Importance

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Abstract

An access port for implantation within the body of a patient for providing repeated access to a specific site within the patient via communicating through an implanted internal catheter. An access port in accordance with this invention includes a composite construction where at least a portion of the housing is formed of a first material while an entrance orifice leading to a reduced diameter passageway is defined by a second material. The second material forms a hard surface which will not be gouged or penetrated by the point of a sharp accessing instrument such as a needle or a trocar. An external filament such as a guide wire, optical fiber or external catheter can be introduced into the access device by feeding it through the accessing instrument. This system allows the introduction of therapeutic agents, the removal of fluids from the body, or the introduction of sensing or articulating devices to the specific site within the patient.

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First Claim