Abstract: Provided is an anesthetic composition for locally administering a local anesthetic agent to a subject in need thereof. The anesthetic composition has a lipid based complex prepared by hydrating a lipid cake containing a local anesthetic agent and a lipid mixture with an aqueous buffer solution at a pH higher than 5.5. Also provided is a method to prepare an anesthetic composition using a simpler and more robust for large-scale manufacture and for providing a high molar ratio of local anesthetic agent to phospholipid content as compared to the prior art. This anesthetic composition has a prolonged duration of efficacy adapted to drug delivery.

Abstract: A drip syringe backpack frame is provided which includes an inverted T-shaped backpack plate adapted for releasable coupling to a user by means of a waist belt and a pair of shoulder straps. The inverted T-shaped backpack plate includes a pair of anchor sleeves disposed in longitudinally spaced relationship for securing an extendable drip syringe suspension rod thereto. The extendable suspension rod is formed by a longitudinally extended tubular outer tube in which is telescopically received an inner rod. The distal end of the inner rod is adapted for supporting a drip syringe solution container.