Leadless biostimulator and electrical feedthrough assembly for leadless biostimulator

A leadless biostimulator, comprising:

• a housing having a longitudinal axis and containing an electronics compartment;
• an electronics assembly mounted in the electronics compartment, wherein the electronics assembly includes an electrical connector;
• and
• an electrical feedthrough assembly mounted on the housing, the electrical feedthrough assembly including
• an electrode body including an electrically conductive cup having an electrode wall extending distally from an electrode base around an electrode cavity;
• an electrode tip mounted on a distal end of the electrode body wherein the electrode tip is electrically conductive and configured to be placed in contact with target tissue to which a pacing impulse is to be transmitted by the leadless biostimulator;
• a filler in the electrode cavity between the electrode base and the electrode tip, wherein the filler includes a therapeutic agent;
• and
• one or more openings in at least one of the electrode body or the electrode tip, wherein the one or more openings are configured to deliver the therapeutic agent to the target tissue when the therapeutic agent elutes from the filler and passes through the one or more openings.