Biostimulator retrieval system having cincher tube

A biostimulator retrieval system, comprising:

• a docking cap having a docking cavity to receive an attachment feature of a biostimulator;
• a torque shaft fixed to the docking cap, wherein the torque shaft has a shaft lumen in communication with the docking cavity;
• a snare including one or more snare loops, wherein the snare extends through the shaft lumen and the docking cavity;
• and
• a cincher tube surrounding the snare within the shaft lumen, wherein the cincher tube is independent from and longitudinally movable relative to the torque shaft.

A method, comprising:

• placing one or more snare loops of a snare over an attachment feature of a biostimulator;
• advancing a cincher tube over the snare to cause the snare to grasp the attachment feature, wherein the snare is separated from a torque shaft by the cincher tube, and wherein the torque shaft is attached to a docking cap;
• retracting the attachment feature into a docking cavity of the docking cap, wherein retracting the attachment feature includes moving the cincher tube independently from and longitudinally relative to the torque shaft;
• and
• applying rotational torque from the torque shaft to the attachment feature through the docking cap to unscrew the biostimulator from tissue of a patient.