Implantable drug delivery port

An implantable drug delivery device, comprising:

• a port housing, comprising:
• a fill port cavity configured to receive an injectable fluid, the fill port cavity being aligned along a central axis and defined by an inner side wall and a needle stop, the needle stop forming a base opposite an opening of the fill port cavity;
• a perimeter edge extending from the inner side wall circumferentially around the opening of the fill port cavity, the perimeter edge defined by a planar surface orthogonal to the central axis of the fill port cavity;
• a collection channel formed in the port housing circumferentially around the perimeter edge;
• a plurality of filter channels formed in the planar surface of the perimeter edge, each filter channel of the plurality of filter channels extending radially outward from the inner side wall to the collection channel;
• and
• a catheter fitting in fluid communication with the collection channel, the catheter fitting being configured to couple to a catheter;
• a fill port washer having a first side opposite a second side, the first side of the fill port washer being configured to be seated against the planar surface of the perimeter edge to form a fluid pathway in each of the plurality of filter channels, each fluid pathway fluidly coupling the fill port cavity to the collection channel;
• a pierceable septum seated against the second side of the fill port washer;
• and
• a port cover configured to couple to the port housing and compress the pierceable septum against the second side of the fill port washer, the port cover defining an aperture positioned over the pierceable septum and the opening of the cylindrical port cavity to enable the injectable fluid to be delivered into the fill port cavity.

An implantable drug delivery device, comprising:

• a port housing, comprising:
• a fill port cavity configured to receive an injectable fluid, the fill port cavity being aligned along a central axis and defined by an inner side wall and a needle stop, the needle stop forming a base opposite an opening of the fill port cavity;
• a perimeter edge extending from the inner side wall circumferentially around the opening of the fill port cavity, the perimeter edge defined by a planar surface orthogonal to the central axis of the fill port cavity;
• a plurality of filter channels formed in the planar surface of the perimeter edge, each filter channel of the plurality of filter channels extending radially outward from the inner side wall in the planar surface;
• and
• a catheter fitting configured to couple to a catheter;
• a fill port washer having a first side opposite a second side, the first side of the fill port washer being configured to be seated against the planar surface of the perimeter edge to form a fluid pathway in each of the plurality of filter channels, each fluid pathway of each filter channel being in fluid communication with the fill port cavity and the catheter fitting;
• a pierceable septum seated against the second side of the fill port washer;
• and
• a port cover configured to couple to the port housing and compress the pierceable septum against the second side of the fill port washer, the port cover defining an aperture aligned with the pierceable septum and the opening of the fill port cavity to enable the injectable fluid to be delivered into the fill port cavity.