| 主权项 |
1. An injection device defining a longitudinal center axis, a proximal direction and a distal direction, the injection device comprising:
a housing; a dosing member held so as to be rotatable and fixed in said housing in the direction of the longitudinal center axis; an injection sleeve held so as to be rotationally fixed in relation to said housing and displaceable in the direction of said longitudinal center axis; said dosing member being connected to said injection sleeve via a first threaded connection; said dosing member being configured to rotate in a first rotational direction in relation to said housing when an amount of injection fluid to be dispensed is being set; said injection sleeve being configured to move in the distal direction because of said first threaded connection; said dosing member being further configured to rotate in a second rotational direction counter to said first rotational direction when said amount of injection fluid to be dispensed is being pressed out; said injection sleeve being configured to move in the proximal direction because of said first threaded connection; a container configured to contain injection fluid; a dosing piston configured to press injection fluid out of said container; said dosing piston being connected to said dosing member via a second threaded connection; said dosing piston being connected to said dosing member in a rotationally fixed manner so as to rotate conjointly therewith when said amount of injection fluid to be dispensed is being set; said dosing piston being connected to said injection sleeve in a rotationally fixed manner when said amount of injection fluid to be dispensed is pressed out and, by virtue of said second threaded connection, is moved in the proximal direction; a latching unit configured to act at least when said amount of injection fluid to be dispensed from said container is being set; and, said latching unit being configured to act between two components of the injection device which, during setting of the amount of injection fluid to be dispensed, move relative to one another, wherein a set amount of injection fluid is unequivocally assigned to each relative mutual position of the two components. |
