Apparatus and methods for inflating and deflating balloon catheters

摘要

An inflation/deflation syringe (100) that enables one-handed operation to inflate a medical device to a given pressure or volume and one-handed operation to deflate said medical device is disclosed. The syringe has a syringe barrel comprising multiple chambers of multiple diameters (101) and a syringe plunger (102) comprising multiple diameters sized to fit within the syringe barrel. The syringe plunger has segments and the segment with the largest diameter is hollow and in fluid communication with the largest diameter segment of the syringe barrel (101’). A piston and/or seal is disposed and hermetically sealed within the inner chamber of the syringe plunger segment of largest diameter. The syringe barrel chamber of largest volume provides vacuum and/or a reservoir for inflation media.