Patent ID: 8500699
Filing Date: 2013-08-06
Classification: A61M,Y10T

Abstract:
1. An apparatus comprising: (a) a syringe for delivery of a liquid, comprising an inner surface, a distal portion, a proximal portion, and a central axis extending therethrough, the syringe being configured to engage a plunger, wherein the plunger is in direct communication with the inner surface of tile syringe; (b) a needle in communication with the syringe, the needle comprising a proximal needle portion, a distal needle portion, and a lumen extending therethrough; (c) a guard, the guard being positioned within the syringe, wherein the guard is configured to extend from a retracted position to an extended position; (d) an elongated adapter in communication with the syringe, wherein the elongated adapter is separable from the plunger and is separate from the syringe prior to assembly; and (e) a spring in communication with the guard, the spring having a first configuration with a first spring length when the guard is in the retracted position prior to engagement of the plunger with the syringe and a second configuration with a second spring length when the guard is in the extended position, the second spring length being greater than the first spring length.