A Pressure Infuser Bag with a Stopcock Valve and Piston Gauge is a medical device used to administer fluids or blood products quickly and efficiently into a patient's bloodstream. Here's how it is used:

1. Rapid Infusion: It helps deliver fluids at a higher pressure than gravity drip, speeding up the infusion process, which is crucial in emergency situations where quick fluid resuscitation is needed, such as in cases of severe dehydration, trauma, or during surgery.

2. Controlled Pressure: The piston gauge allows for the monitoring and regulation of the pressure inside the bag, ensuring that the fluid is delivered at the desired rate without exceeding safe limits.

3. Stopcock Valve: This component enables the healthcare provider to control the flow of fluids, easily starting or stopping the infusion without disconnecting the setup.

Overall, a pressure infuser bag is a vital tool in emergency medicine and surgery for rapidly and safely infusing large volumes of fluids.

Details and Benefits:

• Pressure relief valve prevents over inflation (330 mmHg pressure relief)
  
• Large, oval shaped bulb allows for quick and easy inflation of bladder
  
• Single-handed inflation and deflation design makes it easy to use and requires minimal training.
  
• Suitable for use with external inflation sources
  
• Color-coded gauge makes for accurate pressure monitoring (0-300 mmHg)
  
• Three-way stopcock ensures precise control of pressure
  
• Incredibly reliable - 100% tested
  
• Loads quickly and easily
  
• Comes with hook