Keep vein open method and injector with keep vein open function

Details Keep vein open method and injector with keep vein open function Keep vein open method and injector with keep vein open function

2004-02-13

2009-02-17

Desanto, Matthew F (Department: 3763)

Surgery

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

Treating material introduced into or removed from body...

C604S235000, C604S006110

Reexamination Certificate

active

07491191

ABSTRACT:
The present invention embodies a method and an injector adapted to incorporate this method, for keeping a patient's vein open during an intravenous contrast injector procedure without injecting a saline solution from a separate syringe. The injector includes a controller having a programable software module to allow an operator to configure the injector to push some contrast media fluid through an injection site and then retract a plunger drive ram. A syringe is adapted to allow a patient's blood pressure to move the syringe plunger back towards its starting position, thus enabling a patient's blood to pass through the injection site. Alternatively, the syringe is adapted with an elastic plunger which as it enlarges and contracts facilitates fluid communication through the injection site. Additionally, the plunger drive ram can be adapted to gradually pull as well as push the plunger, thereby causing fluid to flow across the injection site.

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Mallinckrodt,Optistar LE Power Injector, Mallinckrodt Imaging—Product Detail—Optistar LE Power Injector.
PCT/US2005/004348 International Search Report.

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