| CPC A61M 25/104 (2013.01) [A61M 25/1018 (2013.01); A61M 25/1027 (2013.01); A61M 25/10185 (2013.11); A61M 25/1025 (2013.01)] | 20 Claims |

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1. A balloon angioplasty inflation device, comprising:
a barrel-shaped syringe body including an open first end, a closed second end, the open first end opposite the closed second end, an exterior surface, an interior surface, and an inner fluid chamber extending between the open first end and the closed second end, the closed second end including a first port in fluid communication with the fluid chamber, a second port in fluid communication with the fluid chamber, and a port controller coupled to the first port and the second port selectively enabling fluids to flow from the fluid chamber to the first port, the second port, or both the first port and the second port, the first port connectable to a first balloon catheter, the second port connectable to a second balloon catheter to be inflated simultaneously using a single inflation device;
a plunger slidably disposed within the fluid chamber of the syringe body, the plunger including a distal end, a proximal end, the distal end opposite the proximal end, a plunger shaft extending between the proximal end and the distal end, a plunger bore extending longitudinally through the plunger shaft from the proximal end to the distal end, a plurality of plunger threads disposed on the plunger shaft, and a plunger valve positioned within the plunger bore and extending from the proximal end to the distal end, the proximal end including a handle for drawing and depressing the plunger with respect to the fluid chamber, the distal end including an annular seal, the seal including a pressure valve selectively allowing air through the seal, the plunger valve in fluid communication with the fluid chamber and rotatable between an open position and a closed position to selectively fluidly communicate with the seal to allow air from the fluid chamber through the plunger valve to the seal, where in the open position the plunger valve is in fluid communication with the seal and in the closed position the fluid communication with the seal is broken; and
a coupling member disposed on the open first end, the coupling member including coupling threads threadably engaged to the plunger threads to couple the plunger to the syringe body, the plunger translatable longitudinally with respect to the syringe body by rotating the plunger with respect to the coupling member.
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