Patent ID: 8021340

Claim:
A medical device assembly including: an elongate tubular sleeve adapted for percutaneous implantation having axially spaced distal and proximal ends, said sleeve including a forward portion located proximate to said distal end, a rearward portion located proximate to said proximal end, and a laterally oriented shoulder surface therebetween; said forward portion having a smooth outer surface increasing from a minimum lateral dimension of D 1 near said distal end to a maximum lateral dimension of D 2 near said shoulder surface for insertion through a patient's skin incision; said rearward portion including a section adjacent to said shoulder surface having a porous surface of maximum lateral dimension D 4 , where D 4 is equal to or less than D 2 , for subcutaneous placement in contact with a patient's dermis for promoting soft tissue ingrowth; said tubular sleeve further having an axially extending inner surface surrounding an interior axial passageway; an elongate conduit comprising a peripheral wall having an axially extending outer surface; said conduit extending through said sleeve passageway for axial slidable movement with respect thereto; and a sealing device in said passageway peripherally contacting said conduit outer surface for preventing migration of deleterious material between said sleeve inner surface and said conduit outer surface.