Venous-arterial detector and pressure indicator

Details Venous-arterial detector and pressure indicator Venous-arterial detector and pressure indicator

2007-05-08

2009-11-17

Mallari, Patricia C (Department: 3735)

Surgery

Diagnostic testing

Bleeding detection

C600S487000, C604S168010, C604S900000

Reexamination Certificate

active

07618370

ABSTRACT:
A venous-arterial detector is disclosed. The detector includes a first chamber in fluid communication with a needle, and an indicator chamber in selective fluid communication with the first chamber through a valve. The indicator chamber is pre-pressurized to a defined pressure that preferably exceeds typical venous pressure, and the valve retains that pressure within the indicator chamber. When the needle is inserted into a vessel, if the pressure in the vessel is greater than the defined pressure in the indicator chamber, blood will flow into the indicator chamber, indicating that the vessel is most likely to be an artery.

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