Patent ID: 6524280
Filing Date: 2003-02-25
Classification: A61M

Abstract:
A dose setting limiter for a medical injector, the dose setting limiter comprising:three circular parts: a shell-shaped first part; a second part; and a third part; the three parts being coaxially assembled and sharing a common center axis; wherein: the shell-shaped first part has a circular upper surface and is connectable to the injector; the second circular part is rotatable for setting up a dose and has a periphery from which a protrusion extends radially; the third part: is shaped as a flat ring sandwiched between the first and second part; is rotatable about the common centre axis with respect to the first part when the dose setting limiter is disconnected from the injector but rotationally locked to the first part when the first part is connected to the injector, further comprises another protrusion that cooperates with the protrusion located on the second part for limiting the angular rotation of the second part relative to the third part when the second part is rotated to set up a dose.