US 10,646,655 B2Granted

Syringe

AssigneeF+K Innovationen Gmbh & Co. KG

InventorKarl-Heinz Fuchs

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Abstract

A syringe having a dispensing element (20) and having a mounting element (2), wherein the dispensing element (20) has a dispensing sleeve (21) and a leaf spring system (3), wherein the mounting element (2) has a syringe body (17), and an injection needle (16) is formed on one end on the syringe body (17) and a detent-engagement flange (19) is formed on the other end, wherein, in the syringe body (17), there is arranged a movable stopper (18), wherein the leaf spring system (3) comprises a piston (6) and a spiral spring (5) arranged around the piston (6), wherein the piston (6) can be slid into the dispensing sleeve (21), and the spiral spring (6) is arranged between a leaf spring base (22) and a spiral spring abutment, wherein the piston (6) abuts against the stopper (18), wherein the dispensing sleeve (21) has a guide duct and the dispensing sleeve (21) comprises a first locking means (7) and a second locking means (9), wherein the detent-engagement flange (19) is movable in the guide duct and is fixable and releasable at the first locking means (7) or the second locking means (9).

Claims8

Dependent claims

A syringe having a discharge element (20) and having a storage element (2), wherein the discharge element (20) has a discharge sleeve (21) and a spring system (3), wherein the storage element (2) has a syringe body (17), and an injection needle (16) is formed at one end on the syringe body (17) and an engagement flange (19) is formed at the other end, wherein a movable stopper (18) is arranged in the syringe body (17),

wherein the spring system (3) comprises a plunger (6) and a spiral spring (5) arranged around the plunger (6), wherein the plunger (6) and the spiral spring (5) can be pushed into the discharge sleeve (21), and the spiral spring (5) is arranged between a spring base (22), wherein the plunger (6) abuts against the stopper (18) and the spiral spring (5) abuts against a spiral spring stop (12) at the spring base (22),
wherein the discharge sleeve (21) has a guide channel and the discharge sleeve (21) comprises a first locking means (7) and a second locking means (9), wherein the syringe body is moveable along the discharge sleeve between a first position wherein the engagement flange (19) of the syringe body is fixable and releasable at the first locking means (7), and a second position wherein the engagement flange (19) of the syringe body is fixable and releasable at the second locking means (9),
wherein the discharge sleeve (21) has a puncture abutment face (13) at one end and the first locking means (7) is formed at the other end, wherein the puncture abutment face (13) comprises a receptacle, and
wherein the puncture abutment face (13) comprises a bellows (14).

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 15/748,752Filed 28 Jul 2016
Priority: DE 10 2015 112 56430 Jul 2015
Published: US 2019/0022321 A124 Jan 2019
Granted: 12 May 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

A61M 5/24
Syringes: ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or cartridges, e.g. automatic
A61M 5/2033
Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically: spring-loaded one-shot…
A61M 5/31551
By rotational movement of dose setting member, e.g. during setting or filling of a syringe: including axial movement of dose setting member
A61M 5/31563
Mechanically operated dose setting member: interacting with a displaceable stop member