METHODS OF PERFORMING RETROBULBAR INJECTIONS

摘要

A syringe and needle assembly includes a needle that extends through the barrel of the syringe and is attached to a proximal portion of the syringe. The distal end of the needle extends through a sleeve attached to the distal end of the syringe. The proximal end of the needle includes a spring which biases the needle proximally, so that the distal tip of the needle is normally retracted within the sleeve. The assembly can be used for injections in portions of a patient's body including delicate tissues that could be damaged if contacted by the needle tip

主权项

1. A method of performing an injection into the orbital fat of a patient, the method comprising:
providing a needle and a cannula, the cannula having a distal end, the needle having a sharpened distal end and a lumen extending proximally from said sharpened distal end, the needle positioned and longitudinally movable within the cannula between a distal position at which the needle sharpened distal end is distal of the cannula distal end, and a proximal position at which the needle sharpened distal end is proximal of the cannula distal end; moving the needle into the distal position; inserting the needle and the cannula into the orbital fat; moving the needle into the proximal position; and injecting a fluid through the distal end of the needle lumen, through the distal end of the cannula, and into the orbital fat.