Fixation mesh for implantable medical device

A fixation device comprising:

• an elongated body extending distally from a distal end of an implantable medical device, the elongated body comprising:
• a proximal end located at the distal end of the implantable medical device, and
• a helix extending distally from the proximal end and defining one or more coils, wherein a distal end of the helix is configured to penetrate into tissue of a patient;
• and
• a mesh disposed over at least a portion of a distal portion of the implantable medical device, wherein the distal portion of the implantable medical device defines the distal end of the implantable medical device, wherein the mesh comprises a plurality of filaments, and wherein the mesh is configured to facilitate growth of the tissue around one or more filaments of the plurality of filaments.

A device comprising:

• an elongated housing extending from a proximal end to a distal end, the elongated housing being configured to be implanted wholly within a chamber of a heart;
• a fixation helix extending distally from the distal end of the elongated housing;
• an electrode disposed at the distal end of the elongated housing, wherein the second electrode is configured to be placed in contact with wall tissue of the chamber without penetrating the wall tissue;
• and
• a mesh disposed over at least a portion of a distal portion of the elongated housing, wherein the distal portion of the elongated housing defines the distal end of the housing, wherein the mesh comprises a plurality of filaments, and wherein the mesh is configured to facilitate growth of the wall tissue around one or more filaments of the plurality of filaments.