Bard Groshong PICC, Инструкция по эксплуатации, Страница: 3 / 20

Product Description
A family of single and dual-lumen peripherally placed
and central catheters made from specially formulated and processed
medical grade materials, in a tray with accessories for reliable long
(greater than 30 days) or short term (less than 30 days) vascular
access.
Groshong* Valve Function
The Groshong* catheter incorporates the patented, 3-position, pres-
sure-sensitive Groshong* valve. The valve is located near the round-
ed, closed, radiopaque catheter tip and allows fluid infusion and blood
aspiration. When not in use, the valve restricts blood backflow and air
embolism by remaining closed.
The Groshong* valve is designed to remain closed between -7 and 80
mm Hg. Since the normal central venous pressure range in the superi-
or vena cava is 0 to 5 mm Hg, the valve remains closed at normal cen-
tral venous pressure. Pressure in the superior vena cava must exceed
80 mm Hg to open the valve inward. Also, negative pressure (vacuum)
will cause the valve to open inward, allowing blood aspiration.
Positive pressure into the catheter (gravity, pump, syringe) will open
the valve outward, allowing fluid infusion. The need for the anticoagu-
lant effect of heparin is eliminated because the closed valve prevents
blood from entering the catheter and clotting. If the catheter is aspirat-
ed, pulling the valve inward, it must be flushed with normal saline to
clear blood from the lumen and allow the valve to return to its normal
closed position.
Product Description
1
CLOSED
Neutral Pressure
ASPIRATION
Negative Pressure
INFUSION
Positive Pressure