Patent ID: 7195610
Filing Date: 2007-03-27
Classification: A61M

Abstract:
1. A pneumatic syringe driver comprising: an internal power source; a control module in communication with the power source; a three-way valve in communication with and operative under the control of the control module, the valve having a first port in fluid communication with a first fluid conduit, a second port in fluid communication with a second fluid conduit, and a third port in fluid communication with a third fluid conduit, the first port of the three-way valve being in communication with the atmosphere through the first fluid conduit, wherein the three-way valve is an electronic valve and operates under the control of the control module; a compressed gas canister in fluid communication through the second fluid conduit with the second port of the three-way valve; a syringe having a balloon interface for mechanically communicating with a balloon disposed thereon; a piston disposed for axial movement along the length or the syringe and dividing the syringe into a piston chamber and a syringe chamber, wherein the piston chamber is in fluid communication with the third port of the three-way valve through the third fluid conduit; and wherein the three-way valve may be controlled by the control module to have a first actuation state and a second actuation state, the first actuation state allowing gas to flow from the compressed gas canister through the second fluid conduit into the second port of the three-way valve and through the third port of the three-way valve into the third fluid conduit and into the piston chamber, and the second actuation state allowing gas to flow from the piston chamber through the third fluid conduit and third port of the three-way valve into the three-way valve and then through the first port of the three-way valve and first fluid conduit to the atmosphere.