Hold assistance device for use with a medicament delivery device

A medicament delivery system comprising a hold assistance device and a medicament delivery device,

• wherein the hold assistance device comprises:
• a housing configured to be coupled to the medicament delivery device, the housing comprising a proximal end and a distal end that define an axis between the proximal end and the distal end;
• and
• a holding element coupled to the housing and moveable relative to the housing along an axis of the housing between a disengaged position and an engaged position,
• wherein the holding element is disposed outwardly from the axis in the disengaged position and is disposed inwardly towards the axis in the engaged position and is configured in the engaged position such that the holding element can engage with an aperture or a recess in a needle cover of a medicament delivery device when the hold assistance device is coupled thereto, to resist movement of the needle cover relative to the housing, and
• wherein the medicament delivery device comprises:
• a main body configured to receive a medicament cartridge and comprising a proximal end and a distal end;
• a needle for delivery of medicament from the medicament cartridge disposed towards the distal end of the main body;
• a needle cover axially movable relative to the main body between (i) an extended position in which the needle cover extends from the distal end of the main body and covers a distal end of the needle which protrudes from the main body and (ii) a retracted position in which the needle cover is arranged in a proximal position relative to the extended position such that the distal end of the needle protrudes from a distal end of the needle cover, wherein the needle cover comprises at least one aperture or recess towards the distal end of the needle cover;
• and
• a needle cover biasing member configured to bias the needle cover axially in a distal direction towards the extended position,
• wherein the housing of the hold assistance device is configured to be coupled to the main body, and when the housing is coupled to the main body, the holding element, in the engaged position, is configured to engage with the aperture or recess in the needle cover in the retracted position to resist movement of the needle cover axially in the distal direction towards the extended position.

A method of operating a medicament delivery system comprising a hold assistance device and a medicament delivery device,

• wherein the hold assistance device comprises:
• a housing configured to be coupled to the medicament delivery device, the housing comprising a proximal end and a distal end that define an axis between the proximal end and the distal end;
• and
• a holding element coupled to the housing and moveable relative to the housing along an axis of the housing between a disengaged position and an engaged position,
• wherein the holding element is disposed outwardly from the axis in the disengaged position and is disposed inwardly towards the axis in the engaged position and is configured in the engaged position such that the holding element can engage with an aperture or a recess in a needle cover of a medicament delivery device when the hold assistance device is coupled thereto, to resist movement of the needle cover relative to the housing, and
• wherein the medicament delivery device comprises:
• a main body configured to receive a medicament cartridge and comprising a proximal end and a distal end;
• a needle for delivery of medicament from the medicament cartridge disposed towards the distal end of the main body;
• a needle cover axially movable relative to the main body between:
• an extended position in which the needle cover extends from the distal end of the main body and covers a distal end of the needle which protrudes from the main body;
• and a retracted position in which the needle cover is arranged in a proximal position relative to the extended position such that the distal end of the needle protrudes from a distal end of the needle cover, wherein the needle cover comprises at least one aperture or recess towards the distal end of the needle cover;
• and
• a needle cover biasing member configured to bias the needle cover axially in a distal direction towards the extended position,
• wherein the housing of the hold assistance device is configured to be coupled to the main body, and when the housing is coupled to the main body, the holding element, in the engaged position, is configured to engage with the aperture or recess in the needle cover in the retracted position to resist movement of the needle cover axially in the distal direction towards the extended position, and
• wherein the method comprises:
• coupling the housing to the main body;
• moving the needle cover from the extended position to the retracted position;
• and
• moving the holding element into the engaged position such that the holding element engages with the aperture or recess in the needle cover to resist movement of the needle cover axially in the distal direction towards the extended position.