Medical injector and adapter for coupling a medicament container and an actuator

A medical injector, comprising:

• a medicament container configured to be coupled to a needle and contain a medicament, the medicament container including a movable element adapted to force the medicament from the medicament container;
• a non-manual actuator including a drive element configured to apply a movement force;
• an adapter coupled to the medicament container and the non-manual actuator, the adapter including a proximal end portion configured to engage the drive element and a distal end portion coupled to the proximal end portion and including a surface configured to engage the movable element, the distal end portion defining an outer diameter sized to slide within the medicament container;
• and
• a coupler including a protrusion defining a lumen for receiving the proximal end portion or the distal end portion of the adapter, at least one coupling member configured to removably couple the adapter to the medicament container, and a connector configured to removably couple the adapter to the non-manual actuator,
• wherein when the drive element applies a movement force to the proximal end portion of the adapter, the distal end portion of the adapter slides within the medicament container and drives the movable element, which thereby forces the medicament from the medicament container to inject the medicament into a patient.

An adapter assembly for coupling a medicament container and a non-manual actuator, the medicament container including a movable element adapted to force a medicament from the medicament container, and the non-manual actuator including a drive element adapted to apply a movement force, the adapter assembly comprising:

• an adapter further comprising:
• a proximal end portion configured to engage the drive element of the non-manual actuator;
• and
• a distal end portion coupled to the proximal end portion and including a surface configured to engage the movable element of the medicament container, the distal end portion defining an outer diameter sized to slide within the medicament container;
• and
• a coupler including a protrusion defining a lumen for receiving the proximal end portion or the distal end portion, at least one coupling member configured to removably couple the adapter to the medicament container, and a connector configured to removably couple the adapter to the non-manual actuator,
• wherein when the drive element applies a movement force to the proximal end portion, the distal end portion slides within the medicament container and drives the movable element, which thereby forces the medicament from the medicament container.

An adapter for coupling a medicament container and a non-manual actuator, the medicament container including a spherical piston defining a first radius of curvature and adapted to force a medicament from the medicament container, and the non-manual actuator including a drive element adapted to apply a movement force, the adapter comprising:

• a proximal end portion configured to engage the drive element of the non-manual actuator;
• and
• a distal end portion coupled to the proximal end portion and including a spherical surface having a second radius of curvature equal to the first radius of curvature, the spherical surface configured to engage the spherical piston of the medicament container, the distal end portion defining an outer diameter sized to slide within the medicament container,
• wherein when the drive element applies a movement force to the proximal end portion, the distal end portion slides within the medicament container and drives the spherical piston, which thereby forces the medicament from the medicament container.