Drug delivery device with needle actuation mechanism
First Claim
1. A delivery unit of a drug delivery device, the delivery unit comprising a subcutaneous delivery mechanism having a subcutaneous delivery member and a subcutaneous delivery member actuation mechanism being operable to move the subcutaneous delivery member between a retracted position and an extended position, the actuation mechanism comprising a rotary member having an engagement member rotatable relative to a support member, and an actuator comprising a pivot portion and an engagement portion pivotally connected to the support member via the pivot portion, wherein the actuation mechanism is actuated by rotation of the rotary member and wherein the engagement member and engagement portion are configured to engage upon rotation of the rotary member to pivot an actuation portion of the actuator between first and second positions and to thereby move the subcutaneous delivery member between the corresponding retracted and extended positions, wherein the rotary member comprises a first track ad a second track around an outer circumference of the rotary member, the first track being configured to guide the actuator in the first direction of rotation (R+) of the rotary member and the second track being configured to guide the actuator in the second direction of rotation (R−
- ) of the rotary member, and wherein the engagement portion comprises a cam portion operable to axially displace the actuator from the first track to the second track.
2 Assignments
0 Petitions
Accused Products
Abstract
A delivery unit (2) of a drug delivery device (1), the delivery unit (2) comprising a subcutaneous delivery mechanism (9) having a subcutaneous delivery member (92), and a subcutaneous delivery member actuation mechanism (10) being operable to move the subcutaneous delivery member (92) between a retracted position and an extended position. The actuation mechanism (10) comprises a rotary member (102) having an engagement member (104) rotatable relative a support member (14), and an actuator (106) comprising a pivot portion (10A) and an engagement portion (10B) pivotally connected to the support member via the pivot portion. The engagement member (104) and engagement portion (10B) are configured to engage upon rotation of the rotary member to pivot the actuator between first and second positions and to thereby move the subcutaneous delivery member (92) between the corresponding retracted and extended positions. In an embodiment, the needle actuation mechanism may comprise a reuse protection.
34 Citations
19 Claims
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1. A delivery unit of a drug delivery device, the delivery unit comprising a subcutaneous delivery mechanism having a subcutaneous delivery member and a subcutaneous delivery member actuation mechanism being operable to move the subcutaneous delivery member between a retracted position and an extended position, the actuation mechanism comprising a rotary member having an engagement member rotatable relative to a support member, and an actuator comprising a pivot portion and an engagement portion pivotally connected to the support member via the pivot portion, wherein the actuation mechanism is actuated by rotation of the rotary member and wherein the engagement member and engagement portion are configured to engage upon rotation of the rotary member to pivot an actuation portion of the actuator between first and second positions and to thereby move the subcutaneous delivery member between the corresponding retracted and extended positions, wherein the rotary member comprises a first track ad a second track around an outer circumference of the rotary member, the first track being configured to guide the actuator in the first direction of rotation (R+) of the rotary member and the second track being configured to guide the actuator in the second direction of rotation (R−
- ) of the rotary member, and wherein the engagement portion comprises a cam portion operable to axially displace the actuator from the first track to the second track.
- View Dependent Claims (2, 4, 5, 6, 7, 8, 9, 10, 11)
- 3. A delivery unit of a drug delivery device, the delivery unit comprising a subcutaneous delivery mechanism having a subcutaneous delivery member and a subcutaneous delivery member actuation mechanism being operable to move the subcutaneous delivery member between a retracted position and an extended position, the actuation mechanism comprising a rotary member having an engagement member rotatable relative to a support member, and an actuator comprising a pivot portion and an engagement portion pivotally connected to the support member via the pivot portion, wherein the actuation mechanism is actuated by rotation of the rotary member and wherein the engagement member and engagement portion are configured to engage upon rotation of the rotary member to pivot an actuation portion of the actuator between first and second positions and to thereby move the subcutaneous delivery member between the corresponding retracted and extended positions, wherein the actuation mechanism comprises an elastically deformable member allowing relative elastic movement between the engagement portion of the actuator and the engagement member of the rotary member, and wherein the deformable member is a deformable portion arranged on the actuator and is positioned between the engagement portion and the pivot portion of the actuator.
Specification