Abstract: This invention provides a device for delivering medical implants, the device comprising a guide, a mandrel disposed internal to the guide, and a sleeve, wherein the sleeve is disposed external to the guide and is attached to the mandrel for movement therewith relative to the guide. Included among the various embodiments are devices configured for abutting a proximal surface against the palm of a user and presenting finger tabs for retraction of the guide relative to the mandrel. Optionally, a device of the present invention is a dual-mode device configured for being operated independently in each of an ejection mode and an injection mode. Optionally, a device of the present invention is configured for delivering an implant to the eye of a subject. Optionally, the eye implant is a retinal implant. Optionally, the implant comprises retinal cells.

Abstract: This invention provides a device for delivering substances such as medical implants and tissues. The device comprises a mandrel and a mandrel guide whereby substances are delivered by retracting the mandrel guide relative to the mandrel. Included among the various embodiments are devices specialized for delivering retinal pigment epithelial (RPE) cells or nanoplates containing RPE cells to the retina, devices with precise control of delivery, devices with specialized mandrels and/or nozzles, and multifunctional devices adapted to provide additional functions such as infusion and/or suction, illumination, and diathermy.