Interventional medical devices, device systems, and fixation components thereof

A tissue penetrating fixation component for an implantable medical device (IMD), the component comprising:

• a base defining a longitudinal axis of the component and being configured to be fixedly attached to the IMD so that a perimeter of the component extends around an electrode of the IMD, and so that the longitudinal axis of the component is generally aligned along a longitudinal axis of the IMD;
• and
• a plurality of tines extending from the base and being spaced apart from one another around a perimeter thereof, and each tine of the plurality of tines comprising:
• a proximal portion being fixedly attached to the base, wherein the proximal portion extends from the base in a first direction, and wherein the proximal portion comprises a first pre-formed curvature;
• and
• a distal portion comprising:
• a proximal section extending from the first pre-formed curvature of the proximal portion in a second direction along a relatively straight line;
• a hook section comprising a second pre-formed curvature extending from the proximal section;
• and
• tip section extending from hook section toward the longitudinal axis to a free distal end.