Back to results
US 8,075,515 B2Granted
Disposable injector with at least one compression bar and a closure cap
AssigneeLTS Lohmann Therapie-Systeme AG
InventorRudolf Matusch
Life of this patent
Estimating the term…
Abstract
A disposable injector with a housing that has at least one compression hook, which has at least one support surface respectively in the region of its free end. A piston-actuating plunger rests on the support surface. The locking position of the compression hook is secured by an actuating element positioned in a locked position. The actuating element has a locked position, in which it rests securely on a sealing cap. The actuating element has a triggering position, which effects lateral retreat of the compression hook when the piston-actuating plunger is released.
Claims23
A disposable injector comprising:
- a hollow pot-shaped housing (10), in which or on which—respectively at least in certain areas—at least one mechanical spring-energy storage (50), at least one cylinder-piston unit (100) which can be filled at least occasionally with active ingredient, at least one piston-actuating plunger (60) and at least one actuating unit (80) are arranged, the spring-energy storage (50) includes at least one pre-stressed spring-loaded element and at least part of the piston-actuating plunger (60) is positioned between the spring-energy storage (50) and a piston (111) of the cylinder-piston unit (100), the housing has at least one compression bar (21) having a fixed end and a free end, the at least one compression bar (21) either operably affixed to the housing (10) at the fixed end thereof via a spring-loaded element (52) for forcing normally radially outwardly the at least one compression bar (21) at the free end, or formed monolithically as part of the housing (10) and having a sprung-elastic flexional beam (28) which is self-biased in a radially outward direction, the compression bar (21) in the region of its free end having at least one support surface (23),—the piston-actuating plunger (60) rests on the least one support surface (23),—the actuating unit (80) has a locked position (8), the actuating unit (80) in the locked position (8) operatively arranged to laterally secure the at least one compression bar (21),—at least one sealing cap (120) in sterile sealing relationship with the at least one cylinder-piston unit (100), the actuating unit (80) in the locked position (8) in secure resting relationship with sealing cap (120), and—the actuating unit (80) has a triggering position (9), the actuating unit (80) in the triggering position (9) in receptive relationship with the at least one compression bar (21) to effect lateral retreat of the at least one compression bar (21) when the piston-actuating plunger (60) is released.
Dependencies are inferred from the claim text.