Medicament Delivery Device

A medicament delivery device for injecting medicament, wherein the medicament delivery device comprises:

• a body having a proximal end and an opposed distal end;
• a needle for injecting medicament;
• an actuation member movable relative to the body from a first position to a second position for dispensing medicament from the needle;
• a locking member configured to rotate relative to the body from a pre-use position, in which the actuation member is prevented from moving to the second position, to a use position in which the actuation member is permitted to move to the second position;
• a cap removably attached to the body, wherein when the cap is attached to the body, the cap is rotationally coupled to the body and covers the distal end of the body for preventing access to the needle;
• and
• a coupling configured to rotationally couple the locking member and the cap together when the cap is attached to the body, and thereby to rotationally couple the locking member to the body, so as to prevent the locking member from rotating from the pre-use position to the use position, the coupling being configured to rotationally decouple the locking member from the cap upon removal of the cap from the body so as to permit the locking member to be rotated from the pre-use position to the use position,
• wherein the coupling comprises a distal portion affixed to the cap and a proximal portion affixed to the locking member, and
• wherein the coupling comprises a severable connection positioned between the distal portion and the proximal portion, wherein the severable connection is configured to sever or tear upon removal of the cap from the body to permit the locking member to be rotated from the pre-use position to the use position, and wherein the distal portion and the proximal portion are configured to separate from each other when the severable connection being severed or torn.

A method of using a medicament delivery device for injecting medicament, the medicament delivery device comprising:

• a body having a proximal end and an opposed distal end;
• a needle for injecting medicament;
• an actuation member movable relative to the body from a first position to a second position for dispensing medicament from the needle;
• a locking member configured to rotate relative to the body from a pre-use position, in which the actuation member is prevented from moving to the second position, to a use position in which the actuation member is permitted to move to the second position;
• a cap removably attached to the body, wherein when the cap is attached to the body then the cap covers the distal end of the body for preventing access to the needle, the cap being rotationally coupled to the body when the cap is attached to the body;
• and
• a coupling configured to rotationally couple the locking member and the cap together when the cap is attached to the body, and thereby to rotationally couple the locking member to the body, so as to prevent the locking member from rotating from the pre-use position to the use position, the coupling being configured to rotationally decouple the locking member from the cap as the cap is removed from the body so as to permit the locking member to be rotated from the pre-use position to the use position,
• wherein the coupling comprises a distal portion affixed to the cap and a proximal portion affixed to the locking member, and
• wherein the coupling comprises a severable connection positioned between the distal portion and the proximal portion, wherein the severable connection is configured to sever or tear upon removal of the cap from the body to permit the locking member to be rotated from the pre-use position to the use position, and wherein the distal portion and the proximal portion are configured to separate from each other when the severable connection is severed or torn;
• the method comprising:
• removing the cap from the body, thereby causing the coupling to rotationally decouple the cap from the locking member so as to permit the locking member to be rotated from the pre-use position to the use position.

A medicament delivery device for injecting medicament, wherein the medicament delivery device comprises:

• a body having a proximal end and an opposed distal end;
• a needle for injecting medicament;
• an actuation member movable relative to the body from a first position to a second position for dispensing medicament from the needle;
• a locking member configured to rotate relative to the body from a pre-use position, in which the actuation member is prevented from moving to the second position, to a use position in which the actuation member is permitted to move to the second position;
• a cap removably attached to the body, wherein when the cap is attached to the body then the cap covers the distal end of the body for preventing access to the needle, the cap being rotationally coupled to the body when the cap is attached to the body;
• and
• a collar arranged external to the body, the collar comprising a proximal portion affixed to the locking member and a distal portion affixed to the cap so as to rotationally couple the locking member and the cap together when the cap is attached to the body, and thereby to rotationally couple the locking member to the body, so as to prevent the locking member from rotating from the pre-use position to the use position, the collar comprising a line of strength discontinuity or weakness configured to sever or tear upon removal of the cap from the body so as to rotationally decouple the locking member from the cap and thereby permit the locking member to be rotated from the pre-use position to the use position,
• wherein the line of strength discontinuity or weakness is positioned between the distal portion and the proximal portion, and wherein the distal portion and the proximal portion are configured to separate from each other when the line of strength discontinuity or weakness is severed or torn.