Abstract: An injection device comprises a syringe extendible against a spring bias from a retracted position in a housing to a projecting injecting position. A spring biased plunger has collapsible elbows which, when the plunger is released, initially engage the end of the syringe to drive it to the projecting position, whereupon arresting of the syringe movement causes the elbows to collapse inside the syringe to allow the plunger to engage and drive the bung.

Abstract: An automatic injection device for providing a injection is disclosed. The device includes a housing having a distal end operable by a user and an open proximal end for placement at an injection site. The device includes a syringe movably disposed in the housing. The syringe includes a needle and substance for injection. The device also includes a plunger that has a continuous length from a first end to a second end and includes an anchoring portion initially engaged with the distal end of the housing in a latched position. The device also includes a biasing mechanism to apply pressure to the plunger when activated and move the plunger towards the proximal end of the housing, and a firing mechanism assembly operable by the user to release the anchoring portion.

Abstract: An automatic injection device for providing a subcutaneous injection is disclosed. The device includes a syringe movably disposed in a housing and including a barrel portion, a needle and a bung for sealing the barrel portion. The device includes a plunger for moving the syringe towards a first open end of the housing such that the needle projects from the first end, and for subsequently applying pressure to the bung. The plunger includes a rod connected at a first end to the bung, a compressible expanded central portion, and a flange between a second end of the rod and the central portion. The device also includes a biasing mechanism for biasing the plunger towards the first open end of the housing, the biasing mechanism disposed about the second end of the rod between the flange and a second end of the housing.

Abstract: A needle shield arrangement for a syringe (10), having a generally cylindrical body with a needle (16) at its forward end, includes a shield portion (20) adapted for shielding the needle (16); a syringe engaging portion (22) for engagement with the syringe body, and a frangible connecting portion (24) connecting the shield portion and the syringe engagement portion.

Abstract: An injection device includes a cap which is withdrawn from the front of the device before use to remove a boot from the needle. The cap has fingers which grip the boot and which pass down a passage through which the needle projects to inject a dose. The passage has projections disposed to reduce the effective bore of the passage, the projections having inwardly inclined resilient portions which allow the boot to be withdrawn forwardly through the passage but prevent a finger being poked into the passage.

Abstract: A method for treating a disorder using an automatic injection device is disclosed. The device includes a syringe movably disposed in a housing and including a barrel portion, a needle and a bung for sealing the barrel portion. The device includes a syringe actuation component for moving the syringe towards a first open end of the housing such that the needle projects from the first end, and for subsequently applying pressure to the bung. The syringe actuation component includes a pressurizer, a rod comprising a compressible portion projecting therefrom, and a flange between a second end of the rod and the compressible portion. The device also includes a biasing mechanism for biasing the syringe actuation component towards the first open end of the housing, the biasing mechanism disposed about the second end of the rod between the flange and a second end of the housing.

Abstract: Automatic injection device includes a housing, a syringe, a plunger, and a syringe carrier. The housing includes a barrel. The barrel includes an elongated window to allow viewing of contents inside the housing. The syringe is disposed within the housing and has a reservoir. The plunger is at least partially disposed within the syringe and includes a visual indicator. The syringe carrier is disposed within the housing and configured to contain the syringe and displace the syringe within the housing between a first position and a second position. The syringe carrier has a first opening and a second opening. The first opening is configured to align with the window and the reservoir when the syringe carrier is in the first position, and the second opening is configured to align with the window and the visual indicator when the syringe carrier is in the second position.

Abstract: A method for treating a disorder using an automatic injection device is disclosed. The device includes a syringe movably disposed in a housing and including a barrel portion, a needle and a bung for sealing the barrel portion. The device includes a syringe actuation component for moving the syringe towards a first open end of the housing such that the needle projects from the first end, and for subsequently applying pressure to the bung. The syringe actuation component includes a pressurizer, a rod comprising a compressible portion projecting therefrom, and a flange between a second end of the rod and the compressible portion. The device also includes a biasing mechanism for biasing the syringe actuation component towards the first open end of the housing, the biasing mechanism disposed about the second end of the rod between the flange and a second end of the housing.

Abstract: An injection device includes a forward housing, a drive housing that has a forward end configured to be attached to and detached from a rear end of the forward housing, a syringe holder mounted within the forward housing for longitudinal movement with respect to the forward housing, and a syringe with a needle that is mounted in the syringe holder. The drive housing includes a drive mechanism, and the syringe holder includes detent means for engaging the syringe to prevent or limit relative axial movement of the syringe relative to the syringe holder.

Abstract: An injection device comprises a syringe extendible against a spring bias from a retracted position in a housing to a projecting injecting position. A spring biased plunger has collapsible elbows which, when the plunger is released, initially engage the end of the syringe to drive it to the projecting position, whereupon arresting of the syringe movement causes the elbows to collapse inside the syringe to allow the plunger to engage and drive the bung.

Abstract: An injection device has a main drive module which can be screwed into the back of a syringe housing to prepare the injector ready for use. The drive module has a firing button and a drive plunger released for forward movement by pressing the firing button. The syringe housing slideably receives a syringe holder whose forward movement is initially prevented by internally directed barbs on a cylindrical latching sleeve. The latching sleeve is acted upon by a release ring on the drive module such that as the drive module is screwed onto the syringe housing, the release ring splays the cylindrical shell to release the syringe carrier for forward movement. The barbs also act as a latch to capture the syringe carrier in its rearward position when the drive module is unscrewed from the syringe housing, which returns the barbs to their initial position before the syringe holder returns to its initial position.

Abstract: An injection device comprises a syringe extendible against a spring bias from a retracted position in a housing to a projecting injecting position. A spring biased plunger has collapsible elbows which, when the plunger is released, initially engage the end of the syringe to drive it to the projecting position, whereupon arresting of the syringe movement causes the elbows to collapse inside the syringe to allow the plunger to engage and drive the bung.

Abstract: An automatic injection device for providing a subcutaneous injection is disclosed. The device includes a syringe movably disposed in a housing and including a barrel portion, a needle and a bung for sealing the barrel portion. The device includes a plunger for moving the syringe towards a first open end of the housing such that the needle projects from the first end, and for subsequently applying pressure to the bung. The plunger includes a rod connected at a first end to the bung, a compressible expanded central portion, and a flange between a second end of the rod and the central portion. The device also includes a biasing mechanism for biasing the plunger towards the first open end of the housing, the biasing mechanism disposed about the second end of the rod between the flange and a second end of the housing.

Abstract: An injector assembly (100) includes a main body (102) having a first connecting arrangement, and a cap (104) having a second connecting arrangement for, in use, releasably connecting the cap to the first connecting arrangement of the main body. The first or the second connecting arrangement (120) includes an open neck portion (122) leading to a locating portion (124), at least part of the locating portion having a maximum width (120A) greater than a maximum width (120B) of the open neck portion. The second of the first connecting arrangement (108), respectively, includes a head portion (109) having a maximum width (108A) greater than the maximum width of the open neck portion.

Abstract: An injection device comprises a syringe extendible against a spring bias from a retracted position in a housing to a projecting injecting position. A spring biased plunger has collapsible elbows which, when the plunger is released, initially engage the end of the syringe to drive it to the projecting position, whereupon arresting of the syringe movement causes the elbows to collapse inside the syringe to allow the plunger to engage and drive the bung.

Abstract: An automatic injection device for providing a subcutaneous injection is disclosed. The device includes a syringe movably disposed in a housing and including a barrel portion, a needle and a bung for sealing the barrel portion. The device includes a plunger for moving the syringe towards a first open end of the housing such that the needle projects from the first end and subsequently applying pressure to the bung. The plunger includes a rod connected at a first end to the bung, a compressible expanded central portion, and a flange between a second end of the rod and the central portion. The device includes a biasing mechanism for biasing the plunger towards the first open end of the housing, the biasing mechanism disposed about the second end of the rod between the flange and the second end of the housing.

Abstract: An injection device comprises a syringe extendible against a spring bias from a retracted position in a housing to a projecting injecting position. A spring biased plunger has collapsible elbows which, when the plunger is released, initially engage the end of the syringe to drive it to the projecting position, whereupon arresting of the syringe movement causes the elbows to collapse inside the syringe to allow the plunger to engage and drive the bung.

Abstract: A needle shield arrangement for a syringe (10), having a generally cylindrical body with a needle (16) at its forward end, includes a shield portion (20) adapted for shielding the needle (16); a syringe engaging portion (22) for engagement with the syringe body, and a frangible connecting portion (24) connecting the shield portion and the syringe engagement portion.

Abstract: An injection device includes a cap (38) which is withdrawn from the front of the device before use to remove a boot (52) from the needle (50). The cap (52) has fingers (46) which grip the boot and which pass down a passage through which the needle projects to inject a dose. The passage has projections disposed to reduce the effective bore of the passage, the projections having inwardly inclined resilient portions which allow the boot to be withdrawn forwardly through the passage but prevent a finger being poked into the passage.

Abstract: An injection device comprises a syringe extendible against a spring bias from a retracted position in a housing to a projecting injecting position. A spring biased plunger has collapsible elbows which, when the plunger is released, initially engage the end of the syringe to drive it to the projecting position, whereupon arresting of the syringe movement causes the elbows to collapse inside the syringe to allow the plunger to engage and drive the bung.