Biostimulator delivery system having tether cable

A biostimulator delivery system, comprising:

• a handle;
• an elongated catheter extending from the handle;
• a docking cap rotationally coupled to the elongated catheter, wherein the docking cap includes a docking cavity to receive an attachment feature of a biostimulator;
• and
• a tether assembly extending from the handle through the elongated catheter, wherein the tether assembly includes
• a first connector mounted on a first tether cable, and a second connector mounted on a second tether cable, wherein the first tether cable extends longitudinally through a central hole in the first connector to a distal cable end, and wherein the distal cable end is exposed through the central hole of the first connector, the first connector fixedly mounted on the first tether cable at the distal cable end such that the first connector is immovable relative to the first tether cable, wherein the first tether cable includes a core strand, a first plurality of strands extending about the core strand in a first helical direction between a proximal cable end and the distal cable end, and a second plurality of strands extending about the core strand in a second helical direction opposite the first helical direction and radially between the core strand and the first plurality of strands, wherein opposite helical directions comprise clockwise and counterclockwise, based on right-hand rule.

A biostimulator delivery system, comprising:

• a handle;
• an elongated catheter extending from the handle;
• a docking cap rotationally coupled to the elongated catheter, wherein the docking cap includes a docking cavity to receive an attachment feature of a biostimulator;
• and
• a tether assembly extending from the handle through the elongated catheter, wherein the tether assembly includes a threaded connector fixedly mounted on a distal cable end of a tether cable, and wherein the tether cable extends longitudinally through a central hole in the threaded connector, wherein the tether cable includes a core strand, a first plurality of strands extending about the core strand in a first helical direction between a proximal cable end and the distal cable end, and a second plurality of strands extending about the core strand in a second helical direction opposite the first helical direction and radially between the core strand and the first plurality of strands, wherein opposite helical directions comprise clockwise and counterclockwise, based on right-hand rule.