JPWO2020239844A5

JPWO2020239844A5 -

Info

Publication number: JPWO2020239844A5
Application number: JP2021570345A
Authority: JP
Publication date: 2023-04-13
Anticipated expiration: 2040-05-27

Claims

An assembly for a drug delivery device comprising:
a housing unit comprising a housing (11) for receiving a drug reservoir;
a cap (12), wherein the cap (12) is releasably securable to the housing (11);
The assembly can be in at least two different states: a capped state in which the cap (12) is fixed relative to the housing (11), and a state in which the cap (12) is released from the housing (11), e.g. 11) and a decapped state that is separate from
The cap (12) includes an outer member (21) configured to be grasped by a user to release, e.g., separate, the cap (12) from the housing (11),
the outer member (21) is rotatable relative to the housing (11) to release the cap (12) from the housing (11);
The assembly converts rotational movement of the outer member (21) relative to the housing (11) to axial movement of the outer member (21) relative to the housing (11) when switching from the capped state to the uncapped state. including a mechanical interface configured to
The mechanical interface includes at least one guide track (30) configured to guide movement of the outer member (21) relative to the housing (11) when the assembly is switched from the capped state to the uncapped state. ) contains or is formed by
The guide track (30) has at least a first sloped region (30A) and a second sloped region (30B),
When the assembly is switched from the capped state to the uncapped state, the first tilted region (30A) is positioned on the outer member (21) before the second tilted region (30B) guides the movement of the outer member (21). Guide the movement of (21),
The first tilt area (30A) guides the movement such that when the outer member (21) rotates through an angle A, the outer member (21) is axially displaced a first distance away from the housing (11). death,
A second tilt area (30B) guides the movement such that when the outer member (21) rotates through an angle A, the outer member (21) is axially displaced a second distance away from the housing (11). the first slanted region (30A) and the second slanted region (30B) are aligned with each other such that
the second distance is less than the first distance;
Said assembly, wherein the mechanical interface comprises at least one interaction feature, said interaction feature mechanically cooperating with the guide track (30).

Rotational movement of the outer member (21), e.g. about the longitudinal axis of the assembly, through the entirety of the first tilt area (30A) causes the angular extent α of the first tilt area (30A) to be define,
Rotational movement of the outer member (21), e.g. about the longitudinal axis of the assembly, through the entire second tilt region (30B) causes the angular extent β of the second tilt region (30B) to be define,
2. The assembly of claim 1, wherein angular range [alpha] is less than angular range [beta].

3. An assembly according to claim 2, wherein angle A is less than or equal to angle range [alpha] and/or greater than or equal to 0.5[alpha].

An assembly according to any preceding claim, wherein the first sloped region (30A) is steeper than the second sloped region (30B).

The guide track (30) has a third slope area (30C),
the third tilt region (30C) guides movement of the outer member (21) after the second tilt region (30B) when the assembly is switched from the capped state to the uncapped state;
A third tilt area (30C) guides the movement such that when the outer member (21) rotates through an angle A, the outer member (21) is axially displaced away from the housing (11) a third distance. the first sloped region (30A), the second sloped region (30B), and the third sloped region (30C) are aligned with each other such that
An assembly according to any one of claims 1 to 4 when dependent on claim 2, wherein the second distance is less than the third distance.

Rotational movement of the outer member (21), e.g. about the longitudinal axis of the assembly, through the entirety of the third tilt region (30C) defines an angular range γ associated with the third tilt region (30C). define,
6. An assembly according to claim 5, wherein the angular range γ is smaller than the angular range β and/or larger than the angular range α.

An assembly according to claim 5 or 6, wherein the third sloped region (30C) is steeper than the second sloped region (30B).

An assembly according to any preceding claim, wherein the inclination of the guide track (30) in the second inclination region (30B) is constant.

An assembly according to any preceding claim, wherein the inclination of the guide track (30) in the first inclination area (30A) is constant.

the cap (12) includes an inner member (24) and the housing unit includes a reservoir having a discharge opening;
A shield (1) is removably connected to the reservoir,
The inner member (24) is connected to the shield (1) when the cap (12) is connected to the housing (11) so that when the cap (12) is removed from the housing (11) the inner member An assembly according to any preceding claim, wherein (24) removes the shield (1) from the reservoir.

The force required to move the shield (1) axially with respect to the reservoir changes during removal of the shield (1) from the reservoir, the force being The guide has a maximum value that occurs and is contained within the range of motion defined by the second tilt area (30B) during removal of the cap (12) from the housing (11). 11. An assembly according to claim 10, wherein the track (30) is configured.

The shield (1) comprises a rigid outer region (2B) and an elastic inner region (2A),
12. The claim 10 or 11, wherein the rigid outer section (2B) faces the inner member (24) and the elastic inner section (2A) faces the discharge opening of the reservoir. assembly.

An assembly according to any one of the preceding claims, wherein the guide track (30) is arranged on a portion of the cap (12).

The assembly of any one of claims 1-13, wherein the assembly is an auto-injector.

The cap (12) includes an intermediate member (27) with a mechanical interface established between the outer member (21) and the intermediate member (27), wherein:
- interaction features are located on the outer member (21) and guide tracks (30) are located on said intermediate member (27); or - interaction features are located on said intermediate member (27) and guide a track (30) is positioned on the outer member (21);
An assembly according to any one of claims 1-14.

A cap (12) according to any one of claims 1 to 15, wherein the cap (12) comprises an intermediate member (27), the cap (12) being connected to the housing (11) via the intermediate member (27). Assemblies as described.

17. Claim 16, wherein the connection between the intermediate member (27) and the housing (11) requires a force to release which is less than the maximum force required to move the shield (1) axially. assembly.

A drug delivery device comprising an assembly according to any one of claims 1-17 and a drug.