Patent ID: 9095394
Filing Date: 2015-08-04
Classification: A61B,A61M

Abstract:
1. A delivery system comprising: a reservoir having a proximal end and a distal end, adapted for storing at least a first portion of a fluid, and configured for applying a distal force on the first portion of the fluid toward the distal end; a piston rod shaft having a proximal end, a distal end, and a first dimension, and configured for reciprocally moving through the reservoir in a distal direction and a proximal direction; an end portion connected to the distal end of the piston rod shaft, the end portion having a second dimension larger than the first dimension of the piston rod shaft; a sleeve having an upper opening in communication with the distal end of the reservoir, the upper opening having a third dimension configured to permit passage therethrough of the piston rod shaft, and a lower opening, having the second dimension, configured to be closed by insertion therein of the end portion; and a delivery chamber in communication with the lower opening of the sleeve and configured for holding a second portion of the fluid; wherein the sleeve, the piston rod shaft, and the end portion are configured to elect the second portion of the fluid from the delivery chamber when the piston rod shaft and the end portion are advanced in the distal direction; and wherein the sleeve, the piston rod shaft, and the end portion are configured to allow a portion of the first portion of the fluid in the reservoir, under the distal force applied to the first portion of the fluid in the distal direction by the configuration of the reservoir, to move in the distal direction into the delivery chamber, when the piston rod shaft and the end portion are retracted in the proximal direction.