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Injection port

  • US 5,137,529 A
  • Filed: 04/02/1991
  • Issued: 08/11/1992
  • Est. Priority Date: 02/20/1990
  • Status: Expired due to Term
First Claim
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1. An injection port, comprising:

  • an elastomeric outer housing including an integral elastomeric septum;

    a first base member situated within the outer housing and contiguously engaging a peripheral flange of the septum;

    a second base member situated within the first base member and the outer housing, the second base member contiguously engaging the peripheral flange of the septum opposite the first base member such that the septum is compressed between the first and second base members, wherein the second base member and the septum define an internal chamber;

    a filter barrier supported by the second base member, the filter barrier separating the internal chamber into an upper portion adjacent to the septum and a lower portion;

    an outlet extending from the lower portion of the internal chamber exteriorly through the outer housing; and

    means for sealing an outer peripheral flange of the filter barrier adjacent to the second base member, to require any fluid injected into the upper portion of the internal chamber to pass through the filter barrier before passing through the outlet to exit the injection port, wherein the sealing means includes a needle guard for preventing contact between a needle inserted through the septum into the internal chamber, and the filter barrier.

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