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Implantable infusion device

  • US 5,180,365 A
  • Filed: 02/15/1991
  • Issued: 01/19/1993
  • Est. Priority Date: 03/01/1990
  • Status: Expired due to Fees
First Claim
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1. An implantable infusion port for allowing the introduction of a flexible filament such as a catheter wire or optical fiber into a patient and being accessed using a needle which penetrates the patient'"'"'s skin with said filament being introduced into the port by said needle, comprising:

  • housing means defining an enlarged generally funnel shaped entrance orifice, with the surface of said entrance orifice formed of a hard material to guide said needle contacting said orifice to a focus area,mounting means for fastening said port subcutaneously, an entrance passageway formed by said housing means extending from said focus area to a valve chamber and to an exit passageway communicating with a site within the patient,valve means within said valve chamber for permitting said filament to pass through said valve means while restricting the flow of fluids across said valve means when said filament is removed, andstop means within said entrance passageway between said focus area and said valve chamber for restricting the passage of said needle while permitting said flexible filament to pass through said entrance passageway and engage said valve means.

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