Pneumatic controlled infusion device

Details Pneumatic controlled infusion device Pneumatic controlled infusion device

1996-06-11

1998-05-12

Rimell, Sam

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604118, 604140, 604141, 604247, A61M 3700

Patent

active

057498547

ABSTRACT:
A pneumatic controlled infusion bag comprises a double-layer infusion bag, a space defined between the layers for receiving pneumatic pressure therein to gradually squeeze the medicament inside the bag delivering into the vessel of a patient. A pneumatic fluid control assembly controllably supplies the pneumatic pressure into the infusion bag. The assembly comprises an air inlet connected to a pneumatic source, an outlet connected to the bag via a hose, a first and a second piston disposed inside the assembly for respectively controlling the open/close and the proper amount of the pneumatic pressure. A pressure release valve inside the infusion bag can automatically release the excessive pneumatic pressure out of the bag. This disclosure overcomes the resistance of the blood pressure and needs no longer to form a potential difference between the infusion bag and the human body.

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