Implantable infusion device

Details Implantable infusion device Implantable infusion device

1990-03-01

1991-10-15

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604175, 604256, A61M 5178

Patent

active

050570846

ABSTRACT:
An infusion part for implantation adapted for providing repeated access to specific tissue within a patient and communicating with the tissue by an internal implanted catheter. The infusion ports according to this invention incorporate an enlarged entrance orifice with a funnel shaped internal cavity which narrows down to a reduced diameter passageway. An articulating catheter valve is provided within the passageway which normally prevents the flow of fluids through the valve but can be penetrated by an external introduced filament such as a catheter. After implantation, an external filament which is fed through an incision in the patient as is guided by the port internal cavity into registry with the catheter valve. Continued feeding of the filament causes the catheter to pass through the valves. Thereafter, when a catheter is inserted, therapeutic agents infused within the patient, or body fluids can be withdrawn. Alternate embodiments disclose means for providing a change in direction of the an introduced filament inserted through the infusion device. Additional embodiments disclose the concepts of providing a antimicrobial fluid bath within the device for prevention of infection and various approaches for securely connecting an internal catheter to an infusion port.

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