| CPC A61B 17/3468 (2013.01) [A61B 17/32053 (2013.01); A61M 25/0136 (2013.01); A61M 25/0147 (2013.01); A61N 1/37512 (2017.08); A61N 1/3756 (2013.01); A61B 2017/00358 (2013.01); A61B 2017/00407 (2013.01); A61M 25/0009 (2013.01); A61M 2025/0024 (2013.01); A61M 25/0082 (2013.01); A61M 25/0097 (2013.01); A61M 25/0108 (2013.01); A61M 25/0662 (2013.01); A61M 2025/0681 (2013.01); A61N 1/362 (2013.01); A61N 1/37518 (2017.08)] | 16 Claims |

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10. A leadless pacemaker system, comprising:
a leadless pacemaker having a coupling feature; and
a catheter-based system including
a handle including a housing having a longitudinal axis,
a first gear rotationally supported within and axially immovable relative to the housing, and
a second gear rotationally fixed relative to the housing, wherein the second gear is translatable along the housing between a first shuttle position and a second shuttle position, wherein the first gear and the second gear are engaged in the first shuttle position, and wherein the first gear and the second gear are disengaged in the second shuttle position.
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