Patent ID: 8167840

Claim:
A disposable injector comprising: a housing ( 10 ) in which or on which are arranged, in each case at least in some areas, a mechanical spring energy reservoir ( 50 ), the housing ( 10 ) having at least one bearing surface ( 37 ), the housing ( 10 ) having an intermediate base ( 32 ) having a central opening ( 34 ) therethrough, a cylinder and piston unit ( 100 ) that can be filled at least temporarily with active substance, the cylinder and piston unit ( 100 ) comprising a piston ( 111 ) and a cylinder ( 101 ), a piston-actuating ram ( 60 ) and a trigger unit ( 80 ) in operative arrangement with the cylinder and piston unit ( 100 ), the spring energy reservoir ( 50 ) includes at least one pretensioned spring element, at least part of the piston-actuating ram ( 60 ) is operatively arranged between the spring energy reservoir ( 50 ) and the piston ( 111 ) of the cylinder and piston unit ( 100 ), the spring-loaded piston-actuating ram ( 60 ) includes at least one tension bar ( 61 ) passing through the central opening ( 34 ) and transversely movable at least in some areas between a locked active substance pre-dispensing position and an unlocked active substance dispensing position and the at least one tension bar ( 61 ) includes a support portion ( 65 ), at least one bearing surface ( 37 ) of the housing ( 10 ) in supportive relationship with the support portion ( 65 ), the support portion ( 65 ) for supporting the tensioned spring energy reservoir ( 50 ) in the locked position, the trigger unit ( 80 ) includes a trigger slide ( 82 ), the intermediate base ( 32 ) of the housing ( 10 ) in supportive relationship with at least one transversely pivotable trigger lever ( 16 ), and a catch element ( 95 ) for holding the at least one tension bar ( 61 ) in the locked position, the at least one transversely pivotable trigger lever ( 16 ) in contacting relationship with the support portion ( 65 ) and the catch element ( 95 ) in the locked position and the trigger slide ( 82 ) in operative arrangement with the transversely pivotable trigger lever or trigger levers ( 16 ), the trigger slide ( 82 ) for displacing transversely inwardly the trigger lever or trigger levers ( 16 ) by a longitudinal sliding movement or pivoting movement of the trigger slide ( 82 ), the transversely pivotable trigger lever or trigger levers ( 16 ) for pushing the catch element ( 95 ) upwardly and for releasing the at least one tension bar ( 61 ) from the locked position by sliding the support portion ( 65 ) of each of the at least one tension bar ( 61 ) from the bearing surface ( 37 ), wherein the trigger lever or trigger levers ( 16 ) each include a central elastic hinge ( 22 ), an upper area ( 23 ) and a lower area ( 24 ), the upper area ( 23 ) in pivotable relationship with the lower area ( 24 ) at the central elastic hinge ( 22 ), the upper area ( 23 ) for contacting the catch element ( 95 ) and the lower area ( 24 ) for contacting the support portion ( 65 ) in the locked position.