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 Thereafter, when a catheter is inserted, therapeutic agents infused within the patient, or body fluids can be withdrawn.

Abstract: In infusion port for implantation within a patient for providing repeated access to specific tissue within a patient and communicating with the tissue by an internal implanted catheter. The infusion port in accordance with this invention includes a housing having a funnel shaped inlet orifice which terminates in a reduced diameter guide passageway. Installed within the housing is an articulating catheter valve such as a leaflet valve assembly. The housing communicates with an exit passageway which is attached to an internal outflow catheter coupling the infusion port to a specific tissue within the patient. In use, a needle is used to penetrate the patient's skin and contacts the entrance orifice of the infusion port. The entrance orifice guides the needle point into alignment with and into the guide passageway. The guide passageway targets a small portion of the articulating catheter valve which can be in the form of a leaflet valve assembly.