Autoinjector and method of assembling
AssigneeSanofi-Aventis Deutschland GmbH
InventorsThomas Mark Kemp, Carsten Mosebach
Life of this patent
Estimating the term…
Abstract
The disclosure further relates to an autoinjector and a method of assembling the autoinjector. A syringe carrier is disclosed comprising a housing adapted to receive a syringe. They syringe includes a needle encapsulated by a removable protective needle sheath. The syringe carrier further includes two or more flexible arms protruding outwards in a relaxed state and adapted to couple with the syringe in a mounted position. In the mounted position, the flexible arms deflect radially inwards due, in part, to an axial force operating on the syringe carrier.
Claims22
An autoinjector comprising:
- a syringe carrier comprising:
- a housing of the syringe carrier adapted to receive a syringe having a needle encapsulated by a distal removable protective needle sheath, and
- two or more flexible arms extending distally from the housing of the syringe carrier and adapted to couple with the syringe in a mounted position;
- a case adapted to receive the syringe carrier;
- the syringe;
- and
- the distal removable protective needle sheath,
- wherein the two or more flexible arms extend distally from a distal end of the housing of the syringe carrier, and
- wherein the syringe carrier is formed as a single part comprising the housing of the syringe carrier and the two or more flexible arms,
- wherein the case comprises at least one inwardly directed edge configured to force the syringe and the distal removable protective needle sheath apart by operating onto the two or more flexible arms.
A method of assembling an autoinjector, the method comprising:
- inserting and pre-positioning a syringe axially into a syringe carrier mounted in a case, the syringe having a needle encapsulated by a removable protective needle sheath, the syringe carrier comprising two or more flexible arms extending distally from a housing of the syringe carrier and adapted to couple with the syringe in a mounted position;
- inserting a front-assembly tool at a distal end of the case and a back-assembly tool at a proximal end of the case;
- and
- mounting the syringe into the syringe carrier by releasing the syringe carrier from the case using the back-assembly tool and moving the syringe carrier forward within the case using the back-assembly tool,
- wherein the case comprises at least one inwardly directed edge configured to operate onto the two or more flexible arms and force the syringe and the removable protective needle sheath apart.
A method of delivering a drug from a drug delivery device, wherein the drug delivery device comprises:
- a syringe carrier comprising:
- a housing of the syringe carrier adapted to receive a syringe having a needle encapsulated by a distal removable protective needle sheath, and
- two or more flexible arms extending distally from the housing of the syringe carrier and adapted to couple with the syringe in a mounted position;
- a case adapted to receive the syringe carrier;
- the syringe;
- and
- the distal removable protective needle sheath,
- wherein the two or more flexible arms extend distally from a distal end of the housing of the syringe carrier, wherein the syringe carrier is formed as a single part comprising the housing of the syringe carrier and the two or more flexible arms, and wherein the case comprises at least one inwardly directed edge configured to force the syringe and the distal removable protective needle sheath apart by operating onto the two or more flexible arms,
- the method comprising:
- coupling the two or more flexible arms of the syringe carrier with the syringe in the mounted position of the syringe, wherein the two or more flexible arms extend distally from the housing of the syringe carrier;
- and
- moving a plunger of the drug delivery device relative to the housing of the syringe carrier to deliver a dose of the drug from the syringe.
Dependencies are inferred from the claim text.