Patent ID: 9101713
Filing Date: 2015-08-11
Classification: A61M

Abstract:
1. A syringe system comprising: a syringe body comprising a hollow lumen and a distal end, the syringe body being configured to house a fluid therein; a vacuum chamber disposed within the hollow lumen of the syringe body; a first plunger connected to a distal portion of the vacuum chamber within the hollow lumen of the syringe body, the first plunger forming a first seal against an inner surface of the syringe body and defining a fluid delivery volume between the first plunger and the distal end of the syringe body; a second plunger disposed within the vacuum chamber, the second plunger forming a second seal against an inner surface of the vacuum chamber and defining a proximal volume compartment and a distal volume compartment within the vacuum chamber; a vent within the distal volume compartment of the vacuum chamber, wherein the vent is configured to allow communication of air between an area outside the syringe system and the distal volume compartment; and a piston affixed to the second plunger and extending proximally out of the vacuum chamber, the piston configured to move the second plunger within the vacuum chamber, thereby altering a volume of the proximal volume compartment and a volume of the distal volume compartment.