AUTOINJECTOR SYSTEM

摘要

An autoinjector system for injecting a fluid medicament into a patient includes a re-usable autoinjector, and a disposable cassette loaded with a hypodermic syringe pre-filled with a fluid medicament. The autoinjector includes a first motor for injecting a needle of the hypodermic syringe into the patient and a second motor for expelling the fluid medicament from the syringe.

主权项

1. A medicament delivery system, comprising:
a housing; and a disposed in the housing;
a syringe including a needle, a fluid chamber in fluid communication with the needle and adapted to contain a fluid medicament, and a stopper disposed in the fluid chamber for expelling the medicament through the needle, at least a portion of the syringe disposed in the sleeve, the syringe movable between a proximal position where the needle is concealed within the housing and a distal position where at least a part of the needle is extended out of the housing; a drive mechanism operably coupled to move the syringe from the proximal position to the distal position and to move the stopper to expel the medicament out of the needle; and at least one retaining element disposed adjacent to the sleeve and movable between a first position and a second position radially offset from the first position, wherein, when the at least one retaining element is in the first position, the syringe does not move relative to sleeve, and when the at least one retaining element is in the second position, the syringe moves relative to the sleeve from the proximal position to the distal position.