Abstract: The present disclosure relates to an operation aid for a medication delivery device, which is configured to alleviate the operation of an actuator of the medication delivery device. Furthermore, a system comprising a medication delivery device and an operation aid is disclosed.

Abstract: A fuel cell stack assembly (101) comprising a fuel cell stack (102) comprising one or more fuel cells and a retaining member (100) comprising a first engaging region (104) that engages a first end face (110) of the fuel cell stack (102), a second engaging region (106) that engages a second opposing end face (112) of the fuel cell stack (102, and a joining region (108) configured to bias the first engaging region (104) towards the second engaging region (106). The retaining member (106) defines a fluid chamber (118) for communicating a fluid to or from the fuel cell stack (102).

Abstract: A piston rod for a drug delivery device comprises a main body and an engagement means for engaging the piston rod with a part of the drug delivery device. The engagement means are retractable relatively the main body for enabling a disengagement of the engagement means from the part of the drug delivery device.

Abstract: A fuel cell stack assembly (101) comprising a fuel cell stack (102) comprising one or more fuel cells and a retaining member (100) comprising a first engaging region (104) that engages a first end face (110) of the fuel cell stack (102), a second engaging region (106) that engages a second opposing end face (112) of the fuel cell stack (102, and a joining region (108) configured to bias the first engaging region (104) towards the second engaging region (106). The retaining member (106) defines a fluid chamber (118) for communicating a fluid to or from the fuel cell stack (102).

Abstract: A fuel cell stack assembly (100) comprising a first encapsulation member (102) comprising a first end plate (106) and two side walls (108) extending transversely from the first end plate (106). The distal portion of each of the side walls (108) comprises a lip (110). The fuel cell stack assembly (100) also comprises a second encapsulation member (104) comprising a second end plate (105) and two rims (118). One or more fuel cells (103) located between the first end plate (106) and second end plate (105). Each of the two lips (110) corresponds with one of the two rims (118) to define a bonding plane that extends away from the one or more fuel cells (103).

Abstract: A fuel cell stack assembly comprising: a first encapsulation member (302) comprising a first end plate and two side walls extending transversely from the first end plate; a second encapsulation member (304) comprising a second end plate; one or more fuel cells (330) located between the first end plate and second end plate; and two locking members (310) that are configured to engage with a respective side wall of the first encapsulation member (302) and the second encapsulation member (304), in order to retain the first end plate and the second end plate in a fixed relative position, wherein the side walls of the first encapsulation member (302) are each configured to: engage with the second encapsulation member (304) in order to provide a compression force to the one or more fuel cells (330), and receive the respective locking member (310) in a direction that is parallel to the plane of the one or more fuel cells (330).

Abstract: A fuel cell stack assembly (200) comprising: a first encapsulation member (202) comprising a first end plate (204) and two side walls (208) extending transversely from the first end plate (204); a second encapsulation member (204) comprising a second end plate (205); and one or more fuel cells located between the first end plate (206) and second end plate (205), wherein the side walls (208) of the first encapsulation member (202) are, or the second encapsulation member (204) is, deformable in order for the first encapsulation member (202) to engage with the second encapsulation member (204) and retain the first end plate (206) and the second end plate (205) in a fixed relative position.

Abstract: A piston rod for a drug delivery device comprises a main body and an engagement means for engaging the piston rod with a part of the drug delivery device. The engagement means are retractable relatively the main body for enabling a disengagement of the engagement means from the part of the drug delivery device.

Abstract: The present disclosure relates to an operation aid for a medication delivery device, which is configured to alleviate the operation of an actuator of the medication delivery device. Furthermore, a system comprising a medication delivery device and an operation aid is disclosed.