| CPC A61M 5/3243 (2013.01) [A61M 5/3202 (2013.01); A61M 2205/0216 (2013.01)] | 30 Claims |
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1. A medicament delivery device comprising:
a body;
a needle for injecting a medicament, the needle disposed at a distal end of the medicament delivery device;
a needle cover axially movable relative to the body between an extended position, in which a distal end of the needle cover is distal to a distal end of the needle, and a retracted position for dispensing the medicament from the medicament delivery device, wherein when the needle cover is in the retracted position the distal end of the needle is distal to the distal end of the needle cover, the needle cover comprising one or more first slots and one or more second slots; and
a carrier configured to support a syringe such that when the syringe is disposed in the carrier, an inward protrusion located at a distal end of the carrier engages a neck portion of the syringe, the carrier configured to be disposed within the needle cover and comprising one or more resilient members,
wherein each resilient member of the one or more resilient members are is configured to (i) engage with a respective slot of the one or more first slots when the needle cover is in the extended position, and (ii) enter a respective slot of the one or more second slots after a proximal movement of the needle cover relative to the body from the extended position to an intermediate position between the extended position and the retracted position.
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16. A medicament delivery device comprising:
a body;
a needle for injecting a medicament, the needle disposed at a distal end of the medicament delivery device;
a needle cover configured to be moved in a proximal direction into the body of the medicament delivery device to expose a distal end of the needle from a distal end of the needle cover;
a carrier disposed within the needle cover such that when a syringe is disposed in the carrier, an inward protrusion located at a distal end of the carrier engages a neck portion of the syringe, the carrier comprising one or more flexible arms, each of the one or more flexible arms configured such that
prior to a movement of the needle cover relative to the body of the medicament delivery device, the one or more flexible arms are retained in a respective first slot, aperture, or recess in the needle cover;
during an initial portion of the movement of the needle cover relative to the body, the one or more flexible arms are forced out of the respective first slot, aperture, or recess in the needle cover; and
during a subsequent portion of the movement of the needle cover relative to the body, the one or more flexible arms move out of engagement with the needle cover to reduce a force required to move the needle cover in the proximal direction into the body of the medicament delivery device.
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