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Lead retention and seal for implantable medical device

  • US 5,413,595 A
  • Filed: 10/15/1993
  • Issued: 05/09/1995
  • Est. Priority Date: 10/15/1993
  • Status: Expired due to Fees
First Claim
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1. An implantable medical device for delivering an electrical stimulus to tissue via an attached lead having a connector at a proximal end, the medical device comprising:

  • pulse generating means for generating the electrical stimulus;

    a housing containing said pulse generating means, said housing including a header portion having at least one orifice for receiving the connector of the lead;

    sphincter seal means, disposed in said at least one orifice of said header portion of said housing, for sealing against intrusion of bodily fluids and locking in place the connector of the lead upon actuation into a closed position, and defeasibly unlocking the connector in said at least one orifice when said sphincter seal means is in an open position;

    a slot formed in said header portion of said housing, said slot intersecting said at least one orifice in an area proximate said sphincter seal means disposed in said at least one orifice; and

    means for actuating said sphincter seal means between said open position and said closed position, said sphincter seal means being radially retracted about the connector when in said open position and radially expanded about the connector when in said closed position, said means for actuating being movable within said slot.

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