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Body cavity access device containing a hormone source

  • US 4,402,694 A
  • Filed: 07/16/1981
  • Issued: 09/06/1983
  • Est. Priority Date: 07/16/1981
  • Status: Expired due to Term
First Claim
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1. An implantable device for providing safe access to a patient'"'"'s body cavity comprising:

  • (a) a housing constituted by a sack and a hollow stem;

    the sack having at least one access opening and being constructed of a semipermeable membrane compatible with body tissue and permeable to peritoneal fluid but substantially impermeable to bacteria;

    the hollow stem having a distal end defining an extracorporeal segment and a proximal end defining a subcutaneous segment, the stem being compatible with body tissue and impermeable to body fluids;

    the sack access opening being sealingly coupled with the proximal end of the stem and together with the stem defining an access passageway to the sack, the housing being adapted to be implanted in the patient with the extracorporeal segment extending outside the body of the patient;

    (b) a plug to seal the distal end of the stem; and

    (c) a sensor to measure properties of body fluid located within the sack, the sensor having a transmission line extending outside the housing, and including a cannula extending into the housing to deliver medication into the sack.

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