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US 2013/0296808 A1Published application
Safety Needle with Positive Flush
AssigneeC. R. Bard, Inc.
InventorsDaniel J. Triplett, Kevin W. Sheetz, Eddie K. Burnside
Life of this patent
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Abstract
A needle assembly including a positive flush mechanism for use with a vascular access port. The needle assembly is configured to supply fluid to the port and to provide a positive flush to overcome negative pressures in the port that can potentially occur during withdrawal of the needle from the port.
Claims1
A method for preventing negative pressure in a vascular access port upon removal of a needle therefrom, comprising:
- providing a needle device including an positive flushing mechanism that automatically activates upon translation of the needle device from an insertion position to a protection position;
- and
- translating the needle device from the insertion position to the protection position to activate the positive flushing mechanism, a volume of fluid released from the needle device into a reservoir of the vascular access port as the needle tip is withdrawn therefrom, the volume of fluid replacing the volume of the needle in the vascular access port reservoir.
Dependencies are inferred from the claim text.