Autoinjector apparatus

An apparatus for injection of a therapeutic product, the apparatus comprising:

• an autoinjector;
• and
• a single-use cassette for use with the injector, the cassette comprising:
• a housing;
• an inner sleeve disposed in the housing and movable between first and second positions;
• a syringe disposed in the inner sleeve;
• a lock cap for securing the syringe in the inner sleeve, the lock cap including an elastomeric bumper, the lock cap affixed to a distal end of the inner sleeve with the elastomeric bumper contacting a distal end of the syringe, wherein the distal end of the inner sleeve comprises at least two receptacles and the lock cap comprises at least arm members, each inserted into one of the receptacles;
• and
• a shield remover extending through an opening in a proximal end of the housing for removing a needle shield from the syringe, wherein the shield remover comprises a spring-biased tab, the tab disposed within an aperture defined in a wall of the housing to prevent removal of the shield remover from the cassette, and wherein the shield remover comprises an elongated body having a proximal end and a distal end, the distal end comprising at least one flexible tongue that expands outwardly when the shield remover is removed from the cassette to prevent the shield remover from being reinserted into the cassette.

An apparatus for injection of a therapeutic product, the apparatus comprising:

• an autoinjector;
• and
• a single-use cassette for use with the injector, the cassette comprising:
• a housing;
• a sleeve disposed in the housing and movable between first and second positions;
• a syringe disposed in the sleeve;
• and
• a shield remover extending through an opening in a proximal end of the housing for removing a needle shield from the syringe, the shield remover comprising a spring-biased tab, the tab disposed within an aperture defined in a wall of the housing to prevent removal of the shield remover from the cassette;
• wherein the autoinjector comprises a pin for pushing the tab out of the aperture defined in the wall of the housing when the cassette is placed in the injector to thereby allow the shield remover to be removed from the cassette.

A single-use cassette for use with an autoinjector, the cassette comprising:

• a housing;
• a sleeve disposed in the housing and movable between first and second positions, wherein the sleeve is capable of having a syringe disposed therein;
• and
• a shield remover extending through an opening in a proximal end of the housing for removing a needle shield from the syringe, the shield remover comprising an elongated body having a proximal end and a distal end, the distal end comprising at least one flexible tongue that expands outwardly when the shield remover is removed from the cassette to prevent the shield remover from being reinserted into the cassette.

An apparatus for injection of a therapeutic product, the apparatus comprising:

• an autoinjector;
• and
• a single-use cassette for use with the injector, the cassette comprising:
• a housing;
• a sleeve disposed in the housing and movable between first and second positions;
• a syringe disposed in the sleeve;
• and
• a shield remover extending through an opening in a proximal end of the housing for removing a needle shield from the syringe, the shield remover comprising an elongated body having a proximal end and a distal end, the distal end comprising at least one flexible tongue that expands outwardly when the shield remover is removed from the cassette to prevent the shield remover from being reinserted into the cassette.