INJECTION DEVICE
First Claim
1. Injection device (1), in particular an autoinjector, which is designed to be adjustable from a storage position to an injection position, comprising a support housing (2), which has a distal end (11) to be applied to a patient (10) and a proximal end (12) opposite the latter, between which a longitudinal axis (13) extends,an activating sleeve (9), which surrounds the support housing (2) at least partly, whereby the distal end (11) of the support housing (2) projects over the activating sleeve (9), and the activating sleeve (9) can be displaced in axial direction relative to the support housing (2),a cartridge (3) containing the medicine (14) to be administered in an injection procedure, whereby the cartridge (3) is mounted in the support housing (2),a first drive unit (4) which is in active connection with the cartridge (3) and the activating sleeve (9) and can be triggered by means of the activating sleeve (9),a safety device (5), which secures the first drive unit (4) prior to its activation for the injection procedure in position relative to the support housing (2),a needle arrangement (6), which is arranged ahead of the cartridge (3) in the storage position of the injection device (1) in the section of the distal end (11), and both needle ends (21, 22) of a cannula (20) are arranged inside the support housing (2),a needle protection element (7) which can be displaced from a non-active position into a position which covers the needle end (21) projecting over the distal end (11) of the support housing (2) after the injection procedure,a second activatable drive unit (8), which displaces the needle protection element (7) from the non-active position into the covering position,whereinthe support housing (2) is surrounded over the most part of its longitudinal extension between the distal and proximal end (11, 12) by the activating sleeve (9) and the needle protection element (7) with the second drive unit (8) interacting therewith is arranged radially between the support housing (2) and the activating sleeve (9), as viewed in axial cross section.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to an injection device (1), which comprises a support housing (2), an activating sleeve (9), a cartridge (3) containing a medicine (14), a first drive unit (4), a safety device (5), a needle arrangement (6), a needle protection element (7) and a second triggerable drive unit (8), whereby the latter moves the needle protection element (7) from the non-effective position into the position covering one needle end (21) of a cannula (20). The support housing (2) is surrounded over most of its longitudinal extension between its distal and proximal end (11, 12) by the activating sleeve (9), whereby the needle protection element (7) with the second drive unit (8) cooperating therewith is arranged radially between the support housing (2) and the activating sleeve (9), as viewed in axial cross section.
83 Citations
40 Claims
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1. Injection device (1), in particular an autoinjector, which is designed to be adjustable from a storage position to an injection position, comprising a support housing (2), which has a distal end (11) to be applied to a patient (10) and a proximal end (12) opposite the latter, between which a longitudinal axis (13) extends,
an activating sleeve (9), which surrounds the support housing (2) at least partly, whereby the distal end (11) of the support housing (2) projects over the activating sleeve (9), and the activating sleeve (9) can be displaced in axial direction relative to the support housing (2), a cartridge (3) containing the medicine (14) to be administered in an injection procedure, whereby the cartridge (3) is mounted in the support housing (2), a first drive unit (4) which is in active connection with the cartridge (3) and the activating sleeve (9) and can be triggered by means of the activating sleeve (9), a safety device (5), which secures the first drive unit (4) prior to its activation for the injection procedure in position relative to the support housing (2), a needle arrangement (6), which is arranged ahead of the cartridge (3) in the storage position of the injection device (1) in the section of the distal end (11), and both needle ends (21, 22) of a cannula (20) are arranged inside the support housing (2), a needle protection element (7) which can be displaced from a non-active position into a position which covers the needle end (21) projecting over the distal end (11) of the support housing (2) after the injection procedure, a second activatable drive unit (8), which displaces the needle protection element (7) from the non-active position into the covering position, wherein the support housing (2) is surrounded over the most part of its longitudinal extension between the distal and proximal end (11, 12) by the activating sleeve (9) and the needle protection element (7) with the second drive unit (8) interacting therewith is arranged radially between the support housing (2) and the activating sleeve (9), as viewed in axial cross section.
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33. Method for sterilising an injection device (1), in particular an autoinjector, which comprises the following steps:
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forming a support housing (2) comprising a front and rear support housing part (27, 28), whereby the two support housing parts (27, 28) are coupled together in a connecting section (31) via a coupling device (32) in their longitudinal extension in two different longitudinal positions; forming a throughput (37) in the connecting section (31) of the two support housing parts (27, 28) for producing a flow connection with at least one holding chamber (29, 30) of the two support housing parts (27, 28) in the first coupled longitudinal position; arranging a cartridge (3) containing medicine (14), a needle arrangement (6) arranged upstream of the cartridge (3) and a drive unit (4) interacting with the cartridge (3) in the support housing (2); sealing an opening (35) formed in the distal end (11) of the front support housing part (27) and designed for the passage of a needle end (21) of a cannula (20) with a penetrable sealing stopper (36) in sealing position with the support housing part (27); arranging a peripheral sealing element (43) in the connecting section (31) of the two support housing parts (27, 28) performing the sterilisation of at least one holding chamber (29) formed and sealed in the support housing parts (27) and the needle arrangement (6) mounted therein by means of gassing with ethylene oxide via the throughput (37) formed in the connecting section (31); interrupting the flow connection between the sterilised holding chamber (29, 30) and the outer environment via the throughput (37) formed in the connecting section (31), whereby the sealing element (43) is moved into sealing connection both with one end of the rear support housing part (28) facing the front support housing part (27) and an inner surface (45) of the front support housing part (27). - View Dependent Claims (35, 36, 37, 38, 39, 40)
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34. Method for sterilising an injection device (1), in particular an autoinjector, which comprises the following steps:
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forming a support housing (2) comprising a front and rear support housing part (27, 28), whereby the two support housing parts (27, 28) are coupled together in a connecting section (31) via a coupling device (32) in their longitudinal extension in two different longitudinal positions; forming a throughput (37) in the connecting section (31) of the front support housing part (27) to produce a flow connection with a holding chamber (29) of the front support housing part (27) in the first coupled longitudinal position; arranging a cartridge (3) containing medicine (14), a needle arrangement (6) arranged upstream of the cartridge (3) and a drive unit (4) interacting with the cartridge (3) in the support housing (2); sealing an opening (35) formed in the distal end (11) of the front support housing part (27) and designed for the passage of a needle end (21) of a cannula (20) with a penetratable sealing stopper (36) in sealing position with the support housing part (27); arranging a peripheral sealing element (43) on an end of the rear support housing part (28) facing the front support housing part (27), whereby the sealing element (43) is applied in a sealing manner both onto an external surface (44) of the cartridge (3) and also an internal surface (45) of the front support housing part (27); performing the sterilisation of the holding chamber (29) formed and sealed in the front support housing part (27) and the needle arrangement (6) mounted therein by means of gassing with ethylene oxide via the throughput (37) formed in the connecting section (31); interrupting the flow connection between the sterilised holding chamber (29) and the outer environment via the throughput (37) formed in the connecting section (31).
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Specification