implemented to block, during an injection operation, a rotation of the first element (94) relative to the housing (52) but to enable a rotation of the metering element (66, 88;
166) relative to the housing (42, 52),so that, by means of such a rotation of the metering element (66, 88;
166) during an injection operation, an axial displacement of the first element in a proximal direction, toward the patient, is performed, in order to eject injection fluid (32) from such a container (34).
2 Assignments
0 Petitions
Accused Products
Abstract
An injection device (30) features a housing (42, 52) for reception of a container (34) having a fluid (32) to be injected, a first element (94) for ejecting injection fluid (32) from such a container (34), and said first element (94) has an external thread (92). A metering element (66, 88) has an internal thread (90) that is in engagement with the external thread (92) of the first element (94), and said metering element (66) is rotatable, together with the first element (94), for preselection of a desired injection dose. A coupling arrangement (K1) serves, during an injection operation, to create a nonrotatable connection between the first element (94) and the housing (42, 52) and thereby to block, during an injection operation, a rotation of the first element (94) relative to the housing (42, 52) but to enable a rotation of the metering element (66, 88) relative to the housing (42, 52).
-
Citations
20 Claims
-
1. An injection device comprising:
-
a housing (42, 52) to which a container (34) having injection fluid (32) is connectable; a first element (94) for ejecting injection fluid (32) from such a container (34), which first element (94) is shaped with an external thread (92); a metering element (66, 88;
166) that is arranged rotatably relative to the housing (42, 52) and has an internal thread (90) that is in engagement with the external thread (92) of the first element (94), which metering element (66, 88;
166) is rotatable, together with the first element (94), relative to the housing (42, 52) for preselection of an injection dose; anda coupling arrangement which is implemented to block, during an injection operation, a rotation of the first element (94) relative to the housing (52) but to enable a rotation of the metering element (66, 88;
166) relative to the housing (42, 52),so that, by means of such a rotation of the metering element (66, 88;
166) during an injection operation, an axial displacement of the first element in a proximal direction, toward the patient, is performed, in order to eject injection fluid (32) from such a container (34). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. An injection device comprising
a housing (52); -
a container (34) for the reception of injection fluid (32), which container (34) is connectable to the housing (52); a metering element (66, 88;
166) that is implemented rotatably, but not axially displaceably, relative to the housing (42, 52);an external thread (72) associated with the metering element (66, 88;
166);a sleeve-shaped element (116) that is implemented axially movably in the housing (52) but not rotatably relative to the housing (52) and has an internal thread (118) that is in engagement with the external thread (72) of the metering element (66, 88;
166), in order to enable, by rotation of the metering element (66, 88;
166) relative to the housing (52), an axial displacement of the sleeve-shaped element (116) within the housing (52) and thereby the setting of an injection dose;a manually adjustable dose-setting element (40); and a coupling arrangement (122, 125) selectively operable in a first mode, forming an engagement between said dose-setting element (40) and said sleeve-shaped element (116) during an injection operation and in a second mode, disengaging the dose-setting element (40) from the sleeve-shaped element (116), for preselection of a desired injection dose. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
-
Specification