Phone us Mon-Fri 8:30am to 4:30pm on 07877501999

Open Mobile Menu

Positive pressure concept and how to create it

Upon disconnection of the syringe, extension or similar, the valve can produce a backflow (negative pressure) of blood towards the catheter. This could eventually obdurate the catheter as a result of blood coagulation.

Thanks to the design of the valves "EZ-IV NFree", the possible backflow risk is minimal (only 0,02ml). Much less than other valves with more complicated activation systems.

Either of the two following techniques are effective in preventing and reducing any backflow:risk

Technique 1 : Close the clamp before disconnection

 

  1. Before disconnection of the syringe or extension, CLOSE THE CLAMP to interrupt the flow between the valve and the catheter. Closing the clamp, will automatically produce a positive pressure towards the catheter.
  2. After disconnection, open the clamp.
  3. With this method any flow of the blood towards the catheter will be avoided, ensuring catheter patency at all times.

Technique 2: Keep the plunger of the syringe pressed during disconnection

  1. Before disconnecting, reserve approximate 1 ml. of the injecting solution in the syringe.
  2. During disconnection, press the plunger lightly and inject the reserved solution through the valve, whilst disconnecting simultaneously.


With this method any flow of the blood towards the catheter will be avoided, ensuring catheter patency at all times.

  • Contacting Us

    Phone us:

    07877501999

    Get in touch

    Email Us

    Opening hours

    Mon-Fri, 8:30am to 4:30pm