Injector apparatus with fixed plunger and method of use

摘要

Disclosed herein is an injector device for delivering an implant, the device including a retracting element, a cannula needle, and a plunger. The device may comprise an latch that, when actuated by a user, causes the retracting element to move the cannula needle away from the delivery site, allowing the plunger to eject the implant into the site. The device may be configured for intraocular drug delivery.

主权项

1. An injector device comprising:
a syringe barrel defining a central axial cavity, and having a distal end and a proximal end; a cannula needle having a distal end and a proximal end and defining a central axial cavity in communication with the central axial cavity of the syringe barrel; a retracting element coaxially coupled to the proximal end of the cannula needle adapted to retract the cannula needle into the syringe barrel; a plunger having a distal end and a proximal end, disposed in the central axial cavity of the syringe barrel at a fixed position therein, and, when the cannula needle retracts, extending through the central axial cavity of the cannula needle and beyond the distal end of the syringe barrel; and an implant disposed in the central axial cavity of the cannula needle between the plunger rod and the distal end of the needle.