Intravitreal injection device and system
An intravitreal injection system for administering a pharmacological agent formulation to an intravitreal compartment of an eye, comprising (i) an injection member coupled to, or comprising, an internal formulation chamber that is adapted to receive and contain the pharmacological agent formulation therein, (ii) a needle having a first end that is in communication with a formulation chamber and a second injection end, and (iii) a movable platform for positioning the system on the eye, guiding the needle, and limiting the penetration depth of the needle into the eye.
1. An intravitreal injection device, comprising:
an injection member having a formulation chamber, a needle and a transitional guide platform, said formulation chamber being adapted to receive and contain a pharmacological agent formulation therein, said needle having a first end that is in communication with said formulation chamber and a second ejection end, said transitional guide platform comprising a compressible guide platform, said compressible guide platform comprising a non-reticulated closed-cell foam having a predetermined degree of flexibility, whereby said transitional guide platform substantially conforms to the surface of a sclera of an eye when in an engagement position thereon.
2. An intravitreal injection device, comprising:
an injection member having a formulation chamber, a needle and a transitional guide platform, said formulation chamber being adapted to receive and contain a pharmacological agent formulation therein, said needle having a first end that is in communication with said formulation chamber and a second ejection end, said transitional guide platform comprising a compressible guide platform, said compressible guide platform comprising a reticulated open-cell foam having a predetermined degree of flexibility, whereby said transitional guide platform substantially conforms to the surface of a sclera of an eye when in an engagement position thereon.
3. An intravitreal injection device, comprising:
an injection member having a formulation chamber, a needle and a transitional guide platform, said formulation chamber being adapted to receive and contain a pharmacological agent formulation therein, said needle having a first end that is in communication with said formulation chamber and a second ejection end, said transitional guide platform comprising a compressible guide platform, said compressible guide platform comprising a reticulated open-cell foam, said reticulated open-cell foam comprising a polymeric material selected from the group consisting of polyvinylchloride, polyurethane, polystyrene, polypropylene, polyethylene, crosslinked polyethylene, ethyl vinyl acetate, polyesters, vinyl nitrile neoprene and mixtures thereof, said compressible guide platform having a predetermined degree of flexibility, whereby said transitional guide platform substantially conforms to the surface of a sclera of an eye when in an engagement position thereon.