System for preventing needle displacement in subcutaneous venous

Details System for preventing needle displacement in subcutaneous venous System for preventing needle displacement in subcutaneous venous

1995-09-14

1997-06-10

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604175, A61M 1100

Patent

active

056370881

ABSTRACT:
A threaded, dual needle system is securely attached to a modified subcutaneous venous access port having an internal reservoir, used for intravenous drug therapy particularly in human cancer treatment. A hollow outer needle is paired with a removable, male-threaded solid inner point and inserted through the patient's tissue and through the port's protective, self-sealing silicon septum, and the solid inner needle is then removed, while the outer needle is left in place. Next, a hollow inner needle is threaded through the outer needle to a depth sufficient to interlock with a female-threaded port receptacle at the base of the port's fluid reservoir and rotated to install. Optional additional threading can permit securing the outer needle to the two inner needles. A breakaway system prevents displacement from unintended pulling of the flow-line. The system thus provides additional protection against needle displacement from venous access ports, the resulting leakage, and the problems caused thereby.

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patent: 5487739 (1996-01-01), Aebischer et al.
patent: 5527307 (1996-06-01), Srisathapat et al.

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