Sensor over-mold shape

An implantable medical device lead, comprising:

• an elongated lead body;
• a housing having an outer wall and comprising an inner shell and an outer layer formed to extend over and enclose the inner shell to form the outer wall, the inner shell having a thickness extending between an inner wall of the inner shell and an outer wall of the inner shell, the outer layer having an inner side engaged against the outer wall of the inner shell and having a thickness extending between the inner side and the outer wall of the housing, wherein the inner shell and the outer layer form a flat portion;
• a flexible diaphragm formed within the inner shell along the flat portion and extending between a first edge and a second edge;
• a shoulder extending adjacent to the first edge that extends the outer layer laterally away from a central medial line extending between the first and second edges of the diaphragm;
• a recess portion formed between the diaphragm and the inner side of the outer layer;
• and
• an over-fill channel formed by the outer layer and extending through the outer layer from an opening formed at the outer wall to an opening formed along the inner side of the outer layer extending along the flat portion.