Common problems of medical three-way valve

 Why are there a lot of bubbles generated?

Answer: If the air in the syringe and the three-way valve is not emptied, a lot of air bubbles will be generated when mixing the medicine, especially for some relatively thick liquids. Push and pull back and forth in the syringe to mix the medicine, a large number of air bubbles will be distributed in the liquid, and it is difficult to dissipate. Maybe your numbness time is almost over, and the air bubbles still exist in the liquid, making it impossible to operate at all. Therefore, we need to empty the air in the syringe before and after extracting the liquid medicine, and before starting to mix the medicine, we need to empty the air in the three-way, and then perform the three-way medicine mixing operation.

Why do the needles explode during the medicine mixing process?

Answer: This situation mainly occurs on flat-mouth syringes.

①The flat-mouth syringe is not like the screw-mouth syringe. It has no buckle, so the tee cannot be fastened to the syringe.

②The tee end of the flat-mouth syringe is easy to slip after contacting the liquid, and pushing the injection hard during operation will increase the occurrence of needle explosion. Therefore, Zemei recommends that ladies and sisters can choose a spiral syringe for drug mixing.

1. Draw medicine from the sealed bottle:

Remove the central part of the aluminum cap, and after routine disinfection, insert the needle into the bottle stopper, inject the required amount of air into the bottle to increase the pressure inside the bottle and avoid negative pressure, and then extract the liquid.

2. Draw medicine from the ampoule:

Put the beveled side of the needle down below the liquid level of the ampoule and draw out the liquid medicine. Do not hold the piston shaft with your hands when pumping medicine, only the piston handle.

1. Draw medicine from the sealed bottle:

Remove the central part of the aluminum cap, and after routine disinfection, insert the needle into the bottle stopper, inject the required amount of air into the bottle to increase the pressure inside the bottle and avoid negative pressure, and then extract the liquid.

2. Draw medicine from the ampoule:

Put the beveled side of the needle down below the liquid level of the ampoule and draw out the liquid medicine. Do not hold the piston shaft with your hands when pumping medicine, only the piston handle.